I will reverse engineer your android app API and deliver a documented client


About this gig
If your mobile app has no public API, I capture it.
Rooted Android emulator, mitmproxy with the CA injected into the Android 14+ trust store, QUIC/HTTP-3 blocked so every request shows up, Frida for certificate pinning, WebSocket capture for real-time protocols (SendBird, Ably), HMAC/token signing reproduced.
Deliverables:
- Endpoint inventory with headers, auth flow and signing
- - A working client script (Node.js or Python) that reproduces the calls
- - A written protocol doc your team can extend
Recent work: car-marketplace chat over SendBird WebSocket + Cognito, HMAC-signed listing API, a pure-API booking client that fires at an exact second.
I only work on apps you own or where you have the right to interoperate. No payment, DRM or anti-cheat bypass.
Send me the app (APK or store link) and what you need from it. Feasibility answer within 24 h.
Get to know FiJoEz
Web scraping and anti bot engineer, Nodejs, Playwright, Python
- FromParaguay
- Member sinceDec 2021
- Last delivery11 months
Languages
English, Spanish
My Portfolio
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FAQ
What do you need from me?
The APK or store link, a test account if the app needs login, and the list of actions you want reproduced.
Can you bypass certificate pinning?
Yes, with Frida on a rooted emulator, for interoperability on apps you have rights to.
Which language is the client in?
Node.js or Python, your choice; Docker optional.
Do you handle real-time chat or WebSocket protocols?
Yes (SendBird, Ably, custom WS), in the Premium package.
