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Burp Suite Extension - Trigger actions and reshape HTTP request/response and WebSocket traffic using configurable rules

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Reshaper for Burp

Extension for Burp Suite to trigger actions and reshape HTTP request/response and WebSocket traffic using configurable Rules

Screenshot

Example Usage

Rules

Rules allow you to set actions to perform (called Thens) if messages/connections (event) received by Burp Suite meet certain criteria (called Whens). Rules are processed in order.

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Whens

Content Type - If the HTTP request body is reported to match specified content types

Event Direction - If the HTTP message is a Request or Response, or if the WebSocket message is directed toward the client or server

From Tool - If the HTTP/WebSocket message is from a specific Burp tool

Has Entity - If the HTTP/WebSocket event contains a certain message value entity

In Scope - If the URL is in the suite-wide scope

Matches Text - If a value (text, variable, or HTTP/WebSocket message value entity) matches a value

Message Type - If the WebSocket message is text or binary

MIME Type - If the HTTP response body is reported to match specified MIME types

Proxy Name - If received by a certain Burp proxy listener

Repeat - Repeat a group of When constraints for each item in a list

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Thens

Break - Stop Rules or then action processing

Build HTTP Message - Build an HTTP request or response message and store the full text in a variable

Comment - Add a comment to the line item in the HTTP/WebSocket history

Delay - Delay further processing/sending of the HTTP/WebSocket event

Delete Value - Remove an HTTP message entity

Delete Variable - Delete a variable

Drop - Have Burp drop the connection

Evaluate - Perform operations on values

Extract - Extract values into lists

Generate - Generate a value

Highlight - Highlight the line item in the HTTP/WebSocket history

Intercept - Intercept the message in the Proxy interceptor

Log - Log message to the Burp extension console

Parse HTTP Message - Extract values from an HTTP request or response message and store the values in variable

Prompt - Get text via a prompt dialog

Read File - Read a file

Repeat - Repeat a group of Then actions by count, boolean value, or for each item in a list

Run Process - Execute a command in a separate process

Run Rules - Run a specific Rule or all auto-run Rules

Run Script - Execute a JavaScript script

Save File - Save text to a file

Send Message - Send a separate WebSocket message

Send Request - Send a separate HTTP request

Send To - Send data to other Burp tools or the system's default browser

Set Encoding - Set the encoding used to read and write bytes of the HTTP request or response body, or WebSocket message

Set Event Direction - Change whether to send a request or to send a response at the end of processing

Set Value - Set the value of an HTTP/WebSocket event using another value (text, variable, or HTTP/WebSocket event entity)

Set Variable - Set a variable using another value (text, variable, or HTTP/WebSocket event entity)

Transform - Transform/convert a value

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Variables

Share values across different Rules while processing the same event or all events.

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Additional Features

Additional Features

Development

Build JAR with IntelliJ

  1. Open IntelliJ.
  2. Create a new project (Gradle) from existing source using Java 21.
  3. Once the project is created/open, wait for IntelliJ to process Gradle dependencies.
  4. Run the jar Gradle build task under the extension module from the Gradle tool window/sidebar. The JAR will be placed in the extension/build/libs directory.

Build JAR with CLI

  1. Install Java 21.
  2. Install Gradle v8.6.
  3. Open a terminal into the extension directory of the project.
  4. Run the gradle --refresh-dependencies build jar command.
  5. The JAR will be placed in the extension/build/libs directory.

Debugging

IntelliJ

  1. Set the environment variable BURP_JAR_PATH to the burpsuite_community.jar file location. (e.g. C:\Users\<user>\AppData\Local\Programs\BurpSuiteCommunity\burpsuite_community.jar on Windows)
  2. In Reshaper, using the Settings tab, export all Rules and global variables to a JSON file to prevent data loss.
  3. In Extender, unload the Reshaper extension from Burp Suite if you already have the extension installed from the BApp Store or from a JAR.
  4. Close Burp Suite.
  5. Open the Reshaper project in IntelliJ.
  6. Navigate to debug/src/main/java/synfron/reshaper/burp/debug/Burp.java.
  7. Right-click the file in the Project view and click Run Burp.main() or Debug Burp.main().
  8. Burp Suite will open with Reshaper loaded as an legacy extension.

Contributions

Contributions are encouraged. Issues and Pull Requests welcome. Also help us spread the word.

Primary Developer: Daquanne Dwight

Documentation Links

Website

Wiki

Support

For help with how to use Reshaper for a particular need, to report a bug, or to make a suggestion, create an issue in GitHub or email support[at]synfron.com.

License

MIT License. See LICENSE

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Burp Suite Extension - Trigger actions and reshape HTTP request/response and WebSocket traffic using configurable rules

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