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This Burp extension provides mock responses that can be customized, based on the real ones.

Create a mock by selecting an entry from HTTP History or craft it manually. Requests are matched by customizable regex rules and forwarded to the local mock server. Mocks can have various behavior, including:

  • directly entering the input,
  • reading replies from a file,
  • redirecting to a different URL,
  • calling another process and returning the output.

Using this extension it is possible to test how web frontend and mobile clients react to different responses, without making any changes to the backend.

It differs from intercepting responses mainly in two ways:

  • The original request is not sent to the server anymore
  • It provides a more convenient and comprehensive solution to modifying responses

Demo video, Screen shot 1, Screen shot 2

Author Michal Dardas, Shea Polansky
Version 1.1.3
Last updated 11 July 2019

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.
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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.

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