add tests to test_x86.c from samples/
This commit is contained in:
Jonathon Reinhart
parent
c026c23efb
commit
7a98fc4e78
@ -1,9 +1,5 @@
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#include <stdarg.h>
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#include <stddef.h>
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#include <setjmp.h>
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#include "unicorn_test.h"
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#include <inttypes.h>
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#include <cmocka.h>
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#include <unicorn/unicorn.h>
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// callback for tracing basic blocks
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static void hook_block(uc_engine *uc, uint64_t address, uint32_t size, void *user_data)
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@ -25,12 +21,6 @@ static void hook_code(uc_engine *uc, uint64_t address, uint32_t size, void *user
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// uc_emu_stop(uc);
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}
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static void uc_assert_success(uc_err err)
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{
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assert_int_equal(err, 0);
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// uc_strerror(err)
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}
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static void test_i386(void **state)
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{
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uc_engine *uc;
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@ -91,9 +81,577 @@ static void test_i386(void **state)
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uc_close(uc);
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}
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static void test_i386_jump(void **state)
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{
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uc_engine *uc;
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uc_err err;
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uc_hook trace1, trace2;
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const uint8_t code[] = "\xeb\x02\x90\x90\x90\x90\x90\x90"; // jmp 4; nop; nop; nop; nop; nop; nop
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const uint64_t address = 0x1000000;
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// Initialize emulator in X86-32bit mode
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err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
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uc_assert_success(err);
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// map 2MB memory for this emulation
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err = uc_mem_map(uc, address, 2 * 1024 * 1024, UC_PROT_ALL);
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uc_assert_success(err);
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// write machine code to be emulated to memory
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err = uc_mem_write(uc, address, code, sizeof(code)-1);
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uc_assert_success(err);
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// tracing 1 basic block with customized callback
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err = uc_hook_add(uc, &trace1, UC_HOOK_BLOCK, hook_block, NULL, (uint64_t)address, (uint64_t)address);
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uc_assert_success(err);
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// tracing 1 instruction at address
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err = uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, (uint64_t)address, (uint64_t)address);
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uc_assert_success(err);
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// emulate machine code in infinite time
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err = uc_emu_start(uc, address, address+sizeof(code)-1, 0, 0);
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uc_assert_success(err);
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err = uc_close(uc);
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uc_assert_success(err);
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}
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/******************************************************************************/
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// callback for IN instruction (X86).
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// this returns the data read from the port
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static uint32_t hook_in(uc_engine *uc, uint32_t port, int size, void *user_data)
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{
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uint32_t eip;
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uc_reg_read(uc, UC_X86_REG_EIP, &eip);
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printf("--- reading from port 0x%x, size: %u, address: 0x%x\n", port, size, eip);
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switch(size) {
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default:
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return 0; // should never reach this
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case 1:
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// read 1 byte to AL
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return 0xf1;
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case 2:
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// read 2 byte to AX
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return 0xf2;
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case 4:
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// read 4 byte to EAX
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return 0xf4;
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}
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}
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// callback for OUT instruction (X86).
