ElNono's dump tool to determine variables used to activate iMessage. Run on real mac or validated hackintosh to get working Serial Number, HardwareID, MLB & ROM values for Clover config.plist.
MLB & ROM explained
- Mac cloning if you own a Mac - procedure in the AIO guides
Note: Runs on OSX Mountain Lion or later.
Update 8 Sep 2014: V2 Addition of system-id to dump and improved formatting of text.
Credits to @pokenguyen and @sugarface.