fix(shell): repair Windows input cancellation and CI

feat(client): add OPFOR CNA BOF scripting

.gitattributes

@@ -0,0 +1,3 @@
+# Preserve pinned upstream source and attribution files byte-for-byte.
+client/command/opfor/testdata/corpus/operatorskit/*.cna whitespace=-trailing-space,-blank-at-eof
+vendor/github.com/sliverarmory/opfor/internal/regexp2/ATTRIB whitespace=-trailing-space

.github/workflows/autorelease.yml

@@ -39,10 +39,18 @@ jobs:
 
           echo "tag=$tag" >> "$GITHUB_OUTPUT"
 
-  release:
-    name: Release
+  e2e:
+    name: End-to-end test suites
     needs: tag-check
     if: needs.tag-check.outputs.tag != ''
+    uses: ./.github/workflows/comprehensive-e2e.yml
+
+  release:
+    name: Release
+    needs:
+      - tag-check
+      - e2e
+    if: needs.tag-check.outputs.tag != '' && needs.e2e.result == 'success'
     runs-on: ubuntu-latest
     environment: release
     timeout-minutes: 45

.github/workflows/comprehensive-e2e.yml

@@ -0,0 +1,456 @@
+name: Comprehensive e2e Tests
+
+on:
+  workflow_dispatch:
+  workflow_call:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: comprehensive-e2e-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  authorize:
+    name: Authorize invocation
+    runs-on: ubuntu-24.04
+    timeout-minutes: 5
+    steps:
+      - name: Check actor repository permission
+        uses: actions/github-script@v9
+        env:
+          REQUESTING_ACTOR: ${{ github.triggering_actor }}
+        with:
+          script: |
+            const isReleaseTag = context.eventName === "push" && context.ref.startsWith("refs/tags/v");
+            if (isReleaseTag) {
+              core.info(`Authorized release test invocation for ${context.ref}`);
+              return;
+            }
+
+            const actor = process.env.REQUESTING_ACTOR || context.actor;
+            const { data } = await github.rest.repos.getCollaboratorPermissionLevel({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              username: actor,
+            });
+            core.info(`${actor} has repository permission ${data.permission} (${data.role_name})`);
+            if (data.permission !== "admin") {
+              core.setFailed("Comprehensive e2e Tests may only be run by repository administrators");
+            }
+
+  darwin:
+    name: comprehensive-e2e-darwin-${{ matrix.goarch }}
+    needs: authorize
+    runs-on: ${{ matrix.runner }}
+    timeout-minutes: 360
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: macos-15-intel
+            goarch: amd64
+            server_arch: amd64
+          - runner: macos-15
+            goarch: arm64
+            server_arch: arm64
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+
+      - name: Prepare coverage artifact
+        run: |
+          mkdir -p e2e-results
+          printf 'darwin/%s\n' '${{ matrix.goarch }}' > e2e-results/target-darwin-${{ matrix.goarch }}.txt
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Download Sliver build assets
+        run: go run -buildvcs=false -mod=vendor ./util/cmd/assets
+
+      - name: Build unmodified Sliver server
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.server_arch }}
+          GOOS: darwin
+        run: >-
+          go build -buildvcs=false -mod=vendor -trimpath -tags go_sqlite,server
+          -o sliver-server ./server
+
+      - name: Compile comprehensive E2E driver
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.goarch }}
+          GOOS: darwin
+        run: >-
+          go test -c -buildvcs=false -mod=vendor -trimpath -tags client,go_sqlite
+          -o sliver-comprehensive-e2e ./test/e2e
+
+      - name: Run comprehensive E2E suite
+        run: >-
+          ./sliver-comprehensive-e2e
+          -test.v
+          -test.run=^TestComprehensiveE2E$
+          -test.timeout=0
+          -repo .
+          -server ./sliver-server
+          -server-arch ${{ matrix.server_arch }}
+          -target-os darwin
+          -target-arch ${{ matrix.goarch }}
+          -results ./e2e-results
+          -transports mtls,wg,http
+          -implant-modes session,beacon
+          -beacon-interval 10s
+
+      - name: Upload target coverage
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v7
+        with:
+          name: comprehensive-e2e-target-darwin-${{ matrix.goarch }}
+          path: e2e-results
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 14
+
+  linux-native:
+    name: comprehensive-e2e-linux-${{ matrix.goarch }}
+    needs: authorize
+    runs-on: ${{ matrix.runner }}
+    timeout-minutes: 360
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: ubuntu-24.04
+            goarch: amd64
+            server_arch: amd64
+          - runner: ubuntu-24.04-arm
+            goarch: arm64
+            server_arch: arm64
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+
+      - name: Prepare coverage artifact
+        run: |
+          mkdir -p e2e-results
+          printf 'linux/%s\n' '${{ matrix.goarch }}' > e2e-results/target-linux-${{ matrix.goarch }}.txt
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Download Sliver build assets
+        run: go run -buildvcs=false -mod=vendor ./util/cmd/assets
+
+      - name: Build unmodified Sliver server
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.server_arch }}
+          GOOS: linux
+        run: >-
+          go build -buildvcs=false -mod=vendor -trimpath -tags go_sqlite,server
+          -o sliver-server ./server
+
+      - name: Compile comprehensive E2E driver
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.goarch }}
+          GOOS: linux
+        run: >-
+          go test -c -buildvcs=false -mod=vendor -trimpath -tags client,go_sqlite
+          -o sliver-comprehensive-e2e ./test/e2e
+
+      - name: Run comprehensive E2E suite
+        run: >-
+          ./sliver-comprehensive-e2e
+          -test.v
+          -test.run=^TestComprehensiveE2E$
+          -test.timeout=0
+          -repo .
+          -server ./sliver-server
+          -server-arch ${{ matrix.server_arch }}
+          -target-os linux
+          -target-arch ${{ matrix.goarch }}
+          -results ./e2e-results
+          -transports mtls,wg,http
+          -implant-modes session,beacon
+          -beacon-interval 10s
+
+      - name: Upload target coverage
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v7
+        with:
+          name: comprehensive-e2e-target-linux-${{ matrix.goarch }}
+          path: e2e-results
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 14
+
+  linux-386:
+    name: comprehensive-e2e-linux-386
+    needs: authorize
+    runs-on: ubuntu-24.04
+    timeout-minutes: 360
+    env:
+      CONTAINER_NAME: sliver-comprehensive-e2e-linux-386-${{ github.run_id }}-${{ github.run_attempt }}
+      IMAGE_NAME: sliver-comprehensive-e2e-linux-386:${{ github.run_id }}-${{ github.run_attempt }}
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+
+      - name: Prepare coverage artifact
+        run: |
+          mkdir -p e2e-results
+          printf 'linux/386\n' > e2e-results/target-linux-386.txt
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build linux/386 E2E image
+        run: |
+          set -euo pipefail
+          go_version="$(awk '$1 == "go" { print $2; exit }' go.mod)"
+          docker buildx build \
+            --load \
+            --platform linux/386 \
+            --build-arg "GO_VERSION=${go_version}" \
+            --file test/e2e/Dockerfile.linux-386 \
+            --tag "${IMAGE_NAME}" \
+            .
+
+      - name: Run comprehensive E2E suite
+        run: >-
+          docker run
+          --name "${CONTAINER_NAME}"
+          --platform linux/386
+          --volume "${PWD}/e2e-results:/results"
+          "${IMAGE_NAME}"
+
+      - name: Clean up linux/386 Docker resources
+        if: ${{ always() }}
+        run: |
+          docker rm --force "${CONTAINER_NAME}" 2>/dev/null || true
+          docker image rm --force "${IMAGE_NAME}" 2>/dev/null || true
+          docker buildx prune --all --force >/dev/null 2>&1 || true
+
+      - name: Upload target coverage
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v7
+        with:
+          name: comprehensive-e2e-target-linux-386
+          path: e2e-results
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 14
+
+  windows:
+    name: comprehensive-e2e-windows-${{ matrix.goarch }}
+    needs: authorize
+    runs-on: ${{ matrix.runner }}
+    timeout-minutes: 360
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: windows-2022
+            goarch: 386
+            server_arch: amd64
+          - runner: windows-2022
+            goarch: amd64
+            server_arch: amd64
+          - runner: windows-11-arm
+            goarch: arm64
+            server_arch: arm64
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+
+      - name: Prepare coverage artifact
+        run: |
+          mkdir -p e2e-results
+          printf 'windows/%s\n' '${{ matrix.goarch }}' > e2e-results/target-windows-${{ matrix.goarch }}.txt
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Download Sliver build assets
+        run: go run -buildvcs=false -mod=vendor ./util/cmd/assets
+
+      - name: Build unmodified Sliver server
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.server_arch }}
+          GOOS: windows
+        run: >-
+          go build -buildvcs=false -mod=vendor -trimpath -tags go_sqlite,server
+          -o sliver-server.exe ./server
+
+      - name: Compile comprehensive E2E driver
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.goarch }}
+          GOOS: windows
+        run: >-
+          go test -c -buildvcs=false -mod=vendor -trimpath -tags client,go_sqlite
+          -o sliver-comprehensive-e2e.exe ./test/e2e
+
+      - name: Run comprehensive E2E suite
+        run: >-
+          ./sliver-comprehensive-e2e.exe
+          -test.v
+          -test.run=^TestComprehensiveE2E$
+          -test.timeout=0
+          -repo .
+          -server ./sliver-server.exe
+          -server-arch ${{ matrix.server_arch }}
+          -target-os windows
+          -target-arch ${{ matrix.goarch }}
+          -results ./e2e-results
+          -transports mtls,wg,http
+          -implant-modes session,beacon
+          -beacon-interval 10s
+
+      - name: Upload target coverage
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v7
+        with:
+          name: comprehensive-e2e-target-windows-${{ matrix.goarch }}
+          path: e2e-results
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 14
+
+  aggregate-coverage:
+    name: Aggregate comprehensive E2E coverage
+    needs:
+      - authorize
+      - darwin
+      - linux-native
+      - linux-386
+      - windows
+    if: ${{ always() && needs.authorize.result == 'success' }}
+    outputs:
+      command_coverage_markdown: ${{ steps.publish_command_coverage.outputs.command_coverage_markdown }}
+    runs-on: ubuntu-24.04
+    timeout-minutes: 30
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Download target coverage
+        uses: actions/download-artifact@v8
+        with:
+          pattern: comprehensive-e2e-target-*
+          path: coverage-input
+          merge-multiple: true
+
+      - name: Prepare aggregate artifact
+        run: |
+          mkdir -p coverage-input coverage-summary
+          printf 'Comprehensive E2E coverage aggregate\n' > coverage-summary/README.txt
+
+      - name: Aggregate coverage and enforce required cells
+        id: aggregate
+        continue-on-error: true
+        run: >-
+          go run -buildvcs=false -mod=vendor ./test/e2e/report
+          -input coverage-input
+          -output coverage-summary
+
+      - name: Publish command coverage table
+        id: publish_command_coverage
+        if: ${{ always() }}
+        run: |
+          detailed_report="coverage-summary/coverage-summary.md"
+          report="coverage-summary/command-coverage.md"
+          if [[ ! -s "${report}" ]]; then
+            printf 'Command coverage report is missing or empty: %s\n' "${report}" >&2
+            exit 1
+          fi
+
+          delimiter="COMPREHENSIVE_E2E_COMMAND_COVERAGE_EOF"
+          if grep -Fxq "${delimiter}" "${report}"; then
+            printf 'Command coverage report contains the reserved output delimiter: %s\n' "${delimiter}" >&2
+            exit 1
+          fi
+
+          {
+            printf 'command_coverage_markdown<<%s\n' "${delimiter}"
+            cat "${report}"
+            printf '%s\n' "${delimiter}"
+          } >> "${GITHUB_OUTPUT}"
+
+          if [[ -f "${detailed_report}" ]]; then
+            cat "${detailed_report}" >> "${GITHUB_STEP_SUMMARY}"
+          fi
+          printf '\n## Command coverage by OS/architecture/transport\n\n' >> "${GITHUB_STEP_SUMMARY}"
+          cat "${report}" >> "${GITHUB_STEP_SUMMARY}"
+
+      - name: Upload aggregate coverage
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v7
+        with:
+          name: comprehensive-e2e-coverage-summary
+          path: coverage-summary
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 30
+
+      - name: Fail on failed or not-run coverage
+        if: ${{ steps.aggregate.outcome != 'success' }}
+        run: exit 1
+
+  reflektor:
+    name: Existing Reflektor test matrix
+    needs: authorize
+    uses: ./.github/workflows/reflektor-tests.yml
+
+  shellcode:
+    name: Shellcode E2E test matrix
+    needs: authorize
+    uses: ./.github/workflows/shellcode-tests.yml

.github/workflows/golangci-lint.yml

@@ -20,7 +20,6 @@ on:
 
 permissions:
   contents: read
-  pull-requests: read
 
 jobs:
   lint:
@@ -41,6 +40,8 @@ jobs:
     steps:
       - name: Check Out Code
         uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
 
       - name: Go 1.26.6
         uses: actions/setup-go@v6
@@ -51,6 +52,5 @@ jobs:
         uses: golangci/golangci-lint-action@v9
         with:
           version: v2.12.2
-          # Keep legacy findings visible without making them blockers.
-          only-new-issues: true
-          args: ./client/... ./server/... ./util/... ./protobuf/... ./docs ./implant/...
+          # Gate only findings introduced since the event base revision.
+          args: --new-from-rev=${{ github.event.pull_request.base.sha || github.event.before }} ./client/... ./server/... ./util/... ./protobuf/... ./docs ./implant/...

.github/workflows/reflektor-tests.yml

@@ -0,0 +1,214 @@
+name: Reflektor Integration Test Matrix
+
+on:
+  workflow_call:
+
+permissions:
+  contents: read
+
+jobs:
+  darwin:
+    name: reflektor-darwin-${{ matrix.goarch }}
+    runs-on: ${{ matrix.runner }}
+    timeout-minutes: 180
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: macos-15-intel
+            goarch: amd64
+            server_arch: amd64
+          - runner: macos-15
+            goarch: arm64
+            server_arch: arm64
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Download Sliver build assets
+        run: go run -mod=vendor ./util/cmd/assets
+
+      - name: Build Sliver server
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.server_arch }}
+          GOOS: darwin
+        run: go build -mod=vendor -trimpath -tags go_sqlite,server -o sliver-server ./server
+
+      - name: Build Reflektor integration driver
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.goarch }}
+          GOOS: darwin
+        run: go build -mod=vendor -trimpath -tags client,go_sqlite -o sliver-reflektor-e2e ./test/reflektor
+
+      - name: Load Sliver with Reflektor
+        run: >-
+          ./sliver-reflektor-e2e
+          -repo .
+          -server ./sliver-server
+          -target-os darwin
+          -target-arch ${{ matrix.goarch }}
+
+  linux-native:
+    name: reflektor-linux-${{ matrix.goarch }}-native
+    runs-on: ${{ matrix.runner }}
+    timeout-minutes: 180
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: ubuntu-24.04
+            goarch: amd64
+            server_arch: amd64
+          - runner: ubuntu-24.04-arm
+            goarch: arm64
+            server_arch: arm64
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Download Sliver build assets
+        run: go run -mod=vendor ./util/cmd/assets
+
+      - name: Build Sliver server
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.server_arch }}
+          GOOS: linux
+        run: go build -mod=vendor -trimpath -tags go_sqlite,server -o sliver-server ./server
+
+      - name: Build Reflektor integration driver
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.goarch }}
+          GOOS: linux
+        run: go build -mod=vendor -trimpath -tags client,go_sqlite -o sliver-reflektor-e2e ./test/reflektor
+
+      - name: Load Sliver with Reflektor
+        run: >-
+          ./sliver-reflektor-e2e
+          -repo .
+          -server ./sliver-server
+          -target-os linux
+          -target-arch ${{ matrix.goarch }}
+
+  linux-386:
+    name: reflektor-linux-386-docker
+    runs-on: ubuntu-24.04
+    timeout-minutes: 180
+    env:
+      CONTAINER_NAME: sliver-reflektor-linux-386-${{ github.run_id }}-${{ github.run_attempt }}
+      IMAGE_NAME: sliver-reflektor-linux-386:${{ github.run_id }}-${{ github.run_attempt }}
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build linux/386 test image
+        run: |
+          set -euo pipefail
+          go_version="$(awk '$1 == "go" { print $2; exit }' go.mod)"
+          docker buildx build \
+            --load \
+            --platform linux/386 \
+            --build-arg "GO_VERSION=${go_version}" \
+            --file test/reflektor/Dockerfile.linux-386 \
+            --tag "${IMAGE_NAME}" \
+            .
+          docker buildx prune --all --force
+
+      - name: Load Sliver with Reflektor
+        run: >-
+          docker run
+          --name "${CONTAINER_NAME}"
+          --platform linux/386
+          "${IMAGE_NAME}"
+
+      - name: Clean up linux/386 Docker resources
+        if: ${{ always() }}
+        run: |
+          docker rm --force "${CONTAINER_NAME}" 2>/dev/null || true
+          docker image rm --force "${IMAGE_NAME}" 2>/dev/null || true
+          docker buildx prune --all --force >/dev/null 2>&1 || true
+
+  windows:
+    name: reflektor-windows-${{ matrix.goarch }}
+    runs-on: ${{ matrix.runner }}
+    timeout-minutes: 180
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: windows-2022
+            goarch: amd64
+            server_arch: amd64
+          - runner: windows-2022
+            goarch: 386
+            server_arch: amd64
+          - runner: windows-11-arm
+            goarch: arm64
+            server_arch: amd64
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Download Sliver build assets
+        run: go run -mod=vendor ./util/cmd/assets
+
+      - name: Build Sliver server
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.server_arch }}
+          GOOS: windows
+        run: go build -mod=vendor -trimpath -tags go_sqlite,server -o sliver-server.exe ./server
+
+      - name: Build Reflektor integration driver
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.goarch }}
+          GOOS: windows
+        run: go build -mod=vendor -trimpath -tags client,go_sqlite -o sliver-reflektor-e2e.exe ./test/reflektor
+
+      - name: Load Sliver with Reflektor
+        run: >-
+          ./sliver-reflektor-e2e.exe
+          -repo .
+          -server ./sliver-server.exe
+          -target-os windows
+          -target-arch ${{ matrix.goarch }}

.github/workflows/shellcode-tests.yml

@@ -0,0 +1,208 @@
+name: Shellcode E2E Test Matrix
+
+on:
+  workflow_call:
+    outputs:
+      shellcode_coverage_markdown:
+        description: Shellcode E2E coverage table in Markdown
+        value: ${{ jobs.aggregate.outputs.shellcode_coverage_markdown }}
+
+permissions:
+  contents: read
+
+jobs:
+  target:
+    name: shellcode-e2e-${{ matrix.target_os }}-${{ matrix.target_arch }}
+    runs-on: ${{ matrix.runner }}
+    timeout-minutes: 360
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: macos-26
+            target_os: darwin
+            target_arch: arm64
+            server_os: darwin
+            server_arch: arm64
+            server_executable: ./sliver-server
+            test_executable: ./sliver-shellcode-e2e
+          - runner: ubuntu-24.04
+            target_os: linux
+            target_arch: amd64
+            server_os: linux
+            server_arch: amd64
+            server_executable: ./sliver-server
+            test_executable: ./sliver-shellcode-e2e
+          - runner: ubuntu-24.04-arm
+            target_os: linux
+            target_arch: arm64
+            server_os: linux
+            server_arch: arm64
+            server_executable: ./sliver-server
+            test_executable: ./sliver-shellcode-e2e
+          - runner: windows-2022
+            target_os: windows
+            target_arch: "386"
+            server_os: windows
+            server_arch: amd64
+            server_executable: ./sliver-server.exe
+            test_executable: ./sliver-shellcode-e2e.exe
+          - runner: windows-2022
+            target_os: windows
+            target_arch: amd64
+            server_os: windows
+            server_arch: amd64
+            server_executable: ./sliver-server.exe
+            test_executable: ./sliver-shellcode-e2e.exe
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+
+      - name: Prepare target artifact
+        run: |
+          mkdir -p shellcode-results
+          printf '%s/%s\n' \
+            '${{ matrix.target_os }}' \
+            '${{ matrix.target_arch }}' \
+            > 'shellcode-results/target-${{ matrix.target_os }}-${{ matrix.target_arch }}.txt'
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Download Sliver build assets
+        run: go run -buildvcs=false -mod=vendor -trimpath ./util/cmd/assets
+
+      - name: Build unmodified Sliver server
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.server_arch }}
+          GOOS: ${{ matrix.server_os }}
+        run: >-
+          go build -buildvcs=false -mod=vendor -trimpath -tags go_sqlite,server
+          -o ${{ matrix.server_executable }} ./server
+
+      - name: Compile shellcode E2E client
+        env:
+          CGO_ENABLED: "0"
+          GOARCH: ${{ matrix.target_arch }}
+          GOOS: ${{ matrix.target_os }}
+        run: >-
+          go test -c -buildvcs=false -mod=vendor -trimpath -tags client,go_sqlite
+          -o ${{ matrix.test_executable }} ./test/e2e
+
+      - name: Run shellcode generation and execution tests
+        run: >-
+          ${{ matrix.test_executable }}
+          -test.v
+          -test.run=^TestShellcodeE2E$
+          -test.timeout=0
+          -repo .
+          -server ${{ matrix.server_executable }}
+          -server-arch ${{ matrix.server_arch }}
+          -target-os ${{ matrix.target_os }}
+          -target-arch ${{ matrix.target_arch }}
+          -results ./shellcode-results
+          -transports mtls,wg,http
+          -implant-modes session,beacon
+          -beacon-interval 10s
+          -shellcode-sgn-samples 4
+
+      - name: Upload target shellcode results
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v7
+        with:
+          name: shellcode-e2e-target-${{ matrix.target_os }}-${{ matrix.target_arch }}
+          path: shellcode-results
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 14
+
+  aggregate:
+    name: Aggregate shellcode E2E coverage
+    needs: target
+    if: ${{ always() }}
+    outputs:
+      shellcode_coverage_markdown: ${{ steps.publish_shellcode_coverage.outputs.shellcode_coverage_markdown }}
+    runs-on: ubuntu-24.04
+    timeout-minutes: 30
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Prepare aggregate artifact
+        run: |
+          mkdir -p shellcode-input shellcode-summary
+          printf 'Shellcode E2E coverage aggregate\n' > shellcode-summary/README.txt
+
+      - name: Download target shellcode results
+        continue-on-error: true
+        uses: actions/download-artifact@v8
+        with:
+          pattern: shellcode-e2e-target-*
+          path: shellcode-input
+          merge-multiple: true
+
+      - name: Aggregate shellcode coverage
+        id: aggregate
+        continue-on-error: true
+        run: >-
+          go run -buildvcs=false -mod=vendor -trimpath ./test/e2e/shellcode-report
+          -input ./shellcode-input
+          -output ./shellcode-summary
+
+      - name: Publish shellcode coverage table
+        id: publish_shellcode_coverage
+        if: ${{ always() }}
+        run: |
+          report="shellcode-summary/shellcode-coverage.md"
+          if [[ ! -s "${report}" ]]; then
+            printf 'Shellcode coverage report is missing or empty: %s\n' "${report}" >&2
+            exit 1
+          fi
+
+          delimiter="SHELLCODE_E2E_COVERAGE_EOF"
+          if grep -Fxq "${delimiter}" "${report}"; then
+            printf 'Shellcode coverage report contains the reserved output delimiter: %s\n' "${delimiter}" >&2
+            exit 1
+          fi
+
+          {
+            printf 'shellcode_coverage_markdown<<%s\n' "${delimiter}"
+            cat "${report}"
+            printf '%s\n' "${delimiter}"
+          } >> "${GITHUB_OUTPUT}"
+
+          cat "${report}" >> "${GITHUB_STEP_SUMMARY}"
+
+      - name: Upload aggregate shellcode coverage
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v7
+        with:
+          name: shellcode-e2e-coverage-summary
+          path: shellcode-summary
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 30
+
+      - name: Fail on failed or not-run shellcode coverage
+        if: ${{ always() && steps.aggregate.outcome != 'success' }}
+        run: exit 1

client/assets/config.go

@@ -36,6 +36,7 @@ const (
 
 // ClientWGConfig - Optional WireGuard wrapper configuration for multiplayer.
 type ClientWGConfig struct {
+	Enabled          bool   `json:"enabled,omitempty"`
 	ServerPubKey     string `json:"server_pub_key"`
 	ClientPrivateKey string `json:"client_private_key"`
 	ClientPubKey     string `json:"client_pub_key"`

client/assets/config_test.go

@@ -0,0 +1,29 @@
+package assets
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+func TestClientWGConfigEnabledIsPositiveOptIn(t *testing.T) {
+	legacyJSON := []byte(`{"wg":{"server_pub_key":"server-pub","client_private_key":"client-priv","client_ip":"100.64.0.2"}}`)
+	legacy := &ClientConfig{}
+	if err := json.Unmarshal(legacyJSON, legacy); err != nil {
+		t.Fatalf("unmarshal legacy config: %v", err)
+	}
+	if legacy.WG == nil {
+		t.Fatal("expected legacy WireGuard config")
+	}
+	if legacy.WG.Enabled {
+		t.Fatal("expected an absent enabled marker to remain disabled")
+	}
+
+	enabledJSON := []byte(`{"wg":{"enabled":true,"server_pub_key":"server-pub","client_private_key":"client-priv","client_ip":"100.64.0.2"}}`)
+	enabled := &ClientConfig{}
+	if err := json.Unmarshal(enabledJSON, enabled); err != nil {
+		t.Fatalf("unmarshal enabled config: %v", err)
+	}
+	if enabled.WG == nil || !enabled.WG.Enabled {
+		t.Fatal("expected enabled marker to opt in to WireGuard")
+	}
+}

client/cli/cli.go

@@ -52,7 +52,9 @@ func init() {
 
 	rootCmd.TraverseChildren = true
 	rootCmd.Flags().String(RCFlagName, "", "path to rc script file")
-	rootCmd.PersistentFlags().Bool(enableWGFlag, false, "connect to multiplayer through the operator config's WireGuard wrapper")
+	rootCmd.PersistentFlags().Bool(enableWGFlag, false, "force multiplayer connections through the operator config's WireGuard wrapper")
+	rootCmd.PersistentFlags().Bool(disableWGFlag, false, "force multiplayer connections to use direct mTLS")
+	rootCmd.MarkFlagsMutuallyExclusive(enableWGFlag, disableWGFlag)
 
 	// Create the console client, without any RPC or commands bound to it yet.
 	// This created before anything so that multiple commands can make use of

client/cli/transport_mode.go

@@ -1,17 +1,20 @@
 package cli
 
 import (
+	"fmt"
+
 	"github.com/bishopfox/sliver/client/transport"
 	"github.com/spf13/cobra"
 )
 
 const (
-	enableWGFlag = "enable-wg"
+	enableWGFlag  = "enable-wg"
+	disableWGFlag = "disable-wg"
 )
 
 func applyMultiplayerConnectMode(cmd *cobra.Command) error {
 	if cmd == nil {
-		transport.SetMultiplayerConnectMode(transport.MultiplayerConnectDirect)
+		transport.SetMultiplayerConnectMode(transport.MultiplayerConnectAuto)
 		return nil
 	}
 
@@ -19,10 +22,20 @@ func applyMultiplayerConnectMode(cmd *cobra.Command) error {
 	if err != nil {
 		return err
 	}
+	disableWG, err := cmd.Flags().GetBool(disableWGFlag)
+	if err != nil {
+		return err
+	}
+	if cmd.Flags().Changed(enableWGFlag) && cmd.Flags().Changed(disableWGFlag) {
+		return fmt.Errorf("--%s and --%s cannot be used together", enableWGFlag, disableWGFlag)
+	}
 
-	mode := transport.MultiplayerConnectDirect
-	if enableWG {
+	mode := transport.MultiplayerConnectAuto
+	switch {
+	case enableWG:
 		mode = transport.MultiplayerConnectEnableWG
+	case disableWG:
+		mode = transport.MultiplayerConnectDisableWG
 	}
 	transport.SetMultiplayerConnectMode(mode)
 	return nil

client/cli/transport_mode_test.go

@@ -0,0 +1,136 @@
+package cli
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/bishopfox/sliver/client/assets"
+	"github.com/bishopfox/sliver/client/transport"
+	"github.com/spf13/cobra"
+)
+
+func TestWireGuardOverrideFlagsDefaultToFalse(t *testing.T) {
+	for _, name := range []string{enableWGFlag, disableWGFlag} {
+		flag := rootCmd.PersistentFlags().Lookup(name)
+		if flag == nil {
+			t.Fatalf("expected --%s persistent flag", name)
+		}
+		if flag.DefValue != "false" {
+			t.Fatalf("expected --%s to default to false, got %q", name, flag.DefValue)
+		}
+	}
+}
+
+func TestApplyMultiplayerConnectModeDefaultsToAuto(t *testing.T) {
+	resetMultiplayerConnectModeForTest(t)
+	cmd := newTransportModeTestCommand()
+
+	if err := applyMultiplayerConnectMode(cmd); err != nil {
+		t.Fatalf("apply multiplayer mode: %v", err)
+	}
+	if !transport.MultiplayerConnectUsesWireGuard(enabledWGClientConfig()) {
+		t.Fatal("expected automatic mode to honor an explicitly enabled WireGuard config")
+	}
+	if transport.MultiplayerConnectUsesWireGuard(legacyWGClientConfig()) {
+		t.Fatal("expected automatic mode to ignore a legacy WireGuard config without the opt-in marker")
+	}
+}
+
+func TestApplyMultiplayerConnectModeEnableWGForcesLegacyConfig(t *testing.T) {
+	resetMultiplayerConnectModeForTest(t)
+	cmd := newTransportModeTestCommand()
+	if err := cmd.Flags().Set(enableWGFlag, "true"); err != nil {
+		t.Fatalf("set --%s: %v", enableWGFlag, err)
+	}
+
+	if err := applyMultiplayerConnectMode(cmd); err != nil {
+		t.Fatalf("apply multiplayer mode: %v", err)
+	}
+	if !transport.MultiplayerConnectUsesWireGuard(legacyWGClientConfig()) {
+		t.Fatal("expected --enable-wg to force a complete legacy config through WireGuard")
+	}
+}
+
+func TestApplyMultiplayerConnectModeDisableWGOverridesEnabledConfig(t *testing.T) {
+	resetMultiplayerConnectModeForTest(t)
+	cmd := newTransportModeTestCommand()
+	if err := cmd.Flags().Set(disableWGFlag, "true"); err != nil {
+		t.Fatalf("set --%s: %v", disableWGFlag, err)
+	}
+
+	if err := applyMultiplayerConnectMode(cmd); err != nil {
+		t.Fatalf("apply multiplayer mode: %v", err)
+	}
+	if transport.MultiplayerConnectUsesWireGuard(enabledWGClientConfig()) {
+		t.Fatal("expected --disable-wg to force direct mTLS")
+	}
+}
+
+func TestApplyMultiplayerConnectModeRejectsConflictingOverrides(t *testing.T) {
+	resetMultiplayerConnectModeForTest(t)
+	cmd := newTransportModeTestCommand()
+	if err := cmd.Flags().Set(enableWGFlag, "true"); err != nil {
+		t.Fatalf("set --%s: %v", enableWGFlag, err)
+	}
+	if err := cmd.Flags().Set(disableWGFlag, "true"); err != nil {
+		t.Fatalf("set --%s: %v", disableWGFlag, err)
+	}
+
+	err := applyMultiplayerConnectMode(cmd)
+	if err == nil {
+		t.Fatal("expected conflicting WireGuard overrides to fail")
+	}
+	if !strings.Contains(err.Error(), "cannot be used together") {
+		t.Fatalf("unexpected conflict error: %v", err)
+	}
+}
+
+func TestApplyMultiplayerConnectModeRejectsBothOverridesWhenExplicitlyFalse(t *testing.T) {
+	resetMultiplayerConnectModeForTest(t)
+	cmd := newTransportModeTestCommand()
+	if err := cmd.Flags().Set(enableWGFlag, "false"); err != nil {
+		t.Fatalf("set --%s: %v", enableWGFlag, err)
+	}
+	if err := cmd.Flags().Set(disableWGFlag, "false"); err != nil {
+		t.Fatalf("set --%s: %v", disableWGFlag, err)
+	}
+
+	err := applyMultiplayerConnectMode(cmd)
+	if err == nil {
+		t.Fatal("expected explicitly combining both WireGuard override flags to fail")
+	}
+	if !strings.Contains(err.Error(), "cannot be used together") {
+		t.Fatalf("unexpected conflict error: %v", err)
+	}
+}
+
+func newTransportModeTestCommand() *cobra.Command {
+	cmd := &cobra.Command{}
+	cmd.Flags().Bool(enableWGFlag, false, "")
+	cmd.Flags().Bool(disableWGFlag, false, "")
+	return cmd
+}
+
+func resetMultiplayerConnectModeForTest(t *testing.T) {
+	t.Helper()
+	transport.SetMultiplayerConnectMode(transport.MultiplayerConnectAuto)
+	t.Cleanup(func() {
+		transport.SetMultiplayerConnectMode(transport.MultiplayerConnectAuto)
+	})
+}
+
+func enabledWGClientConfig() *assets.ClientConfig {
+	config := legacyWGClientConfig()
+	config.WG.Enabled = true
+	return config
+}
+
+func legacyWGClientConfig() *assets.ClientConfig {
+	return &assets.ClientConfig{
+		WG: &assets.ClientWGConfig{
+			ServerPubKey:     "server-pub",
+			ClientPrivateKey: "client-priv",
+			ClientIP:         "100.64.0.2",
+		},
+	}
+}

client/command/armory/install.go

@@ -301,32 +301,44 @@ func getCommandsInCache(armoryPK string) []string {
 	return commandNames
 }
 
+func packageMatchesInstallName(cacheEntry pkgCacheEntry, name string) bool {
+	if cacheEntry.Pkg.IsAlias {
+		return cacheEntry.Alias != nil && cacheEntry.Alias.CommandName == name
+	}
+	if cacheEntry.Extension == nil {
+		return false
+	}
+	if cacheEntry.Pkg.CommandName == name || cacheEntry.Extension.PackageName == name {
+		return true
+	}
+	for _, command := range cacheEntry.Extension.ExtCommand {
+		if command.CommandName == name {
+			return true
+		}
+	}
+	return false
+}
+
 func getPackagesWithCommandName(name, armoryPK, minimumVersion string) []*pkgCacheEntry {
 	packages := []*pkgCacheEntry{}
 
 	pkgCache.Range(func(key, value interface{}) bool {
 		cacheEntry := value.(pkgCacheEntry)
-		if cacheEntry.LastErr == nil {
-			if cacheEntry.Pkg.IsAlias {
-				if cacheEntry.Alias.CommandName == name {
-					if minimumVersion == "" || (minimumVersion != "" && cacheEntry.Alias.Version >= minimumVersion) {
-						if armoryPK == "" || (armoryPK != "" && cacheEntry.ArmoryConfig.PublicKey == armoryPK) {
-							packages = append(packages, &cacheEntry)
-						}
-					}
-				}
-			} else {
-				for _, command := range cacheEntry.Extension.ExtCommand {
-					if command.CommandName == name {
-						if minimumVersion == "" || (minimumVersion != "" && cacheEntry.Extension.Version >= minimumVersion) {
-							if armoryPK == "" || (armoryPK != "" && cacheEntry.ArmoryConfig.PublicKey == armoryPK) {
-								packages = append(packages, &cacheEntry)
-							}
-							break
-						}
-					}
-				}
-			}
+		if cacheEntry.LastErr != nil || !packageMatchesInstallName(cacheEntry, name) {
+			return true
+		}
+		if armoryPK != "" && cacheEntry.ArmoryConfig.PublicKey != armoryPK {
+			return true
+		}
+
+		packageVersion := ""
+		if cacheEntry.Pkg.IsAlias {
+			packageVersion = cacheEntry.Alias.Version
+		} else {
+			packageVersion = cacheEntry.Extension.Version
+		}
+		if minimumVersion == "" || packageVersion >= minimumVersion {
+			packages = append(packages, &cacheEntry)
 		}
 		return true
 	})
@@ -732,9 +744,7 @@ func installExtensionPackage(entry *pkgCacheEntry, promptToOverwrite bool, clien
 
 	con.Printf(console.Clearln + "\r") // Clear download message
 
-	extensions.InstallFromDir(tmpFileName, promptToOverwrite, con, true)
-
-	return nil
+	return extensions.InstallFromDir(tmpFileName, promptToOverwrite, con, true)
 }
 
 func writeArmoryTempFile(data []byte) (string, error) {

client/command/armory/install_test.go

@@ -0,0 +1,218 @@
+package armory
+
+import (
+	"errors"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/bishopfox/sliver/client/assets"
+	"github.com/bishopfox/sliver/client/command/alias"
+	"github.com/bishopfox/sliver/client/command/extensions"
+)
+
+func resetPackageCache(t *testing.T) {
+	t.Helper()
+	pkgCache.Range(func(key, _ any) bool {
+		pkgCache.Delete(key)
+		return true
+	})
+	t.Cleanup(func() {
+		pkgCache.Range(func(key, _ any) bool {
+			pkgCache.Delete(key)
+			return true
+		})
+	})
+}
+
+func testExtensionCacheEntry() pkgCacheEntry {
+	manifest := &extensions.ExtensionManifest{
+		Name:        "ADCS Request (Remote)",
+		PackageName: "remote-adcs-package",
+		Version:     "v0.1.5",
+		ArmoryName:  "Default Armory",
+		ArmoryPK:    "armory-public-key",
+		ExtCommand: []*extensions.ExtCommand{
+			{CommandName: "remote-adcs-request"},
+			{CommandName: "remote-adcs-request-on-behalf"},
+		},
+	}
+	return pkgCacheEntry{
+		ArmoryConfig: &assets.ArmoryConfig{PublicKey: "armory-public-key"},
+		Pkg: ArmoryPackage{
+			Name:        "Remote ADCS package",
+			CommandName: "remote-adcs-index",
+		},
+		Extension: manifest,
+		ID:        "remote-adcs-request-id",
+	}
+}
+
+func TestGetPackageForCommandAcceptsStableExtensionIdentities(t *testing.T) {
+	resetPackageCache(t)
+	entry := testExtensionCacheEntry()
+	pkgCache.Store(entry.ID, entry)
+
+	for _, name := range []string{
+		"remote-adcs-index",
+		"remote-adcs-request",
+		"remote-adcs-request-on-behalf",
+		"remote-adcs-package",
+	} {
+		t.Run(name, func(t *testing.T) {
+			found, err := getPackageForCommand(name, "armory-public-key", "v0.1.5")
+			if err != nil {
+				t.Fatalf("lookup %q failed: %v", name, err)
+			}
+			if found.ID != entry.ID {
+				t.Fatalf("lookup %q returned %q, want %q", name, found.ID, entry.ID)
+			}
+		})
+	}
+
+	if _, err := getPackageForCommand("remote-adcs-package", "other-armory", "v0.1.5"); !errors.Is(err, ErrPackageNotFound) {
+		t.Fatalf("wrong-armory lookup error = %v, want %v", err, ErrPackageNotFound)
+	}
+	if _, err := getPackageForCommand("remote-adcs-package", "armory-public-key", "v0.1.6"); !errors.Is(err, ErrPackageNotFound) {
+		t.Fatalf("newer-version lookup error = %v, want %v", err, ErrPackageNotFound)
+	}
+	for _, name := range []string{"ADCS Request (Remote)", "Remote ADCS package", "unknown-package"} {
+		if _, err := getPackageForCommand(name, "", ""); !errors.Is(err, ErrPackageNotFound) {
+			t.Fatalf("unstable identity %q lookup error = %v, want %v", name, err, ErrPackageNotFound)
+		}
+	}
+}
+
+func TestPackageMatchesInstallNameLeavesAliasesCommandOnly(t *testing.T) {
+	entry := pkgCacheEntry{
+		Pkg: ArmoryPackage{
+			Name:        "Human Alias Name",
+			CommandName: "alias-command",
+			IsAlias:     true,
+		},
+		Alias: &alias.AliasManifest{CommandName: "alias-command"},
+	}
+	if packageMatchesInstallName(entry, "Human Alias Name") {
+		t.Fatal("alias unexpectedly matched its display name")
+	}
+	if !packageMatchesInstallName(entry, "alias-command") {
+		t.Fatal("alias did not match its command name")
+	}
+}
+
+func TestExtensionManifestsMatch(t *testing.T) {
+	manifest := func(name, packageName string, commands ...string) *extensions.ExtensionManifest {
+		extCommands := make([]*extensions.ExtCommand, 0, len(commands))
+		for _, command := range commands {
+			extCommands = append(extCommands, &extensions.ExtCommand{CommandName: command})
+		}
+		return &extensions.ExtensionManifest{Name: name, PackageName: packageName, ExtCommand: extCommands}
+	}
+
+	tests := []struct {
+		name   string
+		local  *extensions.ExtensionManifest
+		latest *extensions.ExtensionManifest
+		want   bool
+	}{
+		{
+			name:   "v2 package identity",
+			local:  manifest("Old Display Name", "stable-package", "old-command"),
+			latest: manifest("New Display Name", "stable-package", "new-command"),
+			want:   true,
+		},
+		{
+			name:   "different v2 packages",
+			local:  manifest("Shared Display Name", "package-one", "shared-command"),
+			latest: manifest("Shared Display Name", "package-two", "shared-command"),
+			want:   false,
+		},
+		{
+			name:   "v2 does not downgrade to legacy identity",
+			local:  manifest("Human Display Name", "stable-package", "shared-command"),
+			latest: manifest("legacy-command", "", "shared-command"),
+			want:   false,
+		},
+		{
+			name:   "legacy command identity",
+			local:  manifest("legacy-command", "", "legacy-command"),
+			latest: manifest("Human Display Name", "stable-package", "other-command", "legacy-command"),
+			want:   true,
+		},
+		{
+			name:   "display names are not identity",
+			local:  manifest("Shared Name", "", "old-command"),
+			latest: manifest("Shared Name", "stable-package", "new-command"),
+			want:   false,
+		},
+		{
+			name:   "unrelated legacy package",
+			local:  manifest("Old Name", "", "old-command"),
+			latest: manifest("New Name", "stable-package", "new-command"),
+			want:   false,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if got := extensionManifestsMatch(test.local, test.latest); got != test.want {
+				t.Fatalf("extensionManifestsMatch() = %t, want %t", got, test.want)
+			}
+		})
+	}
+}
+
+func TestExtensionUpdateDisplayNameResolvesPackage(t *testing.T) {
+	resetPackageCache(t)
+	t.Setenv("SLIVER_CLIENT_ROOT_DIR", t.TempDir())
+
+	installedManifest := []byte(`{
+		"name":"ADCS Request (Remote)",
+		"package_name":"remote-adcs-package",
+		"version":"v0.1.3",
+		"commands":[{
+			"command_name":"remote-adcs-request",
+			"help":"Request a certificate",
+			"files":[{"os":"windows","arch":"amd64","path":"adcs_request.x64.o"}]
+		}]
+	}`)
+	installDir := filepath.Join(assets.GetExtensionsDir(), "remote-adcs-request")
+	if err := os.MkdirAll(installDir, 0o700); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(installDir, extensions.ManifestFileName), installedManifest, 0o600); err != nil {
+		t.Fatal(err)
+	}
+
+	entry := testExtensionCacheEntry()
+	pkgCache.Store(entry.ID, entry)
+	otherEntry := testExtensionCacheEntry()
+	otherEntry.ID = "other-armory-package-id"
+	otherEntry.ArmoryConfig = &assets.ArmoryConfig{PublicKey: "other-armory"}
+	otherManifest := *otherEntry.Extension
+	otherManifest.Version = "v9.0.0"
+	otherManifest.ArmoryName = "Other Armory"
+	otherManifest.ArmoryPK = "other-armory"
+	otherEntry.Extension = &otherManifest
+	pkgCache.Store(otherEntry.ID, otherEntry)
+
+	updates := checkForExtensionUpdates("armory-public-key")
+	versionInfo, ok := updates["ADCS Request (Remote)"]
+	if !ok {
+		t.Fatal("display-name update was not detected")
+	}
+	if versionInfo.OldVersion != "v0.1.3" || versionInfo.NewVersion != "v0.1.5" {
+		t.Fatalf("unexpected versions: %#v", versionInfo)
+	}
+	if versionInfo.PackageID != entry.ID {
+		t.Fatalf("update package ID = %q, want %q", versionInfo.PackageID, entry.ID)
+	}
+
+	found := packageCacheLookupByID(versionInfo.PackageID)
+	if found == nil {
+		t.Fatal("detected update package is missing from the cache")
+	}
+	if found.ID != entry.ID {
+		t.Fatalf("resolved package %q, want %q", found.ID, entry.ID)
+	}
+}

client/command/armory/update.go

@@ -40,6 +40,7 @@ type VersionInformation struct {
 	OldVersion string
 	NewVersion string
 	ArmoryName string
+	PackageID  string
 }
 
 type PackageType uint
@@ -124,9 +125,9 @@ func ArmoryUpdateCmd(cmd *cobra.Command, con *console.SliverClient, args []strin
 			if !ok {
 				continue
 			}
-			updatedPackage, err := getPackageForCommand(update.Name, armoryPK, extVersionInfo.NewVersion)
-			if err != nil {
-				con.PrintErrorf("Could not get update package for extension %s: %s\n", update.Name, err)
+			updatedPackage := packageCacheLookupByID(extVersionInfo.PackageID)
+			if updatedPackage == nil {
+				con.PrintErrorf("Could not get update package for extension %s: %s\n", update.Name, ErrPackageNotFound)
 				continue
 			}
 			err = installExtensionPackage(updatedPackage, false, clientConfig, con)
@@ -173,8 +174,21 @@ func checkForAliasUpdates(armoryPK string) map[string]VersionInformation {
 	return results
 }
 
+func extensionManifestsMatch(localManifest, latestManifest *extensions.ExtensionManifest) bool {
+	if localManifest.PackageName != "" {
+		return latestManifest.PackageName != "" && localManifest.PackageName == latestManifest.PackageName
+	}
+	for _, localCommand := range localManifest.ExtCommand {
+		for _, latestCommand := range latestManifest.ExtCommand {
+			if localCommand.CommandName == latestCommand.CommandName {
+				return true
+			}
+		}
+	}
+	return false
+}
+
 func checkForExtensionUpdates(armoryPK string) map[string]VersionInformation {
-	_, cachedExtensions := packageManifestsInCache()
 	// Return a map of extension name to minimum version to install
 	results := make(map[string]VersionInformation)
 	for _, extManifestPath := range assets.GetInstalledExtensionManifests() {
@@ -186,7 +200,12 @@ func checkForExtensionUpdates(armoryPK string) map[string]VersionInformation {
 		if err != nil {
 			continue
 		}
-		for _, latestExt := range cachedExtensions {
+		pkgCache.Range(func(_, value interface{}) bool {
+			cacheEntry, ok := value.(pkgCacheEntry)
+			if !ok || cacheEntry.LastErr != nil || cacheEntry.Pkg.IsAlias || cacheEntry.Extension == nil {
+				return true
+			}
+			latestExt := cacheEntry.Extension
 			/*
 				We used to check if the version identifiers were different between the installed version and the
 				version in the armory. This worked when we had one armory, but with multiple potential armories,
@@ -194,16 +213,22 @@ func checkForExtensionUpdates(armoryPK string) map[string]VersionInformation {
 				so we will rely on the author of the package incrementing the version identifier somehow to determine
 				if a package is newer.
 			*/
-			if latestExt.Name == localManifest.Name && latestExt.Version > localManifest.Version {
+			if extensionManifestsMatch(localManifest, latestExt) && latestExt.Version > localManifest.Version {
 				if latestExt.ArmoryPK == armoryPK || armoryPK == "" {
-					results[localManifest.Name] = VersionInformation{
-						OldVersion: localManifest.Version,
-						NewVersion: latestExt.Version,
-						ArmoryName: latestExt.ArmoryName,
+					current, found := results[localManifest.Name]
+					if !found || latestExt.Version > current.NewVersion ||
+						(latestExt.Version == current.NewVersion && cacheEntry.ID < current.PackageID) {
+						results[localManifest.Name] = VersionInformation{
+							OldVersion: localManifest.Version,
+							NewVersion: latestExt.Version,
+							ArmoryName: latestExt.ArmoryName,
+							PackageID:  cacheEntry.ID,
+						}
 					}
 				}
 			}
-		}
+			return true
+		})
 	}
 
 	return results

client/command/extensions/extensions_test.go

@@ -1,10 +1,28 @@
 package extensions
 
 import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
 	"encoding/json"
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
 	"testing"
+	"time"
 
+	"github.com/bishopfox/sliver/client/console"
+	consts "github.com/bishopfox/sliver/client/constants"
+	"github.com/bishopfox/sliver/protobuf/clientpb"
+	"github.com/bishopfox/sliver/protobuf/commonpb"
+	"github.com/bishopfox/sliver/protobuf/rpcpb"
+	"github.com/bishopfox/sliver/protobuf/sliverpb"
 	"github.com/bishopfox/sliver/util"
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc"
+	"google.golang.org/protobuf/proto"
 )
 
 /*
@@ -115,6 +133,101 @@ const (
 	}`
 )
 
