Flipbook XOR Pad

There's a static XOR pad applied when encrypting/decrypting files. (This pad *might* be generated using aes-ctr) It repeats each 0x40 (what a fuck-up, Nintendo). Here's the XOR pad used for the *.lst file (hexadecimal):

 00: F7 4C 6A 3A FB 82 A6 37 6E 11 38 CF A0 DD 85 C0
 10: C7 9B C4 D8 DD 28 8A 87 53 20 EE E0 0B EB 43 A0
 20: DB 55 0F 75 36 37 EB 35 6A 34 7F B5 0F 99 F7 EF
 30: 43 25 CE A0 29 46 D9 D4 4D BB 04 66 68 08 F1 F8