875 lines
26 KiB
C
875 lines
26 KiB
C
#include "unicorn_test.h"
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const uint64_t code_start = 0x1000;
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const uint64_t code_len = 0x4000;
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static void uc_common_setup(uc_engine **uc, uc_arch arch, uc_mode mode,
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const char *code, uint64_t size)
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{
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OK(uc_open(arch, mode, uc));
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OK(uc_mem_map(*uc, code_start, code_len, UC_PROT_ALL));
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OK(uc_mem_write(*uc, code_start, code, size));
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}
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typedef struct _INSN_IN_RESULT {
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uint32_t port;
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int size;
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} INSN_IN_RESULT;
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static void test_x86_in_callback(uc_engine *uc, uint32_t port, int size,
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void *user_data)
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{
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INSN_IN_RESULT *result = (INSN_IN_RESULT *)user_data;
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result->port = port;
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result->size = size;
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}
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static void test_x86_in()
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{
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uc_engine *uc;
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uc_hook hook;
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char code[] = "\xe5\x10"; // IN eax, 0x10
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INSN_IN_RESULT result;
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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OK(uc_hook_add(uc, &hook, UC_HOOK_INSN, test_x86_in_callback, &result, 1, 0,
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UC_X86_INS_IN));
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OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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TEST_CHECK(result.port == 0x10);
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TEST_CHECK(result.size == 4);
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OK(uc_hook_del(uc, hook));
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OK(uc_close(uc));
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}
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typedef struct _INSN_OUT_RESULT {
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uint32_t port;
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int size;
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uint32_t value;
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} INSN_OUT_RESULT;
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static void test_x86_out_callback(uc_engine *uc, uint32_t port, int size,
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uint32_t value, void *user_data)
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{
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INSN_OUT_RESULT *result = (INSN_OUT_RESULT *)user_data;
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result->port = port;
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result->size = size;
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result->value = value;
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}
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static void test_x86_out()
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{
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uc_engine *uc;
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uc_hook hook;
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char code[] = "\xb0\x32\xe6\x46"; // MOV al, 0x32; OUT 0x46, al;
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INSN_OUT_RESULT result;
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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OK(uc_hook_add(uc, &hook, UC_HOOK_INSN, test_x86_out_callback, &result, 1,
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0, UC_X86_INS_OUT));
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OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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TEST_CHECK(result.port == 0x46);
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TEST_CHECK(result.size == 1);
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TEST_CHECK(result.value == 0x32);
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OK(uc_hook_del(uc, hook));
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OK(uc_close(uc));
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}
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typedef struct _MEM_HOOK_RESULT {
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uc_mem_type type;
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uint64_t address;
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int size;
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uint64_t value;
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} MEM_HOOK_RESULT;
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typedef struct _MEM_HOOK_RESULTS {
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uint64_t count;
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MEM_HOOK_RESULT results[16];
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} MEM_HOOK_RESULTS;
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static bool test_x86_mem_hook_all_callback(uc_engine *uc, uc_mem_type type,
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uint64_t address, int size,
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uint64_t value, void *user_data)
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{
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MEM_HOOK_RESULTS *r = (MEM_HOOK_RESULTS *)user_data;
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uint64_t count = r->count;
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if (count >= 16) {
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TEST_ASSERT(false);
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}
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r->results[count].type = type;
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r->results[count].address = address;
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r->results[count].size = size;
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r->results[count].value = value;
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r->count++;
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if (type == UC_MEM_READ_UNMAPPED) {
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uc_mem_map(uc, address, 0x1000, UC_PROT_ALL);
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}
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return true;
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}
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static void test_x86_mem_hook_all()
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{
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uc_engine *uc;
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uc_hook hook;
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// mov eax, 0xdeadbeef;
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// mov [0x8000], eax;
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// mov eax, [0x10000];
