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