Game cracking

I've never seen a page dedicated to game cracking, so I thought I have to do such. I wish this section was as big as tutorials section, so if you have any useful materials for this section, send me them. Now the hottest subject is C-Dilla and hundreds people seek it.

I've added CrackMe section recently. There are small programs coded by crackers, which you can use to training your skills.

Here I give you important information, which help you in game crack life:

• if you find the place where a game checks CD and you know which jump has to be changed, then you have to remember following information:
  • you wanna jump: change a jump to a unconditional jump ( EB - short jump,
       E9 - medium jump, EA - far jump ). DON'T CHANGE JUMP TO OPPOSITE
       ( 74 <-> 75 ), becuse when you insert CD a game doesnt run.
  • you don't wanna jump: change a jump to some instruction ( 4048 - push
       ax, pop ax ). DON'T CHANGE TO 90=NOP, becuse this value is checked by
       some programs.
• if a game show small window with information "Please insert CD", it's done by "MessageBoxA" API function. Go to your favourite debugger and catch the window. In SoftICE you have to type: bpx MessageBoxA
• the most popular API functions used to check CD are:
  • GetDriveTypeA
  • GetVolumeInformationA
  • GetDriveAttributeA
  • FindFirstFileA
  • SetCurrentDirectoryA
  • GetFileSize
  • CreateFileA
  • GetDiskFreespaceA
  • GetFileAttributeA
  • mciSendCommandA & mciSendStringA (used to check AudioCD)