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static void hook_out(uc_engine *uc, uint32_t port, int size, uint32_t value, void *user_data)
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{
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uint32_t tmp;
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uint32_t eip;
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uc_reg_read(uc, UC_X86_REG_EIP, &eip);
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printf("--- writing to port 0x%x, size: %u, value: 0x%x, address: 0x%x\n", port, size, value, eip);
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// TODO: confirm that value is indeed the value of AL/AX/EAX
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switch(size) {
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default:
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return; // should never reach this
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case 1:
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uc_reg_read(uc, UC_X86_REG_AL, &tmp);
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break;
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case 2:
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uc_reg_read(uc, UC_X86_REG_AX, &tmp);
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break;
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case 4:
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uc_reg_read(uc, UC_X86_REG_EAX, &tmp);
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break;
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}
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printf("--- register value = 0x%x\n", tmp);
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}
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static void test_i386_inout(void **state)
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{
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uc_engine *uc;
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uc_err err;
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uc_hook trace1, trace2, trace3, trace4;
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int r_eax = 0x1234; // EAX register
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int r_ecx = 0x6789; // ECX register
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static const uint64_t address = 0x1000000;
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static const uint8_t code[] = {
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0x41, // inc ecx
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0xE4, 0x3F, // in al, 0x3F
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0x4A, // dec edx
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0xE6, 0x46, // out 0x46, al
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0x43, // inc ebx
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};
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// Initialize emulator in X86-32bit mode
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err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
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uc_assert_success(err);
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// map 2MB memory for this emulation
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err = uc_mem_map(uc, address, 2 * 1024 * 1024, UC_PROT_ALL);
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uc_assert_success(err);
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// write machine code to be emulated to memory
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err = uc_mem_write(uc, address, code, sizeof(code));
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uc_assert_success(err);
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// initialize machine registers
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err = uc_reg_write(uc, UC_X86_REG_EAX, &r_eax);
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uc_assert_success(err);
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err = uc_reg_write(uc, UC_X86_REG_ECX, &r_ecx);
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uc_assert_success(err);
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// tracing all basic blocks with customized callback
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err = uc_hook_add(uc, &trace1, UC_HOOK_BLOCK, hook_block, NULL, (uint64_t)1, (uint64_t)0);
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uc_assert_success(err);
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// tracing all instructions
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err = uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, (uint64_t)1, (uint64_t)0);
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uc_assert_success(err);
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// uc IN instruction
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err = uc_hook_add(uc, &trace3, UC_HOOK_INSN, hook_in, NULL, UC_X86_INS_IN);
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uc_assert_success(err);
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// uc OUT instruction
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err = uc_hook_add(uc, &trace4, UC_HOOK_INSN, hook_out, NULL, UC_X86_INS_OUT);
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uc_assert_success(err);
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// emulate machine code in infinite time
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err = uc_emu_start(uc, address, address+sizeof(code), 0, 0);
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uc_assert_success(err);
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uc_reg_read(uc, UC_X86_REG_EAX, &r_eax);
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uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx);
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printf(">>> EAX = 0x%x\n", r_eax);
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printf(">>> ECX = 0x%x\n", r_ecx);
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// TODO: Assert on the register values here
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uc_assert_success(uc_close(uc));
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}
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/******************************************************************************/
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// emulate code that loop forever
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static void test_i386_loop(void **state)
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{
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uc_engine *uc;
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uc_err err;
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int r_ecx = 0x1234; // ECX register
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int r_edx = 0x7890; // EDX register
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static const uint64_t address = 0x1000000;
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static const uint8_t code[] = {
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0x41, // inc ecx
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0x4a, // dec edx
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0xEB, 0xFE, // jmp $
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};
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// Initialize emulator in X86-32bit mode
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err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
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uc_assert_success(err);
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// map 2MB memory for this emulation
