Yak! 2.0.1 file trasfer exploit

http://www.digicraft.com.au/yak/ yak 2.0.1 is a software for chattin in lan environment for windows it supports file transfers. the default port it listens is 3535. connecting at 3535 telnet localhost 3535 gives up nice : " 220 ICS FTP Server ready. " meaning for file transfers ftp is being used...