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x86.nz assembler: add jmp/call abs/rel (rip) memrefs

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Add some more notes in INSTALL text
Initial design work on dalvik payload instructions
Open '-' virtual file as read-write (r2 -)
Fix r_core_yank_to signature
Remove io.va search warning (no more issues?)
This commit is contained in:
pancake 2012-08-09 12:42:44 +02:00
parent a0d18c8f38
commit 85534da1e9
10 changed files with 174 additions and 97 deletions
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16
INSTALL
View File

@ -9,11 +9,23 @@ Then build:
$ make -s
NOTE: You can override CC, CFLAGS, CPPFLAGS with environment.
Those variables are captured by make, not by configure.
And install
$ sup make install
$ sudo make install
If you regret about it, just 'make deinstall' :)
If you are developing: install it with symlinks to avoid installing
after every compilation.
$ sudo make symstall
Deinstall:
$ make deinstall
NOTE: Make purge will remove *all* installed versions of r2.
WINDOWS
=======

2
binr/radare2/radare2.c
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@ -1,4 +1,4 @@
/* radare - LGPL - Copyright 2009-2012 pancake<nopcode.org> */
/* radare - LGPL - Copyright 2009-2012 - pancake */
#define USE_THREADS 1

2
libr/asm/arch/dalvik/opcode.h
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@ -81,7 +81,7 @@ static const struct dalvik_opcodes_t dalvik_opcodes[256] = {
{"new-array", 4, fmtopvAvBtCCCC},
{"filled-new-array", 6, fmtopvXtBBBB},
{"filled-new-array/range", 6, fmtopvCCCCmBBBB},
{"fill-array-data", 6, fmtopvAApBBBBBBBB},
{"fill-array-data-payload", 7, fmtopvAApBBBBBBBB},
{"throw", 2, fmtopvAA},
{"goto", 2, fmtoppAA},
{"goto/16", 4, fmtoppAAAA},

15
libr/asm/p/asm_dalvik.c
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@ -1,4 +1,4 @@
/* radare - LGPL - Copyright 2009-2011 */
/* radare - LGPL - Copyright 2009-2012 - earada, pancake */
#include <stdio.h>
#include <string.h>
@ -11,12 +11,18 @@
static int dalvik_disassemble (RAsm *a, RAsmOp *op, const ut8 *buf, ut64 len) {
int i = (int) buf[0];
int size = 0;
int vA, vB, vC;
char str[1024];
ut64 offset;
int size = dalvik_opcodes[i].len;
int payload = size & 1;
size -= payload;
if (payload) {
payload = 0; // XXX: calculate proper size of payload
//size += payload;
}
if (dalvik_opcodes[i].len <= len) {
if (size <= len) {
strcpy (op->buf_asm, dalvik_opcodes[i].name);
size = dalvik_opcodes[i].len;
switch (dalvik_opcodes[i].fmt) {
@ -328,12 +334,13 @@ static int dalvik_disassemble (RAsm *a, RAsmOp *op, const ut8 *buf, ut64 len) {
strcpy (op->buf_asm, "invalid ");
size = 2;
}
op->inst_len = size;
} else {
strcpy (op->buf_asm, "invalid ");
op->inst_len = len;
size = len;
}
size += payload; // XXX
op->inst_len = size;
return size;
}

2
libr/asm/p/asm_x86.c
View File

@ -1,4 +1,4 @@
/* radare - LGPL - Copyright 2009-2011 nibble<.ds@gmail.com> */
/* radare - LGPL - Copyright 2009-2012 - nibble */
#include <stdio.h>
#include <string.h>

