OSX Exploitation Step-by-Step

For the non-programmers/hackers it might be a little difficult to understand, but D1DN0T has written an excellent walk-through for a penetration test of a service which is running on OSX.  This write-up is good because it shows some of the common problems that occur during debugging and some of the methods of investigating ways around them.  This seems like a trivial exploit to create although I'm sure that much more time and effort went into putting the exploit together than is explained in the text.