Over 70% of Python EXEs are built with PyInstaller. The tool pyinstxtractor (Python Archive Extractor) was built for this exact purpose.
Step-by-step:
Inside, you will find several .dll files, a .pyc file for the main script, and subfolders like PYZ-00.pyz_extracted containing the bytecode for all imported modules. convert exe to py
A: Nuitka compiles Python to C, then to machine code. Standard decompilation yields C, not Python. Recovery to Python would be manual and extremely hard.
C:\> python pyinstxtractor.py myapp.exe
C:\> cd myapp.exe_extracted
C:\> uncompyle6 myapp > myapp_decompiled.py
At runtime, Python objects exist in memory. With a memory debugger (Cheat Engine, WinDbg), you can dump strings or loaded modules. Over 70% of Python EXEs are built with PyInstaller
Before we dive into techniques, understand when this process is legal and ethical:
Converting proprietary software without permission may violate copyright laws and software licenses. Inside, you will find several
Even with the right tools, decompilation is not always 100% successful.
The most reliable open-source decompiler for older Python versions (3.8 and below).
pip install uncompyle6
uncompyle6 main.pyc > main.py
Success rate: 70-90% for simple scripts. It struggles with complex control flow (nested loops, try/except blocks).
Attempting to convert an EXE to a PY file touches on intellectual property rights. Most software is protected by copyright laws and End User License Agreements (EULAs) that explicitly prohibit reverse engineering.