47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
#include <unicorn/unicorn.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#define UC_BUG_WRITE_SIZE 128
|
|
#define UC_BUG_WRITE_ADDR 0x1000 // fix this by change this to 0x2000
|
|
|
|
int got_sigill = 0;
|
|
|
|
void _interrupt(ucengine *uc, uint32_t intno, void *user_data)
|
|
{
|
|
if (intno == 6) {
|
|
uc_emu_stop(uc);
|
|
got_sigill = 1;
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
int size;
|
|
uint8_t *buf;
|
|
ucengine *uc;
|
|
uchook uh_trap;
|
|
uc_err err = uc_open (UC_ARCH_X86, UC_MODE_64, &uc);
|
|
if (err) {
|
|
fprintf (stderr, "Cannot initialize unicorn\n");
|
|
return 1;
|
|
}
|
|
size = UC_BUG_WRITE_SIZE;
|
|
buf = malloc (size);
|
|
if (!buf) {
|
|
fprintf (stderr, "Cannot allocate\n");
|
|
return 1;
|
|
}
|
|
memset (buf, 0, size);
|
|
if (!uc_mem_map(uc, UC_BUG_WRITE_ADDR, size, UC_PROT_ALL)) {
|
|
uc_mem_write(uc, UC_BUG_WRITE_ADDR,
|
|
(const uint8_t*)"\xff\xff\xff\xff\xff\xff\xff\xff", 8);
|
|
}
|
|
uc_hook_add(uc, &uh_trap, UC_HOOK_INTR, _interrupt, NULL);
|
|
uc_emu_start(uc, UC_BUG_WRITE_ADDR, UC_BUG_WRITE_ADDR+8, 0, 1);
|
|
uc_close(uc);
|
|
printf ("Correct: %s\n", got_sigill? "YES": "NO");
|
|
return got_sigill? 0: 1;
|
|
}
|