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cleaning & indentation

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This commit is contained in:
Nguyen Anh Quynh 2015-09-03 18:16:49 +08:00
parent b8d4240240
commit 9f9d57e84f
6 changed files with 633 additions and 694 deletions
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2
qemu/unicorn_common.h
View File

@ -77,7 +77,7 @@ static inline void uc_common_init(struct uc_struct* uc)
uc->readonly_mem = memory_region_set_readonly;
uc->target_page_size = TARGET_PAGE_SIZE;
uc->target_page_align = TARGET_PAGE_SIZE - 1;
uc->target_page_align = TARGET_PAGE_SIZE - 1;
if (!uc->release)
uc->release = release_common;

2
regress/ro_mem_test.c
View File

@ -160,7 +160,7 @@ int main(int argc, char **argv, char **envp)
uint32_t eax = 0x40002C;
uc_reg_write(handle, UC_X86_REG_EAX, &eax);
//resume execution at the mov dword [eax], 0x87654321
//to test an aligned write as well
//to test an aligned write as well
err = uc_emu_start(handle, 0x400015, 0x400000 + sizeof(PROGRAM), 0, 2);
if (err) {
printf("Expected failure on uc_emu_start() with error returned %u: %s\n",

423
samples/mem_exec.c
View File

@ -1,23 +1,22 @@
/*
Executable memory regions demo / unit test
Executable memory regions demo / unit test
Copyright(c) 2015 Chris Eagle
Copyright(c) 2015 Chris Eagle
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
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.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
*/
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
@ -30,47 +29,47 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include <unicorn/unicorn.h>
unsigned char PROGRAM[] =
"\xeb\x45\x5e\x81\xe6\x00\xf0\xff\xff\x40\x40\x40\x40\x40\x40\x40"
"\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40"
"\x40\x40\x40\x40\x40\x40\x40\x89\xf7\x81\xc7\x00\x00\x10\x00\xb9"
"\x4c\x00\x00\x00\x81\xff\x00\x00\x40\x00\x75\x01\xf4\xf3\xa4\x81"
"\xe7\x00\xf0\xff\xff\xff\xe7\xe8\xb6\xff\xff\xff";
// total size: 76 bytes
"\xeb\x45\x5e\x81\xe6\x00\xf0\xff\xff\x40\x40\x40\x40\x40\x40\x40"
"\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40\x40"
"\x40\x40\x40\x40\x40\x40\x40\x89\xf7\x81\xc7\x00\x00\x10\x00\xb9"
"\x4c\x00\x00\x00\x81\xff\x00\x00\x40\x00\x75\x01\xf4\xf3\xa4\x81"
"\xe7\x00\xf0\xff\xff\xff\xe7\xe8\xb6\xff\xff\xff";
// total size: 76 bytes
/*
bits 32
bits 32
; assumes r-x section at 0x100000
; assumes rw- section at 0x200000
; assumes r-- section at 0x300000
; also needs an initialized stack
; assumes r-x section at 0x100000
; assumes rw- section at 0x200000
; assumes r-- section at 0x300000
; also needs an initialized stack
start:
jmp bottom
jmp bottom
top:
pop esi
and esi, ~0xfff
times 30 inc eax
mov edi, esi
add edi, 0x100000
mov ecx, end - start
rep movsb
and edi, ~0xfff
cmp edi, 0x400000
jnz next_block
hlt
pop esi
and esi, ~0xfff
times 30 inc eax
mov edi, esi
add edi, 0x100000
mov ecx, end - start
rep movsb
and edi, ~0xfff
cmp edi, 0x400000
jnz next_block
hlt
next_block:
jmp edi
jmp edi
bottom:
call top
call top
end:
*/
*/
int test_num = 0;
uint32_t tests[] = {
0x41414141,
0x43434343,
0x45454545
0x41414141,
0x43434343,
0x45454545
};
static int log_num = 1;
@ -81,216 +80,200 @@ static int log_num = 1;
// callback for tracing instruction
static void hook_code(uch handle, uint64_t addr, uint32_t size, void *user_data)
{
uint8_t opcode;
if (uc_mem_read(handle, addr, &opcode, 1) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
}
// printf("ok %d - uc_mem_read for opcode at address 0x%" PRIx64 "\n", log_num++, addr);
switch (opcode) {
case 0xf4: //hlt
printf("# Handling HLT\n");
if (uc_emu_stop(handle) != UC_ERR_OK) {
printf("not ok %d - uc_emu_stop fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
_exit(-1);
}
else {
printf("ok %d - hlt encountered, uc_emu_stop called\n", log_num++);
}
break;
default: //all others
// printf("# Handling OTHER\n");
break;
}
uint8_t opcode;
if (uc_mem_read(handle, addr, &opcode, 1) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
}
// printf("ok %d - uc_mem_read for opcode at address 0x%" PRIx64 "\n", log_num++, addr);
switch (opcode) {
case 0xf4: //hlt
printf("# Handling HLT\n");
if (uc_emu_stop(handle) != UC_ERR_OK) {
printf("not ok %d - uc_emu_stop fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
_exit(-1);
} else {
printf("ok %d - hlt encountered, uc_emu_stop called\n", log_num++);
}
break;
default: //all others
// printf("# Handling OTHER\n");
break;
}
}
// callback for tracing memory access (READ or WRITE)
static void hook_mem_write(uch handle, uc_mem_type type,
uint64_t addr, int size, int64_t value, void *user_data)
{
printf("# write to memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
printf("# write to memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
}
// callback for tracing invalid memory access (READ or WRITE)
static bool hook_mem_invalid(uch handle, uc_mem_type type,
uint64_t addr, int size, int64_t value, void *user_data)
{
switch(type) {
default:
printf("not ok %d - UC_HOOK_MEM_INVALID type: %d at 0x%" PRIx64 "\n", log_num++, type, addr);
return false;
case UC_MEM_EXEC_PROT:
printf("# Fetch from non-executable memory at 0x%"PRIx64 "\n", addr);
switch(type) {
default:
printf("not ok %d - UC_HOOK_MEM_INVALID type: %d at 0x%" PRIx64 "\n", log_num++, type, addr);
return false;
case UC_MEM_EXEC_PROT:
printf("# Fetch from non-executable memory at 0x%"PRIx64 "\n", addr);
//make page executable
if (uc_mem_protect(handle, addr & ~0xfffL, 0x1000, UC_PROT_READ | UC_PROT_EXEC) != UC_ERR_OK) {
printf("not ok %d - uc_mem_protect fail for address: 0x%" PRIx64 "\n", log_num++, addr);
}
else {
printf("ok %d - uc_mem_protect success at 0x%" PRIx64 "\n", log_num++, addr);
}
return true;
case UC_MEM_WRITE_PROT:
printf("# write to non-writeable memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
//make page executable
if (uc_mem_protect(handle, addr & ~0xfffL, 0x1000, UC_PROT_READ | UC_PROT_EXEC) != UC_ERR_OK) {
printf("not ok %d - uc_mem_protect fail for address: 0x%" PRIx64 "\n", log_num++, addr);
} else {
printf("ok %d - uc_mem_protect success at 0x%" PRIx64 "\n", log_num++, addr);
