0x4553-Intercepter is a WinPcap-based sniffer that offers various capabilities including sniffing for password hashes related to ICQ/IRC/AIM/FTP/IMAP/POP3/SMTP/LDAP/BNC/SOCKS/HTTP/WWW/NNTP/CVS/TELNET/MRA/DC++/VNC/MYSQL and ORACLE. It also sniffs ICQ/AIM/JABBER/YAHOO/MSN/GADU-GADU/IRC and MRA protocols. It has a built-in arp poisoning module, can change MAC addresses of LAN adapters, and has various other interesting functionality.