Extensions references
Here are some references with which you can explore the world of extensions:
Setting up the environment for Burp Extensions: Before we can write extensions, we need to ensure that the environment is set up. This is very important if you want to avoid hours and hours of frustration with yourself. More information can be found at http://www.burpextensions.com/tutorials/setting-up-the-pythonjython-environment-for-burp-suite/.
Writing your first Burp Extension: A gentle introduction to writing your first extension—use the code provided here as your boiler plate to test whether your environment has been set up properly. If the extension gets added without any errors, then you are good to go. More information can be found at http://blog.portswigger.net/2012/12/writing-your-first-burp-extension.html.
Write a simple Burp Extension in Python: Apart from the code given in Chapter 9, Using Burp Extensions and Writing Your Own, this has to be the place where you learn how to write...