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vuln-bank-mobile — A deliberately vulnerable mobile banking application designed for practicing mobile security testing. Features common vulnerabilities found in real-world applications, making it an ideal platform for security professionals, developers, and enthusiasts to learn mobile penetration testing.. | Kitploit
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A deliberately vulnerable mobile banking application designed for practicing mobile security testing. Features common vulnerabilities found in real-world applications, making it an ideal platform for security professionals, developers, and enthusiasts to learn mobile penetration testing..

Learning & Education
Labs & Practice
GitHubcommando-x/vuln-bank-mobile

vuln-bank-mobile

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100431 year agoReviewed by Kitploit
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💳 Vulnerable Bank Mobile App

logo

Vulnerable Bank is an intentionally insecure mobile application built for security engineers, penetration testers, and mobile app security learners to practice and demonstrate real-world exploitation of insecure coding practices.

This mobile app acts as a frontend for the Vulnerable Bank API, a purposely vulnerable web API with typical banking features.


📥 Download and Run Instantly (Recommended)

🆕 You can now download the compiled .apk directly from GitHub Releases.

  • 📦 Download Latest APK
  • ⚠️ Enable Install Unknown Apps on your Android device
  • 🚫 No need to build anything — just install and start testing!

This APK includes all vulnerable features, static secrets, and works offline with your own hosted API server.


📲 Features

  • 🔓 Insecure login with hardcoded credentials
  • 🔍 Debug API endpoint exposed in the APK
  • 🛑 Plaintext storage of credentials and balance in SharedPreferences
  • 🔑 Hardcoded JWT tokens in source code
  • 🔒 OWASP Mobile Top 10 Vulnerabilities including:
    • M1: Improper Platform Usage
    • M2: Insecure Data Storage
    • M4: Insecure Authentication
    • M5: Insufficient Cryptography
    • M9: Reverse Engineering
  • 💾 Static secrets exposed in AndroidManifest.xml
  • 📱 Emulates a realistic banking app with:
    • Balance check
    • Money transfer
    • Transaction history
    • Loans
    • Virtual cards
    • Admin-only hidden panel

🧪 Who Is It For?

Security professionals, students, and educators who want to:

  • Practice Android security testing (JADX, Frida, MobSF, Burp Suite, etc.)
  • Demonstrate OWASP Mobile Top 10 risks
  • Build or demo mobile DevSecOps pipelines
  • Run Capture-the-Flag (CTF) scenarios or internal red team labs

🚧 Build It Yourself (Optional)

🧱 Requirements

  • Node.js v18+
  • Android Studio (with emulator or physical device)
  • Java JDK 11+
  • Git

📦 Installation

root@kitploit:~
git clone https://github.com/Commando-X/vuln-bank-mobile
cd vuln-bank-mobile
npm install

Start Metro server:

root@kitploit:~
npx react-native start

In another terminal:

root@kitploit:~
npx react-native run-android

⚠️ If testing on a real device, make sure to:

  • Update API_BASE in App.tsx with your server’s IP
  • Allow HTTP traffic by setting android:usesCleartextTraffic="true" in your manifest

🧠 Fun Security Challenges Inside

  • Can you extract the admin JWT?
  • Can you discover the debug API and access hidden user data?
  • Can you reverse engineer the APK and find credentials in SharedPreferences?
  • Can you tamper with API requests?

🧑‍💻 Dev Notes

  • Written in React Native (TypeScript)
  • Icons from react-native-vector-icons
  • Emulator-friendly, but can be bundled for real Android devices
  • Secrets deliberately placed in:
    • Java/Kotlin source code
    • SharedPreferences
    • AndroidManifest.xml

🛡 Disclaimer

This app is intended strictly for educational purposes.
Do NOT install this app on real production devices or use with real financial data.
All API endpoints are intentionally insecure and should only be used in isolated testing environments.


📸 Screenshots

image image image


👨‍🎓 Author

Badmus Al-Amir
Security Engineer • API Security Advocate • Mobile AppSec Educator
LinkedIn • GitHub


📂 Related Projects

  • 💻 Vulnerable Bank API (Flask)
  • 📱 Android Static/Dynamic Testing Scripts (Frida, MobSF, etc)

🏁 License

MIT — use it, break it, teach with it 🧠

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