A bypass cannot just be coded by using the WarRock.exe alone, well i say everything is possible, but its not efficient.
A bypass is not public (well not in most cases) because only the best coders have it, but you don't necessarily need it to be undetected.
You can be undetected by coding a new hooking method (detours etc) or find a check in HackShield/WarRock to block the detection.