reverse engineering a python application built using pyinstaller

Disclaimer: this blog post is meant strictly for educational and ethical security research. Do not reverse engineer software without permission. 🧠 introduction reverse engineering python applications can be fascinating, especially when they’re bundled into .exe files using tools like pyinstaller. In this post, I’ll walk you through how I deconstructed a windows executable (app.exe), identified it as a pyinstaller package, and recovered the original app.py source code. 🔍 step 1: passive recon I started with no source just a single app.exe binary. ...

June 30, 2025 · 4 min · mohdsahlpa