1 # AIM - AOL instant messenger (OSCAR and TOC)
2 # Pattern attributes: good slow notsofast
3 # Protocol groups: chat proprietary
4 # Wiki: http://www.protocolinfo.org/wiki/AIM
6 # Usually runs on port 5190
8 # This may also match ICQ traffic.
10 # This pattern has been tested and is believed to work well.
13 # See http://gridley.res.carleton.edu/~straitm/final (and various other places)
14 # The first bit matches OSCAR signon and data commands, but not sure what
15 # \x03\x0b matches, but it works apparently.
16 # The next three bits match various parts of the TOC signon process.
17 # The third one is the magic number "*", then 0x01 for "signon", then up to four
18 # bytes ("up to" because l7-filter strips out nulls) which contain a sequence
19 # number (2 bytes) the data length (2 more) and 3 nulls (which don't count),
20 # then 0x01 for the version number (not sure if there ever has been another
22 # The fourth one is a command string, followed by some stuff, then the
23 # beginning of the "roasted" password
25 # This pattern is too slow!
27 ^(\*[\x01\x02].*\x03\x0b|\*\x01.?.?.?.?\x01)|flapon|toc_signon.*0x