3DS Titles (Retail & 3DSWare) (not DS/DSi/DSiWare) are encrypted with AES-CTR (sometimes just xorpads)
The data then hashed with various Hash algorithms (SHA-512, SHA-256, SHA-1, HMAC-SHA-1, HMAC-SHA-256) and signed with RSA-2048 or RSA-4096.
This doesn't help us a bit with "hacking".