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Apktool

Checked
brownfinesecurity·vlatest·backend·MIT

Apktool decodes Android application files (APK) to reveal their raw resources and code, aiding reverse engineering and analysis.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add brownfinesecurity/iothackbot --skill apktool -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

brownfinesecurity

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned brownfinesecurity/iothackbot at d443c408a9.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
d443c408a9
Manifest
skills/apktool/SKILL.md
Scanned
1 file, 434 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

Apktool allows AI agents to decompile Android APK files into a readable directory structure containing source code and resources. It enables the inspection, modification, and recompilation of applications by translating binary data back into Java or Kotlin source files.

When to use it

  • Analyzing third-party Android apps to understand their logic without needing the original source code.
  • Modifying existing applications to add custom features or remove unwanted functionality before recompiling.
  • Extracting assets, strings, and layouts from an APK for security auditing or forensic analysis.
  • Preparing modified application packages for installation on rooted devices or emulators.

Key capabilities

  • Decompiles Android APKs into a human-readable directory structure.
  • Converts binary resources back into Java/Kotlin source code.
  • Extracts and manipulates app assets, strings, and XML layouts.
  • Supports recompiling modified directories back into installable APK files.

Example prompts

  • "Use apktool to decompile the provided Android application and extract all hardcoded API keys from the string resources."
  • "Modify the main activity layout in this APK to change the background color, then recompile it using apktool."
  • "Analyze the decompiled source code of this banking app to identify potential security vulnerabilities in the login function."

Tips & gotchas

  • Apktool requires a Java Development Kit (JDK) to be installed on the system before execution.
  • Decompiled code may not perfectly reconstruct complex binary resources, requiring manual verification after recompilation.