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err = uc_mem_map(uc, address, 2 * 1024 * 1024, UC_PROT_ALL);
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uc_assert_success(err);
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// write machine code to be emulated to memory
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err = uc_mem_write(uc, address, code, sizeof(code));
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uc_assert_success(err);
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// initialize machine registers
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err = uc_reg_write(uc, UC_X86_REG_ECX, &r_ecx);
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uc_assert_success(err);
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err = uc_reg_write(uc, UC_X86_REG_EDX, &r_edx);
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uc_assert_success(err);
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// emulate machine code in 2 seconds, so we can quit even
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// if the code loops
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err = uc_emu_start(uc, address, address+sizeof(code), 2*UC_SECOND_SCALE, 0);
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uc_assert_success(err);
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// verify register values
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uc_assert_success(uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx));
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uc_assert_success(uc_reg_read(uc, UC_X86_REG_EDX, &r_edx));
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assert_int_equal(r_ecx, 0x1235);
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assert_int_equal(r_edx, 0x788F);
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uc_assert_success(uc_close(uc));
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}
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/******************************************************************************/
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// emulate code that reads invalid memory
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static void test_i386_invalid_mem_read(void **state)
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{
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uc_engine *uc;
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uc_err err;
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static const uint64_t address = 0x1000000;
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static const uint8_t code[] = {
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0x88, 0x0D, 0xAA, 0xAA, 0xAA, 0xAA, // mov ecx, [0xAAAAAAAA]
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};
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// Initialize emulator in X86-32bit mode
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err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
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uc_assert_success(err);
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// map 2MB memory for this emulation
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err = uc_mem_map(uc, address, 2 * 1024 * 1024, UC_PROT_ALL);
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uc_assert_success(err);
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// write machine code to be emulated to memory
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err = uc_mem_write(uc, address, code, sizeof(code));
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uc_assert_success(err);
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// emulate machine code in infinite time
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err = uc_emu_start(uc, address, address+sizeof(code), 0, 0);
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uc_assert_err(UC_ERR_MEM_READ, err); // TODO: Currently returns MEM_WRITE
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uc_assert_success(uc_close(uc));
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}
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// emulate code that writes invalid memory
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static void test_i386_invalid_mem_write(void **state)
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{
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uc_engine *uc;
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uc_err err;
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static const uint64_t address = 0x1000000;
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static const uint8_t code[] = {
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0x89, 0x0D, 0xAA, 0xAA, 0xAA, 0xAA, // mov [0xAAAAAAAA], ecx
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};
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// Initialize emulator in X86-32bit mode
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err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
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uc_assert_success(err);
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// map 2MB memory for this emulation
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err = uc_mem_map(uc, address, 2 * 1024 * 1024, UC_PROT_ALL);
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uc_assert_success(err);
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// write machine code to be emulated to memory
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err = uc_mem_write(uc, address, code, sizeof(code));
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uc_assert_success(err);
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// emulate machine code in infinite time
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err = uc_emu_start(uc, address, address+sizeof(code), 0, 0);
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uc_assert_err(UC_ERR_MEM_WRITE, err);
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uc_assert_success(uc_close(uc));
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}
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// emulate code that jumps to invalid memory
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static void test_i386_jump_invalid(void **state)
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{
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uc_engine *uc;
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uc_err err;
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static const uint64_t address = 0x1000000;
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static const uint8_t code[] = {
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0xE9, 0xE9, 0xEE, 0xEE, 0xEE, // jmp 0xEEEEEEEE
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};
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// Initialize emulator in X86-32bit mode
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err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
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uc_assert_success(err);
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// map 2MB memory for this emulation
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err = uc_mem_map(uc, address, 2 * 1024 * 1024, UC_PROT_ALL);
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uc_assert_success(err);
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// write machine code to be emulated to memory
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err = uc_mem_write(uc, address, code, sizeof(code));
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uc_assert_success(err);
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// emulate machine code in infinite time