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char code[] =
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"\xb8\xef\xbe\xad\xde\xa3\x00\x80\x00\x00\xa1\x00\x00\x01\x00";
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MEM_HOOK_RESULTS r = {0};
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MEM_HOOK_RESULT expects[3] = {{UC_MEM_WRITE, 0x8000, 4, 0xdeadbeef},
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{UC_MEM_READ_UNMAPPED, 0x10000, 4, 0},
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{UC_MEM_READ, 0x10000, 4, 0}};
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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OK(uc_mem_map(uc, 0x8000, 0x1000, UC_PROT_ALL));
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OK(uc_hook_add(uc, &hook, UC_HOOK_MEM_VALID | UC_HOOK_MEM_INVALID,
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test_x86_mem_hook_all_callback, &r, 1, 0));
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OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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TEST_CHECK(r.count == 3);
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for (int i = 0; i < r.count; i++) {
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TEST_CHECK(expects[i].type == r.results[i].type);
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TEST_CHECK(expects[i].address == r.results[i].address);
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TEST_CHECK(expects[i].size == r.results[i].size);
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TEST_CHECK(expects[i].value == r.results[i].value);
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}
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OK(uc_hook_del(uc, hook));
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OK(uc_close(uc));
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}
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static void test_x86_inc_dec_pxor()
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{
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uc_engine *uc;
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char code[] =
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"\x41\x4a\x66\x0f\xef\xc1"; // INC ecx; DEC edx; PXOR xmm0, xmm1
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int r_ecx = 0x1234;
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int r_edx = 0x7890;
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uint64_t r_xmm0[2] = {0x08090a0b0c0d0e0f, 0x0001020304050607};
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uint64_t r_xmm1[2] = {0x8090a0b0c0d0e0f0, 0x0010203040506070};
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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OK(uc_reg_write(uc, UC_X86_REG_ECX, &r_ecx));
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OK(uc_reg_write(uc, UC_X86_REG_EDX, &r_edx));
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OK(uc_reg_write(uc, UC_X86_REG_XMM0, &r_xmm0));
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OK(uc_reg_write(uc, UC_X86_REG_XMM1, &r_xmm1));
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OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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OK(uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx));
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OK(uc_reg_read(uc, UC_X86_REG_EDX, &r_edx));
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OK(uc_reg_read(uc, UC_X86_REG_XMM0, &r_xmm0));
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TEST_CHECK(r_ecx == 0x1235);
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TEST_CHECK(r_edx == 0x788f);
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TEST_CHECK(r_xmm0[0] == 0x8899aabbccddeeff);
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TEST_CHECK(r_xmm0[1] == 0x0011223344556677);
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OK(uc_close(uc));
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}
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static void test_x86_relative_jump()
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{
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uc_engine *uc;
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char code[] = "\xeb\x02\x90\x90\x90\x90\x90\x90"; // jmp 4; nop; nop; nop;
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// nop; nop; nop
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int r_eip;
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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OK(uc_emu_start(uc, code_start, code_start + 4, 0, 0));
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OK(uc_reg_read(uc, UC_X86_REG_EIP, &r_eip));
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TEST_CHECK(r_eip == code_start + 4);
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OK(uc_close(uc));
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}
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static void test_x86_loop()
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{
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uc_engine *uc;
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char code[] = "\x41\x4a\xeb\xfe"; // inc ecx; dec edx; jmp $;
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int r_ecx = 0x1234;
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int r_edx = 0x7890;
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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OK(uc_reg_write(uc, UC_X86_REG_ECX, &r_ecx));
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OK(uc_reg_write(uc, UC_X86_REG_EDX, &r_edx));
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OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 1 * 1000000,
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0));
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OK(uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx));
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OK(uc_reg_read(uc, UC_X86_REG_EDX, &r_edx));
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TEST_CHECK(r_ecx == 0x1235);
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TEST_CHECK(r_edx == 0x788f);
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OK(uc_close(uc));
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}
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static void test_x86_invalid_mem_read()
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{
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uc_engine *uc;
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char code[] = "\x8b\x0d\xaa\xaa\xaa\xaa"; // mov ecx, [0xAAAAAAAA]
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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uc_assert_err(
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UC_ERR_READ_UNMAPPED,
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uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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OK(uc_close(uc));
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}
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static void test_x86_invalid_mem_write()
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{
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uc_engine *uc;
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char code[] = "\x89\x0d\xaa\xaa\xaa\xaa"; // mov ecx, [0xAAAAAAAA]
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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uc_assert_err(
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UC_ERR_WRITE_UNMAPPED,
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uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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OK(uc_close(uc));
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}
