The VG Resource

I'd like to rip from the Pokémon Ranger games, but they don't use a standard format. Most files seem to be stored in .dat and .cat files. I'm assuming these are just generic containers. There's plenty from these games that has already been ripped, so does anyone here know how to do it?

Even if someone's ripped from it, it's still helpful to upload files so that those who haven't might be able to help too.

Here is an archive with a few files.