What is Smbtouch and what vulnerabilities does it detect?

Smbtouch is a tool within the NSA's leaked FuzzBunch framework that detects SMB and NBT remote privilege escalation vulnerabilities on target hosts. It specifically tests for [ETERNALBLUE](/news/intranet-security-using-nsa-smbtouch-for-batch-detection-of-intranet), ETERNALCHAMPION, ETERNALROMANCE, and ETERNALSYNERGY, which are among the most harmful exploits for intranet workgroup environments.