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static void test_x86_invalid_jump()
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{
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uc_engine *uc;
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char code[] = "\xe9\xe9\xee\xee\xee"; // jmp 0xEEEEEEEE
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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uc_assert_err(
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UC_ERR_FETCH_UNMAPPED,
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uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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OK(uc_close(uc));
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}
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static void test_x86_64_syscall_callback(uc_engine *uc, void *user_data)
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{
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uint64_t rax;
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OK(uc_reg_read(uc, UC_X86_REG_RAX, &rax));
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TEST_CHECK(rax == 0x100);
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}
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static void test_x86_64_syscall()
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{
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uc_engine *uc;
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uc_hook hook;
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char code[] = "\x0f\x05"; // syscall
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uint64_t r_rax = 0x100;
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_64, code, sizeof(code) - 1);
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OK(uc_reg_write(uc, UC_X86_REG_RAX, &r_rax));
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OK(uc_hook_add(uc, &hook, UC_HOOK_INSN, test_x86_64_syscall_callback, NULL,
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1, 0, UC_X86_INS_SYSCALL));
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OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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OK(uc_hook_del(uc, hook));
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OK(uc_close(uc));
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}
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static void test_x86_16_add()
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{
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uc_engine *uc;
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char code[] = "\x00\x00"; // add byte ptr [bx + si], al
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uint16_t r_ax = 7;
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uint16_t r_bx = 5;
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uint16_t r_si = 6;
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uint8_t result;
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_16, code, sizeof(code) - 1);
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OK(uc_mem_map(uc, 0, 0x1000, UC_PROT_ALL));
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OK(uc_reg_write(uc, UC_X86_REG_AX, &r_ax));
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OK(uc_reg_write(uc, UC_X86_REG_BX, &r_bx));
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OK(uc_reg_write(uc, UC_X86_REG_SI, &r_si));
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OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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OK(uc_mem_read(uc, r_bx + r_si, &result, 1));
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TEST_CHECK(result == 7);
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OK(uc_close(uc));
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}
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static void test_x86_reg_save()
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{
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uc_engine *uc;
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uc_context *ctx;
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char code[] = "\x40"; // inc eax
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int r_eax = 1;
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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OK(uc_reg_write(uc, UC_X86_REG_EAX, &r_eax));
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OK(uc_context_alloc(uc, &ctx));
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OK(uc_context_save(uc, ctx));
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OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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OK(uc_reg_read(uc, UC_X86_REG_EAX, &r_eax));
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TEST_CHECK(r_eax == 2);
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OK(uc_context_restore(uc, ctx));
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OK(uc_reg_read(uc, UC_X86_REG_EAX, &r_eax));
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TEST_CHECK(r_eax == 1);
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OK(uc_context_free(ctx));
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OK(uc_close(uc));
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}
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static bool
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test_x86_invalid_mem_read_stop_in_cb_callback(uc_engine *uc, uc_mem_type type,
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uint64_t address, int size,
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uint64_t value, void *user_data)
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{
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// False indicates that we fail to handle this ERROR and let the emulation
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// stop.
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//
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// Note that the memory must be mapped properly if we return true! Check
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// test_x86_mem_hook_all for example.
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return false;
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}
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static void test_x86_invalid_mem_read_stop_in_cb()
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{
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uc_engine *uc;
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uc_hook hook;
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char code[] = "\x40\x8b\x1d\x00\x00\x10\x00\x42"; // inc eax; mov ebx,
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// [0x100000]; inc edx
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int r_eax = 0x1234;
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int r_edx = 0x5678;
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int r_eip = 0;
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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OK(uc_hook_add(uc, &hook, UC_HOOK_MEM_READ,
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test_x86_invalid_mem_read_stop_in_cb_callback, NULL, 1, 0));
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OK(uc_reg_write(uc, UC_X86_REG_EAX, &r_eax));
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OK(uc_reg_write(uc, UC_X86_REG_EDX, &r_edx));
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uc_assert_err(
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UC_ERR_READ_UNMAPPED,
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uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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// The state of Unicorn should be correct at this time.
