28 lines
1.2 KiB
Text
28 lines
1.2 KiB
Text
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# AIM - AOL instant messenger (OSCAR and TOC)
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# Pattern quality: good notsofast
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# Usually runs on port 5190
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#
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# This may also match ICQ traffic.
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#
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# This pattern has been tested and is believed to work well. If it does not
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# work for you, or you believe it could be improved, please post to
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# l7-filter-developers@lists.sf.net . This list may be subscribed to at
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# http://lists.sourceforge.net/lists/listinfo/l7-filter-developers
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aim
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# See http://gridley.acns.carleton.edu/~straitm/final (and various other places)
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# The first bit matches OSCAR signon and data commands, but not sure what
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# \x03\x0b matches, but it works apparently.
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# The next three bits match various parts of the TOC signon process.
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# The third one is the magic number "*", then 0x01 for "signon", then up to four
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# bytes ("up to" because l7-filter strips out nulls) which contain a sequence
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# number (2 bytes) the data length (2 more) and 3 nulls (which don't count),
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# then 0x01 for the version number (not sure if there ever has been another
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# version)
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# The fourth one is a command string, followed by some stuff, then the
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# beginning of the "roasted" password
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# This pattern is too slow!
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^(\*[\x01\x02].*\x03\x0b|\*\x01.?.?.?.?\x01)|flapon|toc_signon.*0x
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