Have you ever wanted to know how a tool or application that you frequently use works? In the case of open source software, you can simply look at the code. But with proprietary software it's not quite that simple, but it's defininitely dooable. This talk will explain the basics of reverse engineering, and specifically how to reverse engineer iOS and Mac applications. The talk will go through explaining and demonstrating inspecting an apps network traffic, injecting code into running apps, pulling application binaries, and static/dynamic analysis.