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OK(uc_reg_read(uc, UC_X86_REG_EIP, &r_eip));
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OK(uc_reg_read(uc, UC_X86_REG_EAX, &r_eax));
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OK(uc_reg_read(uc, UC_X86_REG_EDX, &r_edx));
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TEST_CHECK(r_eip == code_start + 1);
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TEST_CHECK(r_eax == 0x1235);
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TEST_CHECK(r_edx == 0x5678);
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OK(uc_close(uc));
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}
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static void test_x86_x87_fnstenv_callback(uc_engine *uc, uint64_t address,
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uint32_t size, void *user_data)
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{
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uint32_t r_eip;
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uint32_t r_eax;
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uint32_t fnstenv[7];
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if (address == code_start + 4) { // The first fnstenv executed
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// Save the address of the fld.
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OK(uc_reg_read(uc, UC_X86_REG_EIP, &r_eip));
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*((uint32_t *)user_data) = r_eip;
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OK(uc_reg_read(uc, UC_X86_REG_EAX, &r_eax));
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OK(uc_mem_read(uc, r_eax, fnstenv, sizeof(fnstenv)));
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// Don't update FCS:FIP for fnop.
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TEST_CHECK(fnstenv[3] == 0);
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}
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}
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static void test_x86_x87_fnstenv()
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{
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uc_engine *uc;
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uc_hook hook;
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char code[] =
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"\xd9\xd0\xd9\x30\xd9\x00\xd9\x30"; // fnop;fnstenv [eax];fld dword ptr
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// [eax];fnstenv [eax]
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uint32_t base = code_start + 3 * code_len;
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uint32_t last_eip;
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uint32_t fnstenv[7];
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uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
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OK(uc_mem_map(uc, base, code_len, UC_PROT_ALL));
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OK(uc_reg_write(uc, UC_X86_REG_EAX, &base));
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OK(uc_hook_add(uc, &hook, UC_HOOK_CODE, test_x86_x87_fnstenv_callback,
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&last_eip, 1, 0));
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OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
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OK(uc_mem_read(uc, base, fnstenv, sizeof(fnstenv)));
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// But update FCS:FIP for fld.
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TEST_CHECK(fnstenv[3] == last_eip);
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OK(uc_close(uc));
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}
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static uint64_t test_x86_mmio_read_callback(uc_engine *uc, uint64_t offset,
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unsigned size, void *user_data)
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{
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TEST_CHECK(offset == 4);
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TEST_CHECK(size == 4);
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return 0x19260817;
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}
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static void test_x86_mmio_write_callback(uc_engine *uc, uint64_t offset,
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unsigned size, uint64_t value,
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void *user_data)
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{
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TEST_CHECK(offset == 4);
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TEST_CHECK(size == 4);
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TEST_CHECK(value == 0xdeadbeef);
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return;
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}
|
|
|
|
static void test_x86_mmio()
|
|
{
|
|
uc_engine *uc;
|
|
int r_ecx = 0xdeadbeef;
|
|
char code[] =
|
|
"\x89\x0d\x04\x00\x02\x00\x8b\x0d\x04\x00\x02\x00"; // mov [0x20004],
|
|
// ecx; mov ecx,
|
|
// [0x20004]
|
|
|
|
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
|
|
OK(uc_reg_write(uc, UC_X86_REG_ECX, &r_ecx));
|
|
OK(uc_mmio_map(uc, 0x20000, 0x1000, test_x86_mmio_read_callback, NULL,
|
|
test_x86_mmio_write_callback, NULL));
|
|
|
|
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
|
|
|
|
OK(uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx));
|
|
|
|
TEST_CHECK(r_ecx == 0x19260817);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
static bool test_x86_missing_code_callback(uc_engine *uc, uc_mem_type type,
|
|
uint64_t address, int size,
|
|
uint64_t value, void *user_data)
|
|
{
|
|
char code[] = "\x41\x4a"; // inc ecx; dec edx;
|
|
uint64_t algined_address = address & 0xFFFFFFFFFFFFF000ULL;
|
|
int aligned_size = ((int)(size / 0x1000) + 1) * 0x1000;
|
|
|
|
OK(uc_mem_map(uc, algined_address, aligned_size, UC_PROT_ALL));
|
|
|
|
OK(uc_mem_write(uc, algined_address, code, sizeof(code) - 1));
|
|
|
|
return true;
|
|
}
|
|
|
|
static void test_x86_missing_code()
|
|
{
|
|
uc_engine *uc;
|
|
uc_hook hook;
|
|
int r_ecx = 0x1234;
|
|
int r_edx = 0x7890;
|
|
|
|
// Don't write any code by design.
