Open both your entry point file ( main ) and the reference file ( struct.pyc ) in a hex editor like HxD (Windows) or Hex Fiend (Mac).
This tool is the industry standard for unpacking executables created by PyInstaller. It "cracks open" the EXE to reveal the underlying Python files and metadata. Decompilation ( uncompyle6 Once you have the files, you need a decompiler. uncompyle6 is great for older Python versions (up to 3.8). pycdc (C++ Python Bytecode Disassembler) is often better for more recent Python versions (3.10+). 3. Ease of Use Interface:
(C++ Python Bytecode Disassembler): A powerful alternative for newer versions of Python where other decompilers might fail. Step-by-Step Process convert exe to py
: Converting the extracted bytecode ( .pyc ) back into human-readable Python source code ( .py ).
This gives you a behavioral blueprint to rewrite the program. Open both your entry point file ( main
Tools like , Oxyry , or Cython transform bytecode into something that requires a specialized runtime. Decompiling obfuscated code yields gibberish—often a single exec() call with encrypted strings.
Copy the first 12 to 16 bytes (the precise length depends on the specific Python version). Open your broken my_program.pyc file in the hex editor. Decompilation ( uncompyle6 Once you have the files,
Because Python is an interpreted language, compilers like , py2exe , or cx_Freeze do not turn Python code into machine language like C++ does. Instead, they bundle the Python interpreter, your dependencies, and compiled Python bytecode ( .pyc files) inside a compressed archive hidden within the .exe shell.
Download the latest version of pyinstxtractor.py from its official GitHub repository or via trusted script sources. Save pyinstxtractor.py directly inside your decoder folder. Step 3: Run the Extraction Script
The tool will create a new folder (e.g., your_application.exe_extracted ). Inside, you will find the internal contents of the executable, including the core .pyc files. Step 2: Identify the Entry Point
Run the command line tool, passing your bytecode file as the target and redirecting the output to a new Python file: pycdc main.pyc > restored_script.py Use code with caution. Option B: Using Uncompyle6