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https://github.com/Col-E/Recaf

The modern Java bytecode editor
https://github.com/Col-E/Recaf

agent asm bytecode bytecode-engineering bytecode-manipulation decompile decompiler java java-decompiler javafx javafx-application jvm-bytecode reverse-engineering static-analysis

Last synced: about 1 month ago
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The modern Java bytecode editor

Host: GitHub
URL: https://github.com/Col-E/Recaf
Owner: Col-E
License: mit
Created: 2017-07-27T06:01:10.000Z (almost 7 years ago)
Default Branch: master
Last Pushed: 2024-04-11T22:58:22.000Z (2 months ago)
Last Synced: 2024-04-12T04:28:26.972Z (2 months ago)
Topics: agent, asm, bytecode, bytecode-engineering, bytecode-manipulation, decompile, decompiler, java, java-decompiler, javafx, javafx-application, jvm-bytecode, reverse-engineering, static-analysis
Language: Java
Homepage: https://coley.software/Recaf/
Size: 53 MB
Stars: 5,524
Watchers: 167
Forks: 433
Open Issues: 137
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE

Lists

Awesome-Pentest - Recaf - The modern Java bytecode editor. (Reverse Engineering Tools / Metadata Tools)
AwesomeJavaFX - Recaf - An easy to use modern Java bytecode editor. (Real World Examples)
awesome-hacking-lists - Recaf - The modern Java bytecode editor (Java (504))
awesome - Col-E/Recaf - The modern Java bytecode editor (Java)
awesome-stars - Col-E/Recaf - The modern Java bytecode editor (Java)
awesome-stars - Recaf - E | 4359 | (Java)
awesome-stars - Col-E/Recaf - The modern Java bytecode editor (Java)
awesome-hacking-lists - Recaf - A modern Java bytecode editor (Java)
awesome-hacking-lists - Col-E/Recaf - The modern Java bytecode editor (Java)

README

        # Recaf [![Discord](https://img.shields.io/discord/443258489146572810.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)](https://discord.gg/Bya5HaA) [![Build Status](https://cloud.drone.io/api/badges/Col-E/Recaf/status.svg)](https://cloud.drone.io/Col-E/Recaf) ![downloads](https://img.shields.io/github/downloads/Col-E/Recaf/total.svg) [![Contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](CONTRIBUTING.md)

![screenshot of recaf](docs/screenshots/main-anim.gif)

An easy to use modern Java bytecode editor that abstracts away the complexities of Java programs.

Recaf abstracts away:

* Constant pool

* Stack frames

* Wide instructions

* And more!

Don't know bytecode? That's ok because Recaf supports [recompiling decompiled code](https://col-e.github.io/Recaf-documentation/use-edit-via-decompile.html) and inserting [single line Java statements into the bytecode](https://col-e.github.io/Recaf-documentation/use-assembler.html).

For more information: _[Read the documentation](https://col-e.github.io/Recaf-documentation/)_

## Important notice for newer versions: 3X and 4X

[![](https://img.youtube.com/vi/IIFnXFoiiSo/sddefault.jpg)](https://www.youtube.com/watch?v=IIFnXFoiiSo)

This video explains what's going on in the the Recaf developer space. What's going on with 3x and 4x, and plans for the future.

## Download

See the [releases](https://github.com/Col-E/Recaf/releases) page for the latest build.

## Preface

If you're just getting started with reverse-engineering in Java, read [primer guide](PRIMER.md). Then check the documentation pages.

## Contributing 

**Are you a developer?**

Check out the [open issues](https://github.com/Col-E/Recaf/issues), [project boards](https://github.com/Col-E/Recaf/projects), and many scattered `TODO` messages throughout the source code. There's plenty to do.

**Not a developer?** 

You can help by reporting bugs, making suggestions, providing translations, and sharing this project.

> More information can be found in the [contribution guide](CONTRIBUTING.md).

## Setting up the project

Clone the repository via `git clone https://github.com/Col-E/Recaf.git`

Open the project in an IDE or generate the build with maven.

**IDE**:

  1. Import the project from the `pom.xml`

      * [IntelliJ](https://www.jetbrains.com/help/idea/maven-support.html#maven_import_project_start)

      * [Eclipse](https://stackoverflow.com/a/36242422) - _(Warning: Eclipse's custom compiler cannot compile Recaf because of incorrect generics parsing)_

  2. Create a run configuration with the main class `me.coley.recaf.Recaf`

  

**Without IDE**:

  1. Execute `build`

      * Follow the prompt in the script to build the project.

  2. Run the generated build: `java -jar target/recaf-{version}-jar-with-dependencies.jar`

For additional information, join the [Discord server _(https://discord.gg/Bya5HaA)_](https://discord.gg/Bya5HaA)