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err = uc_emu_start(uc, address, address+sizeof(code), 0, 0);
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uc_assert_err(UC_ERR_CODE_INVALID, err);
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uc_assert_success(uc_close(uc));
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}
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/******************************************************************************/
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static void hook_mem64(uc_engine *uc, uc_mem_type type,
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uint64_t address, int size, int64_t value, void *user_data)
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{
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switch(type) {
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default: break;
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case UC_MEM_READ:
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printf(">>> Memory is being READ at 0x%"PRIx64 ", data size = %u\n",
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address, size);
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break;
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case UC_MEM_WRITE:
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printf(">>> Memory is being WRITE at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n",
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address, size, value);
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break;
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}
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}
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// callback for tracing instruction
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static void hook_code64(uc_engine *uc, uint64_t address, uint32_t size, void *user_data)
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{
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uint64_t rip;
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uc_reg_read(uc, UC_X86_REG_RIP, &rip);
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printf(">>> Tracing instruction at 0x%"PRIx64 ", instruction size = 0x%x\n", address, size);
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printf(">>> RIP is 0x%"PRIx64 "\n", rip);
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// Uncomment below code to stop the emulation using uc_emu_stop()
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// if (address == 0x1000009)
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// uc_emu_stop(uc);
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}
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static void test_x86_64(void **state)
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{
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uc_engine *uc;
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uc_err err;
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uc_hook trace1, trace2, trace3, trace4;
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static const uint64_t address = 0x1000000;
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static const uint8_t code[] = "\x41\xBC\x3B\xB0\x28\x2A\x49\x0F\xC9\x90\x4D\x0F\xAD\xCF\x49\x87\xFD\x90\x48\x81\xD2\x8A\xCE\x77\x35\x48\xF7\xD9\x4D\x29\xF4\x49\x81\xC9\xF6\x8A\xC6\x53\x4D\x87\xED\x48\x0F\xAD\xD2\x49\xF7\xD4\x48\xF7\xE1\x4D\x19\xC5\x4D\x89\xC5\x48\xF7\xD6\x41\xB8\x4F\x8D\x6B\x59\x4D\x87\xD0\x68\x6A\x1E\x09\x3C\x59";
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int64_t rax = 0x71f3029efd49d41d;
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int64_t rbx = 0xd87b45277f133ddb;
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int64_t rcx = 0xab40d1ffd8afc461;
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int64_t rdx = 0x919317b4a733f01;
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int64_t rsi = 0x4c24e753a17ea358;
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int64_t rdi = 0xe509a57d2571ce96;
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int64_t r8 = 0xea5b108cc2b9ab1f;
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int64_t r9 = 0x19ec097c8eb618c1;
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int64_t r10 = 0xec45774f00c5f682;
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int64_t r11 = 0xe17e9dbec8c074aa;
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int64_t r12 = 0x80f86a8dc0f6d457;
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int64_t r13 = 0x48288ca5671c5492;
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int64_t r14 = 0x595f72f6e4017f6e;
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int64_t r15 = 0x1efd97aea331cccc;
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int64_t rsp = address + 0x200000;
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// Initialize emulator in X86-64bit mode
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err = uc_open(UC_ARCH_X86, UC_MODE_64, &uc);
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uc_assert_success(err);
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// map 2MB memory for this emulation
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err = uc_mem_map(uc, address, 2 * 1024 * 1024, UC_PROT_ALL);
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uc_assert_success(err);
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// write machine code to be emulated to memory
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err = uc_mem_write(uc, address, code, sizeof(code));
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uc_assert_success(err);
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// initialize machine registers
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_RSP, &rsp));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_RAX, &rax));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_RBX, &rbx));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_RCX, &rcx));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_RDX, &rdx));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_RSI, &rsi));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_RDI, &rdi));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_R8, &r8));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_R9, &r9));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_R10, &r10));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_R11, &r11));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_R12, &r12));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_R13, &r13));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_R14, &r14));
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uc_assert_success(uc_reg_write(uc, UC_X86_REG_R15, &r15));
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// tracing all basic blocks with customized callback
|
||||
err = uc_hook_add(uc, &trace1, UC_HOOK_BLOCK, hook_block, NULL, (uint64_t)1, (uint64_t)0);
|
||||
uc_assert_success(err);
|
||||
|
||||
// tracing all instructions in the range [address, address+20]
|
||||
err = uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code64, NULL, (uint64_t)address, (uint64_t)(address+20));
|
||||
uc_assert_success(err);
|
||||
|
||||
// tracing all memory WRITE access (with @begin > @end)
|
||||
err = uc_hook_add(uc, &trace3, UC_HOOK_MEM_WRITE, hook_mem64, NULL, (uint64_t)1, (uint64_t)0);
|
||||
uc_assert_success(err);
|
||||
|
||||
// tracing all memory READ access (with @begin > @end)
|
||||
err = uc_hook_add(uc, &trace4, UC_HOOK_MEM_READ, hook_mem64, NULL, (uint64_t)1, (uint64_t)0);
|
||||
uc_assert_success(err);
|
||||
|
||||
// emulate machine code in infinite time (last param = 0), or when
|
||||
// finishing all the code.
