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

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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
  1. Support Center
  2. BApp Store
  3. EsPReSSO


This extension processes and recognizes single sign-on protocols.


Supported Protocols:

  • SAML
  • OpenID
  • OAuth
  • BrowserId
  • OpenID Connect
  • Facebook Connect
  • Microsoft Account


  • WS-Attacker integration while intercepting SAML messages
  • DTD-Attacker integration while intercepting SAML messages


  • Syntax Highlight
  • Highlight SSO messages in proxy window and display the protocol type
  • Show all recognized SSO messages in a history tab
  • Context menu for 'Analyze SSO Protocol'


  • View and edit SAML
  • View JSON and JSON Web Token (JWT)
Author Tim Guenther, Christian Mainka and Vladislav Mladenov
Version 3.0
Last updated 06 June 2018

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.

You can view the source code for this BApp by visiting our GitHub page.
Follow @BApp_Store on Twitter to receive notifications of all BApp releases and updates.
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