Introduction To Burp Suite

Burp or Burp Suite is a graphical tool for testing Web application security. The tool is written in Java and developed by PortSwigger Security.

The company behind Burp suite has also developed a mobile application containing similar tools compatible with iOS 8 and above.The tool has two versions: a free version that can be downloaded free of charge (Free Edition) and a full version that can be purchased after a trial period (Professional Edition). It was developed to provide a comprehensive solution for web application security checks. In addition to basic functionality, such as proxy server, scanner and intruder, the tool also contains more advanced options such as a spider, a repeater, a decoder, a comparer, an extender and a sequencer.

Tools

• HTTP Proxy - It operates as a web proxy server, and sits as a man-in-the-middle between the browser and destination web servers. This allows the interception, inspection and modification of the raw traffic passing in both directions.
• Scanner - A web application security scanner, used for performing automated vulnerability scans of web applications.
• Intruder - This tool can perform automated attacks on web applications. The tool offers a configurable algorithm that can generate malicious HTTP requests. The intruder tool can test and detect SQL Injections, Cross Site Scripting, parameter manipulation and vulnerabilities susceptible brute-force attacks.
• Spider - A tool for automatically crawling web applications. It can be used in conjunction with manual mapping techniques to speed up the process of mapping an application's content and functionality.
• Repeater - A simple tool that can be used to manually test an application. It can be used to modify requests to the server, resend them, and observe the results.
• Decoder - a tool for transforming encoded data into its canonical form, or for transforming raw data into various encoded and hashed forms. It is capable of intelligently recognizing several encoding formats using heuristic techniques.
• Comparer - A tool for performing a comparison (a visual "diff") between any two items of data.
• Extender - allows the security tester to load Burp extensions, to extend Burp's functionality using the security testers own or third-party code 
• Sequencer - a tool for analyzing the quality of randomness in a sample of data items. It can be used to test an application's session tokens or other important data items that are intended to be unpredictable, such as anti-CSRF tokens, password reset tokens, etc.