}
return true;
case UC_MEM_WRITE_PROT:
printf("# write to non-writeable memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
if (uc_mem_protect(handle, addr & ~0xfffL, 0x1000, UC_PROT_READ | UC_PROT_WRITE) != UC_ERR_OK) {
printf("not ok %d - uc_mem_protect fail during hook_mem_invalid callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
}
else {
printf("ok %d - uc_mem_protect success\n", log_num++);
}
return true;
}
if (uc_mem_protect(handle, addr & ~0xfffL, 0x1000, UC_PROT_READ | UC_PROT_WRITE) != UC_ERR_OK) {
printf("not ok %d - uc_mem_protect fail during hook_mem_invalid callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
} else {
printf("ok %d - uc_mem_protect success\n", log_num++);
}
return true;
}
}
int main(int argc, char **argv, char **envp)
{
uch handle, trace1, trace2;
uc_err err;
uint32_t esp, eip;
int32_t buf1[1024], buf2[1024], readbuf[1024];
int i;
//don't really care about quality of randomness
srand(time(NULL));
for (i = 0; i < 1024; i++) {
buf1[i] = rand();
buf2[i] = rand();
}
uch handle, trace1, trace2;
uc_err err;
uint32_t esp, eip;
int32_t buf1[1024], buf2[1024], readbuf[1024];
int i;
printf("# Memory protect test\n");
//don't really care about quality of randomness
srand(time(NULL));
for (i = 0; i < 1024; i++) {
buf1[i] = rand();
buf2[i] = rand();
}
// Initialize emulator in X86-32bit mode
err = uc_open(UC_ARCH_X86, UC_MODE_32, &handle);
if (err) {
printf("not ok %d - Failed on uc_open() with error returned: %u\n", log_num++, err);
return 1;
}
else {
printf("ok %d - uc_open() success\n", log_num++);
}
printf("# Memory protect test\n");
uc_mem_map(handle, 0x100000, 0x1000, UC_PROT_READ | UC_PROT_EXEC);
uc_mem_map(handle, 0x1ff000, 0x2000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x300000, 0x2000, UC_PROT_READ);
uc_mem_map(handle, 0xf00000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
// Initialize emulator in X86-32bit mode
err = uc_open(UC_ARCH_X86, UC_MODE_32, &handle);
if (err) {
printf("not ok %d - Failed on uc_open() with error returned: %u\n", log_num++, err);
return 1;
} else {
printf("ok %d - uc_open() success\n", log_num++);
}
esp = 0xf00000 + 0x1000;
uc_mem_map(handle, 0x100000, 0x1000, UC_PROT_READ | UC_PROT_EXEC);
uc_mem_map(handle, 0x1ff000, 0x2000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x300000, 0x2000, UC_PROT_READ);
uc_mem_map(handle, 0xf00000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
// Setup stack pointer
if (uc_reg_write(handle, UC_X86_REG_ESP, &esp)) {
printf("not ok %d - Failed to set esp. quit!\n", log_num++);
return 2;
}
else {
printf("ok %d - ESP set\n", log_num++);
}
esp = 0xf00000 + 0x1000;
// fill in sections that shouldn't get touched
if (uc_mem_write(handle, 0x1ff000, (uint8_t*)buf1, 4096)) {
printf("not ok %d - Failed to write random buffer 1 to memory, quit!\n", log_num++);
return 3;
}
else {
printf("ok %d - Random buffer 1 written to memory\n", log_num++);
}
// Setup stack pointer
if (uc_reg_write(handle, UC_X86_REG_ESP, &esp)) {
printf("not ok %d - Failed to set esp. quit!\n", log_num++);
return 2;
} else {
printf("ok %d - ESP set\n", log_num++);
}
if (uc_mem_write(handle, 0x301000, (uint8_t*)buf2, 4096)) {
printf("not ok %d - Failed to write random buffer 2 to memory, quit!\n", log_num++);
return 4;
}
else {
printf("ok %d - Random buffer 2 written to memory\n", log_num++);
}
// fill in sections that shouldn't get touched
if (uc_mem_write(handle, 0x1ff000, (uint8_t*)buf1, 4096)) {
printf("not ok %d - Failed to write random buffer 1 to memory, quit!\n", log_num++);
return 3;
} else {
printf("ok %d - Random buffer 1 written to memory\n", log_num++);
}
// write machine code to be emulated to memory
if (uc_mem_write(handle, 0x100000, PROGRAM, sizeof(PROGRAM))) {
printf("not ok %d - Failed to write emulation code to memory, quit!\n", log_num++);
return 5;
}
else {
printf("ok %d - Program written to memory\n", log_num++);
}
if (uc_mem_write(handle, 0x301000, (uint8_t*)buf2, 4096)) {
printf("not ok %d - Failed to write random buffer 2 to memory, quit!\n", log_num++);
return 4;
} else {
printf("ok %d - Random buffer 2 written to memory\n", log_num++);
}
if (uc_hook_add(handle, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_CODE handler\n", log_num++);
return 6;
}
else {
printf("ok %d - UC_HOOK_CODE installed\n", log_num++);
}
// write machine code to be emulated to memory
if (uc_mem_write(handle, 0x100000, PROGRAM, sizeof(PROGRAM))) {
printf("not ok %d - Failed to write emulation code to memory, quit!\n", log_num++);
return 5;
} else {
printf("ok %d - Program written to memory\n", log_num++);
}
// intercept memory write events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_WRITE, hook_mem_write, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_WRITE handler\n", log_num++);
return 7;
}
else {
printf("ok %d - UC_HOOK_MEM_WRITE installed\n", log_num++);
}
if (uc_hook_add(handle, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_CODE handler\n", log_num++);
return 6;
} else {
printf("ok %d - UC_HOOK_CODE installed\n", log_num++);
}
// intercept invalid memory events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_INVALID, hook_mem_invalid, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_INVALID handler\n", log_num++);
return 8;
}
else {
printf("ok %d - UC_HOOK_MEM_INVALID installed\n", log_num++);
}
// intercept memory write events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_WRITE, hook_mem_write, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_WRITE handler\n", log_num++);
return 7;
} else {
printf("ok %d - UC_HOOK_MEM_WRITE installed\n", log_num++);
}
// emulate machine code until told to stop by hook_code
printf("# BEGIN execution\n");
err = uc_emu_start(handle, 0x100000, 0x400000, 0, 0);
if (err != UC_ERR_OK) {
printf("not ok %d - Failure on uc_emu_start() with error %u:%s\n", log_num++, err, uc_strerror(err));
return 9;
}
else {
printf("ok %d - uc_emu_start complete\n", log_num++);
}
printf("# END execution\n");
// intercept invalid memory events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_INVALID, hook_mem_invalid, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_INVALID handler\n", log_num++);
