icefire has released Banner Signer 0.5
This is an IMET/IMD5 signer for PC/Mac/Linux/Wii probably if OpenSSL has been ported, used in banners on banner.bin, icon.bin, sound.bin, and 00000000.app. If you don't know what these are, you shouldn't use it. Yes, I know it is kinda pointless, but might be useful sometime.
http://wiibrew.org/wiki/Banner_Signer
