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101 lines
2.9 KiB
Python
Executable file
101 lines
2.9 KiB
Python
Executable file
#!/usr/bin/env python
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# Sample code for MIPS of Unicorn. Nguyen Anh Quynh <aquynh@gmail.com>
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# Python sample ported by Loi Anh Tuan <loianhtuan@gmail.com>
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from __future__ import print_function
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from unicorn import *
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from unicorn.mips_const import *
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# code to be emulated
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MIPS_CODE_EB = b"\x34\x21\x34\x56" # ori $at, $at, 0x3456;
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MIPS_CODE_EL = b"\x56\x34\x21\x34" # ori $at, $at, 0x3456;
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# memory address where emulation starts
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ADDRESS = 0x10000
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# callback for tracing basic blocks
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def hook_block(uc, address, size, user_data):
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print(">>> Tracing basic block at 0x%x, block size = 0x%x" %(address, size))
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# callback for tracing instructions
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def hook_code(uc, address, size, user_data):
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print(">>> Tracing instruction at 0x%x, instruction size = 0x%x" %(address, size))
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# Test MIPS EB
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def test_mips_eb():
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print("Emulate MIPS code (big-endian)")
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try:
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# Initialize emulator in MIPS32 + EB mode
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mu = Uc(UC_ARCH_MIPS, UC_MODE_MIPS32 + UC_MODE_BIG_ENDIAN)
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# map 2MB memory for this emulation
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mu.mem_map(ADDRESS, 2 * 1024 * 1024)
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# write machine code to be emulated to memory
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mu.mem_write(ADDRESS, MIPS_CODE_EB)
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# initialize machine registers
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mu.reg_write(UC_MIPS_REG_1, 0x6789)
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# tracing all basic blocks with customized callback
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mu.hook_add(UC_HOOK_BLOCK, hook_block)
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# tracing all instructions with customized callback
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mu.hook_add(UC_HOOK_CODE, hook_code)
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# emulate machine code in infinite time
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mu.emu_start(ADDRESS, ADDRESS + len(MIPS_CODE_EB))
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# now print out some registers
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print(">>> Emulation done. Below is the CPU context")
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r1 = mu.reg_read(UC_MIPS_REG_1)
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print(">>> R1 = 0x%x" %r1)
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except UcError as e:
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print("ERROR: %s" % e)
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# Test MIPS EL
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def test_mips_el():
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print("Emulate MIPS code (little-endian)")
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try:
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# Initialize emulator in MIPS32 + EL mode
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mu = Uc(UC_ARCH_MIPS, UC_MODE_MIPS32 + UC_MODE_LITTLE_ENDIAN)
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# map 2MB memory for this emulation
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mu.mem_map(ADDRESS, 2 * 1024 * 1024)
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# write machine code to be emulated to memory
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mu.mem_write(ADDRESS, MIPS_CODE_EL)
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# initialize machine registers
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mu.reg_write(UC_MIPS_REG_1, 0x6789)
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# tracing all basic blocks with customized callback
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mu.hook_add(UC_HOOK_BLOCK, hook_block)
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# tracing all instructions with customized callback
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mu.hook_add(UC_HOOK_CODE, hook_code)
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# emulate machine code in infinite time
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mu.emu_start(ADDRESS, ADDRESS + len(MIPS_CODE_EL))
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# now print out some registers
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print(">>> Emulation done. Below is the CPU context")
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r1 = mu.reg_read(UC_MIPS_REG_1)
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print(">>> R1 = 0x%x" %r1)
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except UcError as e:
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print("ERROR: %s" % e)
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if __name__ == '__main__':
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test_mips_eb()
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print("=" * 27)
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test_mips_el()
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