The Habibi key is generated by patching the Microsoft key to be divisible by 3, making it quite easy to factor indeed. The private key can be trivially recovered from the public key, and there was nothing really to release or leak. It was basically a little crypto CTF buried in the original 007: Agent Under Fire savegame hack, which was basically a CTF in and of itself (it was reasonably heavily obfuscated, I think both as a middle finger to pirates and as a challenge to other reverse engineers).