return 8;
} else {
printf("ok %d - UC_HOOK_MEM_INVALID installed\n", log_num++);
}
// get ending EIP
if (uc_reg_read(handle, UC_X86_REG_EIP, &eip)) {
printf("not ok %d - Failed to read eip.\n", log_num++);
}
else {
printf("ok %d - Ending EIP 0x%x\n", log_num++, eip);
}
// emulate machine code until told to stop by hook_code
printf("# BEGIN execution\n");
err = uc_emu_start(handle, 0x100000, 0x400000, 0, 0);
if (err != UC_ERR_OK) {
printf("not ok %d - Failure on uc_emu_start() with error %u:%s\n", log_num++, err, uc_strerror(err));
return 9;
} else {
printf("ok %d - uc_emu_start complete\n", log_num++);
}
printf("# END execution\n");
//make sure that random blocks didn't get nuked
// fill in sections that shouldn't get touched
if (uc_mem_read(handle, 0x1ff000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 1 from memory\n", log_num++);
}
else {
printf("ok %d - Random buffer 1 read from memory\n", log_num++);
if (memcmp(buf1, readbuf, 4096)) {
printf("not ok %d - Random buffer 1 contents are incorrect\n", log_num++);
}
else {
printf("ok %d - Random buffer 1 contents are correct\n", log_num++);
}
}
// get ending EIP
if (uc_reg_read(handle, UC_X86_REG_EIP, &eip)) {
printf("not ok %d - Failed to read eip.\n", log_num++);
} else {
printf("ok %d - Ending EIP 0x%x\n", log_num++, eip);
}
if (uc_mem_read(handle, 0x301000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 2 from memory\n", log_num++);
}
else {
printf("ok %d - Random buffer 2 read from memory\n", log_num++);
if (memcmp(buf2, readbuf, 4096)) {
printf("not ok %d - Random buffer 2 contents are incorrect\n", log_num++);
}
else {
printf("ok %d - Random buffer 2 contents are correct\n", log_num++);
}
}
//make sure that random blocks didn't get nuked
// fill in sections that shouldn't get touched
if (uc_mem_read(handle, 0x1ff000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 1 from memory\n", log_num++);
} else {
printf("ok %d - Random buffer 1 read from memory\n", log_num++);
if (memcmp(buf1, readbuf, 4096)) {
printf("not ok %d - Random buffer 1 contents are incorrect\n", log_num++);
} else {
printf("ok %d - Random buffer 1 contents are correct\n", log_num++);
}
}
if (uc_close(&handle) == UC_ERR_OK) {
printf("ok %d - uc_close complete\n", log_num++);
}
else {
printf("not ok %d - uc_close complete\n", log_num++);
}
if (uc_mem_read(handle, 0x301000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 2 from memory\n", log_num++);
} else {
printf("ok %d - Random buffer 2 read from memory\n", log_num++);
if (memcmp(buf2, readbuf, 4096)) {
printf("not ok %d - Random buffer 2 contents are incorrect\n", log_num++);
} else {
printf("ok %d - Random buffer 2 contents are correct\n", log_num++);
}
}
return 0;
if (uc_close(&handle) == UC_ERR_OK) {
printf("ok %d - uc_close complete\n", log_num++);
} else {
printf("not ok %d - uc_close complete\n", log_num++);
}
return 0;
}

446
samples/mem_protect.c
View File

@ -1,23 +1,22 @@
/*
uc_mem_protect demo / unit test
uc_mem_protect demo / unit test
Copyright(c) 2015 Chris Eagle
Copyright(c) 2015 Chris Eagle
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
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.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
*/
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
@ -30,23 +29,23 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include <unicorn/unicorn.h>
unsigned char PROGRAM[] =
"\xc7\x05\x00\x00\x20\x00\x41\x41\x41\x41\x90\xc7\x05\x00\x00\x20"
"\x00\x42\x42\x42\x42\xc7\x05\x00\x00\x30\x00\x43\x43\x43\x43\x90"
"\xc7\x05\x00\x00\x30\x00\x44\x44\x44\x44\xc7\x05\x00\x00\x40\x00"
"\x45\x45\x45\x45\x90\xc7\x05\x00\x00\x40\x00\x46\x46\x46\x46\xc7"
"\x05\x00\xf8\x3f\x00\x47\x47\x47\x47\xc7\x05\x00\x18\x40\x00\x48"
"\x48\x48\x48\xf4";
// total size: 84 bytes
"\xc7\x05\x00\x00\x20\x00\x41\x41\x41\x41\x90\xc7\x05\x00\x00\x20"
"\x00\x42\x42\x42\x42\xc7\x05\x00\x00\x30\x00\x43\x43\x43\x43\x90"
"\xc7\x05\x00\x00\x30\x00\x44\x44\x44\x44\xc7\x05\x00\x00\x40\x00"
"\x45\x45\x45\x45\x90\xc7\x05\x00\x00\x40\x00\x46\x46\x46\x46\xc7"
"\x05\x00\xf8\x3f\x00\x47\x47\x47\x47\xc7\x05\x00\x18\x40\x00\x48"
"\x48\x48\x48\xf4";
// total size: 84 bytes
/*
bits 32
bits 32
; assumes code section at 0x100000
; assumes data section at 0x200000, initially rw
; assumes data section at 0x300000, initially rw
; assumes data section at 0x400000, initially rw
; assumes code section at 0x100000
; assumes data section at 0x200000, initially rw
; assumes data section at 0x300000, initially rw
; assumes data section at 0x400000, initially rw
; with installed hooks unmaps or maps on each nop
; with installed hooks unmaps or maps on each nop
mov dword [0x200000], 0x41414141
nop ; mark it RO
@ -63,13 +62,13 @@ bits 32
mov dword [0x401800], 0x48484848 ; make sure surrounding areas remained RW
hlt ; tell hook function we are done
*/
*/
int test_num = 0;
uint32_t tests[] = {
0x41414141,
0x43434343,
0x45454545
0x41414141,
0x43434343,
0x45454545
};
static int log_num = 1;
@ -80,244 +79,223 @@ static int log_num = 1;
// callback for tracing instruction
static void hook_code(uch handle, uint64_t addr, uint32_t size, void *user_data)
{
uint8_t opcode;
uint32_t testval;
if (uc_mem_read(handle, addr, &opcode, 1) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
}
printf("ok %d - uc_mem_read for opcode at address 0x%" PRIx64 "\n", log_num++, addr);
switch (opcode) {
case 0x90: //nop
printf("# Handling NOP\n");
if (uc_mem_read(handle, 0x200000 + test_num * 0x100000, (uint8_t*)&testval, sizeof(testval)) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
}
else {
printf("ok %d - good uc_mem_read for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
printf("# uc_mem_read for test %d\n", test_num);
uint8_t opcode;
uint32_t testval;
if (uc_mem_read(handle, addr, &opcode, 1) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
}
printf("ok %d - uc_mem_read for opcode at address 0x%" PRIx64 "\n", log_num++, addr);
switch (opcode) {
case 0x90: //nop
printf("# Handling NOP\n");
if (uc_mem_read(handle, 0x200000 + test_num * 0x100000, (uint8_t*)&testval, sizeof(testval)) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
