alert udp $EXTERNAL_NET any -> $HOME_NET 135 (msg:"GPL NETBIOS Messenger message little endian overflow attempt"; content:"|04 00|"; depth:2; byte_test:1,&,16,2,relative; content:"|F8 91|{Z|00 FF D0 11 A9 B2 00 C0|O|B6 E6 FC|"; within:16; distance:22; content:"|00 00|"; within:2; distance:28; byte_jump:4,18,little,align,relative; byte_jump:4,8,little,align,relative; byte_test:4,>,1024,8,little,relative; reference:bugtraq,8826; reference:cve,2003-0717; classtype:attempted-admin; sid:2103234; rev:3; metadata:created_at 2010_09_23, confidence Medium, signature_severity Informational, updated_at 2019_07_26;)