https://github.com/eikendev/java-decompiler
A Docker image with four popular Java decompilers in one place (CFR, Fernflower, Krakatau, and Procyon) :rocket::hammer:
https://github.com/eikendev/java-decompiler
apk-decompiler cfr docker-image fernflower jar-decompiler java-decompiler krakatau procyon reverse-engineering
Last synced: about 1 month ago
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A Docker image with four popular Java decompilers in one place (CFR, Fernflower, Krakatau, and Procyon) :rocket::hammer:
- Host: GitHub
- URL: https://github.com/eikendev/java-decompiler
- Owner: eikendev
- License: isc
- Created: 2021-02-25T22:54:16.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2022-04-28T18:59:13.000Z (about 3 years ago)
- Last Synced: 2025-04-19T13:46:33.514Z (about 2 months ago)
- Topics: apk-decompiler, cfr, docker-image, fernflower, jar-decompiler, java-decompiler, krakatau, procyon, reverse-engineering
- Language: Dockerfile
- Homepage: https://www.eiken.dev/blog/2021/02/how-to-break-your-jar-in-2021-decompilation-guide-for-jars-and-apks/
- Size: 18.6 KB
- Stars: 72
- Watchers: 3
- Forks: 10
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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- awesome-hacking-lists - eikendev/java-decompiler - A Docker image with four popular Java decompilers in one place (CFR, Fernflower, Krakatau, and Procyon) :rocket::hammer: (Dockerfile)
README
Java Decompiler
Have your decompilers ready when you need them most.
Java Decompiler combines the strength of four popular Java decompilers.
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## 📄 Usage
First, create a directory `./infiles` that contains all your JAR and APK files you want to decompile.
Then, in case the targeted files depend on any external library, put a copy of these libraries in JAR format into a directory `./libfiles`.
Some decompilers depend on this to work properly.
Next, prepare an empty directory `./outfiles`, which is where the output of the decompilers will be written to.
Lastly, run the Docker image via the following command.
```bash
docker run \
-ti \
--rm \
-v "$PWD/infiles:/infiles:Z,ro" \
-v "$PWD/libfiles:/libfiles:Z,ro" \
-v "$PWD/outfiles:/outfiles:Z,rw" \
ghcr.io/eikendev/java-decompiler:latest
```
If you want to use [Podman](https://podman.io/), simply switch `docker` to `podman` at the start of the command.
## 💡 Background
This Docker image is equipped with four Java decompilers:
- [CFR](https://www.benf.org/other/cfr/)
- [Fernflower](https://github.com/JetBrains/intellij-community/tree/master/plugins/java-decompiler/engine)
- [Krakatau](https://github.com/Storyyeller/Krakatau)
- [Procyon](https://github.com/mstrobel/procyon)
It also includes [Enjarify](https://github.com/Storyyeller/enjarify) and [jadx](https://github.com/skylot/jadx) for the decompilation of APK files.
For more information on all these tools, check out [my related blog post](https://eiken.dev/blog/2021/02/how-to-break-your-jar-in-2021-decompilation-guide-for-jars-and-apks/).