Pokémon Model Ripping Project

[The 100 Mega Shock!]

It's the encryption that all 3DS games from Smash 4 onwards are using. You can get the files from any 3DS game regardless of their encryption, you just can't play them on a Gateway.

I hope Super Smash Bros. for 3DS & Wii U uses the same files just like Super Smash Bros. Brawl does. Like .pac, .pcs, .brres, & .rels

It's very unlikely they'd be using the exact same old Wii graphics formats in those games. That said, people have made headway into viewing the 3DS's 'standard' graphics formats which a lot of games use (Including Mario Kart 7 and 3D Land).