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tracer.c
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#include "arm_single.h"
#include "tracer.h"
#ifdef __cplusplus
extern "C" {
#endif
void __exidx_start() {}
void __exidx_end() {}
#ifdef __cplusplus
}
#endif
#define THREAD_LIST_NUM 100
int DEBUG_MSG_PRINT = 0;
int arm_code_pass = 0;
int thumb_code_pass = 0;
int thread_list_cnt = 0;
unsigned int counter = 0;
unsigned int arm_pass_pc = 0;
unsigned int thumb_pass_pc = 0;
unsigned long read_start_addr = 0, read_end_addr = 0;
pid_t bkup_pid = 0;
pid_t attach_thread_list[THREAD_LIST_NUM] = {0,};
LogEntry log_entry;
FILE * log_fd;
static void usage(char *ex_name) {
fprintf(stderr, " [ Usage ]\n\t$ %s [OPTION]\n", ex_name);
fprintf(stderr, "\n [ OPTION ]\n\
-d\t(Debug Level)\n\
\t0 : Default Level. No Debug MSG Print.\n\
\t1 : Debug Level 1. asdfasdf\n\
\t2 : Debug Level 2. qwerqwer\n\n\
-s\t(Skip Dump Instruction line)\n\n\
-f\t(Fork & attach)\n\
\tFork > Excution > Attach, So args is Program Name.\n\n\
-p\t(Pid & attach)\n\
\tGet PID > Attach, So args is PID.\n\n\
-i\t(Target Name)\n\
\tInput Data File Name.\n\n\
-o\t(Output Name)\n\
\tOutput File(dump.log) Name.\n\n\
\n");
fprintf(stderr, " [ Example ]\n\
$ %s -d 1 -f /bin/ls\n\
$ %s -p 1234 -i temp\n\n"\
, ex_name, ex_name);
exit(2);
}
int main(int argc, char* argv[])
{
pthread_t thread;
int argv_opt, opt = 0, order = 0;
int precond = 1;
char mapinfo_libc[128] = {0, };
char mapinfo_libtarget[128] = {0, };
int skip = 0;
int status;
pid_t pid, pid_wait, tid;
arm_regs regs;
unsigned long mode;
unsigned long curr_pc, next_pc;
Instruction curr_ins, next_ins, bkup_ins;
unsigned short inst1;
int instr_len, cnt = 0;
unsigned long check_func_addr[5];
Instruction check_func_instr[5];
unsigned int strex_check = 0;
unsigned int strex_count = 0;
int open_btn = 0, open_cnt = 0;
unsigned long arg_temp;
char *arg_arg[10] = {0, };
char arg_str[128] = {0, };
char target_str[128] = {0, };
char output_file_name[128] = "./dump.log";
unsigned long swi_temp;
unsigned char swi_str[128] = {0, };
unsigned long open_ret_addr = 0;
unsigned long fread_ret_addr = 0;
unsigned long read_ret_addr = 0;
unsigned long memcpy_ret_addr = 0;
unsigned long target_fd_num = 0;
unsigned long target_fd_addr = 0;
int target_monitor = 0;
unsigned int read_check = 0, read_size = 0;
unsigned long read_src_addr = 0;
unsigned long read_dst_addr = 0;
unsigned long file_offset = 0;
unsigned long file_base_offset = 0;
unsigned long file_start_offset = 0;
unsigned long file_curr_offset = 0;
//unsigned long read_start_addr = 0, read_end_addr;
unsigned long crash_pc = 0;
clock_t c_start, c_end;
time_t t_start, t_end;
double c_time, t_time;
mapdump_t map_addr[5];
char keyword[64]={0,};
int memsize, asdf = 0;
if ( argc < 2 ) {
usage(argv[0]);
}
while( -1 !=( argv_opt = getopt(argc, argv, "d:s:f:p:i:o:h") ) )
{
switch( argv_opt )
{
case 'd' :
DEBUG_MSG_PRINT = atoi(optarg);
break;
case 's' :
skip = atoi(optarg);
break;
case 'f' :
opt = 1;
strncpy(arg_str, optarg, sizeof(arg_str)-1);
arg_str[sizeof(arg_str)-1] = '\0';
int i, length, start_offset;
for ( i = 0, length = 0, cnt = 0, start_offset = 0 ; i <= strlen(arg_str) ; i++, length++ ) {
if ( arg_str[i] == ' ' || arg_str[i] == '\0' ) {
arg_arg[cnt] = (char *)malloc(sizeof(char) * length + 1);
strncpy(arg_arg[cnt], arg_str + i - length, length);
length = -1;
cnt++;
}
}
break;
case 'p' :
opt = 2;
pid = atoi(optarg);
pid = abs(pid);
break;
case 'i' :
strncpy(target_str, optarg, strlen(optarg));
//target_str[strlen(optarg)-1] = '\0';
break;
case 'o' :
memset(output_file_name, 0x0, 128);
strncpy(output_file_name, optarg, strlen(optarg));
break;
case 'h' :
usage(argv[0]);
break;
case '?' :
fprintf(stderr, "\n[?] Unknown Option : %c\n\n", optopt);
usage(argv[0]);
}
}
if ( opt == 1 ) {
precond = 0;
pid = fork();
bkup_pid = pid;
if ( pid == -1 ) {