70
libr/asm/p/asm_x86_nz.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2008-2012 - pancake <nopcode.org> */
/* Copyright (C) 2008-2012 - pancake */
#include <stdio.h>
#include <string.h>
@ -16,6 +16,8 @@ TODO
BLA:
Add support for AND, OR, ..
0x100000ec5 1 4883e4f0 and rsp, 0xfffffffffffffff0
64bit:
ff25ea122100 jmp qword [rip+0x2112ea]
#endif
static int jop (ut64 addr, ut8 *data, ut8 a, ut8 b, const char *arg) {
@ -337,6 +339,35 @@ static int assemble(RAsm *a, RAsmOp *ao, const char *str) {
return l;
} else
if (!strcmp (op, "call")) {
if (arg[0] == '[' && arg[strlen (arg)-1] == ']') {
if (!memcmp (arg+1, "rip", 3)) {
ut64 dst = r_num_math (NULL, arg+4);
ut32 addr = dst;
ut8 *ptr = (ut8 *)&addr;
data[l++] = 0xff;
data[l++] = 0x1d;
data[l++] = ptr[0];
data[l++] = ptr[1];
data[l++] = ptr[2];
data[l++] = ptr[3];
return l;
} else {
ut64 dst = r_num_math (NULL, arg+1);
ut32 addr = dst;
ut8 *ptr = (ut8 *)&addr;
int r = getreg (arg+1);
if (dst != 0) {
data[l++] = 0xff;
data[l++] = 0x15;
data[l++] = ptr[0];
data[l++] = ptr[1];
data[l++] = ptr[2];
data[l++] = ptr[3];
return l;
}
return -1;
}
} else {
ut64 dst = r_num_math (NULL, arg);
ut32 addr = dst;
ut8 *ptr = (ut8 *)&addr;
@ -359,6 +390,7 @@ static int assemble(RAsm *a, RAsmOp *ao, const char *str) {
data[l++] = ptr[2];
data[l++] = ptr[3];
return l;
}
} else if (!strcmp (op, "inc")) {
data[l++] = 0x40 | getreg (arg);
return l;
@ -718,6 +750,35 @@ static int assemble(RAsm *a, RAsmOp *ao, const char *str) {
}
return l;
} else if (!strcmp (op, "jmp")) {
if (arg[0] == '[' && arg[strlen (arg)-1] == ']') {
if (!memcmp (arg+1, "rip", 3)) {
ut64 dst = r_num_math (NULL, arg+4);
ut32 addr = dst;
ut8 *ptr = (ut8 *)&addr;
data[l++] = 0xff;
data[l++] = 0x25;
data[l++] = ptr[0];
data[l++] = ptr[1];
data[l++] = ptr[2];
data[l++] = ptr[3];
return l;
} else {
ut64 dst = r_num_math (NULL, arg+1);
ut32 addr = dst;
ut8 *ptr = (ut8 *)&addr;
int r = getreg (arg+1);
if (dst != 0) {
data[l++] = 0xff;
data[l++] = 0x25;
data[l++] = ptr[0];
data[l++] = ptr[1];
data[l++] = ptr[2];
data[l++] = ptr[3];
return l;
}
return -1;
}
} else {
ut64 dst = r_num_get (NULL, arg) - offset;
ut32 addr = dst;
ut8 *ptr = (ut8 *)&addr;
@ -727,13 +788,13 @@ static int assemble(RAsm *a, RAsmOp *ao, const char *str) {
data[l] = getreg (arg) | 0xe0;
if (data[l] != 0xff)
return 2;
l++;
if (arg[0] == '[' && arg[strlen (arg)] == ']') {
if (arg[0] == '[' && arg[strlen (arg)-1] == ']') {
data[l] = getreg (arg+1) | 0x20;
if (data[l] != 0xff)
return l;
return l+1;
l++;
}
return -1;
#if 0
if (!strcmp(arg, "esp")) { data[1]='\x24'; data[2]='\x24'; } else
if (!strcmp(arg, "ebp")) { data[1]='\x24'; data[2]='\x24'; } else
@ -774,6 +835,7 @@ static int assemble(RAsm *a, RAsmOp *ao, const char *str) {
data[l++] = ptr[3];
return l;
}
}
} else
// SPAGUETTI
if (!strcmp (op, "jle")) {

