Added docs and additional dialects

Author: loftwing

documentation/modules/auxiliary/scanner/smb/smb1.md

@@ -0,0 +1,55 @@
+# Description
+This module scans for hosts that support the SMBv1 protocol.  It works by sending an SMB_COM_NEGOTATE request to each host specified in RHOSTS and claims that it only supports the following SMB dialects:
+```PC NETWORK PROGRAM 1.0
+LANMAN1.0
+Windows for Workgroups 3.1a
+LM1.2X002
+LANMAN2.1
+NT LM 0.12
+```
+If the SMB server has SMBv1 enabled it will respond to the request with a dialect selected.
+If the SMB server does not support SMBv1 a RST will be sent.
+
+___
+# Usage
+
+The following is an example of its usage, where x.x.x.x allows SMBv1 and y.y.y.y does not.
+
+#### A host that does support SMBv1.
+
+```
+msf auxiliary(smb1) > use auxiliary/scanner/smb/smb1
+msf auxiliary(smb1) > set RHOSTS x.x.x.x
+RHOSTS => x.x.x.x
+msf auxiliary(smb1) > run
+
+[+] x.x.x.x:445        - x.x.x.x supports SMBv1 dialect.
+[*] Scanned 1 of 1 hosts (100% complete)
+[*] Auxiliary module execution completed
+msf auxiliary(smb1) > services -S x.x.x.x
+
+Services
+========
+
+host        port  proto  name  state  info
+----        ----  -----  ----  -----  ----
+10.10.2.99  445   tcp    smb1  open
+```
+
+#### A host that does not support SMBv1
+
+```
+msf auxiliary(smb1) > use auxiliary/scanner/smb/smb1
+msf auxiliary(smb1) > set RHOSTS y.y.y.y
+RHOSTS => 10.10.48.14
+msf auxiliary(smb1) > run
+
+[*] Scanned 1 of 1 hosts (100% complete)
+[*] Auxiliary module execution completed
+```
+___
+
+
+## Options
+
+The only option is RHOSTS, which can be specified as a single IP, hostname, or an IP range in CIDR notation or range notation.  It can also be set using hosts from the database using ```hosts -R```.

modules/auxiliary/scanner/smb/smb1.rb

@@ -34,7 +34,12 @@ def run_host(ip)
       connect
 
       # Only accept NT LM 0.12 dialect and WfW3.0
-      dialects = ['NT LM 0.12']
+      dialects = ['PC NETWORK PROGRAM 1.0',
+                  'LANMAN1.0',
+                  'Windows for Workgroups 3.1a',
+                  'LM1.2X002',
+                  'LANMAN2.1',
+                  'NT LM 0.12']
       data     = dialects.collect { |dialect| "\x02" + dialect + "\x00" }.join('')
 
       pkt = Rex::Proto::SMB::Constants::SMB_NEG_PKT.make_struct