perror("fork");
}
else if ( pid == 0 ) {
fprintf(stdout, "%s\n", arg_str);
ptrace(PTRACE_TRACEME, 0, 0, 0);
if ( -1 == execv( arg_arg[0], arg_arg ) ) {
perror("[!] EXECV Fail");
exit(1);
}
}
}
else if ( opt == 2 ) {
precond = 1;
if ( -1 == ptrace(PTRACE_ATTACH, pid, NULL, NULL) ) {
perror("[!] ATTACH Fail");
exit(1);
}
bkup_pid = pid;
attach_thread_list[thread_list_cnt++] = pid;
if ( target_str == NULL ) {
sprintf(target_str, ".hwp");
}
fprintf(stdout, "target : %s\n", target_str);
}
else {
usage(argv[0]);
}
fprintf(stdout, "attach program pid : %d\n", pid);
fprintf(stdout, "this program pid : %d\n\n", getpid());
fprintf(stdout, ">>> Skip Dump Line : %d\n", skip);
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "attach program pid : %d\n", pid);
fprintf(stderr, "this program pid : %d\n\n", getpid());
fprintf(stderr, ">>> Skip Dump Line : %d\n", skip);
}
pthread_create(&thread, NULL, inputCommand, (void *)&order);
pid_wait = waitProcess(0, &pid, &status, NULL, NULL);
ptrace(PTRACE_SETOPTIONS, pid, 0, (void *)(PTRACE_O_TRACECLONE) );
//ptrace(PTRACE_SETOPTIONS, pid, 0, (void *)(PTRACE_O_TRACECLONE|PTRACE_O_TRACEFORK|PTRACE_O_TRACEVFORK|PTRACE_O_TRACEEXEC) );
log_fd = fopen(output_file_name, "wb");
//-------------------------------------------------- LibraryMapAddr
if ( precond ) {
check_func_addr[0] = getLibFuncAddr(pid, "/system/lib/libc.so", "__open");
check_func_addr[1] = getLibFuncAddr(pid, "/system/lib/libc.so", "__pthread_clone");
check_func_instr[0].instrs = ptrace(PTRACE_PEEKDATA, pid, (void *)check_func_addr[0], NULL);
check_func_instr[1].instrs = ptrace(PTRACE_PEEKDATA, pid, (void *)check_func_addr[0] + 4, NULL);
fprintf(stdout, "# Find it! __Open Func : %.8lX\n", check_func_addr[0]);
fprintf(stdout, "# Find it! __pthread_clone Func : %.8lX\n\n", check_func_addr[1]);
fprintf(stdout, " @ [__open] ins : e1a0c007 : %.8lx\n", check_func_instr[0].instrs);
fprintf(stdout, " @ [__open + 4] ins : e3a07005 : %.8lx\n\n", check_func_instr[1].instrs);
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "# Find it! __Open Func : %.8lX\n", check_func_addr[0]);
fprintf(stderr, "# Find it! __pthread_clone Func : %.8lX\n\n", check_func_addr[1]);
fprintf(stderr, " @ [__open] ins : e1a0c007 : %.8lx\n", check_func_instr[0].instrs);
fprintf(stderr, " @ [__open + 4] ins : e3a07005 : %.8lx\n\n", check_func_instr[1].instrs);
}
sprintf(keyword, "libc.so");
memsize = getMapsAddr(pid, keyword, map_addr);
sprintf(mapinfo_libc, "[%s] Memory : %lX - %lX\n", keyword, map_addr[asdf].map_start_addr, map_addr[asdf].map_end_addr);
fprintf(stdout, "%s\n", mapinfo_libc);
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "%s\n", mapinfo_libc);
}
sprintf(keyword, "libpolarisoffice6.so");
memsize = getMapsAddr(pid, keyword, map_addr);
sprintf(mapinfo_libtarget, "[%s] Memory : %lX - %lX\n", keyword, map_addr[asdf].map_start_addr, map_addr[asdf].map_end_addr);
/*
fprintf(stdout, "%s\n", mapinfo_libtarget);
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "%s\n", mapinfo_libtarget);
}
*/
attach_thread(bkup_pid);
}
//-----------------------------------------------------------------
while( 1 ) {
// program exit condition
if ( order == 1 || pid_wait == -1 ) {
break;
}
//-------------------------------------------- Check PRE-CONDITION
if ( precond ) {
// 1. Set Breakpoint __open
next_pc = check_func_addr[0];
if ( -1 == ptrace(PTRACE_POKEDATA, pid, (void *)next_pc, (void *)arm_breakpoint) ) {
perror("[PRE-BreakSet 0] ");
fprintf(stderr, "\t-(%d) State : %c\n", pid, thread_state(pid));
}
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "#---------------------------------------------------#\n");
fprintf(stderr, " @ (%.2d) Break [Func]!!!\n", open_cnt );
fprintf(stderr, " @ [Func] ins : e1a0c007 : %.8lx\n", check_func_instr[0].instrs);
}
// 2. All Thread Continue
thread_cont(0, 0);
/*
while ( precond ) {