+type registerExtensionTestRPC struct {
+	rpcpb.SliverRPCClient
+	register func(context.Context, *sliverpb.RegisterExtensionReq, ...grpc.CallOption) (*sliverpb.RegisterExtension, error)
+}
+
+func (f *registerExtensionTestRPC) RegisterExtension(ctx context.Context, req *sliverpb.RegisterExtensionReq, opts ...grpc.CallOption) (*sliverpb.RegisterExtension, error) {
+	return f.register(ctx, req, opts...)
+}
+
+func newExtensionTestConsole(t *testing.T, rpc rpcpb.SliverRPCClient, session *clientpb.Session, beacon *clientpb.Beacon) *console.SliverClient {
+	t.Helper()
+
+	con := console.NewConsole(false)
+	con.IsCLI = true
+	con.Rpc = rpc
+	con.ActiveTarget.Set(session, beacon)
+	return con
+}
+
+func TestRemoveExtensionByManifestNameOnlyDeletesManagedExtensions(t *testing.T) {
+	clientRoot := t.TempDir()
+	t.Setenv("SLIVER_CLIENT_ROOT_DIR", clientRoot)
+
+	originalManifests := loadedManifests
+	originalExtensions := loadedExtensions
+	t.Cleanup(func() {
+		loadedManifests = originalManifests
+		loadedExtensions = originalExtensions
+	})
+
+	tests := []struct {
+		name        string
+		extPath     string
+		wantDeleted bool
+	}{
+		{
+			name:        "installed extension",
+			extPath:     filepath.Join(clientRoot, "extensions", "installed"),
+			wantDeleted: true,
+		},
+		{
+			name:        "temporarily loaded extension",
+			extPath:     t.TempDir(),
+			wantDeleted: false,
+		},
+		{
+			name:        "extensions directory sibling",
+			extPath:     filepath.Join(clientRoot, "extensions-backup"),
+			wantDeleted: false,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if err := os.MkdirAll(test.extPath, 0o700); err != nil {
+				t.Fatalf("create extension directory: %v", err)
+			}
+			markerPath := filepath.Join(test.extPath, "source-code.txt")
+			if err := os.WriteFile(markerPath, []byte("keep me"), 0o600); err != nil {
+				t.Fatalf("create marker file: %v", err)
+			}
+
+			manifestName := "test-extension"
+			commandName := "test-command"
+			command := &ExtCommand{CommandName: commandName}
+			loadedManifests = map[string]*ExtensionManifest{
+				manifestName: {RootPath: test.extPath, ExtCommand: []*ExtCommand{command}},
+			}
+			loadedExtensions = map[string]*ExtCommand{commandName: command}
+
+			found, err := RemoveExtensionByManifestName(manifestName, nil)
+			if err != nil {
+				t.Fatalf("remove extension: %v", err)
+			}
+			if !found {
+				t.Fatal("expected extension manifest to be found")
+			}
+			if _, ok := loadedManifests[manifestName]; ok {
+				t.Error("manifest was not unloaded")
+			}
+			if _, ok := loadedExtensions[commandName]; ok {
+				t.Error("command was not unloaded")
+			}
+
+			_, err = os.Stat(markerPath)
+			if test.wantDeleted && !os.IsNotExist(err) {
+				t.Errorf("managed extension directory was not deleted: %v", err)
+			}
+			if !test.wantDeleted && err != nil {
+				t.Errorf("external extension directory was modified: %v", err)
+			}
+		})
+	}
+}
+
 func TestParseExtensionManifest(t *testing.T) {
 	expectedPath := util.ResolvePath("foo/test1.dll")
 
@@ -189,6 +302,218 @@ func TestParseExtensionManifest(t *testing.T) {
 
 }
 
+func TestConvertOldManifestPreservesInit(t *testing.T) {
+	const initExport = "InitializeExtension"
+
+	manifest, err := ParseExtensionManifest([]byte(`{
+		"name": "legacy-test",
+		"command_name": "legacy-test",
+		"help": "some help",
+		"init": "InitializeExtension",
+		"files": [
+			{
+				"os": "windows",
+				"arch": "amd64",
+				"path": "foo/test.dll"
+			}
+		]
+	}`))
+	if err != nil {
+		t.Fatalf("Error parsing legacy extension manifest: %s", err)
+	}
+	if len(manifest.ExtCommand) != 1 {
+		t.Fatalf("Expected 1 extension command, got %d", len(manifest.ExtCommand))
+	}
+	if manifest.ExtCommand[0].Init != initExport {
+		t.Errorf("Expected init export %q, got %q", initExport, manifest.ExtCommand[0].Init)
+	}
+}
+
+func TestRegisterExtensionPropagatesInit(t *testing.T) {
+	const initExport = "InitializeExtension"
+
+	tests := []struct {
+		name      string
+		session   *clientpb.Session
+		beacon    *clientpb.Beacon
+		wantAsync bool
+		wantID    string
+	}{
+		{
+			name:    "session",
+			session: &clientpb.Session{ID: "session-id"},
+			wantID:  "session-id",
+		},
+		{
+			name:      "beacon",
+			beacon:    &clientpb.Beacon{ID: "beacon-id"},
+			wantAsync: true,
+			wantID:    "beacon-id",
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			var gotReq *sliverpb.RegisterExtensionReq
+			rpc := &registerExtensionTestRPC{
+				register: func(_ context.Context, req *sliverpb.RegisterExtensionReq, _ ...grpc.CallOption) (*sliverpb.RegisterExtension, error) {
+					gotReq = req
+					return &sliverpb.RegisterExtension{Response: &commonpb.Response{}}, nil
+				},
+			}
+			con := newExtensionTestConsole(t, rpc, test.session, test.beacon)
+
+			err := registerExtension("linux", &ExtCommand{CommandName: "test", Init: initExport}, []byte("extension"), nil, con)
+			if err != nil {
+				t.Fatalf("RegisterExtension returned an error: %s", err)
+			}
+			if gotReq == nil {
+				t.Fatal("RegisterExtension RPC was not called")
+			}
+			if gotReq.Init != initExport {
+				t.Errorf("Expected init export %q, got %q", initExport, gotReq.Init)
+			}
+			if gotReq.Request.GetAsync() != test.wantAsync {
+				t.Errorf("Expected async=%t, got %t", test.wantAsync, gotReq.Request.GetAsync())
+			}
+			if test.wantAsync && gotReq.Request.GetBeaconID() != test.wantID {
+				t.Errorf("Expected beacon ID %q, got %q", test.wantID, gotReq.Request.GetBeaconID())
+			}
+			if !test.wantAsync && gotReq.Request.GetSessionID() != test.wantID {
+				t.Errorf("Expected session ID %q, got %q", test.wantID, gotReq.Request.GetSessionID())
+			}
+		})
+	}
+}
+
+func TestRegisterExtensionWaitsForBeaconRegistration(t *testing.T) {
+	started := make(chan struct{})
+	release := make(chan struct{})
+	rpc := &registerExtensionTestRPC{
+		register: func(_ context.Context, _ *sliverpb.RegisterExtensionReq, _ ...grpc.CallOption) (*sliverpb.RegisterExtension, error) {
+			close(started)
+			<-release
+			return &sliverpb.RegisterExtension{Response: &commonpb.Response{Async: true}}, nil
+		},
+	}
+	con := newExtensionTestConsole(t, rpc, nil, &clientpb.Beacon{ID: "beacon-id"})
+	done := make(chan error, 1)
+	go func() {
+		done <- registerExtension("linux", &ExtCommand{CommandName: "test"}, []byte("extension"), nil, con)
+	}()
+
+	select {
+	case <-started:
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for RegisterExtension RPC")
+	}
+	select {
+	case err := <-done:
+		t.Fatalf("RegisterExtension returned before the beacon registration was enqueued: %v", err)
+	case <-time.After(100 * time.Millisecond):
+	}
+	close(release)
+	select {
+	case err := <-done:
+		if err != nil {
+			t.Fatalf("RegisterExtension returned an error: %s", err)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for RegisterExtension to return")
+	}
+}
+
+func TestRegisterExtensionReturnsBeaconRPCError(t *testing.T) {
+	wantErr := errors.New("register failed")
+	rpc := &registerExtensionTestRPC{
+		register: func(_ context.Context, _ *sliverpb.RegisterExtensionReq, _ ...grpc.CallOption) (*sliverpb.RegisterExtension, error) {
+			return nil, wantErr
+		},
+	}
+	con := newExtensionTestConsole(t, rpc, nil, &clientpb.Beacon{ID: "beacon-id"})
+
+	err := registerExtension("linux", &ExtCommand{CommandName: "test"}, []byte("extension"), nil, con)
+	if !errors.Is(err, wantErr) {
+		t.Fatalf("Expected error %q, got %v", wantErr, err)
+	}
+}
+
+func TestRegisterExtensionRejectsNilResponse(t *testing.T) {
+	rpc := &registerExtensionTestRPC{
+		register: func(_ context.Context, _ *sliverpb.RegisterExtensionReq, _ ...grpc.CallOption) (*sliverpb.RegisterExtension, error) {
+			return nil, nil
+		},
+	}
+	con := newExtensionTestConsole(t, rpc, &clientpb.Session{ID: "session-id"}, nil)
+
+	if err := registerExtension("linux", &ExtCommand{CommandName: "test"}, []byte("extension"), nil, con); err == nil {
+		t.Fatal("RegisterExtension accepted a nil response")
+	}
+}
+
+func TestExtensionCommandVisibilityUsesExactTargetPairs(t *testing.T) {
+	extension := &ExtCommand{Files: []*extensionFile{
+		{OS: "windows", Arch: "amd64"},
+		{OS: "linux", Arch: "amd64"},
+		{OS: "darwin", Arch: "arm64"},
+	}}
+
+	tests := []struct {
+		name        string
+		session     *clientpb.Session
+		beacon      *clientpb.Beacon
+		wantVisible bool
+	}{
+		{
+			name:        "cross-platform Linux session",
+			session:     &clientpb.Session{OS: "linux", Arch: "amd64"},
+			wantVisible: true,
+		},
+		{
+			name:        "cross-platform macOS beacon",
+			beacon:      &clientpb.Beacon{OS: "darwin", Arch: "arm64"},
+			wantVisible: true,
+		},
+		{
+			name:        "cross-platform Windows session",
+			session:     &clientpb.Session{OS: "windows", Arch: "amd64"},
+			wantVisible: true,
+		},
+		{
+			name:        "Linux architecture mismatch",
+			session:     &clientpb.Session{OS: "linux", Arch: "arm64"},
+			wantVisible: false,
+		},
+		{
+			name:        "macOS architecture mismatch",
+			beacon:      &clientpb.Beacon{OS: "darwin", Arch: "amd64"},
+			wantVisible: false,
+		},
+		{
+			name:        "Windows architecture mismatch",
+			session:     &clientpb.Session{OS: "windows", Arch: "386"},
+			wantVisible: false,
+		},
+		{
+			name:        "unsupported native extension target",
+			beacon:      &clientpb.Beacon{OS: "linux", Arch: "riscv64"},
+			wantVisible: false,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			con := newExtensionTestConsole(t, nil, test.session, test.beacon)
+			command := &cobra.Command{Annotations: makeCommandPlatformFilters(extension)}
+			activeFilters := con.App.Menu(consts.ImplantMenu).ActiveFiltersFor(command)
+			visible := len(activeFilters) == 0
+			if visible != test.wantVisible {
+				t.Fatalf("command visibility = %t, want %t (active filters: %v)", visible, test.wantVisible, activeFilters)
+			}
+		})
+	}
+}
+
 func TestParseMultipleCmdManifest(t *testing.T) {
 	expectedPath := util.ResolvePath("ex.dll")
 
@@ -323,3 +648,285 @@ func TestParseExtensionManifestErrors(t *testing.T) {
 		}
 	}
 }
+
+func TestParseExtensionManifestBOFExecutor(t *testing.T) {
+	tests := []struct {
+		name string
+		data string
+		want string
+	}{
+		{
+			name: "multi-command manifest",
+			data: `{
+				"name":"modern-bof",
+				"commands":[{
+					"command_name":"modern-bof",
+					"help":"test",
+					"bof_executor":"reflektor",
+					"files":[{"os":"windows","arch":"amd64","path":"modern.o"}]
+				}]
+			}`,
+			want: BOFExecutorReflektor,
+		},
+		{
+			name: "legacy manifest",
+			data: `{
+				"name":"legacy-bof",
+				"command_name":"legacy-bof",
+				"help":"test",
+				"bof_executor":"coff-loader",
+				"depends_on":"custom-loader",
+				"files":[{"os":"windows","arch":"amd64","path":"legacy.o"}]
+			}`,
+			want: BOFExecutorCOFFLoader,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			manifest, err := ParseExtensionManifest([]byte(test.data))
+			if err != nil {
+				t.Fatalf("ParseExtensionManifest returned an error: %s", err)
+			}
+			if got := manifest.ExtCommand[0].BOFExecutor; got != test.want {
+				t.Fatalf("BOFExecutor = %q, want %q", got, test.want)
+			}
+		})
+	}
+}
+
+func TestParseExtensionManifestRejectsInvalidBOFExecutor(t *testing.T) {
+	tests := []struct {
+		name        string
+		executor    string
+		dependsOn   string
+		wantErrPart string
+	}{
+		{
+			name:        "executor must be exact lowercase",
+			executor:    "Reflektor",
+			wantErrPart: "invalid `bof_executor`",
+		},
+		{
+			name:        "unknown executor",
+			executor:    "other-loader",
+			wantErrPart: "invalid `bof_executor`",
+		},
+		{
+			name:        "coff loader requires dependency",
+			executor:    BOFExecutorCOFFLoader,
+			wantErrPart: "no `depends_on` fallback",
+		},
+		{
+			name:        "coff loader rejects whitespace dependency",
+			executor:    BOFExecutorCOFFLoader,
+			dependsOn:   " \t",
+			wantErrPart: "no `depends_on` fallback",
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			manifest := &ExtensionManifest{
+				Name: "test",
+				ExtCommand: []*ExtCommand{{
+					CommandName: "test",
+					Help:        "test",
+					BOFExecutor: test.executor,
+					DependsOn:   test.dependsOn,
+					Files: []*extensionFile{{
+						OS: "windows", Arch: "amd64", Path: "test.o",
+					}},
+				}},
+			}
+			err := validManifest(manifest)
+			if err == nil || !strings.Contains(err.Error(), test.wantErrPart) {
+				t.Fatalf("validManifest error = %v, want error containing %q", err, test.wantErrPart)
+			}
+		})
+	}
+}
+
+func TestPlanExtensionExecution(t *testing.T) {
+	tests := []struct {
+		name         string
+		ext          *ExtCommand
+		path         string
+		capabilities uint64
+		want         extensionExecutionMode
+		wantErr      bool
+	}{
+		{
+			name: "native artifact remains native",
+			ext:  &ExtCommand{CommandName: "native"},
+			path: "native.dll",
+			want: extensionExecutionNative,
+		},
+		{
+			name:         "legacy manifest keeps dependency route",
+			ext:          &ExtCommand{CommandName: "legacy", DependsOn: "coff-loader"},
+			path:         "legacy.o",
+			capabilities: sliverpb.CapabilityBOFV1,
+			want:         extensionExecutionCOFFLoader,
+		},
+		{
+			name:         "explicit coff loader is authoritative",
+			ext:          &ExtCommand{CommandName: "coff", BOFExecutor: BOFExecutorCOFFLoader, DependsOn: "custom-loader"},
+			path:         "coff.bin",
+			capabilities: sliverpb.CapabilityBOFV1,
+			want:         extensionExecutionCOFFLoader,
+		},
+		{
+			name:         "explicit Reflektor uses capable target",
+			ext:          &ExtCommand{CommandName: "builtin", BOFExecutor: BOFExecutorReflektor, DependsOn: "coff-loader"},
+			path:         "builtin.o",
+			capabilities: sliverpb.CapabilityBOFV1,
+			want:         extensionExecutionReflektor,
+		},
+		{
+			name: "explicit Reflektor falls back to dependency",
+			ext:  &ExtCommand{CommandName: "fallback", BOFExecutor: BOFExecutorReflektor, DependsOn: "coff-loader"},
+			path: "fallback.o",
+			want: extensionExecutionCOFFLoader,
+		},
+		{
+			name:         "dependency-free BOF defaults to Reflektor",
+			ext:          &ExtCommand{CommandName: "default"},
+			path:         "default.o",
+			capabilities: sliverpb.CapabilityBOFV1,
+			want:         extensionExecutionReflektor,
+		},
+		{
+			name:         "uppercase object extension is a BOF",
+			ext:          &ExtCommand{CommandName: "uppercase"},
+			path:         "uppercase.O",
+			capabilities: sliverpb.CapabilityBOFV1,
+			want:         extensionExecutionReflektor,
+		},
+		{
+			name:    "unsupported dependency-free BOF fails closed",
+			ext:     &ExtCommand{CommandName: "unsupported"},
+			path:    "unsupported.o",
+			wantErr: true,
+		},
+		{
+			name:    "coff loader without dependency fails closed",
+			ext:     &ExtCommand{CommandName: "missing", BOFExecutor: BOFExecutorCOFFLoader},
+			path:    "missing.o",
+			wantErr: true,
+		},
+		{
+			name:         "invalid executor fails closed",
+			ext:          &ExtCommand{CommandName: "invalid", BOFExecutor: "other"},
+			path:         "invalid.o",
+			capabilities: sliverpb.CapabilityBOFV1,
+			wantErr:      true,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			got, err := planExtensionExecution(test.ext, test.path, test.capabilities)
+			if test.wantErr {
+				if err == nil {
+					t.Fatalf("planExtensionExecution returned mode %d, want error", got)
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("planExtensionExecution returned an error: %s", err)
+			}
+			if got != test.want {
+				t.Fatalf("planExtensionExecution mode = %d, want %d", got, test.want)
+			}
+		})
+	}
+}
+
+func TestBuildCallExtensionRequestPreservesLegacyWireFields(t *testing.T) {
+	root := t.TempDir()
+	objectData := []byte("object-data")
+	loaderData := []byte("loader-data")
+	objectPath := filepath.Join(root, "object.o")
+	loaderPath := filepath.Join(root, "loader.dll")
+	if err := os.WriteFile(objectPath, objectData, 0o600); err != nil {
+		t.Fatalf("write object fixture: %s", err)
+	}
+	if err := os.WriteFile(loaderPath, loaderData, 0o600); err != nil {
+		t.Fatalf("write loader fixture: %s", err)
+	}
+
+	const loaderName = "custom-loader"
+	previousLoader, hadPreviousLoader := loadedExtensions[loaderName]
+	defer func() {
+		if hadPreviousLoader {
+			loadedExtensions[loaderName] = previousLoader
+		} else {
+			delete(loadedExtensions, loaderName)
+		}
+	}()
+	loaderManifest := &ExtensionManifest{Name: loaderName, RootPath: root}
+	loadedExtensions[loaderName] = &ExtCommand{
+		CommandName: loaderName,
+		Entrypoint:  "RunCOFF",
+		Files: []*extensionFile{{
+			OS: "windows", Arch: "amd64", Path: filepath.Base(loaderPath),
+		}},
+		Manifest: loaderManifest,
+	}
+
+	legacyArgs := []byte{0x01, 0x02, 0x03, 0x04}
+	ext := &ExtCommand{CommandName: "test-bof", DependsOn: loaderName}
+	got, err := buildCallExtensionRequest("windows", "amd64", extensionExecutionCOFFLoader, ext, objectPath, "RunCOFF", legacyArgs)
+	if err != nil {
+		t.Fatalf("buildCallExtensionRequest returned an error: %s", err)
+	}
+	loaderHash := sha256.Sum256(loaderData)
+	want := &sliverpb.CallExtensionReq{
+		Name:   hex.EncodeToString(loaderHash[:]),
+		Export: "RunCOFF",
+		Args:   legacyArgs,
+	}
+	gotWire, err := proto.Marshal(got)
+	if err != nil {
+		t.Fatalf("marshal actual request: %s", err)
+	}
+	wantWire, err := proto.Marshal(want)
+	if err != nil {
+		t.Fatalf("marshal expected request: %s", err)
+	}
+	if !bytes.Equal(gotWire, wantWire) {
+		t.Fatalf("legacy request wire bytes changed:\n got: %x\nwant: %x", gotWire, wantWire)
+	}
+}
+
+func TestBuildCallExtensionRequestForReflektor(t *testing.T) {
+	root := t.TempDir()
+	objectData := []byte("object-data")
+	objectPath := filepath.Join(root, "object.o")
+	if err := os.WriteFile(objectPath, objectData, 0o600); err != nil {
+		t.Fatalf("write object fixture: %s", err)
+	}
+
+	typedArgs := []byte{0x05, 0x06}
+	got, err := buildCallExtensionRequest("windows", "amd64", extensionExecutionReflektor, &ExtCommand{CommandName: "test-bof"}, objectPath, "go", typedArgs)
+	if err != nil {
+		t.Fatalf("buildCallExtensionRequest returned an error: %s", err)
+	}
+	objectHash := sha256.Sum256(objectData)
+	if got.Name != hex.EncodeToString(objectHash[:]) {
+		t.Errorf("Name = %q, want object hash %q", got.Name, hex.EncodeToString(objectHash[:]))
+	}
+	if got.Export != "go" {
+		t.Errorf("Export = %q, want %q", got.Export, "go")
+	}
+	if !bytes.Equal(got.Args, typedArgs) {
+		t.Errorf("Args = %x, want %x", got.Args, typedArgs)
+	}
+	if !bytes.Equal(got.BOFData, objectData) {
+		t.Errorf("BOFData = %q, want %q", got.BOFData, objectData)
+	}
+	if !got.IsBOF {
+		t.Error("IsBOF = false, want true")
+	}
+}

client/command/extensions/install.go

@@ -40,7 +40,21 @@ func ExtensionsInstallCmd(cmd *cobra.Command, con *console.SliverClient, args []
 		con.PrintErrorf("Extension path '%s' does not exist", extLocalPath)
 		return
 	}
-	InstallFromDir(extLocalPath, true, con, strings.HasSuffix(extLocalPath, ".tar.gz"))
+	_ = InstallFromDir(extLocalPath, true, con, strings.HasSuffix(extLocalPath, ".tar.gz"))
+}
+
+func readExtensionManifest(extLocalPath string, isGz bool) ([]byte, error) {
+	if isGz {
+		return util.ReadFileFromTarGz(extLocalPath, fmt.Sprintf("./%s", ManifestFileName))
+	}
+	return os.ReadFile(filepath.Join(extLocalPath, ManifestFileName))
+}
+
+func extensionPackageID(manifest *ExtensionManifest) string {
+	if manifest.PackageName != "" {
+		return manifest.PackageName
+	}
+	return manifest.Name
 }
 
 // InstallFromDir installs a Sliver extension from either a local directory or gzipped archive.
@@ -54,37 +68,28 @@ func ExtensionsInstallCmd(cmd *cobra.Command, con *console.SliverClient, args []
 //   - con: Sliver console client for displaying status and error messages
 //   - isGz: Whether the source is a gzipped archive (true) or directory (false)
 //
-// The function will return early with error messages printed to console if:
+// The function returns errors after printing them to the console if:
 //   - The manifest cannot be read or parsed
 //   - Required directories cannot be created
 //   - File copy operations fail
-//   - User declines overwrite when prompted
-func InstallFromDir(extLocalPath string, promptToOverwrite bool, con *console.SliverClient, isGz bool) {
-	var manifestData []byte
-	var err error
-
-	if isGz {
-		manifestData, err = util.ReadFileFromTarGz(extLocalPath, fmt.Sprintf("./%s", ManifestFileName))
-	} else {
-		manifestData, err = os.ReadFile(filepath.Join(extLocalPath, ManifestFileName))
-	}
+//
+// Declining an overwrite prompt cancels the installation without an error.
+func InstallFromDir(extLocalPath string, promptToOverwrite bool, con *console.SliverClient, isGz bool) error {
+	manifestData, err := readExtensionManifest(extLocalPath, isGz)
 	if err != nil {
 		con.PrintErrorf("Error reading %s: %s", ManifestFileName, err)
-		return
+		return fmt.Errorf("read %s: %w", ManifestFileName, err)
 	}
 
 	manifestF, err := ParseExtensionManifest(manifestData)
 	if err != nil {
 		con.PrintErrorf("Error parsing %s: %s", ManifestFileName, err)
-		return
+		return fmt.Errorf("parse %s: %w", ManifestFileName, err)
 	}
 
 	// Use package name if available, otherwise use extension name
 	// (Note, for v1 manifests this will actually be command_name)
-	packageID := manifestF.Name
-	if manifestF.PackageName != "" {
-		packageID = manifestF.PackageName
-	}
+	packageID := extensionPackageID(manifestF)
 
 	//create repo path
 	minstallPath := filepath.Join(assets.GetExtensionsDir(), filepath.Base(packageID))
@@ -94,7 +99,7 @@ func InstallFromDir(extLocalPath string, promptToOverwrite bool, con *console.Sl
 			confirm := false
 			_ = forms.Confirm("Overwrite current install?", &confirm)
 			if !confirm {
-				return
+				return nil
 			}
 		}
 		forceRemoveAll(minstallPath)
@@ -103,13 +108,13 @@ func InstallFromDir(extLocalPath string, promptToOverwrite bool, con *console.Sl
 	err = os.MkdirAll(minstallPath, 0o700)
 	if err != nil {
 		con.PrintErrorf("Error creating extension directory: %s\n", err)
-		return
+		return fmt.Errorf("create extension directory: %w", err)
 	}
 	err = os.WriteFile(filepath.Join(minstallPath, ManifestFileName), manifestData, 0o600)
 	if err != nil {
 		con.PrintErrorf("Failed to write %s: %s\n", ManifestFileName, err)
 		forceRemoveAll(minstallPath)
-		return
+		return fmt.Errorf("write %s: %w", ManifestFileName, err)
 	}
 
 	for _, manifest := range manifestF.ExtCommand {
@@ -125,7 +130,7 @@ func InstallFromDir(extLocalPath string, promptToOverwrite bool, con *console.Sl
 					if err != nil {
 						con.PrintErrorf("\nError creating extension directory: %s\n", err)
 						forceRemoveAll(installPath)
-						return
+						return fmt.Errorf("create extension artifact directory: %w", err)
 					}
 					err = util.CopyFile(src, dst)
 					if err != nil {
@@ -135,11 +140,12 @@ func InstallFromDir(extLocalPath string, promptToOverwrite bool, con *console.Sl
 				if err != nil {
 					con.PrintErrorf("Error installing command: %s\n", err)
 					forceRemoveAll(installPath)
-					return
+					return fmt.Errorf("install extension artifact: %w", err)
 				}
 			}
 		}
 	}
+	return nil
 }
 
 func installArtifact(extGzFilePath string, installPath string, artifactPath string) error {

client/command/extensions/install_test.go

@@ -0,0 +1,135 @@
+package extensions
+
+import (
+	"archive/tar"
+	"errors"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/bishopfox/sliver/client/assets"
+	"github.com/bishopfox/sliver/client/console"
+	"github.com/klauspost/compress/gzip"
+	"github.com/spf13/cobra"
+)
+
+type installArchiveMember struct {
+	name string
+	data []byte
+}
+
+const installTestManifest = `{
+	"name": "Test Extension",
+	"package_name": "test-extension",
+	"version": "v1.0.0",
+	"commands": [{
+		"command_name": "test-command",
+		"help": "test command",
+		"files": [{"os": "windows", "arch": "amd64", "path": "foo/test.dll"}]
+	}]
+}`
+
+func writeInstallArchive(t *testing.T, prefix string, members ...installArchiveMember) string {
+	t.Helper()
+	archivePath := filepath.Join(t.TempDir(), "extension.tar.gz")
+	archive, err := os.Create(archivePath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	gzipWriter := gzip.NewWriter(archive)
+	tarWriter := tar.NewWriter(gzipWriter)
+	for _, member := range members {
+		header := &tar.Header{
+			Name:     prefix + member.name,
+			Mode:     0o600,
+			Size:     int64(len(member.data)),
+			Typeflag: tar.TypeReg,
+		}
+		if err := tarWriter.WriteHeader(header); err != nil {
+			t.Fatal(err)
+		}
+		if _, err := tarWriter.Write(member.data); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := tarWriter.Close(); err != nil {
+		t.Fatal(err)
+	}
+	if err := gzipWriter.Close(); err != nil {
+		t.Fatal(err)
+	}
+	if err := archive.Close(); err != nil {
+		t.Fatal(err)
+	}
+	return archivePath
+}
+
+func testInstallConsole(t *testing.T) *console.SliverClient {
+	t.Helper()
+	con := console.NewConsole(false)
+	emptyCommands := func() *cobra.Command { return &cobra.Command{Use: "test"} }
+	if err := console.StartClient(
+		con, nil, nil, nil, emptyCommands, emptyCommands, false, "",
+	); err != nil {
+		t.Fatal(err)
+	}
+	return con
+}
+
+func TestInstallFromDirAcceptsPrefixedAndUnprefixedArchives(t *testing.T) {
+	for _, prefix := range []string{"./", ""} {
+		name := "unprefixed"
+		if prefix != "" {
+			name = "prefixed"
+		}
+		t.Run(name, func(t *testing.T) {
+			t.Setenv("SLIVER_CLIENT_ROOT_DIR", t.TempDir())
+			archivePath := writeInstallArchive(t, prefix,
+				installArchiveMember{name: ManifestFileName, data: []byte(installTestManifest)},
+				installArchiveMember{name: "foo/test.dll", data: []byte("extension data")},
+			)
+
+			if err := InstallFromDir(archivePath, false, testInstallConsole(t), true); err != nil {
+				t.Fatal(err)
+			}
+			installRoot := filepath.Join(assets.GetExtensionsDir(), "test-extension")
+			if _, err := os.Stat(filepath.Join(installRoot, ManifestFileName)); err != nil {
+				t.Fatalf("installed manifest: %v", err)
+			}
+			artifact, err := os.ReadFile(filepath.Join(installRoot, "foo", "test.dll"))
+			if err != nil {
+				t.Fatalf("installed artifact: %v", err)
+			}
+			if string(artifact) != "extension data" {
+				t.Fatalf("artifact data = %q", artifact)
+			}
+		})
+	}
+}
+
+func TestInstallFromDirReturnsMissingManifest(t *testing.T) {
+	t.Setenv("SLIVER_CLIENT_ROOT_DIR", t.TempDir())
+	archivePath := writeInstallArchive(t, "./",
+		installArchiveMember{name: "foo/test.dll", data: []byte("extension data")},
+	)
+	err := InstallFromDir(archivePath, false, testInstallConsole(t), true)
+	if !errors.Is(err, fs.ErrNotExist) {
+		t.Fatalf("error = %v, want fs.ErrNotExist", err)
+	}
+}
+
+func TestInstallFromDirReturnsMissingArtifactAndCleansUp(t *testing.T) {
+	t.Setenv("SLIVER_CLIENT_ROOT_DIR", t.TempDir())
+	archivePath := writeInstallArchive(t, "./",
+		installArchiveMember{name: ManifestFileName, data: []byte(installTestManifest)},
+	)
+	err := InstallFromDir(archivePath, false, testInstallConsole(t), true)
+	if !errors.Is(err, fs.ErrNotExist) {
+		t.Fatalf("error = %v, want fs.ErrNotExist", err)
+	}
+	installRoot := filepath.Join(assets.GetExtensionsDir(), "test-extension")
+	if _, err := os.Stat(installRoot); !errors.Is(err, fs.ErrNotExist) {
+		t.Fatalf("install directory was not cleaned up: %v", err)
+	}
+}

client/command/extensions/load.go

@@ -54,6 +54,20 @@ const (
 
 	// ManifestFileName - Extension manifest file name.
 	ManifestFileName = "extension.json"
+
+	// BOFExecutorReflektor selects the built-in Reflektor BOF executor.
+	BOFExecutorReflektor = "reflektor"
+
+	// BOFExecutorCOFFLoader selects the manifest's depends_on COFF loader.
+	BOFExecutorCOFFLoader = "coff-loader"
+)
+
+type extensionExecutionMode uint8
+
+const (
+	extensionExecutionNative extensionExecutionMode = iota
+	extensionExecutionCOFFLoader
+	extensionExecutionReflektor
 )
 
 var loadedExtensions = map[string]*ExtCommand{}
@@ -72,6 +86,7 @@ type ExtensionManifest_ struct {
 	Arguments       []*extensionArgument `json:"arguments"`
 	Entrypoint      string               `json:"entrypoint"`
 	DependsOn       string               `json:"depends_on"`
+	BOFExecutor     string               `json:"bof_executor"`
 	Init            string               `json:"init"`
 
 	RootPath string `json:"-"`
@@ -100,6 +115,7 @@ type ExtCommand struct {
 	Arguments   []*extensionArgument   `json:"arguments"`
 	Entrypoint  string                 `json:"entrypoint"`
 	DependsOn   string                 `json:"depends_on"`
+	BOFExecutor string                 `json:"bof_executor"`
 	Init        string                 `json:"init"`
 	Schema      *packages.OutputSchema `json:"schema"`
 
@@ -218,9 +234,11 @@ func convertOldManifest(old *ExtensionManifest_) *ExtensionManifest {
 			{
 				CommandName: old.CommandName,
 				DependsOn:   old.DependsOn,
+				BOFExecutor: old.BOFExecutor,
 				Help:        old.Help,
 				LongHelp:    old.LongHelp,
 				Entrypoint:  old.Entrypoint,
+				Init:        old.Init,
 				Files:       old.Files,
 				Arguments:   old.Arguments,
 				Schema:      nil,
@@ -270,6 +288,15 @@ func validManifest(manifest *ExtensionManifest) error {
 		if extManifest.CommandName == "" {
 			return errors.New("missing `command_name` field in extension manifest")
 		}
+		switch extManifest.BOFExecutor {
+		case "", BOFExecutorReflektor:
+		case BOFExecutorCOFFLoader:
+			if strings.TrimSpace(extManifest.DependsOn) == "" {
+				return fmt.Errorf("command %q uses bof_executor %q but has no `depends_on` fallback", extManifest.CommandName, BOFExecutorCOFFLoader)
+			}
+		default:
+			return fmt.Errorf("command %q has invalid `bof_executor` %q (must be %q or %q)", extManifest.CommandName, extManifest.BOFExecutor, BOFExecutorReflektor, BOFExecutorCOFFLoader)
+		}
 		if len(extManifest.Files) == 0 {
 			return errors.New("missing `files` field in extension manifest")
 		}
@@ -471,44 +498,30 @@ func registerExtension(goos string, ext *ExtCommand, binData []byte, cmd *cobra.
 	//set extension name to a hash of the data to avoid loading more than one instance
 	bd := sha256.Sum256(binData)
 	name := hex.EncodeToString(bd[:])
-	sess, beac := con.ActiveTarget.GetInteractive()
+	sess, _ := con.ActiveTarget.GetInteractive()
 	ctrl := make(chan bool)
 	//first time run of an extension will require some waiting depending on the size
 	if sess != nil {
 		msg := fmt.Sprintf("Sending %s to implant ...", ext.CommandName)
 		con.SpinUntil(msg, ctrl)
 	}
-	//don't block if we are in beacon mode
-	if beac != nil && sess == nil {
-		go func() {
-			registerResp, err := con.Rpc.RegisterExtension(context.Background(), &sliverpb.RegisterExtensionReq{
-				Name:    name,
-				Data:    binData,
-				OS:      goos,
-				Init:    ext.Init,
-				Request: con.ActiveTarget.Request(cmd),
-			})
-			if err != nil {
-				con.PrintErrorf("Error registering extension: %s\n", err)
-			}
-			if registerResp.Response != nil && registerResp.Response.Err != "" {
-				con.PrintErrorf("Error registering extension: %s\n", errors.New(registerResp.Response.Err))
-			}
-		}()
-		return nil
-	}
-	//session mode (hopefully)
 	registerResp, err := con.Rpc.RegisterExtension(context.Background(), &sliverpb.RegisterExtensionReq{
 		Name:    name,
 		Data:    binData,
 		OS:      goos,
+		Init:    ext.Init,
 		Request: con.ActiveTarget.Request(cmd),
 	})
-	ctrl <- true
-	<-ctrl
+	if sess != nil {
+		ctrl <- true
+		<-ctrl
+	}
 	if err != nil {
 		return err
 	}
+	if registerResp == nil {
+		return errors.New("received empty register extension response")
+	}
 	if registerResp.Response != nil && registerResp.Response.Err != "" {
 		return errors.New(registerResp.Response.Err)
 	}
@@ -531,6 +544,89 @@ func loadDep(goos string, goarch string, depName string, cmd *cobra.Command, con
 	return fmt.Errorf("missing dependency %s", depName)
 }
 
+func planExtensionExecution(ext *ExtCommand, binPath string, capabilities uint64) (extensionExecutionMode, error) {
+	isBOF := ext.BOFExecutor != "" || strings.EqualFold(filepath.Ext(binPath), ".o")
+	if !isBOF {
+		return extensionExecutionNative, nil
+	}
+	dependsOn := strings.TrimSpace(ext.DependsOn)
+
+	switch ext.BOFExecutor {
+	case BOFExecutorCOFFLoader:
+		if dependsOn == "" {
+			return extensionExecutionNative, fmt.Errorf("BOF command %q selects %q but has no depends_on loader", ext.CommandName, BOFExecutorCOFFLoader)
+		}
+		return extensionExecutionCOFFLoader, nil
+	case "":
+		// Existing manifests infer the loader from depends_on. Keep that route
+		// even when the target supports the built-in executor.
+		if dependsOn != "" {
+			return extensionExecutionCOFFLoader, nil
+		}
+	case BOFExecutorReflektor:
+	default:
+		return extensionExecutionNative, fmt.Errorf("BOF command %q has invalid bof_executor %q", ext.CommandName, ext.BOFExecutor)
+	}
+
+	if capabilities&sliverpb.CapabilityBOFV1 != 0 {
+		return extensionExecutionReflektor, nil
+	}
+	if dependsOn != "" {
+		return extensionExecutionCOFFLoader, nil
+	}
+	return extensionExecutionNative, fmt.Errorf("target does not support built-in Reflektor BOF execution and command %q has no depends_on fallback", ext.CommandName)
+}
+
+func activeTargetCapabilities(session *clientpb.Session, beacon *clientpb.Beacon) uint64 {
+	if session != nil {
+		return session.Capabilities
+	}
+	if beacon != nil {
+		return beacon.Capabilities
+	}
+	return 0
+}
+
+func buildCallExtensionRequest(goos string, goarch string, mode extensionExecutionMode, ext *ExtCommand, binPath string, entryPoint string, extensionArgs []byte) (*sliverpb.CallExtensionReq, error) {
+	extData, err := os.ReadFile(binPath)
+	if err != nil {
+		return nil, err
+	}
+	bd := sha256.Sum256(extData)
+	name := hex.EncodeToString(bd[:])
+
+	if mode == extensionExecutionCOFFLoader {
+		loader, found := loadedExtensions[ext.DependsOn]
+		if !found {
+			return nil, fmt.Errorf("attempted to load non-existing extension: %s", ext.DependsOn)
+		}
+		loaderPath, err := loader.getFileForTarget(goos, goarch)
+		if err != nil {
+			return nil, fmt.Errorf("could not get file for extension %s: %w", ext.DependsOn, err)
+		}
+		loaderData, err := os.ReadFile(loaderPath)
+		if err != nil {
+			return nil, fmt.Errorf("dep read file error: %w", err)
+		}
+		if len(loaderData) == 0 {
+			return nil, fmt.Errorf("read empty file: %s", loaderPath)
+		}
+		bd = sha256.Sum256(loaderData)
+		name = hex.EncodeToString(bd[:])
+	}
+
+	req := &sliverpb.CallExtensionReq{
+		Name:   name,
+		Export: entryPoint,
+		Args:   extensionArgs,
+	}
+	if mode == extensionExecutionReflektor {
+		req.BOFData = extData
+		req.IsBOF = true
+	}
+	return req, nil
+}
+
 func runExtensionCmd(cmd *cobra.Command, con *console.SliverClient, args []string) {
 	// The command runs with DisableFlagParsing, so args is the raw, unstripped
 	// slice. Separate Sliver-owned flags from the extension's own arguments and
@@ -570,27 +666,32 @@ func runExtensionCmd(cmd *cobra.Command, con *console.SliverClient, args []strin
 		return
 	}
 
-	checkCache := session != nil
-	if err = loadExtension(goos, goarch, checkCache, ext, cmd, con); err != nil {
-		con.PrintErrorf("Could not load extension: %s\n", err)
-		return
-	}
-
 	binPath, err := ext.getFileForTarget(goos, goarch)
 	if err != nil {
 		con.PrintErrorf("Failed to read extension file: %s\n", err)
 		return
 	}
 
-	isBOF := filepath.Ext(binPath) == ".o"
+	executionMode, err := planExtensionExecution(ext, binPath, activeTargetCapabilities(session, beacon))
+	if err != nil {
+		con.PrintErrorf("Could not execute extension: %s\n", err)
+		return
+	}
+	if executionMode != extensionExecutionReflektor {
+		checkCache := session != nil
+		if err = loadExtension(goos, goarch, checkCache, ext, cmd, con); err != nil {
+			con.PrintErrorf("Could not load extension: %s\n", err)
+			return
+		}
+	}
 
 	// BOFs (Beacon Object Files) are a specific kind of extensions
-	// that require another extension (a COFF loader) to be present.
+	// that either use the built-in Reflektor executor or another extension.
 	// BOFs also have strongly typed arguments that need to be parsed in the proper way.
-	// This block will pack both the BOF data and its arguments into a single buffer that
-	// the loader will extract and load.
-	if isBOF {
-		// Beacon Object File -- requires a COFF loader
+	switch executionMode {
+	case extensionExecutionCOFFLoader:
+		// Legacy COFF loaders expect the entrypoint, object, and typed argument
+		// buffer packed into the existing outer argument envelope.
 		extensionArgs, err = getBOFArgs(cmd, args, binPath, ext)
 		if err != nil {
 			con.PrintErrorf("BOF args error: %s\n", err)
@@ -598,7 +699,15 @@ func runExtensionCmd(cmd *cobra.Command, con *console.SliverClient, args []strin
 		}
 		extName = ext.DependsOn
 		entryPoint = loadedExtensions[extName].Entrypoint // should exist at this point
-	} else {
+	case extensionExecutionReflektor:
+		extensionArgs, err = ParseFlagArgumentsToBuffer(cmd, args, binPath, ext)
+		if err != nil {
+			con.PrintErrorf("BOF args error: %s\n", err)
+			return
+		}
+		extName = ext.CommandName
+		entryPoint = ext.Entrypoint
+	default:
 		// Regular DLL - Just join the arguments with spaces
 		if len(args) > 0 {
 			extensionArgs = []byte(strings.Join(args, " "))
@@ -612,45 +721,15 @@ func runExtensionCmd(cmd *cobra.Command, con *console.SliverClient, args []strin
 	ctrl := make(chan bool)
 	msg := fmt.Sprintf("Executing %s ...", cmd.Name())
 	con.SpinUntil(msg, ctrl)
-	extdata, err := os.ReadFile(binPath)
+	callExtReq, err := buildCallExtensionRequest(goos, goarch, executionMode, ext, binPath, entryPoint, extensionArgs)
 	if err != nil {
-		con.PrintErrorf("ext read file error: %s\n", err)
+		ctrl <- true
+		<-ctrl
+		con.PrintErrorf("Could not prepare extension call: %s\n", err)
+		return
 	}
-	bd := sha256.Sum256(extdata)
-	name := hex.EncodeToString(bd[:])
-	if isBOF {
-		//if we are using a bof, we are actually calling the coffloader extension - so get the file from dep ref and use that shasum
-
-		if extension, found := loadedExtensions[ext.DependsOn]; found {
-			dep, err := extension.getFileForTarget(goos, goarch)
-			if err != nil {
-				con.PrintErrorf("could not get file for extension %s", ext.DependsOn)
-				return
-			}
-			depdata, err := os.ReadFile(dep)
-			if err != nil {
-				con.PrintErrorf("dep read file error: %s\n", err)
-				return
-			}
-			if len(depdata) == 0 {
-				con.PrintErrorf("read empty file: %s\n", dep)
-				return
-			}
-			bd = sha256.Sum256(depdata)
-			name = hex.EncodeToString(bd[:])
-		} else {
-			// handle error
-			con.PrintErrorf("attempted to load non-existing extension: %s", ext.DependsOn)
-			return
-		}
-
-	}
-	callExtResp, err := con.Rpc.CallExtension(context.Background(), &sliverpb.CallExtensionReq{
-		Name:    name,
-		Export:  entryPoint,
-		Args:    extensionArgs,
-		Request: con.ActiveTarget.Request(cmd),
-	})
+	callExtReq.Request = con.ActiveTarget.Request(cmd)
+	callExtResp, err := con.Rpc.CallExtension(context.Background(), callExtReq)
 	ctrl <- true
 	<-ctrl
 	if err != nil {
@@ -865,37 +944,22 @@ func makeExtensionFlagNameCompletion(extCmd *ExtCommand) carapace.Action {
 }
 
 func makeCommandPlatformFilters(extCmd *ExtCommand) map[string]string {
-	filtersOS := make(map[string]bool)
-	filtersArch := make(map[string]bool)
-
-	var all []string
-
-	// Only add filters for architectures when there OS matters.
+	supportedTargets := make(map[string]struct{}, len(extCmd.Files))
 	for _, file := range extCmd.Files {
-		filtersOS[file.OS] = true
-
-		if filtersOS[file.OS] {
-			filtersArch[file.Arch] = true
-		}
+		supportedTargets[file.OS+"/"+file.Arch] = struct{}{}
 	}
 
-	for os, enabled := range filtersOS {
-		if enabled {
-			all = append(all, os)
+	// Console command filters are hide-on-match, so annotate the command with
+	// every exact target pair it does not support. A separate fallback hides all
+	// native extensions on target pairs outside the supported loader matrix.
+	filters := []string{consts.NativeExtensionUnsupportedTargetFilter}
+	for _, target := range consts.NativeExtensionTargets() {
+		if _, supported := supportedTargets[target.GOOS+"/"+target.GOARCH]; !supported {
+			filters = append(filters, target.Filter)
 		}
 	}
 
-	for arch, enabled := range filtersArch {
-		if enabled {
-			all = append(all, arch)
-		}
-	}
-
-	if len(all) == 0 {
-		return map[string]string{}
-	}
-
 	return map[string]string{
-		appConsole.CommandFilterKey: strings.Join(all, ","),
+		appConsole.CommandFilterKey: strings.Join(filters, ","),
 	}
 }

client/command/extensions/remove.go

@@ -23,7 +23,6 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
-	"strings"
 
 	"github.com/bishopfox/sliver/client/assets"
 	"github.com/bishopfox/sliver/client/console"
@@ -100,21 +99,11 @@ func RemoveExtensionByManifestName(manifestName string, con *console.SliverClien
 			return true, nil
 		}
 
-		// If path is outside extensions directory, prompt for confirmation
-		if !strings.HasPrefix(extPath, assets.GetExtensionsDir()) {
-			confirm := false
-			_ = forms.Confirm(fmt.Sprintf("Remove '%s' extension directory from filesystem?", manifestName), &confirm)
-			if !confirm {
-				// Skip the forceRemoveAll but continue with the rest
-				delete(loadedManifests, manifestName)
-				for _, cmd := range man.ExtCommand {
-					delete(loadedExtensions, cmd.CommandName)
-				}
-				return true, nil
-			}
+		// Only installed extensions are owned by Sliver and may be deleted.
+		// Temporarily loaded extensions can live in arbitrary source directories.
+		if isWithinExtensionsDir(extPath) {
+			forceRemoveAll(extPath)
 		}
-
-		forceRemoveAll(extPath)
 		delete(loadedManifests, manifestName)
 		for _, cmd := range man.ExtCommand {
 			delete(loadedExtensions, cmd.CommandName)
@@ -124,6 +113,14 @@ func RemoveExtensionByManifestName(manifestName string, con *console.SliverClien
 	return false, nil
 }
 
+func isWithinExtensionsDir(extPath string) bool {
+	relPath, err := filepath.Rel(assets.GetExtensionsDir(), extPath)
+	if err != nil {
+		return false
+	}
+	return relPath != "." && filepath.IsLocal(relPath)
+}
+
 func forceRemoveAll(rootPath string) {
 	util.ChmodR(rootPath, 0o600, 0o700)
 	os.RemoveAll(rootPath)

client/command/generate/generate.go

@@ -87,6 +87,7 @@ var (
 		"linux/arm64":   true,
 		"windows/386":   true,
 		"windows/amd64": true,
+		"windows/arm64": true,
 	}
 
 	ErrNoExternalBuilder = errors.New("no external builders are available")

client/command/help/long-help.go

@@ -59,6 +59,7 @@ var (
 		consts.AIStr:          aiHelp,
 		consts.AIConfigStr:    aiConfigHelp,
 		consts.DocsStr:        docsHelp,
+		consts.OpforStr:       opforHelp,
 		consts.CatStr:         catHelp,
 		consts.EditStr:        editHelp,
 		consts.HexEditStr:     hexEditHelp,
@@ -178,6 +179,32 @@ _=/usr/bin/env
 	ai
 `
 
+	opforHelp = `[[.Bold]]Command:[[.Normal]] opfor [script.cna|subcommand]
+
+[[.Bold]]About:[[.Normal]] Check, run, or persistently load OPFOR-compatible CNA scripts in the Sliver client. Loaded Beacon aliases are exposed beneath the opfor namespace and use the active session or beacon. This integration intentionally focuses on BOF-oriented scripts and a small set of terminal UI and session APIs; it is not a complete Aggressor Script client implementation.
+
+[[.Bold]]Modes:[[.Normal]]
+	check compiles a CNA without executing any top-level code.
+	run executes top-level code once with trailing arguments in @ARGV, then discards aliases, hooks, and callbacks.
+	load executes top-level initialization and retains aliases, hooks, and callbacks for the lifetime of this client process. A bare CNA path is shorthand for load.
+	help displays beacon_command_register metadata for a loaded alias without invoking it.
+
+Most BOF CNAs, including FirefoxDump, define an alias at top level. Running such a file only creates and immediately retires that alias; load it, select a target, and invoke the alias to execute its BOF.
+
+The default operation timeout is 600 seconds. Put --timeout before the alias name so the host consumes it rather than passing it to the CNA command.
+
+[[.Bold]]Examples:[[.Normal]]
+	opfor check ./script.cna
+	opfor run ./script.cna argument
+	opfor load ./firefoxdump.cna
+	opfor help firefoxdump
+	use <session-or-beacon>
+	opfor firefoxdump /all
+	opfor --timeout 900 firefoxdump /all
+	opfor list
+	opfor unload firefoxdump.cna
+`
+
 	aiConfigHelp = `[[.Bold]]Command:[[.Normal]] ai-config
 [[.Bold]]About:[[.Normal]] Open a server-side form to update the AI block in server.yaml. The form stores the default provider, model, thinking level, and provider-specific credentials such as the API key and optional base URL.
 

