Python 3.8+, struct library (built-in).
if not found: print("Manual extraction failed - file is likely packed.") manual_extract("your_target.exe") Python 3
# Search for cookie pattern (varies by version) patterns = [b'MEI', b'pyi', b'PYI'] found = None Python 3
| Tool | Best for | Command | |------|----------|---------| | pyinstxtractor-ng | PyInstaller 5.x | python pyinstxtractor-ng.py target.exe | | unpy2exe | Old PyInstaller 3.x | unpy2exe target.exe | | pyinstxtractor-mac | macOS .app bundles | python pyinstxtractor.py target.app/Contents/MacOS/target | | python_exe_unpacker | Generic | python python_exe_unpacker.py -f target.exe | Python 3
strings your_target.exe | grep -i "pyi" strings your_target.exe | grep -i "mei" Look for output like pyi-windows-manifest , MEI , PyInstaller , or paths containing _MEI .
pip install pyextract pyextract your_target.exe -o output_dir If the above fail, use the official PyInstaller utility (requires PyInstaller installed):