Burp Suite : Configuring the browser and redirecting traffic

1.   Vide my last post about installing Burp Suite here ,now I move ahead to configure your browser in order to redirect all HTTP/S requests through Burp Proxy, instead of the actual target website. In my case here I am configuring a Mozilla Browser with proxy host address to 127.0.0.1 and the proxy port to 8080 , for both HTTP and HTTPS.The typical configuring of browsers is more or less common with major browsers with minor differences in interfaces.Here next I place you screen shots as I surfed a redirected traffic both for http and https via Burp Suite.First steps to configure Mozilla followed by screen shots :

Configuring Mozilla Firefox

- Click Firefox menu and then Preferences.
- In the Advanced options, under the Network tab, click on connection Settings.
- Select Manual proxy configuration.
- Enter the proxy host address as 127.0.0.1 and the proxy port as 8080.
- Select Use this proxy server for all protocols.
- Make sure to remove all exceptions from the No Proxy for field.
- Click OK and close.

2.   So now you have a working installation of Burp Suite and your browser is properly configured to intercept all requests.Now to test go to the browser, enter any http://www.****** site in the address bar and press Enter . If all is well, Burp Proxy should intercept this request. In Burp Suite,go to the Proxy and Intercept tab and verify that the web request is waiting for your approval.Ensure tha the Intercept on button is enabled; click on it and allow the request to transit through Burp by pressing Forward in Burp Suite Interface. Now in the browser, you should see the http page you entered in address bar.

Now try a https site and you are bound to see this warning as seen below in the screenshot.You will be presented with a This Connection is Untrusted page.In such a case, you are required to manually approve the connection by clicking on I Understand The Risks, then Add Exceptions... and Confirm Security Exception. To make sure that Burp Proxy is actually causing the warning, you click on the certificate status View... and see that the certificate belongs to PortSwigger CA as seen below in one screenshot.

 PortSwigger CA certificate

This setup means that Burp Suite is now ready for use as the traffic is being redirected as desired as per configuration....

Burp Suite : Integrated platform for Web Application Security

1.   Burp Suite is an excellent easy-to-use integrated platform for web application security that includes multiple tools seamlessly integrated to test every component and aspect of modern web applications. Whether you need to verify the robustness of your authentication mechanism, the predictability of your session tokens, or the input validation checkpoints present in your application, Burp is often compared to Swiss-army knife for security practitioners since it offers a horde of features . Not only does it allow in-depth manual assessments, but it also combines automated techniques to enumerate and analyze web application resources.Burp has been developed by PortSwigger Ltd. and is available in two editions:

- Burp Free

- Burp Professional

In-fact,the free version is perfect to start for beginners as it contains all the basic tools to find at least few first vulnerabilities.In its simplest way to explain, Burp is a local web proxy that allows to intercept, inspect, and modify HTTP/S requests and responses between the user's browser and the target website. While the user navigates through the web application, the tool acquires details on all visited pages, scripts,parameters, and other components. The traffic between the browser and the server can be eventually visualized, analyzed, modified, and repeated multiple times. The different tools included in Burp Suite can be easily distinguished by the upper tabs:

- Proxy: It allows to intercept and modify all web traffic.

- Target: This tool allows to aggregate all web application resources, thus guiding the user throughout the security test.

- Scanner: A complete web application security scanner, available in the Professional version only.

- Intruder: Burp Intruder allows to customize and automate web requests. 

- Spider: Automatic crawler that can be used to discover new pages and parameters.

- Sequencer: Used for verifying the randomness and predictability of security tokens, cookies, and more.

- Decoder: It allows to encode and decode data using multiple encoding schemes 

- Comparer: A visual diff tool that can be used to detect changes between web pages.

- Repeater: A simple yet powerful tool that can be used to manually modify and re-issue web requests.

How to go about Installation ?

- A minimum disk space of at least 200 MB is required.

- Required memory is at least 1 GB

- Burp Suite works on Windows, Mac OS X, and Linux

- Software components: An updated Oracle Java Runtime Environment is required to run Burp Suite. 

Downloading Burp Suite from ?

Download link at http://www.portswigger.net/burp/download.html

In the download folder where typically this file gets downloaded,create a burpsuite folder and mov this file to this folder for executing.

Launching Burp Suite in Linux

At the terminal type the following inside the pwd as the new burpsuite folder u created above :

java -Xmx2g -jar burpsuite_v1.4.01.jar