client/command/mcp/commands.go

@@ -38,6 +38,7 @@ func Commands(con *console.SliverClient) []*cobra.Command {
 		f.String("listen", defaultConfig.ListenAddress, "listen address for the MCP server")
 		f.String("name", defaultConfig.ServerName, "server name for MCP initialize")
 		f.String("version", defaultConfig.ServerVersion, "server version for MCP initialize")
+		f.BoolP("yes", "y", false, "skip the prompt-injection confirmation (broken or non-interactive terminals)")
 	})
 	flags.BindFlagCompletions(startCmd, func(comp *carapace.ActionMap) {
 		(*comp)["transport"] = carapace.ActionValues("http", "sse")

client/command/mcp/mcp.go

@@ -32,6 +32,9 @@ func McpCmd(cmd *cobra.Command, con *console.SliverClient, args []string) {
 	if status.AuthToken != "" {
 		con.Printf("Auth Token: %s\n", status.AuthToken)
 	}
+	if status.AuthConfigPath != "" {
+		con.Printf("Auth Config: %s\n", status.AuthConfigPath)
+	}
 
 	if status.Running && !status.StartedAt.IsZero() {
 		uptime := time.Since(status.StartedAt).Truncate(time.Second)

client/command/mcp/start.go

@@ -28,8 +28,10 @@ func McpStartCmd(cmd *cobra.Command, con *console.SliverClient, args []string) {
 	}.WithDefaults()
 
 	msg := `Do you know what prompt injection is and are you an adult?`
-	if !settings.IsUserAnAdultWithPrompt(con, msg) {
+	skipConfirm, _ := cmd.Flags().GetBool("yes")
+	if !skipConfirm && !settings.IsUserAnAdultWithPrompt(con, msg) {
 		con.PrintErrorf("Failed to start MCP server, the user is not qualified to use feature\n")
+		con.PrintInfof("Use --yes to skip the confirmation prompt, or toggle it with 'settings autoadult'\n")
 		return
 	}
 
@@ -50,4 +52,7 @@ func McpStartCmd(cmd *cobra.Command, con *console.SliverClient, args []string) {
 	if status.AuthToken != "" {
 		con.PrintInfof("Auth Token: %s\n", status.AuthToken)
 	}
+	if status.AuthConfigPath != "" {
+		con.PrintInfof("Auth Config: %s\n", status.AuthConfigPath)
+	}
 }

client/command/opfor/commands.go

@@ -0,0 +1,516 @@
+//go:build client
+
+// Package opfor integrates OPFOR-compatible CNA scripting with the Sliver client.
+package opfor
+
+import (
+	"context"
+	"fmt"
+	"math"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/bishopfox/sliver/client/command/help"
+	"github.com/bishopfox/sliver/client/console"
+	consts "github.com/bishopfox/sliver/client/constants"
+	opforengine "github.com/sliverarmory/opfor"
+	"github.com/spf13/cobra"
+)
+
+const aliasInvocationTimeout = 10 * time.Minute
+
+// Commands returns the OPFOR script manager for the implant menu.
+func Commands(client *console.SliverClient) []*cobra.Command {
+	return []*cobra.Command{managementCommand(client, consts.SliverCoreHelpGroup)}
+}
+
+// ServerCommands returns the same persistent script manager in the server
+// menu. CNA Beacon aliases themselves are registered only on implant roots.
+func ServerCommands(client *console.SliverClient) []*cobra.Command {
+	return []*cobra.Command{managementCommand(client, consts.GenericHelpGroup)}
+}
+
+func managementCommand(client *console.SliverClient, groupID string) *cobra.Command {
+	command := &cobra.Command{
+		Use:     consts.OpforStr + " [script.cna]",
+		Short:   "Load and manage OPFOR CNA scripts",
+		Long:    help.GetHelpFor([]string{consts.OpforStr}),
+		GroupID: groupID,
+		Args:    cobra.ArbitraryArgs,
+		RunE: func(command *cobra.Command, args []string) error {
+			return runManagementCommand(command, client, args)
+		},
+	}
+	command.PersistentFlags().Int64P(
+		"timeout",
+		"t",
+		int64(aliasInvocationTimeout/time.Second),
+		"OPFOR operation timeout in seconds (place before a dynamic alias name)",
+	)
+	// The first non-flag token is a CNA alias (or convenience script path).
+	// Everything after it belongs to the script, including flag-like tokens.
+	command.Flags().SetInterspersed(false)
+
+	load := &cobra.Command{
+		Use:   "load <script.cna>",
+		Short: "Execute and retain a CNA's aliases, hooks, and callbacks",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(command *cobra.Command, args []string) error {
+			return loadScriptCommand(command, client, args[0])
+		},
+	}
+	run := &cobra.Command{
+		Use:   "run <script.cna> [arguments...]",
+		Short: "Execute a CNA once and discard its registrations",
+		Args:  cobra.MinimumNArgs(1),
+		RunE: func(command *cobra.Command, args []string) error {
+			return runScriptCommand(command, client, args[0], args[1:])
+		},
+	}
+	// Tokens after the script path belong to @ARGV, including flag-like ones.
+	run.Flags().SetInterspersed(false)
+	check := &cobra.Command{
+		Use:   "check <script.cna>",
+		Short: "Compile a CNA without executing it",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(command *cobra.Command, args []string) error {
+			return checkScriptCommand(command, client, args[0])
+		},
+	}
+	aliasHelp := &cobra.Command{
+		Use:   "help <alias>",
+		Short: "Show help registered for a loaded CNA alias",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(command *cobra.Command, args []string) error {
+			return helpAliasCommand(command, client, args[0])
+		},
+	}
+	unload := &cobra.Command{
+		Use:   "unload <script.cna>",
+		Short: "Unload a CNA script and retire its aliases",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(command *cobra.Command, args []string) error {
+			return unloadScriptCommand(command, client, args[0])
+		},
+	}
+	list := &cobra.Command{
+		Use:   "list",
+		Short: "List loaded CNA scripts by absolute path",
+		Args:  cobra.NoArgs,
+		RunE: func(command *cobra.Command, _ []string) error {
+			return listScriptsCommand(command, client)
+		},
+	}
+	command.AddCommand(check, aliasHelp, load, unload, list, run)
+	return command
+}
+
+func runManagementCommand(command *cobra.Command, client *console.SliverClient, args []string) error {
+	if _, err := configuredCommandTimeout(command); err != nil {
+		return err
+	}
+	if len(args) == 0 {
+		return command.Help()
+	}
+	if len(args) == 1 && strings.EqualFold(filepath.Ext(args[0]), ".cna") {
+		return loadScriptCommand(command, client, args[0])
+	}
+
+	manager, err := managerFor(client)
+	if err != nil {
+		return err
+	}
+	if manager.hasAlias(args[0]) {
+		return manager.runAlias(command, args[0], args[1:])
+	}
+	return fmt.Errorf("opfor: unknown CNA alias %q", args[0])
+}
+
+func loadScriptCommand(command *cobra.Command, client *console.SliverClient, path string) error {
+	manager, err := managerFor(client)
+	if err != nil {
+		return err
+	}
+	previousAliases := manager.aliasBindingCounts()
+	ctx, cancel, err := commandTimeoutContext(command)
+	if err != nil {
+		return err
+	}
+	defer cancel()
+	absolute, err := manager.Load(ctx, path)
+	if err != nil {
+		return err
+	}
+	manager.output.PrintSuccessf("Loaded CNA script %s\n", absolute)
+	currentAliases := manager.aliasBindingCounts()
+	aliases := make([]string, 0)
+	for _, alias := range manager.aliasNames() {
+		if currentAliases[alias] > previousAliases[alias] && !reservedManagementAlias(alias) {
+			aliases = append(aliases, alias)
+		}
+	}
+	if len(aliases) == 0 {
+		manager.output.PrintInfof("The script is retained for this client process; it registered no invokable Beacon aliases\n")
+		return nil
+	}
+	manager.output.PrintInfof("Registered CNA aliases:\n")
+	for _, alias := range aliases {
+		manager.output.Printf("  opfor %s\n", alias)
+	}
+	manager.output.PrintInfof("View CNA alias help:\n")
+	for _, alias := range aliases {
+		manager.output.Printf("  opfor help %s\n", alias)
+	}
+	return nil
+}
+
+func reservedManagementAlias(name string) bool {
+	switch name {
+	case "check", "help", "list", "load", "run", "unload":
+		return true
+	default:
+		return false
+	}
+}
+
+func runScriptCommand(command *cobra.Command, client *console.SliverClient, path string, arguments []string) error {
+	manager, err := managerFor(client)
+	if err != nil {
+		return err
+	}
+	ctx, cancel, err := commandTimeoutContext(command)
+	if err != nil {
+		return err
+	}
+	defer cancel()
+	_, err = manager.Run(ctx, path, arguments)
+	return err
+}
+
+func checkScriptCommand(command *cobra.Command, client *console.SliverClient, path string) error {
+	if _, err := configuredCommandTimeout(command); err != nil {
+		return err
+	}
+	manager, err := managerFor(client)
+	if err != nil {
+		return err
+	}
+	if _, err := manager.Check(path); err != nil {
+		return err
+	}
+	manager.output.Printf("%s: ok\n", path)
+	return nil
+}
+
+func helpAliasCommand(command *cobra.Command, client *console.SliverClient, name string) error {
+	if _, err := configuredCommandTimeout(command); err != nil {
+		return err
+	}
+	manager, err := managerFor(client)
+	if err != nil {
+		return err
+	}
+	metadata, err := manager.aliasMetadata(name)
+	if err != nil {
+		return err
+	}
+	description := strings.TrimSpace(metadata.Description)
+	if description == "" {
+		description = "CNA-defined Beacon alias"
+	}
+	manager.output.Printf("Command: opfor %s [arguments...]\n\n%s\n", name, description)
+	if detail := strings.TrimSpace(metadata.Detail); detail != "" {
+		manager.output.Printf("\n%s\n", detail)
+	}
+	return nil
+}
+
+func unloadScriptCommand(command *cobra.Command, client *console.SliverClient, path string) error {
+	manager, err := managerFor(client)
+	if err != nil {
+		return err
+	}
+	ctx, cancel, err := commandTimeoutContext(command)
+	if err != nil {
+		return err
+	}
+	defer cancel()
+	absolute, err := manager.Unload(ctx, path)
+	if err != nil {
+		return err
+	}
+	manager.output.PrintSuccessf("Unloaded CNA script %s\n", absolute)
+	return nil
+}
+
+func listScriptsCommand(command *cobra.Command, client *console.SliverClient) error {
+	if _, err := configuredCommandTimeout(command); err != nil {
+		return err
+	}
+	manager, err := managerFor(client)
+	if err != nil {
+		return err
+	}
+	paths := manager.Paths()
+	if len(paths) == 0 {
+		manager.output.PrintInfof("No CNA scripts are loaded\n")
+		return nil
+	}
+	manager.output.PrintInfof("Loaded CNA scripts:\n")
+	for _, path := range paths {
+		manager.output.Printf("  %s\n", path)
+	}
+	return nil
+}
+
+// RegisterCommands rehydrates the active CNA Beacon aliases beneath the
+// implant menu's opfor namespace. Keeping script declarations namespaced avoids
+// collisions with built-ins such as Sliver's own cat command.
+func RegisterCommands(root *cobra.Command, client *console.SliverClient) {
+	if root == nil || client == nil {
+		return
+	}
+	manager, err := managerFor(client)
+	if err != nil {
+		client.PrintErrorf("%s\n", err)
+		return
+	}
+	namespace := directChild(root, consts.OpforStr)
+	if namespace == nil {
+		return
+	}
+	manager.commandMu.Lock()
+	manager.mu.Lock()
+	for previous := range manager.roots {
+		if previous == namespace {
+			continue
+		}
+		// A replaced menu root may still be executing asynchronously. Stop
+		// retaining it, but leave its Cobra tree intact for that execution.
+		delete(manager.roots, previous)
+	}
+	if manager.roots[namespace] == nil {
+		manager.roots[namespace] = make(map[string]*cobra.Command)
+	}
+	manager.mu.Unlock()
+	manager.syncRootLocked(namespace)
+	manager.commandMu.Unlock()
+}
+
+func (manager *Manager) syncAllRoots() {
+	manager.commandMu.Lock()
+	defer manager.commandMu.Unlock()
+
+	manager.mu.RLock()
+	roots := make([]*cobra.Command, 0, len(manager.roots))
+	for root := range manager.roots {
+		roots = append(roots, root)
+	}
+	manager.mu.RUnlock()
+	for _, root := range roots {
+		manager.syncRootLocked(root)
+	}
+}
+
+func (manager *Manager) syncRootLocked(root *cobra.Command) {
+	names := manager.aliasNames()
+	wanted := make(map[string]struct{}, len(names))
+	for _, name := range names {
+		wanted[name] = struct{}{}
+	}
+
+	catalog, _ := manager.runtime.SnapshotAggressorCommandCatalog(opforengine.AggressorCommandBeacon)
+	help := make(map[string]opforengine.AggressorCommandMetadata, len(catalog.Commands))
+	for _, metadata := range catalog.Commands {
+		help[metadata.Name] = metadata
+	}
+
+	manager.mu.Lock()
+	attached := manager.roots[root]
+	if attached == nil {
+		attached = map[string]*cobra.Command{}
+		manager.roots[root] = attached
+	}
+	for name, command := range attached {
+		if _, keep := wanted[name]; keep {
+			continue
+		}
+		root.RemoveCommand(command)
+		delete(attached, name)
+	}
+	manager.mu.Unlock()
+
+	for _, name := range names {
+		metadata := help[name]
+		manager.mu.RLock()
+		existing := attached[name]
+		manager.mu.RUnlock()
+		if existing != nil {
+			applyAliasHelp(existing, metadata)
+			continue
+		}
+		if directChild(root, name) != nil {
+			// A built-in/Armory command wins over an untrusted script declaration.
+			continue
+		}
+
+		aliasName := name
+		command := &cobra.Command{
+			Use:                aliasName + " [arguments...]",
+			DisableFlagParsing: true,
+			RunE: func(command *cobra.Command, args []string) error {
+				return manager.runAlias(command, aliasName, args)
+			},
+		}
+		applyAliasHelp(command, metadata)
+		root.AddCommand(command)
+		manager.mu.Lock()
+		attached[aliasName] = command
+		manager.mu.Unlock()
+	}
+}
+
+func directChild(root *cobra.Command, name string) *cobra.Command {
+	for _, child := range root.Commands() {
+		if child.Name() == name {
+			return child
+		}
+	}
+	return nil
+}
+
+func applyAliasHelp(command *cobra.Command, metadata opforengine.AggressorCommandMetadata) {
+	command.Short = metadata.Description
+	if command.Short == "" {
+		command.Short = "CNA-defined Beacon alias"
+	}
+	command.Long = strings.TrimSpace(strings.Join([]string{metadata.Description, metadata.Detail}, "\n\n"))
+	if command.Long == "" {
+		command.Long = command.Short
+	}
+}
+
+func (manager *Manager) runAlias(command *cobra.Command, name string, args []string) error {
+	args, timeoutOverride, err := consumeAliasHostArguments(args)
+	if err != nil {
+		return err
+	}
+	ctx, cancel, err := commandTimeoutContextWithOverride(command, timeoutOverride)
+	if err != nil {
+		return err
+	}
+	defer cancel()
+	session, beacon := manager.client.ActiveTarget.GetInteractive()
+	if session == nil && beacon == nil {
+		return errorsNewTargetRequired(name)
+	}
+	targetID := ""
+	if session != nil {
+		targetID = session.ID
+	} else {
+		targetID = beacon.ID
+	}
+
+	rawInput := name
+	if len(args) != 0 {
+		rawInput += " " + strings.Join(args, " ")
+	}
+	if err := manager.invokeAlias(ctx, name, rawInput, args, targetID); err != nil {
+		return fmt.Errorf("OPFOR alias %s failed: %w", name, err)
+	}
+	return nil
+}
+
+func consumeAliasHostArguments(args []string) ([]string, time.Duration, error) {
+	remaining := args
+	var timeout time.Duration
+	for len(remaining) != 0 {
+		var value string
+		switch argument := remaining[0]; {
+		case argument == "--":
+			return remaining[1:], timeout, nil
+		case argument == "--timeout" || argument == "-t":
+			if len(remaining) < 2 {
+				return nil, 0, fmt.Errorf("opfor: %s requires a timeout in seconds", argument)
+			}
+			value = remaining[1]
+			remaining = remaining[2:]
+		case strings.HasPrefix(argument, "--timeout="):
+			value = strings.TrimPrefix(argument, "--timeout=")
+			remaining = remaining[1:]
+		case strings.HasPrefix(argument, "-t="):
+			value = strings.TrimPrefix(argument, "-t=")
+			remaining = remaining[1:]
+		default:
+			return remaining, timeout, nil
+		}
+
+		parsed, err := parseAliasTimeout(value)
+		if err != nil {
+			return nil, 0, err
+		}
+		timeout = parsed
+	}
+	return remaining, timeout, nil
+}
+
+func parseAliasTimeout(value string) (time.Duration, error) {
+	seconds, err := strconv.ParseInt(value, 10, 64)
+	if err != nil || seconds <= 0 || seconds > math.MaxInt64/int64(time.Second) {
+		return 0, fmt.Errorf("opfor: invalid timeout %q; expected positive seconds", value)
+	}
+	return time.Duration(seconds) * time.Second, nil
+}
+
+func (manager *Manager) invokeAlias(ctx context.Context, name, rawInput string, arguments []string, targetID string) error {
+	if targetID == "" {
+		return errorsNewTargetRequired(name)
+	}
+	parsedArguments := make([]string, len(arguments))
+	copy(parsedArguments, arguments)
+	_, err := manager.runtime.InvokeConsole(ctx, opforengine.ConsoleInvocation{
+		Kind:            opforengine.BindingAlias,
+		Name:            name,
+		RawInput:        rawInput,
+		ParsedArguments: parsedArguments,
+		SessionID:       opforengine.String(targetID),
+	})
+	return err
+}
+
+func errorsNewTargetRequired(name string) error {
+	return fmt.Errorf("opfor: alias %q requires an active target", name)
+}
+
+func commandTimeoutContext(command *cobra.Command) (context.Context, context.CancelFunc, error) {
+	return commandTimeoutContextWithOverride(command, 0)
+}
+
+func commandTimeoutContextWithOverride(command *cobra.Command, override time.Duration) (context.Context, context.CancelFunc, error) {
+	parent := context.Background()
+	if command != nil && command.Context() != nil {
+		parent = command.Context()
+	}
+	timeout, err := configuredCommandTimeout(command)
+	if err != nil {
+		return nil, nil, err
+	}
+	if override > 0 {
+		timeout = override
+	}
+	ctx, cancel := context.WithTimeout(parent, timeout)
+	return ctx, cancel, nil
+}
+
+func configuredCommandTimeout(command *cobra.Command) (time.Duration, error) {
+	if command == nil {
+		return aliasInvocationTimeout, nil
+	}
+	flag := command.Flag("timeout")
+	if flag == nil {
+		return aliasInvocationTimeout, nil
+	}
+	return parseAliasTimeout(flag.Value.String())
+}

client/command/opfor/commands_stub.go

@@ -0,0 +1,17 @@
+//go:build !client
+
+package opfor
+
+import (
+	"github.com/bishopfox/sliver/client/console"
+	"github.com/spf13/cobra"
+)
+
+// Commands is unavailable in builds which do not include the client tag.
+func Commands(_ *console.SliverClient) []*cobra.Command { return nil }
+
+// ServerCommands is unavailable in builds which do not include the client tag.
+func ServerCommands(_ *console.SliverClient) []*cobra.Command { return nil }
+
+// RegisterCommands is a no-op outside client builds.
+func RegisterCommands(_ *cobra.Command, _ *console.SliverClient) {}

client/command/opfor/corpus_test.go

@@ -0,0 +1,260 @@
+//go:build client
+
+package opfor
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"testing"
+
+	"github.com/bishopfox/sliver/client/console"
+	"github.com/bishopfox/sliver/protobuf/clientpb"
+	"github.com/bishopfox/sliver/protobuf/commonpb"
+	"github.com/bishopfox/sliver/protobuf/rpcpb"
+	"github.com/bishopfox/sliver/protobuf/sliverpb"
+	"google.golang.org/grpc"
+	"google.golang.org/protobuf/proto"
+)
+
+type corpusRPC struct {
+	rpcpb.SliverRPCClient
+
+	mu       sync.Mutex
+	sessions []*clientpb.Session
+	calls    []*sliverpb.CallExtensionReq
+}
+
+func (rpc *corpusRPC) GetSessions(context.Context, *commonpb.Empty, ...grpc.CallOption) (*clientpb.Sessions, error) {
+	return &clientpb.Sessions{Sessions: rpc.sessions}, nil
+}
+
+func (*corpusRPC) GetBeacons(context.Context, *commonpb.Empty, ...grpc.CallOption) (*clientpb.Beacons, error) {
+	return &clientpb.Beacons{}, nil
+}
+
+func (*corpusRPC) GetBeaconTaskContent(context.Context, *clientpb.BeaconTask, ...grpc.CallOption) (*clientpb.BeaconTask, error) {
+	return nil, fmt.Errorf("unexpected beacon task poll in session corpus test")
+}
+
+func (rpc *corpusRPC) CallExtension(_ context.Context, request *sliverpb.CallExtensionReq, _ ...grpc.CallOption) (*sliverpb.CallExtension, error) {
+	rpc.mu.Lock()
+	rpc.calls = append(rpc.calls, proto.Clone(request).(*sliverpb.CallExtensionReq))
+	rpc.mu.Unlock()
+	return &sliverpb.CallExtension{Response: &commonpb.Response{}}, nil
+}
+
+func (rpc *corpusRPC) snapshotCalls() []*sliverpb.CallExtensionReq {
+	rpc.mu.Lock()
+	defer rpc.mu.Unlock()
+	return append([]*sliverpb.CallExtensionReq(nil), rpc.calls...)
+}
+
+type corpusPromptUI struct{}
+
+func (corpusPromptUI) Confirm(_ string, defaultValue bool) (bool, error) {
+	return defaultValue, nil
+}
+
+func (corpusPromptUI) Input(_ string, defaultValue string) (string, error) {
+	return defaultValue, nil
+}
+
+type corpusOutput struct{}
+
+func (corpusOutput) Printf(string, ...any)        {}
+func (corpusOutput) PrintInfof(string, ...any)    {}
+func (corpusOutput) PrintSuccessf(string, ...any) {}
+func (corpusOutput) PrintErrorf(string, ...any)   {}
+
+func newCorpusManager(t *testing.T, rpc rpcpb.SliverRPCClient) *Manager {
+	t.Helper()
+
+	client := console.NewConsole(false)
+	client.Rpc = rpc
+	manager, err := newManagerWithOutput(client, corpusPromptUI{}, corpusOutput{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		_ = manager.runtime.Close(context.Background())
+	})
+	return manager
+}
+
+func materializeCorpusScript(t *testing.T, fixture, scriptName, objectPath string, object []byte) string {
+	t.Helper()
+
+	source, err := os.ReadFile(filepath.Join("testdata", "corpus", filepath.FromSlash(fixture)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	root := t.TempDir()
+	scriptPath := filepath.Join(root, scriptName)
+	if err := os.WriteFile(scriptPath, source, 0o600); err != nil {
+		t.Fatal(err)
+	}
+	resourcePath := filepath.Join(root, filepath.FromSlash(objectPath))
+	if err := os.MkdirAll(filepath.Dir(resourcePath), 0o700); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(resourcePath, object, 0o600); err != nil {
+		t.Fatal(err)
+	}
+	return scriptPath
+}
+
+func expectedStringArguments(value string) []byte {
+	payload := make([]byte, 4+len(value)+1)
+	payload[0] = byte(len(value) + 1)
+	payload[1] = byte((len(value) + 1) >> 8)
+	payload[2] = byte((len(value) + 1) >> 16)
+	payload[3] = byte((len(value) + 1) >> 24)
+	copy(payload[4:], value)
+	arguments := make([]byte, 4+len(payload))
+	arguments[0] = byte(len(payload))
+	arguments[1] = byte(len(payload) >> 8)
+	arguments[2] = byte(len(payload) >> 16)
+	arguments[3] = byte(len(payload) >> 24)
+	copy(arguments[4:], payload)
+	return arguments
+}
+
+type corpusDispatchTest struct {
+	name          string
+	fixture       string
+	scriptName    string
+	objectPath    string
+	alias         string
+	arguments     []string
+	packedString  *string
+	objectContent []byte
+}
+
+func TestSliverArmoryCNACorpusDispatchesBOFs(t *testing.T) {
+	tests := []corpusDispatchTest{
+		{
+			name:          "FirefoxDump all",
+			fixture:       "firefoxdump/firefoxdump.cna",
+			scriptName:    "firefoxdump.cna",
+			objectPath:    "bin/firefoxdump.x64.o",
+			alias:         "firefoxdump",
+			arguments:     []string{"/all"},
+			packedString:  stringPointer("/all"),
+			objectContent: []byte("firefoxdump-x64-object"),
+		},
+		{
+			name:          "bof_collection cat path with spaces",
+			fixture:       "bof_collection/cat.cna",
+			scriptName:    "cat.cna",
+			objectPath:    "dist/cat.x64.o",
+			alias:         "cat",
+			arguments:     []string{`C:\Program`, `Files\notes.txt`},
+			packedString:  stringPointer(`C:\Program Files\notes.txt`),
+			objectContent: []byte("cat-x64-object"),
+		},
+		{
+			name:          "OperatorsKit FindDotnet no arguments",
+			fixture:       "operatorskit/finddotnet.cna",
+			scriptName:    "finddotnet.cna",
+			objectPath:    "finddotnet.o",
+			alias:         "finddotnet",
+			objectContent: []byte("finddotnet-x64-object"),
+		},
+		{
+			name:          "OperatorsKit FindSysmon registry",
+			fixture:       "operatorskit/findsysmon.cna",
+			scriptName:    "findsysmon.cna",
+			objectPath:    "findsysmon.o",
+			alias:         "findsysmon",
+			arguments:     []string{"reg"},
+			packedString:  stringPointer("reg"),
+			objectContent: []byte("findsysmon-x64-object"),
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) { runCorpusDispatchTest(t, test) })
+	}
+}
+
+func runCorpusDispatchTest(t *testing.T, test corpusDispatchTest) {
+	t.Helper()
+	session := &clientpb.Session{
+		ID:           "session-corpus",
+		Name:         "corpus",
+		OS:           "windows",
+		Arch:         "amd64",
+		Capabilities: sliverpb.CapabilityBOFV1,
+	}
+	rpc := &corpusRPC{sessions: []*clientpb.Session{session}}
+	manager := newCorpusManager(t, rpc)
+	scriptPath := materializeCorpusScript(
+		t, test.fixture, test.scriptName, test.objectPath, test.objectContent,
+	)
+
+	loadedPath, err := manager.Load(context.Background(), scriptPath)
+	if err != nil {
+		t.Fatalf("load pinned %s fixture: %v", test.fixture, err)
+	}
+	if loadedPath != scriptPath {
+		t.Fatalf("loaded path = %q, want %q", loadedPath, scriptPath)
+	}
+	assertCorpusAliases(t, manager.aliasNames(), test.alias)
+
+	rawInput := strings.Join(append([]string{test.alias}, test.arguments...), " ")
+	if err := manager.invokeAlias(context.Background(), test.alias, rawInput, test.arguments, session.ID); err != nil {
+		t.Fatalf("invoke %s: %v", test.alias, err)
+	}
+
+	calls := rpc.snapshotCalls()
+	if len(calls) != 1 {
+		t.Fatalf("CallExtension calls = %d, want 1", len(calls))
+	}
+	assertCorpusCall(t, calls[0], test, session.ID)
+
+	if _, err := manager.Unload(context.Background(), scriptPath); err != nil {
+		t.Fatalf("unload %s: %v", test.alias, err)
+	}
+	if names := manager.aliasNames(); len(names) != 0 {
+		t.Fatalf("aliases after unload = %v, want none", names)
+	}
+}
+
+func assertCorpusAliases(t *testing.T, names []string, want string) {
+	t.Helper()
+	if len(names) != 1 || names[0] != want {
+		t.Fatalf("registered aliases = %v, want [%s]", names, want)
+	}
+}
+
+func assertCorpusCall(t *testing.T, call *sliverpb.CallExtensionReq, test corpusDispatchTest, sessionID string) {
+	t.Helper()
+	if !call.IsBOF || call.Export != "go" {
+		t.Fatalf("CallExtension BOF/export = %v/%q, want true/go", call.IsBOF, call.Export)
+	}
+	if !bytes.Equal(call.BOFData, test.objectContent) {
+		t.Fatalf("CallExtension BOF bytes = %q, want %q", call.BOFData, test.objectContent)
+	}
+	wantArguments := []byte{0, 0, 0, 0}
+	if test.packedString != nil {
+		wantArguments = expectedStringArguments(*test.packedString)
+	}
+	if !bytes.Equal(call.Args, wantArguments) {
+		t.Fatalf("CallExtension args = %x, want Reflektor framing %x", call.Args, wantArguments)
+	}
+	if call.GetRequest().GetSessionID() != sessionID || call.GetRequest().GetAsync() {
+		t.Fatalf("CallExtension request = %#v, want synchronous session %s", call.GetRequest(), sessionID)
+	}
+	if len(call.Name) != 64 {
+		t.Fatalf("CallExtension name digest length = %d, want 64", len(call.Name))
+	}
+}
+
+func stringPointer(value string) *string {
+	return &value
+}

client/command/opfor/manager.go

@@ -0,0 +1,416 @@
+//go:build client
+
+package opfor
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/bishopfox/sliver/client/console"
+	opforengine "github.com/sliverarmory/opfor"
+	"github.com/spf13/cobra"
+)
+
+// Manager owns one long-lived OPFOR runtime for a Sliver client. Keeping the
+// runtime alive is important: CNA aliases, hooks, and callbacks are scoped to
+// the Script returned by Runtime.Load.
+type Manager struct {
+	client *console.SliverClient
+	output clientOutput
+
+	runtime *opforengine.Runtime
+	ui      promptUI
+
+	loadMu    sync.Mutex
+	commandMu sync.Mutex
+	promptMu  sync.Mutex
+	mu        sync.RWMutex
+	scripts   map[string]*opforengine.Script
+	aliases   map[string][]opforengine.Binding
+	roots     map[*cobra.Command]map[string]*cobra.Command
+}
+
+type managerEntry struct {
+	manager *Manager
+	err     error
+}
+
+const oneShotRuntimeCloseTimeout = 5 * time.Second
+
+var (
+	clientManagersMu sync.Mutex
+	clientManagers   = map[*console.SliverClient]managerEntry{}
+)
+
+func managerFor(client *console.SliverClient) (*Manager, error) {
+	if client == nil {
+		return nil, errors.New("opfor: Sliver client is nil")
+	}
+
+	clientManagersMu.Lock()
+	defer clientManagersMu.Unlock()
+	if entry, found := clientManagers[client]; found {
+		return entry.manager, entry.err
+	}
+
+	manager, err := newManager(client, formsPromptUI{})
+	clientManagers[client] = managerEntry{manager: manager, err: err}
+	return manager, err
+}
+
+func newManager(client *console.SliverClient, ui promptUI) (*Manager, error) {
+	return newManagerWithOutput(client, ui, client)
+}
+
+func newManagerWithOutput(client *console.SliverClient, ui promptUI, output clientOutput) (*Manager, error) {
+	if client == nil {
+		return nil, errors.New("opfor: Sliver client is nil")
+	}
+	if ui == nil {
+		return nil, errors.New("opfor: prompt UI is nil")
+	}
+	if output == nil {
+		return nil, errors.New("opfor: output sink is nil")
+	}
+
+	manager := &Manager{
+		client:  client,
+		output:  output,
+		ui:      ui,
+		scripts: map[string]*opforengine.Script{},
+		aliases: map[string][]opforengine.Binding{},
+		roots:   map[*cobra.Command]map[string]*cobra.Command{},
+	}
+
+	runtime, err := manager.newRuntime(true)
+	if err != nil {
+		return nil, fmt.Errorf("opfor: create runtime: %w", err)
+	}
+	manager.runtime = runtime
+	return manager, nil
+}
+
+func (manager *Manager) newRuntime(observeBindings bool) (*opforengine.Runtime, error) {
+	stdout := clientWriter{output: manager.output}
+	stderr := clientWriter{output: manager.output, stderr: true}
+	options := []opforengine.Option{
+		opforengine.WithBOFPackByteOrder(opforengine.BOFPackLittleEndian),
+		opforengine.WithAggressorBeaconExecutionProvider(
+			opforengine.AggressorBeaconExecutionProviderFunc(manager.executeBeacon),
+		),
+		opforengine.WithAggressorSessionQueryProvider(
+			opforengine.AggressorSessionQueryProviderFunc(manager.querySession),
+		),
+		opforengine.WithAggressorBeaconTranscriptSink(
+			opforengine.AggressorBeaconTranscriptSinkFunc(manager.publishTranscript),
+		),
+		opforengine.WithAggressorPromptProvider(
+			opforengine.AggressorPromptProviderFunc(manager.presentPrompt),
+		),
+		opforengine.WithStdout(stdout),
+		opforengine.WithStderr(stderr),
+	}
+	if observeBindings {
+		options = append(options, opforengine.WithBindingObserver(manager))
+	}
+	return opforengine.New(options...)
+}
+
+// Registered observes declarations published by loaded scripts. Only Beacon
+// aliases become Sliver commands; other binding families remain available to
+// OPFOR internally for hooks, events, and callback composition.
+func (manager *Manager) Registered(_ context.Context, binding opforengine.Binding) error {
+	if binding.Kind != opforengine.BindingAlias {
+		return nil
+	}
+	manager.mu.Lock()
+	manager.aliases[binding.Name] = append(manager.aliases[binding.Name], binding)
+	manager.mu.Unlock()
+	return nil
+}
+
+// Unregistered removes the exact binding generation which retired. An older
+// alias with the same name remains visible when scripts were layered.
+func (manager *Manager) Unregistered(_ context.Context, binding opforengine.Binding) error {
+	if binding.Kind != opforengine.BindingAlias {
+		return nil
+	}
+	manager.mu.Lock()
+	bindings := manager.aliases[binding.Name]
+	for index := len(bindings) - 1; index >= 0; index-- {
+		if bindings[index].ID == binding.ID && bindings[index].Script == binding.Script {
+			bindings = append(bindings[:index], bindings[index+1:]...)
+			break
+		}
+	}
+	if len(bindings) == 0 {
+		delete(manager.aliases, binding.Name)
+	} else {
+		manager.aliases[binding.Name] = bindings
+	}
+	manager.mu.Unlock()
+	return nil
+}
+
+// Load compiles and executes a CNA, retaining its registrations until unload.
+func (manager *Manager) Load(ctx context.Context, path string) (string, error) {
+	absolute, content, err := readCNAFile(path)
+	if err != nil {
+		return "", err
+	}
+
+	manager.loadMu.Lock()
+	defer manager.loadMu.Unlock()
+
+	manager.mu.RLock()
+	_, exists := manager.scripts[absolute]
+	manager.mu.RUnlock()
+	if exists {
+		return "", fmt.Errorf("opfor: script is already loaded: %s", absolute)
+	}
+
+	program, err := manager.runtime.Compile(opforengine.NewSource(absolute, content))
+	if err != nil {
+		return "", fmt.Errorf("opfor: compile %s: %w", absolute, err)
+	}
+	script, err := manager.runtime.Load(ctx, program)
+	if err != nil {
+		return "", fmt.Errorf("opfor: load %s: %w", absolute, err)
+	}
+
+	manager.mu.Lock()
+	manager.scripts[absolute] = script
+	manager.mu.Unlock()
+	manager.syncAllRoots()
+	return absolute, nil
+}
+
+// Check compiles a CNA without creating a Script or executing top-level code.
+// Standalone compilation intentionally mirrors the OPFOR CLI check command and
+// avoids charging the long-lived Sliver runtime's source budget.
+func (manager *Manager) Check(path string) (string, error) {
+	absolute, _, err := compileCNAFile(path)
+	return absolute, err
+}
+
+// Run executes a CNA once with arguments exposed through Sleep's @ARGV. Any
+// aliases, hooks, callbacks, or events registered by the script are retired
+// before this method returns, matching the OPFOR CLI run command.
+func (manager *Manager) Run(ctx context.Context, path string, arguments []string) (string, error) {
+	absolute, program, err := compileCNAFile(path)
+	if err != nil {
+		return "", err
+	}
+	values := make([]opforengine.Value, len(arguments))
+	for index, argument := range arguments {
+		values[index] = opforengine.String(argument)
+	}
+
+	// A one-shot runtime matches the standalone OPFOR CLI and prevents
+	// temporary registrations from becoming visible to the persistent Sliver
+	// manager. It retains all Sliver providers but deliberately omits the
+	// binding observer used to publish persistent aliases.
+	runtime, err := manager.newRuntime(false)
+	if err != nil {
+		return "", fmt.Errorf("opfor: create runtime: %w", err)
+	}
+	_, executeErr := runtime.Execute(ctx, program, values...)
+	closeCtx, cancel := context.WithTimeout(context.Background(), oneShotRuntimeCloseTimeout)
+	closeErr := runtime.Close(closeCtx)
+	cancel()
+	if executeErr != nil || closeErr != nil {
+		var runErr error
+		if executeErr != nil {
+			runErr = fmt.Errorf("opfor: execute %s: %w", absolute, executeErr)
+		}
+		if closeErr != nil {
+			runErr = errors.Join(runErr, fmt.Errorf("opfor: close runtime: %w", closeErr))
+		}
+		return "", runErr
+	}
+	return absolute, nil
+}
+
+// Unload retires a loaded CNA and all registrations owned by that script.
+func (manager *Manager) Unload(ctx context.Context, path string) (string, error) {
+	manager.loadMu.Lock()
+	defer manager.loadMu.Unlock()
+
+	absolute, script, err := manager.findScript(path)
+	if err != nil {
+		return "", err
+	}
+	if err := script.Unload(ctx); err != nil {
+		return "", fmt.Errorf("opfor: unload %s: %w", absolute, err)
+	}
+	manager.mu.Lock()
+	delete(manager.scripts, absolute)
+	manager.mu.Unlock()
+	manager.syncAllRoots()
+	return absolute, nil
+}
+
+func (manager *Manager) findScript(path string) (string, *opforengine.Script, error) {
+	absolute, absoluteErr := filepath.Abs(path)
+	if absoluteErr == nil {
+		absolute = filepath.Clean(absolute)
+	}
+
+	manager.mu.RLock()
+	defer manager.mu.RUnlock()
+	if absoluteErr == nil {
+		if script := manager.scripts[absolute]; script != nil {
+			return absolute, script, nil
+		}
+	}
+
+	base := filepath.Base(path)
+	var matchedPath string
+	var matchedScript *opforengine.Script
+	for candidate, script := range manager.scripts {
+		if filepath.Base(candidate) != base {
+			continue
+		}
+		if matchedScript != nil {
+			return "", nil, fmt.Errorf("opfor: script name %q is ambiguous; use an absolute path", path)
+		}
+		matchedPath, matchedScript = candidate, script
+	}
+	if matchedScript == nil {
+		return "", nil, fmt.Errorf("opfor: script is not loaded: %s", path)
+	}
+	return matchedPath, matchedScript, nil
+}
+
+// Paths returns the sorted absolute paths of all loaded CNA scripts.
+func (manager *Manager) Paths() []string {
+	manager.mu.RLock()
+	paths := make([]string, 0, len(manager.scripts))
+	for path := range manager.scripts {
+		paths = append(paths, path)
+	}
+	manager.mu.RUnlock()
+	sort.Strings(paths)
+	return paths
+}
+
+func (manager *Manager) aliasNames() []string {
+	manager.mu.RLock()
+	names := make([]string, 0, len(manager.aliases))
+	for name, bindings := range manager.aliases {
+		if len(bindings) != 0 {
+			names = append(names, name)
+		}
+	}
+	manager.mu.RUnlock()
+	sort.Strings(names)
+	return names
+}
+
+func (manager *Manager) aliasBindingCounts() map[string]int {
+	manager.mu.RLock()
+	counts := make(map[string]int, len(manager.aliases))
+	for name, bindings := range manager.aliases {
+		if len(bindings) != 0 {
+			counts[name] = len(bindings)
+		}
+	}
+	manager.mu.RUnlock()
+	return counts
+}
+
+func (manager *Manager) hasAlias(name string) bool {
+	manager.mu.RLock()
+	defer manager.mu.RUnlock()
+	return len(manager.aliases[name]) != 0
+}
+
+func (manager *Manager) aliasMetadata(name string) (opforengine.AggressorCommandMetadata, error) {
+	if reservedManagementAlias(name) || !manager.hasAlias(name) {
+		return opforengine.AggressorCommandMetadata{}, fmt.Errorf("opfor: unknown CNA alias %q", name)
+	}
+	catalog, err := manager.runtime.SnapshotAggressorCommandCatalog(opforengine.AggressorCommandBeacon)
+	if err != nil {
+		return opforengine.AggressorCommandMetadata{}, fmt.Errorf("opfor: snapshot Beacon command help: %w", err)
+	}
+	for _, metadata := range catalog.Commands {
+		if metadata.Name == name {
+			return metadata, nil
+		}
+	}
+	return opforengine.AggressorCommandMetadata{Name: name}, nil
+}
+
+func absoluteCNAPath(path string) (string, error) {
+	if strings.TrimSpace(path) == "" {
+		return "", errors.New("opfor: CNA script path is empty")
+	}
+	absolute, err := filepath.Abs(path)
+	if err != nil {
+		return "", fmt.Errorf("opfor: resolve %s: %w", path, err)
+	}
+	absolute = filepath.Clean(absolute)
+	if !strings.EqualFold(filepath.Ext(absolute), ".cna") {
+		return "", fmt.Errorf("opfor: script must have a .cna extension: %s", absolute)
+	}
+	return absolute, nil
+}
+
+func readCNAFile(path string) (string, []byte, error) {
+	absolute, err := absoluteCNAPath(path)
+	if err != nil {
+		return "", nil, err
+	}
+	content, err := os.ReadFile(absolute)
+	if err != nil {
+		return "", nil, fmt.Errorf("opfor: read %s: %w", absolute, err)
+	}
+	return absolute, content, nil
+}
+
+func compileCNAFile(path string) (string, *opforengine.Program, error) {
+	absolute, content, err := readCNAFile(path)
+	if err != nil {
+		return "", nil, err
+	}
+	program, err := opforengine.Compile(opforengine.NewSource(absolute, content))
+	if err != nil {
+		return "", nil, fmt.Errorf("opfor: compile %s: %w", absolute, err)
+	}
+	return absolute, program, nil
+}
+
+type clientWriter struct {
+	output clientOutput
+	stderr bool
+}
+
+func (writer clientWriter) Write(data []byte) (int, error) {
+	if writer.output == nil || len(data) == 0 {
+		return len(data), nil
+	}
+	if writer.stderr {
+		writer.output.PrintErrorf("%s", data)
+	} else {
+		writer.output.Printf("%s", data)
+	}
+	return len(data), nil
+}
+
+type clientOutput interface {
+	Printf(string, ...any)
+	PrintInfof(string, ...any)
+	PrintSuccessf(string, ...any)
+	PrintErrorf(string, ...any)
+}
+
+var _ io.Writer = clientWriter{}
+var _ opforengine.BindingObserver = (*Manager)(nil)

