[GCN] Yu-Gi-Oh! The Falsebound Kingdom .GCI Possible Save Encryption

[M1CR0H4CK3R]

Can someone take a look at these .gci files, and tell me if the save data region is encrypted? And if it is, can someone possibly RE the encryption, or figure out how it is done? I want to make an Item and Monster Stats editor for PC, but since the saves I have seem to be encrypted, I'm at a major roadblock here...

The .gci files are attached as .txt files. Just change them to .gci.

GYFE_Yu_Gi_Oh_FK.txt
GYFE_Yu_Gi_Oh_FK_2.txt

[M1CR0H4CK3R]

Also, can a Mod or Admin change the 'Flasebound' in the name of this thread to 'Falsebound'?

[Lazy Bastard]

Done; apologies for the delay.

[M1CR0H4CK3R]

Hey, I feel dumb now. I just found out that the saves are not encrypted. Upon taking a second (more thorough) look, I searched for my current Gold (999,999 decimal; F423F hex), and found exactly one result at 0x4690. And just after that were my characters' stats, followed by my monsters' stats. Items start at 0x4490 and end right before the Gold value. I'm about to see if there's a checksum, and I'll edit this post if I need help with that.

Edit: It appears there is a checksum, but I cannot figure out how it's calculated. I tried summing every 0x200 bytes of the save region (which starts at 0x4240), but none of the sums matched anything in the file, even using one's compliment, so I assume the game is xor'ing it with something or bit shifting it in some way.