mirror of
https://github.com/zardus/ctf-tools
synced 2024-12-13 14:32:34 +00:00
30 lines
855 B
Bash
Executable file
30 lines
855 B
Bash
Executable file
#!/bin/bash
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set -e -o pipefail
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source ctf-tools-venv-activate
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python <<EOF
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from __future__ import print_function
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from unicorn import *
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from unicorn.x86_const import *
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# code to be emulated
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X86_CODE32 = b"\x41\x4a" # INC ecx; DEC edx
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# memory address where emulation starts
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ADDRESS = 0x1000000
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# Initialize emulator in X86-32bit mode
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mu = Uc(UC_ARCH_X86, UC_MODE_32)
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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, X86_CODE32)
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# initialize machine registers
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mu.reg_write(UC_X86_REG_ECX, 0x1234)
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mu.reg_write(UC_X86_REG_EDX, 0x7890)
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# emulate code in infinite time & unlimited instructions
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mu.emu_start(ADDRESS, ADDRESS + len(X86_CODE32))
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r_ecx = mu.reg_read(UC_X86_REG_ECX)
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r_edx = mu.reg_read(UC_X86_REG_EDX)
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assert r_ecx == 0x1235
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assert r_edx == 0x788f
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EOF
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