Yahsnarf is a complementary program to Aimsnarf, but instead of sniffing AIM conversations, it sniffs Yahoo conversations.
Yahsnarf doesn't work on OTR (off-the-record) encrypted chats, for obvious reasons. Here's a screenshot:
Download the latest version of yahsnarf here.
It requires Ruby and the ruby-pcap library in order to run.
Yahsnarf has the additional dependency of the Bit-Struct library, which is an awesome library.
Yahsnarf has the same exact options as Aimsnarf
Here's the usage:
Usage: yahsnarf.rb [ -dnv ] [ -i interface | -r file ] [ -c count ]
-n do not convert address to name
-d debug mode
-v verbose mode