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SMB WebDAV Detection Scanner (smbwebdav)

The SMB WebDAV Detection Scanner detects whether the WebClient (WebDAV) service is running on each target host by probing over SMB (port 445). It returns a single boolean AVAILABLE per host.

A machine with the WebClient service active is a high-value target for NTLM relay attacks. When WebDAV is enabled the host will follow UNC paths over HTTP, which means an attacker on the same network can coerce NTLM authentication without requiring SMB signing on the relay path. This pairs naturally with authentication-coercion techniques (PetitPotam, PrinterBug, …) to relay credentials to LDAP, AD CS or other services where signing is not enforced — frequently leading to domain compromise.

Finding WebDAV-enabled hosts is a standard step in any internal assessment that focuses on NTLM relay paths.

Combine with the other relay-path scanners

  • smbspooler — Print Spooler reachable? Solid coercion vector.
  • ntlmreflection — vulnerable to relay-back-to-self?
  • The relay server (under Servers → relay) — the actual relay target / sink.

Parameters

Normal Parameters

credential

Specifies the ID of the credential to use for authentication.

Enter the ID of the credential stored in the Credentials Window. A standard domain user is sufficient.

targets

Specifies the targets to scan.

A list of targets can be specified in the following formats:

  • ID: ID of the target server from the targets window.
  • IP: Single IP address (e.g., 192.168.1.1).
  • CIDR: IP range in CIDR notation (e.g., 192.168.1.0/24).
  • Hostname: Resolvable hostname.
  • File: Path to a file containing targets (must be in OctoPwn’s /browserefs/volatile directory). File lists need to be uploaded into OctoPwn and separated by newlines.
  • Control word: Use all to scan all stored targets.
  • Single Group: g:<groupname> (e.g., g:test1).
  • Multiple Groups: g:<groupname1>,g:<groupname2> (e.g., g:test1,g:test2).
  • Port Group: p:<port> (e.g., p:445).
  • Port Group with Protocol: p:<port>/<protocol> (e.g., p:445/tcp).

Advanced Parameters

authtype

Specifies the authentication protocol.

Available protocols:

  • NTLM
  • Kerberos

dialect

Specifies the SMB connection dialect. Fixed to SMB2 for this scanner.

krbetypes

Specifies the Kerberos encryption types to use during the scan.

Provide a comma-separated list of encryption types (e.g., 23,17,18).

krbrealm

Specifies the Kerberos realm to use.

maxruntime

Specifies the maximum runtime per host (in seconds). Set to -1 to disable.

proxy

Specifies the proxy ID to use for the scan.

Enter the ID of the proxy to route the scan through. Proxies must be configured in the Proxy Window.

resultsfile

Specifies a file for saving the scan results.

The file will be saved in OctoPwn’s /browserefs/volatile directory.

showerrors

Determines whether errors encountered during the scan should be displayed.

timeout

Sets the timeout (in seconds) for each connection attempt.

triggerports

Ports which trigger an automated smbwebdav scan when discovered by other scanners. Pre-populated with 445/TCP.

workercount

Specifies the number of parallel workers for the scan.

wsnetreuse

Internal parameter. Do not modify.