|
|
OK(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
|
|
OK(uc_reg_write(uc, UC_X86_REG_ECX, &r_ecx));
|
|
OK(uc_reg_write(uc, UC_X86_REG_EDX, &r_edx));
|
|
OK(uc_hook_add(uc, &hook, UC_HOOK_MEM_UNMAPPED,
|
|
test_x86_missing_code_callback, NULL, 1, 0));
|
|
|
|
OK(uc_emu_start(uc, code_start, code_start + 2, 0, 0));
|
|
|
|
OK(uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx));
|
|
OK(uc_reg_read(uc, UC_X86_REG_EDX, &r_edx));
|
|
|
|
TEST_CHECK(r_ecx == 0x1235);
|
|
TEST_CHECK(r_edx == 0x788f);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
static void test_x86_smc_xor()
|
|
{
|
|
uc_engine *uc;
|
|
/*
|
|
* 0x1000 xor dword ptr [edi+0x3], eax ; edi=0x1000, eax=0xbc4177e6
|
|
* 0x1003 dw 0x3ea98b13
|
|
*/
|
|
char code[] = "\x31\x47\x03\x13\x8b\xa9\x3e";
|
|
int r_edi = code_start;
|
|
int r_eax = 0xbc4177e6;
|
|
uint32_t result;
|
|
|
|
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
|
|
uc_reg_write(uc, UC_X86_REG_EDI, &r_edi);
|
|
uc_reg_write(uc, UC_X86_REG_EAX, &r_eax);
|
|
|
|
OK(uc_emu_start(uc, code_start, code_start + 3, 0, 0));
|
|
|
|
OK(uc_mem_read(uc, code_start + 3, (void *)&result, 4));
|
|
|
|
TEST_CHECK(result == (0x3ea98b13 ^ 0xbc4177e6));
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
static uint64_t test_x86_mmio_uc_mem_rw_read_callback(uc_engine *uc,
|
|
uint64_t offset,
|
|
unsigned size,
|
|
void *user_data)
|
|
{
|
|
TEST_CHECK(offset == 8);
|
|
TEST_CHECK(size == 4);
|
|
|
|
return 0x19260817;
|
|
}
|
|
|
|
static void test_x86_mmio_uc_mem_rw_write_callback(uc_engine *uc,
|
|
uint64_t offset,
|
|
unsigned size,
|
|
uint64_t value,
|
|
void *user_data)
|
|
{
|
|
TEST_CHECK(offset == 4);
|
|
TEST_CHECK(size == 4);
|
|
TEST_CHECK(value == 0xdeadbeef);
|
|
|
|
return;
|
|
}
|
|
|
|
static void test_x86_mmio_uc_mem_rw()
|
|
{
|
|
uc_engine *uc;
|
|
int data = 0xdeadbeef;
|
|
|
|
OK(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
|
|
|
|
OK(uc_mmio_map(uc, 0x20000, 0x1000, test_x86_mmio_uc_mem_rw_read_callback,
|
|
NULL, test_x86_mmio_uc_mem_rw_write_callback, NULL));
|
|
|
|
OK(uc_mem_write(uc, 0x20004, (void *)&data, 4));
|
|
OK(uc_mem_read(uc, 0x20008, (void *)&data, 4));
|
|
|
|
TEST_CHECK(data == 0x19260817);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
static void test_x86_sysenter_hook(uc_engine *uc, void *user)
|
|
{
|
|
*(int *)user = 1;
|
|
}
|
|
|
|
static void test_x86_sysenter()
|
|
{
|
|
uc_engine *uc;
|
|
char code[] = "\x0F\x34"; // sysenter
|
|
uc_hook h;
|
|
int called = 0;
|
|
|
|
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
|
|
|
|
OK(uc_hook_add(uc, &h, UC_HOOK_INSN, test_x86_sysenter_hook, &called, 1, 0,
|
|
UC_X86_INS_SYSENTER));
|
|
|
|
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
|
|
|
|
TEST_CHECK(called == 1);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
static void test_x86_hook_cpuid_callback(uc_engine *uc, void *data)
|
|
{
|
|
int reg = 7;
|
|
|
|
OK(uc_reg_write(uc, UC_X86_REG_EAX, ®));
|
|
}
|
|
|
|
static void test_x86_hook_cpuid()
|
|
{
|
|
uc_engine *uc;
|
|
char code[] = "\x40\x0F\xA2"; // INC EAX; CPUID
|
|
uc_hook h;
|
|
int reg;
|
|
|
|
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
|
|
|
|
OK(uc_hook_add(uc, &h, UC_HOOK_INSN, test_x86_hook_cpuid_callback, NULL, 1,
|
|
0, UC_X86_INS_CPUID));
|
|
|
|
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
|
|
|
|
OK(uc_reg_read(uc, UC_X86_REG_EAX, ®));
|
|
|
|
TEST_CHECK(reg == 7);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
// This is a regression bug.