} else {
printf("ok %d - good uc_mem_read for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
printf("# uc_mem_read for test %d\n", test_num);
if (testval == tests[test_num]) {
printf("ok %d - passed test %d\n", log_num++, test_num);
if (testval == tests[test_num]) {
printf("ok %d - passed test %d\n", log_num++, test_num);
} else {
printf("not ok %d - failed test %d\n", log_num++, test_num);
printf("# Expected: 0x%x\n",tests[test_num]);
printf("# Received: 0x%x\n", testval);
}
}
else {
printf("not ok %d - failed test %d\n", log_num++, test_num);
printf("# Expected: 0x%x\n",tests[test_num]);
printf("# Received: 0x%x\n", testval);
if (uc_mem_protect(handle, 0x200000 + test_num * 0x100000, 0x1000, UC_PROT_READ) != UC_ERR_OK) {
printf("not ok %d - uc_mem_protect fail during hook_code callback, addr: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
} else {
printf("ok %d - uc_mem_protect success\n", log_num++);
}
}
if (uc_mem_protect(handle, 0x200000 + test_num * 0x100000, 0x1000, UC_PROT_READ) != UC_ERR_OK) {
printf("not ok %d - uc_mem_protect fail during hook_code callback, addr: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
}
else {
printf("ok %d - uc_mem_protect success\n", log_num++);
}
test_num++;
break;
case 0xf4: //hlt
printf("# Handling HLT\n");
if (uc_emu_stop(handle) != UC_ERR_OK) {
printf("not ok %d - uc_emu_stop fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
_exit(-1);
}
else {
printf("ok %d - hlt encountered, uc_emu_stop called\n", log_num++);
}
break;
default: //all others
printf("# Handling OTHER\n");
break;
}
test_num++;
break;
case 0xf4: //hlt
printf("# Handling HLT\n");
if (uc_emu_stop(handle) != UC_ERR_OK) {
printf("not ok %d - uc_emu_stop fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
_exit(-1);
} else {
printf("ok %d - hlt encountered, uc_emu_stop called\n", log_num++);
}
break;
default: //all others
printf("# Handling OTHER\n");
break;
}
}
// callback for tracing memory access (READ or WRITE)
static void hook_mem_write(uch handle, uc_mem_type type,
uint64_t addr, int size, int64_t value, void *user_data)
{
printf("# write to memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
printf("# write to memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
}
// callback for tracing invalid memory access (READ or WRITE)
static bool hook_mem_invalid(uch handle, uc_mem_type type,
uint64_t addr, int size, int64_t value, void *user_data)
{
uint32_t testval;
switch(type) {
default:
printf("not ok %d - UC_HOOK_MEM_INVALID type: %d at 0x%" PRIx64 "\n", log_num++, type, addr);
return false;
case UC_MEM_WRITE_PROT:
printf("# write to non-writeable memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
uint32_t testval;
switch(type) {
default:
printf("not ok %d - UC_HOOK_MEM_INVALID type: %d at 0x%" PRIx64 "\n", log_num++, type, addr);
return false;
case UC_MEM_WRITE_PROT:
printf("# write to non-writeable memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
if (uc_mem_read(handle, addr, (uint8_t*)&testval, sizeof(testval)) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail for address: 0x%" PRIx64 "\n", log_num++, addr);
}
else {
printf("ok %d - uc_mem_read success after mem_protect at test %d\n", log_num++, test_num - 1);
}
if (uc_mem_read(handle, addr, (uint8_t*)&testval, sizeof(testval)) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail for address: 0x%" PRIx64 "\n", log_num++, addr);
} else {
printf("ok %d - uc_mem_read success after mem_protect at test %d\n", log_num++, test_num - 1);
}
if (uc_mem_protect(handle, addr & ~0xfffL, 0x1000, UC_PROT_READ | UC_PROT_WRITE) != UC_ERR_OK) {
printf("not ok %d - uc_mem_protect fail during hook_mem_invalid callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
}
else {
printf("ok %d - uc_mem_protect success\n", log_num++);
}
return true;
}
if (uc_mem_protect(handle, addr & ~0xfffL, 0x1000, UC_PROT_READ | UC_PROT_WRITE) != UC_ERR_OK) {
printf("not ok %d - uc_mem_protect fail during hook_mem_invalid callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
} else {
printf("ok %d - uc_mem_protect success\n", log_num++);
}
return true;
}
}
int main(int argc, char **argv, char **envp)
{
uch handle, trace1, trace2;
uc_err err;
uint32_t addr, testval;
int32_t buf1[1024], buf2[1024], readbuf[1024];
int i;
//don't really care about quality of randomness
srand(time(NULL));
for (i = 0; i < 1024; i++) {
buf1[i] = rand();
buf2[i] = rand();
}
uch handle, trace1, trace2;
uc_err err;
uint32_t addr, testval;
int32_t buf1[1024], buf2[1024], readbuf[1024];
int i;
printf("# Memory protect test\n");
//don't really care about quality of randomness
srand(time(NULL));
for (i = 0; i < 1024; i++) {
buf1[i] = rand();
buf2[i] = rand();
}
// Initialize emulator in X86-32bit mode
err = uc_open(UC_ARCH_X86, UC_MODE_32, &handle);
if (err) {
printf("not ok %d - Failed on uc_open() with error returned: %u\n", log_num++, err);
return 1;
}
else {
printf("ok %d - uc_open() success\n", log_num++);
}
printf("# Memory protect test\n");
uc_mem_map(handle, CODE_SECTION, CODE_SIZE, UC_PROT_READ | UC_PROT_EXEC);
uc_mem_map(handle, 0x200000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x300000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x3ff000, 0x3000, UC_PROT_READ | UC_PROT_WRITE);
// Initialize emulator in X86-32bit mode
err = uc_open(UC_ARCH_X86, UC_MODE_32, &handle);
if (err) {
printf("not ok %d - Failed on uc_open() with error returned: %u\n", log_num++, err);
return 1;
} else {
printf("ok %d - uc_open() success\n", log_num++);
}
// fill in sections that shouldn't get touched
if (uc_mem_write(handle, 0x3ff000, (uint8_t*)buf1, 4096)) {
printf("not ok %d - Failed to write random buffer 1 to memory, quit!\n", log_num++);
return 2;
}
else {
printf("ok %d - Random buffer 1 written to memory\n", log_num++);
}
uc_mem_map(handle, CODE_SECTION, CODE_SIZE, UC_PROT_READ | UC_PROT_EXEC);
uc_mem_map(handle, 0x200000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x300000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x3ff000, 0x3000, UC_PROT_READ | UC_PROT_WRITE);
