> For the complete documentation index, see [llms.txt](https://zero-day-archives.gitbook.io/zero-day-archives/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zero-day-archives.gitbook.io/zero-day-archives/password-attacks-1/password-attacks/john-the-ripper.md).

# John The Ripper

### **What is John the Ripper?**

John the Ripper (often referred to simply as "John") is one of the most popular password-cracking tools in the cybersecurity field. It is designed to crack password hashes using several algorithms and cracking methods such as dictionary-based attacks, brute force, and hybrid attacks. John supports a wide range of hash types, including DES, MD5, SHA-1, and more.