From Bulbapedia, the community-driven Pokémon encyclopedia.
Hi. I'm Kyoufu Kawa. I'm an experienced rom hacker and learning GBA homebrewer. For one of my projects, I have to know with 100% certainty what the structures are on the Advanced gen. Pokémon games so you'll see me editing those pages every once in a while when disassembly progress reveals new data.
So I recently found out how the game handles the encrypted data. It doesn't. When the substructures are needed, they're decrypted, read/written and re-crypted. All because I saw something flash by in the memory viewer that looked like raw data.
And here's another fun thing to try: if you want to manipulate your opponent's Pokémon, including a wild encounter, try browsing to your party data (see Pokémon data structure in the GBA) and scroll up about 600 bytes. You see correctly.
My site
My challenge
Something I've been working on for the past few days: a guide to ensure high quality hacks and stuff.