Since the encryption used is AES-128-CTR, there's a static XOR pad (generated from the key) applied when encrypting/decrypting. It repeats each 0x40 (what a fuck-up, Nintendo).
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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):
Here's the XOR pad used for the *.lst file (hexadecimal):