pid_wait = waitpid( -1, &status, __WALL );
char t_state = thread_state(pid_wait);
if (ptrace(PTRACE_GETREGS, pid_wait, 0, ®s) != 0) {
perror("[PRECOND] ptrace_getregs");
}
if ( regs.ARM_pc == next_pc ) {
// 11. Arg R0 Check
memset( arg_str, 0x00, 128 );
for ( cnt = 0 ; cnt < 120 ; cnt = cnt + 4 ) {
arg_temp = ptrace(PTRACE_PEEKDATA, pid_wait, (void *)(regs.ARM_r0+cnt), NULL);
strncpy( arg_str+cnt, (unsigned char *)&arg_temp, 4 );
}
fprintf(stdout, " @ r0(%.8lx) : %s\n", regs.ARM_r0, arg_str);
fprintf(stdout, "\t - r1(%.8lx) : %d\n", regs.ARM_r1, regs.ARM_r1);
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, " @ r0(%.8lx) : %s\n", regs.ARM_r0, arg_str);
//fprintf(stderr, "\t @ r1(%.8lx)\n", regs.ARM_r1);
}
// 12. Target Input File Check
if ( (regs.ARM_r1 == 0x20000) && (strstr(arg_str, target_str) != NULL) ) {
precond = 0;
pid = pid_wait;
// Target File Descriptor
check_func_addr[2] = getLibFuncAddr(pid_wait, "/system/lib/libc.so", "fread");
check_func_addr[2] = UNMAKE_THUMB_ADDR(check_func_addr[2]);
check_func_addr[3] = getLibFuncAddr(pid_wait, "/system/lib/libc.so", "read");
check_func_addr[3] = UNMAKE_THUMB_ADDR(check_func_addr[3]);
check_func_addr[4] = getLibFuncAddr(pid_wait, "/system/lib/libc.so", "memcpy");
check_func_addr[4] = UNMAKE_THUMB_ADDR(check_func_addr[4]);
if ( -1 == ptrace(PTRACE_POKEDATA, pid_wait, (void *)next_pc, (void *)check_func_instr[0].instrs) ) {
perror("[PRE-Restore Open_0] ");
fprintf(stderr, "\t-(%d) State : %c\n", pid_wait, thread_state(pid_wait));
}
}
}
else {
thread_pass(bkup_pid, pid_wait, &next_pc, &check_func_instr[0]);
}
}
*/
// 3. Wait
pid_wait = waitProcess(18, &pid, &status, &next_pc, &check_func_instr[0]);
/*
while ( 1 ) {
char temp_state = 'X';
cnt = 0;
while ( 1 ) {
if ( cnt == thread_list_cnt ) {
cnt = 0;
}
temp_state = thread_state(attach_thread_list[cnt++]);
if ( temp_state == 't' ) {
pid = attach_thread_list[cnt-1];
break;
}
}
if (ptrace(PTRACE_GETREGS, pid, 0, ®s) != 0) {
perror("[PRECOND] ptrace_getregs");
}
if ( regs.ARM_pc == next_pc ) {
pid = pid_wait;
break;
}
thread_cont(pid_wait, 0);
}
for ( cnt = 0 ; cnt < thread_list_cnt ; cnt++ ) {
fprintf(stderr, "\t[%d] State : %c\n", attach_thread_list[cnt], thread_state(attach_thread_list[cnt]));
}
*/
// 4. All Thread Stop
thread_stop(0, pid_wait);
//thread_stop(pid_wait, 0);
// 5. Restore __open
if ( -1 == ptrace(PTRACE_POKEDATA, pid_wait, (void *)next_pc, (void *)check_func_instr[0].instrs) ) {
perror("[PRE-Restore Open_0] ");
fprintf(stderr, "\t-(%d) State : %c\n", pid_wait, thread_state(pid_wait));
}
// 6. Set Breakpoint __opne + 4
next_pc = check_func_addr[0] + 4;
if ( -1 == ptrace(PTRACE_POKEDATA, pid_wait, (void *)next_pc, (void *)arm_breakpoint) ) {
perror("[PRE-BreakSet 1] ");
fprintf(stderr, "\t-(%d) State : %c\n", pid_wait, thread_state(pid_wait));
}
// 7. pid_wait Thread Continue
thread_cont(pid_wait, 0);
// 8. Wait
pid_wait = waitpid( pid_wait, &status, __WALL );
//pid_wait = waitProcess(19, &pid, &status, &next_pc, &check_func_instr[1]);
// 9. Restore __open + 4
if ( -1 == ptrace(PTRACE_POKEDATA, pid_wait, (void *)next_pc, (void *)check_func_instr[1].instrs) ) {
perror("[PRE-Restore Open_1] ");
fprintf(stderr, "\t-(%d) State : %c\n", pid_wait, thread_state(pid_wait));
}
// 10. Get Register infomation of pid Thread
if (ptrace(PTRACE_GETREGS, pid_wait, 0, ®s) != 0) {
perror("[FuncCheck] ptrace_getregs");
fprintf(stderr, "\t-(%d) State : %c\n", pid_wait, thread_state(pid_wait));
}
// 11. Arg R0 Check
memset( arg_str, 0x00, 128 );
for ( cnt = 0 ; cnt < 120 ; cnt = cnt + 4 ) {
arg_temp = ptrace(PTRACE_PEEKDATA, pid_wait, (void *)(regs.ARM_r0+cnt), NULL);
strncpy( arg_str+cnt, (unsigned char *)&arg_temp, 4 );
}
fprintf(stdout, " @ r0(%.8lx) : %s\n", regs.ARM_r0, arg_str);
fprintf(stdout, "\t - r1(%.8lx) : %d\n", regs.ARM_r1, regs.ARM_r1);
