Web application sessions are often maintained by session ID tokens that consist of random or pseudo-random values. Because of this, randomness is absolutely critical to the security of these applications. In this recipe, we will discuss how to collect generated values and test them for randomness by using the Burp Suite Sequencer.
To use Burp Suite to perform web application analysis against a target, you will need to have a remote system that is running one or more web applications. In the examples provided, an instance of Metasploitable2 is used to perform this task. Metasploitable2 has several preinstalled vulnerable web applications running on TCP port 80. For more information on setting up Metasploitable2, refer to the Installing Metasploitable2 recipe in Chapter 1, Getting Started, of this book. Additionally, your web browser will need to be configured to proxy web traffic through a local instance of Burp Suite. For more information on setting...