|
||||
err = uc_emu_start(uc, address, address+sizeof(code), 0, 0);
|
||||
uc_assert_success(err);
|
||||
|
||||
// Read registers
|
||||
uc_reg_read(uc, UC_X86_REG_RAX, &rax);
|
||||
uc_reg_read(uc, UC_X86_REG_RBX, &rbx);
|
||||
uc_reg_read(uc, UC_X86_REG_RCX, &rcx);
|
||||
uc_reg_read(uc, UC_X86_REG_RDX, &rdx);
|
||||
uc_reg_read(uc, UC_X86_REG_RSI, &rsi);
|
||||
uc_reg_read(uc, UC_X86_REG_RDI, &rdi);
|
||||
uc_reg_read(uc, UC_X86_REG_R8, &r8);
|
||||
uc_reg_read(uc, UC_X86_REG_R9, &r9);
|
||||
uc_reg_read(uc, UC_X86_REG_R10, &r10);
|
||||
uc_reg_read(uc, UC_X86_REG_R11, &r11);
|
||||
uc_reg_read(uc, UC_X86_REG_R12, &r12);
|
||||
uc_reg_read(uc, UC_X86_REG_R13, &r13);
|
||||
uc_reg_read(uc, UC_X86_REG_R14, &r14);
|
||||
uc_reg_read(uc, UC_X86_REG_R15, &r15);
|
||||
|
||||
printf(">>> RAX = 0x%" PRIx64 "\n", rax);
|
||||
printf(">>> RBX = 0x%" PRIx64 "\n", rbx);
|
||||
printf(">>> RCX = 0x%" PRIx64 "\n", rcx);
|
||||
printf(">>> RDX = 0x%" PRIx64 "\n", rdx);
|
||||
printf(">>> RSI = 0x%" PRIx64 "\n", rsi);
|
||||
printf(">>> RDI = 0x%" PRIx64 "\n", rdi);
|
||||
printf(">>> R8 = 0x%" PRIx64 "\n", r8);
|
||||
printf(">>> R9 = 0x%" PRIx64 "\n", r9);
|
||||
printf(">>> R10 = 0x%" PRIx64 "\n", r10);
|
||||
printf(">>> R11 = 0x%" PRIx64 "\n", r11);
|
||||
printf(">>> R12 = 0x%" PRIx64 "\n", r12);
|
||||
printf(">>> R13 = 0x%" PRIx64 "\n", r13);
|
||||
printf(">>> R14 = 0x%" PRIx64 "\n", r14);
|
||||
printf(">>> R15 = 0x%" PRIx64 "\n", r15);
|
||||
|
||||
uc_assert_success(uc_close(uc));
|
||||
}
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
// callback for SYSCALL instruction (X86).
|
||||
static void hook_syscall(uc_engine *uc, void *user_data)
|
||||
{
|
||||
uint64_t rax;
|
||||
|
||||
uc_assert_success(uc_reg_read(uc, UC_X86_REG_RAX, &rax));
|
||||
assert_int_equal(0x100, rax);
|
||||
|
||||
rax = 0x200;
|
||||
uc_assert_success(uc_reg_write(uc, UC_X86_REG_RAX, &rax));
|
||||
}
|
||||
|
||||
static void test_x86_64_syscall(void **state)
|
||||
{
|
||||
uc_engine *uc;
|
||||
uc_hook trace1;
|
||||
uc_err err;
|
||||
|
||||
static const uint64_t address = 0x1000000;
|
||||
static const uint8_t code[] = {
|
||||
0x0F, 0x05, // SYSCALL
|
||||
};
|
||||
|
||||
int64_t rax = 0x100;
|
||||
|
||||
// Initialize emulator in X86-64bit mode
|
||||
err = uc_open(UC_ARCH_X86, UC_MODE_64, &uc);
|
||||
uc_assert_success(err);
|
||||
|
||||
// map 2MB memory for this emulation
|
||||
err = uc_mem_map(uc, address, 2 * 1024 * 1024, UC_PROT_ALL);
|
||||
uc_assert_success(err);
|
||||
|
||||
// write machine code to be emulated to memory
|
||||
err = uc_mem_write(uc, address, code, sizeof(code));
|
||||
uc_assert_success(err);
|
||||
|
||||
// hook interrupts for syscall
|
||||
err = uc_hook_add(uc, &trace1, UC_HOOK_INSN, hook_syscall, NULL, UC_X86_INS_SYSCALL);
|
||||
uc_assert_success(err);
|
||||
|
||||
// initialize machine registers
|
||||
err = uc_reg_write(uc, UC_X86_REG_RAX, &rax);
|
||||
uc_assert_success(err);
|
||||
|
||||
// emulate machine code in infinite time (last param = 0), or when
|
||||
// finishing all the code.
