Question about Wiimmfi

[MG12]

For those wondering, Wiimmfi is a replacement service for the Nintendo WFC (rest in peace) for the Wii and DS. For example, if I wanted to rip sprites used online only from Mario Kart Wii, would using the app Wiimmfi Patcher and ripping sprites that way be allowed? (I mean the Wii homebrew app, not the PC Patcher)

Merry Christmas!

--MG12