if (uc_mem_write(handle, 0x401000, (uint8_t*)buf2, 4096)) {
printf("not ok %d - Failed to write random buffer 2 to memory, quit!\n", log_num++);
return 3;
}
else {
printf("ok %d - Random buffer 2 written to memory\n", log_num++);
}
// fill in sections that shouldn't get touched
if (uc_mem_write(handle, 0x3ff000, (uint8_t*)buf1, 4096)) {
printf("not ok %d - Failed to write random buffer 1 to memory, quit!\n", log_num++);
return 2;
} else {
printf("ok %d - Random buffer 1 written to memory\n", log_num++);
}
// write machine code to be emulated to memory
if (uc_mem_write(handle, CODE_SECTION, PROGRAM, sizeof(PROGRAM))) {
printf("not ok %d - Failed to write emulation code to memory, quit!\n", log_num++);
return 4;
}
else {
printf("ok %d - Program written to memory\n", log_num++);
}
if (uc_mem_write(handle, 0x401000, (uint8_t*)buf2, 4096)) {
printf("not ok %d - Failed to write random buffer 2 to memory, quit!\n", log_num++);
return 3;
} else {
printf("ok %d - Random buffer 2 written to memory\n", log_num++);
}
if (uc_hook_add(handle, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_CODE handler\n", log_num++);
return 5;
}
else {
printf("ok %d - UC_HOOK_CODE installed\n", log_num++);
}
// write machine code to be emulated to memory
if (uc_mem_write(handle, CODE_SECTION, PROGRAM, sizeof(PROGRAM))) {
printf("not ok %d - Failed to write emulation code to memory, quit!\n", log_num++);
return 4;
} else {
printf("ok %d - Program written to memory\n", log_num++);
}
// intercept memory write events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_WRITE, hook_mem_write, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_WRITE handler\n", log_num++);
return 6;
}
else {
printf("ok %d - UC_HOOK_MEM_WRITE installed\n", log_num++);
}
if (uc_hook_add(handle, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_CODE handler\n", log_num++);
return 5;
} else {
printf("ok %d - UC_HOOK_CODE installed\n", log_num++);
}
// intercept invalid memory events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_INVALID, hook_mem_invalid, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_INVALID handler\n", log_num++);
return 7;
}
else {
printf("ok %d - UC_HOOK_MEM_INVALID installed\n", log_num++);
}
// intercept memory write events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_WRITE, hook_mem_write, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_WRITE handler\n", log_num++);
return 6;
} else {
printf("ok %d - UC_HOOK_MEM_WRITE installed\n", log_num++);
}
// emulate machine code until told to stop by hook_code
printf("# BEGIN execution\n");
err = uc_emu_start(handle, CODE_SECTION, CODE_SECTION + CODE_SIZE, 0, 0);
if (err != UC_ERR_OK) {
printf("not ok %d - Failure on uc_emu_start() with error %u:%s\n", log_num++, err, uc_strerror(err));
return 8;
}
else {
printf("ok %d - uc_emu_start complete\n", log_num++);
}
printf("# END execution\n");
// intercept invalid memory events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_INVALID, hook_mem_invalid, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_INVALID handler\n", log_num++);
return 7;
} else {
printf("ok %d - UC_HOOK_MEM_INVALID installed\n", log_num++);
}
//read from the remapped memory
testval = 0x42424242;
for (addr = 0x200000; addr <= 0x400000; addr += 0x100000) {
uint32_t val;
if (uc_mem_read(handle, addr, (uint8_t*)&val, sizeof(val)) != UC_ERR_OK) {
printf("not ok %d - Failed uc_mem_read for address 0x%x\n", log_num++, addr);
}
else {
printf("ok %d - Good uc_mem_read from 0x%x\n", log_num++, addr);
}
if (val != testval) {
printf("not ok %d - Read 0x%x, expected 0x%x\n", log_num++, val, testval);
}
else {
printf("ok %d - Correct value retrieved\n", log_num++);
}
testval += 0x02020202;
}
// emulate machine code until told to stop by hook_code
printf("# BEGIN execution\n");
err = uc_emu_start(handle, CODE_SECTION, CODE_SECTION + CODE_SIZE, 0, 0);
if (err != UC_ERR_OK) {
printf("not ok %d - Failure on uc_emu_start() with error %u:%s\n", log_num++, err, uc_strerror(err));
return 8;
} else {
printf("ok %d - uc_emu_start complete\n", log_num++);
}
printf("# END execution\n");
//account for the two mods made by the machine code
buf1[512] = 0x47474747;
buf2[512] = 0x48484848;
//read from the remapped memory
testval = 0x42424242;
for (addr = 0x200000; addr <= 0x400000; addr += 0x100000) {
uint32_t val;
if (uc_mem_read(handle, addr, (uint8_t*)&val, sizeof(val)) != UC_ERR_OK) {
printf("not ok %d - Failed uc_mem_read for address 0x%x\n", log_num++, addr);
} else {
printf("ok %d - Good uc_mem_read from 0x%x\n", log_num++, addr);
}
if (val != testval) {
printf("not ok %d - Read 0x%x, expected 0x%x\n", log_num++, val, testval);
} else {
printf("ok %d - Correct value retrieved\n", log_num++);
}
testval += 0x02020202;
}
//make sure that random blocks didn't get nuked
// fill in sections that shouldn't get touched
if (uc_mem_read(handle, 0x3ff000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 1 from memory\n", log_num++);
}
else {
printf("ok %d - Random buffer 1 read from memory\n", log_num++);
if (memcmp(buf1, readbuf, 4096)) {
printf("not ok %d - Random buffer 1 contents are incorrect\n", log_num++);
}
else {
printf("ok %d - Random buffer 1 contents are correct\n", log_num++);
}
}
//account for the two mods made by the machine code
buf1[512] = 0x47474747;
buf2[512] = 0x48484848;
if (uc_mem_read(handle, 0x401000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 2 from memory\n", log_num++);
}
else {
printf("ok %d - Random buffer 2 read from memory\n", log_num++);
if (memcmp(buf2, readbuf, 4096)) {
printf("not ok %d - Random buffer 2 contents are incorrect\n", log_num++);
}
else {
printf("ok %d - Random buffer 2 contents are correct\n", log_num++);
}
}
//make sure that random blocks didn't get nuked
// fill in sections that shouldn't get touched
if (uc_mem_read(handle, 0x3ff000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 1 from memory\n", log_num++);
} else {
printf("ok %d - Random buffer 1 read from memory\n", log_num++);
if (memcmp(buf1, readbuf, 4096)) {
printf("not ok %d - Random buffer 1 contents are incorrect\n", log_num++);
} else {
printf("ok %d - Random buffer 1 contents are correct\n", log_num++);