client/command/opfor/providers.go

@@ -0,0 +1,498 @@
+//go:build client
+
+package opfor
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/binary"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"math"
+	"strings"
+	"time"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/bishopfox/sliver/protobuf/clientpb"
+	"github.com/bishopfox/sliver/protobuf/commonpb"
+	"github.com/bishopfox/sliver/protobuf/rpcpb"
+	"github.com/bishopfox/sliver/protobuf/sliverpb"
+	opforengine "github.com/sliverarmory/opfor"
+	"google.golang.org/grpc"
+	"google.golang.org/protobuf/proto"
+)
+
+const (
+	beaconTaskPollInterval   = 250 * time.Millisecond
+	bofRequestFallback       = 59 * time.Second
+	bofRequestDeadlineMargin = time.Second
+
+	bofOutputDefault = int32(0x00)
+	bofOutputError   = int32(0x0d)
+)
+
+type opforRPC interface {
+	GetSessions(context.Context, *commonpb.Empty, ...grpc.CallOption) (*clientpb.Sessions, error)
+	GetBeacons(context.Context, *commonpb.Empty, ...grpc.CallOption) (*clientpb.Beacons, error)
+	GetBeaconTaskContent(context.Context, *clientpb.BeaconTask, ...grpc.CallOption) (*clientpb.BeaconTask, error)
+	CallExtension(context.Context, *sliverpb.CallExtensionReq, ...grpc.CallOption) (*sliverpb.CallExtension, error)
+}
+
+var _ opforRPC = (rpcpb.SliverRPCClient)(nil)
+
+type resolvedTarget struct {
+	session *clientpb.Session
+	beacon  *clientpb.Beacon
+}
+
+func (target resolvedTarget) id() string {
+	if target.session != nil {
+		return target.session.ID
+	}
+	if target.beacon != nil {
+		return target.beacon.ID
+	}
+	return ""
+}
+
+func (target resolvedTarget) capabilities() uint64 {
+	if target.session != nil {
+		return target.session.Capabilities
+	}
+	if target.beacon != nil {
+		return target.beacon.Capabilities
+	}
+	return 0
+}
+
+func (target resolvedTarget) arch() string {
+	if target.session != nil {
+		return target.session.Arch
+	}
+	if target.beacon != nil {
+		return target.beacon.Arch
+	}
+	return ""
+}
+
+func (manager *Manager) rpc() (opforRPC, error) {
+	if manager == nil || manager.client == nil || manager.client.Rpc == nil {
+		return nil, errors.New("opfor: Sliver RPC client is unavailable")
+	}
+	return manager.client.Rpc, nil
+}
+
+func (manager *Manager) resolveTarget(ctx context.Context, id string) (resolvedTarget, error) {
+	if strings.TrimSpace(id) == "" {
+		return resolvedTarget{}, errors.New("opfor: target ID is empty")
+	}
+	rpc, err := manager.rpc()
+	if err != nil {
+		return resolvedTarget{}, err
+	}
+	sessions, err := rpc.GetSessions(ctx, &commonpb.Empty{})
+	if err != nil {
+		return resolvedTarget{}, fmt.Errorf("opfor: list sessions: %w", err)
+	}
+	for _, session := range sessions.GetSessions() {
+		if session != nil && session.ID == id {
+			return resolvedTarget{session: session}, nil
+		}
+	}
+	beacons, err := rpc.GetBeacons(ctx, &commonpb.Empty{})
+	if err != nil {
+		return resolvedTarget{}, fmt.Errorf("opfor: list beacons: %w", err)
+	}
+	for _, beacon := range beacons.GetBeacons() {
+		if beacon != nil && beacon.ID == id {
+			return resolvedTarget{beacon: beacon}, nil
+		}
+	}
+	return resolvedTarget{}, fmt.Errorf("opfor: target %q was not found", id)
+}
+
+func (manager *Manager) executeBeacon(
+	ctx context.Context,
+	request opforengine.AggressorBeaconExecutionRequest,
+) (opforengine.Value, error) {
+	targetID, call, err := manager.prepareBeaconExecution(ctx, request)
+	if err != nil {
+		return opforengine.Null(), err
+	}
+
+	rpc, err := manager.rpc()
+	if err != nil {
+		return opforengine.Null(), err
+	}
+	response, err := rpc.CallExtension(ctx, call)
+	if err != nil {
+		executionErr := fmt.Errorf("opfor: execute BOF on %s: %w", targetID, err)
+		return opforengine.Null(), notifyBOFLifecycleError(ctx, request, "", executionErr)
+	}
+	taskID := response.GetResponse().GetTaskID()
+	response, err = manager.resolveCallExtensionResponse(ctx, rpc, response)
+	if err != nil {
+		return opforengine.Null(), notifyBOFLifecycleError(ctx, request, taskID, err)
+	}
+	if taskID == "" {
+		taskID = response.GetResponse().GetTaskID()
+	}
+
+	return manager.completeBeaconExecution(ctx, request, taskID, response)
+}
+
+func (manager *Manager) prepareBeaconExecution(
+	ctx context.Context,
+	request opforengine.AggressorBeaconExecutionRequest,
+) (string, *sliverpb.CallExtensionReq, error) {
+	if request.Kind != opforengine.AggressorBeaconInlineExecute {
+		return "", nil, fmt.Errorf("opfor: unsupported Beacon execution function %q", request.Name)
+	}
+	if err := ctx.Err(); err != nil {
+		return "", nil, err
+	}
+	targetID := request.BeaconID.String()
+	target, err := manager.resolveTarget(ctx, targetID)
+	if err != nil {
+		return "", nil, err
+	}
+	if _, err := beaconArchitecture(target.arch()); err != nil {
+		return "", nil, err
+	}
+	if target.capabilities()&sliverpb.CapabilityBOFV1 == 0 {
+		return "", nil, fmt.Errorf("opfor: target %q does not advertise the bof_v1 capability", targetID)
+	}
+
+	bofData, ok := request.Content.Bytes()
+	if !ok {
+		return "", nil, errors.New("opfor: beacon_inline_execute BOF content is not a byte string")
+	}
+	packed, ok := request.PackedArguments.Bytes()
+	if !ok {
+		packed = []byte(request.PackedArguments.String())
+	}
+	arguments, err := prefixBOFArguments(packed)
+	if err != nil {
+		return "", nil, err
+	}
+	digest := sha256.Sum256(bofData)
+	return targetID, &sliverpb.CallExtensionReq{
+		Name:    hex.EncodeToString(digest[:]),
+		Args:    arguments,
+		Export:  request.EntryPoint.String(),
+		BOFData: bofData,
+		IsBOF:   true,
+		// Older implants ignore this additive request bit and return legacy
+		// flattened Output, which bofOutputRecords continues to accept.
+		WantBOFOutputs: true,
+		Request:        targetRequest(ctx, target),
+	}, nil
+}
+
+func (manager *Manager) completeBeaconExecution(
+	ctx context.Context,
+	request opforengine.AggressorBeaconExecutionRequest,
+	taskID string,
+	response *sliverpb.CallExtension,
+) (opforengine.Value, error) {
+	records := bofOutputRecords(response)
+	var executionErr error
+	if response.GetResponse().GetErr() != "" {
+		executionErr = fmt.Errorf("opfor: BOF execution failed: %s", response.GetResponse().GetErr())
+	}
+	if request.Callback == nil {
+		manager.renderBOFOutputs(records)
+		if executionErr != nil {
+			return opforengine.Null(), executionErr
+		}
+		return opforengine.Null(), nil
+	}
+
+	for index, record := range records {
+		chunkNumber := index + 1
+		isFinal := index == len(records)-1
+		if err := invokeBOFOutputCallback(ctx, request, record, chunkNumber, isFinal); err != nil {
+			callbackErr := fmt.Errorf("opfor: BOF result callback chunk %d: %w", chunkNumber, err)
+			if executionErr != nil {
+				return opforengine.Null(), errors.Join(executionErr, callbackErr)
+			}
+			return opforengine.Null(), callbackErr
+		}
+	}
+	if executionErr != nil {
+		return opforengine.Null(), notifyBOFLifecycleError(ctx, request, taskID, executionErr)
+	}
+	if taskID != "" {
+		if err := invokeBOFLifecycleCallback(ctx, request, "task_completed", taskID, nil); err != nil {
+			return opforengine.Null(), fmt.Errorf("opfor: BOF task_completed callback: %w", err)
+		}
+	} else if len(records) == 0 {
+		if err := invokeBOFLifecycleCallback(ctx, request, "success", "", nil); err != nil {
+			return opforengine.Null(), fmt.Errorf("opfor: BOF success callback: %w", err)
+		}
+	}
+	return opforengine.Null(), nil
+}
+
+// bofOutputRecords prefers the typed wire representation. Older servers and
+// implants populate only Output, which remains one default-channel record.
+func bofOutputRecords(response *sliverpb.CallExtension) []*sliverpb.BOFOutput {
+	if response == nil {
+		return nil
+	}
+	if records := response.GetBOFOutputs(); len(records) != 0 {
+		return records
+	}
+	if len(response.GetOutput()) == 0 {
+		return nil
+	}
+	return []*sliverpb.BOFOutput{{
+		Type: bofOutputDefault,
+		Data: response.GetOutput(),
+	}}
+}
+
+// The callback is deliberately multi-shot. Data records retain their exact
+// byte strings and raw Cobalt output channel. chunk_num is one-based and
+// is_final marks the final data record, independently of task lifecycle events.
+func invokeBOFOutputCallback(
+	ctx context.Context,
+	request opforengine.AggressorBeaconExecutionRequest,
+	record *sliverpb.BOFOutput,
+	chunkNumber int,
+	isFinal bool,
+) error {
+	if request.Callback == nil {
+		return nil
+	}
+	if record == nil {
+		record = &sliverpb.BOFOutput{}
+	}
+	kind := "output"
+	if record.GetType() == bofOutputError {
+		kind = "error"
+	}
+	information := opforengine.NewOrderedHash()
+	information.Set("type", opforengine.String(kind))
+	information.Set("type_id", opforengine.Int(record.GetType()))
+	information.Set("chunk_num", opforengine.Int(int32(chunkNumber)))
+	information.Set("is_final", opforengine.Bool(isFinal))
+	_, err := request.Callback.Invoke(
+		ctx,
+		request.BeaconID,
+		opforengine.BinaryString(record.GetData()),
+		opforengine.HashValue(information),
+	)
+	return err
+}
+
+func invokeBOFLifecycleCallback(
+	ctx context.Context,
+	request opforengine.AggressorBeaconExecutionRequest,
+	kind string,
+	taskID string,
+	result []byte,
+) error {
+	if request.Callback == nil {
+		return nil
+	}
+	information := opforengine.NewOrderedHash()
+	information.Set("type", opforengine.String(kind))
+	if taskID != "" {
+		information.Set("taskid", opforengine.String(taskID))
+	}
+	_, err := request.Callback.Invoke(
+		ctx,
+		request.BeaconID,
+		opforengine.BinaryString(result),
+		opforengine.HashValue(information),
+	)
+	return err
+}
+
+func notifyBOFLifecycleError(
+	ctx context.Context,
+	request opforengine.AggressorBeaconExecutionRequest,
+	taskID string,
+	executionErr error,
+) error {
+	if request.Callback == nil {
+		return executionErr
+	}
+	if ctx != nil && ctx.Err() != nil {
+		return executionErr
+	}
+	callbackErr := invokeBOFLifecycleCallback(
+		ctx, request, "error", taskID, []byte(executionErr.Error()),
+	)
+	if callbackErr != nil {
+		return errors.Join(executionErr, fmt.Errorf("opfor: BOF error callback: %w", callbackErr))
+	}
+	return executionErr
+}
+
+func (manager *Manager) renderBOFOutputs(records []*sliverpb.BOFOutput) {
+	wrote := false
+	endedWithNewline := true
+	for _, record := range records {
+		if record == nil || len(record.GetData()) == 0 {
+			continue
+		}
+		text := safeBOFText(record.GetData())
+		if text == "" {
+			continue
+		}
+		wrote = true
+		endedWithNewline = strings.HasSuffix(text, "\n")
+		if record.GetType() == bofOutputError {
+			manager.output.PrintErrorf("%s", text)
+		} else {
+			manager.output.Printf("%s", text)
+		}
+	}
+	if wrote && !endedWithNewline {
+		manager.output.Printf("\n")
+	}
+}
+
+// safeBOFText prevents untrusted native output from injecting terminal control
+// sequences. Valid printable UTF-8 plus tab/newline/carriage return is retained;
+// invalid bytes and other control bytes are rendered as hexadecimal escapes.
+func safeBOFText(data []byte) string {
+	var result strings.Builder
+	result.Grow(len(data))
+	for len(data) != 0 {
+		r, size := utf8.DecodeRune(data)
+		if r == utf8.RuneError && size == 1 {
+			fmt.Fprintf(&result, `\x%02x`, data[0])
+			data = data[1:]
+			continue
+		}
+		if r == '\n' || r == '\r' || r == '\t' || unicode.IsPrint(r) {
+			result.WriteRune(r)
+		} else {
+			for _, value := range data[:size] {
+				fmt.Fprintf(&result, `\x%02x`, value)
+			}
+		}
+		data = data[size:]
+	}
+	return result.String()
+}
+
+func prefixBOFArguments(packed []byte) ([]byte, error) {
+	if uint64(len(packed)) > math.MaxUint32 {
+		return nil, errors.New("opfor: BOF argument buffer exceeds uint32 length")
+	}
+	arguments := make([]byte, 4+len(packed))
+	binary.LittleEndian.PutUint32(arguments, uint32(len(packed)))
+	copy(arguments[4:], packed)
+	return arguments, nil
+}
+
+func targetRequest(ctx context.Context, target resolvedTarget) *commonpb.Request {
+	request := &commonpb.Request{Timeout: int64(bofRequestTimeout(ctx))}
+	if target.session != nil {
+		request.SessionID = target.session.ID
+		request.Async = false
+	} else if target.beacon != nil {
+		request.BeaconID = target.beacon.ID
+		request.Async = true
+	}
+	return request
+}
+
+func bofRequestTimeout(ctx context.Context) time.Duration {
+	if ctx == nil {
+		return bofRequestFallback
+	}
+	deadline, ok := ctx.Deadline()
+	if !ok {
+		return bofRequestFallback
+	}
+	remaining := time.Until(deadline)
+	if remaining <= 0 {
+		return time.Nanosecond
+	}
+	if remaining > bofRequestDeadlineMargin {
+		remaining -= bofRequestDeadlineMargin
+	}
+	return remaining
+}
+
+func (manager *Manager) resolveCallExtensionResponse(
+	ctx context.Context,
+	rpc opforRPC,
+	response *sliverpb.CallExtension,
+) (*sliverpb.CallExtension, error) {
+	if response == nil {
+		return nil, errors.New("opfor: BOF execution returned an empty response")
+	}
+	if response.GetResponse().GetErr() != "" || !response.GetResponse().GetAsync() {
+		return response, nil
+	}
+	taskID := response.GetResponse().GetTaskID()
+	if taskID == "" {
+		return nil, errors.New("opfor: asynchronous BOF execution returned no task ID")
+	}
+
+	ticker := time.NewTicker(beaconTaskPollInterval)
+	defer ticker.Stop()
+	for {
+		task, err := rpc.GetBeaconTaskContent(ctx, &clientpb.BeaconTask{ID: taskID})
+		if err != nil {
+			return nil, fmt.Errorf("opfor: fetch beacon task %s: %w", taskID, err)
+		}
+		state := strings.ToLower(task.GetState())
+		switch state {
+		case "completed":
+			if len(task.Response) == 0 {
+				return nil, fmt.Errorf("opfor: beacon task %s returned an empty response", taskID)
+			}
+			completed := &sliverpb.CallExtension{}
+			if err := proto.Unmarshal(task.Response, completed); err != nil {
+				return nil, fmt.Errorf("opfor: decode beacon task %s response: %w", taskID, err)
+			}
+			if completed.Response == nil {
+				completed.Response = &commonpb.Response{}
+			}
+			if completed.Response.TaskID == "" {
+				completed.Response.TaskID = taskID
+			}
+			return completed, nil
+		case "failed", "canceled", "cancelled":
+			return nil, fmt.Errorf("opfor: beacon task %s %s", taskID, state)
+		}
+
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		case <-ticker.C:
+		}
+	}
+}
+
+func (manager *Manager) publishTranscript(
+	_ context.Context,
+	record opforengine.AggressorBeaconTranscriptRecord,
+) error {
+	target := record.BeaconID.String()
+	text := record.Text.String()
+	prefix := ""
+	if target != "" {
+		prefix = "[" + target + "] "
+	}
+	switch record.Kind {
+	case opforengine.AggressorBeaconTranscriptError,
+		opforengine.AggressorBeaconTranscriptJobError:
+		manager.output.PrintErrorf("%s%s\n", prefix, text)
+	case opforengine.AggressorBeaconTranscriptTask,
+		opforengine.AggressorBeaconTranscriptTaskCompleted:
+		manager.output.PrintInfof("%s%s\n", prefix, text)
+	default:
+		manager.output.Printf("%s%s\n", prefix, text)
+	}
+	return nil
+}

client/command/opfor/session.go

@@ -0,0 +1,218 @@
+//go:build client
+
+package opfor
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/bishopfox/sliver/protobuf/commonpb"
+	opforengine "github.com/sliverarmory/opfor"
+)
+
+func (manager *Manager) querySession(
+	ctx context.Context,
+	query opforengine.AggressorSessionQuery,
+) (opforengine.Value, error) {
+	if err := ctx.Err(); err != nil {
+		return opforengine.Null(), err
+	}
+
+	switch query.Kind {
+	case opforengine.AggressorSessionQueryBeacons,
+		opforengine.AggressorSessionQueryBeaconIDs:
+		return manager.queryAllSessions(ctx, query.Kind)
+	default:
+		return manager.querySingleSession(ctx, query)
+	}
+}
+
+func (manager *Manager) queryAllSessions(
+	ctx context.Context,
+	kind opforengine.AggressorSessionQueryKind,
+) (opforengine.Value, error) {
+	targets, err := manager.allTargets(ctx)
+	if err != nil {
+		return opforengine.Null(), err
+	}
+	values := make([]opforengine.Value, 0, len(targets))
+	for _, target := range targets {
+		if kind == opforengine.AggressorSessionQueryBeaconIDs {
+			values = append(values, opforengine.String(target.id()))
+		} else {
+			values = append(values, opforengine.HashValue(targetMetadata(target)))
+		}
+	}
+	return opforengine.ArrayValue(opforengine.NewArray(values...)), nil
+}
+
+func (manager *Manager) querySingleSession(
+	ctx context.Context,
+	query opforengine.AggressorSessionQuery,
+) (opforengine.Value, error) {
+	target, err := manager.resolveTarget(ctx, query.SessionID.String())
+	if err != nil {
+		return opforengine.Null(), err
+	}
+	metadata := targetMetadata(target)
+	switch query.Kind {
+	case opforengine.AggressorSessionQueryBeaconArchitecture,
+		opforengine.AggressorSessionQueryBeaconData,
+		opforengine.AggressorSessionQueryBeaconInfo,
+		opforengine.AggressorSessionQueryIs64:
+		return querySessionMetadata(target, metadata, query)
+	case opforengine.AggressorSessionQueryIsActive,
+		opforengine.AggressorSessionQueryIsAdmin,
+		opforengine.AggressorSessionQueryIsBeacon,
+		opforengine.AggressorSessionQueryIsSSH:
+		return querySessionStatus(target, query)
+	default:
+		return opforengine.Null(), fmt.Errorf("opfor: unsupported session query %q", query.Name)
+	}
+}
+
+func querySessionMetadata(
+	target resolvedTarget,
+	metadata *opforengine.Hash,
+	query opforengine.AggressorSessionQuery,
+) (opforengine.Value, error) {
+	switch query.Kind {
+	case opforengine.AggressorSessionQueryBeaconArchitecture:
+		architecture, err := beaconArchitecture(target.arch())
+		if err != nil {
+			return opforengine.Null(), err
+		}
+		return opforengine.String(architecture), nil
+	case opforengine.AggressorSessionQueryBeaconData:
+		return opforengine.HashValue(metadata), nil
+	case opforengine.AggressorSessionQueryBeaconInfo:
+		value, found := metadata.Get(strings.ToLower(query.Key.String()))
+		if !found {
+			return opforengine.Null(), nil
+		}
+		return value, nil
+	case opforengine.AggressorSessionQueryIs64:
+		architecture, err := beaconArchitecture(target.arch())
+		if err != nil {
+			return opforengine.Null(), err
+		}
+		return opforengine.Bool(architecture == "x64"), nil
+	default:
+		return opforengine.Null(), fmt.Errorf("opfor: unsupported session metadata query %q", query.Name)
+	}
+}
+
+func querySessionStatus(
+	target resolvedTarget,
+	query opforengine.AggressorSessionQuery,
+) (opforengine.Value, error) {
+	switch query.Kind {
+	case opforengine.AggressorSessionQueryIsActive:
+		if target.session != nil {
+			return opforengine.Bool(!target.session.IsDead), nil
+		}
+		return opforengine.Bool(target.beacon != nil && !target.beacon.IsDead), nil
+	case opforengine.AggressorSessionQueryIsAdmin:
+		integrity := strings.ToLower(targetIntegrity(target))
+		return opforengine.Bool(strings.Contains(integrity, "high") || strings.Contains(integrity, "system") || strings.Contains(integrity, "admin")), nil
+	case opforengine.AggressorSessionQueryIsBeacon:
+		return opforengine.Bool(target.beacon != nil), nil
+	case opforengine.AggressorSessionQueryIsSSH:
+		return opforengine.Bool(false), nil
+	default:
+		return opforengine.Null(), fmt.Errorf("opfor: unsupported session status query %q", query.Name)
+	}
+}
+
+func targetIntegrity(target resolvedTarget) string {
+	if target.session != nil {
+		return target.session.Integrity
+	}
+	if target.beacon != nil {
+		return target.beacon.Integrity
+	}
+	return ""
+}
+
+func (manager *Manager) allTargets(ctx context.Context) ([]resolvedTarget, error) {
+	rpc, err := manager.rpc()
+	if err != nil {
+		return nil, err
+	}
+	sessions, err := rpc.GetSessions(ctx, &commonpb.Empty{})
+	if err != nil {
+		return nil, fmt.Errorf("opfor: list sessions: %w", err)
+	}
+	beacons, err := rpc.GetBeacons(ctx, &commonpb.Empty{})
+	if err != nil {
+		return nil, fmt.Errorf("opfor: list beacons: %w", err)
+	}
+	targets := make([]resolvedTarget, 0, len(sessions.GetSessions())+len(beacons.GetBeacons()))
+	for _, session := range sessions.GetSessions() {
+		if session != nil {
+			targets = append(targets, resolvedTarget{session: session})
+		}
+	}
+	for _, beacon := range beacons.GetBeacons() {
+		if beacon != nil {
+			targets = append(targets, resolvedTarget{beacon: beacon})
+		}
+	}
+	return targets, nil
+}
+
+func beaconArchitecture(arch string) (string, error) {
+	switch strings.ToLower(arch) {
+	case "amd64", "x64", "x86_64":
+		return "x64", nil
+	case "386", "x86", "i386":
+		return "x86", nil
+	default:
+		return "", fmt.Errorf("opfor: unsupported BOF target architecture %q", arch)
+	}
+}
+
+func targetMetadata(target resolvedTarget) *opforengine.Hash {
+	metadata := opforengine.NewOrderedHash()
+	set := func(key string, value opforengine.Value) { metadata.Set(key, value) }
+	if target.session != nil {
+		appendTargetMetadata(set, target.session.ID, target.session.Name, target.session.Hostname,
+			target.session.Username, target.session.OS, target.session.Arch, target.session.Transport,
+			target.session.RemoteAddress, target.session.Filename, target.session.Version,
+			target.session.Integrity, target.session.PID, !target.session.IsDead, false)
+	} else if target.beacon != nil {
+		appendTargetMetadata(set, target.beacon.ID, target.beacon.Name, target.beacon.Hostname,
+			target.beacon.Username, target.beacon.OS, target.beacon.Arch, target.beacon.Transport,
+			target.beacon.RemoteAddress, target.beacon.Filename, target.beacon.Version,
+			target.beacon.Integrity, target.beacon.PID, !target.beacon.IsDead, true)
+	}
+	return metadata
+}
+
+func appendTargetMetadata(
+	set func(string, opforengine.Value),
+	id, name, hostname, username, osName, arch, transport, remoteAddress, filename, version, integrity string,
+	pid int32,
+	active, beacon bool,
+) {
+	architecture, err := beaconArchitecture(arch)
+	if err != nil {
+		architecture = strings.ToLower(arch)
+	}
+	set("id", opforengine.String(id))
+	set("name", opforengine.String(name))
+	set("computer", opforengine.String(hostname))
+	set("host", opforengine.String(hostname))
+	set("user", opforengine.String(username))
+	set("os", opforengine.String(osName))
+	set("arch", opforengine.String(architecture))
+	set("transport", opforengine.String(transport))
+	set("external", opforengine.String(remoteAddress))
+	set("process", opforengine.String(filename))
+	set("version", opforengine.String(version))
+	set("integrity", opforengine.String(integrity))
+	set("pid", opforengine.Int(pid))
+	set("active", opforengine.Bool(active))
+	set("beacon", opforengine.Bool(beacon))
+}

client/command/opfor/testdata/corpus/SOURCES.md

@@ -0,0 +1,11 @@
+# SliverArmory CNA corpus
+
+These unmodified CNA scripts are pinned regression fixtures for the OPFOR client integration. The tests pair them with inert object bytes and verify script loading, command registration, resource resolution, BOF argument packing, and Sliver dispatch; they do not execute the embedded BOF code locally.
+
+| Fixture | Upstream revision | License |
+| --- | --- | --- |
+| `firefoxdump/firefoxdump.cna` | [`sliverarmory/firefoxdump@19bec6f`](https://github.com/sliverarmory/firefoxdump/tree/19bec6fb2def510b299430955fb2be79c1f51820) | GPL-3.0-only; see the Sliver repository root `LICENSE` |
+| `bof_collection/cat.cna` | [`sliverarmory/bof_collection@d937d25`](https://github.com/sliverarmory/bof_collection/tree/d937d25a164f40192e289b67e9c550d2bd4c369a) | Apache-2.0; copied `LICENSE` and `NOTICE` are retained here |
+| `operatorskit/finddotnet.cna` and `findsysmon.cna` | [`sliverarmory/OperatorsKit@66368f4`](https://github.com/sliverarmory/OperatorsKit/tree/66368f4738528d26cc1ccc6d9a3c93d44d63edc1) | MIT; copied `LICENSE` is retained here |
+
+The object files are intentionally not vendored. Live BOF execution belongs in a safety-gated Windows integration environment, while these fixtures keep the client test suite deterministic and platform independent.

client/command/opfor/testdata/corpus/bof_collection/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
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+
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+      "Contribution" shall mean any work of authorship, including
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+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
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+      designated in writing by the copyright owner as "Not a Contribution."
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
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+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
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+      meet the following conditions:
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+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
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+      (b) You must cause any modified files to carry prominent notices
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+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
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+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      other commercial damages or losses), even if such Contributor
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+   limitations under the License.

client/command/opfor/testdata/corpus/bof_collection/NOTICE

@@ -0,0 +1,26 @@
+bof_collection
+Copyright 2026 Pim Beune
+
+This product includes a modified copy of beacon.h derived from the
+Cobalt-Strike/bof_template project, which is licensed under the Apache License,
+Version 2.0. The local copy has been updated from the upstream template and is
+distributed under the same license.
+
+Armory packaging and integration changes were made by Sliver Armory
+contributors.
+
+Research and reference acknowledgements retained from the source project:
+
+- Outflank: Remote Registry Protocol information-disclosure techniques
+  (https://www.youtube.com/watch?v=MxDq552Di3Y) and remote named-pipe
+  enumeration research
+  (https://outflank.nl/blog/2023/10/19/listing-remote-named-pipes/).
+- Julian Peña: CVE-2019-16098 exploitation write-up referenced by the driver
+  proof of concept
+  (https://julian-pena.com/2025-09-29-exploiting-drivers-1/).
+- Eric Esquivel: ntoskrnl function-offset technique acknowledged in the
+  CVE-2019-16098 source.
+
+These research acknowledgements identify referenced techniques and materials;
+they do not assert that the named researchers authored this collection's code
+or that they endorse this package.

client/command/opfor/testdata/corpus/bof_collection/cat.cna

@@ -0,0 +1,32 @@
+# author: Pim Beune
+
+beacon_command_register(
+    "cat", "Prints content of a file",
+    "INFO: Prints content of a file.\n\n" .
+    "FEATURES: UTF-8 and UTF-16 (LE/BE) compatible, with or without BOM\n" .
+    "          Refuses files larger than 128 KB\n" .
+    "          Sanitizes output: strips control characters and invalid\n" .
+    "          byte sequences (replaced with '?'), keeps tabs/newlines\n" .
+    "          Paths do not need to be quoted or backslash-escaped\n\n" .
+    "EXAMPLES: cat C:\\Users\\User\\Desktop\\flag.txt\n" .
+    "          cat C:\\Program Files\\Something\\notes.txt\n" .
+    "          cat \\\\server\\share\\folder\\file.txt");
+
+alias cat {
+    $bid = $1;
+    $file = join(" ", sublist(@_, 1));
+
+    if ($file eq "") {
+        berror($bid, "Please specify a file path.");
+        return;
+    }
+
+    # Read in the right BOF file
+    $handle = openf(script_resource("dist/cat." . barch($bid) . ".o"));
+    $data = readb($handle, -1);
+    closef($handle);
+
+    # Pack our arguments
+    $args = bof_pack($bid, "z", $file);
+    beacon_inline_execute($bid, $data, "go", $args);
+}

client/command/opfor/testdata/corpus/firefoxdump/firefoxdump.cna

@@ -0,0 +1,52 @@
+# Firefox Dump BOF - Extract Firefox passwords and cookies
+# Standalone version for Cobalt Strike
+
+beacon_command_register(
+    "firefoxdump",
+    "Extract Firefox secrets (cookies, passwords) from Firefox profile.",
+    "INFO:\n" .
+    "Extracts browser secrets from Firefox browser.\n" .
+    "This BOF reads Firefox profile files (key4.db, logins.json, cookies.sqlite).\n\n" .
+    "SUPPORTED DATA:\n" .
+    "  - Saved passwords (from logins.json - decrypted using NSS)\n" .
+    "  - Cookies (from cookies.sqlite)\n\n" .
+    "USAGE:\n" .
+    "  firefoxdump          - Extract passwords only (default)\n" .
+    "  firefoxdump /all     - Extract passwords and cookies\n" .
+    "  firefoxdump /cookies - Extract cookies only\n\n" .
+    "OUTPUT:\n" .
+    "Displays extracted passwords (cleartext) and/or cookies.\n" .
+    "Passwords are decrypted using NSS libraries from Firefox installation.\n\n" .
+    "NOTE:\n" .
+    "Requires access to the user's Firefox profile directory.\n" .
+    "Works best when run from the same user context as Firefox.\n" .
+    "Requires Firefox to be installed (for NSS libraries).\n"
+);
+
+alias firefoxdump {
+    local('$bid $barch $handle $bof $option $data');
+    $bid = $1;
+    $barch = barch($bid);
+
+    # Extract option from command line
+    if (size(@_) > 1) {
+        $option = @_[1];
+    } else {
+        $option = "";
+    }
+
+    # Read the BOF file
+    $handle = openf(script_resource("bin/firefoxdump." . $barch . ".o"));
+    $bof = readb($handle, -1);
+    closef($handle);
+
+    if (strlen($bof) == 0) {
+        berror($bid, "Could not read firefoxdump BOF file");
+        return;
+    }
+
+    # Pack option for BOF
+    $data = bof_pack($bid, "z", $option);
+    btask($bid, "Extracting Firefox secrets");
+    beacon_inline_execute($bid, $bof, "go", $data);
+}

client/command/opfor/testdata/corpus/operatorskit/LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020 awgh
+Copyright (c) 2023 REDMED-X
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

client/command/opfor/testdata/corpus/operatorskit/finddotnet.cna

@@ -0,0 +1,22 @@
+# author REDMED-X
+
+beacon_command_register(
+	"finddotnet", "Find processes that most likely have .NET loaded.",
+	"INFO:\nFind processes that most likely have .NET loaded by searching for the section name: \BaseNamedObjects\Cor_Private_IPCBlock(_v4)_<ProcessId>\n\n" .
+	"USAGE:\nfinddotnet\n\n");
+
+
+alias finddotnet {
+    $bid = $1;
+	
+    # Read in the right BOF file
+    $handle = openf(script_resource("finddotnet.o"));
+    $data   = readb($handle, -1);
+    closef($handle);
+    
+	blog($bid, "Tasked to search for processes that have .NET loaded..");
+	
+    beacon_inline_execute($bid, $data, "go", $null);
+}
+
+

client/command/opfor/testdata/corpus/operatorskit/findsysmon.cna

@@ -0,0 +1,32 @@
+# author REDMED-X
+
+beacon_command_register(
+	"findsysmon", "Verify if Sysmon is running.\n",
+	"INFO:\nVerify if Sysmon is running. This can be done by checking the registry or by enumerating Minifilter drivers and search for one that is associated with Sysmon.\n\nOPTIONS:\n[reg]: search the registry to check if Sysmon is present on the system and return the Sysmon service PID if active.\n[driver]: list all the Minifilter drivers on the system to check manually (requires elevated privileges).\n\n" .
+	"USAGE:\nfindsysmon <reg | driver>\n\n");
+
+
+alias findsysmon {
+    $bid = $1;
+    $action = $2;
+
+	if ($action eq "reg" || $action eq "driver") {
+	}
+	else {
+		berror($bid, "Please specify one of the following enumeration options: reg | driver\n");
+		return;
+	}
+	
+    # Read in the right BOF file
+    $handle = openf(script_resource("findsysmon.o"));
+    $data   = readb($handle, -1);
+    closef($handle);
+
+	# Pack our arguments
+    $arg_data  = bof_pack($bid, "z", $action);
+
+	blog($bid, "Tasked to find Sysmon..");
+    beacon_inline_execute($bid, $data, "go", $arg_data);
+}
+
+

client/command/opfor/ui.go

@@ -0,0 +1,112 @@
+//go:build client
+
+package opfor
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/bishopfox/sliver/client/forms"
+	opforengine "github.com/sliverarmory/opfor"
+)
+
+// promptUI is deliberately small and injectable. The production adapter uses
+// Sliver's existing Bubble Tea/Huh forms; tests can exercise callback behavior
+// without taking over the terminal.
+type promptUI interface {
+	Confirm(title string, defaultValue bool) (bool, error)
+	Input(title, defaultValue string) (string, error)
+}
+
+type formsPromptUI struct{}
+
+func (formsPromptUI) Confirm(title string, defaultValue bool) (bool, error) {
+	value := defaultValue
+	err := forms.Confirm(title, &value)
+	return value, err
+}
+
+func (formsPromptUI) Input(title, defaultValue string) (string, error) {
+	value := defaultValue
+	err := forms.Input(title, &value)
+	return value, err
+}
+
+func (manager *Manager) presentPrompt(
+	ctx context.Context,
+	presentation opforengine.AggressorPromptPresentation,
+	responder opforengine.AggressorPromptResponder,
+) error {
+	if responder == nil {
+		return errorsPromptResponderNil()
+	}
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+
+	switch presentation.Kind {
+	case opforengine.AggressorPromptConfirm:
+		title := joinPromptTitle(presentation.Title, presentation.Text)
+		answer, err := manager.confirmPrompt(title, false)
+		if err != nil {
+			return err
+		}
+		if !answer {
+			return responder.Dismiss()
+		}
+		_, err = responder.Accept(ctx)
+		return err
+
+	case opforengine.AggressorPromptText,
+		opforengine.AggressorPromptDirectoryOpen,
+		opforengine.AggressorPromptFileOpen,
+		opforengine.AggressorPromptFileSave:
+		title := presentation.Text
+		if title == "" {
+			title = presentation.Title
+		}
+		if title == "" {
+			title = presentation.Name
+		}
+		defaultValue := ""
+		if presentation.HasDefault {
+			defaultValue = presentation.Default.String()
+		}
+		answer, err := manager.inputPrompt(title, defaultValue)
+		if err != nil {
+			return err
+		}
+		_, err = responder.Accept(ctx, opforengine.String(answer))
+		return err
+
+	default:
+		return fmt.Errorf("opfor: unsupported prompt kind %q", presentation.Kind)
+	}
+}
+
+func (manager *Manager) confirmPrompt(title string, defaultValue bool) (bool, error) {
+	manager.promptMu.Lock()
+	defer manager.promptMu.Unlock()
+	return manager.ui.Confirm(title, defaultValue)
+}
+
+func (manager *Manager) inputPrompt(title, defaultValue string) (string, error) {
+	manager.promptMu.Lock()
+	defer manager.promptMu.Unlock()
+	return manager.ui.Input(title, defaultValue)
+}
+
+func joinPromptTitle(parts ...string) string {
+	nonempty := make([]string, 0, len(parts))
+	for _, part := range parts {
+		if part = strings.TrimSpace(part); part != "" {
+			nonempty = append(nonempty, part)
+		}
+	}
+	return strings.Join(nonempty, ": ")
+}
+
+func errorsPromptResponderNil() error {
+	return fmt.Errorf("opfor: prompt responder is nil")
+}

client/command/server.go

@@ -45,6 +45,7 @@ import (
 	"github.com/bishopfox/sliver/client/command/mcp"
 	"github.com/bishopfox/sliver/client/command/monitor"
 	"github.com/bishopfox/sliver/client/command/operators"
+	"github.com/bishopfox/sliver/client/command/opfor"
 	"github.com/bishopfox/sliver/client/command/reaction"
 	"github.com/bishopfox/sliver/client/command/serverctx"
 	"github.com/bishopfox/sliver/client/command/sessions"
@@ -101,6 +102,7 @@ func ServerCommands(con *client.SliverClient, serverCmds func() []*cobra.Command
 		bind(consts.GenericHelpGroup,
 			exit.Command,
 			ai.ServerCommands,
+			opfor.ServerCommands,
 			docscmd.ServerCommands,
 			serverctx.Commands,
 			licenses.Commands,

client/command/settings/opsec.go

@@ -50,7 +50,12 @@ func IsUserAnAdultWithPrompt(con *console.SliverClient, prompt string) bool {
 		return true
 	}
 	confirm := false
-	_ = forms.Confirm(prompt, &confirm)
+	if err := forms.Confirm(prompt, &confirm); err != nil {
+		// The interactive form is known to fail on some terminals (#2133);
+		// surface the error instead of silently treating it as a rejection.
+		con.PrintErrorf("Confirmation prompt failed: %s\n", err)
+		return false
+	}
 	return confirm
 }
 

client/command/shell/input_fallback.go

@@ -0,0 +1,32 @@
+//go:build !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !windows
+
+package shell
+
+import (
+	"io"
+	"os"
+)
+
+// This fallback preserves the legacy blocking behavior on unsupported client
+// platforms. Unix and Windows clients use cancellable implementations.
+type cancellableShellInput struct {
+	reader io.Reader
+}
+
+func newCancellableShellInput(_ *os.File, reader io.Reader) (*cancellableShellInput, error) {
+	return &cancellableShellInput{reader: reader}, nil
+}
+
+func (s *cancellableShellInput) Read(data []byte, done <-chan struct{}) (int, bool, error) {
+	select {
+	case <-done:
+		return 0, true, nil
+	default:
+	}
+	n, err := s.reader.Read(data)
+	return n, false, err
+}
+
+func (s *cancellableShellInput) Close() error {
+	return nil
+}

client/command/shell/input_test.go

@@ -0,0 +1,129 @@
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || windows
+
+package shell
+
+import (
+	"errors"
+	"io"
+	"os"
+	"testing"
+	"time"
+)
+
+func closeShellInputTestFile(t *testing.T, file *os.File) {
+	t.Helper()
+	if err := file.Close(); err != nil {
+		t.Errorf("close %s: %v", file.Name(), err)
+	}
+}
+
+func TestCancellableShellInputWakesOnTunnelClose(t *testing.T) {
+	readFile, writeFile, err := os.Pipe()
+	if err != nil {
+		t.Fatalf("create stdin pipe: %v", err)
+	}
+	t.Cleanup(func() { closeShellInputTestFile(t, readFile) })
+	t.Cleanup(func() { closeShellInputTestFile(t, writeFile) })
+
+	input, err := newCancellableShellInput(readFile, newFilterReader(readFile))
+	if err != nil {
+		t.Fatalf("prepare cancellable stdin: %v", err)
+	}
+	t.Cleanup(func() {
+		if err := input.Close(); err != nil {
+			t.Errorf("close cancellable stdin: %v", err)
+		}
+	})
+
+	done := make(chan struct{})
+	type readResult struct {
+		n            int
+		err          error
+		tunnelClosed bool
+	}
+	readDone := make(chan readResult, 1)
+	go func() {
+		n, tunnelClosed, err := input.Read(make([]byte, 16), done)
+		readDone <- readResult{n: n, err: err, tunnelClosed: tunnelClosed}
+	}()
+
+	select {
+	case result := <-readDone:
+		t.Fatalf("stdin Read returned before data or tunnel close: %+v", result)
+	case <-time.After(50 * time.Millisecond):
+	}
+
+	close(done)
+	select {
+	case result := <-readDone:
+		if result.n != 0 || result.err != nil || !result.tunnelClosed {
+			t.Fatalf("stdin Read after tunnel close = %+v, want n=0 err=nil tunnelClosed=true", result)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("stdin Read did not wake when the tunnel closed")
+	}
+}
+
+func TestCancellableShellInputReportsPipeEOF(t *testing.T) {
+	readFile, writeFile, err := os.Pipe()
+	if err != nil {
+		t.Fatalf("create stdin pipe: %v", err)
+	}
+	t.Cleanup(func() { closeShellInputTestFile(t, readFile) })
+	if err := writeFile.Close(); err != nil {
+		t.Fatalf("close stdin pipe writer: %v", err)
+	}
+
+	input, err := newCancellableShellInput(readFile, newFilterReader(readFile))
+	if err != nil {
+		t.Fatalf("prepare cancellable stdin: %v", err)
+	}
+	t.Cleanup(func() {
+		if err := input.Close(); err != nil {
+			t.Errorf("close cancellable stdin: %v", err)
+		}
+	})
+
+	n, tunnelClosed, err := input.Read(make([]byte, 16), make(chan struct{}))
+	if n != 0 || tunnelClosed || !errors.Is(err, io.EOF) {
+		t.Fatalf("stdin Read after pipe EOF = n=%d tunnelClosed=%v err=%v, want n=0 tunnelClosed=false err=EOF", n, tunnelClosed, err)
+	}
+}
+
+func TestCancellableShellInputReadsRegularFile(t *testing.T) {
+	file, err := os.CreateTemp(t.TempDir(), "shell-stdin-*")
+	if err != nil {
+		t.Fatalf("create stdin file: %v", err)
+	}
+	t.Cleanup(func() { closeShellInputTestFile(t, file) })
+
+	const inputData = "whoami\n"
+	if _, err := file.WriteString(inputData); err != nil {
+		t.Fatalf("write stdin file: %v", err)
+	}
+	if _, err := file.Seek(0, io.SeekStart); err != nil {
+		t.Fatalf("rewind stdin file: %v", err)
+	}
+
+	input, err := newCancellableShellInput(file, newFilterReader(file))
+	if err != nil {
+		t.Fatalf("prepare cancellable stdin: %v", err)
+	}
+	t.Cleanup(func() {
+		if err := input.Close(); err != nil {
+			t.Errorf("close cancellable stdin: %v", err)
+		}
+	})
+
+	data := make([]byte, len(inputData))
+	n, tunnelClosed, err := input.Read(data, make(chan struct{}))
+	if err != nil {
+		t.Fatalf("read stdin file: %v", err)
+	}
+	if tunnelClosed {
+		t.Fatal("stdin file read reported a closed tunnel")
+	}
+	if got := string(data[:n]); got != inputData {
+		t.Fatalf("stdin file data = %q, want %q", got, inputData)
+	}
+}

client/command/shell/input_unix.go

@@ -0,0 +1,80 @@
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+
+package shell
+
+import (
+	"errors"
+	"io"
+	"os"
+	"sync"
+
+	"golang.org/x/sys/unix"
+)
+
+const shellInputPollMilliseconds = 100
+
+type cancellableShellInput struct {
+	reader        io.Reader
+	fd            uintptr
+	originalFlags int
+	flagsChanged  bool
+	restoreOnce   sync.Once
+	restoreErr    error
+}
+
+func newCancellableShellInput(file *os.File, reader io.Reader) (*cancellableShellInput, error) {
+	flags, err := unix.FcntlInt(file.Fd(), unix.F_GETFL, 0)
+	if err != nil {
+		return nil, err
+	}
+
+	input := &cancellableShellInput{
+		reader:        reader,
+		fd:            file.Fd(),
+		originalFlags: flags,
+	}
+	if flags&unix.O_NONBLOCK == 0 {
+		if _, err := unix.FcntlInt(file.Fd(), unix.F_SETFL, flags|unix.O_NONBLOCK); err != nil {
+			return nil, err
+		}
+		input.flagsChanged = true
+	}
+	return input, nil
+}
+
+func (s *cancellableShellInput) Read(data []byte, done <-chan struct{}) (int, bool, error) {
+	pollFDs := []unix.PollFd{{Fd: int32(s.fd), Events: unix.POLLIN}}
+	for {
+		select {
+		case <-done:
+			return 0, true, nil
+		default:
+		}
+
+		ready, err := unix.Poll(pollFDs, shellInputPollMilliseconds)
+		if errors.Is(err, unix.EINTR) {
+			continue
+		}
+		if err != nil {
+			return 0, false, err
+		}
+		if ready == 0 {
+			continue
+		}
+
+		n, err := s.reader.Read(data)
+		if errors.Is(err, unix.EAGAIN) || errors.Is(err, unix.EWOULDBLOCK) {
+			continue
+		}
+		return n, false, err
+	}
+}
+
+func (s *cancellableShellInput) Close() error {
+	s.restoreOnce.Do(func() {
+		if s.flagsChanged {
+			_, s.restoreErr = unix.FcntlInt(s.fd, unix.F_SETFL, s.originalFlags)
+		}
+	})
+	return s.restoreErr
+}

client/command/shell/input_unix_test.go

@@ -0,0 +1,66 @@
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+
+package shell
+
+import (
+	"os"
+	"testing"
+	"time"
+
+	"golang.org/x/sys/unix"
+)
+
+func TestCancellableShellInputRestoresFileFlags(t *testing.T) {
+	reader, writer, err := os.Pipe()
+	if err != nil {
+		t.Fatalf("create input pipe: %v", err)
+	}
+	t.Cleanup(func() { closeShellInputTestFile(t, reader) })
+	t.Cleanup(func() { closeShellInputTestFile(t, writer) })
+
+	originalFlags, err := unix.FcntlInt(reader.Fd(), unix.F_GETFL, 0)
+	if err != nil {
+		t.Fatalf("read original input flags: %v", err)
+	}
+	input, err := newCancellableShellInput(reader, reader)
+	if err != nil {
+		t.Fatalf("prepare cancellable input: %v", err)
+	}
+
+	type readResult struct {
+		err    error
+		closed bool
+	}
+	done := make(chan struct{})
+	result := make(chan readResult, 1)
+	go func() {
+		_, closed, err := input.Read(make([]byte, 32), done)
+		result <- readResult{err: err, closed: closed}
+	}()
+
+	select {
+	case got := <-result:
+		t.Fatalf("input read returned before data or close: %+v", got)
+	case <-time.After(50 * time.Millisecond):
+	}
+	close(done)
+	select {
+	case got := <-result:
+		if got.err != nil || !got.closed {
+			t.Fatalf("input read after close = %+v, want closed without error", got)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("input read did not wake after tunnel close")
+	}
+
+	if err := input.Close(); err != nil {
+		t.Fatalf("restore input flags: %v", err)
+	}
+	restoredFlags, err := unix.FcntlInt(reader.Fd(), unix.F_GETFL, 0)
+	if err != nil {
+		t.Fatalf("read restored input flags: %v", err)
+	}
+	if restoredFlags != originalFlags {
+		t.Fatalf("restored input flags = %#x, want %#x", restoredFlags, originalFlags)
+	}
+}

client/command/shell/input_windows.go

@@ -0,0 +1,204 @@
+//go:build windows
+
+package shell
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"runtime"
+	"time"
+	"unsafe"
+
+	"golang.org/x/sys/windows"
+)
+
+const shellInputWaitMilliseconds = 100
+
+var (
+	cancelSynchronousIO = windows.NewLazySystemDLL("kernel32.dll").NewProc("CancelSynchronousIo")
+	peekNamedPipe       = windows.NewLazySystemDLL("kernel32.dll").NewProc("PeekNamedPipe")
+)
+
+type cancellableShellInput struct {
+	reader    io.Reader
+	handle    windows.Handle
+	isConsole bool
+	isPipe    bool
+}
+
+func newCancellableShellInput(file *os.File, reader io.Reader) (*cancellableShellInput, error) {
+	handle := windows.Handle(file.Fd())
+	fileType, err := windows.GetFileType(handle)
+	if err != nil {
+		return nil, err
+	}
+	var consoleMode uint32
+	return &cancellableShellInput{
+		reader:    reader,
+		handle:    handle,
+		isConsole: windows.GetConsoleMode(handle, &consoleMode) == nil,
+		isPipe:    fileType == windows.FILE_TYPE_PIPE,
+	}, nil
+}
+
+func (s *cancellableShellInput) Read(data []byte, done <-chan struct{}) (int, bool, error) {
+	select {
+	case <-done:
+		return 0, true, nil
+	default:
+	}
+
+	if s.isPipe {
+		return s.readPipe(data, done)
+	}
+	if !s.isConsole {
+		n, err := s.reader.Read(data)
+		return n, false, err
+	}
+
+	for {
+		select {
+		case <-done:
+			return 0, true, nil
+		default:
+		}
+
+		event, err := windows.WaitForSingleObject(s.handle, shellInputWaitMilliseconds)
+		if err != nil {
+			return 0, false, err
+		}
+		switch event {
+		case windows.WAIT_OBJECT_0:
+			select {
+			case <-done:
+				return 0, true, nil
+			default:
+			}
+			return s.readConsole(data, done)
+		case uint32(windows.WAIT_TIMEOUT):
+			continue
+		default:
+			return 0, false, fmt.Errorf("unexpected stdin wait result 0x%x", event)
+		}
+	}
+}
+
+// WaitForSingleObject does not reliably indicate that a pipe read will
+// complete. PeekNamedPipe lets redirected stdin remain cancellable without
+// starting an overlapped os.File.Read that CancelSynchronousIo cannot stop.
+func (s *cancellableShellInput) readPipe(data []byte, done <-chan struct{}) (int, bool, error) {
+	ticker := time.NewTicker(shellInputWaitMilliseconds * time.Millisecond)
+	defer ticker.Stop()
+
+	for {
+		available, err := pipeBytesAvailable(s.handle)
+		if errors.Is(err, windows.ERROR_BROKEN_PIPE) ||
+			errors.Is(err, windows.ERROR_NO_DATA) ||
+			errors.Is(err, windows.ERROR_PIPE_NOT_CONNECTED) {
+			return 0, false, io.EOF
+		}
+		if err != nil {
+			return 0, false, err
+		}
+		if available > 0 {
+			n, readErr := s.reader.Read(data)
+			return n, false, readErr
+		}
+
+		select {
+		case <-done:
+			return 0, true, nil
+		case <-ticker.C:
+		}
+	}
+}
+
+func pipeBytesAvailable(handle windows.Handle) (uint32, error) {
+	var available uint32
+	result, _, err := peekNamedPipe.Call(
+		uintptr(handle),
+		0,
+		0,
+		0,
+		uintptr(unsafe.Pointer(&available)),
+		0,
+	)
+	if result == 0 {
+		return 0, err
+	}
+	return available, nil
+}
+
+// A console input handle can be signaled by window, focus, mouse, or key-up
+// events that do not make ReadFile return. Keep the synchronous read on a
+// known OS thread so tunnel shutdown can cancel that exact read without
+// leaving a background stdin reader behind to steal input from the REPL.
+func (s *cancellableShellInput) readConsole(data []byte, done <-chan struct{}) (int, bool, error) {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	thread, err := windows.OpenThread(windows.THREAD_TERMINATE, false, windows.GetCurrentThreadId())
+	if err != nil {
+		return 0, false, err
+	}
+	defer func() {
+		_ = windows.CloseHandle(thread)
+	}()
+
+	readFinished := make(chan struct{})
+	cancelFinished := make(chan error, 1)
+	go func() {
+		select {
+		case <-done:
+			cancelFinished <- cancelThreadSynchronousIO(thread, readFinished)
+		case <-readFinished:
+			cancelFinished <- nil
+		}
+	}()
+
+	n, readErr := s.reader.Read(data)
+	close(readFinished)
+	cancelErr := <-cancelFinished
+	if cancelErr != nil {
+		return n, false, cancelErr
+	}
+
+	select {
+	case <-done:
+		if n == 0 && (readErr == nil || errors.Is(readErr, windows.ERROR_OPERATION_ABORTED)) {
+			return 0, true, nil
+		}
+	default:
+	}
+	return n, false, readErr
+}
+
+func cancelThreadSynchronousIO(thread windows.Handle, readFinished <-chan struct{}) error {
+	ticker := time.NewTicker(time.Millisecond)
+	defer ticker.Stop()
+
+	for {
+		result, _, err := cancelSynchronousIO.Call(uintptr(thread))
+		if result != 0 {
+			return nil
+		}
+		if !errors.Is(err, windows.ERROR_NOT_FOUND) {
+			return err
+		}
+
+		// The close signal can race just ahead of the synchronous read. Retry
+		// ERROR_NOT_FOUND until the read starts or finishes so no console reader
+		// is left behind to steal input from the REPL.
+		select {
+		case <-readFinished:
+			return nil
+		case <-ticker.C:
+		}
+	}
+}
+
+func (s *cancellableShellInput) Close() error {
+	return nil
+}

client/command/shell/ioloop.go

@@ -8,59 +8,43 @@ import (
 	"os"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/bishopfox/sliver/client/console"
 	"github.com/bishopfox/sliver/client/core"
 )
 
+const (
+	shellEscapeByte           = byte(0x1d) // Ctrl-]
+	stdinBufSize              = 32 * 1024
+	stdinQueueDepth           = 128
+	finalInputDeliveryTimeout = 2 * time.Second
+)
+
+type shellInputChunk struct {
+	data      []byte
+	delivered chan bool
+}
+
+type shellLineState struct {
+	lineBuf         []byte
+	inEscSeq        bool
+	caseInsensitive bool
+}
+
 // runAttachedIO forwards local stdin to a shell tunnel while attached to the shell.
 // It returns:
 // - detached=true when user hit escape (Ctrl-])
 // - closeRequested=true when user requested shell close (EOF/exit/logout)
-func runAttachedIO(tunnel *core.TunnelIO, con *console.SliverClient) (detached bool, closeRequested bool) {
+func runAttachedIO(tunnel *core.TunnelIO, con *console.SliverClient, remoteOS string) (detached bool, closeRequested bool) {
 	// We can't pipe stdin directly into the tunnel: if the gRPC tunnel send path blocks
 	// (network hang, server gone, etc.) tunnel.Write can block forever and "lock" the
 	// client in shell mode. Instead, buffer stdin locally and look for a local escape key.
-	const (
-		shellEscapeByte = byte(0x1d) // Ctrl-]
-		stdinBufSize    = 32 * 1024
-		stdinQueueDepth = 128
-	)
-
-	stdinQueue := make(chan []byte, stdinQueueDepth)
+	stdinQueue := make(chan shellInputChunk, stdinQueueDepth)
 	stopWriter := make(chan struct{})
 	var writerWG sync.WaitGroup
 	writerWG.Add(1)
-
-	go func() {
-		defer writerWG.Done()
-		defer func() {
-			// Tunnel teardown can race with writes (server-side close, disconnect, etc.).
-			// Don't let a send-on-closed-channel panic bring down the whole client.
-			if r := recover(); r != nil {
-				log.Printf("Shell tunnel writer stopped: %v", r)
-			}
-		}()
-
-		for {
-			select {
-			case <-stopWriter:
-				return
-			case data, ok := <-stdinQueue:
-				if !ok {
-					return
-				}
-				if len(data) == 0 {
-					continue
-				}
-				select {
-				case <-stopWriter:
-					return
-				case tunnel.Send <- data:
-				}
-			}
-		}
-	}()
+	go runShellInputWriter(tunnel, stdinQueue, stopWriter, &writerWG)
 
 	defer func() {
 		close(stopWriter)
@@ -68,68 +52,33 @@ func runAttachedIO(tunnel *core.TunnelIO, con *console.SliverClient) (detached b
 		writerWG.Wait()
 	}()
 
