1. Netbios Enumeration (Port 137)
used for file and printer sharing. port 137. Netbios name 16 characters. 15 chars define name and 16th character type of service. Port 137 is utilized by the NetBIOS Name service.
NetBIOS stands for Network Basic Input Output System. Windows uses NetBIOS for file and printer sharing. A NetBIOS name is a unique computer name assigned to Windows systems, comprising a 16-character ASCII string that identifies the network device over TCP/IP. The first 15 characters are used for the device name, and the 16th is reserved for the service or name record type.
1. Perform Netbios enumeration with windows command line
check the name
nbtstat -a 192.168.18.110
check the contents of Netbios cache
nbtstat -c
enumerate shares without creating share
net use
2. Netbios enumerator
Windows application
3. Netbios enumeration with NSE scripts
nmap -sV -v --script nbstat.nse 192.168.18.110
nmap -sU -p 137 --script nbstat.nse 192.168.18.110
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