apktool

Decode Android APK resources and disassemble smali code for analysis.

811|123|Updated Nov 17, 2025

Search Tags:#resources #manifest #android #apk #apktool #smali

Ready to run

npx skills add https://github.com/BrownFineSecurity/iothackbot --skill apktool

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: apktool
Source: https://github.com/BrownFineSecurity/iothackbot/tree/main/skills/apktool
Command: npx skills add https://github.com/BrownFineSecurity/iothackbot --skill apktool

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Android APKs are packed with resources and compiled code. Apktool allows you to decode resources, inspect the AndroidManifest.xml, and examine smali code to identify security issues and unusual behaviors.

Core Features & Use Cases

Resource Decoding: Rebuilds resources to near-original form for inspection.
Manifest & Smali Analysis: Review permissions, components, and disassembled code.
Selective Decoding: Skip resources or code for faster targeted analysis.

Quick Start

Standard decode: apktool d app.apk -o app-unpacked

Frequently Asked Questions about apktool

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

FAQPage Schema

How do I decode an Android APK to inspect its contents?▼

Decode Android APKs using apktool with the command `apktool d app.apk -o app-unpacked`. This extracts resources, AndroidManifest.xml, and smali code into a readable directory structure for security analysis and reverse engineering.

Can I examine AndroidManifest.xml and app permissions without decompiling the entire APK?▼

Yes. Apktool decodes resources selectively, allowing you to review the AndroidManifest.xml and declared permissions without full code disassembly, enabling faster targeted security audits.

What's the best way to analyze smali code for security vulnerabilities in Android apps?▼

Decode the APK with apktool to extract disassembled smali code, then inspect it for malicious behavior, unusual API calls, and permission misuse. Smali analysis reveals low-level app logic compiled from Java bytecode.

Do I need Java installed to unpack and decode APK files?▼

Yes. Apktool requires a Java Runtime Environment (JRE) to decode APKs, extract resources, and rebuild modified applications. Ensure sufficient disk space and write permissions in your output directory.

Can I repackage and test modified APKs after unpacking them with apktool?▼

Yes. After unpacking and modifying resources or code, apktool can rebuild the APK. You can then sign and verify the modified APK for testing, supporting iterative security analysis and patching workflows.

Why would I skip resource or code decoding during APK analysis?▼

Selective decoding with apktool flags speeds up targeted analysis by skipping unnecessary components. This reduces processing time and disk space when you only need to inspect specific manifest entries or smali code sections.