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Proxy interception - modifying request

Brubs | Last updated: Mar 16, 2022 05:47PM UTC

Hi, I'm writing a java extension to encrypt the body of the request, the idea is that the encryption is done only after I make some modification to the request. For example, I let the proxy with "Intercept on", I modify the request (such as: changing the value of a parameter), and then the extension, will get the modified request, encrypt it and send it to the server. I would like to know if this is possible using an "IInterceptedProxyMessage" interface, or some other API. The chain of events would be like this: 1- Request comes in clear-text; 2- With "intercepted is on" the request is modified by me; 3 - After the modification, the extension takes the request and then do the encryption stuff; 4 - The request is sent to the server. Every help is welcome. Thanks

Hannah, PortSwigger Agent | Last updated: Mar 21, 2022 03:21PM UTC