Attacking Network Protocols

8IMPLEMENTING THE NETWORK PROTOCOL

Analyzing a network protocol can be an end in itself; however, most likely you’ll want to implement the protocol so you can actually test it for security vulnerabilities. In this chapter, you’ll learn ways to implement a protocol for testing purposes. I’ll cover techniques to repurpose as much existing code as possible to reduce the amount of development effort you’ll need to do.

This chapter uses my SuperFunkyChat application, which provides testing data and clients and servers to test against. Of course, you can use any protocol you like: the fundamentals should be the same.

Replaying Existing Captured Network Traffic

Ideally, we want to do only the minimum necessary to implement a client or server for security ...