No part of the Metasploit Framework has been shrouded in more mystery and confusion than the Railgun extension. Railgun is one of the most powerful tools in the Metasploit arsenal when it comes to Post Exploitation. In this talk we will examine what Railgun is, and how we can use it to turn Windows completely against itself by weaponizing the Windows API libraries. We will demystify Railgun by explaining exactly how it works under the covers and how you can use it to create powerful post modules.