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# NetBIOS - Network Basic Input Output System
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# Pattern attributes: marginal notsofast notsofast
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# Protocol groups: networking ietf_internet_standard proprietary
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# Wiki: http://www.protocolinfo.org/wiki/NetBIOS
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# Copyright (C) 2008 Matthew Strait, Ethan Sommer; See ../LICENSE
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#
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# As mentioned in smb.pat:
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#
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# "This protocol is sometimes also referred to as the Common Internet File
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# System (CIFS), LanManager or NetBIOS protocol." -- "man samba"
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#
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# Actually, SMB is a higher level protocol than NetBIOS. However, the
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# NetBIOS header is only 4 bytes: not much to match on.
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#
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# http://www.ubiqx.org/cifs/SMB.html
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# See also RFCs 1001 and 1002.
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#
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# This pattern attempts to match the (Session layer) NetBIOS Session request.
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# If sucessful, you may be able to match NetBIOS several packets earlier
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# than if you just waited for the easier-to-match SMB header.
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#
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# This pattern is untested.
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netbios
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# session request byte, three bytes of flags and length. Then
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# there should be a big mess of letters between A and P which represent
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# the NetBIOS names of the involved computers (with a null between them).
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# (40ish here, damn this regexp implementation and its lack of {40,})
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\x81.?.?.[A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P][A-P]
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