Flutter / Mobile App API Reverse Engineering

A systematic methodology for reverse engineering mobile app APIs, from APK analysis through to a fully standalone Python API client. Developed and battle-tested on production Flutter apps with Kiwi SDK encryption, X25519 key exchange, and AES response encryption.

When to Use

• Reverse engineering any Flutter or native Android app's API
• Intercepting HTTPS traffic that resists standard MITM proxies (certificate pinning, local proxies)
• Extracting auth tokens (JWT, session tokens) from running apps
• Analyzing crypto implementations in stripped native libraries
• Creating standalone API clients that bypass app-level encryption

Prerequisites