Exploiting Deep Link Vulnerabilities
When to Use
Use this skill when:
- Assessing mobile app deep link handling for injection and redirect vulnerabilities
- Testing Android intent filters and iOS URL scheme handlers for unauthorized access
- Evaluating App Links (Android) and Universal Links (iOS) verification
- Testing for link hijacking via competing app registrations
Do not use without authorization -- deep link exploitation can trigger unintended actions in target applications.
Prerequisites
- Android device with ADB or iOS device with Objection/Frida
- APK decompiled with apktool or JADX for AndroidManifest.xml analysis
- Knowledge of target app's registered URL schemes and intent filters
- Drozer for Android intent testing
- Burp Suite for intercepting deep link-triggered API calls
Workflow
Step 1: Enumerate Deep Link Entry Points
Android - Extract from AndroidManifest.xml:
# Decompile APK
apktool d target.apk -o decompiled/
# Search for intent filters with deep link schemes
grep -A 10 "android.intent.action.VIEW" decompiled/AndroidManifest.xml
# Look for:
# <data android:scheme="myapp" android:host="action" />
# <data android:scheme="…