-	stdin := newFilterReader(os.Stdin)
+	stdin, err := newCancellableShellInput(os.Stdin, newFilterReader(os.Stdin))
+	if err != nil {
+		con.PrintErrorf("Failed to prepare shell input: %s\n", err)
+		return false, true
+	}
+	defer func() {
+		if err := stdin.Close(); err != nil {
+			log.Printf("Failed to restore shell input state: %v", err)
+		}
+	}()
+
 	buf := make([]byte, stdinBufSize)
-	lineBuf := make([]byte, 0, 128)
-	inEscSeq := false
+	lineState := shellLineState{
+		lineBuf:         make([]byte, 0, 128),
+		caseInsensitive: remoteOS == "windows",
+	}
 	log.Printf("Reading from stdin (escape=Ctrl-]) ...")
 
 	for {
-		n, err := stdin.Read(buf)
+		n, tunnelClosed, err := stdin.Read(buf, tunnel.Done())
+		if tunnelClosed {
+			closeRequested = true
+			break
+		}
 		if n > 0 {
-			data := buf[:n]
-			if i := bytes.IndexByte(data, shellEscapeByte); i >= 0 {
-				if i > 0 {
-					// Best-effort: don't block stdin if the tunnel is wedged.
-					dataCopy := append([]byte(nil), data[:i]...)
-					select {
-					case stdinQueue <- dataCopy:
-					default:
-					}
-				}
-				detached = true
-				break
-			}
-
-			exitRequested := false
-			for _, b := range data {
-				if inEscSeq {
-					if b >= 0x40 && b <= 0x7e {
-						inEscSeq = false
-					}
-					continue
-				}
-
-				switch b {
-				case '\r', '\n':
-					line := strings.TrimSpace(string(lineBuf))
-					if line == "exit" || line == "logout" {
-						exitRequested = true
-					}
-					lineBuf = lineBuf[:0]
-				case 0x1b:
-					inEscSeq = true
-				case 0x08, 0x7f:
-					if len(lineBuf) > 0 {
-						lineBuf = lineBuf[:len(lineBuf)-1]
-					}
-				default:
-					// Keep printable bytes only; ignore control sequences (arrows, etc.).
-					if b >= 0x20 && b <= 0x7e {
-						lineBuf = append(lineBuf, b)
-					}
-				}
-			}
-
-			dataCopy := append([]byte(nil), data...)
-			select {
-			case stdinQueue <- dataCopy:
-			default:
-				// Drop input if the tunnel send path is blocked; still allow escape.
-			}
-
-			if exitRequested {
-				closeRequested = true
+			detached, closeRequested = forwardShellInput(buf[:n], &lineState, stdinQueue, tunnel.Done())
+			if detached || closeRequested {
 				break
 			}
 		}
@@ -146,3 +95,158 @@ func runAttachedIO(tunnel *core.TunnelIO, con *console.SliverClient) (detached b
 	bufio.NewWriter(os.Stdout).Flush()
 	return detached, closeRequested
 }
+
+func runShellInputWriter(tunnel *core.TunnelIO, stdinQueue <-chan shellInputChunk, stop <-chan struct{}, writerWG *sync.WaitGroup) {
+	defer writerWG.Done()
+	defer recoverShellInputWriter()
+
+	for {
+		select {
+		case <-stop:
+			return
+		case <-tunnel.Done():
+			return
+		case chunk, ok := <-stdinQueue:
+			if !ok || !deliverShellInputChunk(tunnel, chunk, stop) {
+				return
+			}
+		}
+	}
+}
+
+func recoverShellInputWriter() {
+	// Tunnel teardown can race with writes (server-side close, disconnect, etc.).
+	// Don't let a send-on-closed-channel panic bring down the whole client.
+	if r := recover(); r != nil {
+		log.Printf("Shell tunnel writer stopped: %v", r)
+	}
+}
+
+func deliverShellInputChunk(tunnel *core.TunnelIO, chunk shellInputChunk, stop <-chan struct{}) bool {
+	if len(chunk.data) == 0 {
+		notifyShellInputDelivery(chunk.delivered, true)
+		return true
+	}
+
+	delivered := false
+	select {
+	case <-stop:
+	case <-tunnel.Done():
+	case tunnel.Send <- chunk.data:
+		delivered = true
+	}
+	notifyShellInputDelivery(chunk.delivered, delivered)
+	return delivered
+}
+
+func notifyShellInputDelivery(delivery chan<- bool, delivered bool) {
+	if delivery != nil {
+		delivery <- delivered
+	}
+}
+
+func forwardShellInput(data []byte, lineState *shellLineState, stdinQueue chan<- shellInputChunk, tunnelDone <-chan struct{}) (detached bool, closeRequested bool) {
+	if i := bytes.IndexByte(data, shellEscapeByte); i >= 0 {
+		if i > 0 {
+			queueShellInputBestEffort(stdinQueue, data[:i])
+		}
+		return true, false
+	}
+
+	exitRequested := lineState.exitRequested(data)
+	if exitRequested {
+		deliverFinalShellInput(stdinQueue, data, tunnelDone)
+		return false, true
+	}
+
+	queueShellInputBestEffort(stdinQueue, data)
+	return false, false
+}
+
+func queueShellInputBestEffort(stdinQueue chan<- shellInputChunk, data []byte) {
+	dataCopy := append([]byte(nil), data...)
+	select {
+	case stdinQueue <- shellInputChunk{data: dataCopy}:
+	default:
+		// Drop input if the tunnel send path is blocked; still allow escape.
+	}
+}
+
+func deliverFinalShellInput(stdinQueue chan<- shellInputChunk, data []byte, tunnelDone <-chan struct{}) {
+	delivered := make(chan bool, 1)
+	chunk := shellInputChunk{
+		data:      append([]byte(nil), data...),
+		delivered: delivered,
+	}
+
+	queueTimer := time.NewTimer(finalInputDeliveryTimeout)
+	queued := false
+	select {
+	case stdinQueue <- chunk:
+		queued = true
+	case <-tunnelDone:
+	case <-queueTimer.C:
+	}
+	queueTimer.Stop()
+	if !queued {
+		return
+	}
+
+	deliveryTimer := time.NewTimer(finalInputDeliveryTimeout)
+	select {
+	case <-delivered:
+	case <-tunnelDone:
+	case <-deliveryTimer.C:
+	}
+	deliveryTimer.Stop()
+}
+
+func (s *shellLineState) exitRequested(data []byte) bool {
+	exitRequested := false
+	for _, b := range data {
+		if s.inEscSeq {
+			if b >= 0x40 && b <= 0x7e {
+				s.inEscSeq = false
+			}
+			continue
+		}
+
+		switch b {
+		case '\r', '\n':
+			if isShellExitCommand(string(s.lineBuf), s.caseInsensitive) {
+				exitRequested = true
+			}
+			s.lineBuf = s.lineBuf[:0]
+		case 0x1b:
+			s.inEscSeq = true
+		case 0x08, 0x7f:
+			if len(s.lineBuf) > 0 {
+				s.lineBuf = s.lineBuf[:len(s.lineBuf)-1]
+			}
+		default:
+			// Keep printable bytes only; ignore control sequences (arrows, etc.).
+			if b >= 0x20 && b <= 0x7e {
+				s.lineBuf = append(s.lineBuf, b)
+			}
+		}
+	}
+	return exitRequested
+}
+
+func isShellExitCommand(line string, caseInsensitive bool) bool {
+	fields := strings.Fields(line)
+	if len(fields) == 0 {
+		return false
+	}
+
+	command := fields[0]
+	if caseInsensitive {
+		command = strings.ToLower(command)
+	}
+	switch command {
+	case "exit", "logout":
+		return true
+	default:
+		return false
+	}
+}

client/command/shell/ioloop_test.go

@@ -0,0 +1,153 @@
+package shell
+
+import (
+	"bytes"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/bishopfox/sliver/client/console"
+	"github.com/bishopfox/sliver/client/core"
+)
+
+func TestIsShellExitCommand(t *testing.T) {
+	tests := []struct {
+		name    string
+		line    string
+		windows bool
+		want    bool
+	}{
+		{name: "exit", line: "exit", want: true},
+		{name: "unix uppercase is not exit", line: " EXIT ", want: false},
+		{name: "windows case insensitive exit", line: " EXIT ", windows: true, want: true},
+		{name: "exit status", line: "exit 42", want: true},
+		{name: "cmd exit arguments", line: "Exit /B 1", windows: true, want: true},
+		{name: "logout", line: "logout", want: true},
+		{name: "windows logout arguments", line: "LoGoUt --force", windows: true, want: true},
+		{name: "empty", line: "  ", want: false},
+		{name: "exit prefix", line: "exiting", want: false},
+		{name: "logout prefix", line: "logout-now", want: false},
+		{name: "exit later in line", line: "echo exit", want: false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := isShellExitCommand(tt.line, tt.windows); got != tt.want {
+				t.Fatalf("isShellExitCommand(%q, %v) = %v, want %v", tt.line, tt.windows, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestForwardShellInputDetachesAtEscape(t *testing.T) {
+	stdinQueue := make(chan shellInputChunk, 1)
+	tunnelDone := make(chan struct{})
+	lineState := &shellLineState{}
+
+	detached, closeRequested := forwardShellInput(
+		[]byte("whoami\x1dignored"),
+		lineState,
+		stdinQueue,
+		tunnelDone,
+	)
+	if !detached || closeRequested {
+		t.Fatalf("forwardShellInput result = detached %v, close requested %v", detached, closeRequested)
+	}
+
+	select {
+	case chunk := <-stdinQueue:
+		if !bytes.Equal(chunk.data, []byte("whoami")) {
+			t.Fatalf("queued input = %q, want only data before escape", chunk.data)
+		}
+	default:
+		t.Fatal("input before escape was not queued")
+	}
+}
+
+func TestShellLineStatePersistsAcrossChunksAndBackspace(t *testing.T) {
+	lineState := &shellLineState{}
+	if lineState.exitRequested([]byte("exiz")) {
+		t.Fatal("partial input unexpectedly requested exit")
+	}
+	if lineState.exitRequested([]byte{'\b'}) {
+		t.Fatal("backspace unexpectedly requested exit")
+	}
+	if !lineState.exitRequested([]byte("t\n")) {
+		t.Fatal("corrected exit command split across chunks did not request exit")
+	}
+	if lineState.exitRequested([]byte("echo still attached\n")) {
+		t.Fatal("line state was not reset after the exit command newline")
+	}
+}
+
+func TestRunAttachedIODeliversExitBeforeReturning(t *testing.T) {
+	readFile, writeFile, err := os.Pipe()
+	if err != nil {
+		t.Fatalf("create stdin pipe: %v", err)
+	}
+	t.Cleanup(func() {
+		closeTestResource(t, "stdin reader", readFile.Close)
+	})
+	t.Cleanup(func() {
+		closeTestResource(t, "stdin writer", writeFile.Close)
+	})
+
+	originalStdin := os.Stdin
+	os.Stdin = readFile
+	defer func() { os.Stdin = originalStdin }()
+
+	tunnel := core.NewTunnelIO(91, "session")
+	if err := tunnel.Open(); err != nil {
+		t.Fatalf("open tunnel: %v", err)
+	}
+	t.Cleanup(func() {
+		closeTestResource(t, "tunnel", tunnel.Close)
+	})
+
+	con := &console.SliverClient{}
+	received := make(chan []byte, 1)
+	go func() {
+		select {
+		case data := <-tunnel.Send:
+			received <- append([]byte(nil), data...)
+		case <-tunnel.Done():
+		}
+	}()
+
+	type ioResult struct {
+		detached bool
+		closed   bool
+	}
+	result := make(chan ioResult, 1)
+	go func() {
+		detached, closed := runAttachedIO(tunnel, con, "linux")
+		result <- ioResult{detached: detached, closed: closed}
+	}()
+	if _, err := writeFile.Write([]byte("exit\n")); err != nil {
+		t.Fatalf("write test stdin: %v", err)
+	}
+
+	select {
+	case data := <-received:
+		if !bytes.Equal(data, []byte("exit\n")) {
+			t.Fatalf("delivered input = %q, want exit command", data)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("exit command was not delivered before attached I/O returned")
+	}
+	select {
+	case got := <-result:
+		if got.detached || !got.closed {
+			t.Fatalf("runAttachedIO result = %+v, want close requested", got)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("runAttachedIO did not return after delivering exit")
+	}
+}
+
+func closeTestResource(t *testing.T, name string, closeFn func() error) {
+	t.Helper()
+	if err := closeFn(); err != nil {
+		t.Errorf("close test %s: %v", name, err)
+	}
+}

client/command/shell/shell.go

@@ -37,8 +37,10 @@ import (
 )
 
 const (
-	darwin = "darwin"
-	linux  = "linux"
+	darwin            = "darwin"
+	linux             = "linux"
+	shellBindTimeout  = 5 * time.Second
+	shellCloseTimeout = 5 * time.Second
 )
 
 type shellResult int
@@ -262,12 +264,12 @@ func runInteractive(cmd *cobra.Command, shellPath string, noPty bool, con *conso
 
 	if existing == nil {
 		// Create an RPC tunnel, then start it before binding the shell to the newly created tunnel.
-		ctxTunnel, cancelTunnel := context.WithCancel(context.Background())
-		defer cancelTunnel()
+		ctxTunnel, cancelTunnel := con.GrpcContext(cmd)
 
 		rpcTunnel, err := con.Rpc.CreateTunnel(ctxTunnel, &sliverpb.Tunnel{
 			SessionID: session.ID,
 		})
+		cancelTunnel()
 		if err != nil {
 			con.PrintErrorf("%s\n", err)
 			return shellAttachFailed
@@ -276,6 +278,20 @@ func runInteractive(cmd *cobra.Command, shellPath string, noPty bool, con *conso
 
 		// Start() takes an RPC tunnel and creates a local Reader/Writer tunnel object.
 		tunnel = core.GetTunnels().Start(rpcTunnel.TunnelID, rpcTunnel.SessionID)
+		bindTimer := time.NewTimer(shellBindTimeout)
+		select {
+		case <-tunnel.Bound():
+			bindTimer.Stop()
+		case <-tunnel.Done():
+			bindTimer.Stop()
+			con.PrintErrorf("Shell tunnel closed before it was bound\n")
+			go backgroundCloseShell(con, tunnel.ID, session.ID)
+			return shellAttachFailed
+		case <-bindTimer.C:
+			con.PrintErrorf("Timed out binding shell tunnel\n")
+			go backgroundCloseShell(con, tunnel.ID, session.ID)
+			return shellAttachFailed
+		}
 
 		var rows uint32
 		var cols uint32
@@ -290,7 +306,8 @@ func runInteractive(cmd *cobra.Command, shellPath string, noPty bool, con *conso
 			}
 		}
 
-		shell, err := con.Rpc.Shell(context.Background(), &sliverpb.ShellReq{
+		ctxShell, cancelShell := con.GrpcContext(cmd)
+		shell, err := con.Rpc.Shell(ctxShell, &sliverpb.ShellReq{
 			Request:   con.ActiveTarget.Request(cmd),
 			Path:      shellPath,
 			EnablePTY: !noPty,
@@ -298,9 +315,10 @@ func runInteractive(cmd *cobra.Command, shellPath string, noPty bool, con *conso
 			Cols:      cols,
 			TunnelID:  tunnel.ID,
 		})
+		cancelShell()
 		if err != nil {
 			con.PrintErrorf("%s\n", err)
-			core.GetTunnels().Close(tunnel.ID)
+			go backgroundCloseShell(con, tunnel.ID, session.ID)
 			return shellAttachFailed
 		}
 		if shell.Response != nil && shell.Response.Err != "" {
@@ -363,7 +381,7 @@ func runInteractive(cmd *cobra.Command, shellPath string, noPty bool, con *conso
 		}()
 	}
 
-	detached, _ := runAttachedIO(tunnel, con)
+	detached, _ := runAttachedIO(tunnel, con, session.OS)
 	if detached {
 		managed.SetOutput(io.Discard)
 		managed.setState(shellStateDetached)
@@ -393,7 +411,9 @@ func closeShellTunnel(con *console.SliverClient, tunnelID uint64, sessionID stri
 		return nil
 	}
 
-	_, err := con.Rpc.CloseTunnel(context.Background(), &sliverpb.Tunnel{
+	ctx, cancel := context.WithTimeout(context.Background(), shellCloseTimeout)
+	defer cancel()
+	_, err := con.Rpc.CloseTunnel(ctx, &sliverpb.Tunnel{
 		TunnelID:  tunnelID,
 		SessionID: sessionID,
 	})
@@ -413,6 +433,7 @@ func requestRemoteShellExit(tunnel *core.TunnelIO) {
 				}
 			}()
 			select {
+			case <-tunnel.Done():
 			case tunnel.Send <- append([]byte(nil), data...):
 			default:
 			}

client/command/shell/shell_test.go

@@ -0,0 +1,41 @@
+package shell
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/bishopfox/sliver/client/console"
+	"github.com/bishopfox/sliver/protobuf/commonpb"
+	"github.com/bishopfox/sliver/protobuf/rpcpb"
+	"github.com/bishopfox/sliver/protobuf/sliverpb"
+	"google.golang.org/grpc"
+)
+
+type closeTunnelTestRPC struct {
+	rpcpb.SliverRPCClient
+	deadline time.Time
+}
+
+func (r *closeTunnelTestRPC) CloseTunnel(ctx context.Context, _ *sliverpb.Tunnel, _ ...grpc.CallOption) (*commonpb.Empty, error) {
+	deadline, ok := ctx.Deadline()
+	if ok {
+		r.deadline = deadline
+	}
+	return &commonpb.Empty{}, nil
+}
+
+func TestCloseShellTunnelUsesBoundedContext(t *testing.T) {
+	rpc := &closeTunnelTestRPC{}
+	con := &console.SliverClient{Rpc: rpc}
+
+	if err := closeShellTunnel(con, 99, "session"); err != nil {
+		t.Fatalf("close shell tunnel: %v", err)
+	}
+	if rpc.deadline.IsZero() {
+		t.Fatal("CloseTunnel RPC context has no deadline")
+	}
+	if remaining := time.Until(rpc.deadline); remaining <= 0 || remaining > shellCloseTimeout {
+		t.Fatalf("CloseTunnel deadline is %v away, want within (0, %v]", remaining, shellCloseTimeout)
+	}
+}

client/command/sliver.go

@@ -38,6 +38,7 @@ import (
 	"github.com/bishopfox/sliver/client/command/info"
 	"github.com/bishopfox/sliver/client/command/kill"
 	"github.com/bishopfox/sliver/client/command/network"
+	"github.com/bishopfox/sliver/client/command/opfor"
 	"github.com/bishopfox/sliver/client/command/pivots"
 	"github.com/bishopfox/sliver/client/command/portfwd"
 	"github.com/bishopfox/sliver/client/command/privilege"
@@ -81,6 +82,7 @@ func SliverCommands(con *client.SliverClient) console.Commands {
 		// [ Core ]
 		bind(consts.SliverCoreHelpGroup,
 			ai.Commands,
+			opfor.Commands,
 			docscmd.Commands,
 			reconfig.Commands,
 			// sessions.Commands,
@@ -173,6 +175,9 @@ func SliverCommands(con *client.SliverClient) console.Commands {
 			}
 		}
 
+		// Rehydrate CNA-defined Beacon aliases from the persistent OPFOR runtime.
+		opfor.RegisterCommands(sliver, con)
+
 		// [ Post-command declaration setup ]----------------------------------------
 
 		// Everything below this line should preferably not be any command binding

client/console/connection.go

@@ -61,7 +61,7 @@ func (con *SliverClient) SetConnection(rpc rpcpb.SliverRPCClient, grpcConn *grpc
 	con.BeaconTaskCallbacksMutex.Unlock()
 	con.ActiveTarget.Set(nil, nil)
 
-	if details != nil && details.Config != nil && details.Config.WG != nil {
+	if useDedicatedCommandConnection(details) {
 		con.backgroundDedicated = true
 		commandRPC, commandConn, err := transport.MTLSConnect(details.Config)
 		if err != nil {
@@ -110,6 +110,12 @@ func (con *SliverClient) SetConnection(rpc rpcpb.SliverRPCClient, grpcConn *grpc
 	return nil
 }
 
+func useDedicatedCommandConnection(details *ConnectionDetails) bool {
+	return details != nil &&
+		details.Config != nil &&
+		transport.MultiplayerConnectUsesWireGuard(details.Config)
+}
+
 // CloseConnection stops background loops and closes the current gRPC connection.
 func (con *SliverClient) CloseConnection() error {
 	con.connMu.Lock()

client/console/connection_test.go

@@ -0,0 +1,62 @@
+package console
+
+import (
+	"testing"
+
+	"github.com/bishopfox/sliver/client/assets"
+	"github.com/bishopfox/sliver/client/transport"
+)
+
+func TestDedicatedCommandConnectionUsesEffectiveWireGuardMode(t *testing.T) {
+	transport.SetMultiplayerConnectMode(transport.MultiplayerConnectAuto)
+	t.Cleanup(func() {
+		transport.SetMultiplayerConnectMode(transport.MultiplayerConnectAuto)
+	})
+
+	legacyDetails := &ConnectionDetails{Config: completeWireGuardClientConfig(false)}
+	if useDedicatedCommandConnection(legacyDetails) {
+		t.Fatal("expected auto mode to keep an unmarked legacy config on direct mTLS")
+	}
+
+	enabledDetails := &ConnectionDetails{Config: completeWireGuardClientConfig(true)}
+	if !useDedicatedCommandConnection(enabledDetails) {
+		t.Fatal("expected auto mode to use a dedicated connection for an explicitly enabled config")
+	}
+
+	transport.SetMultiplayerConnectMode(transport.MultiplayerConnectEnableWG)
+	if !useDedicatedCommandConnection(legacyDetails) {
+		t.Fatal("expected force-enable mode to use a dedicated connection with a complete legacy config")
+	}
+
+	transport.SetMultiplayerConnectMode(transport.MultiplayerConnectDisableWG)
+	if useDedicatedCommandConnection(enabledDetails) {
+		t.Fatal("expected force-disable mode to keep an enabled config on direct mTLS")
+	}
+}
+
+func TestDedicatedCommandConnectionRejectsIncompleteEnabledConfig(t *testing.T) {
+	transport.SetMultiplayerConnectMode(transport.MultiplayerConnectAuto)
+	t.Cleanup(func() {
+		transport.SetMultiplayerConnectMode(transport.MultiplayerConnectAuto)
+	})
+
+	details := &ConnectionDetails{
+		Config: &assets.ClientConfig{
+			WG: &assets.ClientWGConfig{Enabled: true},
+		},
+	}
+	if useDedicatedCommandConnection(details) {
+		t.Fatal("expected an incomplete enabled config not to select a dedicated connection")
+	}
+}
+
+func completeWireGuardClientConfig(enabled bool) *assets.ClientConfig {
+	return &assets.ClientConfig{
+		WG: &assets.ClientWGConfig{
+			Enabled:          enabled,
+			ServerPubKey:     "server-pub",
+			ClientPrivateKey: "client-priv",
+			ClientIP:         "100.64.0.2",
+		},
+	}
+}

client/console/console.go

@@ -1147,6 +1147,7 @@ func (con *SliverClient) ExposeCommands() {
 	case con.ActiveTarget.session != nil:
 		session := con.ActiveTarget.session
 		filters = append(filters, consts.BeaconCmdsFilter)
+		filters = append(filters, consts.NativeExtensionTargetFilter(session.OS, session.Arch))
 
 		// Operating system
 		if session.OS != "windows" {
@@ -1161,6 +1162,7 @@ func (con *SliverClient) ExposeCommands() {
 	case con.ActiveTarget.beacon != nil:
 		beacon := con.ActiveTarget.beacon
 		filters = append(filters, consts.SessionCmdsFilter)
+		filters = append(filters, consts.NativeExtensionTargetFilter(beacon.OS, beacon.Arch))
 
 		// Operating system
 		if beacon.OS != "windows" {

client/constants/constants.go

@@ -231,6 +231,7 @@ const (
 	AIStr       = "ai"
 	AIConfigStr = "ai-config"
 	DocsStr     = "docs"
+	OpforStr    = "opfor"
 	CatStr      = "cat"
 	EditStr     = "edit"
 	HexEditStr  = "hex-edit"
@@ -363,8 +364,53 @@ const (
 	BeaconCmdsFilter    = "beacon"
 	WindowsCmdsFilter   = "windows"
 	WireguardCmdsFilter = "wireguard"
+
+	NativeExtensionUnsupportedTargetFilter = "native-extension:unsupported"
+	NativeExtensionDarwinAMD64Filter       = "native-extension:darwin/amd64"
+	NativeExtensionDarwinARM64Filter       = "native-extension:darwin/arm64"
+	NativeExtensionLinux386Filter          = "native-extension:linux/386"
+	NativeExtensionLinuxAMD64Filter        = "native-extension:linux/amd64"
+	NativeExtensionLinuxARM64Filter        = "native-extension:linux/arm64"
+	NativeExtensionWindows386Filter        = "native-extension:windows/386"
+	NativeExtensionWindowsAMD64Filter      = "native-extension:windows/amd64"
+	NativeExtensionWindowsARM64Filter      = "native-extension:windows/arm64"
 )
 
+// NativeExtensionTarget identifies a GOOS/GOARCH pair supported by native
+// implant extensions and the command filter associated with that exact pair.
+type NativeExtensionTarget struct {
+	GOOS   string
+	GOARCH string
+	Filter string
+}
+
+var nativeExtensionTargets = [8]NativeExtensionTarget{
+	{GOOS: "darwin", GOARCH: "amd64", Filter: NativeExtensionDarwinAMD64Filter},
+	{GOOS: "darwin", GOARCH: "arm64", Filter: NativeExtensionDarwinARM64Filter},
+	{GOOS: "linux", GOARCH: "386", Filter: NativeExtensionLinux386Filter},
+	{GOOS: "linux", GOARCH: "amd64", Filter: NativeExtensionLinuxAMD64Filter},
+	{GOOS: "linux", GOARCH: "arm64", Filter: NativeExtensionLinuxARM64Filter},
+	{GOOS: "windows", GOARCH: "386", Filter: NativeExtensionWindows386Filter},
+	{GOOS: "windows", GOARCH: "amd64", Filter: NativeExtensionWindowsAMD64Filter},
+	{GOOS: "windows", GOARCH: "arm64", Filter: NativeExtensionWindowsARM64Filter},
+}
+
+// NativeExtensionTargets returns the supported native extension target matrix.
+func NativeExtensionTargets() [8]NativeExtensionTarget {
+	return nativeExtensionTargets
+}
+
+// NativeExtensionTargetFilter returns the filter for an exact supported target.
+// Unsupported pairs share a filter that hides all native extension commands.
+func NativeExtensionTargetFilter(goos string, goarch string) string {
+	for _, target := range nativeExtensionTargets {
+		if target.GOOS == goos && target.GOARCH == goarch {
+			return target.Filter
+		}
+	}
+	return NativeExtensionUnsupportedTargetFilter
+}
+
 // Creds (needed here to avoid recursive imports).
 const (
 	UserColonHashNewlineFormat = "user:hash" // username:hash\n

client/core/tunnel.go

@@ -41,8 +41,9 @@ func TunnelLoop(ctx context.Context, rpc rpcpb.SliverRPCClient) error {
 		return err
 	}
 
-	GetTunnels().SetStream(stream)
-	defer GetTunnels().SetStream(nil)
+	tunnels := GetTunnels()
+	streamGeneration := tunnels.SetStream(stream)
+	defer tunnels.CloseStream(streamGeneration)
 
 	for {
 		log.Printf("Waiting for TunnelData ...")
@@ -65,6 +66,14 @@ func TunnelLoop(ctx context.Context, rpc rpcpb.SliverRPCClient) error {
 		tunnel := GetTunnels().Get(incoming.TunnelID)
 
 		if tunnel != nil {
+			if !incoming.Closed && len(incoming.GetData()) == 0 {
+				// The server uses an empty frame to acknowledge that the client
+				// stream is bound to a newly created tunnel. It is control
+				// traffic, not data for the tunnel reader.
+				tunnel.markBound()
+				log.Printf("Received bind acknowledgement for tunnel %d", incoming.TunnelID)
+				continue
+			}
 			data := incoming.GetData()
 
 			log.Printf("This is data on tunnel %d: %s", tunnel.ID, data)

client/core/tunnel_io.go

@@ -26,6 +26,10 @@ import (
 	"sync"
 )
 
+const tunnelRecvBufferSize = 16
+
+var errClosedTunnel = errors.New("closed tunnel")
+
 // TunnelIO - Duplex data tunnel, compatible with both io.ReadWriter
 type TunnelIO struct {
 	ID        uint64
@@ -34,8 +38,12 @@ type TunnelIO struct {
 	Send chan []byte
 	Recv chan []byte
 
-	isOpen bool
-	mutex  *sync.RWMutex
+	done      chan struct{}
+	closeOnce sync.Once
+	bound     chan struct{}
+	boundOnce sync.Once
+	isOpen    bool
+	mutex     *sync.RWMutex
 }
 
 // NewTunnelIO - Single entry point for creating instance of new TunnelIO
@@ -46,9 +54,13 @@ func NewTunnelIO(tunnelID uint64, sessionID string) *TunnelIO {
 		ID:        tunnelID,
 		SessionID: sessionID,
 		Send:      make(chan []byte),
-		Recv:      make(chan []byte),
-		isOpen:    false,
-		mutex:     &sync.RWMutex{},
+		// A tunnel can receive its first frames before the command-specific
+		// reader is running. Keep that short startup burst from blocking the
+		// single client TunnelLoop while retaining bounded backpressure.
+		Recv:  make(chan []byte, tunnelRecvBufferSize),
+		done:  make(chan struct{}),
+		bound: make(chan struct{}),
+		mutex: &sync.RWMutex{},
 	}
 }
 
@@ -66,33 +78,58 @@ func (tun *TunnelIO) Write(data []byte) (int, error) {
 	log.Printf("Write %d bytes", n)
 	log.Printf("This bytes is: %s", dataCopy)
 
-	tun.Send <- dataCopy
+	select {
+	case <-tun.done:
+		return 0, io.EOF
+	default:
+	}
 
-	return n, nil
+	select {
+	case tun.Send <- dataCopy:
+		return n, nil
+	case <-tun.done:
+		return 0, io.EOF
+	}
 }
 
 // Read - Reader method for interface
 func (tun *TunnelIO) Read(data []byte) (int, error) {
-	recvData, ok := <-tun.Recv
-	if !ok {
+	// Prefer already queued output over the close signal so callers can drain
+	// the final frames before observing EOF.
+	select {
+	case recvData := <-tun.Recv:
+		return tun.copyRecvData(data, recvData), nil
+	default:
+	}
+
+	select {
+	case recvData := <-tun.Recv:
+		return tun.copyRecvData(data, recvData), nil
+	case <-tun.done:
 		log.Printf("Warning: Read on closed tunnel %d", tun.ID)
 		return 0, io.EOF
 	}
+}
 
+func (tun *TunnelIO) copyRecvData(data []byte, recvData []byte) int {
 	var buff bytes.Buffer
 	log.Printf("Read %d bytes", len(recvData))
 	buff.Write(recvData)
 
-	n := copy(data, buff.Bytes())
-	return n, nil
+	return copy(data, buff.Bytes())
 }
 
 // Close - Close tunnel IO operations
 func (tun *TunnelIO) Close() error {
 	tun.mutex.Lock()
-	defer tun.mutex.Unlock()
+	wasOpen := tun.isOpen
+	tun.isOpen = false
+	tun.closeOnce.Do(func() {
+		close(tun.done)
+	})
+	tun.mutex.Unlock()
 
-	if !tun.isOpen {
+	if !wasOpen {
 		log.Printf("Warning: Close on closed tunnel %d", tun.ID)
 
 		// I guess we can ignore it and don't return any error
@@ -101,14 +138,26 @@ func (tun *TunnelIO) Close() error {
 
 	log.Printf("Close tunnel %d", tun.ID)
 
-	tun.isOpen = false
-
-	close(tun.Recv)
-	close(tun.Send)
-
 	return nil
 }
 
+// Done is closed when the tunnel is closed. The public data channels remain
+// open so concurrent producers cannot panic by racing a channel close.
+func (tun *TunnelIO) Done() <-chan struct{} {
+	return tun.done
+}
+
+// Bound is closed after the server acknowledges the tunnel's streaming bind.
+func (tun *TunnelIO) Bound() <-chan struct{} {
+	return tun.bound
+}
+
+func (tun *TunnelIO) markBound() {
+	tun.boundOnce.Do(func() {
+		close(tun.bound)
+	})
+}
+
 func (tun *TunnelIO) IsOpen() bool {
 	tun.mutex.RLock()
 	defer tun.mutex.RUnlock()
@@ -123,6 +172,11 @@ func (tun *TunnelIO) Open() error {
 	if tun.isOpen {
 		return errors.New("tunnel relady in open state")
 	}
+	select {
+	case <-tun.done:
+		return errClosedTunnel
+	default:
+	}
 
 	log.Printf("Open tunnel %d", tun.ID)
 
@@ -131,16 +185,23 @@ func (tun *TunnelIO) Open() error {
 	return nil
 }
 
-// RecvData - safe way to send data to internal Recv channel. Blocking.
+// RecvData - safely queues data on the bounded internal Recv channel.
+// It blocks only when that startup buffer is full.
 func (tun *TunnelIO) RecvData(data []byte) error {
-	tun.mutex.Lock()
-	defer tun.mutex.Unlock()
-
-	if !tun.isOpen {
-		return errors.New("closed tunnel")
+	if !tun.IsOpen() {
+		return errClosedTunnel
 	}
 
-	tun.Recv <- data
+	select {
+	case <-tun.done:
+		return errClosedTunnel
+	default:
+	}
 
-	return nil
+	select {
+	case tun.Recv <- data:
+		return nil
+	case <-tun.done:
+		return errClosedTunnel
+	}
 }

client/core/tunnel_io_test.go

@@ -0,0 +1,205 @@
+package core
+
+import (
+	"bytes"
+	"errors"
+	"io"
+	"testing"
+	"time"
+)
+
+func TestTunnelIOBuffersDataBeforeReaderStarts(t *testing.T) {
+	tunnel := NewTunnelIO(1, "session")
+	if err := tunnel.Open(); err != nil {
+		t.Fatalf("open tunnel: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = tunnel.Close()
+	})
+
+	if got := cap(tunnel.Recv); got != tunnelRecvBufferSize {
+		t.Fatalf("receive buffer capacity = %d, want %d", got, tunnelRecvBufferSize)
+	}
+
+	payload := []byte("early shell output")
+	recvDone := make(chan error, 1)
+	go func() {
+		recvDone <- tunnel.RecvData(payload)
+	}()
+
+	select {
+	case err := <-recvDone:
+		if err != nil {
+			t.Fatalf("queue data before reader startup: %v", err)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("RecvData blocked before the tunnel reader started")
+	}
+
+	select {
+	case got := <-tunnel.Recv:
+		if !bytes.Equal(got, payload) {
+			t.Fatalf("queued payload = %q, want %q", got, payload)
+		}
+	default:
+		t.Fatal("early payload was not queued")
+	}
+}
+
+func TestTunnelIOCloseUnblocksFullReceiveBuffer(t *testing.T) {
+	tunnel := NewTunnelIO(2, "session")
+	if err := tunnel.Open(); err != nil {
+		t.Fatalf("open tunnel: %v", err)
+	}
+
+	for i := 0; i < tunnelRecvBufferSize; i++ {
+		recvDone := make(chan error, 1)
+		go func() {
+			recvDone <- tunnel.RecvData([]byte{byte(i)})
+		}()
+		select {
+		case err := <-recvDone:
+			if err != nil {
+				t.Fatalf("fill receive buffer frame %d: %v", i, err)
+			}
+		case <-time.After(time.Second):
+			t.Fatalf("frame %d blocked before receive buffer was full", i)
+		}
+	}
+
+	blockedRecv := make(chan error, 1)
+	go func() {
+		blockedRecv <- tunnel.RecvData([]byte("seventeenth frame"))
+	}()
+	select {
+	case err := <-blockedRecv:
+		t.Fatalf("frame beyond bounded receive capacity returned before close: %v", err)
+	case <-time.After(50 * time.Millisecond):
+	}
+
+	closeDone := make(chan error, 1)
+	go func() {
+		closeDone <- tunnel.Close()
+	}()
+	select {
+	case err := <-closeDone:
+		if err != nil {
+			t.Fatalf("close full tunnel: %v", err)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Close blocked behind RecvData on a full receive buffer")
+	}
+	select {
+	case err := <-blockedRecv:
+		if !errors.Is(err, errClosedTunnel) {
+			t.Fatalf("blocked RecvData error = %v, want %v", err, errClosedTunnel)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("blocked RecvData did not wake when tunnel closed")
+	}
+}
+
+func TestTunnelIOCloseUnblocksRead(t *testing.T) {
+	tunnel := NewTunnelIO(3, "session")
+	if err := tunnel.Open(); err != nil {
+		t.Fatalf("open tunnel: %v", err)
+	}
+
+	type readResult struct {
+		n   int
+		err error
+	}
+	readDone := make(chan readResult, 1)
+	go func() {
+		n, err := tunnel.Read(make([]byte, 32))
+		readDone <- readResult{n: n, err: err}
+	}()
+
+	if err := tunnel.Close(); err != nil {
+		t.Fatalf("close tunnel: %v", err)
+	}
+	select {
+	case result := <-readDone:
+		if result.n != 0 || !errors.Is(result.err, io.EOF) {
+			t.Fatalf("Read after close = (%d, %v), want (0, EOF)", result.n, result.err)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("blocked Read did not wake when tunnel closed")
+	}
+}
+
+func TestTunnelIOCloseUnblocksWrite(t *testing.T) {
+	tunnel := NewTunnelIO(4, "session")
+	if err := tunnel.Open(); err != nil {
+		t.Fatalf("open tunnel: %v", err)
+	}
+
+	type writeResult struct {
+		n   int
+		err error
+	}
+	writeDone := make(chan writeResult, 1)
+	go func() {
+		n, err := tunnel.Write([]byte("blocked write"))
+		writeDone <- writeResult{n: n, err: err}
+	}()
+	select {
+	case result := <-writeDone:
+		t.Fatalf("Write returned before close without a consumer: (%d, %v)", result.n, result.err)
+	case <-time.After(50 * time.Millisecond):
+	}
+
+	if err := tunnel.Close(); err != nil {
+		t.Fatalf("close tunnel: %v", err)
+	}
+	select {
+	case result := <-writeDone:
+		if result.n != 0 || !errors.Is(result.err, io.EOF) {
+			t.Fatalf("Write after close = (%d, %v), want (0, EOF)", result.n, result.err)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("blocked Write did not wake when tunnel closed")
+	}
+}
+
+func TestTunnelIOReadDrainsQueuedDataBeforeEOF(t *testing.T) {
+	tunnel := NewTunnelIO(5, "session")
+	if err := tunnel.Open(); err != nil {
+		t.Fatalf("open tunnel: %v", err)
+	}
+	payload := []byte("trailing output")
+	if err := tunnel.RecvData(payload); err != nil {
+		t.Fatalf("queue trailing output: %v", err)
+	}
+	if err := tunnel.Close(); err != nil {
+		t.Fatalf("close tunnel: %v", err)
+	}
+
+	buf := make([]byte, 32)
+	n, err := tunnel.Read(buf)
+	if err != nil || !bytes.Equal(buf[:n], payload) {
+		t.Fatalf("first Read after close = (%q, %v), want (%q, nil)", buf[:n], err, payload)
+	}
+	n, err = tunnel.Read(buf)
+	if n != 0 || !errors.Is(err, io.EOF) {
+		t.Fatalf("second Read after close = (%d, %v), want (0, EOF)", n, err)
+	}
+}
+
+func TestTunnelIOCloseBeforeOpenIsTerminal(t *testing.T) {
+	tunnel := NewTunnelIO(6, "session")
+	if err := tunnel.Close(); err != nil {
+		t.Fatalf("close tunnel before open: %v", err)
+	}
+	select {
+	case <-tunnel.Done():
+	default:
+		t.Fatal("Close before Open did not close Done")
+	}
+	if err := tunnel.Open(); !errors.Is(err, errClosedTunnel) {
+		t.Fatalf("Open after Close error = %v, want %v", err, errClosedTunnel)
+	}
+	if tunnel.IsOpen() {
+		t.Fatal("tunnel reopened after terminal Close")
+	}
+}

client/core/tunnel_test.go

@@ -0,0 +1,235 @@
+package core
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"io"
+	"testing"
+	"time"
+
+	"github.com/bishopfox/sliver/protobuf/rpcpb"
+	"github.com/bishopfox/sliver/protobuf/sliverpb"
+	"google.golang.org/grpc"
+)
+
+type tunnelLoopTestRPC struct {
+	rpcpb.SliverRPCClient
+	stream *tunnelLoopTestStream
+	opened chan struct{}
+}
+
+func (r *tunnelLoopTestRPC) TunnelData(ctx context.Context, _ ...grpc.CallOption) (grpc.BidiStreamingClient[sliverpb.TunnelData, sliverpb.TunnelData], error) {
+	r.stream.ctx = ctx
+	close(r.opened)
+	return r.stream, nil
+}
+
+type tunnelLoopTestStream struct {
+	grpc.BidiStreamingClient[sliverpb.TunnelData, sliverpb.TunnelData]
+	ctx       context.Context
+	incoming  chan *sliverpb.TunnelData
+	sent      chan *sliverpb.TunnelData
+	recvCalls chan struct{}
+	recvErr   chan error
+	sendErr   error
+}
+
+func (s *tunnelLoopTestStream) Send(data *sliverpb.TunnelData) error {
+	if s.sendErr != nil {
+		return s.sendErr
+	}
+	s.sent <- data
+	return nil
+}
+
+func TestTunnelBindSendFailureClosesTunnel(t *testing.T) {
+	tunnels := GetTunnels()
+	tunnels.Reset()
+	stream := &tunnelLoopTestStream{
+		incoming:  make(chan *sliverpb.TunnelData),
+		sent:      make(chan *sliverpb.TunnelData, 1),
+		recvCalls: make(chan struct{}, 2),
+		sendErr:   errors.New("test bind send failure"),
+	}
+	rpc := &tunnelLoopTestRPC{stream: stream, opened: make(chan struct{})}
+	ctx, cancel := context.WithCancel(context.Background())
+	loopDone := make(chan error, 1)
+	go func() { loopDone <- TunnelLoop(ctx, rpc) }()
+	t.Cleanup(func() {
+		cancel()
+		select {
+		case <-loopDone:
+		case <-time.After(time.Second):
+			t.Error("TunnelLoop did not stop after cancellation")
+		}
+		tunnels.Reset()
+	})
+	waitForTestSignal(t, rpc.opened, "TunnelLoop stream startup")
+	waitForTestSignal(t, stream.recvCalls, "initial TunnelData receive")
+
+	tunnel := tunnels.Start(9, "session")
+	select {
+	case <-tunnel.Done():
+	case <-time.After(time.Second):
+		t.Fatal("tunnel remained open after its bind frame failed to send")
+	}
+	if got := tunnels.Get(tunnel.ID); got != nil {
+		t.Fatal("failed bind tunnel remained registered")
+	}
+}
+
+func (s *tunnelLoopTestStream) Recv() (*sliverpb.TunnelData, error) {
+	s.recvCalls <- struct{}{}
+	select {
+	case data := <-s.incoming:
+		return data, nil
+	case err := <-s.recvErr:
+		return nil, err
+	case <-s.ctx.Done():
+		return nil, s.ctx.Err()
+	}
+}
+
+func TestTunnelLoopFiltersEmptyBindAcknowledgement(t *testing.T) {
+	tunnels := GetTunnels()
+	tunnels.Reset()
+
+	stream := &tunnelLoopTestStream{
+		incoming:  make(chan *sliverpb.TunnelData, 2),
+		sent:      make(chan *sliverpb.TunnelData, 1),
+		recvCalls: make(chan struct{}, 4),
+	}
+	rpc := &tunnelLoopTestRPC{
+		stream: stream,
+		opened: make(chan struct{}),
+	}
+	ctx, cancel := context.WithCancel(context.Background())
+	loopDone := make(chan error, 1)
+	go func() {
+		loopDone <- TunnelLoop(ctx, rpc)
+	}()
+	t.Cleanup(func() {
+		cancel()
+		select {
+		case <-loopDone:
+		case <-time.After(time.Second):
+			t.Error("TunnelLoop did not stop after cancellation")
+		}
+		tunnels.Reset()
+	})
+
+	waitForTestSignal(t, rpc.opened, "TunnelLoop stream startup")
+	waitForTestSignal(t, stream.recvCalls, "initial TunnelData receive")
+
+	tunnel := tunnels.Start(7, "session")
+	select {
+	case bind := <-stream.sent:
+		if bind.TunnelID != tunnel.ID || len(bind.Data) != 0 {
+			t.Fatalf("bind frame = %+v, want empty data for tunnel %d", bind, tunnel.ID)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("client did not send the tunnel bind frame")
+	}
+
+	stream.incoming <- &sliverpb.TunnelData{
+		TunnelID:  tunnel.ID,
+		SessionID: tunnel.SessionID,
+	}
+	waitForTestSignal(t, stream.recvCalls, "receive after bind acknowledgement")
+	select {
+	case <-tunnel.Bound():
+	default:
+		t.Fatal("bind acknowledgement did not mark the tunnel bound")
+	}
+	select {
+	case data := <-tunnel.Recv:
+		t.Fatalf("bind acknowledgement leaked to the tunnel reader: %q", data)
+	default:
+	}
+
+	payload := []byte("shell prompt")
+	stream.incoming <- &sliverpb.TunnelData{
+		TunnelID:  tunnel.ID,
+		SessionID: tunnel.SessionID,
+		Data:      payload,
+	}
+	waitForTestSignal(t, stream.recvCalls, "receive after shell payload")
+	select {
+	case got := <-tunnel.Recv:
+		if !bytes.Equal(got, payload) {
+			t.Fatalf("tunnel payload = %q, want %q", got, payload)
+		}
+	default:
+		t.Fatal("non-empty tunnel payload was not delivered")
+	}
+
+	stream.incoming <- &sliverpb.TunnelData{
+		TunnelID:  tunnel.ID,
+		SessionID: tunnel.SessionID,
+		Closed:    true,
+	}
+	waitForTestSignal(t, stream.recvCalls, "receive after tunnel close")
+	if got := tunnels.Get(tunnel.ID); got != nil {
+		t.Fatal("empty close frame was filtered as a bind acknowledgement")
+	}
+	select {
+	case tunnel.Send <- []byte("after close"):
+		t.Fatal("tunnel sender still consumed data after Close")
+	case <-time.After(50 * time.Millisecond):
+	}
+}
+
+func TestTunnelLoopClosesActiveTunnelsOnStreamEOF(t *testing.T) {
+	tunnels := GetTunnels()
+	tunnels.Reset()
+	t.Cleanup(tunnels.Reset)
+
+	stream := &tunnelLoopTestStream{
+		incoming:  make(chan *sliverpb.TunnelData),
+		sent:      make(chan *sliverpb.TunnelData, 1),
+		recvCalls: make(chan struct{}, 4),
+		recvErr:   make(chan error, 1),
+	}
+	rpc := &tunnelLoopTestRPC{stream: stream, opened: make(chan struct{})}
+	loopDone := make(chan error, 1)
+	go func() {
+		loopDone <- TunnelLoop(context.Background(), rpc)
+	}()
+
+	waitForTestSignal(t, rpc.opened, "TunnelLoop stream startup")
+	waitForTestSignal(t, stream.recvCalls, "initial TunnelData receive")
+	tunnel := tunnels.Start(8, "session")
+	select {
+	case <-stream.sent:
+	case <-time.After(time.Second):
+		t.Fatal("client did not send the tunnel bind frame")
+	}
+
+	stream.recvErr <- io.EOF
+	select {
+	case err := <-loopDone:
+		if err != nil {
+			t.Fatalf("TunnelLoop EOF result = %v, want nil", err)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("TunnelLoop did not return after stream EOF")
+	}
+	select {
+	case <-tunnel.Done():
+	case <-time.After(time.Second):
+		t.Fatal("active tunnel did not close after stream EOF")
+	}
+	if got := tunnels.Get(tunnel.ID); got != nil {
+		t.Fatal("active tunnel remained registered after stream EOF")
+	}
+}
+
+func waitForTestSignal(t *testing.T, signal <-chan struct{}, description string) {
+	t.Helper()
+	select {
+	case <-signal:
+	case <-time.After(time.Second):
+		t.Fatalf("timed out waiting for %s", description)
+	}
+}

client/core/tunnels.go

@@ -55,19 +55,35 @@ func GetTunnels() *tunnels {
 // Holds the tunnels locally so we can map incoming data
 // messages to the tunnel
 type tunnels struct {
-	tunnels     *map[uint64]*TunnelIO
-	mutex       *sync.RWMutex
-	streamMutex *sync.Mutex
-	stream      rpcpb.SliverRPC_TunnelDataClient
+	tunnels          *map[uint64]*TunnelIO
+	mutex            *sync.RWMutex
+	streamMutex      *sync.Mutex
+	stream           rpcpb.SliverRPC_TunnelDataClient
+	streamGeneration uint64
 }
 
