alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"GPL NETBIOS SMB llsrconnect unicode little endian andx overflow attempt"; flow:established,to_server; flowbits:isset,smb.tree.bind.llsrpc; content:"|00|"; depth:1; content:"|FF|SMB"; within:4; distance:3; pcre:"/^(\x75|\x2d|\x2f|\x73|\xa2|\x2e|\x24|\x74)/sR"; byte_test:1,&,128,6,relative; content:"%"; depth:1; offset:39; byte_jump:2,0,little,relative; content:"&|00|"; within:2; distance:29; content:"|5C 00|P|00|I|00|P|00|E|00 5C 00 00 00|"; distance:4; nocase; byte_jump:2,-17,relative,from_beginning,little; content:"|05|"; distance:4; within:1; byte_test:1,&,16,3,relative; content:"|00|"; within:1; distance:1; content:"|00 00|"; within:2; distance:19; byte_test:4,>,104,0,relative; reference:url,www.microsoft.com/technet/security/bulletin/ms05-010.mspx; classtype:attempted-admin; sid:2103121; rev:5; metadata:created_at 2010_09_23, confidence Medium, signature_severity Informational, updated_at 2019_07_26;)