GPL NETBIOS SMB llsrconnect unicode little endian overflow attempt

flow:established,to_server;
flowbits:isset,smb.tree.bind.llsrpc;
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 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;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

• correlates · Suricata flowbits smb.tree.bind.llsrpc
  • GPL NETBIOS SMB llsrpc bind attempt
  • GPL NETBIOS SMB llsrpc little endian bind attempt
  • GPL NETBIOS SMB-DS llsrpc bind attempt
  • GPL NETBIOS SMB-DS llsrpc little endian bind attempt
  • GPL NETBIOS SMB-DS llsrpc unicode bind attempt
  • GPL NETBIOS SMB-DS llsrpc unicode little endian bind attempt
  • GPL NETBIOS SMB llsrpc unicode bind attempt
  • GPL NETBIOS SMB llsrpc unicode little endian bind attempt
  • GPL NETBIOS SMB llsrpc andx bind attempt
  • GPL NETBIOS SMB llsrpc little endian andx bind attempt
  • GPL NETBIOS SMB llsrpc unicode andx bind attempt
  • GPL NETBIOS SMB llsrpc unicode little endian andx bind attempt
  • GPL NETBIOS SMB-DS llsrpc andx bind attempt
  • GPL NETBIOS SMB-DS llsrpc little endian andx bind attempt
  • GPL NETBIOS SMB-DS llsrpc unicode andx bind attempt
  • GPL NETBIOS SMB-DS llsrpc unicode little endian andx bind attempt