ROM Hack Somebody with disassembly experience?

[_eyCaRambA_]

Hey,

I was just wondering if somebody around here has experience with diassembly of the exeFS executables. I'm trying to figure out an encryption key that is used by the game to decrypt several files and judging from the labels I've already found some relevant routines but as I have no idea how to interpret the disassembly... I can't make anything out of it.

Would be great if somebody could lend me a hand, would provide the executable via PM.

Best regards.