}
}
if (uc_close(&handle) == UC_ERR_OK) {
printf("ok %d - uc_close complete\n", log_num++);
}
else {
printf("not ok %d - uc_close complete\n", log_num++);
}
if (uc_mem_read(handle, 0x401000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 2 from memory\n", log_num++);
} else {
printf("ok %d - Random buffer 2 read from memory\n", log_num++);
if (memcmp(buf2, readbuf, 4096)) {
printf("not ok %d - Random buffer 2 contents are incorrect\n", log_num++);
} else {
printf("ok %d - Random buffer 2 contents are correct\n", log_num++);
}
}
return 0;
if (uc_close(&handle) == UC_ERR_OK) {
printf("ok %d - uc_close complete\n", log_num++);
} else {
printf("not ok %d - uc_close complete\n", log_num++);
}
return 0;
}

433
samples/mem_unmap.c
View File

@ -1,23 +1,23 @@
/*
uc_mem_unmap demo / unit test
uc_mem_unmap demo / unit test
Copyright(c) 2015 Chris Eagle
Copyright(c) 2015 Chris Eagle
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
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.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
*/
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
@ -30,19 +30,19 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include <unicorn/unicorn.h>
unsigned char PROGRAM[] =
"\xc7\x05\x00\x00\x20\x00\x41\x41\x41\x41\x90\xc7\x05\x00\x00\x20"
"\x00\x42\x42\x42\x42\xc7\x05\x00\x00\x30\x00\x43\x43\x43\x43\x90"
"\xc7\x05\x00\x00\x30\x00\x44\x44\x44\x44\xc7\x05\x00\x00\x40\x00"
"\x45\x45\x45\x45\x90\xc7\x05\x00\x00\x40\x00\x46\x46\x46\x46\xf4";
// total size: 64 bytes
"\xc7\x05\x00\x00\x20\x00\x41\x41\x41\x41\x90\xc7\x05\x00\x00\x20"
"\x00\x42\x42\x42\x42\xc7\x05\x00\x00\x30\x00\x43\x43\x43\x43\x90"
"\xc7\x05\x00\x00\x30\x00\x44\x44\x44\x44\xc7\x05\x00\x00\x40\x00"
"\x45\x45\x45\x45\x90\xc7\x05\x00\x00\x40\x00\x46\x46\x46\x46\xf4";
// total size: 64 bytes
/*
; assumes code section at 0x100000
; assumes data section at 0x200000, initially rw
; assumes data section at 0x300000, initially rw
; assumes data section at 0x400000, initially rw
; assumes code section at 0x100000
; assumes data section at 0x200000, initially rw
; assumes data section at 0x300000, initially rw
; assumes data section at 0x400000, initially rw
; with installed hooks unmaps or maps on each nop
; with installed hooks unmaps or maps on each nop
mov dword [0x200000], 0x41414141
nop ; unmap it
@ -57,13 +57,13 @@ unsigned char PROGRAM[] =
mov dword [0x400000], 0x46464646
hlt ; tell hook function we are done
*/
*/
int test_num = 0;
uint32_t tests[] = {
0x41414141,
0x43434343,
0x45454545
0x41414141,
0x43434343,
0x45454545
};
static int log_num = 1;
@ -74,240 +74,219 @@ static int log_num = 1;
// callback for tracing instruction
static void hook_code(uch handle, uint64_t addr, uint32_t size, void *user_data)
{
uint8_t opcode;
uint32_t testval;
if (uc_mem_read(handle, addr, &opcode, 1) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
}
printf("ok %d - uc_mem_read for opcode at address 0x%" PRIx64 "\n", log_num++, addr);
switch (opcode) {
case 0x90: //nop
printf("# Handling NOP\n");
if (uc_mem_read(handle, 0x200000 + test_num * 0x100000, (uint8_t*)&testval, sizeof(testval)) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
}
else {
printf("ok %d - good uc_mem_read for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
printf("# uc_mem_read for test %d\n", test_num);
uint8_t opcode;
uint32_t testval;
if (uc_mem_read(handle, addr, &opcode, 1) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
}
printf("ok %d - uc_mem_read for opcode at address 0x%" PRIx64 "\n", log_num++, addr);
switch (opcode) {
case 0x90: //nop
printf("# Handling NOP\n");
if (uc_mem_read(handle, 0x200000 + test_num * 0x100000, (uint8_t*)&testval, sizeof(testval)) != UC_ERR_OK) {
printf("not ok %d - uc_mem_read fail for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
} else {
printf("ok %d - good uc_mem_read for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
printf("# uc_mem_read for test %d\n", test_num);
if (testval == tests[test_num]) {
printf("ok %d - passed test %d\n", log_num++, test_num);
if (testval == tests[test_num]) {
printf("ok %d - passed test %d\n", log_num++, test_num);
} else {
printf("not ok %d - failed test %d\n", log_num++, test_num);
printf("# Expected: 0x%x\n",tests[test_num]);
printf("# Received: 0x%x\n", testval);
}
}
else {
printf("not ok %d - failed test %d\n", log_num++, test_num);
printf("# Expected: 0x%x\n",tests[test_num]);
printf("# Received: 0x%x\n", testval);
if (uc_mem_unmap(handle, 0x200000 + test_num * 0x100000, 0x1000) != UC_ERR_OK) {
printf("not ok %d - uc_mem_unmap fail during hook_code callback, addr: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
} else {
printf("ok %d - uc_mem_unmap success\n", log_num++);
}
}
if (uc_mem_unmap(handle, 0x200000 + test_num * 0x100000, 0x1000) != UC_ERR_OK) {
printf("not ok %d - uc_mem_unmap fail during hook_code callback, addr: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
}
else {
printf("ok %d - uc_mem_unmap success\n", log_num++);
}
test_num++;
break;
case 0xf4: //hlt
printf("# Handling HLT\n");
if (uc_emu_stop(handle) != UC_ERR_OK) {
printf("not ok %d - uc_emu_stop fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
_exit(-1);
}
else {
printf("ok %d - hlt encountered, uc_emu_stop called\n", log_num++);
}
break;
default: //all others
printf("# Handling OTHER\n");
break;
}
test_num++;
break;
case 0xf4: //hlt
printf("# Handling HLT\n");
if (uc_emu_stop(handle) != UC_ERR_OK) {
printf("not ok %d - uc_emu_stop fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
_exit(-1);
} else {
printf("ok %d - hlt encountered, uc_emu_stop called\n", log_num++);
}
break;
default: //all others
printf("# Handling OTHER\n");
break;
}
}
// callback for tracing memory access (READ or WRITE)
static void hook_mem_write(uch handle, uc_mem_type type,
uint64_t addr, int size, int64_t value, void *user_data)
{
printf("# write to memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
printf("# write to memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
}
// callback for tracing invalid memory access (READ or WRITE)
