alert tcp $EXTERNAL_NET any -> $HOME_NET 445 (msg:"GPL NETBIOS SMB-DS irot little endian bind attempt"; flow:established,to_server; flowbits:set,smb.tree.bind.irot; flowbits:noalert; content:"|00|"; depth:1; content:"|FF|SMB%"; within:5; distance:3; byte_test:1,!&,128,6,relative; content:"&|00|"; within:2; distance:56; content:"|5C|PIPE|5C 00|"; distance:4; nocase; byte_jump:2,-17,relative,from_beginning,little; isdataat:4,relative; content:"|05|"; byte_test:1,&,16,3,relative; content:"|0B|"; within:1; distance:1; content:"`|9E E7 B9|R=|CE 11 AA A1 00 00|i|01 29|?"; within:16; distance:29; classtype:protocol-command-decode; sid:2103249; rev:5; metadata:created_at 2010_09_23, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_14;)