2. APKTool

Description:
APKTool is a decompiler used for decompiling, modifying, and re-packaging Android APK files. It allows penetration testers to analyze app structure, examine source code, and modify Android apps.

Examples:

• 1. Decompile APK:
     • apktool d app.apk -o output_folder

Explanation: Decompiles the APK file (app.apk) and saves the output to the folder output_folder.

• 1. Rebuild APK:
     • apktool b output_folder -o modified_app.apk

Explanation: Rebuilds the modified source files into a new APK (modified_app.apk) for further analysis or testing.