-func (t *tunnels) SetStream(stream rpcpb.SliverRPC_TunnelDataClient) {
+func (t *tunnels) SetStream(stream rpcpb.SliverRPC_TunnelDataClient) uint64 {
 	t.streamMutex.Lock()
 	defer t.streamMutex.Unlock()
 
 	log.Printf("Set stream")
 
+	t.streamGeneration++
 	t.stream = stream
+	return t.streamGeneration
+}
+
+// CloseStream clears one specific stream generation and closes the tunnels it
+// owned. A stale loop cannot clear tunnels created by a replacement stream.
+func (t *tunnels) CloseStream(generation uint64) {
+	t.streamMutex.Lock()
+	defer t.streamMutex.Unlock()
+	if generation != t.streamGeneration {
+		return
+	}
+
+	t.stream = nil
+	t.closeAll()
 }
 
 // Get - Get a tunnel
@@ -105,27 +121,39 @@ func (t *tunnels) Start(tunnelID uint64, sessionID string) *TunnelIO {
 	(*t.tunnels)[tunnelID] = tunnel
 
 	go func(tunnel *TunnelIO) {
-		tunnel.Open()
+		if err := tunnel.Open(); err != nil {
+			log.Printf("Failed to open tunnel %d: %v", tunnelID, err)
+			return
+		}
 		log.Printf("Tunnel now is open, %d", tunnelID)
 
-		for data := range tunnel.Send {
-			log.Printf("Send %d bytes on tunnel %d", len(data), tunnel.ID)
+		for {
+			select {
+			case <-tunnel.Done():
+				log.Printf("Tunnel send loop stopped. %d", tunnelID)
+				return
+			case data := <-tunnel.Send:
+				log.Printf("Send %d bytes on tunnel %d", len(data), tunnel.ID)
 
-			err := t.send(&sliverpb.TunnelData{
-				TunnelID:  tunnel.ID,
-				SessionID: tunnel.SessionID,
-				Data:      data,
-			})
+				err := t.send(&sliverpb.TunnelData{
+					TunnelID:  tunnel.ID,
+					SessionID: tunnel.SessionID,
+					Data:      data,
+				})
 
-			if err != nil {
-				log.Printf("Error sending, %s", err)
+				if err != nil {
+					log.Printf("Error sending, %s", err)
+					t.Close(tunnel.ID)
+					return
+				}
 			}
 		}
-
-		log.Printf("Tunnel Send channel looks closed now. %d", tunnelID)
 	}(tunnel)
 
-	tunnel.Send <- make([]byte, 0) // Send "zero" message to bind client to tunnel
+	select {
+	case tunnel.Send <- make([]byte, 0): // Send "zero" message to bind client to tunnel
+	case <-tunnel.Done():
+	}
 	return tunnel
 }
 
@@ -164,8 +192,16 @@ func (t *tunnels) CloseForSession(sessionID string) {
 // Reset closes all open tunnels and clears the underlying storage/stream.
 // This is used when switching servers inside a single client process.
 func (t *tunnels) Reset() {
-	t.SetStream(nil)
+	t.streamMutex.Lock()
+	defer t.streamMutex.Unlock()
+	t.streamGeneration++
+	t.stream = nil
+	t.closeAll()
+}
 
+// closeAll runs with streamMutex held so a replacement stream cannot publish
+// new tunnels until the previous generation has been fully torn down.
+func (t *tunnels) closeAll() {
 	t.mutex.Lock()
 	defer t.mutex.Unlock()
 

client/transport/connect_mode.go

@@ -11,8 +11,21 @@ import (
 type MultiplayerConnectMode int
 
 const (
-	MultiplayerConnectDirect MultiplayerConnectMode = iota
+	// MultiplayerConnectAuto follows the explicit WireGuard opt-in recorded in
+	// the operator config.
+	MultiplayerConnectAuto MultiplayerConnectMode = iota
+	// MultiplayerConnectEnableWG forces WireGuard for complete configs,
+	// including legacy configs that predate the explicit opt-in marker.
 	MultiplayerConnectEnableWG
+	// MultiplayerConnectDisableWG forces direct multiplayer mTLS.
+	MultiplayerConnectDisableWG
+
+	// MultiplayerConnectDirect is retained as a source-compatible alias for
+	// callers that explicitly select direct multiplayer mTLS.
+	MultiplayerConnectDirect = MultiplayerConnectDisableWG
+	// MultiplayerConnectRequireWG is retained for source compatibility.
+	// Deprecated: use MultiplayerConnectEnableWG.
+	MultiplayerConnectRequireWG = MultiplayerConnectEnableWG
 )
 
 type connectionCloser interface {
@@ -21,7 +34,7 @@ type connectionCloser interface {
 
 var (
 	multiplayerConnectModeMu sync.RWMutex
-	multiplayerConnectMode   = MultiplayerConnectDirect
+	multiplayerConnectMode   = MultiplayerConnectAuto
 	connClosers              sync.Map // *grpc.ClientConn -> connectionCloser
 )
 

client/transport/mtls.go

@@ -104,17 +104,36 @@ func selectMultiplayerDialStrategy(config *assets.ClientConfig) (multiplayerDial
 		return multiplayerDialDirect, errors.New("client config is required")
 	}
 
-	switch getMultiplayerConnectMode() {
+	mode := getMultiplayerConnectMode()
+	switch mode {
+	case MultiplayerConnectDisableWG:
+		return multiplayerDialDirect, nil
 	case MultiplayerConnectEnableWG:
 		if err := validateWireGuardConfig(config); err != nil {
 			return multiplayerDialDirect, err
 		}
 		return multiplayerDialWireGuard, nil
+	case MultiplayerConnectAuto:
+		if config.WG == nil || !config.WG.Enabled {
+			return multiplayerDialDirect, nil
+		}
+		if err := validateWireGuardConfig(config); err != nil {
+			return multiplayerDialDirect, err
+		}
+		return multiplayerDialWireGuard, nil
 	default:
-		return multiplayerDialDirect, nil
+		return multiplayerDialDirect, fmt.Errorf("invalid multiplayer connect mode %d", mode)
 	}
 }
 
+// MultiplayerConnectUsesWireGuard reports whether the current mode and
+// operator config select the WireGuard wrapper. Invalid WireGuard configs
+// report false; the initial multiplayer dial returns the validation error.
+func MultiplayerConnectUsesWireGuard(config *assets.ClientConfig) bool {
+	strategy, err := selectMultiplayerDialStrategy(config)
+	return err == nil && strategy == multiplayerDialWireGuard
+}
+
 func directMTLSConnect(config *assets.ClientConfig, statusFn ConnectStatusFn) (rpcpb.SliverRPCClient, *grpc.ClientConn, error) {
 	notifyConnectStatus(statusFn, connectStatusGRPCMTLS)
 	options, err := newMTLSDialOptions(config)

client/transport/mtls_test.go

@@ -10,8 +10,14 @@ import (
 	"google.golang.org/grpc/credentials/insecure"
 )
 
-func TestSelectMultiplayerDialStrategyLegacyConfigUsesDirectMTLS(t *testing.T) {
-	setTestMultiplayerConnectMode(t, MultiplayerConnectDirect)
+func TestMultiplayerConnectModeDefaultsToAuto(t *testing.T) {
+	if mode := getMultiplayerConnectMode(); mode != MultiplayerConnectAuto {
+		t.Fatalf("expected auto to be the default multiplayer mode, got %v", mode)
+	}
+}
+
+func TestSelectMultiplayerDialStrategyAutoWithoutWGConfigUsesDirectMTLS(t *testing.T) {
+	setTestMultiplayerConnectMode(t, MultiplayerConnectAuto)
 
 	strategy, err := selectMultiplayerDialStrategy(&assets.ClientConfig{})
 	if err != nil {
@@ -22,15 +28,10 @@ func TestSelectMultiplayerDialStrategyLegacyConfigUsesDirectMTLS(t *testing.T) {
 	}
 }
 
-func TestSelectMultiplayerDialStrategyDefaultIgnoresIncompleteWGConfig(t *testing.T) {
-	setTestMultiplayerConnectMode(t, MultiplayerConnectDirect)
+func TestSelectMultiplayerDialStrategyAutoLegacyWGConfigUsesDirectMTLS(t *testing.T) {
+	setTestMultiplayerConnectMode(t, MultiplayerConnectAuto)
 
-	strategy, err := selectMultiplayerDialStrategy(&assets.ClientConfig{
-		WG: &assets.ClientWGConfig{
-			ServerPubKey: "server-pub",
-			ClientIP:     "100.64.0.2",
-		},
-	})
+	strategy, err := selectMultiplayerDialStrategy(completeWGClientConfig(false))
 	if err != nil {
 		t.Fatalf("select dial strategy: %v", err)
 	}
@@ -39,6 +40,33 @@ func TestSelectMultiplayerDialStrategyDefaultIgnoresIncompleteWGConfig(t *testin
 	}
 }
 
+func TestSelectMultiplayerDialStrategyAutoEnabledWGConfigRequiresCompleteConfig(t *testing.T) {
+	setTestMultiplayerConnectMode(t, MultiplayerConnectAuto)
+
+	_, err := selectMultiplayerDialStrategy(&assets.ClientConfig{
+		WG: &assets.ClientWGConfig{
+			Enabled:      true,
+			ServerPubKey: "server-pub",
+			ClientIP:     "100.64.0.2",
+		},
+	})
+	if !errors.Is(err, ErrIncompleteWireGuardConfig) {
+		t.Fatalf("expected incomplete WG config error, got %v", err)
+	}
+}
+
+func TestSelectMultiplayerDialStrategyAutoEnabledWGConfigUsesWireGuard(t *testing.T) {
+	setTestMultiplayerConnectMode(t, MultiplayerConnectAuto)
+
+	strategy, err := selectMultiplayerDialStrategy(completeWGClientConfig(true))
+	if err != nil {
+		t.Fatalf("select dial strategy: %v", err)
+	}
+	if strategy != multiplayerDialWireGuard {
+		t.Fatalf("expected WireGuard strategy, got %v", strategy)
+	}
+}
+
 func TestSelectMultiplayerDialStrategyEnableWGRejectsMissingWGConfig(t *testing.T) {
 	setTestMultiplayerConnectMode(t, MultiplayerConnectEnableWG)
 
@@ -62,16 +90,10 @@ func TestSelectMultiplayerDialStrategyEnableWGRejectsIncompleteWGConfig(t *testi
 	}
 }
 
-func TestSelectMultiplayerDialStrategyEnableWGUsesWireGuardWhenConfigComplete(t *testing.T) {
+func TestSelectMultiplayerDialStrategyEnableWGUsesCompleteLegacyConfig(t *testing.T) {
 	setTestMultiplayerConnectMode(t, MultiplayerConnectEnableWG)
 
-	strategy, err := selectMultiplayerDialStrategy(&assets.ClientConfig{
-		WG: &assets.ClientWGConfig{
-			ServerPubKey:     "server-pub",
-			ClientPrivateKey: "client-priv",
-			ClientIP:         "100.64.0.2",
-		},
-	})
+	strategy, err := selectMultiplayerDialStrategy(completeWGClientConfig(false))
 	if err != nil {
 		t.Fatalf("select dial strategy: %v", err)
 	}
@@ -80,21 +102,38 @@ func TestSelectMultiplayerDialStrategyEnableWGUsesWireGuardWhenConfigComplete(t
 	}
 }
 
-func TestSelectMultiplayerDialStrategyDefaultUsesDirectMTLSEvenWhenWGConfigComplete(t *testing.T) {
-	setTestMultiplayerConnectMode(t, MultiplayerConnectDirect)
+func TestSelectMultiplayerDialStrategyDisableWGOverridesEnabledConfig(t *testing.T) {
+	setTestMultiplayerConnectMode(t, MultiplayerConnectDisableWG)
 
-	strategy, err := selectMultiplayerDialStrategy(&assets.ClientConfig{
-		WG: &assets.ClientWGConfig{
-			ServerPubKey:     "server-pub",
-			ClientPrivateKey: "client-priv",
-			ClientIP:         "100.64.0.2",
-		},
-	})
+	strategy, err := selectMultiplayerDialStrategy(completeWGClientConfig(true))
 	if err != nil {
 		t.Fatalf("select dial strategy: %v", err)
 	}
 	if strategy != multiplayerDialDirect {
-		t.Fatalf("expected direct strategy when WG is not explicitly enabled, got %v", strategy)
+		t.Fatalf("expected direct strategy, got %v", strategy)
+	}
+}
+
+func TestSelectMultiplayerDialStrategyRejectsInvalidMode(t *testing.T) {
+	setTestMultiplayerConnectMode(t, MultiplayerConnectMode(255))
+
+	strategy, err := selectMultiplayerDialStrategy(completeWGClientConfig(true))
+	if strategy != multiplayerDialDirect {
+		t.Fatalf("expected invalid mode to fall back to direct strategy, got %v", strategy)
+	}
+	if err == nil || err.Error() != "invalid multiplayer connect mode 255" {
+		t.Fatalf("expected invalid mode error, got %v", err)
+	}
+}
+
+func completeWGClientConfig(enabled bool) *assets.ClientConfig {
+	return &assets.ClientConfig{
+		WG: &assets.ClientWGConfig{
+			Enabled:          enabled,
+			ServerPubKey:     "server-pub",
+			ClientPrivateKey: "client-priv",
+			ClientIP:         "100.64.0.2",
+		},
 	}
 }
 

docs/sliver-docs/package-lock.json

@@ -22,7 +22,7 @@
         "asciinema-player": "^3.15.1",
         "fuse.js": "^7.3.0",
         "lunr": "^2.3.9",
-        "mermaid": "^11.15.0",
+        "mermaid": "^11.16.1",
         "next": "^16.2.6",
         "next-themes": "^0.4.6",
         "react": "^19.2.5",
@@ -1498,12 +1498,12 @@
       }
     },
     "node_modules/@mermaid-js/parser": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/@mermaid-js/parser/-/parser-1.1.1.tgz",
-      "integrity": "sha512-VuHdsYMK1bT6X2JbcAaWAhugTRvRBRyuZgd+c22swUeI9g/ntaxF7CY7dYarhZovofCbUNO0G7JesfmNtjYOCw==",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@mermaid-js/parser/-/parser-1.2.0.tgz",
+      "integrity": "sha512-oYPyv8A4As1yH5Bx+04iQEQxXuIQDe0GKCNSRgao6z8AM9jixXIfP0vsppRLvGf+nKIOb9/LdpWA4YuJiVvESA==",
       "license": "MIT",
       "dependencies": {
-        "@chevrotain/types": "~11.1.1"
+        "@chevrotain/types": "~11.1.2"
       }
     },
     "node_modules/@monaco-editor/loader": {
@@ -7707,26 +7707,26 @@
       }
     },
     "node_modules/mermaid": {
-      "version": "11.15.0",
-      "resolved": "https://registry.npmjs.org/mermaid/-/mermaid-11.15.0.tgz",
-      "integrity": "sha512-pTMbcf3rWdtLiYGpmoTjHEpeY8seiy6sR+9nD7LOs8KfUbHE4lOUAprTRqRAcWSQ6MQpdX+YEsxShtGsINtPtw==",
+      "version": "11.16.1",
+      "resolved": "https://registry.npmjs.org/mermaid/-/mermaid-11.16.1.tgz",
+      "integrity": "sha512-TQsq6u22fAn3rek5VOubrhKPo1g5hwC3FXUN9hiyupTckcYiGuuKGkNQrKYwGJkXUxZdojwRG46gsSCFZMDp4g==",
       "license": "MIT",
       "dependencies": {
-        "@braintree/sanitize-url": "^7.1.1",
+        "@braintree/sanitize-url": "^7.1.2",
         "@iconify/utils": "^3.0.2",
-        "@mermaid-js/parser": "^1.1.1",
+        "@mermaid-js/parser": "^1.2.0",
         "@types/d3": "^7.4.3",
         "@upsetjs/venn.js": "^2.0.0",
-        "cytoscape": "^3.33.1",
+        "cytoscape": "^3.33.3",
         "cytoscape-cose-bilkent": "^4.1.0",
         "cytoscape-fcose": "^2.2.0",
         "d3": "^7.9.0",
         "d3-sankey": "^0.12.3",
         "dagre-d3-es": "7.0.14",
-        "dayjs": "^1.11.19",
-        "dompurify": "^3.3.1",
+        "dayjs": "^1.11.20",
+        "dompurify": "^3.3.3",
         "es-toolkit": "^1.45.1",
-        "katex": "^0.16.25",
+        "katex": "^0.16.45",
         "khroma": "^2.1.0",
         "marked": "^16.3.0",
         "roughjs": "^4.6.6",

docs/sliver-docs/package.json

@@ -26,7 +26,7 @@
     "asciinema-player": "^3.15.1",
     "fuse.js": "^7.3.0",
     "lunr": "^2.3.9",
-    "mermaid": "^11.15.0",
+    "mermaid": "^11.16.1",
     "next": "^16.2.6",
     "next-themes": "^0.4.6",
     "react": "^19.2.5",

docs/sliver-docs/pages/docs/md/Aliases and Extensions.md

@@ -168,6 +168,8 @@ As the alias support relies on Sliver side loading capabilities, please make sur
 
 ## Extensions
 
-⚠️ Extensions are currently only supported when using Windows implants, though we're actively working on MacOS/Linux support.
+Native extensions are supported by Windows implants (`386`, `amd64`, and `arm64`), Linux implants (`386`, `amd64`, and `arm64`), and macOS implants (`amd64` and `arm64`). Each manifest must include a platform-native shared library for every target it supports: `.dll` on Windows, `.so` on Linux, and `.dylib` on macOS.
 
 Extensions are similar in structure to an alias, but internally work differently. An extension is an artifact of native code that is reflectively loaded by the implant and passed certain callbacks. These callbacks allow the extension to return data to the C2 server. Extensions may also have dependencies (other extensions), which Sliver will load prior to the extension; circular dependencies are not allowed. For example, all BOF extensions (`.o` files) rely on the COFF Loader extension (a `.dll`).
+
+Native exports use the same Sliver extension ABI on every supported operating system. The export receives the argument buffer, its size, and a callback used to return output. The optional `init` export in the extension manifest is called once after the library is loaded and before any command export is invoked.

docs/sliver-docs/pages/docs/md/Architecture.md

@@ -5,7 +5,7 @@ This document describes the technical design of Sliver.
 There are four major components to the Sliver ecosystem:
 
 - **Server Console -** The server console is the main interface, which is started when you run the `sliver-server` executable. The server console is a superset of the client console. All code is shared between the client/server consoles except server-specific commands related to client (i.e., operator) management. The server console talks over an in-memory gRPC interface to the server.
-- **Sliver Server -** The Sliver server is also part of the `sliver-server` executable and manages the internal database, starts/stops network listeners (such as C2 listeners, though there are other types). The main interface used to interact with the server is the gRPC interface, thru which all functionality is implemented. By default the server will only start an in-memory gRPC listener that can only be communicated with from the server console. However, the gRPC interface can also be exposed to the network in multiplayer mode, either directly over mutual TLS (mTLS) or, by default, through a WireGuard-protected wrapper that carries the same gRPC/mTLS service.
+- **Sliver Server -** The Sliver server is also part of the `sliver-server` executable and manages the internal database, starts/stops network listeners (such as C2 listeners, though there are other types). The main interface used to interact with the server is the gRPC interface, thru which all functionality is implemented. By default the server will only start an in-memory gRPC listener that can only be communicated with from the server console. However, the gRPC interface can also be exposed to the network in multiplayer mode, directly over mutual TLS (mTLS) by default or through an optional WireGuard-protected wrapper that carries the same gRPC/mTLS service.
 - **Sliver Client -** The client console is the primary user interface that is used to interact with the Sliver server. Note that most of the code in the server console is actually the client console. The client console can also be compiled into a separate client binary file `sliver-client`, which is generally used to connect to the multiplayer gRPC network listener.
 - **Implant -** The implant is the actual malicious code run on the target system you want remote access to.
 
@@ -17,8 +17,8 @@ There are four major components to the Sliver ecosystem:
 └─────────┘             └───────────────┘
                                ▲
                                │
-                               │WireGuard (default)
-                               │or direct gRPC/mTLS
+                               │gRPC/mTLS (default)
+                               │or optional WireGuard wrapper
                                │
                           ┌────┴────┐
                           │ Sliver  │

docs/sliver-docs/pages/docs/md/BOF and COFF Support.md

@@ -2,11 +2,11 @@ Sliver supports the loading and execution of BOFs and COFFs, generally no code c
 
 ### BOF Extensions
 
-BOF support is provided via the [COFF Loader](https://github.com/sliverarmory/COFFLoader) extension, you'll need it installed to run pretty much any BOF. However, the COFF Loader will be installed automatically if you install a BOF extension from the [armory](/docs?name=Armory).
+New Sliver implants execute BOFs with the built-in [Reflektor](https://github.com/sliverarmory/reflektor) executor by default. Armory packages can retain a [COFF Loader](https://github.com/sliverarmory/COFFLoader) dependency as a compatibility fallback for older clients, servers, and implants; Armory installs that dependency automatically.
 
 The easiest way to install a BOF extension, for example [`nanodump`](https://github.com/sliverarmory/nanodump), is using the [armory](/docs?name=Armory) package manager:
 
-**IMPORTANT:** BOF extensions are still installed per-sliver client for normal operator use, so they are not shared across operators automatically. If you want the server-side AI agent to use a BOF, copy the unpacked BOF directory into `~/.sliver/ai/extensions` on the server as well, and copy any dependency such as `coff-loader` into that same server-side AI store.
+**IMPORTANT:** BOF extensions are still installed per-sliver client for normal operator use, so they are not shared across operators automatically. If you want the server-side AI agent to use a BOF, copy the unpacked BOF directory into `~/.sliver/ai/extensions` on the server as well. Copy its `depends_on` package too when the manifest retains a compatibility fallback or explicitly selects a COFF loader.
 
 ```
 sliver > armory install nanodump
@@ -75,7 +75,7 @@ beacon_command_register(
 | z    | zero-terminated+encoded string   | `string`                     |
 | Z    | zero-terminated wide-char string | `wstring`                    |
 
-Looking at the script we can see the BOF requires a single integer argument. The corresponding Sliver `extension.json` file is shown below. Note that BOFs will always rely on the `coff-loader` extension but other kinds of extensions may not. If the `coff-loader` extension is not already installed on your system, it can be installed using `armory install coff-loader`. You can list installed extensions by simply running the `extensions` command with no arguments.
+Looking at the script we can see the BOF requires a single integer argument. The corresponding Sliver `extension.json` file is shown below. This manifest prefers Reflektor while retaining `coff-loader` for old-component compatibility. If the loader is not already installed, Armory installs it with the BOF package.
 
 ```json
 {
@@ -87,6 +87,7 @@ Looking at the script we can see the BOF requires a single integer argument. The
   "repo_url": "https://github.com/sliverarmory/CredManBOF",
   "help": "Dump credentials using the CredsBackupCredentials API",
   "long_help": "",
+  "bof_executor": "reflektor",
   "depends_on": "coff-loader",
   "entrypoint": "go",
   "files": [
@@ -112,10 +113,19 @@ Looking at the script we can see the BOF requires a single integer argument. The
 }
 ```
 
+`bof_executor` accepts two values:
+
+- `reflektor` prefers built-in execution when both the server and implant advertise support. If `depends_on` is present, upgraded clients use it as the fallback for an older server or implant, while old clients ignore `bof_executor` and retain their existing loader behavior.
+- `coff-loader` always uses the existing loader path. `depends_on` is required and names the concrete loader, including custom loaders.
+
+When `bof_executor` is omitted, existing `.o` manifests with `depends_on` keep their legacy loader behavior. A dependency-free `.o` defaults to Reflektor and therefore requires a compatible client, server, and implant.
+
 Once the manifest is defined load it into your client using `extensions load`, locally loaded extensions do not need to be cryptographically signed. The paths in the manifest should be relative to the manifest file, parent directories are not allowed.
 
 If you want the server-side AI agent to discover and run the same BOF, copy that unpacked directory into `~/.sliver/ai/extensions/<name>/` so the `extension.json` file and `.o` artifact are available on the server.
 
 More details can be found on the [Aliases & Extensions](/docs?name=Aliases+and+Extensions) page.
 
-**IMPORTANT:** For BOF extensions to be properly detected by the Sliver client, the `path` must use the `.o` file extension.
+To execute BOF projects that ship CNA/Aggressor Script wrappers directly, see [OPFOR](/docs?name=OPFOR).
+
+**IMPORTANT:** Legacy manifests should keep the `.o` file extension. An explicit `bof_executor` also identifies the command as a BOF, but older clients still rely on the `.o` suffix.

docs/sliver-docs/pages/docs/md/Configuration Files.md

@@ -55,6 +55,7 @@ cxx: {}
   - `port` - Listen port for the multiplayer listener.
   - `tailscale` - Enable Tailscale for daemon listener setup. When enabled, Sliver does not wrap multiplayer in its own WireGuard layer.
   - `enable_wg` - Wrap multiplayer in WireGuard. If omitted or false, multiplayer is exposed directly over mTLS.
+    - The legacy `disable_wg` field from the withdrawn WireGuard-by-default release does not enable WireGuard and is normalized to `enable_wg: false`. Set `enable_wg: true` explicitly to opt in.
 - `logs` - Server logging options.
   - `level` - `logrus` level (`0`-`6`, clamped by Sliver). `4` is `INFO`, `5` is `DEBUG`, `6` is `TRACE`.
   - `grpc_unary_payloads` - Log gRPC unary payloads.
@@ -142,21 +143,31 @@ For details on generating them, see [multiplayer mode](/docs?name=Multi-player+M
   "lport": 31337,
   "ca_certificate": "-----BEGIN CERTIFICATE-----\n...\n-----END CERTIFICATE-----\n",
   "private_key": "-----BEGIN EC PRIVATE KEY-----\n...\n-----END EC PRIVATE KEY-----\n",
-  "certificate": "-----BEGIN CERTIFICATE-----\n...\n-----END CERTIFICATE-----\n",
-  "wg": {
-    "server_pub_key": "<multiplayer-wg-server-pubkey>",
-    "client_private_key": "<operator-wg-private-key>",
-    "client_pub_key": "<operator-wg-public-key>",
-    "client_ip": "100.65.0.10",
-    "server_ip": "100.65.0.1"
-  }
+  "certificate": "-----BEGIN CERTIFICATE-----\n...\n-----END CERTIFICATE-----\n"
 }
 ```
 
 **Note:** The `operator` field is mostly a local label in the client. Server-side identity is derived from the client certificate (`CommonName`) and token material generated by the server. If you need to rename an operator, generate a new client configuration.
 
-The `wg` block is optional:
+The default operator profile does not contain a `wg` block, and the client connects directly to the multiplayer mTLS listener.
 
-- When present, `sliver-client` automatically brings up the multiplayer WireGuard wrapper and then dials the in-tunnel gRPC/mTLS service.
-- When absent, the client connects directly to the multiplayer mTLS listener.
-- Generate a WireGuard-enabled profile with `new-operator --enable-wg` or `sliver-server operator --enable-wg` when you want the multiplayer WireGuard wrapper.
+Multiplayer WireGuard is opt-in. Generate a WireGuard-enabled profile with `new-operator --enable-wg` or `sliver-server operator --enable-wg`; this adds the following block:
+
+```json
+"wg": {
+  "enabled": true,
+  "server_pub_key": "<multiplayer-wg-server-pubkey>",
+  "client_private_key": "<operator-wg-private-key>",
+  "client_pub_key": "<operator-wg-public-key>",
+  "client_ip": "100.65.0.10",
+  "server_ip": "100.65.0.1"
+}
+```
+
+The listener must also be started with `multiplayer --enable-wg` or `sliver-server daemon --enable-wg`. The official client reads the profile and automatically uses WireGuard only when `wg.enabled` is true; otherwise it connects directly. A profile from the withdrawn WireGuard-by-default release may contain a `wg` block without the `enabled` field. Such a profile stays in direct mode unless you deliberately force WireGuard with `sliver-client --enable-wg`.
+
+The client flags override the profile selection:
+
+- `sliver-client --enable-wg` forces WireGuard and requires usable tunnel settings in the selected profile.
+- `sliver-client --disable-wg` forces a direct gRPC/mTLS connection even when `wg.enabled` is true.
+- Without either flag, `sliver-client` follows `wg.enabled`. The two override flags cannot be used together.

docs/sliver-docs/pages/docs/md/Custom Clients.md

@@ -2,18 +2,18 @@ Although the `sliver-client` is the default way to interact with a `sliver-serve
 
 To do so, you can use [sliver-script](https://github.com/moloch--/sliver-script), [sliver-py](https://github.com/moloch--/sliver-py), or write a custom client in another language.
 
-Current Sliver releases generate multiplayer operator configs with a `wg` block by default. The official `sliver-client`, and Go clients that reuse Sliver's `client/assets` plus `client/transport` packages, will automatically bring up that WireGuard wrapper before dialing the in-tunnel gRPC/mTLS service.
+Sliver exposes multiplayer directly over gRPC/mTLS and generates direct operator configs by default. The multiplayer WireGuard wrapper is enabled explicitly on the listener and when the operator profile is generated. A WireGuard-enabled profile records that choice as `wg.enabled: true`.
 
 If you are writing a custom client in another language, you have two options:
 
-- Implement the multiplayer WireGuard wrapper described in [multiplayer mode](/docs?name=Multi-player+Mode), then connect to the in-tunnel gRPC/mTLS service.
-- Keep multiplayer in direct mode by default, or explicitly opt into the wrapper with `multiplayer --enable-wg` or `sliver-server daemon --enable-wg`. Generate matching operator profiles with `new-operator --enable-wg` or `sliver-server operator --enable-wg` when you want the client-side WireGuard wrapper.
+- Use the default direct gRPC/mTLS multiplayer mode, which works with a standard gRPC client and a default operator profile.
+- Implement the multiplayer WireGuard wrapper described in [multiplayer mode](/docs?name=Multi-player+Mode). Opt into it with `multiplayer --enable-wg` or `sliver-server daemon --enable-wg`, generate a matching profile with `new-operator --enable-wg` or `sliver-server operator --enable-wg`, and honor `wg.enabled` when selecting the transport. A legacy profile that has a `wg` block but no `enabled` field should remain direct.
 
 Once connected, the client/server API is still gRPC, so any language with gRPC support can in theory be used to create a custom client.
 
 ## Writing a Go client
 
-This example uses Sliver's Go client libraries, so it works with either a direct multiplayer profile or a WireGuard-enabled profile.
+This example uses Sliver's Go client libraries. `transport.MTLSConnect` automatically follows the selected profile in `transport.MultiplayerConnectAuto` mode: `wg.enabled: true` selects WireGuard, while a missing or disabled marker selects direct gRPC/mTLS. Applications that expose manual transport controls can call `transport.SetMultiplayerConnectMode` with `transport.MultiplayerConnectEnableWG` or `transport.MultiplayerConnectDisableWG` before connecting.
 
 In this example, we will focus on writing a custom Go client that executes a new system command on every new implant that connects to the sliver server.
 

docs/sliver-docs/pages/docs/md/Daemon Mode.md

@@ -1,6 +1,6 @@
 Sliver supports running in daemon mode, which automatically starts the multiplayer listener but does not provide an interactive console. To connect to a daemonized server, use [multiplayer mode](/docs?name=Multi-player+Mode) operator configs.
 
-By default, daemon mode starts the same WireGuard-protected multiplayer listener used by the interactive `multiplayer` command. That means the outer listener is UDP on `31337` by default, while the authenticated gRPC/mTLS service stays inside the WireGuard tunnel.
+By default, daemon mode exposes the multiplayer listener directly over TCP gRPC/mTLS on port `31337`. The multiplayer WireGuard wrapper is opt-in with `--enable-wg` or `daemon.enable_wg: true`.
 
 There are two ways to run in daemon mode:
 
@@ -49,7 +49,7 @@ Since daemon mode does not provide an interactive server console, generate opera
 ./sliver-server operator --name zer0cool --lhost 1.2.3.4 --permissions all --save zer0cool.cfg
 ```
 
-The `operator` CLI generates direct multiplayer profiles by default. Add `--enable-wg` when the daemon is running with the WireGuard wrapper.
+The `operator` CLI generates direct multiplayer profiles by default. When the daemon is running with the WireGuard wrapper, add `--enable-wg` while generating the profile. That profile contains `wg.enabled: true`, so `sliver-client` selects WireGuard automatically. Use the client's `--enable-wg` or `--disable-wg` only when you need to override the profile.
 
 ### Shutdown Behavior
 

docs/sliver-docs/pages/docs/md/External Builders.md

@@ -21,6 +21,10 @@ Any `sliver-server` binary can be started as a builder process using [operator c
 ./sliver-server builder -c operator-multiplayer.cfg
 ```
 
+Builders follow the operator profile automatically: direct profiles use gRPC/mTLS, while profiles generated with `new-operator --enable-wg` (or `sliver-server operator --enable-wg`) contain `wg.enabled: true` and use WireGuard. No builder flag is required for a correctly generated profile.
+
+Use `--enable-wg` to force WireGuard for a profile with tunnel settings, or `--disable-wg` to force a direct connection; the flags cannot be combined. Profiles from the withdrawn WireGuard-by-default release may have a `wg` block without `enabled`; builders treat those profiles as direct unless WireGuard is forced explicitly.
+
 When started as a builder, the Sliver process will mirror log output to stdout by default, however this can be disabled (see `sliver-server builder --help`).
 
 **⚠️ IMPORTANT:** Builders must have unique names, by default the builder's hostname will be used, but this can be changed using the `--name` cli flag.

docs/sliver-docs/pages/docs/md/Linux Install Script.md

@@ -4,7 +4,7 @@ https://sliver.sh/install
 
 This script should work on Kali, Ubuntu, and RHEL (CentOS, etc) distributions of Linux.
 
-**⚠️ OPSEC:** By default the Linux install script will bind the multiplayer listener to `:31337` on all interfaces. In current releases that is the WireGuard-protected multiplayer listener, so the outer service is UDP/31337 and the authenticated gRPC/mTLS server only exists inside the tunnel. Ensure your firewalls are properly configured if this is a concern, or reconfigure the server to bind to localhost if you only wish to allow local users. Publicly exposing the multiplayer listener still makes the server easier to discover and fingerprint.
+**⚠️ OPSEC:** By default the Linux install script binds the direct multiplayer gRPC/mTLS listener to TCP `:31337` on all interfaces. WireGuard is not enabled by the installer. Ensure your firewalls are properly configured, or reconfigure the server to bind to localhost if you only wish to allow local users. Publicly exposing the multiplayer listener makes the server easier to discover and fingerprint.
 
 ### One Liner
 

docs/sliver-docs/pages/docs/md/Multi-player Mode.md

@@ -10,8 +10,7 @@ Sliver exposes the operator-facing multiplayer listener directly over gRPC/mTLS
                     └──────────────────┘
                             ▲
                             │
-  UDP/WireGuard (default)   │
-     gRPC/mTLS inside       │
+   TCP/gRPC/mTLS (default)  │
       ┌────────────┬────────┴─────┬───────────┐
       │            │              │           │
 ┌─────┴──┐         │              │        ┌──┴─────┐
@@ -21,7 +20,7 @@ Sliver exposes the operator-facing multiplayer listener directly over gRPC/mTLS
               └────────┘     └────────┘
 ```
 
-## Default WireGuard-Protected Mode
+## Default Direct mTLS Mode
 
 Operators will need to download their preferred platform's client software from the releases page. Clients can connect to servers of differing platforms (e.g. a Windows client can connect to a Linux server). Operators and servers authenticate using Mutual TLS, however all the certificates are managed automatically for you.
 
@@ -32,11 +31,9 @@ Operators need a configuration file generated by the Sliver server to connect in
 
 In the default mode:
 
-- `multiplayer` exposes a WireGuard listener on `--lport` (default `31337`) over UDP.
-- The authenticated gRPC/mTLS server only listens inside that WireGuard tunnel.
-- `new-operator` generates a per-operator WireGuard keypair and tunnel IP, then embeds that information in the operator config's `wg` block.
-- The multiplayer listener uses WireGuard keys that are separate from Sliver's implant `wg` C2 listener.
-- `sliver-client` automatically uses the WireGuard wrapper when the imported config contains that `wg` block.
+- `multiplayer` exposes the authenticated gRPC/mTLS listener directly over TCP on `--lport` (default `31337`).
+- `new-operator` generates a direct multiplayer profile without a `wg` block.
+- `sliver-client` connects directly over gRPC/mTLS because the selected profile does not opt into WireGuard.
 
 From the server, start the multiplayer listener and generate an operator config with the server's public address or hostname in `--lhost`. Use `--permissions all` for a standard interactive operator profile:
 
@@ -66,28 +63,50 @@ $ ./sliver-client
   localhost
 ```
 
-## Direct mTLS Mode
+## Optional WireGuard Wrapper
 
-If you want the old behavior, or you need compatibility with third-party gRPC clients that do not implement the multiplayer WireGuard wrapper, disable it on both the listener and the generated operator profile:
+Multiplayer WireGuard is opt-in. Enable it explicitly on the listener and include matching WireGuard settings in the operator profile:
 
 ```
-[server] sliver > multiplayer
+[server] sliver > multiplayer --enable-wg
 
 [*] Multiplayer mode enabled!
 
-[server] sliver > new-operator --name tester --lhost 1.2.3.4 --permissions all
+[server] sliver > new-operator --name tester --lhost 1.2.3.4 --permissions all --enable-wg
 
 [*] Generating new client certificate, please wait ...
 [*] Saved new client config to: /Users/tester/Desktop/tester_example.com.cfg
 ```
 
-In direct mode:
+Import the profile and start the client normally:
 
-- Multiplayer is exposed directly over TCP on `--lport` (default `31337`).
-- Generated operator configs omit the `wg` block.
-- `sliver-client --enable-wg` opts into the multiplayer WireGuard wrapper when the operator config includes a `wg` block.
+```
+$ ./sliver-client import ./tester_example.com.cfg
 
-The listener mode, operator config, and client flag need to match. A WireGuard-wrapped listener needs a `wg` block in the operator profile plus `sliver-client --enable-wg`. Direct multiplayer works without the `wg` block and without the flag.
+$ ./sliver-client
+```
+
+In WireGuard mode:
+
+- `multiplayer --enable-wg` exposes a WireGuard listener on `--lport` (default `31337`) over UDP.
+- The authenticated gRPC/mTLS server only listens inside that WireGuard tunnel.
+- `new-operator --enable-wg` generates a per-operator WireGuard keypair and tunnel IP, then embeds that information with `wg.enabled: true` in the operator profile.
+- `sliver-client` sees `wg.enabled: true` and automatically uses the profile's WireGuard settings before dialing the in-tunnel gRPC/mTLS service.
+- The multiplayer listener uses WireGuard keys that are separate from Sliver's implant `wg` C2 listener.
+
+The listener mode and operator profile need to match. A WireGuard-wrapped listener needs a profile generated with `--enable-wg`; direct multiplayer uses a normal profile. No client flag is required in either case.
+
+The client provides explicit overrides for troubleshooting and migration:
+
+- `sliver-client --enable-wg` forces WireGuard and requires usable WireGuard settings in the profile.
+- `sliver-client --disable-wg` forces direct gRPC/mTLS even when `wg.enabled` is true.
+- Without either flag, the client follows `wg.enabled`. The flags cannot be used together.
+
+Profiles from the withdrawn WireGuard-by-default release may contain a `wg` block without the new `enabled` marker. The client treats those profiles as direct rather than considering block presence an opt-in. To keep using WireGuard, explicitly recreate the listener and profile with `--enable-wg`. The client override can temporarily force a legacy profile only when its listener is also running in WireGuard mode.
+
+When upgrading from the withdrawn WireGuard-by-default release, legacy persisted multiplayer jobs restart in direct mode because they do not contain an explicit WireGuard opt-in. Recreate the listener with `multiplayer --enable-wg` if you intentionally want the wrapper.
+
+Upgrade affected clients along with the server. The withdrawn client automatically selected WireGuard whenever a `wg` block was present, so it can mismatch a listener that the new server safely migrated to direct mode. Until that client is upgraded, use its `--disable-wg` override for a migrated direct listener, or explicitly re-enable WireGuard on both the listener and profile.
 
 ### Server CLI / Daemon Mode Multiplayer
 
@@ -99,7 +118,7 @@ Use the server CLI to generate operator configuration files:
 ./sliver-server operator --name zer0cool --lhost 1.2.3.4 --permissions all --save zer0cool.cfg
 ```
 
-Operator profiles omit the multiplayer `wg` block by default. Add `--enable-wg` when the listener is wrapped in WireGuard.
+Operator profiles omit the multiplayer `wg` block by default. Add `--enable-wg` when the listener is wrapped in WireGuard; the resulting `wg.enabled: true` marker makes the client select the wrapper automatically.
 
 The installation script places the `sliver-server` binary in `/root` by default.
 
@@ -107,7 +126,7 @@ The installation script places the `sliver-server` binary in `/root` by default.
 
 Sliver supports multiplayer integration with [Tailscale](https://tailscale.com/), which is an excellent option when you want to keep the multiplayer listener off the public Internet.
 
-Tailscale mode is separate from the default multiplayer WireGuard wrapper. When you use `multiplayer -T`, Sliver exposes the listener only through Tailscale instead of layering its own multiplayer WireGuard tunnel on top.
+Tailscale mode is separate from the optional multiplayer WireGuard wrapper. When you use `multiplayer -T`, Sliver exposes the listener only through Tailscale instead of layering its own multiplayer WireGuard tunnel on top.
 
 ```
 $ export TS_AUTHKEY=<tailscale authkey>

docs/sliver-docs/pages/docs/md/OPFOR.md

@@ -0,0 +1,106 @@
+[OPFOR](https://github.com/sliverarmory/opfor) runs a BOF-focused subset of CNA/Aggressor Script directly inside `sliver-client`. It lets operators use projects that already ship a `.cna` wrapper and BOF object files without first translating the script into a Sliver extension manifest.
+
+OPFOR is not a complete Cobalt Strike client or a complete Aggressor Script implementation. Sliver currently connects the parts needed by common BOF scripts: local script resources, Beacon alias registration and help, target metadata queries, BOF argument packing, transcript output, `beacon_inline_execute`, result callbacks, and basic terminal prompts.
+
+For manifest-based BOF packages and Armory installation, see [BOF and COFF Support](/docs?name=BOF+and+COFF+Support).
+
+## Requirements
+
+- Keep the `.cna` file and its resource tree on the computer running `sliver-client`. Calls such as `script_resource()` resolve files from that local script tree.
+- BOF aliases require an active session or beacon. The target must advertise Sliver's `bof_v1` capability.
+- The tested BOF execution path supports Windows x64 and x86 targets. A CNA may perform its own architecture selection with functions such as `barch()`.
+- Review third-party scripts before loading them. Top-level CNA code runs locally in the Sliver client process.
+
+Loaded scripts and their registrations belong only to the current client process. They are not installed in Armory, copied to the server, or shared with other operators, and they must be loaded again after restarting the client.
+
+## Commands
+
+| Command | Behavior |
+| --- | --- |
+| `opfor check <script.cna>` | Compile the script without executing its top-level code. |
+| `opfor run <script.cna> [arguments...]` | Execute top-level code once with trailing values in `@ARGV`, then discard registrations. |
+| `opfor load <script.cna>` | Execute initialization and retain aliases, hooks, and callbacks. |
+| `opfor <script.cna>` | Shorthand for `opfor load <script.cna>`. |
+| `opfor list` | List scripts retained by this client process. |
+| `opfor help <alias>` | Display the description and detail supplied by `beacon_command_register()`. |
+| `opfor <alias> [arguments...]` | Invoke a loaded Beacon alias against the active target. |
+| `opfor unload <script.cna>` | Retire a loaded script and its registrations. |
+
+`opfor run` does not invoke aliases declared by the script. Most BOF CNAs define an `alias` at top level, so running one only creates that alias in a temporary runtime and then retires it. Use `opfor load`, select a target, and invoke the registered alias instead.
+
+The default operation timeout is 600 seconds. Put a timeout override before the alias name so Sliver consumes it instead of passing it to the CNA command:
+
+```
+opfor --timeout 900 firefoxdump /all
+```
+
+Arguments after the alias name are passed to the CNA as written, including flag-like values. If the CNA itself needs a leading `--timeout` or `-t` argument, place `--` before it so the OPFOR host stops parsing timeout overrides:
+
+```
+opfor example -- --timeout
+```
+
+## Loading and running FirefoxDump
+
+Keep the script beside the object files expected by its `script_resource()` calls. For example:
+
+```
+firefoxdump/
+├── firefoxdump.cna
+└── bin/
+    ├── firefoxdump.x64.o
+    └── firefoxdump.x86.o
+```
+
+Check the script before executing its initialization code:
+
+```
+sliver > opfor check ./firefoxdump/firefoxdump.cna
+./firefoxdump/firefoxdump.cna: ok
+```
+
+Load it persistently:
+
+```
+sliver > opfor load ./firefoxdump/firefoxdump.cna
+
+[*] Loaded CNA script /absolute/path/firefoxdump/firefoxdump.cna
+[*] Registered CNA aliases:
+  opfor firefoxdump
+[*] View CNA alias help:
+  opfor help firefoxdump
+```
+
+Inspect the command metadata without running the BOF:
+
+```
+sliver > opfor help firefoxdump
+
+Command: opfor firefoxdump [arguments...]
+
+Extract Firefox secrets (cookies, passwords) from Firefox profile.
+```
+
+Select a compatible target and invoke the alias:
+
+```
+sliver > use <session-or-beacon>
+sliver (TARGET) > opfor firefoxdump /all
+```
+
+OPFOR sends the selected object file and packed arguments through Sliver's native BOF execution path. Session results are rendered immediately; beacon tasks are correlated and polled until the result or command deadline arrives. Typed BOF output channels and CNA callbacks are preserved when the script uses them.
+
+Unload the script when it is no longer needed:
+
+```
+sliver > opfor unload ./firefoxdump/firefoxdump.cna
+```
+
+## Compatibility and troubleshooting
+
+- If an alias is missing after `opfor run`, load the script instead. One-shot registrations are intentionally discarded.
+- If Sliver reports that no target is active, run `use <session-or-beacon>` before invoking the alias.
+- If the target does not advertise `bof_v1`, update the server, client, and implant to compatible builds and establish a new session or beacon.
+- If `script_resource()` cannot find an object file, preserve the upstream directory layout relative to the `.cna` file.
+- If a script calls an unsupported Aggressor function or prompt type, OPFOR returns an explicit error. The current integration prioritizes BOF execution rather than every Aggressor callback or client feature.
+- CNA aliases are namespaced beneath `opfor`, so they do not replace built-in Sliver commands. The management names `check`, `help`, `list`, `load`, `run`, and `unload` remain reserved.

docs/sliver-docs/pages/tutorials/md/6 - Scripting.md

@@ -61,14 +61,14 @@ pip3 install sliver-py
 
 Since our extension is essentially going to be another client connection to the sliver server, you’ll also need to enable multiplayer mode and generate a new profile.
 
