- Platform: Android
- Weakness: MASWE-0058
- Weakness in the numbering of the MASWE beta: MASWE-0107
- Profiles: R (resilience)
- Type: dynamic, hooks
- Knowledge: MASTG-KNOW-0030, MASTG-KNOW-0032, MASTG-KNOW-0118
- Best practices: MASTG-BEST-0041
Overview
This test verifies whether the app detects and responds to instrumentation and hooking attempts at runtime. For example, if the app does not terminate immediately when the following methods are called:
- Authentication tokens, OAuth tokens, session credentials, and stored account passwords could be extracted if
AccountManager.getPassword(),AccountManager.getAuthToken()are hooked. - Cryptographic keys and certificates could be extracted if
KeyStore.getKey(),KeyStore.getCertificate()are hooked. - Ephemeral/Session Keys could be extracted if
Cipher.doFinal()is hooked. - Database contents could be extracted if
SQLiteDatabase.rawQuery(),SQLiteDatabase.query(),SQLiteDatabase.execSQL()are hooked. - Encrypted data could be extracted if
EncryptedSharedPreferencesAPIs are hooked. - Authentication could be bypassed if
KeyGenParameterSpec.Builder.setUserAuthenticationRequired()is hooked. - Any other function that processes or returns sensitive data is hooked.
Warning
This list is just indicative, and each app may have its own defensive response mechanisms.
Steps
- Use MASTG-TECH-0005 to install the app.
- Use MASTG-TECH-0043 to hook the relevant API calls.
- Exercise the app extensively to trigger as many flows as possible and enter sensitive data wherever you can.
Observation
The output should contain one of the following:
- The expected hook callback data (e.g., function arguments, return values).
- Session termination, script errors, empty responses, or absence of expected hook data.
Evaluation
The test case fails if the hook executes successfully and returns the expected data, indicating the app lacks runtime integrity verification.
The test case passes if the hooking attempt fails due to the app's defensive response (e.g., session terminates unexpectedly, hook callbacks never execute, or the process exits).
Note
Even if the test case passes, it might still be possible to bypass the app's defensive response. MASTG-KNOW-0030 and MASTG-KNOW-0032 describe such challenges.
Συνδεδεμένα ζητήματα
| Τύπος σύνδεσης | Ζήτημα |
|---|---|
| is related to | MASTG-BEST-0041 Hardening Against Runtime Hooking (Android) |
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