objective-c code to detect IAP cracker.

gistfile1.c

// 
// Cydia is automaticly installed on every jailbroken device, so you can check for Jailbreak like this:
// 
if ([[NSFileManager defaultManager] fileExistsAtPath:@"/Applications/Cydia.app"]){

   NSLog(@"Jailbreak detected");
}

//
// IAP Cracker is just some package, and you can check it as like the following:
//
if ([[NSFileManager defaultManager] fileExistsAtPath:@"/Library/MobileSubstrate/DynamicLibraries/iap.dylib"]){

   NSLog(@"IAP Cracker detected");
}