-Current Sliver releases default to a WireGuard-protected multiplayer listener. Because this tutorial uses a third-party Python client, we’ll force direct multiplayer mode so the profile only contains the plain gRPC/mTLS settings:
+Sliver defaults to direct gRPC/mTLS multiplayer, which is compatible with this third-party Python client. Start the listener and generate the operator profile without the optional WireGuard flag:
 
 ```bash
-[server] sliver > multiplayer --disable-wg
+[server] sliver > multiplayer
 
 [*] Multiplayer mode enabled!
 
-[server] sliver > new-operator -n tester -l 127.0.0.1 --permissions all --disable-wg
+[server] sliver > new-operator -n tester -l 127.0.0.1 --permissions all
 
 [*] Generating new client certificate, please wait ...
 [*] Saved new client config to: /Users/tester/tools/tester_127.0.0.1.cfg

docs/sliver-docs/public/tutorials.json

@@ -1 +1 @@
-{"tutorials":[{"name":"1 - Getting Started","content":"`sliver-server` is the binary you want to use to run the Sliver C2 server, `sliver-client` is solely a client to connect to a Sliver C2 server. Sliver server also acts as a client on its own, so you don’t necessarily run sliver server and client separately.\n\nFirst time running Sliver will take a couple seconds as it's retrieving its dependencies. Consecutive executions will be much faster. Go ahead and launch the `sliver-server`.\n\n```asciinema\n{\"src\": \"/asciinema/startup.cast\", \"cols\": \"132\", \"rows\": \"28\", \"idleTimeLimit\": 8}\n```\n\nLet's take a couple minutes to discuss what Sliver actually is and how it's set up.\n\n![Alt text](/images/Architecture.png)\n\nNow that Sliver is running, lets generate and execute your first implant to try out some of the basic features of Sliver, for now we’re going to run everything on the local host.\n\nHere's what we're going to do: \n* Generate your implant using the `generate` command as shown below.\n* Start HTTP listener on port 80\n* Execute implant in a separate terminal\n\n```asciinema\n{\"src\": \"/asciinema/first-implant.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nNow let’s select our implant and run our first command using the `use` command.\n\n```bash\n[server] sliver > use\n? Select a session or beacon: \nSESSION  1884a365  RELATED_EARDRUM  [::1]:49153      test.local  tester  darwin/amd64\n[*] Active session RELATED_EARDRUM (1884a365-085f-4506-b28e-80c481730fd0)\n\n[server] sliver (RELATED_EARDRUM) > pwd\n\n[*] /Users/tester/tools\n```\n\nOnce you have reached this point, go ahead and explore some of the commands listed below. In each case, first check out the command's help using the **`-h`** flag then try it out!\n\n```bash\nExploring and interacting with the filesystem\n\nFilesystem\n  cat               Dump file to stdout\n  cd                Change directory\n  cp                Copy a file\n  download          Download a file\n  grep              Search for strings that match a regex within a file or directory\n  head              Grab the first number of bytes or lines from a file\n  ls                List current directory\n  mkdir             Make a directory\n  mv                Move or rename a file\n  pwd               Print working directory\n  rm                Remove a file or directory\n  tail              Grab the last number of bytes or lines from a file\n  upload            Upload a file\n```\n\n```asciinema\n{\"src\": \"/asciinema/filesystem.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nGetting some environmental information\n```bash\nInfo\n  env               List environment variables\n  getgid            Get session process GID\n  getpid            Get session pid\n  getuid            Get session process UID\n  info              Get session info\n  ping              Send round trip message to implant (does not use ICMP)\n  whoami            Get session user execution context\n```\nExecute a binary\n\n```asciinema\n{\"src\": \"/asciinema/execute.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nRunning an interactive shell\n\n```asciinema\n{\"src\": \"/asciinema/shell.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nNot all commands are supported for all operating systems or meant to be used on all operating systems, here are a few examples:\n\n```\nmount             Get information on mounted filesystems (only for Windows and Linux)\nscreenshot        Take a screenshot (only for Windows and Linux)\nmemfiles          List current memfiles (Linux only)\n```\n\nThis is an open-source project if you see a bug please file an issue! Pull requests are always welcome."},{"name":"2 - Beacons vs Sessions","content":"Sliver implants support two types of connections, sessions and beacons.\n\nSessions use long-polling connections, which means they constantly maintain a single TCP connection open while communicating with the server. Beacons on the other hand call back periodically and will sleep when not active which can help keep their presence hidden. You could limit callbacks to once every 6 hours for example and only 'activate' the beacon when needed by switching its sleeping time to a shorter duration.\n\nTypically during an engagement you will want to deploy a beacon on the target system and switch to a session while doing more active enumeration.\n\nLet’s start with generating and deploying a beacon using `http`.\n\n```asciinema\n{\"src\": \"/asciinema/beacon_generation.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nYou can see the beacon callback times either in the `info` command or using `beacons watch`.\n\n```bash\n[server] sliver > beacons watch\n\n ID         Name            Transport   Username          Operating System   Last Check-In   Next Check-In\n========== =============== =========== ================= ==========Line truncated
+{"tutorials":[{"name":"1 - Getting Started","content":"`sliver-server` is the binary you want to use to run the Sliver C2 server, `sliver-client` is solely a client to connect to a Sliver C2 server. Sliver server also acts as a client on its own, so you don’t necessarily run sliver server and client separately.\n\nFirst time running Sliver will take a couple seconds as it's retrieving its dependencies. Consecutive executions will be much faster. Go ahead and launch the `sliver-server`.\n\n```asciinema\n{\"src\": \"/asciinema/startup.cast\", \"cols\": \"132\", \"rows\": \"28\", \"idleTimeLimit\": 8}\n```\n\nLet's take a couple minutes to discuss what Sliver actually is and how it's set up.\n\n![Alt text](/images/Architecture.png)\n\nNow that Sliver is running, lets generate and execute your first implant to try out some of the basic features of Sliver, for now we’re going to run everything on the local host.\n\nHere's what we're going to do: \n* Generate your implant using the `generate` command as shown below.\n* Start HTTP listener on port 80\n* Execute implant in a separate terminal\n\n```asciinema\n{\"src\": \"/asciinema/first-implant.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nNow let’s select our implant and run our first command using the `use` command.\n\n```bash\n[server] sliver > use\n? Select a session or beacon: \nSESSION  1884a365  RELATED_EARDRUM  [::1]:49153      test.local  tester  darwin/amd64\n[*] Active session RELATED_EARDRUM (1884a365-085f-4506-b28e-80c481730fd0)\n\n[server] sliver (RELATED_EARDRUM) > pwd\n\n[*] /Users/tester/tools\n```\n\nOnce you have reached this point, go ahead and explore some of the commands listed below. In each case, first check out the command's help using the **`-h`** flag then try it out!\n\n```bash\nExploring and interacting with the filesystem\n\nFilesystem\n  cat               Dump file to stdout\n  cd                Change directory\n  cp                Copy a file\n  download          Download a file\n  grep              Search for strings that match a regex within a file or directory\n  head              Grab the first number of bytes or lines from a file\n  ls                List current directory\n  mkdir             Make a directory\n  mv                Move or rename a file\n  pwd               Print working directory\n  rm                Remove a file or directory\n  tail              Grab the last number of bytes or lines from a file\n  upload            Upload a file\n```\n\n```asciinema\n{\"src\": \"/asciinema/filesystem.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nGetting some environmental information\n```bash\nInfo\n  env               List environment variables\n  getgid            Get session process GID\n  getpid            Get session pid\n  getuid            Get session process UID\n  info              Get session info\n  ping              Send round trip message to implant (does not use ICMP)\n  whoami            Get session user execution context\n```\nExecute a binary\n\n```asciinema\n{\"src\": \"/asciinema/execute.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nRunning an interactive shell\n\n```asciinema\n{\"src\": \"/asciinema/shell.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nNot all commands are supported for all operating systems or meant to be used on all operating systems, here are a few examples:\n\n```\nmount             Get information on mounted filesystems (only for Windows and Linux)\nscreenshot        Take a screenshot (only for Windows and Linux)\nmemfiles          List current memfiles (Linux only)\n```\n\nThis is an open-source project if you see a bug please file an issue! Pull requests are always welcome."},{"name":"2 - Beacons vs Sessions","content":"Sliver implants support two types of connections, sessions and beacons.\n\nSessions use long-polling connections, which means they constantly maintain a single TCP connection open while communicating with the server. Beacons on the other hand call back periodically and will sleep when not active which can help keep their presence hidden. You could limit callbacks to once every 6 hours for example and only 'activate' the beacon when needed by switching its sleeping time to a shorter duration.\n\nTypically during an engagement you will want to deploy a beacon on the target system and switch to a session while doing more active enumeration.\n\nLet’s start with generating and deploying a beacon using `http`.\n\n```asciinema\n{\"src\": \"/asciinema/beacon_generation.cast\", \"cols\": \"132\", \"rows\": \"14\", \"idleTimeLimit\": 8}\n```\n\nYou can see the beacon callback times either in the `info` command or using `beacons watch`.\n\n```bash\n[server] sliver > beacons watch\n\n ID         Name            Transport   Username          Operating System   Last Check-In   Next Check-In\n========== =============== =========== ================= ==========Line truncated

go-tests.sh

@@ -125,19 +125,29 @@ run_test_cmd() {
 should_skip_package() {
 	local pkg="$1"
 	local tags="${2:-}"
-	local go_list_cmd=(go list -e -f '{{if .Error}}{{.Error}}{{end}}')
-	if [ -n "$tags" ]; then
-		go_list_cmd+=("-tags=$tags")
-	fi
-	go_list_cmd+=("$pkg")
-
 	local go_list_error
-	go_list_error="$("${go_list_cmd[@]}" 2>/dev/null || true)"
+	local test_file_counts
+	if [ -n "$tags" ]; then
+		go_list_error="$(go list -e -f '{{if .Error}}{{.Error}}{{end}}' "-tags=$tags" "$pkg" 2>/dev/null || true)"
+		test_file_counts="$(go list -e -f '{{len .TestGoFiles}} {{len .XTestGoFiles}}' "-tags=$tags" "$pkg" 2>/dev/null || true)"
+	else
+		go_list_error="$(go list -e -f '{{if .Error}}{{.Error}}{{end}}' "$pkg" 2>/dev/null || true)"
+		test_file_counts="$(go list -e -f '{{len .TestGoFiles}} {{len .XTestGoFiles}}' "$pkg" 2>/dev/null || true)"
+	fi
 	if [[ "$go_list_error" == *"build constraints exclude all Go files"* ]]; then
 		echo
 		echo "==> Skipping $pkg (unsupported on current platform)"
 		return 0
 	fi
+
+	# File discovery intentionally sees tests for every OS. Avoid forcing a
+	# package build when all of its tests are excluded by the current target's
+	# build constraints; those tests remain discoverable on their target OS.
+	if [ "$test_file_counts" = "0 0" ]; then
+		echo
+		echo "==> Skipping $pkg (no tests for current platform)"
+		return 0
+	fi
 	return 1
 }
 
@@ -145,7 +155,7 @@ collect_test_dirs() {
 	if command -v rg >/dev/null 2>&1; then
 		rg --files -g '*_test.go'
 	else
-		find client implant server util -type f -name '*_test.go' -print
+		find client implant server test util -type f -name '*_test.go' -print
 	fi
 }
 
@@ -169,6 +179,7 @@ done < <(collect_test_dirs | xargs -n1 dirname | sort -u)
 CLIENT_TEST_PKGS=()
 IMPLANT_TEST_PKGS=()
 SERVER_UTIL_TEST_PKGS=()
+E2E_SUPPORT_TEST_PKGS=()
 
 for test_dir in "${TEST_DIRS[@]}"; do
 	pkg="./$test_dir"
@@ -185,6 +196,9 @@ for test_dir in "${TEST_DIRS[@]}"; do
 	./server/* | ./util*)
 		SERVER_UTIL_TEST_PKGS+=("$pkg")
 		;;
+	./test/e2e | ./test/e2e/*)
+		E2E_SUPPORT_TEST_PKGS+=("$pkg")
+		;;
 	esac
 done
 
@@ -196,6 +210,15 @@ for pkg in "${CLIENT_TEST_PKGS[@]}"; do
 	run_test_cmd "$pkg" go test -tags="client,$TAGS" "$pkg" || exit 1
 done
 
+## Comprehensive E2E support packages. The top-level lifecycle test skips
+## unless a server binary is supplied; coverage/report unit tests run here.
+for pkg in "${E2E_SUPPORT_TEST_PKGS[@]}"; do
+	if should_skip_package "$pkg" "client,$TAGS"; then
+		continue
+	fi
+	run_test_cmd "$pkg" go test -tags="client,$TAGS" "$pkg" || exit 1
+done
+
 ## Implant
 for pkg in "${IMPLANT_TEST_PKGS[@]}"; do
 	if should_skip_package "$pkg"; then

go.mod

@@ -12,11 +12,10 @@ require (
 	charm.land/bubbles/v2 v2.0.0
 	charm.land/glamour/v2 v2.0.1
 	charm.land/huh/v2 v2.0.3
-	charm.land/lipgloss/v2 v2.0.4
+	charm.land/lipgloss/v2 v2.0.6
 	filippo.io/age v1.3.1
 	github.com/Binject/binjection v0.0.0-20210701074423-605d46e35deb
 	github.com/Binject/debug v0.0.0-20230508195519-26db73212a7a
-	github.com/Binject/universal v0.0.0-20220519011857-bea739e758c0
 	github.com/Ne0nd0g/go-clr v1.0.3
 	github.com/SherClockHolmes/webpush-go v1.4.0
 	github.com/alecthomas/chroma v0.10.0
@@ -24,6 +23,7 @@ require (
 	github.com/cheggaaa/pb/v3 v3.1.7
 	github.com/chromedp/cdproto v0.0.0-20250803210736-d308e07a266d
 	github.com/chromedp/chromedp v0.14.1
+	github.com/ebitengine/purego v0.10.1
 	github.com/glebarez/sqlite v1.11.0
 	github.com/gofrs/uuid v4.4.0+incompatible
 	github.com/golang/protobuf v1.5.4
@@ -31,7 +31,7 @@ require (
 	github.com/gorilla/mux v1.8.1
 	github.com/grpc-ecosystem/go-grpc-middleware v1.4.0
 	github.com/hashicorp/yamux v0.1.2
-	github.com/jedib0t/go-pretty/v6 v6.7.8
+	github.com/jedib0t/go-pretty/v6 v6.8.3
 	github.com/kbinani/screenshot v0.0.0-20250624051815-089614a94018
 	github.com/klauspost/compress v1.18.4
 	github.com/lesnuages/go-winio v0.4.19
@@ -39,7 +39,7 @@ require (
 	github.com/mattn/go-sqlite3 v1.14.32
 	github.com/miekg/dns v1.1.70
 	github.com/moloch--/asciicast v0.1.1
-	github.com/moloch--/sgn v0.0.5
+	github.com/moloch--/sgn v0.1.2
 	github.com/ncruces/go-sqlite3 v0.30.4
 	github.com/nikoksr/notify v1.5.0
 	github.com/openai/openai-go/v2 v2.7.1
@@ -49,7 +49,8 @@ require (
 	github.com/sirupsen/logrus v1.9.4
 	github.com/sliverarmory/beignet v0.0.3
 	github.com/sliverarmory/malasada v0.0.3
-	github.com/sliverarmory/reflektor v0.0.2
+	github.com/sliverarmory/opfor v0.0.2
+	github.com/sliverarmory/reflektor v0.0.8
 	github.com/sliverarmory/wasm-donut v0.0.3
 	github.com/spf13/cobra v1.10.2
 	github.com/spf13/pflag v1.0.10
@@ -63,7 +64,7 @@ require (
 	golang.org/x/exp v0.0.0-20260218203240-3dfff04db8fa
 	golang.org/x/mod v0.37.0
 	golang.org/x/net v0.56.0
-	golang.org/x/sys v0.46.0
+	golang.org/x/sys v0.47.0
 	golang.org/x/term v0.44.0
 	golang.org/x/text v0.40.0
 	golang.zx2c4.com/wireguard v0.0.0-20250521234502-f333402bd9cb
@@ -126,7 +127,7 @@ require (
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/charmbracelet/harmonica v0.2.0 // indirect
-	github.com/charmbracelet/ultraviolet v0.0.0-20260205113103-524a6607adb8 // indirect
+	github.com/charmbracelet/ultraviolet v0.0.0-20260811164956-006e29f97886 // indirect
 	github.com/charmbracelet/x/exp/ordered v0.1.0 // indirect
 	github.com/charmbracelet/x/exp/slice v0.0.0-20250904123553-b4e2667e5ad5 // indirect
 	github.com/charmbracelet/x/termios v0.1.1 // indirect
@@ -232,8 +233,6 @@ require (
 	github.com/akutz/memconn v0.1.0 // indirect
 	github.com/alexbrainman/sspi v0.0.0-20250919150558-7d374ff0d59e // indirect
 	github.com/atotto/clipboard v0.1.4
-	github.com/awgh/cppgo v0.0.0-20210224085512-3d24bca8edc0 // indirect
-	github.com/awgh/rawreader v0.0.0-20200626064944-56820a9c6da4 // indirect
 	github.com/aws/aws-sdk-go-v2 v1.41.3 // indirect
 	github.com/aws/aws-sdk-go-v2/config v1.32.11 // indirect
 	github.com/aws/aws-sdk-go-v2/service/ssm v1.65.1 // indirect
@@ -241,7 +240,7 @@ require (
 	github.com/carapace-sh/carapace-shlex v1.1.1 // indirect
 	github.com/catppuccin/go v0.3.0 // indirect
 	github.com/charmbracelet/colorprofile v0.4.3
-	github.com/charmbracelet/x/ansi v0.11.7
+	github.com/charmbracelet/x/ansi v0.11.8
 	github.com/charmbracelet/x/exp/charmtone v0.0.0-20260109001716-2fbdffcb221f
 	github.com/charmbracelet/x/exp/strings v0.0.0-20240722160745-212f7b056ed0 // indirect
 	github.com/charmbracelet/x/term v0.2.2 // indirect
@@ -281,12 +280,12 @@ require (
 	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/jsimonetti/rtnetlink v1.4.2 // indirect
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
-	github.com/lucasb-eyer/go-colorful v1.4.0
+	github.com/lucasb-eyer/go-colorful v1.4.1
 	github.com/lxn/win v0.0.0-20210218163916-a377121e959e // indirect
 	github.com/mark3labs/mcp-go v0.45.0
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mattn/go-runewidth v0.0.23 // indirect
+	github.com/mattn/go-runewidth v0.0.24 // indirect
 	github.com/mdlayher/netlink v1.8.0 // indirect
 	github.com/mdlayher/socket v0.5.1 // indirect
 	github.com/mitchellh/go-ps v1.0.0 // indirect

go.sum

@@ -12,8 +12,8 @@ charm.land/glamour/v2 v2.0.1 h1:xl+r00A4aJWU0z8fgwKd9fQQ4rsphqGUzuEiXZP5n+c=
 charm.land/glamour/v2 v2.0.1/go.mod h1:jo9z8XqVKPeEFMVdvCRLGk++RyJ3CdUwgNr7EvXLw3k=
 charm.land/huh/v2 v2.0.3 h1:2cJsMqEPwSywGHvdlKsJyQKPtSJLVnFKyFbsYZTlLkU=
 charm.land/huh/v2 v2.0.3/go.mod h1:93eEveeeqn47MwiC3tf+2atZ2l7Is88rAtmZNZ8x9Wc=
-charm.land/lipgloss/v2 v2.0.4 h1:lcPeVtcp23SNra7lHy8iYE4UC2aIipVQ47sbGyyxR5Q=
-charm.land/lipgloss/v2 v2.0.4/go.mod h1:0653x8epbZSzdDfO/XPS1a/uYPOBeSsCssOpJOqDzik=
+charm.land/lipgloss/v2 v2.0.6 h1:EaGKeuA8FvF+v2BT5VmZd2LoYLaMZJXA5n34th8nCIQ=
+charm.land/lipgloss/v2 v2.0.6/go.mod h1:ipDDJNSGa1hlwDtSfW1s2/xR8Vdhbut4PXh2zEKZd0Q=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.123.0 h1:2NAUJwPR47q+E35uaJeYoNhuNEM9kM8SjgRgdeOJUSE=
 cloud.google.com/go v0.123.0/go.mod h1:xBoMV08QcqUGuPW65Qfm1o9Y4zKZBpGS+7bImXLTAZU=
@@ -49,14 +49,11 @@ firebase.google.com/go/v4 v4.18.0 h1:S+g0P72oDGqOaG4wlLErX3zQmU9plVdu7j+Bc3R1qFw
 firebase.google.com/go/v4 v4.18.0/go.mod h1:P7UfBpzc8+Z3MckX79+zsWzKVfpGryr6HLbAe7gCWfs=
 github.com/Binject/binjection v0.0.0-20210701074423-605d46e35deb h1:c1Bb1n1wr2xgTHkNVxkUHBshff33m+IXgY6lE6oYttg=
 github.com/Binject/binjection v0.0.0-20210701074423-605d46e35deb/go.mod h1:fSQ9asCJK/lIGXUnoRwJNMXcnzel53AsZMCtlVBIn3k=
-github.com/Binject/debug v0.0.0-20210225042342-c9b8b45728d2/go.mod h1:QzgxDLY/qdKlvnbnb65eqTedhvQPbaSP2NqIbcuKvsQ=
 github.com/Binject/debug v0.0.0-20210312092933-6277045c2fdf/go.mod h1:QzgxDLY/qdKlvnbnb65eqTedhvQPbaSP2NqIbcuKvsQ=
 github.com/Binject/debug v0.0.0-20230508195519-26db73212a7a h1:4c0nc0krv8eh7gD809n+swLaCuFyHpxdrxwx0ZmHvBw=
 github.com/Binject/debug v0.0.0-20230508195519-26db73212a7a/go.mod h1:QzgxDLY/qdKlvnbnb65eqTedhvQPbaSP2NqIbcuKvsQ=
 github.com/Binject/shellcode v0.0.0-20191101084904-a8a90e7d4563 h1:T8z8Wz/fqaPPANF8Unv4LjWLoa0TAvsjYAsRpvSkOqs=
 github.com/Binject/shellcode v0.0.0-20191101084904-a8a90e7d4563/go.mod h1:HMbzsKPz1sF7H4Hmeovh+d2PH2iKPYpAB4XMOVz8wmM=
-github.com/Binject/universal v0.0.0-20220519011857-bea739e758c0 h1:1sdnMvqxxlMXsu8ku/Xrh6gi3V40ykksst5fd0lfWnc=
-github.com/Binject/universal v0.0.0-20220519011857-bea739e758c0/go.mod h1:J3XDRlam5pPYca3i6EqgQ35GCCEoyxafpCbLkta0ozc=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/toml v1.4.1-0.20240526193622-a339e1f7089c h1:pxW6RcqyfI9/kWtOwnv/G+AzdKuy2ZrqINhenH4HyNs=
 github.com/BurntSushi/toml v1.4.1-0.20240526193622-a339e1f7089c/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
@@ -114,10 +111,6 @@ github.com/atc0005/go-teams-notify/v2 v2.14.0 h1:7N+xw+COnYANLREaAveQ65rsNQ12nIZ
 github.com/atc0005/go-teams-notify/v2 v2.14.0/go.mod h1:EECsWM2b0Hvoz7O+QdlsvyN2KCUOFQCGj8bUBXv3A3Q=
 github.com/atotto/clipboard v0.1.4 h1:EH0zSVneZPSuFR11BlR9YppQTVDbh5+16AmcJi4g1z4=
 github.com/atotto/clipboard v0.1.4/go.mod h1:ZY9tmq7sm5xIbd9bOK4onWV4S6X0u6GY7Vn0Yu86PYI=
-github.com/awgh/cppgo v0.0.0-20210224085512-3d24bca8edc0 h1:JjwxKkxzcBk4k8147g0eBQRCIy0UN1Be8AAv6RaIj4Q=
-github.com/awgh/cppgo v0.0.0-20210224085512-3d24bca8edc0/go.mod h1:IbERvuyb387Hppp8hX0SQTFt/mkej8+OhuS8L0nC2CI=
-github.com/awgh/rawreader v0.0.0-20200626064944-56820a9c6da4 h1:cIAK2NNf2yafdgpFRNJrgZMwvy61BEVpGoHc2n4/yWs=
-github.com/awgh/rawreader v0.0.0-20200626064944-56820a9c6da4/go.mod h1:SalMPBCab3yuID8nIhLfzwoBV+lBRyaC7NhuN8qL8xE=
 github.com/aws/aws-sdk-go-v2 v1.41.3 h1:4kQ/fa22KjDt13QCy1+bYADvdgcxpfH18f0zP542kZA=
 github.com/aws/aws-sdk-go-v2 v1.41.3/go.mod h1:mwsPRE8ceUUpiTgF7QmQIJ7lgsKUPQOUl3o72QBrE1o=
 github.com/aws/aws-sdk-go-v2/config v1.32.11 h1:ftxI5sgz8jZkckuUHXfC/wMUc8u3fG1vQS0plr2F2Zs=
@@ -186,10 +179,10 @@ github.com/charmbracelet/colorprofile v0.4.3 h1:QPa1IWkYI+AOB+fE+mg/5/4HRMZcaXex
 github.com/charmbracelet/colorprofile v0.4.3/go.mod h1:/zT4BhpD5aGFpqQQqw7a+VtHCzu+zrQtt1zhMt9mR4Q=
 github.com/charmbracelet/harmonica v0.2.0 h1:8NxJWRWg/bzKqqEaaeFNipOu77YR5t8aSwG4pgaUBiQ=
 github.com/charmbracelet/harmonica v0.2.0/go.mod h1:KSri/1RMQOZLbw7AHqgcBycp8pgJnQMYYT8QZRqZ1Ao=
-github.com/charmbracelet/ultraviolet v0.0.0-20260205113103-524a6607adb8 h1:eyFRbAmexyt43hVfeyBofiGSEmJ7krjLOYt/9CF5NKA=
-github.com/charmbracelet/ultraviolet v0.0.0-20260205113103-524a6607adb8/go.mod h1:SQpCTRNBtzJkwku5ye4S3HEuthAlGy2n9VXZnWkEW98=
-github.com/charmbracelet/x/ansi v0.11.7 h1:kzv1kJvjg2S3r9KHo8hDdHFQLEqn4RBCb39dAYC84jI=
-github.com/charmbracelet/x/ansi v0.11.7/go.mod h1:9qGpnAVYz+8ACONkZBUWPtL7lulP9No6p1epAihUZwQ=
+github.com/charmbracelet/ultraviolet v0.0.0-20260811164956-006e29f97886 h1:rdnVWKgJpTVXKuKuJyxDJ+NFJdUaUqGvyGy61OcvlbA=
+github.com/charmbracelet/ultraviolet v0.0.0-20260811164956-006e29f97886/go.mod h1:nAw0d9PhFp1qdzi2xhQU5YOu5sVpDIHWlaW2Uz/bCro=
+github.com/charmbracelet/x/ansi v0.11.8 h1:JMFwp0CgDC2+jcOB162HH5k7I3FVbgFSMMYg7dSPBQQ=
+github.com/charmbracelet/x/ansi v0.11.8/go.mod h1:ZNN+3mXny/516oTQPLMPIBeSINvNJJQ8uQXDgbeJxY0=
 github.com/charmbracelet/x/conpty v0.1.1 h1:s1bUxjoi7EpqiXysVtC+a8RrvPPNcNvAjfi4jxsAuEs=
 github.com/charmbracelet/x/conpty v0.1.1/go.mod h1:OmtR77VODEFbiTzGE9G1XiRJAga6011PIm4u5fTNZpk=
 github.com/charmbracelet/x/errors v0.0.0-20240508181413-e8d8b6e2de86 h1:JSt3B+U9iqk37QUU2Rvb6DSBYRLtWqFqfxf8l5hOZUA=
@@ -274,6 +267,8 @@ github.com/drswork/go-twitter v0.0.0-20221107160839-dea1b6ed53d7 h1:uh1GSejOhVPR
 github.com/drswork/go-twitter v0.0.0-20221107160839-dea1b6ed53d7/go.mod h1:ncTaGuXc5v7AuiVekeJ0Nwh8Bf4cudukoj0qM/15UZE=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/ebitengine/purego v0.10.1 h1:dewVBCBT2GaMu1SrNTYxQhgQBethzfhiwvZiLGP/qyY=
+github.com/ebitengine/purego v0.10.1/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
@@ -462,8 +457,8 @@ github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFr
 github.com/jcmturner/gofork v1.0.0/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o=
 github.com/jcmturner/gofork v1.7.6 h1:QH0l3hzAU1tfT3rZCnW5zXl+orbkNMMRGJfdJjHVETg=
 github.com/jcmturner/gofork v1.7.6/go.mod h1:1622LH6i/EZqLloHfE7IeZ0uEJwMSUyQ/nDd82IeqRo=
-github.com/jedib0t/go-pretty/v6 v6.7.8 h1:BVYrDy5DPBA3Qn9ICT+PokP9cvCv1KaHv2i+Hc8sr5o=
-github.com/jedib0t/go-pretty/v6 v6.7.8/go.mod h1:YwC5CE4fJ1HFUDeivSV1r//AmANFHyqczZk+U6BDALU=
+github.com/jedib0t/go-pretty/v6 v6.8.3 h1:yVSk5aemoYHCvcrtqyXklwqcgHQIQzmy/oUzFlmffSQ=
+github.com/jedib0t/go-pretty/v6 v6.8.3/go.mod h1:YwC5CE4fJ1HFUDeivSV1r//AmANFHyqczZk+U6BDALU=
 github.com/jellydator/ttlcache/v3 v3.1.0 h1:0gPFG0IHHP6xyUyXq+JaD8fwkDCqgqwohXNJBcYE71g=
 github.com/jellydator/ttlcache/v3 v3.1.0/go.mod h1:hi7MGFdMAwZna5n2tuvh63DvFLzVKySzCVW6+0gA2n4=
 github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=
@@ -521,8 +516,8 @@ github.com/lesnuages/snitch v0.6.0 h1:vOao32MdYDHYDcTAq2CKszDh6Dn8Bv1Gmgc8uVh193
 github.com/lesnuages/snitch v0.6.0/go.mod h1:RfXlAVJYL7gUoZ9VMMon4LqrPiAjC8x62Ntbse4a4s0=
 github.com/line/line-bot-sdk-go v7.8.0+incompatible h1:Uf9/OxV0zCVfqyvwZPH8CrdiHXXmMRa/L91G3btQblQ=
 github.com/line/line-bot-sdk-go v7.8.0+incompatible/go.mod h1:0RjLjJEAU/3GIcHkC3av6O4jInAbt25nnZVmOFUgDBg=
-github.com/lucasb-eyer/go-colorful v1.4.0 h1:UtrWVfLdarDgc44HcS7pYloGHJUjHV/4FwW4TvVgFr4=
-github.com/lucasb-eyer/go-colorful v1.4.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/lucasb-eyer/go-colorful v1.4.1 h1:1EO+WB73+EH8EVbzlrG3KLAfEypQWVHIBqlTf+2hNss=
+github.com/lucasb-eyer/go-colorful v1.4.1/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/lxn/win v0.0.0-20210218163916-a377121e959e h1:H+t6A/QJMbhCSEH5rAuRxh+CtW96g0Or0Fxa9IKr4uc=
 github.com/lxn/win v0.0.0-20210218163916-a377121e959e/go.mod h1:KxxjdtRkfNoYDCUP5ryK7XJJNTnpC8atvtmTheChOtk=
 github.com/mailgun/errors v0.4.0 h1:6LFBvod6VIW83CMIOT9sYNp28TCX0NejFPP4dSX++i8=
@@ -543,8 +538,8 @@ github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
-github.com/mattn/go-runewidth v0.0.23 h1:7ykA0T0jkPpzSvMS5i9uoNn2Xy3R383f9HDx3RybWcw=
-github.com/mattn/go-runewidth v0.0.23/go.mod h1:XBkDxAl56ILZc9knddidhrOlY5R/pDhgLpndooCuJAs=
+github.com/mattn/go-runewidth v0.0.24 h1:cpokDiIn0MGnhdHwuWnJBITySJ20QyNGnY2kR/ay2DU=
+github.com/mattn/go-runewidth v0.0.24/go.mod h1:XBkDxAl56ILZc9knddidhrOlY5R/pDhgLpndooCuJAs=
 github.com/mattn/go-sqlite3 v1.14.32 h1:JD12Ag3oLy1zQA+BNn74xRgaBbdhbNIDYvQUEuuErjs=
 github.com/mattn/go-sqlite3 v1.14.32/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
 github.com/mdlayher/genetlink v1.3.2 h1:KdrNKe+CTu+IbZnm/GVUMXSqBBLqcGpRDa0xkQy56gw=
@@ -578,8 +573,8 @@ github.com/moloch--/go-keystone v0.0.2 h1:xThbYs45CSzoDUz5kBZxAyTPIpK3t5M7NB1x+N
 github.com/moloch--/go-keystone v0.0.2/go.mod h1:kpGRJpw9b7Eq3MluHrba+GPKZhSyDrvhLULSwH5nGGM=
 github.com/moloch--/readline v0.0.0-20260129035512-cb5b3e87d51a h1:Q69DxLWF+Z8oIjuNbeKC6Xygk8Z4heWzzO79Io1cEYA=
 github.com/moloch--/readline v0.0.0-20260129035512-cb5b3e87d51a/go.mod h1:CwNkh9BmFBBCSO6mdDaNWb34rOqQsI9eYbxyqvOEazY=
-github.com/moloch--/sgn v0.0.5 h1:92GFaRpe+353uhqzFiNKXKgmTiD4dBxnvb8gd4MaV/g=
-github.com/moloch--/sgn v0.0.5/go.mod h1:FyWfCtdynywgLmVR71vTJztZ3WkGSkR91Y4EOijUutE=
+github.com/moloch--/sgn v0.1.2 h1:tWmhDNpiZfWBg5+3uPnfJDRBmB219TnVto/RESOqoFo=
+github.com/moloch--/sgn v0.1.2/go.mod h1:qrMzA8Tf9oiGZvWLaZvfKUetiUM61srSZdmq3gINies=
 github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=
 github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
@@ -678,8 +673,12 @@ github.com/sliverarmory/beignet v0.0.3 h1:ssR6AK9lirVulHZhQMyMmVAi0FcFwWxlh9LwKC
 github.com/sliverarmory/beignet v0.0.3/go.mod h1:xXfTKBJqFBY/pakRFwJ+5+oGiSlg2CiCVUg/76kW1H4=
 github.com/sliverarmory/malasada v0.0.3 h1:b2KG2NhQVfBIIrbP8rGJwmdh7o8LH6NKYKH1DF4No1U=
 github.com/sliverarmory/malasada v0.0.3/go.mod h1:F96IgTOoX72FU995F+Jip0ni8Z5sXiYOwfmlRGobJkQ=
-github.com/sliverarmory/reflektor v0.0.2 h1:nrEEFXrYiYFLCqyMpOJpe4RsY0Pu3tc1CvwChsNoAq4=
-github.com/sliverarmory/reflektor v0.0.2/go.mod h1:Rw7qTWQQlCM3YTxxeuklFt3Q+kh1Ytlmzg5UVw1Nhkg=
+github.com/sliverarmory/opfor v0.0.1 h1:V4RMIO3zG3nCdWGm0R8IkPtlqQVoZyYhQ8zNiQdq0AI=
+github.com/sliverarmory/opfor v0.0.1/go.mod h1:xrLTsijVqxIVtYxPsDVuXeFgPlHXVkcfXMuajseD9ng=
+github.com/sliverarmory/opfor v0.0.2 h1:rqckVkt2zJsJXSZGC6BnY3T/73CfX/Kv8kbBUF5Cb50=
+github.com/sliverarmory/opfor v0.0.2/go.mod h1:xrLTsijVqxIVtYxPsDVuXeFgPlHXVkcfXMuajseD9ng=
+github.com/sliverarmory/reflektor v0.0.8 h1:0FttcH5GZcKq571oRns3gKTyJNU2T+c3XP/sbFIAYRY=
+github.com/sliverarmory/reflektor v0.0.8/go.mod h1:+lCyQy0xHVqx6D5nYbcz5XIDVtAGbDMIMU0Yc6Brb1s=
 github.com/sliverarmory/wasm-donut v0.0.3 h1:sldbfAsz1YziULlhDKpU3DY/+/dAfv5gl26qSqHIpzE=
 github.com/sliverarmory/wasm-donut v0.0.3/go.mod h1:D6OLBZBfFm2Tk857vqGqFS9uUi4CXqnqHxKqtONllVk=
 github.com/sony/sonyflake v1.0.0 h1:MpU6Ro7tfXwgn2l5eluf9xQvQJDROTBImNCfRXn/YeM=
@@ -927,7 +926,6 @@ golang.org/x/sys v0.0.0-20201018230417-eeed37f84f13/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210217105451-b926d437f341/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211025201205-69cdffdb9359/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -945,8 +943,8 @@ golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.46.0 h1:noSf2Fq6F8DBgS+LysIkx7rIExoNHJsxOAtPp4rthXw=
-golang.org/x/sys v0.46.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
+golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=

implant/go-mod

@@ -4,14 +4,14 @@ go 1.26.6
 
 require (
 	filippo.io/age v1.1.1
-	github.com/Binject/universal v0.0.0-20220519011857-bea739e758c0
 	github.com/Ne0nd0g/go-clr v1.0.3
+	github.com/ebitengine/purego v0.10.1
 	github.com/gofrs/uuid v4.0.0+incompatible
 	github.com/hashicorp/yamux v0.1.2
 	github.com/kbinani/screenshot v0.0.0-20191211154542-3a185f1ce18f
 	github.com/lesnuages/go-winio v0.4.19
 	github.com/miekg/dns v1.1.50
-	github.com/sliverarmory/reflektor v0.0.2
+	github.com/sliverarmory/reflektor v0.0.8
 	github.com/stretchr/testify v1.8.4
 	github.com/tetratelabs/wazero v1.7.1
 	github.com/things-go/go-socks5 v0.0.4
@@ -25,11 +25,8 @@ require (
 )
 
 require (
-	github.com/Binject/debug v0.0.0-20210225042342-c9b8b45728d2 // indirect
 	github.com/BurntSushi/xgb v0.0.0-20210121224620-deaf085860bc // indirect
 	github.com/Microsoft/go-winio v0.6.0 // indirect
-	github.com/awgh/cppgo v0.0.0-20210224085512-3d24bca8edc0 // indirect
-	github.com/awgh/rawreader v0.0.0-20200626064944-56820a9c6da4 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/gen2brain/shm v0.0.0-20200228170931-49f9650110c5 // indirect
 	github.com/google/btree v1.1.2 // indirect

implant/go-sum

@@ -1,22 +1,16 @@
 filippo.io/age v1.1.1 h1:pIpO7l151hCnQ4BdyBujnGP2YlUo0uj6sAVNHGBvXHg=
 filippo.io/age v1.1.1/go.mod h1:l03SrzDUrBkdBx8+IILdnn2KZysqQdbEBUQ4p3sqEQE=
-github.com/Binject/debug v0.0.0-20210225042342-c9b8b45728d2 h1:8kQNJC9AxAaNs0JkXnWUfbNeDnIO1QLYYWjYqC6JEE4=
-github.com/Binject/debug v0.0.0-20210225042342-c9b8b45728d2/go.mod h1:QzgxDLY/qdKlvnbnb65eqTedhvQPbaSP2NqIbcuKvsQ=
-github.com/Binject/universal v0.0.0-20220519011857-bea739e758c0 h1:1sdnMvqxxlMXsu8ku/Xrh6gi3V40ykksst5fd0lfWnc=
-github.com/Binject/universal v0.0.0-20220519011857-bea739e758c0/go.mod h1:J3XDRlam5pPYca3i6EqgQ35GCCEoyxafpCbLkta0ozc=
 github.com/BurntSushi/xgb v0.0.0-20210121224620-deaf085860bc h1:7D+Bh06CRPCJO3gr2F7h1sriovOZ8BMhca2Rg85c2nk=
 github.com/BurntSushi/xgb v0.0.0-20210121224620-deaf085860bc/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/Microsoft/go-winio v0.6.0 h1:slsWYD/zyx7lCXoZVlvQrj0hPTM1HI4+v1sIda2yDvg=
 github.com/Microsoft/go-winio v0.6.0/go.mod h1:cTAf44im0RAYeL23bpB+fzCyDH2MJiz2BO69KH/soAE=
 github.com/Ne0nd0g/go-clr v1.0.3 h1:xt92wwuqY23ZSC7RuHD3mKu3K22Bk5NNbxI803vojK4=
 github.com/Ne0nd0g/go-clr v1.0.3/go.mod h1:TKYSQ/5xT25EvBUttAlUrzpR8yHuI0qTRK495I5xG/I=
-github.com/awgh/cppgo v0.0.0-20210224085512-3d24bca8edc0 h1:JjwxKkxzcBk4k8147g0eBQRCIy0UN1Be8AAv6RaIj4Q=
-github.com/awgh/cppgo v0.0.0-20210224085512-3d24bca8edc0/go.mod h1:IbERvuyb387Hppp8hX0SQTFt/mkej8+OhuS8L0nC2CI=
-github.com/awgh/rawreader v0.0.0-20200626064944-56820a9c6da4 h1:cIAK2NNf2yafdgpFRNJrgZMwvy61BEVpGoHc2n4/yWs=
-github.com/awgh/rawreader v0.0.0-20200626064944-56820a9c6da4/go.mod h1:SalMPBCab3yuID8nIhLfzwoBV+lBRyaC7NhuN8qL8xE=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/ebitengine/purego v0.10.1 h1:dewVBCBT2GaMu1SrNTYxQhgQBethzfhiwvZiLGP/qyY=
+github.com/ebitengine/purego v0.10.1/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
 github.com/gen2brain/shm v0.0.0-20200228170931-49f9650110c5 h1:Y5Q2mEwfzjMt5+3u70Gtw93ZOu2UuPeeeTBDntF7FoY=
 github.com/gen2brain/shm v0.0.0-20200228170931-49f9650110c5/go.mod h1:uF6rMu/1nvu+5DpiRLwusA6xB8zlkNoGzKn8lmYONUo=
 github.com/gofrs/uuid v4.0.0+incompatible h1:1SD/1F5pU8p29ybwgQSwpQk+mwdRrXCYuPhW6m+TnJw=
@@ -43,12 +37,11 @@ github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
-github.com/sliverarmory/reflektor v0.0.2 h1:nrEEFXrYiYFLCqyMpOJpe4RsY0Pu3tc1CvwChsNoAq4=
-github.com/sliverarmory/reflektor v0.0.2/go.mod h1:Rw7qTWQQlCM3YTxxeuklFt3Q+kh1Ytlmzg5UVw1Nhkg=
+github.com/sliverarmory/reflektor v0.0.8 h1:0FttcH5GZcKq571oRns3gKTyJNU2T+c3XP/sbFIAYRY=
+github.com/sliverarmory/reflektor v0.0.8/go.mod h1:+lCyQy0xHVqx6D5nYbcz5XIDVtAGbDMIMU0Yc6Brb1s=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/tetratelabs/wazero v1.7.1 h1:QtSfd6KLc41DIMpDYlJdoMc6k7QTN246DM2+n2Y/Dx8=
@@ -82,7 +75,6 @@ golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201018230417-eeed37f84f13/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210217105451-b926d437f341/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

implant/sliver/extension/README.md

@@ -2,13 +2,15 @@
 
 ## Overview
 
-Extension host runtime allowing implants to load optional capabilities. Manages sandboxing, lifecycle, and communication with extension modules. Runtime components handle extension darwin, extension windows, memfs, and WASM for implant-side extension features.
+Extension host runtime allowing implants to load optional capabilities. Manages native shared-library and WASM extension lifecycle, registration, and communication across supported implant platforms.
 
 ## Go Files
 
-- `extension.go` – Core extension host that loads modules and brokers RPC communication.
-- `extension_darwin.go` – macOS-specific stubs and build tags for extension support.
-- `extension_windows.go` – Windows-specific integration for loading and managing extensions.
+- `extension.go` – Thread-safe native extension registry and single-flight loading lifecycle.
+- `extension_darwin.go` – macOS constructor for the shared Reflektor-backed Unix loader.
+- `extension_linux.go` – Linux constructor for the shared Reflektor-backed Unix loader.
+- `extension_unix.go` – CGO-free macOS/Linux loading, export invocation, and callback bridge.
+- `extension_windows.go` – Windows-specific Reflektor integration for loading and invoking extensions.
 - `memfs.go` – Implements the in-memory filesystem backing extension assets.
 - `memfs_test.go` *(tests)* – Tests the in-memory filesystem behavior for extensions.
 - `wasm.go` – Sets up the WASM runtime for implant extensions and handles module lifecycle.

implant/sliver/extension/extension.go

@@ -20,13 +20,31 @@ package extension
 
 import (
 	"errors"
+	"sync"
 
 	// {{if .Config.Debug}}
 	"log"
 	// {{end}}
 )
 
-var extensions map[string]Extension
+const (
+	// Success indicates that a native extension callback completed successfully.
+	Success = 0
+	// Failure indicates that a native extension callback failed.
+	Failure = 1
+)
+
+var (
+	extensions     map[string]Extension
+	extensionLoads map[string]*extensionLoad
+	extensionsMu   sync.RWMutex
+)
+
+type extensionLoad struct {
+	done    chan struct{}
+	err     error
+	waiters int
+}
 
 type Extension interface {
 	Load() error
@@ -36,10 +54,47 @@ type Extension interface {
 }
 
 func Add(e Extension) {
+	extensionsMu.Lock()
+	defer extensionsMu.Unlock()
 	extensions[e.GetID()] = e
 }
 
+// Register loads an extension once per ID and publishes it only after loading
+// succeeds. Concurrent registrations for the same ID wait for the in-flight
+// load instead of mapping duplicate libraries and allocating duplicate callback
+// trampolines.
+func Register(e Extension) error {
+	id := e.GetID()
+	extensionsMu.Lock()
+	if _, found := extensions[id]; found {
+		extensionsMu.Unlock()
+		return nil
+	}
+	if loading, found := extensionLoads[id]; found {
+		loading.waiters++
+		extensionsMu.Unlock()
+		<-loading.done
+		return loading.err
+	}
+	loading := &extensionLoad{done: make(chan struct{})}
+	extensionLoads[id] = loading
+	extensionsMu.Unlock()
+
+	err := e.Load()
+	extensionsMu.Lock()
+	if err == nil {
+		extensions[id] = e
+	}
+	loading.err = err
+	close(loading.done)
+	delete(extensionLoads, id)
+	extensionsMu.Unlock()
+	return err
+}
+
 func List() []string {
+	extensionsMu.RLock()
+	defer extensionsMu.RUnlock()
 	var extList []string
 	for id := range extensions {
 		extList = append(extList, id)
@@ -48,10 +103,15 @@ func List() []string {
 }
 
 func Run(extID string, funcName string, arguments []byte, callback func([]byte)) error {
-	if ext, found := extensions[extID]; found {
+	extensionsMu.RLock()
+	ext, found := extensions[extID]
+	extensionsMu.RUnlock()
+	if found {
 		return ext.Call(funcName, arguments, callback)
 	}
 	// {{if .Config.Debug}}
+	extensionsMu.RLock()
+	defer extensionsMu.RUnlock()
 	for id, ext := range extensions {
 		log.Printf("Extension '%s' (%s)", id, ext.GetArch())
 	}
@@ -61,4 +121,5 @@ func Run(extID string, funcName string, arguments []byte, callback func([]byte))
 
 func init() {
 	extensions = make(map[string]Extension)
+	extensionLoads = make(map[string]*extensionLoad)
 }

implant/sliver/extension/extension_darwin.go

@@ -18,113 +18,10 @@ package extension
 	along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-import (
-	"bytes"
-	"runtime"
-	"sync"
-	"unsafe"
-
-	// {{if .Config.Debug}}
-	"log"
-	// {{end}}
-
-	"github.com/Binject/universal"
-)
-
-type DarwinExtension struct {
-	id          string
-	data        []byte
-	module      *universal.Library
-	arch        string
-	serverStore bool
-	init        string
-	sync.Mutex
-}
-
-type extensionArguments struct {
-	inDataSize  uintptr
-	inDataBuff  uintptr
-	outDataSize uintptr
-	outDataBuff uintptr
-}
+// DarwinExtension is a Reflektor-backed native macOS extension.
+type DarwinExtension = UnixExtension
 
+// NewDarwinExtension creates a native macOS extension backed by Reflektor.
 func NewDarwinExtension(data []byte, id string, arch string, init string) *DarwinExtension {
-	return &DarwinExtension{
-		id:   id,
-		data: data,
-		arch: arch,
-		init: init,
-	}
-}
-
-func (d *DarwinExtension) GetID() string {
-	return d.id
-}
-
-func (d *DarwinExtension) GetArch() string {
-	return d.arch
-}
-
-func (d *DarwinExtension) Load() error {
-	var err error
-	d.Lock()
-	defer d.Unlock()
-	loader, err := universal.NewLoader()
-	if err != nil {
-		return err
-	}
-	d.module, err = loader.LoadLibrary(d.id, &d.data)
-	if err != nil {
-		return err
-	}
-	if d.init != "" {
-		if _, errInit := d.module.Call(d.init); errInit != nil {
-			return errInit
-		}
-	}
-	return nil
-}
-
-func (d *DarwinExtension) Call(export string, arguments []byte, onFinish func([]byte)) error {
-	// We currently have 2 issues with Darwin extensions:
-	// - cppgo (used by universal) fucks up when calling a function with more than 1 argument
-	// - we don't have Go callback support for the loaded extension,
-	// so we have to wait for the call to finish to get the results
-	// To circumvent these issues, we pass the extensionArguments structure
-	// as the only argument to the call, so we can pass args in and extract
-	// the result at the same time.
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-	extArgs := extensionArguments{}
-	if len(arguments) > 0 {
-		extArgs.inDataBuff = uintptr(unsafe.Pointer(&arguments[0]))
-		extArgs.inDataSize = uintptr(uint64(len(arguments)))
-	}
-	// {{if .Config.Debug}}
-	log.Printf("Calling %s, arg size: %d\n", export, extArgs.inDataSize)
-	// {{end}}
-	d.Lock()
-	defer d.Unlock()
-	_, err := d.module.Call(export, uintptr(unsafe.Pointer(&extArgs)))
-	if err != nil {
-		return err
-	}
-	// {{if .Config.Debug}}
-	log.Printf("%s done!\n", export)
-	// {{end}}
-	outData := new(bytes.Buffer)
-	outDataSize := int(extArgs.outDataSize)
-	// {{if .Config.Debug}}
-	log.Printf("Out data size: %d\n", outDataSize)
-	// {{end}}
-	for i := 0; i < outDataSize; i++ {
-		b := (*byte)(unsafe.Pointer(uintptr(i) + extArgs.outDataBuff))
-		outData.WriteByte(*b)
-	}
-	// We currently don't have a way to trigger a callback
-	// in the loaded code for Darwin.
-	if outData.Len() > 0 {
-		onFinish(outData.Bytes())
-	}
-	return nil
+	return newUnixExtension(data, id, arch, init)
 }

implant/sliver/extension/extension_linux.go

@@ -0,0 +1,29 @@
+//go:build 386 || amd64 || arm64
+
+package extension
+
+/*
+	Sliver Implant Framework
+	Copyright (C) 2021  Bishop Fox
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+// LinuxExtension is a Reflektor-backed native Linux extension.
+type LinuxExtension = UnixExtension
+
+// NewLinuxExtension creates a native Linux extension backed by Reflektor.
+func NewLinuxExtension(data []byte, id string, arch string, init string) *LinuxExtension {
+	return newUnixExtension(data, id, arch, init)
+}

implant/sliver/extension/extension_linux_unsupported.go

@@ -0,0 +1,55 @@
+//go:build !(386 || amd64 || arm64)
+
+package extension
+
+/*
+	Sliver Implant Framework
+	Copyright (C) 2021  Bishop Fox
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import "errors"
+
+// LinuxExtension reports unsupported native-extension operations on Linux
+// architectures without a Reflektor backend.
+type LinuxExtension struct {
+	id   string
+	arch string
+}
+
+// NewLinuxExtension creates an unsupported-architecture extension placeholder.
+func NewLinuxExtension(_ []byte, id string, arch string, _ string) *LinuxExtension {
+	return &LinuxExtension{id: id, arch: arch}
+}
+
+// GetID returns the extension identifier.
+func (l *LinuxExtension) GetID() string {
+	return l.id
+}
+
+// GetArch returns the extension architecture.
+func (l *LinuxExtension) GetArch() string {
+	return l.arch
+}
+
+// Load reports that native extensions are unsupported on this architecture.
+func (l *LinuxExtension) Load() error {
+	return errors.New("{{if .Config.Debug}} native extensions are not supported on this Linux architecture {{end}}")
+}
+
+// Call reports that native extensions are unsupported on this architecture.
