qi4L/JYso
qi4L/JYso has 1,756 GitHub stars and 195 forks. GitHot measured 0 stars in 24 hours. Last checked 2026-11-08 01:59 UTC. Last push 2026-06-14.
JNDIExploit or a ysoserial.
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README.en.md
Original
JYso
It can be used as a tool for ysoserial and JNDIExploit at the same time, and has the bypass function of multiple JNDI high versions, WAF, and RASP
🚀 Getting Started Guide
📢 Please take a moment to read this document, it will help you quickly get familiar with JYso!
🧐 Use the Documentation Wiki.
✔ Download the latest version of Releases.
👍 Features
- JNDI account password startup
- JNDI route hiding or encryption
- JNDI high version Bypass
- Customize the path, password, HTTP header and value of the memory horse
- Memory horse supports Fileless landing Agent insertion
- Memory horse writes JRE or environment variables to hide
- Serialized data plus dirty data
- Serialized data is encoded in UTF-8 corresponding to 3 bytes
- TemplatesImpl _bytecodes feature eliminated and size reduced
- SignedObject secondary deserialization, can be used to bypass TemplatesImpl blacklist, CC without array and blacklist often seen in CTF, etc.
- Solve the problem of Shiro Header being too long, get the value of the specified parameter from the request for class loading
- Dynamically generate obfuscated class names
- MSF/CS online
- Code execution through JDBC
If you have other great ideas, please let me know! 😎
🐯 Compile
Download gradle8.7+ and configure it in the global environment variable, and execute it in the project root directory
./gradlew shadowJar
🌲Directory structure
For more information, please refer to Directory structure description.
✨ CTStack

JYso has joined the CTStack community
✨ 404Starlink

JYso has joined 404Starlink
📷 Acknowledgements
- https://github.com/veracode-research/rogue-jndi
- https://github.com/welk1n/JNDI-Injection-Exploit
- https://github.com/welk1n/JNDI-Injection-Bypass
- https://github.com/WhiteHSBG/JNDIExploit
- https://github.com/su18/ysoserial
- https://github.com/rebeyond/Behinder
- https://github.com/Whoopsunix/utf-8-overlong-encoding
- https://github.com/mbechler/marshalsec
- https://t.zsxq.com/17LkqCzk8
- https://mp.weixin.qq.com/s/fcuKNfLXiFxWrIYQPq7OCg
- https://xz.aliyun.com/t/11640?time__1311=mqmx0DBDuDnQ340vo4%2BxCwg%3DQai%3DYzaq4D&alichlgref=https%3A%2F%2Fxz.aliyun.com%2Fu%2F8697
- https://archive.conference.hitb.org/hitbsecconf2021sin/sessions/make-jdbc-attacks-brilliant-again/
- https://tttang.com/archive/1405/#toc_0x03-jdbc-rce
- https://xz.aliyun.com/t/10656?time__1311=mq%2BxBDy7G%3DLOD%2FD0DoYg0%3DDR0HG8KeD&alichlgref=https%3A%2F%2Ftttang.com%2F#toc-7
- https://whoopsunix.com/docs/PPPYSO/advance/UTFMIX/
- https://tttang.com/archive/1405/#toc_groovyclassloader
- https://xz.aliyun.com/t/10656?time__1311=mq%2BxBDy7G%3DLOD%2FD0DoY4AKqiKD%3DOQjqx&alichlgref=https%3A%2F%2Ftttang.com%2F
- https://www.leavesongs.com/PENETRATION/use-tls-proxy-to-exploit-ldaps.html
- https://tttang.com/archive/1405/#toc_druid
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