This presentation will cover the Black Arts of making Cracks, KeyGens, Malware, and more. The information in this presentation will allow a .NET programmer to do unspeakable things .NET applications. I will cover the life cycle of developing such attacks and over coming common countermeasures to stop such attacks. New tools to assist in the attacks will be supplied. This presentation will focus on C# but applies to any application based on the .NET framework.