| 123456789101112131415161718192021222324252627 |
- # AIM - AOL instant messenger (OSCAR and TOC)
- # Pattern attributes: good slow notsofast
- # Protocol groups: chat proprietary
- # Wiki: http://www.protocolinfo.org/wiki/AIM
- #
- # Usually runs on port 5190
- #
- # This may also match ICQ traffic.
- #
- # This pattern has been tested and is believed to work well.
- aim
- # See http://gridley.res.carleton.edu/~straitm/final (and various other places)
- # The first bit matches OSCAR signon and data commands, but not sure what
- # \x03\x0b matches, but it works apparently.
- # The next three bits match various parts of the TOC signon process.
- # The third one is the magic number "*", then 0x01 for "signon", then up to four
- # bytes ("up to" because l7-filter strips out nulls) which contain a sequence
- # number (2 bytes) the data length (2 more) and 3 nulls (which don't count),
- # then 0x01 for the version number (not sure if there ever has been another
- # version)
- # The fourth one is a command string, followed by some stuff, then the
- # beginning of the "roasted" password
- # This pattern is too slow!
- ^(\*[\x01\x02].*\x03\x0b|\*\x01.?.?.?.?\x01)|flapon|toc_signon.*0x
|
