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)