|
|
static void test_x86_clear_tb_cache()
|
|
{
|
|
uc_engine *uc;
|
|
char code[] = "\x83\xc1\x01\x4a"; // ADD ecx, 1; DEC edx;
|
|
int r_ecx = 0x1234;
|
|
int r_edx = 0x7890;
|
|
uint64_t code_start = 0x1240; // Choose this address by design
|
|
uint64_t code_len = 0x1000;
|
|
|
|
OK(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
|
|
OK(uc_mem_map(uc, code_start & (1 << 12), code_len, UC_PROT_ALL));
|
|
OK(uc_mem_write(uc, code_start, code, sizeof(code)));
|
|
OK(uc_reg_write(uc, UC_X86_REG_ECX, &r_ecx));
|
|
OK(uc_reg_write(uc, UC_X86_REG_EDX, &r_edx));
|
|
|
|
// This emulation should take no effect at all.
|
|
OK(uc_emu_start(uc, code_start, code_start, 0, 0));
|
|
|
|
// Emulate ADD ecx, 1.
|
|
OK(uc_emu_start(uc, code_start, code_start + 3, 0, 0));
|
|
|
|
// If tb cache is not cleared, edx would be still 0x7890
|
|
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
|
|
|
|
OK(uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx));
|
|
OK(uc_reg_read(uc, UC_X86_REG_EDX, &r_edx));
|
|
|
|
TEST_CHECK(r_ecx == 0x1236);
|
|
TEST_CHECK(r_edx == 0x788f);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
// This is a regression bug.
|
|
static void test_x86_clear_empty_tb()
|
|
{
|
|
uc_engine *uc;
|
|
// lb:
|
|
// add ecx, 1;
|
|
// cmp ecx, 0;
|
|
// jz lb;
|
|
// dec edx;
|
|
char code[] = "\x83\xc1\x01\x83\xf9\x00\x74\xf8\x4a";
|
|
int r_edx = 0x7890;
|
|
uint64_t code_start = 0x1240; // Choose this address by design
|
|
uint64_t code_len = 0x1000;
|
|
|
|
OK(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
|
|
OK(uc_mem_map(uc, code_start & (1 << 12), code_len, UC_PROT_ALL));
|
|
OK(uc_mem_write(uc, code_start, code, sizeof(code)));
|
|
OK(uc_reg_write(uc, UC_X86_REG_EDX, &r_edx));
|
|
|
|
// Make sure we generate an empty tb at the exit address by stopping at dec
|
|
// edx.
