Deep-C

Deep-C is an Android Deep Link Exploitation Framework that automatically decompiles APKs, identifies exposed and insecure deep link entry points, validates exploitability using static analysis and optional AI verification, and generates executable adb Proof-of-Concepts (PoCs).

Deep-C is designed for mobile application penetration testing, red team assessments, and Android security research, with a strong focus on real-world exploitability rather than noisy findings.

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✨ Features

📦 APK Analysis

• Automatic APK decompilation using apktool
• Bytecode processing using dex2jar
• Java source recovery using jadx

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🔍 Deep Link Discovery

• Custom scheme deep links
• App links (http / https)
• Exported and browsable activities
• Intent filter analysis (VIEW + BROWSABLE)

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🚪 Exported Component Detection

• Exported activity identification
• Deep link entry-point enumeration
• Custom scheme reachability analysis

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🌐 WebView Abuse Identification

• Detection of attacker-controlled data reaching WebView.loadUrl
• Identification of unsafe URL handling
• Java & Kotlin (jadx-decompiled) code support

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⚠️ Insecure Deep Link Pattern Detection

• Missing or improper host validation
• Weak validation logic (endsWith, contains, regex)
• Unsafe custom scheme handling
• Sensitive paths:
  • login
  • reset
  • wallet
  • payment
  • admin / privileged flows

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🎯 Attack Mapping

• Intent hijacking
• Open redirects
• Authentication bypass via deep links
• WebView URL injection
• Arbitrary URL loading

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🤖 AI-Assisted Vulnerability Verification (Optional)

• Optional ChatGPT-based AI review (--ai-review)
• AI acts as a second-pass security reviewer
• Confirms exploitability based on:
  • Decompiled source code
  • Intent data flow
  • Validation logic
• Reduces false positives
• AI never invents findings — it only validates existing ones
• AI verdict is merged safely with static confidence

AI integration is opt-in and disabled by default.

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🧪 Proof-of-Concept (PoC) Generation

• Scheme-aware PoC generation
• Custom scheme handling
• Multiple payload variants:
  • external URLs
  • javascript: payloads
• Executable adb commands
• Optional auto-execution of PoCs

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📤 Output & Reporting

• Clear, human-readable console output
• Structured JSON result file
• Includes:
  • Static confidence
  • AI confidence (if enabled)
  • Final merged confidence
  • Reasoning
  • Generated PoCs

How Deep-C Works

🔄 High-Level Workflow

APK
 ↓
Decompile APK (apktool)
 ↓
Extract Manifest & Bytecode
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Identify Exported Deep Link Entry Points
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Decompile Source (dex2jar + jadx)
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Validate Exploitability (code / heuristics)
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(Optional) AI Verification (--ai-review)
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Generate adb PoCs
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Console Output + JSON Report

🔧 Requirements

Make sure the following tools are installed and available in your PATH:

Python 3.8+ apktool adb (Android Platform Tools) d2j-dex2jar openai

Verify Installation apktool --version adb version python3 --version

For AI Based analysis (openAI)

Export your openAI API key to the enviornment variables

export OPENAI_API_KEY="Your_openai_API_key"

Usage

🔍 Analyze APK (No Exploitation) python deepc.py -a target.apk

💥 Analyze + Execute PoCs via adb python deepc.py -a target.apk --exec

⚠️ Ensure a device/emulator is connected via adb before using --exec.