Mobile App Security Testing

Job ID: 39558219

Budget: $250 – $750 USD

I'm looking for a skilled penetration tester to assess the security of a Chinese-language Mahjong mobile app, provided as an Android APK. The primary focus should be on identifying API security vulnerabilities, especially around authentication.

Key Areas to Test:
- API weaknesses (especially in authentication)
- App decompilation (looking for leaked keys or insecure logic)
- Potential for cheating or balance tampering
- User privacy and data leakage

Requirements:
- Experience in mobile app penetration testing
- Familiarity with Android security
- Ability to read and understand Chinese UI is a plus but not mandatory

Deliverables:
- A detailed written report with findings and proof of concept (PoC)
- Optional recommendations for patching vulnerabilities

The budget is flexible and can go up to $900 depending on experience.