The Ultimate Guide to Burp Websocket: What It Is and How to Use It

Burp Websocket is a tool that allows you to intercept and modify WebSocket traffic between a client and a server. This can be extremely useful for testing and debugging WebSocket-based applications, as it allows you to see exactly what is being sent back and forth between the client and server, and to modify that traffic in real time. In this article, we’ll take a deep dive into Burp Websocket and explore how it works, how to use it, and some of its most useful features.

What is Burp Websocket?

Burp Websocket is a feature of the Burp Suite, a popular web application testing tool developed by PortSwigger. Burp Suite is widely used by web developers and security professionals to test the security of web applications, and includes a wide range of features for testing and analyzing web traffic.

Burp Websocket is specifically designed for testing WebSocket-based applications. WebSocket is a protocol that allows for two-way communication between a client and server over a single TCP connection. It’s commonly used in real-time web applications, such as chat applications and online games.

How does Burp Websocket work?

Burp Websocket works by intercepting WebSocket traffic between a client and server. When you start a new WebSocket connection in your web browser, Burp Websocket intercepts the traffic and allows you to modify it in real time. You can then send that modified traffic to the server, or modify the traffic coming back from the server before it reaches the client.

Burp Websocket includes a number of tools for analyzing and modifying WebSocket traffic, including:

• WebSocket Proxy: This intercepts WebSocket traffic between the client and server, and allows you to modify it before it reaches its destination.
• WebSocket Repeater: This allows you to repeat WebSocket messages to the server, either as they were originally sent or with modifications.
• WebSocket Decoder: This decodes WebSocket messages into a human-readable format, making it easier to analyze and understand the traffic.
• WebSocket Fuzzer: This allows you to send a large number of WebSocket messages to the server, in order to test how it responds to different types of traffic.

How to use Burp Websocket

Using Burp Websocket is relatively straightforward. Here’s a step-by-step guide:

1. Start Burp Suite and go to the “Proxy” tab.
2. Click the “Intercept is on” button to turn off interception.
3. Start a new WebSocket connection in your web browser.
4. Burp Websocket will intercept the traffic and display it in the “Proxy” tab.
5. You can use the various Burp Websocket tools to modify the traffic as needed.
6. Once you’re finished, you can either forward the modified traffic to the server or discard it.

Features of Burp Websocket

Burp Websocket includes a wide range of features that make it a powerful tool for testing and analyzing WebSocket traffic. Some of its most useful features include:

WebSocket Proxy

The WebSocket Proxy allows you to intercept WebSocket traffic between the client and server, and modify it in real time. This can be extremely useful for testing and debugging WebSocket-based applications, as it allows you to see exactly what is being sent back and forth between the client and server, and to modify that traffic as needed.

WebSocket Repeater

The WebSocket Repeater allows you to repeat WebSocket messages to the server, either as they were originally sent or with modifications. This can be useful for testing how the server responds to different types of traffic, and for testing how the client handles responses from the server.

WebSocket Decoder

The WebSocket Decoder allows you to decode WebSocket messages into a human-readable format, making it easier to analyze and understand the traffic. This can be useful for troubleshooting issues with WebSocket-based applications, and for gaining a better understanding of how the protocol works.

WebSocket Fuzzer

The WebSocket Fuzzer allows you to send a large number of WebSocket messages to the server, in order to test how it responds to different types of traffic. This can be useful for testing the resilience of the server to various types of attacks, and for identifying potential vulnerabilities in the application.

FAQ

What is WebSocket?

WebSocket is a protocol that allows for two-way communication between a client and server over a single TCP connection. It’s commonly used in real-time web applications, such as chat applications and online games.

What is Burp Suite?

Burp Suite is a popular web application testing tool developed by PortSwigger. It includes a wide range of features for testing and analyzing web traffic, including Burp Websocket.

What is Burp Websocket?

Burp Websocket is a feature of Burp Suite that allows you to intercept and modify WebSocket traffic between a client and server. It includes a range of tools for analyzing and modifying WebSocket traffic, making it a powerful tool for testing and debugging WebSocket-based applications.

How do I use Burp Websocket?

To use Burp Websocket, start Burp Suite and go to the “Proxy” tab. Click the “Intercept is on” button to turn off interception, then start a new WebSocket connection in your web browser. Burp Websocket will intercept the traffic and display it in the “Proxy” tab, where you can use the various tools to modify the traffic as needed.

What are some of the features of Burp Websocket?

Some of the most useful features of Burp Websocket include the WebSocket Proxy, which allows you to intercept and modify WebSocket traffic in real time; the WebSocket Repeater, which allows you to repeat WebSocket messages to the server with modifications; the WebSocket Decoder, which decodes WebSocket messages into a human-readable format; and the WebSocket Fuzzer, which allows you to test how the server responds to different types of traffic.