![]() There’s no need for us to go to the page, intercept the request, change the request, and forward the request again and again. Here, we can send the POST request to the server again and again by changing the request and clicking Send. Now, right click on the request, then select Send to repeater. But, this process of going to the page, intercepting the request, changing the request, and then forwarding the request is very cumbersome. We can see that our browser is actually sending a POST request to the app. Now, turn on the intercept option and try to check the stock again. Let’s try to see a product and check its stock:Īfter we clicked the button, we can see the stock of the product, but nothing more. Note that even when our intercept is turned off, burp will still record all HTTP requests it forwarded.Īccording to the lab description, the application contains an OS command injection vulnerability in the product stock checker. To begin, turn off the intercept option from the previos section and go to to access the lab. You can use Repeater for all kinds of purposes, such as changing parameter values to test for input-based vulnerabilities, issuing requests in a specific sequence to test for logic flaws, and reissuing requests from Burp Scanner issues to manually verify reported issues. Repeater #īurp Repeater is a simple tool for manually manipulating and reissuing individual HTTP and WebSocket messages, and analyzing the application’s responses. ![]() You can always review the requests you have sent from the HTTP History tab. You can turn off the intercept option and all requests will be forwarded automatically. If you are trying to access sites like Yahoo or Youtube, you can get hundreds of HTTP requests, and manually clicking Forward can be tiring. After we are done editing the request, we can press Forward and the request will be sent to the target. At this stage, we can try to tinker around and change the request header to OPTIONS or POST, or we can change the cookie and add new data inside the request body. That’s why we don’t see anything loaded in our browser. Here, the browser sent a GET request to Burp, but we have not forwarded the request. Your browser should hang and you can see this in your Burp: You can click Open Browser to use Burp’s built-in browser, or open your own browser if you have configured the proxy settings. Instead of sending HTTP request directly to the target, your browser will send the request to the proxy server and the proxy server will forward (or edit/drop) the request to the target.įirst, open burp and go to the Proxy tab. If you don’t know what a proxy server is, Wikipedia gives a pretty good explanation. Proxy #īurp Proxy is a web proxy server between your browser and target applications, and lets you intercept, inspect, and modify the raw traffic passing in both directions. To do that, we will try to perform OS Comand Injection attack and login bruteforce attack. ![]() In this writeup, we will cover the following: You may want to create an account first before continuing. *In this writeup, we will try to attack online labs by PortSwigger. Additionally, you may want to install FoxyProxy so you can easily change your browser’s proxy setting. Use burp, and you can find out how by going to this link. You may need to configure your browser proxy setting to Setting Up #īurp has its own built-in chromium browser, but you canĪlso configure it to work with external browsers like Chrome and Firefox. automatically scan the website for vulnerabilities), but that is a different topic and will not be covered in this writeup. Burp allows us to easily modify and send these HTTP requests.īurp also has a lot of advanced features (e.g. When we are dealing with website, these inputs are in the form of HTTP requests, be it GET, POST, or other type of requests. When we are doing security testing, we want to give the application (lots of) unusual inputs.
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