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performing-dynamic-analysis-of-android-app

Performs runtime dynamic analysis of Android apps using Frida, Objection, and ADB.

954|172|Updated Mar 13, 2026
Search Tags:#penetration testing#android#mobile security#dynamic analysis#Frida#Objection#runtime hooking
One-click install
npx skills add https://github.com/xalgord/xalgorix --skill performing-dynamic-analysis-of-android-app
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: performing-dynamic-analysis-of-android-app
Source: https://github.com/xalgord/xalgorix/tree/main/internal/tools/skills/data/mobile-security/performing-dynamic-analysis-of-android-app
Command: npx skills add https://github.com/xalgord/xalgorix --skill performing-dynamic-analysis-of-android-app

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires frida-tools, objection.

What problem does it solve?

Static analysis alone cannot reveal how an Android app behaves at runtime, especially when the app is obfuscated, uses multi-DEX loading, or decrypts data only during execution. This Skill guides runtime instrumentation to observe real API calls, intercept sensitive methods, and uncover vulnerabilities that static review misses.

Core Features & Use Cases

  • Runtime Method Hooking: Intercept and dump arguments and return values of sensitive classes such as javax.crypto.Cipher, OkHttpClient, and custom authentication managers using Frida and Objection.
  • Protection Bypass Testing: Test and bypass root detection (RootBeer, file-based checks), anti-Frida detection, and tamper checks to validate client-side security controls.
  • Secret and Data Extraction: Dump Android Keystore entries, search the heap for live objects, and scan memory for strings like passwords and API keys.
  • Use Case: A penetration tester assessing an obfuscated banking app attaches Objection, hooks the login and crypto classes, bypasses root detection, and captures decrypted traffic to confirm whether sensitive data is exposed at runtime.

Quick Start

Set up a rooted Android device with Frida server, then ask the AI to dynamically analyze the target app by hooking its authentication and crypto methods with Frida and Objection.

Frequently Asked Questions about performing-dynamic-analysis-of-android-app

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I perform dynamic analysis of an Android app with Frida?▼

Install a Frida server matching your device architecture on a rooted device, start it via ADB, then attach with frida-ps -U or Objection. From there you can list classes, hook methods, and run custom JavaScript instrumentation scripts.

How to hook Android methods and dump arguments using Objection?▼

Use the command android hooking watch class_method followed by the fully qualified class and method name, with flags like --dump-args and --dump-return. For obfuscated apps, first run android hooking search classes to find the real runtime names.

Frida vs Objection for Android security testing?▼

Objection is a higher-level wrapper built on Frida that provides ready-made commands for common tasks like keystore dumps and root bypass. Frida itself is used for custom JavaScript instrumentation when you need fine-grained control over hooks.

Why does Frida fail to connect to my Android device?▼

Connection failures are usually caused by a version mismatch between the Frida server on the device and frida-tools on the host, or by anti-Frida detection in the app. Verify with frida-ps -U and consider Gadget injection or a renamed server.

Can dynamic analysis bypass Android root detection?▼

Yes, by hooking root-check implementations such as RootBeer's isRooted method and file-existence checks for su binaries so they return false. Always confirm the app actually proceeds after the bypass rather than only logging it.

When should I not use runtime instrumentation on Android apps?▼

Avoid dynamic instrumentation on production environments without authorization, since it alters app behavior and can trigger security alerts. It also requires a rooted device or emulator and may be blocked by strong anti-tamper protections.

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