Jadx Ai MCP

JADX is a powerful decompilation tool for Android Dex and Apk files. It supports converting Dalvik bytecode into Java source code, decoding resource files, and restoring code obfuscation. It provides two operation modes: command-line and graphical interface, and is suitable for developers and security researchers.

Developer tools Security #Decompilation tool #Android reverse engineering #Code restoration #Resource decoding .Java

rating : 3.5 points

downloads : 250

update time : 2025-04-28

What is JADX?

JADX is an open-source Android application decompilation tool that can convert Android binary files such as APK, DEX, and AAR into readable Java source code. It provides both a command-line tool and a graphical interface, and supports resource file decoding and code deobfuscation.

How to use JADX?

After downloading, extract the zip file and enter the bin directory to run the corresponding version: - jadx (Command-line version) - jadx-gui (Graphical interface version) Windows users can directly double-click the .bat file to run.

Applicable scenarios

Suitable for scenarios such as Android application reverse analysis, security auditing, and code research. It is especially suitable for developers and security researchers who need to view or modify the compiled Android application code.

Main features

Multi-format supportSupports decompilation of multiple Android file formats such as APK, DEX, AAR, and AAB

Resource decodingCan decode resources in AndroidManifest.xml and other resources.arsc

Deobfuscation functionBuilt-in deobfuscator can handle obfuscated code

Graphical interface functionsProvides convenient functions such as syntax highlighting, jump to declaration, find references, and full-text search

Smali debuggerSupports Smali code debugging to help in-depth analysis of application logic

Advantages and limitations

Advantages

Open-source and free, can be freely used and modified

Provides both command-line and graphical interface versions

Supports multiple Android file formats

Built-in deobfuscation function

Continuously maintained and updated

Limitations

Cannot perfectly decompile all code 100%

Limited ability to handle complex obfuscation

Requires Java 11+ runtime environment

Large projects may require a long processing time

How to use

Download and install

Download the latest version from GitHub Releases or install through the package manager

Run the tool

After extraction, enter the bin directory to run the corresponding version

Open a file

Select the APK or DEX file to be decompiled in the graphical interface

View the results

Browse the decompiled Java code and resource files

Usage examples

Basic decompilationDecompile an APK file to a specified directory

Enable deobfuscationDecompile an obfuscated APK and attempt deobfuscation

Multi-threaded processingUse 8 threads to accelerate the decompilation of a large APK

Frequently Asked Questions

Why is the decompiled code incomplete or has errors?

How to improve the decompilation success rate?

What should I do if an error occurs when running on Windows?

How to build JADX from the source code?

Related resources

GitHub repository

Project source code and latest version

Question and answer

Solutions to common problems

GUI feature overview

Demonstration of graphical interface features

Contribution guide

How to participate in project development

🚀 Jadx Command-line Tool

Jadx is a command-line tool for decompiling Android APK, DEX, JAR, and CLASS files. It provides a wide range of options to customize the decompilation process.

🚀 Quick Start

usage: jadx [options] <input>
The input can be a .dex, .apk, .jar, .class file, or a directory.

✨ Features

Comprehensive Input Support: Supports various input file types including .dex, .apk, .jar, .class, and directories.
Customizable Output: Allows specifying output directories, packing outputs into JAR files, and more.
Multiple Optimization Options: Offers options to skip unknown files, merge class files, and disable certain features.
Parallel Decompilation: Supports multi-threaded decompilation for improved efficiency.

📦 Installation

The README does not provide installation steps, so this section is skipped.

💻 Usage Examples

Basic Usage

# Decompile an APK file
jadx -d out --source-only --no-gpl input.apk

# Decompile a DEX file in multi-threaded mode
jadx -p -o output.jar /path/to/dex

# Parse a DEX file and disable optimization
jadx --parse-only --no-optimize --api-level 28 input.dex

📚 Documentation

Command-line Options

Options:
  -b, --no-color         Disable colored output
  -d, --output-dir <dir> Specify the output directory, default is 'out'
  -e, --skip-unknown     Skip unknown files (only for APK)
  -f, --force            Force overwrite existing files
  -h, --help             Display help information
  -i, --info             Display input file information
  -j, --jar              Package the output as a jar file
  -k, --no-gpl           Disable GPL classes (only for Pro version)
  -m, --merge            Merge class files (only for APK and JAR)
  -o, --stdout           Output to standard output
  -p, --parallel         Use multi-threading for decompilation
  -q, --quiet            Suppress progress bar and warning messages
  -r, --no-resolve       Disable renaming function
  -s, --source-only      Decompile only source files (only for JAR)
  -t, --timestamp        Display decompilation timestamp
  -v, --version          Display jadx version
  -w, --wait             Wait for user confirmation before continuing (press Enter to continue)
  -x, --split            Split output files by package

Decompilation Options:
  --encrypt-strings      Encrypt string constants (only for Pro version)
  --renames-file <file>  Use a renaming mapping file
  --no-class-renames     Disable class renaming function
  --no-simplification    Disable code simplification

Debug Options:
  -g, --debug            Enable debug mode
  -I, --incremental      Enable incremental decompilation
  --dump-classes         Display all loaded classes
  --trace                Trace the decompilation process of specified classes

DEX Parsing Options:
  --parse-only           Only parse DEX files without decompilation
  --no-optimize          Disable optimization function
  --no-verify            Do not verify dex file checksums (only for Pro version)
  --api-level <level>    Specify Android API level, default is 27

Other Options:
  -c, --config <file>    Use a specified configuration file
  -l, --license          Display license information

Plugin Options (-P=)

dex-input: Load .dex and .apk files
- dex-input.verify-checksum: Verify dex file checksums, default is yes
java-convert: Convert .class, .jar, and .aar files to dex
- java-convert.mode: Conversion mode, values are [dx, d8, both], default is both
- java-convert.d8-desugar: Use d8's desugar feature, default is no
java-deobfuscate: Remove obfuscation information (only for Pro version)
- java-deobfuscate.map-file: Specify a decompilation mapping file
no-resource-deobfuscate: Disable resource deobfuscation
resources-only: Decompile only resource files