|
||||
err = uc_emu_start(uc, address, address + sizeof(code), 0, 0);
|
||||
uc_assert_success(err);
|
||||
|
||||
// verify register values
|
||||
uc_assert_success(uc_reg_read(uc, UC_X86_REG_RAX, &rax));
|
||||
assert_int_equal(0x200, rax);
|
||||
|
||||
uc_assert_success(uc_close(uc));
|
||||
}
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
static void test_x86_16(void **state)
|
||||
{
|
||||
uc_engine *uc;
|
||||
uc_err err;
|
||||
uint8_t tmp;
|
||||
|
||||
static const uint64_t address = 0;
|
||||
static const uint8_t code[] = {
|
||||
0x00, 0x00, // add byte ptr [bx + si], al
|
||||
};
|
||||
|
||||
int32_t eax = 7;
|
||||
int32_t ebx = 5;
|
||||
int32_t esi = 6;
|
||||
|
||||
// Initialize emulator in X86-16bit mode
|
||||
err = uc_open(UC_ARCH_X86, UC_MODE_16, &uc);
|
||||
uc_assert_success(err);
|
||||
|
||||
// map 8KB memory for this emulation
|
||||
err = uc_mem_map(uc, address, 8 * 1024, UC_PROT_ALL);
|
||||
uc_assert_success(err);
|
||||
|
||||
// write machine code to be emulated to memory
|
||||
err = uc_mem_write(uc, address, code, sizeof(code));
|
||||
uc_assert_success(err);
|
||||
|
||||
// initialize machine registers
|
||||
uc_assert_success(uc_reg_write(uc, UC_X86_REG_EAX, &eax));
|
||||
uc_assert_success(uc_reg_write(uc, UC_X86_REG_EBX, &ebx));
|
||||
uc_assert_success(uc_reg_write(uc, UC_X86_REG_ESI, &esi));
|
||||
|
||||
// emulate machine code in infinite time (last param = 0), or when
|
||||
// finishing all the code.
|
||||
err = uc_emu_start(uc, address, address+sizeof(code), 0, 0);
|
||||
uc_assert_success(err);
|
||||
|
||||
// read from memory
|
||||
uc_assert_success(uc_mem_read(uc, 11, &tmp, 1));
|
||||
assert_int_equal(7, tmp);
|
||||
|
||||
uc_assert_success(uc_close(uc));
|
||||
}
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
int main(void) {
|
||||
const struct CMUnitTest tests[] = {
|
||||
cmocka_unit_test(test_i386),
|
||||
cmocka_unit_test(test_i386_jump),
|
||||
cmocka_unit_test(test_i386_inout),
|
||||
cmocka_unit_test(test_i386_loop),
|
||||
cmocka_unit_test(test_i386_invalid_mem_read),
|
||||
cmocka_unit_test(test_i386_invalid_mem_write),
|
||||
cmocka_unit_test(test_i386_jump_invalid),
|
||||
|
||||
// TODO: Infinite loop, then segfault
|
||||
//cmocka_unit_test(test_x86_64),
|
||||
cmocka_unit_test(test_x86_64_syscall),
|
||||
|
||||
cmocka_unit_test(test_x86_16),
|
||||
};
|
||||
return cmocka_run_group_tests(tests, NULL, NULL);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user