First create an open share that can be used locally ok..
Some examples are on the LQ Wik at http://wiki.linuxquestions.org/wiki/Samba_Server
Then just forward tcp port 445 to the Samba server and watch the fireworks as you get scanned to death..
I'd recommend using an ssh tunnel within ssh port 22 that forwards 445.
eg ssh -L 445:127.0.0.1:445 destination
When the wide world finds the port open, which should take less than 2 minutes, you will get an ever increasing amount of virus scanning traffic until your ip number changes..