First off Open up Cydia
Wait for it to load
Touch Manage
Touch Sources
Touch 'Edit' in the top right
Touch 'Add' in the top left
Type in this:
Code:
http://cydia.hackulo.usTouch 'Ok'
Wait for it to load
Touch 'Add anyway' when the message appears
Touch 'Done'
Touch the Hackulo Source
Touch the AppSync at the top of the list
Touch 'Install' in the top right.
Touch 'Confirm' in the top right.
Let it install, After it has you can install any cracked app through iTunes.
Enjoy.