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, " @ r0(%.8lx) : %s\n", regs.ARM_r0, arg_str);
//fprintf(stderr, "\t @ r1(%.8lx)\n", regs.ARM_r1);
}
// 12. Target Input File Check
if ( (regs.ARM_r1 == 0x20000) && (strstr(arg_str, target_str) != NULL) ) {
precond = 0;
// Target File Descriptor
check_func_addr[2] = getLibFuncAddr(pid, "/system/lib/libc.so", "fread");
check_func_addr[2] = UNMAKE_THUMB_ADDR(check_func_addr[2]);
check_func_addr[3] = getLibFuncAddr(pid, "/system/lib/libc.so", "read");
check_func_addr[3] = UNMAKE_THUMB_ADDR(check_func_addr[3]);
check_func_addr[4] = getLibFuncAddr(pid, "/system/lib/libc.so", "memcpy");
check_func_addr[4] = UNMAKE_THUMB_ADDR(check_func_addr[4]);
thread_cont(0, pid);
}
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "#---------------------------------------------------#\n");
}
continue;
}
//-----------------------------------------------------------------
//---------------------------------------------------- Logging Start
memset(log_entry.Str, 0x00, 160);
counter++;
log_entry.Members.Count = counter;
if ( counter == 1 ) {
char map_order[256];
snprintf(map_order, sizeof(map_order), "cat /proc/%d/maps > maps.log", pid);
system(map_order);
time(&t_start);
fprintf(stdout, "- * - * - * - * - * - LOGGING START - * - * - * - * - * -\n");
}
if ( counter % 10000 == 0 ) {
fprintf(stdout, "Number of machine instructions : %d\n", counter);
}
//--------------------------------------- Get Current PC & Register
//while ( ptrace(PTRACE_GETREGS, pid, 0, ®s) != 0 );
if ( ptrace(PTRACE_GETREGS, pid, 0, ®s) != 0 ) {
fprintf(stderr, "[Error] Get Current PC & Register\n");
}
curr_pc = regs.ARM_pc;
curr_ins.instrs = ptrace(PTRACE_PEEKDATA, pid, (void *)curr_pc, NULL);
//-----------------------------------------------------------------
mode = regs.ARM_cpsr&( (FLAG_N|FLAG_Z|FLAG_C|FLAG_V) |CPSR_T);
log_entry.Members.BitMask = mode;
mode = mode&CPSR_T;
if ( mode == CPSR_T ) {
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "\n#[THUMB] %10d / PID = %5d / CPSR = %.8lX", counter, pid, regs.ARM_cpsr);
}
inst1 = 0;
memcpy(&inst1, &curr_ins.instrs, 2);
instr_len = thumb_insn_size (inst1);
log_entry.Members.Address = MAKE_THUMB_ADDR(curr_pc);
if ( instr_len == 2 ) {
log_entry.Members.Opcode = inst1;
}
else {
log_entry.Members.Opcode = curr_ins.instrs;
}
}
else {
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "\n#[ARM] %10d / PID = %5d / CPSR = %.8lX", counter, pid, regs.ARM_cpsr);
}
instr_len = 4;
log_entry.Members.Address = curr_pc;
log_entry.Members.Opcode = curr_ins.instrs;
}
if ( DEBUG_MSG_PRINT > 0 ) {
if ( WSTOPSIG(status) != SIGILL && WSTOPSIG(status) != SIGTRAP ) {
fprintf(stderr, " / signal = %u, %x", status, status);
}
}
//-----------------------------------------------------------------
//-------------------------------------------------- Get Next PC
// Thumb state
if ( mode == CPSR_T ) {
next_pc = thumb_get_next_pc(pid, curr_pc, ®s, &thumb_code_pass);
thumb_pass_pc = thumb_pass_pc + thumb_code_pass;
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, " / Code Pass = %d\n", thumb_code_pass);
}
}
// ARM state
else {
next_pc = arm_get_next_pc(pid, curr_pc, ®s, &arm_code_pass);
arm_pass_pc = arm_pass_pc + arm_code_pass;
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, " / Code Pass = %d\n", arm_code_pass);
}
}
if ( strex_check == 1 ) {
arm_code_pass = 0;
thumb_code_pass = 0;
}
// Get Instruction of Next PC
next_ins.instrs = ptrace(PTRACE_PEEKDATA, pid, (void *)UNMAKE_THUMB_ADDR(next_pc), NULL);
//--------------------------------------------------------------
//-------------------------------------------------- Check SWI Arg
// Check SVC
if ( (mode != CPSR_T) && (curr_ins.instrs == 0xef000000) ) {
// open
if ( regs.ARM_r7 == 5 ) {
for ( cnt = 0 ; cnt < 120 ; cnt = cnt + 4 ) {
swi_temp = ptrace(PTRACE_PEEKDATA, pid, (void *)(regs.ARM_r0+cnt), NULL);
strncpy( swi_str+cnt, (unsigned char *)&swi_temp, 4 );
