This solution is taking a bit of preparation and is slow but it works for developing iOS Apps on Linux or Windows
The VM often crashes so be warned, a better solution is to buy a iMac.
First use this guide to install VirtualBox and the other stuff
http://www.macbreaker.com/2013/01/iatkos-ml2-mountain-lion-virtualbox.html
and install XCode 4.6.3
Then use this site
http://forums.imore.com/jailbreaking-unlocking-hacks-themes-mods/249838-fake-code-signing-not-working.html
the name for the Certificate should be IPhone Developer
and after creating it search for it and press the Menu button on it select Get Info then click Trust and select Always trust this
