Sprite Ripping Project 5: _____-em-up!

[Techokami]

This is going to be fuuuuuuuun.
Found a nice game to rip from: Desert War, an arcade game. It stores sprite graphics very differently... rather than storing everything as 8x8 tiles, it stores everything on 256x256 sheets! That means everything is preassembled, so making a FULL RIP of this game is totally easy
Except, MAME doesn't correctly display the graphics in the graphics viewer. You'll get a little bit of the center of each one in the current-ish version, and in the older version with the old (and superior!) viewer, it only shows you 256x224 of it.
So I dabbled in black magic.
And got this:

Now I have to rip the palettes. This is going to suck because all the graphics are 8-bit (as in, 8 bits per pixel, AKA 256 color) and there are quite a few palettes...