}
fprintf(stdout, "(%8d)-[SWI]\t%s : %s\n", counter, svc_call_name[regs.ARM_r7], swi_str);
if ( NULL != strstr(swi_str, target_str) ) {
open_ret_addr = UNMAKE_THUMB_ADDR(regs.ARM_lr);
}
memset( swi_str, 0x00, 128 );
}
// read
else if ( regs.ARM_r7 == 3 ) {
fprintf(stdout, "(%8d)-[SWI]\t%s\n", counter, svc_call_name[regs.ARM_r7]);
}
// lseek
else if ( regs.ARM_r7 == 19 ) {
fprintf(stdout, "(%8d)-[SWI]\t%s\n", counter, svc_call_name[regs.ARM_r7]);
// off_t lseek(int fildes, off_t offset, int whence);
if ( target_fd_num == regs.ARM_r0 ) {
file_base_offset = regs.ARM_r1;
}
}
// nanosleep
else if ( regs.ARM_r7 == 162 ) {
fprintf(stdout, "(%8d)-[SWI]\t%s\n", counter, svc_call_name[regs.ARM_r7]);
//thread_cont(0, pid);
}
// futex
else if ( regs.ARM_r7 == 240 ) {
fprintf(stdout, "(%8d)-[SWI]\t%s\n", counter, svc_call_name[regs.ARM_r7]);
}
else if ( regs.ARM_r7 < 370 ) {
fprintf(stdout, "(%8d)-[SWI]\t%s\n", counter, svc_call_name[regs.ARM_r7]);
}
else {
fprintf(stdout, "(%8d)-[SWI]\t0x%.8X(%d)\n", counter, regs.ARM_r7, regs.ARM_r7);
}
}
// Check Open, File Descriptor
if ( curr_pc == open_ret_addr ) {
/*
fprintf(stderr, "\t\t[Open RET Check]\n");
fprintf(stderr, "\t\tr00=0x%.8X r01=0x%.8X r02=0x%.8X r03=0x%.8X\n",
regs.ARM_r0, regs.ARM_r1, regs.ARM_r2, regs.ARM_r3);
fprintf(stderr, "\t\tr04=0x%.8X r05=0x%.8X r06=0x%.8X r07=0x%.8X\n",
regs.ARM_r4, regs.ARM_r5, regs.ARM_r6, regs.ARM_r7);
fprintf(stderr, "\t\tr08=0x%.8X r09=0x%.8X r10=0x%.8X r11=0x%.8X\n",
regs.ARM_r8, regs.ARM_r9, regs.ARM_r10, regs.ARM_r11);
fprintf(stderr, "\t\tr12=0x%.8X sp=0x%.8X lr=0x%.8X pc=0x%.8X\n",
regs.ARM_r12, regs.ARM_sp, regs.ARM_lr, regs.ARM_pc);
fprintf(stderr, "\t\tcpsr=0x%.8X\n", regs.ARM_cpsr);
*/
target_fd_num = regs.ARM_r0;
target_fd_addr = regs.ARM_r4;
target_monitor = 1;
}
// size_t fread ( void * ptr, size_t size, size_t count, FILE * stream );
if ( curr_pc == check_func_addr[2] && target_fd_addr == regs.ARM_r3 && target_monitor == 1 ) {
/*
fprintf(stdout, "\t[Fread Check]\n");
fprintf(stdout, "\tr00=0x%.8X r01=0x%.8X r02=0x%.8X r03=0x%.8X\n",
regs.ARM_r0, regs.ARM_r1, regs.ARM_r2, regs.ARM_r3);
fprintf(stdout, "\tr04=0x%.8X r05=0x%.8X r06=0x%.8X r07=0x%.8X\n",
regs.ARM_r4, regs.ARM_r5, regs.ARM_r6, regs.ARM_r7);
fprintf(stdout, "\tr08=0x%.8X r09=0x%.8X r10=0x%.8X r11=0x%.8X\n",
regs.ARM_r8, regs.ARM_r9, regs.ARM_r10, regs.ARM_r11);
fprintf(stdout, "\tr12=0x%.8X sp=0x%.8X lr=0x%.8X pc=0x%.8X\n",
regs.ARM_r12, regs.ARM_sp, regs.ARM_lr, regs.ARM_pc);
fprintf(stdout, "\tcpsr=0x%.8X\n", regs.ARM_cpsr);
*/
file_curr_offset = ptrace(PTRACE_PEEKDATA, pid, (void *)(regs.ARM_r3), NULL);
file_start_offset = ptrace(PTRACE_PEEKDATA, pid, (void *)(regs.ARM_r3+16), NULL);
file_offset = file_base_offset + (file_curr_offset - file_start_offset);
/*
fprintf(stdout, "\t[*] FILE ADDR(%.8X) : %.8X, %.8X\n", regs.ARM_r3, file_curr_offset, file_start_offset);
fprintf(stdout, "\t[-] ADDR_DATA :");
for ( cnt = 0 ; cnt < 64 ; cnt = cnt + 4 ) {
if ( (cnt%16) == 0 ) {
fprintf(stdout, "\n\t\t\t\t\t");
}
fprintf(stdout, " %.8X", ptrace(PTRACE_PEEKDATA, pid, (void *)(regs.ARM_r3+cnt), NULL) );
}
fprintf(stdout, "\n");
fprintf(stdout, "\t\t1) %.8X", ptrace(PTRACE_PEEKDATA, pid, (void *)(file_curr_offset), NULL) );
fprintf(stdout, "\t\t2) %.8X\n", ptrace(PTRACE_PEEKDATA, pid, (void *)(file_start_offset), NULL) );
*/
if ( read_start_addr == 0 ) {
read_start_addr = regs.ARM_r0;
read_end_addr = read_start_addr;
}
read_dst_addr = regs.ARM_r0;
fread_ret_addr = UNMAKE_THUMB_ADDR(regs.ARM_lr);
target_monitor = 2;
}
else if ( curr_pc == fread_ret_addr && target_monitor == 2 ) {
read_size = read_size + regs.ARM_r0;
read_end_addr = read_end_addr + regs.ARM_r0 - 1;
fprintf(stdout, "\t[#] READ_ADDR : %.8X - %.8X / READ_SIZE : %d(%d)\n", read_dst_addr, read_dst_addr+regs.ARM_r0-1, regs.ARM_r0, read_size);
