998tools
Toolkit for manipulating Microsoft 998 image format files, used in Microsoft Office and UIRibbon.dll.
Usage
998pack
The output file(s) will be named <input without extension>.998
Usage: 998pack <file1> <file2> ... <fileN>
998unpack
The output file(s) will be named <input without extension>.png
Usage: 998unpack <file1> <file2> ... <fileN>