Damn Vulnerable Bank Android Application aims to provide an interface for everyone to get a detailed understanding with internals and security aspects of android application.
- Clone the repository and run the Backend Server as per instructions in the link.
- We have released the Apk so after downloading install it via adb or manual.
- After Installation open the App and add Backend IP in Homescreen
- Test running status by pressing health check
- Now create an account by signup option and then login with your credentials
- Now you can see the dashboard and perform banking operations
- Login as admin to approve beneficiary
- The database is pre-populated with a few users for quick exploration.
| Username | Password | Account Number | Beneficiaries | Admin privileges |
|---|---|---|---|---|
| user1 | password1 | 111111 | 222222, 333333, 444444 | No |
| user2 | password2 | 222222 | None | No |
| user3 | password3 | 333333 | None | No |
| user4 | password4 | 444444 | None | No |
| admin | admin | 999999 | None | Yes |
- Sign up
- Login
- My profile interface
- Change password
- Settings interface to update backend URL
- Add fingerprint check before transferring/viewing funds
- Add pin check before transferring/viewing funds
- View balance
- Transfer money
- Via manual entry
- Via QR scan
- Add beneficiary
- Delete beneficiary
- View beneficiary
- View transactions history
- Download transactions history
- Go to Build options and select Generate Signed Bundled/Apk
- Then select Apk as option and click next
- Now we need a keystore to sign an apk
- Create a new keystore and remember its password
- After creating select that keystore and enter password
- Now select Build variant as Release and signature version as V2
- Now we can build the apk successfully
To keep things crisp and interesting, we hidden this section. Do not toggle this button if you want a fun and challenging experience. Try to explore the application, find all the possible vulnerabilities and then cross check your findings with this list.
Spoiler Alert
- Root and emulator detection
- Anti-debugging checks (prevents hooking with frida, jdb, etc)
- SSL pinning - pin the certificate/public key
- Obfuscate the entire code
- Encrypt all requests and responses
- Hardcoded sensitive information
- Logcat leakage
- Insecure storage (saved credit card numbers maybe)
- Exported activities
- JWT token
- Webview integration
- Deep links
- IDOR
- Add profile and change-password routes
- Create different secrets for admin and other users
- Add dynamic generation of secrets to verify JWT tokens
- Introduce bug in jwt verification
- Find a way to store database and mount it while using docker
- Dockerize environment
Thanks to these amazing people
| Rewanth Cool (Rest API) | Github | |
| Hrushikesh Kakade (Android App) | Github | |
| Akshansh Jaiswal (Android App) | Github |