Here are the five reversing challenges designed for the first annual RC3 CTF to be hosted 11/22/2014.
Overview and points:
chal1 - 20 points - Simple strings exercise
chal2 - 40 points - Divide by zero
chal3 - 80 points - Stack overflow to overwite variables
chal4 - 100 points - Anti-reversing techniques
chal5 - 60 points - Global variable search