log_entry.Members.BitMask = log_entry.Members.BitMask | 0x01000000;
log_entry.Members.Operands[13] = file_offset;
log_entry.Members.Operands[14] = read_dst_addr;
log_entry.Members.Operands[15] = read_dst_addr+regs.ARM_r0-1;
fprintf(stdout, "\t[-] READ_DATA : (%.8X)", file_offset);
if ( regs.ARM_r0 < 20 ) {
for ( cnt = 0 ; cnt < regs.ARM_r0 ; cnt = cnt + 4 ) {
fprintf(stdout, " %.8X", ptrace(PTRACE_PEEKDATA, pid, (void *)(read_dst_addr+cnt), NULL) );
}
}
else {
for ( cnt = 0 ; cnt < 20 ; cnt = cnt + 4 ) {
fprintf(stdout, " %.8X", ptrace(PTRACE_PEEKDATA, pid, (void *)(read_dst_addr+cnt), NULL) );
}
}
fprintf(stdout, "\n\n");
target_monitor = 1;
}
/*
// ssize_t read (int fd, void *buf, size_t nbytes)
else if ( curr_pc == check_func_addr[3] && target_monitor >= 1 ) {
fprintf(stderr, "\t[Read Check]\n");
fprintf(stderr, "\tr00=0x%.8X r01=0x%.8X r02=0x%.8X r03=0x%.8X\n",
regs.ARM_r0, regs.ARM_r1, regs.ARM_r2, regs.ARM_r3);
fprintf(stderr, "\tr04=0x%.8X r05=0x%.8X r06=0x%.8X r07=0x%.8X\n",
regs.ARM_r4, regs.ARM_r5, regs.ARM_r6, regs.ARM_r7);
fprintf(stderr, "\tr08=0x%.8X r09=0x%.8X r10=0x%.8X r11=0x%.8X\n",
regs.ARM_r8, regs.ARM_r9, regs.ARM_r10, regs.ARM_r11);
fprintf(stderr, "\tr12=0x%.8X sp=0x%.8X lr=0x%.8X pc=0x%.8X\n",
regs.ARM_r12, regs.ARM_sp, regs.ARM_lr, regs.ARM_pc);
fprintf(stderr, "\tcpsr=0x%.8X\n", regs.ARM_cpsr);
}
*/
//-----------------------------------------------------------------
//--------------------------------------------- LDREX,STREX Handler
if ( strex_check == 1 ) {
strex_check = strexHandler( &mode, &pid, &curr_pc, &next_pc, &curr_ins, &bkup_ins, ®s );
if ( strex_check == 0 ) {
strex_count++;
ptrace(PTRACE_CONT, pid, 0, 0);
pid_wait = waitpid( pid, &status, __WALL );
//pid_wait = waitProcess(9, &pid, &status, &next_pc, &bkup_ins);
ptrace(PTRACE_POKEDATA, pid, (void *)next_pc, (void *)bkup_ins.instrs);
arm_code_pass = 0;
thumb_code_pass = 0;
if ( counter > skip ) {
fwrite(log_entry.Str, 1, sizeof(log_entry.Str), log_fd);
}
continue;
}
} // if ( strex_check == 1 ) end
//--------------------------------------------------------------
//--------------------------------------------- ALL Threads Stop
//thread_stop(0, 0);
//--------------------------------------------------------------
//---------------------------------------------------- Set Break
// Set Breakpoint at the Next PC
bkup_ins.instrs = ptrace(PTRACE_PEEKDATA, pid, (void *)next_pc, NULL);
long setbreak_ret;
// if Next PC is ThumbState Address
if ( IS_THUMB_ADDR(next_pc) == 1 ) {
setbreak_ret = ptrace(PTRACE_POKEDATA, pid, (void *)next_pc, (void *)((bkup_ins.instrs&0xFFFF0000)|thumb_breakpoint));
}
else {
setbreak_ret = ptrace(PTRACE_POKEDATA, pid, (void *)next_pc, (void *)arm_breakpoint);
}
// Check break-set
if ( setbreak_ret == -1 ) {
fprintf(stderr, "\n\t[Break Point ISSUE]\n", curr_pc);
// Print the Current PC
fprintf(stderr, "\tCURRENT : 0x%.8lX\t", curr_pc);
for ( cnt = 0 ; cnt < instr_len ; cnt++ ) {
fprintf(stderr, "%.2X ", curr_ins.instr[cnt]);
}
simple_disassem( IS_THUMB_ADDR(curr_pc), ®s, curr_ins.instrs );
if ( mode == CPSR_T ) {
unsigned short instr1;
memcpy(&instr1, &next_ins.instrs, 2);
next_pc = curr_pc + thumb_insn_size(instr1);
next_pc = MAKE_THUMB_ADDR(next_pc);
}
else {
next_pc = curr_pc + 4;
}
next_ins.instrs = ptrace(PTRACE_PEEKDATA, pid, (void *)UNMAKE_THUMB_ADDR(next_pc), NULL);
bkup_ins.instrs = ptrace(PTRACE_PEEKDATA, pid, (void *)next_pc, NULL);
int temp_len;
// Thumb state
if ( IS_THUMB_ADDR(next_pc) == 1 ) {
unsigned short instr1;
memcpy(&instr1, &next_ins.instrs, 2);
temp_len = thumb_insn_size(instr1);
setbreak_ret = ptrace(PTRACE_POKEDATA, pid, (void *)next_pc, (void *)((bkup_ins.instrs&0xFFFF0000)|thumb_breakpoint));
}
else {
temp_len = 4;
setbreak_ret = ptrace(PTRACE_POKEDATA, pid, (void *)next_pc, (void *)arm_breakpoint);
}
// Print the Next PC
fprintf(stderr, "\tNEXT(%d) : 0x%.8lX\t", temp_len, next_pc);
