so a bit of advertisement for me.
I will do a training at Black Hat USA on Mac OS X hacking, I'm really looking forward to having you as students!
Register yourself here
The class will explain how to assess the security of Mac OS X from the ground up, including how to deal with heap and stack exploitation, Objective-C reversing, Mach API abusing, advanced payload writing and differences between iPhone and OSX exploitation.
Anyway if for whatever reason you can't attend my class(and in that case I'll be very sad), I'll speak with Charlie Miller at the Briefings. Here's the abstract