|
|
OK(uc_emu_start(uc, code_start, code_start + 8, 0, 0));
|
|
|
|
// If tb cache is not cleared, edx would be still 0x7890
|
|
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
|
|
|
|
OK(uc_reg_read(uc, UC_X86_REG_EDX, &r_edx));
|
|
|
|
TEST_CHECK(r_edx == 0x788f);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
typedef struct _HOOK_TCG_OP_RESULT {
|
|
uint64_t address;
|
|
uint64_t arg1;
|
|
uint64_t arg2;
|
|
} HOOK_TCG_OP_RESULT;
|
|
|
|
typedef struct _HOOK_TCG_OP_RESULTS {
|
|
HOOK_TCG_OP_RESULT results[128];
|
|
uint64_t len;
|
|
} HOOK_TCG_OP_RESULTS;
|
|
|
|
static void test_x86_hook_tcg_op_cb(uc_engine *uc, uint64_t address,
|
|
uint64_t arg1, uint64_t arg2, uint32_t size,
|
|
void *data)
|
|
{
|
|
HOOK_TCG_OP_RESULTS *results = (HOOK_TCG_OP_RESULTS *)data;
|
|
HOOK_TCG_OP_RESULT *result = &results->results[results->len++];
|
|
|
|
result->address = address;
|
|
result->arg1 = arg1;
|
|
result->arg2 = arg2;
|
|
}
|
|
|
|
static void test_x86_hook_tcg_op()
|
|
{
|
|
uc_engine *uc;
|
|
uc_hook h;
|
|
int flag;
|
|
HOOK_TCG_OP_RESULTS results;
|
|
// sub esi, [0x1000];
|
|
// sub eax, ebx;
|
|
// sub eax, 1;
|
|
// cmp eax, 0;
|
|
// cmp ebx, edx;
|
|
// cmp esi, [0x1000];
|
|
char code[] = "\x2b\x35\x00\x10\x00\x00\x29\xd8\x83\xe8\x01\x83\xf8\x00\x39"
|
|
"\xd3\x3b\x35\x00\x10\x00\x00";
|
|
int r_eax = 0x1234;
|
|
int r_ebx = 2;
|
|
|
|
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
|
|
OK(uc_reg_write(uc, UC_X86_REG_EAX, &r_eax));
|
|
OK(uc_reg_write(uc, UC_X86_REG_EBX, &r_ebx));
|
|
|
|
memset(&results, 0, sizeof(HOOK_TCG_OP_RESULTS));
|
|
flag = 0;
|
|
OK(uc_hook_add(uc, &h, UC_HOOK_TCG_OPCODE, test_x86_hook_tcg_op_cb,
|
|
&results, 0, -1, UC_TCG_OP_SUB, flag));
|
|
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
|
|
OK(uc_hook_del(uc, h));
|
|
|
|
TEST_CHECK(results.len == 6);
|
|
|
|
memset(&results, 0, sizeof(HOOK_TCG_OP_RESULTS));
|
|
flag = UC_TCG_OP_FLAG_DIRECT;
|
|
OK(uc_hook_add(uc, &h, UC_HOOK_TCG_OPCODE, test_x86_hook_tcg_op_cb,
|
|
&results, 0, -1, UC_TCG_OP_SUB, flag));
|
|
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
|
|
OK(uc_hook_del(uc, h));
|
|
|
|
TEST_CHECK(results.len == 3);
|
|
|
|
memset(&results, 0, sizeof(HOOK_TCG_OP_RESULTS));
|
|
flag = UC_TCG_OP_FLAG_CMP;
|
|
OK(uc_hook_add(uc, &h, UC_HOOK_TCG_OPCODE, test_x86_hook_tcg_op_cb,
|
|
&results, 0, -1, UC_TCG_OP_SUB, flag));
|
|
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
|
|
OK(uc_hook_del(uc, h));
|
|
|
|
TEST_CHECK(results.len == 3);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
static void test_x86_cmpxchg_mem_hook(uc_engine *uc, uc_mem_type type,
|
|
uint64_t address, int size, int64_t val,
|
|
void *data)
|
|
{
|
|
if (type == UC_MEM_READ) {
|
|
*((int *)data) |= 1;
|
|
} else {
|
|
*((int *)data) |= 2;
|
|
}
|
|
}
|
|
|
|
static void test_x86_cmpxchg()
|
|
{
|
|
uc_engine *uc;
|
|
char code[] = "\x0F\xC7\x0D\xE0\xBE\xAD\xDE"; // cmpxchg8b [0xdeadbee0]
|
|
int r_zero = 0;
|
|
int r_aaaa = 0x41414141;
|
|
uint64_t mem;
|
|
uc_hook h;
|
|
int result = 0;
|
|
|
|
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
|
|
OK(uc_mem_map(uc, 0xdeadb000, 0x1000, UC_PROT_ALL));
|
|
OK(uc_hook_add(uc, &h, UC_HOOK_MEM_READ | UC_HOOK_MEM_WRITE,
|
|
test_x86_cmpxchg_mem_hook, &result, 1, 0));
|
|
|
|
OK(uc_reg_write(uc, UC_X86_REG_EDX, &r_zero));
|
|
OK(uc_reg_write(uc, UC_X86_REG_EAX, &r_zero));
|
|
OK(uc_reg_write(uc, UC_X86_REG_ECX, &r_aaaa));
|
|
OK(uc_reg_write(uc, UC_X86_REG_EBX, &r_aaaa));
|
|
|
|
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
|
|
|
|
OK(uc_mem_read(uc, 0xdeadbee0, &mem, 8));
|
|
|
|
TEST_CHECK(mem == 0x4141414141414141);
|
|
|
|
// Both read and write happened.
