3DS Builder

I don't like .rsf files. They're stupid. So I made this thing.

It's designed to be as simple as possible.

Open a Romfs folder, or check the Pre-built box and select a pre-built decrypted Romfs binary.

Open an Exefs folder, or check the Pre-built box and select a pre-built decrypted Exefs binary.

Open the decrypted exheader for the game you're rebuilding. If the game in question was released before today, 3DS Builder should recognize the game's name and provide the correct serial. You can also enter a custom serial, if you want, of the form (CTR|KTR)-(P|U|N)-([A-Z0-9]){4}.

Choose a location to save the resulting file.

Hit go, and the program will generate a playable .3ds.