[DownGoat]

Here is a Defcon video about the topic https://www.youtube.com/watch?v=hABj_mrP-no

[gre]

Here's a Blackhat video with a complete C# WoW client from 2006. https://www.youtube.com/watch?v=bKbZdlUFAK4 11:55

[Mandatum]

Ah yep, it was the Defcon video I saw which mentioned it, never saw the C# code. Badass.