static bool hook_mem_invalid(uch handle, uc_mem_type type,
uint64_t addr, int size, int64_t value, void *user_data)
{
uint32_t testval;
switch(type) {
default:
printf("not ok %d - UC_HOOK_MEM_INVALID type: %d at 0x%" PRIx64 "\n", log_num++, type, addr);
return false;
case UC_MEM_WRITE:
printf("# write to invalid memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
uint32_t testval;
switch(type) {
default:
printf("not ok %d - UC_HOOK_MEM_INVALID type: %d at 0x%" PRIx64 "\n", log_num++, type, addr);
return false;
case UC_MEM_WRITE:
printf("# write to invalid memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
if (uc_mem_read(handle, addr, (uint8_t*)&testval, sizeof(testval)) != UC_ERR_OK) {
printf("ok %d - uc_mem_read fail for address: 0x%" PRIx64 "\n", log_num++, addr);
}
else {
printf("not ok %d - uc_mem_read success after unmap at test %d\n", log_num++, test_num - 1);
}
if (uc_mem_read(handle, addr, (uint8_t*)&testval, sizeof(testval)) != UC_ERR_OK) {
printf("ok %d - uc_mem_read fail for address: 0x%" PRIx64 "\n", log_num++, addr);
} else {
printf("not ok %d - uc_mem_read success after unmap at test %d\n", log_num++, test_num - 1);
}
if (uc_mem_map(handle, addr & ~0xfffL, 0x1000, UC_PROT_READ | UC_PROT_WRITE) != UC_ERR_OK) {
printf("not ok %d - uc_mem_map fail during hook_mem_invalid callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
}
else {
printf("ok %d - uc_mem_map success\n", log_num++);
}
return true;
}
if (uc_mem_map(handle, addr & ~0xfffL, 0x1000, UC_PROT_READ | UC_PROT_WRITE) != UC_ERR_OK) {
printf("not ok %d - uc_mem_map fail during hook_mem_invalid callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
} else {
printf("ok %d - uc_mem_map success\n", log_num++);
}
return true;
}
}
int main(int argc, char **argv, char **envp)
{
uch handle, trace1, trace2;
uc_err err;
uint32_t addr, testval;
int32_t buf1[1024], buf2[1024], readbuf[1024];
int i;
//don't really care about quality of randomness
srand(time(NULL));
for (i = 0; i < 1024; i++) {
buf1[i] = rand();
buf2[i] = rand();
}
uch handle, trace1, trace2;
uc_err err;
uint32_t addr, testval;
int32_t buf1[1024], buf2[1024], readbuf[1024];
int i;
printf("# Memory unmapping test\n");
//don't really care about quality of randomness
srand(time(NULL));
for (i = 0; i < 1024; i++) {
buf1[i] = rand();
buf2[i] = rand();
}
// Initialize emulator in X86-32bit mode
err = uc_open(UC_ARCH_X86, UC_MODE_32, &handle);
if (err) {
printf("not ok %d - Failed on uc_open() with error returned: %u\n", log_num++, err);
return 1;
}
else {
printf("ok %d - uc_open() success\n", log_num++);
}
printf("# Memory unmapping test\n");
uc_mem_map(handle, CODE_SECTION, CODE_SIZE, UC_PROT_READ | UC_PROT_EXEC);
uc_mem_map(handle, 0x200000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x300000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x3ff000, 0x3000, UC_PROT_READ | UC_PROT_WRITE);
// Initialize emulator in X86-32bit mode
err = uc_open(UC_ARCH_X86, UC_MODE_32, &handle);
if (err) {
printf("not ok %d - Failed on uc_open() with error returned: %u\n", log_num++, err);
return 1;
} else {
printf("ok %d - uc_open() success\n", log_num++);
}
// fill in sections that shouldn't get touched
if (uc_mem_write(handle, 0x3ff000, (uint8_t*)buf1, 4096)) {
printf("not ok %d - Failed to write random buffer 1 to memory, quit!\n", log_num++);
return 2;
}
else {
printf("ok %d - Random buffer 1 written to memory\n", log_num++);
}
uc_mem_map(handle, CODE_SECTION, CODE_SIZE, UC_PROT_READ | UC_PROT_EXEC);
uc_mem_map(handle, 0x200000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x300000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
uc_mem_map(handle, 0x3ff000, 0x3000, UC_PROT_READ | UC_PROT_WRITE);
if (uc_mem_write(handle, 0x401000, (uint8_t*)buf2, 4096)) {
printf("not ok %d - Failed to write random buffer 2 to memory, quit!\n", log_num++);
return 3;
}
else {
printf("ok %d - Random buffer 2 written to memory\n", log_num++);
}
// fill in sections that shouldn't get touched
if (uc_mem_write(handle, 0x3ff000, (uint8_t*)buf1, 4096)) {
printf("not ok %d - Failed to write random buffer 1 to memory, quit!\n", log_num++);
return 2;
} else {
printf("ok %d - Random buffer 1 written to memory\n", log_num++);
}
// write machine code to be emulated to memory
if (uc_mem_write(handle, CODE_SECTION, PROGRAM, sizeof(PROGRAM))) {
printf("not ok %d - Failed to write emulation code to memory, quit!\n", log_num++);
return 4;
}
else {
printf("ok %d - Program written to memory\n", log_num++);
}
if (uc_mem_write(handle, 0x401000, (uint8_t*)buf2, 4096)) {
printf("not ok %d - Failed to write random buffer 2 to memory, quit!\n", log_num++);
return 3;
} else {
printf("ok %d - Random buffer 2 written to memory\n", log_num++);
}
if (uc_hook_add(handle, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_CODE handler\n", log_num++);
return 5;
}
else {
printf("ok %d - UC_HOOK_CODE installed\n", log_num++);
}
// write machine code to be emulated to memory
if (uc_mem_write(handle, CODE_SECTION, PROGRAM, sizeof(PROGRAM))) {
printf("not ok %d - Failed to write emulation code to memory, quit!\n", log_num++);
return 4;
} else {
printf("ok %d - Program written to memory\n", log_num++);
}
// intercept memory write events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_WRITE, hook_mem_write, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_WRITE handler\n", log_num++);
return 6;
}
else {
printf("ok %d - UC_HOOK_MEM_WRITE installed\n", log_num++);
}
if (uc_hook_add(handle, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_CODE handler\n", log_num++);
return 5;
} else {
printf("ok %d - UC_HOOK_CODE installed\n", log_num++);
}
// intercept invalid memory events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_INVALID, hook_mem_invalid, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_INVALID handler\n", log_num++);
return 7;
}
else {
printf("ok %d - UC_HOOK_MEM_INVALID installed\n", log_num++);
}
// intercept memory write events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_WRITE, hook_mem_write, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_WRITE handler\n", log_num++);
return 6;
} else {