for ( cnt = 0 ; cnt < temp_len ; cnt++ ) {
fprintf(stderr, "%.2X ", next_ins.instr[cnt]);
}
simple_disassem( IS_THUMB_ADDR(next_pc), ®s, next_ins.instrs );
fprintf(stderr, "\n");
}
/*
if ( DEBUG_MSG_PRINT > 0 ) {
switch( setbreak_ret ) {
case EBUSY: fprintf(stderr, "\t[ERROR] Set Break(%X) - EBUSY\n", setbreak_ret); break;
case EFAULT: fprintf(stderr, "\t[ERROR] Set Break(%X) - EFAULT\n", setbreak_ret); break;
case EINVAL: fprintf(stderr, "\t[ERROR] Set Break(%X) - EINVAL\n", setbreak_ret); break;
case EIO: fprintf(stderr, "\t[ERROR] Set Break(%X) - EIO\n", setbreak_ret); break;
case EPERM: fprintf(stderr, "\t[ERROR] Set Break(%X) - EPERM\n", setbreak_ret); break;
case ESRCH: fprintf(stderr, "\t[ERROR] Set Break(%X) - ESRCH\n", setbreak_ret); break;
default: fprintf(stderr, "\t[NORMAL] Set Break(%X)\n", setbreak_ret); break;
}
}
*/
//--------------------------------------------------------------
//--------------------------------------------- LDREX,STREX Handler
strex_check = strexHandler_check( &mode, &curr_ins, strex_check );
//--------------------------------------------------------------
//------------ Show disassembly of the current PC and the instruction
if ( DEBUG_MSG_PRINT == 1 ) {
fprintf(stderr, "\t\tr00=0x%.8X r01=0x%.8X r02=0x%.8X r03=0x%.8X\n",
regs.ARM_r0, regs.ARM_r1, regs.ARM_r2, regs.ARM_r3);
fprintf(stderr, "\t\tr04=0x%.8X r05=0x%.8X r06=0x%.8X r07=0x%.8X\n",
regs.ARM_r4, regs.ARM_r5, regs.ARM_r6, regs.ARM_r7);
fprintf(stderr, "\t\tr08=0x%.8X r09=0x%.8X r10=0x%.8X r11=0x%.8X\n",
regs.ARM_r8, regs.ARM_r9, regs.ARM_r10, regs.ARM_r11);
fprintf(stderr, "\t\tr12=0x%.8X sp=0x%.8X lr=0x%.8X pc=0x%.8X\n",
regs.ARM_r12, regs.ARM_sp, regs.ARM_lr, regs.ARM_pc);
fprintf(stderr, "\t\tcpsr=0x%.8X\n", regs.ARM_cpsr);
}
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "\tCURRENT : 0x%.8lX\t", curr_pc);
for ( cnt = 0 ; cnt < instr_len ; cnt++ ) {
fprintf(stderr, "%.2X ", curr_ins.instr[cnt]);
}
}
/*
while ( ptrace(PTRACE_GETREGS, pid, 0, ®s) != 0 );
if ( ptrace(PTRACE_GETREGS, pid, 0, ®s) != 0 ) {
fprintf(stdout, "WTF !!!");
fprintf(stderr, "WTF !!!");
}
*/
//--------------------------------------------------------------
//------------------------------------------------------ Logging
disassem( &mode, instr_len, &curr_ins, ®s );
log_entry.Members.Operands[12] = regs.ARM_sp;
if ( arm_code_pass == 1 ) {
counter--;
}
else {
if ( counter > skip ) {
fwrite(log_entry.Str, 1, sizeof(log_entry.Str), log_fd);
}
}
//--------------------------------------------------------------
//---------------- Print the Next PC and the instruction of PC(just 4 byte)
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "\tNEXT(4) : 0x%.8lX\t", UNMAKE_THUMB_ADDR(next_pc));
for ( cnt = 0 ; cnt <= 3 ; cnt++ ) {
fprintf(stderr, "%.2X ", next_ins.instr[cnt]);
}
fprintf(stderr, "\n");
}
//--------------------------------------------------------------
//--------------------------------------- Continue Target Thread
//thread_cont(pid, 0);
thread_cont(0, 0);
//--------------------------------------------------------------
//-------------------------------------------------- Wait Signal
pid_wait = waitProcess(9, &pid, &status, &next_pc, &bkup_ins);
//--------------------------------------------------------------
//------------------------------------------ Stop Target Process
//thread_stop(0, 0);
//--------------------------------------------------------------
//------------------------------------- Restore Next Instruction
if ( -1 == ptrace(PTRACE_POKEDATA, pid, (void *)next_pc, (void *)bkup_ins.instrs) ) {
perror("[Target_Restore] ");
}
//--------------------------------------------------------------
arm_code_pass = 0;
thumb_code_pass = 0;
} // END while( 1 )
time(&t_end);
t_time = difftime(t_end, t_start);
fprintf(stdout, "\n- * - * - * - * - * - LOGGING FINISH - * - * - * - * - * -\n");
fprintf(stdout, "\nFINAL status : %x\n", status);