+func (l *LinuxExtension) Call(_ string, _ []byte, _ func([]byte)) error {
+	return errors.New("{{if .Config.Debug}} native extensions are not supported on this Linux architecture {{end}}")
+}

implant/sliver/extension/extension_test.go

@@ -0,0 +1,236 @@
+package extension
+
+import (
+	"errors"
+	"fmt"
+	"runtime"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+)
+
+type testExtension struct {
+	id string
+}
+
+func (e *testExtension) Load() error {
+	return nil
+}
+
+func (e *testExtension) Call(_ string, arguments []byte, callback func([]byte)) error {
+	callback(arguments)
+	return nil
+}
+
+func (e *testExtension) GetID() string {
+	return e.id
+}
+
+func (e *testExtension) GetArch() string {
+	return "test"
+}
+
+type registeringTestExtension struct {
+	testExtension
+	loadCalls *atomic.Int32
+	loadErr   error
+	started   chan struct{}
+	release   chan struct{}
+}
+
+func (e *registeringTestExtension) Load() error {
+	e.loadCalls.Add(1)
+	if e.started != nil {
+		close(e.started)
+	}
+	if e.release != nil {
+		<-e.release
+	}
+	return e.loadErr
+}
+
+func resetExtensionRegistry(t *testing.T) {
+	t.Helper()
+	extensionsMu.Lock()
+	previousExtensions := extensions
+	previousLoads := extensionLoads
+	extensions = make(map[string]Extension)
+	extensionLoads = make(map[string]*extensionLoad)
+	extensionsMu.Unlock()
+	t.Cleanup(func() {
+		extensionsMu.Lock()
+		extensions = previousExtensions
+		extensionLoads = previousLoads
+		extensionsMu.Unlock()
+	})
+}
+
+func waitForExtensionWaiters(t *testing.T, extensionID string, want int) {
+	t.Helper()
+	deadline := time.Now().Add(time.Second)
+	for {
+		extensionsMu.RLock()
+		loading := extensionLoads[extensionID]
+		got := 0
+		if loading != nil {
+			got = loading.waiters
+		}
+		extensionsMu.RUnlock()
+		if got == want {
+			return
+		}
+		if time.Now().After(deadline) {
+			t.Fatalf("registration waiters = %d, want %d", got, want)
+		}
+		runtime.Gosched()
+	}
+}
+
+func TestExtensionRegistryConcurrentAccess(t *testing.T) {
+	resetExtensionRegistry(t)
+
+	const count = 64
+	errCh := make(chan error, count)
+	var waitGroup sync.WaitGroup
+	for index := 0; index < count; index++ {
+		index := index
+		waitGroup.Add(1)
+		go func() {
+			defer waitGroup.Done()
+			id := fmt.Sprintf("extension-%d", index)
+			Add(&testExtension{id: id})
+			argument := []byte(id)
+			if err := Run(id, "run", argument, func(output []byte) {
+				if string(output) != id {
+					errCh <- fmt.Errorf("callback output = %q, want %q", output, id)
+				}
+			}); err != nil {
+				errCh <- err
+			}
+			_ = List()
+		}()
+	}
+	waitGroup.Wait()
+	close(errCh)
+	for err := range errCh {
+		t.Error(err)
+	}
+
+	if got := len(List()); got != count {
+		t.Fatalf("List returned %d extensions, want %d", got, count)
+	}
+}
+
+func TestRegisterLoadsExtensionOnlyOnce(t *testing.T) {
+	resetExtensionRegistry(t)
+
+	const extensionID = "duplicate-extension"
+	var loadCalls atomic.Int32
+	started := make(chan struct{})
+	release := make(chan struct{})
+	first := &registeringTestExtension{
+		testExtension: testExtension{id: extensionID},
+		loadCalls:     &loadCalls,
+		started:       started,
+		release:       release,
+	}
+
+	const registrations = 16
+	errorsCh := make(chan error, registrations)
+	go func() {
+		errorsCh <- Register(first)
+	}()
+	<-started
+	for index := 1; index < registrations; index++ {
+		go func() {
+			errorsCh <- Register(&registeringTestExtension{
+				testExtension: testExtension{id: extensionID},
+				loadCalls:     &loadCalls,
+			})
+		}()
+	}
+	waitForExtensionWaiters(t, extensionID, registrations-1)
+	select {
+	case err := <-errorsCh:
+		t.Fatalf("Register returned before the in-flight load completed: %v", err)
+	default:
+	}
+	close(release)
+	for index := 0; index < registrations; index++ {
+		if err := <-errorsCh; err != nil {
+			t.Fatalf("Register returned an error: %v", err)
+		}
+	}
+
+	if got := loadCalls.Load(); got != 1 {
+		t.Fatalf("Load called %d times, want 1", got)
+	}
+	if got := List(); len(got) != 1 || got[0] != extensionID {
+		t.Fatalf("List returned %q, want [%q]", got, extensionID)
+	}
+
+	if err := Register(&registeringTestExtension{
+		testExtension: testExtension{id: extensionID},
+		loadCalls:     &loadCalls,
+	}); err != nil {
+		t.Fatalf("repeat Register returned an error: %v", err)
+	}
+	if got := loadCalls.Load(); got != 1 {
+		t.Fatalf("repeat Register called Load; total calls = %d, want 1", got)
+	}
+}
+
+func TestRegisterRetriesAfterFailedLoad(t *testing.T) {
+	resetExtensionRegistry(t)
+
+	const extensionID = "retry-extension"
+	var loadCalls atomic.Int32
+	wantErr := errors.New("load failed")
+	started := make(chan struct{})
+	release := make(chan struct{})
+	const registrations = 8
+	errorsCh := make(chan error, registrations)
+	go func() {
+		errorsCh <- Register(&registeringTestExtension{
+			testExtension: testExtension{id: extensionID},
+			loadCalls:     &loadCalls,
+			loadErr:       wantErr,
+			started:       started,
+			release:       release,
+		})
+	}()
+	<-started
+	for index := 1; index < registrations; index++ {
+		go func() {
+			errorsCh <- Register(&registeringTestExtension{
+				testExtension: testExtension{id: extensionID},
+				loadCalls:     &loadCalls,
+				loadErr:       errors.New("unexpected follower load"),
+			})
+		}()
+	}
+	waitForExtensionWaiters(t, extensionID, registrations-1)
+	close(release)
+	for index := 0; index < registrations; index++ {
+		if err := <-errorsCh; !errors.Is(err, wantErr) {
+			t.Fatalf("Register error = %v, want shared error %v", err, wantErr)
+		}
+	}
+	if got := loadCalls.Load(); got != 1 {
+		t.Fatalf("failed Load called %d times, want 1", got)
+	}
+	if got := List(); len(got) != 0 {
+		t.Fatalf("failed extension was published: %q", got)
+	}
+
+	if err := Register(&registeringTestExtension{
+		testExtension: testExtension{id: extensionID},
+		loadCalls:     &loadCalls,
+	}); err != nil {
+		t.Fatalf("retry Register returned an error: %v", err)
+	}
+	if got := loadCalls.Load(); got != 2 {
+		t.Fatalf("Load called %d times, want 2", got)
+	}
+}

implant/sliver/extension/extension_unix.go

@@ -0,0 +1,174 @@
+//go:build (darwin && (amd64 || arm64)) || (linux && (386 || amd64 || arm64))
+
+package extension
+
+/*
+	Sliver Implant Framework
+	Copyright (C) 2021  Bishop Fox
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import (
+	"errors"
+	"runtime"
+	"sync"
+	"sync/atomic"
+	"unsafe"
+
+	// {{if .Config.Debug}}
+	"log"
+	// {{end}}
+
+	"github.com/ebitengine/purego"
+	reflektor "github.com/sliverarmory/reflektor/native"
+)
+
+type extensionCall struct {
+	onFinish func([]byte)
+}
+
+// UnixExtension is a Reflektor-backed native extension for supported Unix
+// targets.
+type UnixExtension struct {
+	id       string
+	data     []byte
+	module   *reflektor.Library
+	arch     string
+	init     string
+	callback uintptr
+	active   atomic.Pointer[extensionCall]
+	sync.Mutex
+}
+
+func newUnixExtension(data []byte, id string, arch string, init string) *UnixExtension {
+	return &UnixExtension{
+		id:   id,
+		data: data,
+		arch: arch,
+		init: init,
+	}
+}
+
+// GetID returns the extension identifier.
+func (u *UnixExtension) GetID() string {
+	return u.id
+}
+
+// GetArch returns the extension architecture.
+func (u *UnixExtension) GetArch() string {
+	return u.arch
+}
+
+// Load maps the extension and invokes its optional initialization export.
+func (u *UnixExtension) Load() error {
+	if len(u.data) == 0 {
+		return errors.New("{{if .Config.Debug}} extension data is empty {{end}}")
+	}
+
+	u.Lock()
+	defer u.Unlock()
+	if u.module != nil {
+		return errors.New("{{if .Config.Debug}} module already loaded {{end}}")
+	}
+
+	module, err := reflektor.LoadLibrary(u.data)
+	if err != nil {
+		return err
+	}
+	if u.init != "" {
+		// {{if .Config.Debug}}
+		log.Printf("Calling %s\n", u.init)
+		// {{end}}
+		if err := module.CallExport(u.init); err != nil {
+			_ = module.Close()
+			return err
+		}
+	}
+
+	callback, err := newUnixExtensionCallback(u)
+	if err != nil {
+		_ = module.Close()
+		return err
+	}
+	u.callback = callback
+	u.module = module
+	return nil
+}
+
+// Call invokes an extension export with the native extension callback ABI.
+func (u *UnixExtension) Call(export string, arguments []byte, onFinish func([]byte)) error {
+	u.Lock()
+	defer u.Unlock()
+	if u.module == nil {
+		return errors.New("{{if .Config.Debug}} module not loaded {{end}}")
+	}
+	if uint64(len(arguments)) > uint64(^uint32(0)) {
+		return errors.New("{{if .Config.Debug}} extension arguments exceed uint32 size {{end}}")
+	}
+
+	var argumentsPtr uintptr
+	if len(arguments) > 0 {
+		argumentsPtr = uintptr(unsafe.Pointer(&arguments[0]))
+	}
+	argumentsSize := uintptr(uint32(len(arguments)))
+	call := &extensionCall{onFinish: onFinish}
+	u.active.Store(call)
+	defer u.active.Store(nil)
+
+	// {{if .Config.Debug}}
+	log.Printf("Calling %s, arguments addr: 0x%08x, args size: %08x\n", export, argumentsPtr, argumentsSize)
+	// {{end}}
+	_, err := u.module.CallExportWithArgs(export, argumentsPtr, argumentsSize, u.callback)
+	runtime.KeepAlive(arguments)
+	runtime.KeepAlive(call)
+	return err
+}
+
+func newUnixExtensionCallback(extension *UnixExtension) (callback uintptr, err error) {
+	defer func() {
+		if recovered := recover(); recovered != nil {
+			// {{if .Config.Debug}}
+			log.Printf("Failed to create extension callback: %v\n", recovered)
+			// {{end}}
+			callback = 0
+			err = errors.New("{{if .Config.Debug}} failed to create extension callback {{end}}")
+		}
+	}()
+	return purego.NewCallback(extension.extensionCallback), nil
+}
+
+func (u *UnixExtension) extensionCallback(data unsafe.Pointer, dataLen int32) (result int32) {
+	result = Failure
+	defer func() {
+		if recover() != nil {
+			result = Failure
+		}
+	}()
+
+	call := u.active.Load()
+	if call == nil || call.onFinish == nil {
+		return Failure
+	}
+	if dataLen == 0 {
+		return Success
+	}
+	if data == nil || dataLen < 0 {
+		return Failure
+	}
+
+	output := append([]byte(nil), unsafe.Slice((*byte)(data), int(dataLen))...)
+	call.onFinish(output)
+	return Success
+}

implant/sliver/extension/extension_unix_test.go

@@ -0,0 +1,59 @@
+//go:build (darwin && (amd64 || arm64)) || (linux && (386 || amd64 || arm64))
+
+package extension
+
+import (
+	"bytes"
+	"testing"
+	"unsafe"
+)
+
+func TestUnixExtensionCallbackCopiesOutput(t *testing.T) {
+	extension := &UnixExtension{}
+	var got []byte
+	call := &extensionCall{onFinish: func(output []byte) {
+		got = output
+	}}
+	extension.active.Store(call)
+	defer extension.active.Store(nil)
+
+	source := []byte("extension output")
+	result := extension.extensionCallback(unsafe.Pointer(&source[0]), int32(len(source)))
+	if result != Success {
+		t.Fatalf("extension callback returned %d, want %d", result, Success)
+	}
+	source[0] = 'X'
+	if !bytes.Equal(got, []byte("extension output")) {
+		t.Fatalf("extension callback output = %q, want an independent copy", got)
+	}
+}
+
+func TestUnixExtensionCallbackRejectsInvalidCalls(t *testing.T) {
+	extension := &UnixExtension{}
+	if result := extension.extensionCallback(nil, 1); result != Failure {
+		t.Fatalf("callback without an active call returned %d, want %d", result, Failure)
+	}
+
+	extension.active.Store(&extensionCall{onFinish: func([]byte) {}})
+	defer extension.active.Store(nil)
+	if result := extension.extensionCallback(nil, 1); result != Failure {
+		t.Fatalf("callback with a nil data pointer returned %d, want %d", result, Failure)
+	}
+	source := byte(0)
+	if result := extension.extensionCallback(unsafe.Pointer(&source), -1); result != Failure {
+		t.Fatalf("callback with a negative length returned %d, want %d", result, Failure)
+	}
+}
+
+func TestUnixExtensionCallbackContainsPanics(t *testing.T) {
+	extension := &UnixExtension{}
+	extension.active.Store(&extensionCall{onFinish: func([]byte) {
+		panic("callback failed")
+	}})
+	defer extension.active.Store(nil)
+
+	source := []byte("output")
+	if result := extension.extensionCallback(unsafe.Pointer(&source[0]), int32(len(source))); result != Failure {
+		t.Fatalf("panicking callback returned %d, want %d", result, Failure)
+	}
+}

implant/sliver/extension/extension_windows.go

@@ -31,11 +31,6 @@ import (
 	reflektor "github.com/sliverarmory/reflektor/memmod"
 )
 
-const (
-	Success = 0
-	Failure = 1
-)
-
 type WindowsExtension struct {
 	id     string
 	data   []byte

implant/sliver/handlers/README.md

@@ -2,16 +2,18 @@
 
 ## Overview
 
-Runtime message handlers that react to server instructions. Dispatches inbound RPC messages to feature-specific executors. Runtime components handle extensions WASM, handlers wireguard, handlers darwin, and handlers generic for implant-side handlers features.
+Runtime message handlers that react to server instructions. Dispatches inbound RPC messages to feature-specific executors, including native and WASM extension lifecycle requests.
 
 ## Go Files
 
 - `extensions-wasm.go` – Routes extension-related RPC messages to the WASM runtime.
+- `handlers_extensions.go` – Shared Windows, macOS, and Linux native extension registration, invocation, and listing handlers.
 - `handlers-wireguard.go` – Handles WireGuard control messages and state updates.
 - `handlers.go` – Registers core handler functions and shared dispatch utilities.
 - `handlers_darwin.go` – macOS-specific handler bindings and feature toggles.
 - `handlers_generic.go` – Generic handler implementations used when no platform specialization is required.
 - `handlers_linux.go` – Linux-focused handler logic and build tags.
+- `handlers_unix.go` – Shared macOS and Linux permission-change handlers.
 - `handlers_windows.go` – Windows-specific handler implementations.
 - `kill-handlers.go` – Processes kill commands for sessions and tasks in a platform-agnostic way.
 - `kill-handlers_windows.go` – Windows-specific kill command handling.

implant/sliver/handlers/handlers.go

@@ -444,12 +444,13 @@ func cdHandler(data []byte, resp RPCResponse) {
 		return
 	}
 
-	os.Chdir(cdReq.Path)
-	dir, err := os.Getwd()
-	pwd := &sliverpb.Pwd{Path: dir}
-	if err != nil {
-		resp([]byte{}, err)
-		return
+	chdirErr := os.Chdir(cdReq.Path)
+	dir, getwdErr := os.Getwd()
+	pwd := &sliverpb.Pwd{Path: dir, Response: &commonpb.Response{}}
+	if chdirErr != nil {
+		pwd.Response.Err = chdirErr.Error()
+	} else if getwdErr != nil {
+		pwd.Response.Err = getwdErr.Error()
 	}
 
 	// {{if .Config.Debug}}
@@ -984,7 +985,7 @@ func extractFiles(data []byte, path string, overwrite bool) (int, int, error) {
 					return filesWritten, filesSkipped, err
 				}
 			}
-			file, err := os.OpenFile(fileName, os.O_CREATE|os.O_RDWR, os.FileMode(header.Mode))
+			file, err := os.OpenFile(fileName, os.O_CREATE|os.O_RDWR|os.O_TRUNC, os.FileMode(header.Mode))
 			if err != nil {
 				file.Close()
 				return filesWritten, filesSkipped, err

implant/sliver/handlers/handlers_bof.go

@@ -0,0 +1,62 @@
+//go:build linux || darwin || windows
+
+package handlers
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/sliverarmory/reflektor/bof"
+)
+
+type bofObject interface {
+	Execute([]byte) ([]bof.Output, error)
+	Close() error
+}
+
+type bofLoadFunc func([]byte, bof.LoadOptions) (bofObject, error)
+
+type bofExecuteFunc func([]byte, string, []byte) ([]bof.Output, error)
+
+func loadReflektorBOF(data []byte, options bof.LoadOptions) (bofObject, error) {
+	if options.EntryPoint == "" {
+		return bof.Load(data)
+	}
+	return bof.LoadWithOptions(data, options)
+}
+
+func executeBOF(data []byte, entryPoint string, args []byte) ([]bof.Output, error) {
+	return executeBOFWithLoader(data, entryPoint, args, loadReflektorBOF)
+}
+
+func executeBOFWithLoader(data []byte, entryPoint string, args []byte, load bofLoadFunc) (outputs []bof.Output, err error) {
+	options := bof.LoadOptions{}
+	if !isDefaultBOFEntryPoint(entryPoint) {
+		options.EntryPoint = entryPoint
+	}
+
+	object, err := load(data, options)
+	if err != nil {
+		return nil, fmt.Errorf("load BOF: %w", err)
+	}
+	defer func() {
+		if closeErr := object.Close(); closeErr != nil {
+			err = errors.Join(err, fmt.Errorf("close BOF: %w", closeErr))
+		}
+	}()
+
+	outputs, executeErr := object.Execute(args)
+	if executeErr != nil {
+		err = fmt.Errorf("execute BOF: %w", executeErr)
+	}
+	return outputs, err
+}
+
+func isDefaultBOFEntryPoint(entryPoint string) bool {
+	switch entryPoint {
+	case "", "go", "_go", "coffee", "_coffee":
+		return true
+	default:
+		return false
+	}
+}

implant/sliver/handlers/handlers_bof_test.go

@@ -0,0 +1,120 @@
+//go:build linux || darwin || windows
+
+package handlers
+
+import (
+	"bytes"
+	"errors"
+	"strings"
+	"testing"
+
+	"github.com/sliverarmory/reflektor/bof"
+)
+
+type fakeBOFObject struct {
+	outputs      []bof.Output
+	executeErr   error
+	closeErr     error
+	executeArgs  []byte
+	executeCalls int
+	closeCalls   int
+}
+
+func (object *fakeBOFObject) Execute(args []byte) ([]bof.Output, error) {
+	object.executeCalls++
+	object.executeArgs = append([]byte(nil), args...)
+	return object.outputs, object.executeErr
+}
+
+func (object *fakeBOFObject) Close() error {
+	object.closeCalls++
+	return object.closeErr
+}
+
+func TestExecuteBOFUsesDefaultEntryPointLookup(t *testing.T) {
+	for _, entryPoint := range []string{"", "go", "_go", "coffee", "_coffee"} {
+		t.Run(entryPoint, func(t *testing.T) {
+			object := &fakeBOFObject{}
+			var gotOptions bof.LoadOptions
+			_, err := executeBOFWithLoader([]byte("object"), entryPoint, nil, func(_ []byte, options bof.LoadOptions) (bofObject, error) {
+				gotOptions = options
+				return object, nil
+			})
+			if err != nil {
+				t.Fatalf("executeBOF() error = %v", err)
+			}
+			if gotOptions.EntryPoint != "" {
+				t.Fatalf("entry point option = %q, want default lookup", gotOptions.EntryPoint)
+			}
+			if object.closeCalls != 1 {
+				t.Fatalf("Close() calls = %d, want 1", object.closeCalls)
+			}
+		})
+	}
+}
+
+func TestExecuteBOFUsesExactCustomEntryPointAndPreservesTypedOutput(t *testing.T) {
+	wantArgs := []byte{4, 0, 0, 0, 1, 2, 3, 4}
+	wantOutputs := []bof.Output{
+		{Type: bof.OutputDefault, Data: []byte("first")},
+		{Type: bof.OutputError, Data: []byte("second")},
+	}
+	object := &fakeBOFObject{outputs: wantOutputs}
+	var gotOptions bof.LoadOptions
+	output, err := executeBOFWithLoader([]byte("object"), " CustomExport ", wantArgs, func(_ []byte, options bof.LoadOptions) (bofObject, error) {
+		gotOptions = options
+		return object, nil
+	})
+	if err != nil {
+		t.Fatalf("executeBOF() error = %v", err)
+	}
+	if gotOptions.EntryPoint != " CustomExport " {
+		t.Fatalf("entry point option = %q, want exact custom symbol", gotOptions.EntryPoint)
+	}
+	if !bytes.Equal(object.executeArgs, wantArgs) {
+		t.Fatalf("Execute() args = %v, want %v", object.executeArgs, wantArgs)
+	}
+	if len(output) != len(wantOutputs) {
+		t.Fatalf("output records = %d, want %d", len(output), len(wantOutputs))
+	}
+	for index := range wantOutputs {
+		if output[index].Type != wantOutputs[index].Type || !bytes.Equal(output[index].Data, wantOutputs[index].Data) {
+			t.Fatalf("output[%d] = %#v, want %#v", index, output[index], wantOutputs[index])
+		}
+	}
+	if object.executeCalls != 1 || object.closeCalls != 1 {
+		t.Fatalf("Execute() calls = %d, Close() calls = %d, want 1 each", object.executeCalls, object.closeCalls)
+	}
+}
+
+func TestExecuteBOFReportsExecuteAndCloseErrors(t *testing.T) {
+	object := &fakeBOFObject{
+		outputs: []bof.Output{
+			{Data: []byte("partial")},
+		},
+		executeErr: errors.New("execute failed"),
+		closeErr:   errors.New("close failed"),
+	}
+	output, err := executeBOFWithLoader([]byte("object"), "go", nil, func([]byte, bof.LoadOptions) (bofObject, error) {
+		return object, nil
+	})
+	if len(output) != 1 || !bytes.Equal(output[0].Data, []byte("partial")) {
+		t.Fatalf("output = %#v, want partial output record", output)
+	}
+	if err == nil || !strings.Contains(err.Error(), "execute failed") || !strings.Contains(err.Error(), "close failed") {
+		t.Fatalf("error = %v, want execute and close failures", err)
+	}
+	if object.closeCalls != 1 {
+		t.Fatalf("Close() calls = %d, want 1", object.closeCalls)
+	}
+}
+
+func TestExecuteBOFReportsLoadErrorWithoutClosing(t *testing.T) {
+	wantErr := errors.New("load failed")
+	_, err := executeBOFWithLoader([]byte("object"), "go", nil, func([]byte, bof.LoadOptions) (bofObject, error) {
+		return nil, wantErr
+	})
+	if !errors.Is(err, wantErr) {
+		t.Fatalf("error = %v, want wrapped load error", err)
+	}
+}

implant/sliver/handlers/handlers_darwin.go

@@ -53,6 +53,8 @@ var (
 		pb.MsgUnsetEnvReq:        unsetEnvHandler,
 		pb.MsgChtimesReq:         chtimesHandler,
 		pb.MsgGrepReq:            grepHandler,
+		pb.MsgChmodReq:           chmodHandler,
+		pb.MsgChownReq:           chownHandler,
 
 		pb.MsgScreenshotReq: screenshotHandler,
 		pb.MsgNetstatReq:    netstatHandler,
@@ -92,69 +94,8 @@ func GetSystemHandlers() map[uint32]RPCHandler {
 
 // Extensions
 
-func registerExtensionHandler(data []byte, resp RPCResponse) {
-	registerReq := &pb.RegisterExtensionReq{}
-
-	err := proto.Unmarshal(data, registerReq)
-	if err != nil {
-		return
-	}
-
-	ext := extension.NewDarwinExtension(registerReq.Data, registerReq.Name, registerReq.OS, registerReq.Init)
-	extension.Add(ext)
-	err = ext.Load()
-	registerResp := &pb.RegisterExtension{
-		Response: &commonpb.Response{},
-	}
-	if err != nil {
-		registerResp.Response.Err = err.Error()
-	}
-	data, err = proto.Marshal(registerResp)
-	resp(data, err)
-}
-
-func callExtensionHandler(data []byte, resp RPCResponse) {
-	callReq := &pb.CallExtensionReq{}
-
-	err := proto.Unmarshal(data, callReq)
-	if err != nil {
-		return
-	}
-
-	callResp := &pb.CallExtension{
-		Response: &commonpb.Response{},
-	}
-	gotOutput := false
-	err = extension.Run(callReq.Name, callReq.Export, callReq.Args, func(out []byte) {
-		gotOutput = true
-		callResp.Output = out
-		data, err = proto.Marshal(callResp)
-		resp(data, err)
-	})
-	// Only send back synchronously if there was an error
-	if err != nil || !gotOutput {
-		if err != nil {
-			callResp.Response.Err = err.Error()
-		}
-		data, err = proto.Marshal(callResp)
-		resp(data, err)
-	}
-}
-
-func listExtensionsHandler(data []byte, resp RPCResponse) {
-	lstReq := &pb.ListExtensionsReq{}
-	err := proto.Unmarshal(data, lstReq)
-	if err != nil {
-		return
-	}
-
-	exts := extension.List()
-	lstResp := &pb.ListExtensions{
-		Response: &commonpb.Response{},
-		Names:    exts,
-	}
-	data, err = proto.Marshal(lstResp)
-	resp(data, err)
+func newExtension(data []byte, id string, arch string, init string) extension.Extension {
+	return extension.NewDarwinExtension(data, id, arch, init)
 }
 
 func mountHandler(data []byte, resp RPCResponse) {

implant/sliver/handlers/handlers_extensions.go

@@ -0,0 +1,116 @@
+//go:build linux || darwin || windows
+
+package handlers
+
+/*
+	Sliver Implant Framework
+	Copyright (C) 2021  Bishop Fox
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import (
+	"github.com/bishopfox/sliver/implant/sliver/extension"
+	"github.com/bishopfox/sliver/protobuf/commonpb"
+	"github.com/bishopfox/sliver/protobuf/sliverpb"
+	"google.golang.org/protobuf/proto"
+)
+
+type extensionFactory func(data []byte, id string, arch string, init string) extension.Extension
+
+func registerExtensionHandler(data []byte, resp RPCResponse) {
+	registerExtension(data, resp, newExtension)
+}
+
+func registerExtension(data []byte, resp RPCResponse, factory extensionFactory) {
+	registerReq := &sliverpb.RegisterExtensionReq{}
+	if err := proto.Unmarshal(data, registerReq); err != nil {
+		return
+	}
+
+	ext := factory(registerReq.Data, registerReq.Name, registerReq.OS, registerReq.Init)
+	err := extension.Register(ext)
+	registerResp := &sliverpb.RegisterExtension{Response: &commonpb.Response{}}
+	if err != nil {
+		registerResp.Response.Err = err.Error()
+	}
+	data, err = proto.Marshal(registerResp)
+	resp(data, err)
+}
+
+func callExtensionHandler(data []byte, resp RPCResponse) {
+	callExtension(data, resp, executeBOF)
+}
+
+func callExtension(data []byte, resp RPCResponse, execute bofExecuteFunc) {
+	callReq := &sliverpb.CallExtensionReq{}
+	if err := proto.Unmarshal(data, callReq); err != nil {
+		return
+	}
+
+	callResp := &sliverpb.CallExtension{Response: &commonpb.Response{}}
+	if callReq.IsBOF {
+		outputs, err := execute(callReq.BOFData, callReq.Export, callReq.Args)
+		for _, output := range outputs {
+			if callReq.WantBOFOutputs {
+				callResp.BOFOutputs = append(callResp.BOFOutputs, &sliverpb.BOFOutput{
+					Type: int32(output.Type),
+					Data: append([]byte(nil), output.Data...),
+				})
+			} else {
+				callResp.Output = append(callResp.Output, output.Data...)
+			}
+		}
+		if err != nil {
+			callResp.Response.Err = err.Error()
+		}
+		data, err = proto.Marshal(callResp)
+		resp(data, err)
+		return
+	}
+
+	gotOutput := false
+	var output []byte
+	err := extension.Run(callReq.Name, callReq.Export, callReq.Args, func(out []byte) {
+		// Native callbacks run on the extension's call stack. Keep the first
+		// result, copy it before the native buffer expires, and respond only
+		// after the extension call has returned.
+		if gotOutput {
+			return
+		}
+		gotOutput = true
+		output = append([]byte(nil), out...)
+	})
+	if gotOutput {
+		callResp.Output = output
+	} else if err != nil {
+		callResp.Response.Err = err.Error()
+	}
+	data, err = proto.Marshal(callResp)
+	resp(data, err)
+}
+
+func listExtensionsHandler(data []byte, resp RPCResponse) {
+	lstReq := &sliverpb.ListExtensionsReq{}
+	if err := proto.Unmarshal(data, lstReq); err != nil {
+		return
+	}
+
+	lstResp := &sliverpb.ListExtensions{
+		Response: &commonpb.Response{},
+		Names:    extension.List(),
+	}
+	data, err := proto.Marshal(lstResp)
+	resp(data, err)
+}

implant/sliver/handlers/handlers_extensions_test.go

@@ -0,0 +1,433 @@
+//go:build linux || darwin || windows
+
+package handlers
+
+import (
+	"bytes"
+	"errors"
+	"math"
+	"slices"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/bishopfox/sliver/implant/sliver/extension"
+	"github.com/bishopfox/sliver/protobuf/commonpb"
+	"github.com/bishopfox/sliver/protobuf/sliverpb"
+	"github.com/sliverarmory/reflektor/bof"
+	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type failingExtension struct {
+	id      string
+	loadErr error
+}
+
+type callbackLifetimeExtension struct {
+	id               string
+	output           []byte
+	nativeOutput     []byte
+	callActive       atomic.Bool
+	callbackReturned chan struct{}
+	allowCallReturn  chan struct{}
+	allowReturnOnce  sync.Once
+}
+
+func (f *failingExtension) Load() error {
+	return f.loadErr
+}
+
+func (f *failingExtension) Call(string, []byte, func([]byte)) error {
+	return nil
+}
+
+func (f *failingExtension) GetID() string {
+	return f.id
+}
+
+func (f *failingExtension) GetArch() string {
+	return "test"
+}
+
+func (e *callbackLifetimeExtension) Load() error {
+	return nil
+}
+
+func (e *callbackLifetimeExtension) Call(_ string, _ []byte, callback func([]byte)) error {
+	e.callActive.Store(true)
+	defer e.callActive.Store(false)
+
+	e.nativeOutput = append([]byte(nil), e.output...)
+	callback(e.nativeOutput)
+	for index := range e.nativeOutput {
+		e.nativeOutput[index] = 0xa5
+	}
+	close(e.callbackReturned)
+	<-e.allowCallReturn
+	return nil
+}
+
+func (e *callbackLifetimeExtension) GetID() string {
+	return e.id
+}
+
+func (e *callbackLifetimeExtension) GetArch() string {
+	return "test"
+}
+
+func (e *callbackLifetimeExtension) allowReturn() {
+	e.allowReturnOnce.Do(func() {
+		close(e.allowCallReturn)
+	})
+}
+
+func TestRegisterExtensionDoesNotAddFailedLoad(t *testing.T) {
+	const extensionID = "handler-test-failed-load"
+	wantErr := errors.New("load failed")
+	request, err := proto.Marshal(&sliverpb.RegisterExtensionReq{Name: extensionID})
+	if err != nil {
+		t.Fatalf("marshal request: %v", err)
+	}
+
+	var (
+		responseData []byte
+		responseErr  error
+		responses    int
+	)
+	registerExtension(request, func(data []byte, err error) {
+		responses++
+		responseData = data
+		responseErr = err
+	}, func(_ []byte, id string, _, _ string) extension.Extension {
+		return &failingExtension{id: id, loadErr: wantErr}
+	})
+
+	if responseErr != nil {
+		t.Fatalf("response callback returned error: %v", responseErr)
+	}
+	if responses != 1 {
+		t.Fatalf("got %d responses, want 1", responses)
+	}
+	response := &sliverpb.RegisterExtension{}
+	if err := proto.Unmarshal(responseData, response); err != nil {
+		t.Fatalf("unmarshal response: %v", err)
+	}
+	if response.GetResponse().GetErr() != wantErr.Error() {
+		t.Fatalf("got response error %q, want %q", response.GetResponse().GetErr(), wantErr)
+	}
+	if slices.Contains(extension.List(), extensionID) {
+		t.Fatalf("extension %q was registered after its load failed", extensionID)
+	}
+}
+
+func TestCallExtensionBOFOutputsProtobufRoundTrip(t *testing.T) {
+	assertCallExtensionRequestRoundTrip(t)
+	assertCallExtensionResponseDescriptor(t)
+	assertCallExtensionResponseRoundTrip(t)
+}
+
+func assertCallExtensionRequestRoundTrip(t *testing.T) {
+	t.Helper()
+	requestDescriptor := (&sliverpb.CallExtensionReq{}).ProtoReflect().Descriptor()
+	wantOutputField := requestDescriptor.Fields().ByName("WantBOFOutputs")
+	if wantOutputField == nil || wantOutputField.Number() != 7 {
+		t.Fatalf("WantBOFOutputs field = %v, want field number 7", wantOutputField)
+	}
+	wantRequest := &sliverpb.CallExtensionReq{IsBOF: true, WantBOFOutputs: true}
+	encodedRequest, err := proto.Marshal(wantRequest)
+	if err != nil {
+		t.Fatalf("marshal CallExtensionReq: %v", err)
+	}
+	gotRequest := &sliverpb.CallExtensionReq{}
+	if err := proto.Unmarshal(encodedRequest, gotRequest); err != nil {
+		t.Fatalf("unmarshal CallExtensionReq: %v", err)
+	}
+	if !gotRequest.GetIsBOF() || !gotRequest.GetWantBOFOutputs() {
+		t.Fatalf("request round trip = {IsBOF:%t WantBOFOutputs:%t}, want both true", gotRequest.GetIsBOF(), gotRequest.GetWantBOFOutputs())
+	}
+}
+
+func assertCallExtensionResponseDescriptor(t *testing.T) {
+	t.Helper()
+	descriptor := (&sliverpb.CallExtension{}).ProtoReflect().Descriptor()
+	for _, field := range []struct {
+		name   protoreflect.Name
+		number protoreflect.FieldNumber
+	}{
+		{name: "Output", number: 1},
+		{name: "ServerStore", number: 2},
+		{name: "BOFOutputs", number: 3},
+		{name: "Response", number: 9},
+	} {
+		got := descriptor.Fields().ByName(field.name)
+		if got == nil || got.Number() != field.number {
+			t.Fatalf("field %q number = %v, want %d", field.name, got, field.number)
+		}
+	}
+	if got := descriptor.Fields().ByName("BOFOutputs").Cardinality(); got != protoreflect.Repeated {
+		t.Fatalf("BOFOutputs cardinality = %v, want repeated", got)
+	}
+}
+
+func assertCallExtensionResponseRoundTrip(t *testing.T) {
+	t.Helper()
+	wantResponse := &sliverpb.CallExtension{
+		Output: []byte{'a', 0x00, 0xff, 'b'},
+		BOFOutputs: []*sliverpb.BOFOutput{
+			{Type: 0, Data: []byte("default")},
+			{Type: 0x0d, Data: []byte("error")},
+			{Type: math.MinInt32, Data: []byte{0x00, 0xff}},
+		},
+	}
+	encodedResponse, err := proto.Marshal(wantResponse)
+	if err != nil {
+		t.Fatalf("marshal CallExtension: %v", err)
+	}
+	gotResponse := &sliverpb.CallExtension{}
+	if err := proto.Unmarshal(encodedResponse, gotResponse); err != nil {
+		t.Fatalf("unmarshal CallExtension: %v", err)
+	}
+	if !bytes.Equal(gotResponse.GetOutput(), wantResponse.GetOutput()) {
+		t.Fatalf("legacy Output = %v, want %v", gotResponse.GetOutput(), wantResponse.GetOutput())
+	}
+	if len(gotResponse.GetBOFOutputs()) != len(wantResponse.GetBOFOutputs()) {
+		t.Fatalf("BOFOutputs records = %d, want %d", len(gotResponse.GetBOFOutputs()), len(wantResponse.GetBOFOutputs()))
+	}
+	for index, wantRecord := range wantResponse.GetBOFOutputs() {
+		gotRecord := gotResponse.GetBOFOutputs()[index]
+		if gotRecord.GetType() != wantRecord.GetType() || !bytes.Equal(gotRecord.GetData(), wantRecord.GetData()) {
+			t.Fatalf("BOFOutputs[%d] = {Type:%d Data:%v}, want {Type:%d Data:%v}", index, gotRecord.GetType(), gotRecord.GetData(), wantRecord.GetType(), wantRecord.GetData())
+		}
+	}
+}
+
+func TestCallExtensionLegacyWireEncodingIsUnchanged(t *testing.T) {
+	message := &sliverpb.CallExtension{
+		Output:      []byte{'a', 0x00, 0xff, 'b'},
+		ServerStore: true,
+		Response:    &commonpb.Response{},
+	}
+	got, err := (proto.MarshalOptions{Deterministic: true}).Marshal(message)
+	if err != nil {
+		t.Fatalf("marshal legacy CallExtension fields: %v", err)
+	}
+	want := []byte{0x0a, 0x04, 'a', 0x00, 0xff, 'b', 0x10, 0x01, 0x4a, 0x00}
+	if !bytes.Equal(got, want) {
+		t.Fatalf("legacy wire bytes = %x, want pre-change encoding %x", got, want)
+	}
+}
+
+func TestCallExtensionHandlerDefersResponseAndCopiesCallbackOutput(t *testing.T) {
+	const extensionID = "handler-test-callback-lifetime"
+	wantOutput := []byte("native extension output")
+	ext := &callbackLifetimeExtension{
+		id:               extensionID,
+		output:           wantOutput,
+		callbackReturned: make(chan struct{}),
+		allowCallReturn:  make(chan struct{}),
+	}
+	extension.Add(ext)
+	defer ext.allowReturn()
+
+	request, err := proto.Marshal(&sliverpb.CallExtensionReq{Name: extensionID, Export: "Run"})
+	if err != nil {
+		t.Fatalf("marshal request: %v", err)
+	}
+
+	type handlerResponse struct {
+		data       []byte
+		err        error
+		callActive bool
+	}
+	responses := make(chan handlerResponse, 2)
+	handlerDone := make(chan struct{})
+	go func() {
+		defer close(handlerDone)
+		callExtensionHandler(request, func(data []byte, err error) {
+			responses <- handlerResponse{
+				data:       append([]byte(nil), data...),
+				err:        err,
+				callActive: ext.callActive.Load(),
+			}
+		})
+	}()
+
+	select {
+	case <-ext.callbackReturned:
+	case <-time.After(5 * time.Second):
+		t.Fatal("extension callback did not return")
+	}
+	select {
+	case <-responses:
+		t.Fatal("RPC response was delivered before Extension.Call returned")
+	default:
+	}
+
+	ext.allowReturn()
+	var response handlerResponse
+	select {
+	case response = <-responses:
+	case <-time.After(5 * time.Second):
+		t.Fatal("callExtensionHandler did not deliver a response")
+	}
+	if response.callActive {
+		t.Fatal("RPC response was delivered while Extension.Call was active")
+	}
+	if response.err != nil {
+		t.Fatalf("response callback returned error: %v", response.err)
+	}
+
+	callResponse := &sliverpb.CallExtension{}
+	if err := proto.Unmarshal(response.data, callResponse); err != nil {
+		t.Fatalf("unmarshal response: %v", err)
+	}
+	if !bytes.Equal(callResponse.Output, wantOutput) {
+		t.Fatalf("response output = %q, want %q", callResponse.Output, wantOutput)
+	}
+	if len(callResponse.GetBOFOutputs()) != 0 {
+		t.Fatalf("native extension response has %d BOF output records, want none", len(callResponse.GetBOFOutputs()))
+	}
+	if bytes.Equal(ext.nativeOutput, wantOutput) {
+		t.Fatal("fake native output was not poisoned after the callback")
+	}
+
+	select {
+	case <-handlerDone:
+	case <-time.After(5 * time.Second):
+		t.Fatal("callExtensionHandler did not return")
+	}
+	select {
+	case <-responses:
+		t.Fatal("callExtensionHandler delivered more than one response")
+	default:
+	}
+}
+
+func TestCallExtensionPreservesPartialBOFOutputOnError(t *testing.T) {
+	for _, test := range []struct {
+		name      string
+		wantTyped bool
+	}{
+		{name: "legacy", wantTyped: false},
+		{name: "typed", wantTyped: true},
+	} {
+		t.Run(test.name, func(t *testing.T) { runPartialBOFOutputTest(t, test.wantTyped) })
+	}
+}
+
+func runPartialBOFOutputTest(t *testing.T, wantTyped bool) {
+	t.Helper()
+	wantData := []byte("bof object")
+	wantArgs := []byte{4, 0, 0, 0, 1, 2, 3, 4}
+	wantOutputs := []bof.Output{
+		{Type: bof.OutputDefault, Data: []byte("partial ")},
+		{Type: bof.OutputError, Data: []byte("BOF output")},
+		{Type: -2147483648, Data: []byte{0x00, 0xff}},
+	}
+	wantErr := errors.New("BOF execution failed")
+	request, err := proto.Marshal(&sliverpb.CallExtensionReq{
+		Name:           "must-not-use-native-registry",
+		Export:         "CustomExport",
+		Args:           wantArgs,
+		BOFData:        wantData,
+		IsBOF:          true,
+		WantBOFOutputs: wantTyped,
+	})
+	if err != nil {
+		t.Fatalf("marshal request: %v", err)
+	}
+
+	var (
+		responseData []byte
+		responseErr  error
+		responses    int
+	)
+	callExtension(request, func(data []byte, err error) {
+		responses++
+		responseData = data
+		responseErr = err
+	}, func(data []byte, entryPoint string, args []byte) ([]bof.Output, error) {
+		assertPartialBOFInvocation(t, data, entryPoint, args, wantData, wantArgs)
+		return wantOutputs, wantErr
+	})
+
+	response := decodePartialBOFResponse(t, responseData, responseErr, responses, wantErr)
+	if wantTyped {
+		assertTypedPartialBOFResponse(t, response, wantOutputs)
+		return
+	}
+	assertLegacyPartialBOFResponse(t, response)
+}
+
+func assertPartialBOFInvocation(t *testing.T, data []byte, entryPoint string, args, wantData, wantArgs []byte) {
+	t.Helper()
+	if !bytes.Equal(data, wantData) {
+		t.Fatalf("BOF data = %q, want %q", data, wantData)
+	}
+	if entryPoint != "CustomExport" {
+		t.Fatalf("entry point = %q, want CustomExport", entryPoint)
+	}
+	if !bytes.Equal(args, wantArgs) {
+		t.Fatalf("args = %v, want %v", args, wantArgs)
+	}
+}
+
+func decodePartialBOFResponse(t *testing.T, responseData []byte, responseErr error, responses int, wantErr error) *sliverpb.CallExtension {
+	t.Helper()
+	if responseErr != nil {
+		t.Fatalf("response callback returned error: %v", responseErr)
+	}
+	if responses != 1 {
+		t.Fatalf("got %d responses, want 1", responses)
+	}
+	response := &sliverpb.CallExtension{}
+	if err := proto.Unmarshal(responseData, response); err != nil {
+		t.Fatalf("unmarshal response: %v", err)
+	}
+	if response.GetResponse().GetErr() != wantErr.Error() {
+		t.Fatalf("response error = %q, want %q", response.GetResponse().GetErr(), wantErr)
+	}
+	return response
+}
+
+func assertLegacyPartialBOFResponse(t *testing.T, response *sliverpb.CallExtension) {
+	t.Helper()
+	wantOutput := []byte{'p', 'a', 'r', 't', 'i', 'a', 'l', ' ', 'B', 'O', 'F', ' ', 'o', 'u', 't', 'p', 'u', 't', 0x00, 0xff}
+	if !bytes.Equal(response.GetOutput(), wantOutput) {
+		t.Fatalf("legacy output = %v, want %v", response.GetOutput(), wantOutput)
+	}
+	if len(response.GetBOFOutputs()) != 0 {
+		t.Fatalf("typed output records = %d, want none", len(response.GetBOFOutputs()))
+	}
+}
+
+func assertTypedPartialBOFResponse(t *testing.T, response *sliverpb.CallExtension, wantOutputs []bof.Output) {
+	t.Helper()
+	if len(response.GetOutput()) != 0 {
+		t.Fatalf("legacy output = %v, want none", response.GetOutput())
+	}
+	if len(response.GetBOFOutputs()) != len(wantOutputs) {
+		t.Fatalf("typed output records = %d, want %d", len(response.GetBOFOutputs()), len(wantOutputs))
+	}
+	for index, want := range wantOutputs {
+		got := response.GetBOFOutputs()[index]
+		if got.GetType() != int32(want.Type) || !bytes.Equal(got.GetData(), want.Data) {
+			t.Fatalf("typed output[%d] = {Type:%d Data:%v}, want {Type:%d Data:%v}", index, got.GetType(), got.GetData(), want.Type, want.Data)
+		}
+	}
+}
+
+func TestSystemHandlersIncludeExtensions(t *testing.T) {
+	handlers := GetSystemHandlers()
+	for _, messageType := range []uint32{
+		sliverpb.MsgRegisterExtensionReq,
+		sliverpb.MsgCallExtensionReq,
+		sliverpb.MsgListExtensionsReq,
+	} {
+		if handlers[messageType] == nil {
+			t.Errorf("handler for message type %d is not registered", messageType)
+		}
+	}
+}

implant/sliver/handlers/handlers_filesystem_test.go

@@ -0,0 +1,77 @@
+package handlers
+
+import (
+	"archive/tar"
+	"bytes"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/bishopfox/sliver/protobuf/sliverpb"
+	"google.golang.org/protobuf/proto"
+)
+
+func TestCdHandlerReportsChdirFailure(t *testing.T) {
+	workingDirectory := t.TempDir()
+	t.Chdir(workingDirectory)
+
+	request, err := proto.Marshal(&sliverpb.CdReq{Path: filepath.Join(workingDirectory, "missing")})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	called := false
+	cdHandler(request, func(data []byte, handlerErr error) {
+		called = true
+		if handlerErr != nil {
+			t.Fatalf("cdHandler callback error: %v", handlerErr)
+		}
+		response := &sliverpb.Pwd{}
+		if err := proto.Unmarshal(data, response); err != nil {
+			t.Fatalf("decode cd response: %v", err)
+		}
+		if response.GetResponse().GetErr() == "" {
+			t.Fatal("cdHandler returned success for a missing directory")
+		}
+		if response.Path != workingDirectory {
+			t.Fatalf("working directory changed: got %q, want %q", response.Path, workingDirectory)
+		}
+	})
+	if !called {
+		t.Fatal("cdHandler did not invoke its response callback")
+	}
+}
+
+func TestExtractFilesTruncatesOverwrittenFile(t *testing.T) {
+	destination := t.TempDir()
+	archive := func(content string) []byte {
+		t.Helper()
+		buffer := bytes.NewBuffer(nil)
+		writer := tar.NewWriter(buffer)
+		header := &tar.Header{Name: "bundle/item.txt", Mode: 0o600, Size: int64(len(content)), Typeflag: tar.TypeReg}
+		if err := writer.WriteHeader(header); err != nil {
+			t.Fatal(err)
+		}
+		if _, err := writer.Write([]byte(content)); err != nil {
+			t.Fatal(err)
+		}
+		if err := writer.Close(); err != nil {
+			t.Fatal(err)
+		}
+		return buffer.Bytes()
+	}
+
+	if written, skipped, err := extractFiles(archive("a deliberately long first payload\n"), destination, false); err != nil || written != 1 || skipped != 0 {
+		t.Fatalf("initial extract: written=%d skipped=%d err=%v", written, skipped, err)
+	}
+	if written, skipped, err := extractFiles(archive("short\n"), destination, true); err != nil || written != 1 || skipped != 0 {
+		t.Fatalf("overwrite extract: written=%d skipped=%d err=%v", written, skipped, err)
+	}
+	content, err := os.ReadFile(filepath.Join(destination, "bundle", "item.txt"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(content) != "short\n" {
+		t.Fatalf("overwritten content = %q, want exact shorter payload", content)
+	}
+}