Extract .ARC archives from Club Penguin: Elite Penguin Force Save File

[wertercatt]

Club Penguin: Elite Penguin Force had the ability to download free DLC which is saved to the cartridge's save file, seemingly in the same ARC format used elsewhere in the game.
Sample, containing two pieces of downloaded DLC: https://github.com/wertercatt/Reverse-E ... LPPv00.sav
I've tried manually extracting the ARC using a hex editor, but I was unable to properly extract the entire file.
BMS definition for the ARC format used by this game, created by aluigi:

Code: Select all

comtype lz77wii
get FILES long
for i = 0 < FILES
    get NAME_CRC long
    get OFFSET long
    get SIZE long
    clog "" OFFSET SIZE SIZE
next i

[aluigi]

http://aluigi.org/bms/club_penguin_dnob.bms