I understand that there is an encryption suit protecting 3ds games but i'm interested in what kind because certain forms of encryption are only useful so long as both ends remain uncracked. If the encryption on 3ds carts is AES then I see no reason why we cannot extract the common key from the firmware of a 3ds, if everyone focused their efforts on one 3ds we should be able to break it's unique encryption keys and extract the common key from a disassembly of the OS. Another option might be to use emunand to do memory scanning for the common key. We can apply methods that have been proven for other heavily encrypted and or obfuscated systems, it's no different than trying to reverse engineer a heavily obfuscated and encrypted PC program or am I wrong?