10
libr/core/cmd_search.c
View File

@ -1,4 +1,4 @@
/* radare - LGPL - Copyright 2009-2012 // pancake<nopcode.org> */
/* radare - LGPL - Copyright 2009-2012 - pancake */
static int preludecnt = 0;
static int searchflags = 0;
@ -121,11 +121,6 @@ static int __cb_hit(RSearchKeyword *kw, void *user, ut64 addr) {
char flag[64];
snprintf (flag, sizeof (flag), "%s%d_%d", searchprefix, kw->kwidx, kw->count);
r_flag_set (core->flags, flag, addr, kw->keyword_length, 1);
#if 0
// TODO: use r_flag_set ()
r_core_cmdf (core, "f %s%d_%d %d 0x%08"PFMT64x"\n", searchprefix,
kw->kwidx, kw->count, kw->keyword_length, addr);
#endif
}
if (!strnull (cmdhit)) {
ut64 here = core->offset;
@ -494,8 +489,6 @@ static int cmd_search(void *data, const char *input) {
" e search.flags = true ; if enabled store flags on keyword hits\n");
break;
}
if (core->io->va)
eprintf ("Searching with io.va enabled can be wrong.\n");
searchhits = 0;
r_config_set_i (core->config, "search.kwidx", core->search->n_kws);
if (dosearch) {
@ -566,4 +559,3 @@ static int cmd_search(void *data, const char *input) {
}
return R_TRUE;
}

4
libr/core/file.c
View File

@ -180,8 +180,10 @@ R_API RCoreFile *r_core_file_open(RCore *r, const char *file, int mode, ut64 loa
const char *cp;
char *p;
RIODesc *fd;
if (!strcmp (file, "-"))
if (!strcmp (file, "-")) {
file = "malloc://512";
mode = 4|2;
}
r->io->bits = r->assembler->bits; // TODO: we need an api for this
fd = r_io_open (r->io, file, mode, 0644);
if (fd == NULL) {

12
libr/core/yank.c
View File

@ -1,4 +1,4 @@
/* radare - LGPL - Copyright 2009-2012 pancake<nopcode.org> */
/* radare - LGPL - Copyright 2009-2012 - pancake */
#include "r_core.h"
@ -46,15 +46,15 @@ R_API int r_core_yank_paste(struct r_core_t *core, ut64 addr, int len) {
return R_TRUE;
}
// TODO: arg must be const !!! use strdup here
R_API int r_core_yank_to(RCore *core, char *arg) {
R_API int r_core_yank_to(RCore *core, const char *_arg) {
ut64 src = core->offset;
ut64 len = 0;
ut64 pos = -1;
char *str;
char *str, *arg;
ut8 *buf;
while (*arg==' ') arg++;
while (*_arg==' ') _arg++;
arg = strdup (_arg);
str = strchr (arg, ' ');
if (str) {
str[0]='\0';
@ -64,6 +64,7 @@ R_API int r_core_yank_to(RCore *core, char *arg) {
}
if ((str == NULL) || (pos == -1) || (len == 0)) {
eprintf ("Usage: yt [len] [dst-addr]\n");
free (arg);
return 1;
}
#if 0
@ -79,5 +80,6 @@ R_API int r_core_yank_to(RCore *core, char *arg) {
core->offset = src;
r_core_block_read (core, 0);
free (arg);
return 0;
}

2
libr/include/r_core.h
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@ -174,7 +174,7 @@ R_API int r_core_write_op(RCore *core, const char *arg, char op);
R_API int r_core_yank(RCore *core, ut64 addr, int len);
R_API int r_core_yank_paste(RCore *core, ut64 addr, int len);
R_API void r_core_yank_set (RCore *core, const char *str);
R_API int r_core_yank_to(RCore *core, char *arg);
R_API int r_core_yank_to(RCore *core, const char *arg);
R_API int r_core_loadlibs(RCore *core);
// FIXME: change (void *user) -> (RCore *core)