A Russian hacker has managed to hack in-App purchases from the App Store using a proxy and a process that does not need jailbreak. This hack allows access to in-app purchases absolutely free by skipping the verification process of the App Store. It can be performed easily by almost any user and works with iOS v3.0 to the iOS v6 (beta).
Simply install a pair of certificates and change the DNS to connect to the WiFi network to display a message that allows you to download the content in question for free. Hopefully Apple can put a solution soon, meanwhile, only for safety I would advice you to avoid performing the procedure.