nmap written in Go

This is a submission of Team KnoxNaman for Machine Problem 2 of EE 298-K Information Security class

• Romelio Tavas Jr. @bongtavas
• Rene Josiah Quinto @rjmquinto
• Josen Daniel De Leon @jddl68

• TCP SYN Scan
• UDP Scan - Port 53 DNS, Port 161 SNMP (Enable through 'udp' flag)
• Service/Banner Grabbing
• OS Detection

go build -o gonmap main.go

Note: sudo is needed to be able to write directly to the wire

sudo ./gonmap -sS -sU -p <comma-separted-ports> <hostname>

can be the following forms:

• Hostname e.g. pleni.upd.edu.ph
• IP Address e.g. 202.92.128.181
• IP range e.g. 202.92.128.1-254
• IP CIDR block e.g. 202.92.128.0/24

Use flag -sS to use TCP SYN scanning Ex:

sudo ./gonmap -sS -p 80,443,22 google.com 

You can also specify port range using the '-' delimiter

sudo ./gonmap -sS -p 1-22,443-600,5443 google.com

If you don't specify a port argument, the default 1000 ports of nmap will be used.

Use flag -sU to use UDP scanning

sudo ./gonmap -sU 8.8.8.8

sudo ./gonmap -sU demo.snmplabs.com