86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
#include <sys/types.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <unicorn/unicorn.h>
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static int count = 1;
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// Callback function for tracing code (UC_HOOK_CODE & UC_HOOK_BLOCK)
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// @address: address where the code is being executed
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// @size: size of machine instruction being executed
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// @user_data: user data passed to tracing APIs.
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void cb_hookblock(uc_engine *uc, uint64_t address, uint32_t size, void *user_data) {
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fprintf(stderr, "# >>> Tracing basic block at 0x%"PRIx64", block size = 0x%x\n", address, size);
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if (address != 0x1000000 && address != 0x1000200) {
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fprintf(stderr, "not ok %d - address != 0x1000000 && address != 0x1000200\n", count++);
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_exit(1);
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}
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fprintf(stderr, "ok %d - address (0x%x) is start of basic block\n", count++, (uint32_t)address);
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if (size != 0x200) {
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fprintf(stderr, "not ok %d - basic block size != 0x200\n", count++);
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_exit(1);
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}
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fprintf(stderr, "ok %d - basic block size is correct\n", count++);
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}
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int main() {
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uc_engine *uc;
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fprintf(stderr, "# basic block callback test\n");
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fprintf(stderr, "# there are only two basic blocks 0x1000000-0x10001ff and 0x1000200-0x10003ff\n");
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uc_err err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
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if (err != UC_ERR_OK) {
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fprintf(stderr, "not ok %d - %s\n", count++, uc_strerror(err));
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exit(0);
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}
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fprintf(stderr, "ok %d - uc_open\n", count++);
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err = uc_mem_map(uc, 0x1000000, 4096, UC_PROT_ALL);
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if (err != UC_ERR_OK) {
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fprintf(stderr, "not ok %d - %s\n", count++, uc_strerror(err));
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exit(0);
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}
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fprintf(stderr, "ok %d - uc_mem_map\n", count++);
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uint8_t code[1024];
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//build a program that consists of 1019 nops followed by a jump -512
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//this program contains exactly 2 basic blocks, a block of 512 nops, followed
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//by a loop body containing 507 nops and jump to the top of the loop
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//the first basic block begins at address 0x1000000, and the second
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//basic block begins at address 0x1000200
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memset(code, 0x90, sizeof(code));
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memcpy(code + 1024 - 5, "\xe9\x00\xfe\xff\xff", 5);
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err = uc_mem_write(uc, 0x1000000, code, sizeof(code));
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if (err != UC_ERR_OK) {
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fprintf(stderr, "not ok %d - %s\n", count++, uc_strerror(err));
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exit(0);
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}
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fprintf(stderr, "ok %d - uc_mem_write\n", count++);
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uc_hook h1, h2;
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err = uc_hook_add(uc, &h1, UC_HOOK_BLOCK, cb_hookblock, NULL, 1, 0);
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if (err != UC_ERR_OK) {
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fprintf(stderr, "not ok %d - %s\n", count++, uc_strerror(err));
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exit(0);
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}
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fprintf(stderr, "ok %d - uc_hook_add\n", count++);
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err = uc_emu_start(uc, 0x1000000, 0x1000000 + sizeof(code), 0, 1030);
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if (err != UC_ERR_OK) {
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fprintf(stderr, "not ok %d - %s\n", count++, uc_strerror(err));
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exit(0);
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}
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fprintf(stderr, "ok %d - uc_emu_start\n", count++);
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fprintf(stderr, "ok %d - Done", count++);
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return 0;
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}
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