swap savegames between .3ds and .3dz

Discussion in '3DS - Flashcards & Custom Firmwares' started by ground, May 13, 2014.

  1. ground

    ground GBAtemp Advanced Fan

    Mar 22, 2007

    For now we can't swap the savegames between .3ds and .3dz files, but then I started to think about it and can this work (i don't have the capabilities to do it now, so i just thought to share it):

    1- if we change the unique id in the header of a .3dz to FFFFFFFFFF.... the savegame accepts the save of the .3ds file, so we can assume that the .3ds files uses the same crypt but takes FFFFFFFFFF as a "key".

    2- If we create a savegame with a lot of a's in it (for example name a zelda file aaaaaaaaaa), we know the decrypted savegame should contain a few 61 in the hex code.

    So should we be able to look how to encrypt and decrypt with different header ID's with this information? or am I to basic?

    thanks in advance