Кости и Баги (Dice and Bug)

bug-makers

Task: Python 3.9 .pyc file containing a Farkle dice game with obfuscated flag logic. Solution: decompile with pycdc, unwrap 64 nested exec(zlib+base64) layers to recover XOR key and ciphertext, decrypt flag statically.

python decompilation base64 xor obfuscation pyc bytecode zlib nested_exec farkle python39

pyc_decompilation_with_pycdcnested_exec_deobfuscationreversed_base64_zlib_unwrappingxor_decryption_with_static_keydocker_version_matched_marshal_loading

$ ls tags/ techniques/

python decompilation base64 xor obfuscation pyc bytecode zlib nested_exec farkle python39

pyc_decompilation_with_pycdcnested_exec_deobfuscationreversed_base64_zlib_unwrappingxor_decryption_with_static_keydocker_version_matched_marshal_loading

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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