I've found an activator made by "Blakeymort", wich has a bunch of interesting files and scripts. I'm sharing what the .EXE had inside of it, the version 4 .EXE found in dl4all.com. Maybe it helps to understand better how is that W8 activation system works. Pretty hard work to get this uncompressed and unencrypted...
Well... it worked for me in Windows 8 Pro, Pro WMC, both x86 and x64; and both VL and RTM. It performs an permanent activation. I'm trying it now with Windows Server 2012 OSes, still downloading ISO's. Insteresting fact is that it survived to Windows Updates, also, it shows as 'Legitimate' when going to windows.com/piracy All what I've tried has been done in VMware Workstation 9. Don't know if it's allowed to post the original EXE, or at least, a link reference from where I've downloaded the "Blakeymort Windows 8 Activator V4.0.1.1". Please advice! Edit: Ooops! When going to windows.com/genuine