Whats up spewfr & sorry for the late reply, the EBOOT is the whole game in Hex Values
If you mod these values properly you can control game like making your character invincible, unlimited ammo & health, if you wanna check an EBOOT you'll need a Hex editor program.
If your planning on modifying an EBOOT you'll need to decrypt it first using CMP autotools.
Here is a simple explaining:
EBOOT.BIN decrypted = EBOOT.ELF (modify the ELF file) Encrypt = modded EBOOT.BIN
so in general you can't directly mod an EBOOT.BIN you'll have to decrypt it to an EBOOT.ELF then modify & encrypt to EBOOT.BIN.
i hope this helps.