fprintf(stdout, "\nTotal Time :\t%lf\n", t_time);
fprintf(stdout, "Total Instructions :\t\t\t%d\n", counter);
fprintf(stdout, "Total Pass Instruction :\t\t%d = %d(ARM) + %d(Thumb)\n", arm_pass_pc + thumb_pass_pc, arm_pass_pc, thumb_pass_pc);
fprintf(stdout, "# of Instruction excuted :\t\t%lf\n", counter/t_time);
fprintf(stdout, "# of Lock Handler called :\t\t%d\n", strex_count);
fprintf(stdout, "\nInput Data File : %s\n", arg_str);
fprintf(stdout, "Input Data Size : %d\n", read_size);
fprintf(stdout, "Input Data Memory : %lX - %lX\n", read_start_addr, read_end_addr);
fprintf(stdout, "Process PID, Target TID :\t%d, %d\n", bkup_pid, pid);
//fprintf(stdout, "\n%s\n", mapinfo_libc);
//fprintf(stdout, "%s\n", mapinfo_libtarget);
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "\nFINAL status : %x\n", status);
fprintf(stderr, "\nTotal Time :\t%lf\n", t_time);
fprintf(stderr, "Total Instructions :\t\t\t%d\n", counter);
fprintf(stdout, "Total Pass Instruction :\t\t%d = %d(ARM) + %d(Thumb)\n", arm_pass_pc + thumb_pass_pc, arm_pass_pc, thumb_pass_pc);
fprintf(stderr, "# of Instruction excuted :\t\t%lf\n", counter/t_time);
fprintf(stderr, "# of Lock Handler called :\t\t%d\n", strex_count);
fprintf(stderr, "\nInput Data File : %s\n", arg_str);
fprintf(stderr, "Input Data Size : %d\n", read_size);
fprintf(stderr, "Input Data Memory : %lX - %lX\n", read_start_addr, read_end_addr);
fprintf(stderr, "Process PID, Target TID :\t%d, %d\n", bkup_pid, pid);
//fprintf(stderr, "\n%s\n", mapinfo_libc);
//fprintf(stderr, "%s\n", mapinfo_libtarget);
}
fclose(log_fd);
if ( -1 == ptrace(PTRACE_KILL, pid, NULL, NULL) ) {
perror("\t[EXIT] Detach Fail ");
}
pthread_kill( thread, SIGKILL );
pthread_join( thread, (void **)&status );
return 0;
}
// Wait for user input for program exit
void * inputCommand(void * order)
{
char szCmd[32];
while( *((int *)order) == 0 )
{
scanf("%s", szCmd);
if(!strcmp("q", szCmd) || !strcmp("quit", szCmd) || !strcmp("Q", szCmd) || !strcmp("Quit", szCmd))
{
*((int *)order) = 1;
}
}
pthread_exit(0);
}
// Look like waitpid (Status Check added)
pid_t waitProcess(int no, pid_t * pid, int * stat, unsigned long * next_pc, Instruction * bkup_ins)
{
int ret, cnt, instr_len;
int wait_opt = WNOHANG|__WALL;
//int wait_opt = __WALL;
unsigned long crash_pc, mode;
arm_regs regs;
Instruction crash_ins;
pid_t pid_wait, tid;
while ( 1 ) {
pid_wait = waitpid( -1, stat, wait_opt );
if ( pid_wait == -1 )
{
perror("waitpid");
return -1;
}
// Nobody gets signal
else if ( pid_wait == 0 ) {
if ( no == 9 ) {
thread_cont(0, *pid);
if ( thread_state(*pid) == 't' || thread_state(*pid) == 'T' ) {
return *pid;
}
}
continue;
}
// pid_wait == pid
else if ( pid_wait == *pid )
{
// CRASH !!!
if( WSTOPSIG(*stat) == SIGFPE || WSTOPSIG(*stat) == SIGSEGV ) {
ret = ptrace(PTRACE_GETEVENTMSG, pid_wait, NULL, (void *)&tid);
fprintf(stdout, "\n<%d> --- [%d / %x(%d)] IS THIS CRASH ?\n\t(%d) : \"%s\" ---\n", no, pid_wait, *stat, *stat, tid, signal_name[WSTOPSIG(*stat)]);
if ( DEBUG_MSG_PRINT > 0 ) {
fprintf(stderr, "\n<%d> --- [%d / %x(%d)] IS THIS CRASH ?\n\t(%d) : \"%s\" ---\n", no, pid_wait, *stat, *stat, tid, signal_name[WSTOPSIG(*stat)]);
}
if (ptrace(PTRACE_GETREGS, pid_wait, 0, ®s) != 0) {
perror("[CRASH] ptrace_getregs");
}
counter++;
log_entry.Members.Count = counter;
crash_pc = regs.ARM_pc;
crash_ins.instrs = ptrace(PTRACE_PEEKDATA, pid_wait, (void *)crash_pc, NULL);
mode = regs.ARM_cpsr&CPSR_T;
log_entry.Members.BitMask = regs.ARM_cpsr&( (FLAG_N|FLAG_Z|FLAG_C|FLAG_V) |CPSR_T);
// Thumb state
if ( mode == CPSR_T ) {
unsigned short inst1;
memcpy(&inst1, &crash_ins.instrs, 2);
instr_len = thumb_insn_size (inst1);
log_entry.Members.Address = MAKE_THUMB_ADDR(crash_pc);
if ( instr_len == 2 ) {
log_entry.Members.Opcode = inst1;
}
else {
log_entry.Members.Opcode = crash_ins.instrs;
}
}
// ARM state
else {