Find the valid serial is easy.
Keygen is difficult.
Selfgen not allowed.

RULES:
Create a keygen. 
Explain how the valid serial is generated.
You can't use ReadProcess memory or any trick like this.

HINT:
The crackme gets some data from internet.
It doesn't send any information about you.
The serial changes when the informations on the internet change.

SUGGESTIONS:
Stop your firewall to block the crackme.

DISCLAIMER:
I'm not responsable for any damage the crackme can do.
