Virus 4 WinCE

I have learned an internals of WM5 deeply. May be I have to recall older days and write a virus for it? Is it needed to enter kernel mode? No problem, there is the function SetKMode. Is it needed to read a memory of an application? No problem, just read it! Is it needed to intercept a system call, a driver, or an interrupt? And it is possible too. :)