printf("ok %d - UC_HOOK_MEM_WRITE installed\n", log_num++);
}
// emulate machine code until told to stop by hook_code
printf("# BEGIN execution\n");
err = uc_emu_start(handle, CODE_SECTION, CODE_SECTION + CODE_SIZE, 0, 0);
if (err != UC_ERR_OK) {
printf("not ok %d - Failure on uc_emu_start() with error %u:%s\n", log_num++, err, uc_strerror(err));
return 8;
}
else {
printf("ok %d - uc_emu_start complete\n", log_num++);
}
printf("# END execution\n");
// intercept invalid memory events
if (uc_hook_add(handle, &trace1, UC_HOOK_MEM_INVALID, hook_mem_invalid, NULL) != UC_ERR_OK) {
printf("not ok %d - Failed to install UC_HOOK_MEM_INVALID handler\n", log_num++);
return 7;
} else {
printf("ok %d - UC_HOOK_MEM_INVALID installed\n", log_num++);
}
//read from the remapped memory
testval = 0x42424242;
for (addr = 0x200000; addr <= 0x400000; addr += 0x100000) {
uint32_t val;
if (uc_mem_read(handle, addr, (uint8_t*)&val, sizeof(val)) != UC_ERR_OK) {
printf("not ok %d - Failed uc_mem_read for address 0x%x\n", log_num++, addr);
}
else {
printf("ok %d - Good uc_mem_read from 0x%x\n", log_num++, addr);
}
if (val != testval) {
printf("not ok %d - Read 0x%x, expected 0x%x\n", log_num++, val, testval);
}
else {
printf("ok %d - Correct value retrieved\n", log_num++);
}
testval += 0x02020202;
}
// emulate machine code until told to stop by hook_code
printf("# BEGIN execution\n");
err = uc_emu_start(handle, CODE_SECTION, CODE_SECTION + CODE_SIZE, 0, 0);
if (err != UC_ERR_OK) {
printf("not ok %d - Failure on uc_emu_start() with error %u:%s\n", log_num++, err, uc_strerror(err));
return 8;
} else {
printf("ok %d - uc_emu_start complete\n", log_num++);
}
printf("# END execution\n");
//make sure that random blocks didn't get nuked
// fill in sections that shouldn't get touched
if (uc_mem_read(handle, 0x3ff000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 1 from memory\n", log_num++);
}
else {
printf("ok %d - Random buffer 1 read from memory\n", log_num++);
if (memcmp(buf1, readbuf, 4096)) {
printf("not ok %d - Random buffer 1 contents are incorrect\n", log_num++);
}
else {
printf("ok %d - Random buffer 1 contents are correct\n", log_num++);
}
}
//read from the remapped memory
testval = 0x42424242;
for (addr = 0x200000; addr <= 0x400000; addr += 0x100000) {
uint32_t val;
if (uc_mem_read(handle, addr, (uint8_t*)&val, sizeof(val)) != UC_ERR_OK) {
printf("not ok %d - Failed uc_mem_read for address 0x%x\n", log_num++, addr);
} else {
printf("ok %d - Good uc_mem_read from 0x%x\n", log_num++, addr);
}
if (val != testval) {
printf("not ok %d - Read 0x%x, expected 0x%x\n", log_num++, val, testval);
} else {
printf("ok %d - Correct value retrieved\n", log_num++);
}
testval += 0x02020202;
}
if (uc_mem_read(handle, 0x401000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 2 from memory\n", log_num++);
}
else {
printf("ok %d - Random buffer 2 read from memory\n", log_num++);
if (memcmp(buf2, readbuf, 4096)) {
printf("not ok %d - Random buffer 2 contents are incorrect\n", log_num++);
}
else {
printf("ok %d - Random buffer 2 contents are correct\n", log_num++);
}
}
//make sure that random blocks didn't get nuked
// fill in sections that shouldn't get touched
if (uc_mem_read(handle, 0x3ff000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 1 from memory\n", log_num++);
} else {
printf("ok %d - Random buffer 1 read from memory\n", log_num++);
if (memcmp(buf1, readbuf, 4096)) {
printf("not ok %d - Random buffer 1 contents are incorrect\n", log_num++);
} else {
printf("ok %d - Random buffer 1 contents are correct\n", log_num++);
}
}
if (uc_close(&handle) == UC_ERR_OK) {
printf("ok %d - uc_close complete\n", log_num++);
}
else {
printf("not ok %d - uc_close complete\n", log_num++);
}
if (uc_mem_read(handle, 0x401000, (uint8_t*)readbuf, 4096)) {
printf("not ok %d - Failed to read random buffer 2 from memory\n", log_num++);
} else {
printf("ok %d - Random buffer 2 read from memory\n", log_num++);
if (memcmp(buf2, readbuf, 4096)) {
printf("not ok %d - Random buffer 2 contents are incorrect\n", log_num++);
} else {
printf("ok %d - Random buffer 2 contents are correct\n", log_num++);
}
}
return 0;
if (uc_close(&handle) == UC_ERR_OK) {
printf("ok %d - uc_close complete\n", log_num++);
} else {
printf("not ok %d - uc_close complete\n", log_num++);
}
return 0;
}

21
uc.c
View File

@ -670,14 +670,14 @@ static uint8_t *copy_region(uch handle, MemoryRegion *mr)
}
/*
Split the given MemoryRegion at the indicated address for the indicated size
this may result in the create of up to 3 spanning sections. If the delete
parameter is true, the no new section will be created to replace the indicate
range. This functions exists to support uc_mem_protect and uc_mem_unmap.
Split the given MemoryRegion at the indicated address for the indicated size
this may result in the create of up to 3 spanning sections. If the delete
parameter is true, the no new section will be created to replace the indicate
range. This functions exists to support uc_mem_protect and uc_mem_unmap.
This is a static function and callers have already done some preliminary
parameter validation.
*/
This is a static function and callers have already done some preliminary
parameter validation.
*/
//TODO: investigate whether qemu region manipulation functions already offer this capability
static bool split_region(uch handle, MemoryRegion *mr, uint64_t address, size_t size, bool do_delete)
{
@ -709,7 +709,7 @@ static bool split_region(uch handle, MemoryRegion *mr, uint64_t address, size_t
perms = mr->perms;
begin = mr->addr;
end = mr->end;
if (uc_mem_unmap(handle, mr->addr, int128_get64(mr->size)) != UC_ERR_OK)
goto error;
@ -784,7 +784,7 @@ uc_err uc_mem_protect(uch handle, uint64_t address, size_t size, uint32_t perms)
// check for only valid permissions
if ((perms & ~UC_PROT_ALL) != 0)
return UC_ERR_INVAL;
//check that user's entire requested block is mapped
if (!check_mem_area(uc, address, size))
return UC_ERR_NOMEM;
@ -860,8 +860,7 @@ uc_err uc_mem_unmap(uch handle, uint64_t address, size_t size)
break;
}
}
}
else {
} else {
//ouch, we are going to need to subdivide blocks
size_t count = 0, len;
while(count < size) {