If the tool shows a PYZ-00.pyz encrypted entry, ask for the --key .

: Some developers modify the standard PyInstaller "magic" (typically 4D 45 49 0C 0B 0A 0B 0E ) to prevent easy extraction. Corrupted File

If you are reading this, you have likely just tried to use a tool like pyinstxtractor.py (PyInstaller Extractor), uncompyle6 , or a reverse engineering framework on an executable file, only to be greeted by the frustrating red text: