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    • Python - Pyinstaller
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On this page
  • Inspect bytecode files in executable:
  • What is a .pyz file?
  • Automated - Extract packaged python bytecode from .exe.
  • Decompile the bytecode:
  • What if it's encrypted?
  • SNEAKIER WAY:
  1. Reverse Engineering

Python - Pyinstaller

PreviousRecommendations

Last updated 8 months ago

Python scripts packaged with pyinstaller have an IDE in them. Converts all scripts into bytecode and packages in an executable. Can be encrypted with a key.

Inspect bytecode files in executable:

pip install pyinstaller

pyi-archive_viewer archivefile

-x to extract:

What is a .pyz file?

A .pyz file is just a normal zip with a header that allows it to be executed. Python can import modules from a zip file exactly like from a subdirectory.

So, if the function is in a file called __main__.py, you just do:

from my_pyz_file.__main__ import runJob

Automated - Extract packaged python bytecode from .exe.

Point at file name and it will output all .pyc files.

python pyinstxtractor-ng.py Filename

Decompile the bytecode:

pip install uncompyle6-3.9.2-py3-none-any.whl

python ./uncompyle6 File.pyc

What if it's encrypted?

The AES key is stored in the pyimod00_crypto_key file. It's just a .pyc so it can be decompiled.

SNEAKIER WAY:

Zipapp: This module provides tools to manage the creation of zip files containing Python code, which can be

If you want to hide your source code more thoroughly, one possible option is to compile some of your modules with . Using Cython you can convert Python modules into C and compile the C to machine language. PyInstaller can follow import statements that refer to Cython C object modules and bundle them.

executed directly by the Python interpreter
Cython
Decompile compiled python binaries (exe, elf) - Retreive from .pycHackTricks
What PyInstaller Does and How It Does It — PyInstaller 6.10.0 documentation
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uncompyle6PyPI
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GitHub - pyinstxtractor/pyinstxtractor-ng: PyInstaller Extractor Next GenerationGitHub
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