|
|
TEST_CHECK(result == 3);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
static void test_x86_nested_emu_start_cb(uc_engine *uc, uint64_t addr,
|
|
size_t size, void *data)
|
|
{
|
|
OK(uc_emu_start(uc, code_start + 1, code_start + 2, 0, 0));
|
|
}
|
|
|
|
static void test_x86_nested_emu_start()
|
|
{
|
|
uc_engine *uc;
|
|
char code[] = "\x41\x4a"; // INC ecx; DEC edx;
|
|
int r_ecx = 0x1234;
|
|
int r_edx = 0x7890;
|
|
uc_hook h;
|
|
|
|
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
|
|
OK(uc_reg_write(uc, UC_X86_REG_ECX, &r_ecx));
|
|
OK(uc_reg_write(uc, UC_X86_REG_EDX, &r_edx));
|
|
// Emulate DEC in the nested hook.
|
|
OK(uc_hook_add(uc, &h, UC_HOOK_CODE, test_x86_nested_emu_start_cb, NULL,
|
|
code_start, code_start));
|
|
|
|
// Emulate INC
|
|
OK(uc_emu_start(uc, code_start, code_start + 1, 0, 0));
|
|
|
|
OK(uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx));
|
|
OK(uc_reg_read(uc, UC_X86_REG_EDX, &r_edx));
|
|
|
|
TEST_CHECK(r_ecx == 0x1235);
|
|
TEST_CHECK(r_edx == 0x788f);
|
|
|
|
OK(uc_close(uc));
|
|
}
|
|
|
|
TEST_LIST = {{"test_x86_in", test_x86_in},
|
|
{"test_x86_out", test_x86_out},
|
|
{"test_x86_mem_hook_all", test_x86_mem_hook_all},
|
|
{"test_x86_inc_dec_pxor", test_x86_inc_dec_pxor},
|
|
{"test_x86_relative_jump", test_x86_relative_jump},
|
|
{"test_x86_loop", test_x86_loop},
|
|
{"test_x86_invalid_mem_read", test_x86_invalid_mem_read},
|
|
{"test_x86_invalid_mem_write", test_x86_invalid_mem_write},
|
|
{"test_x86_invalid_jump", test_x86_invalid_jump},
|
|
{"test_x86_64_syscall", test_x86_64_syscall},
|
|
{"test_x86_16_add", test_x86_16_add},
|
|
{"test_x86_reg_save", test_x86_reg_save},
|
|
{"test_x86_invalid_mem_read_stop_in_cb",
|
|
test_x86_invalid_mem_read_stop_in_cb},
|
|
{"test_x86_x87_fnstenv", test_x86_x87_fnstenv},
|
|
{"test_x86_mmio", test_x86_mmio},
|
|
{"test_x86_missing_code", test_x86_missing_code},
|
|
{"test_x86_smc_xor", test_x86_smc_xor},
|
|
{"test_x86_mmio_uc_mem_rw", test_x86_mmio_uc_mem_rw},
|
|
{"test_x86_sysenter", test_x86_sysenter},
|
|
{"test_x86_hook_cpuid", test_x86_hook_cpuid},
|
|
{"test_x86_clear_tb_cache", test_x86_clear_tb_cache},
|
|
{"test_x86_clear_empty_tb", test_x86_clear_empty_tb},
|
|
{"test_x86_hook_tcg_op", test_x86_hook_tcg_op},
|
|
{"test_x86_cmpxchg", test_x86_cmpxchg},
|
|
{"test_x86_nested_emu_start", test_x86_nested_emu_start},
|
|
{NULL, NULL}}; |