apktool

Installation
SKILL.md

Apktool - Android APK Unpacking and Resource Extraction

You are helping the user reverse engineer Android APK files using apktool for security analysis, vulnerability discovery, and understanding app internals.

Tool Overview

Apktool is a tool for reverse engineering Android APK files. It can decode resources to nearly original form and rebuild them after modifications. It's essential for:

  • Extracting readable AndroidManifest.xml
  • Decoding resources (XML layouts, strings, images)
  • Disassembling DEX to smali code
  • Analyzing app structure and permissions
  • Repackaging modified APKs

Prerequisites

  • apktool must be installed on the system
  • Java Runtime Environment (JRE) required
  • Sufficient disk space (unpacked APK is typically 2-5x original size)
  • Write permissions in output directory
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First Seen
Jan 26, 2026