# Copyright 2001-2005 Sourcefire, Inc. All Rights Reserved## This file may contain proprietary rules that were created, tested and# certified by Sourcefire, Inc. (the "VRT Certified Rules") as well as# rules that were created by Sourcefire and other third parties and# distributed under the GNU General Public License (the "GPL Rules").  The# VRT Certified Rules contained in this file are the property of# Sourcefire, Inc. Copyright 2005 Sourcefire, Inc. All Rights Reserved.# The GPL Rules created by Sourcefire, Inc. are the property of# Sourcefire, Inc. Copyright 2002-2005 Sourcefire, Inc. All Rights# Reserved.  All other GPL Rules are owned and copyrighted by their# respective owners (please see www.snort.org/contributors for a list of# owners and their respective copyrights).  In order to determine what# rules are VRT Certified Rules or GPL Rules, please refer to the VRT# Certified Rules License Agreement.### $Id: netbios.rules,v 1.46.2.9.2.7 2005/07/22 19:19:54 mwatchinski Exp $#--------------# NETBIOS RULES#--------------alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"NETBIOS SMB IPC$ share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,!&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"IPC|24 00|"; distance:2; nocase; flowbits:set,smb.tree.connect.ipc; classtype:protocol-command-decode; sid:537; rev:15;)alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"NETBIOS SMB IPC$ unicode share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"I|00|P|00|C|00 24 00 00 00|"; distance:2; nocase; flowbits:set,smb.tree.connect.ipc; classtype:protocol-command-decode; sid:538; rev:15;)alert tcp $EXTERNAL_NET any -> $HOME_NET 445 (msg:"NETBIOS SMB-DS IPC$ share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,!&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"IPC|24 00|"; distance:2; nocase; flowbits:set,smb.tree.connect.ipc; classtype:protocol-command-decode; sid:2465; rev:7;)alert tcp $EXTERNAL_NET any -> $HOME_NET 445 (msg:"NETBIOS SMB-DS IPC$ unicode share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"I|00|P|00|C|00 24 00 00 00|"; distance:2; nocase; flowbits:set,smb.tree.connect.ipc; classtype:protocol-command-decode; sid:2466; rev:7;)alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"NETBIOS SMB D$ share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,!&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"D|24 00|"; distance:2; nocase; classtype:protocol-command-decode; sid:536; rev:11;)alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"NETBIOS SMB D$ unicode share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"D|00 24 00 00 00|"; distance:2; nocase; classtype:protocol-command-decode; sid:2467; rev:7;)alert tcp $EXTERNAL_NET any -> $HOME_NET 445 (msg:"NETBIOS SMB-DS D$ share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,!&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"D|24 00|"; distance:2; nocase; classtype:protocol-command-decode; sid:2468; rev:7;)alert tcp $EXTERNAL_NET any -> $HOME_NET 445 (msg:"NETBIOS SMB-DS D$ unicode share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"D|00 24 00 00 00|"; distance:2; nocase; classtype:protocol-command-decode; sid:2469; rev:7;)alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"NETBIOS SMB C$ share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,!&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"C|24 00|"; distance:2; nocase; content:!"IPC|24 00|"; within:5; distance:-5; nocase; classtype:protocol-command-decode; sid:533; rev:15;)alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"NETBIOS SMB C$ unicode share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"C|00 24 00 00 00|"; distance:2; nocase; content:!"I|00|P|00|C|00 24 00 00 00|"; within:10; distance:-10; nocase; classtype:protocol-command-decode; sid:2470; rev:10;)alert tcp $EXTERNAL_NET any -> $HOME_NET 445 (msg:"NETBIOS SMB-DS C$ share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,!&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"C|24 00|"; distance:2; nocase; content:!"IPC|24 00|"; within:5; distance:-5; nocase; classtype:protocol-command-decode; sid:2471; rev:10;)alert tcp $EXTERNAL_NET any -> $HOME_NET 445 (msg:"NETBIOS SMB-DS C$ unicode share access"; flow:established,to_server; content:"|00|"; depth:1; content:"|FF|SMBu"; within:5; distance:3; byte_test:1,&,128,6,relative; pcre:"/^.{27}/R"; byte_jump:2,7,little,relative; content:"C|00 24 00 00 00|"; distance:2; nocase; content:!"I|00|P|00|C|00 24 00 00 00|"; within:10; distance:-10; nocase; classtype:protocol-command-decode; sid:2472; rev:9;)