Get Burp Support About
Support Center

Burp Community

See what our users are saying about Burp Suite:

How do I?

 New Post View All

Feature Requests

 New Post View All

Burp Extensions

 New Post View All

Bug Reports

 New Post View All
Support Home
Getting Started

Getting Started with Burp Suite

Getting Started Home
Documentation

Burp Suite Documentation

Take a look at our Documentation section for full details about every Burp Suite tool, function and configuration option.

Full Documentation Contents Burp Projects
Suite Functions Burp Tools
Options Using Burp Suite
Documentation Home
Knowledge Base
Training

Burp Suite Training

Troubleshooting
Extensibility

Burp Extender

Burp Extender lets you extend the functionality of Burp Suite in numerous ways.

Extensions can be written in Java, Python or Ruby.

API documentation Writing your first Burp Suite extension
Sample extensions View community discussions about Extensibility
Burp Extender Home
BApp Store
Release Notes
  1. Support Center
  2. BApp Store
  3. JSON Web Token Attacker

JSON Web Token Attacker

JOSEPH - JavaScript Object Signing and Encryption Pentesting Helper

This extension helps to test applications that use JavaScript Object Signing and Encryption, including JSON Web Tokens.

Features

  • Recognition and marking
  • JWS/JWE editors
  • (Semi-)Automated attacks
    • Bleichenbacher MMA
    • Key Confusion (aka Algorithm Substitution)
    • Signature Exclusion
  • Base64url en-/decoder
  • Easy extensibility of new attacks
Author Dennis Detering
Version 1.0
Rating
Popularity
Last updated 22 November 2017

You can install BApps directly within Burp, via the BApp Store feature in the Burp Extender tool. You can also download them from here, for offline installation into Burp.

Download BApp

Please note that extensions are written by third party users of Burp, and PortSwigger Web Security makes no warranty about their quality or usefulness for any particular purpose.

Go back to BappStore