Naabu - A Fast Port Scanner Written In Go With A Focus On Reliability And Simplicity


Naabu is a port scanning tool written in Go that allows you to enumerate valid ports for hosts in a fast and reliable manner. It is a really simple tool that does fast SYN/CONNECT scans on the host/list of hosts and lists all ports that return a reply.


Features

  • Fast And Simple SYN/CONNECT probe based scanning
  • Passive Port Enumeration using Shodan Internetdb API
  • Optimized for ease of use and lightweight on resources
  • Automatic IP deduplication for port scan
  • NMAP integration for service discovery
  • Multiple input support - STDIN/HOST/IP/CIDR
  • Multiple output format support - JSON/TXT/STDOUT

Usage

naabu -h

This will display help for the tool. Here are all the switches it supports.

open ports using shodan internetdb api OPTIMIZATION: -retries int number of retries for the port scan (default 3) -timeout int millisecond to wait before timing out (default 1000) -warm-up-time int time in seconds between scan phases (default 2) -ping ping probes for verification of host -verify validate the ports again with TCP verification DEBUG: -debug display debugging information -verbose, -v display verbose output -no-color, -nc disable colors in CLI output -silent display only results in output -version display version of naabu -stats display stats of the running scan -si, -stats-interval int number of seconds to wait between showing a statistics update (default 5)">
Usage:
./naabu [flags]

INPUT:
-host string[] hosts to scan ports for (comma-separated)
-list, -l string list of hosts to scan ports (file)
-exclude-hosts, -eh string hosts to exclude from the scan (comma-separated)
-exclude-file, -ef string list of hosts to exclude from scan (file)

PORT:
-port, -p string ports to scan (80,443, 100-200
-top-ports, -tp string top ports to scan (default 100)
-exclude-ports, -ep string ports to exclude from scan (comma-separated)
-ports-file, -pf string list of ports to exclude from scan (file)
-exclude-cdn, -ec skip full port scans for CDN's (only checks for 80,443)

RATE-LIMIT:
-c int general internal worker threads (default 25)
-rate int packets to send per second (d efault 1000)

OUTPUT:
-o, -output string file to write output to (optional)
-json write output in JSON lines format
-csv write output in csv format

CONFIGURATION:
-scan-all-ips, -sa scan all the IP's associated with DNS record
-scan-type, -s string type of port scan (SYN/CONNECT) (default "s")
-source-ip string source ip
-interface-list, -il list available interfaces and public ip
-interface, -i string network Interface to use for port scan
-nmap invoke nmap scan on targets (nmap must be installed) - Deprecated
-nmap-cli string nmap command to run on found results (-nmap-cli 'nmap -sV')
-r string list of custom resolver dns resolution (comma separated or from file)
-proxy string socks5 proxy
-resume resume scan using resume.cfg
-stream stream mode (disab les resume, nmap, verify, retries, shuffling, etc)
-passive display passive open ports using shodan internetdb api

OPTIMIZATION:
-retries int number of retries for the port scan (default 3)
-timeout int millisecond to wait before timing out (default 1000)
-warm-up-time int time in seconds between scan phases (default 2)
-ping ping probes for verification of host
-verify validate the ports again with TCP verification

DEBUG:
-debug display debugging information
-verbose, -v display verbose output
-no-color, -nc disable colors in CLI output
-silent display only results in output
-version display version of naabu
-stats display stats of the running scan
-si, -stats-interval int number of seconds to wait between showing a statistics u pdate (default 5)

Installation Instructions

Download the ready to run binary / docker or install with GO

Before installing naabu, make sure to install libpcap library:

sudo apt install -y libpcap-dev

Installing Naabu:

go install -v github.com/projectdiscovery/naabu/v2/cmd/[email protected]

Running Naabu

To run the tool on a target, just use the following command.

naabu -host hackerone.com

This will run the tool against hackerone.com. There are a number of configuration options that you can pass along with this command. The verbose switch -v can be used to display verbose information.

naabu -host hackerone.com

__
___ ___ ___ _/ / __ __
/ _ \/ _ \/ _ \/ _ \/ // /
/_//_/\_,_/\_,_/_.__/\_,_/ v2.0.3

projectdiscovery.io

[WRN] Use with caution. You are responsible for your actions
[WRN] Developers assume no liability and are not responsible for any misuse or damage.
[INF] Running SYN scan with root privileges
[INF] Found 4 ports on host hackerone.com (104.16.100.52)

hackerone.com:80
hackerone.com:443
hackerone.com:8443
hackerone.com:8080

The ports to scan for on the host can be specified via -p parameter. It takes nmap format ports and runs enumeration on them.

naabu -p 80,443,21-23 -host hackerone.com

By default, the Naabu checks for nmap's Top 100 ports. It supports following in-built port lists -

Flag Description
-top-ports 100 Scan for nmap top 100 port
-top-ports 1000 Scan for nmap top 1000 port
-p - Scan for full ports from 1-65535

You can also specify specific ports which you would like to exclude from the scan.

naabu -p - -exclude-ports 80,443

To run the naabu on a list of hosts, -list option can be used.

naabu -list hosts.txt

You can also get output in json format using -json switch. This switch saves the output in the JSON lines format.

naabu -host 104.16.99.52 -json

{"ip":"104.16.99.52","port":443}
{"ip":"104.16.99.52","port":80}

The ports discovered can be piped to other tools too. For example, you can pipe the ports discovered by naabu to httpx which will then find running http servers on the host.

echo hackerone.com | naabu -silent | httpx -silent

http://hackerone.com:8443
http://hackerone.com:443
http://hackerone.com:8080
http://hackerone.com:80

The speed can be controlled by changing the value of rate flag that represent the number of packets per second. Increasing it while processing hosts may lead to increased false-positive rates. So it is recommended to keep it to a reasonable amount.

Configuration file

Naabu supports config file as default located at $HOME/.config/naabu/config.yaml, It allows you to define any flag in the config file and set default values to include for all scans.

Nmap integration

We have integrated nmap support for service discovery or any additional scans supported by nmap on the found results by Naabu, make sure you have nmap installed to use this feature.

To use,nmap-cli flag can be used followed by nmap command, for example:-

echo hackerone.com | naabu -nmap-cli 'nmap -sV -oX nmap-output'
__
___ ___ ___ _/ / __ __
/ _ \/ _ \/ _ \/ _ \/ // /
/_//_/\_,_/\_,_/_.__/\_,_/ v2.0.0

projectdiscovery.io

[WRN] Use with caution. You are responsible for your actions
[WRN] Developers assume no liability and are not responsible for any misuse or damage.
[INF] Running TCP/ICMP/SYN scan with root privileges
[INF] Found 4 ports on host hackerone.com (104.16.99.52)

hackerone.com:443
hackerone.com:80
hackerone.com:8443
hackerone.com:8080

[INF] Running nmap command: nmap -sV -p 80,8443,8080,443 104.16.99.52

Starting Nmap 7.01 ( https://nmap.org ) at 2020-09-23 05:02 UTC
Nmap scan report for 104.16.99.52
Host is up (0.0021s latency).
PORT STATE SERVICE VERSION
80/tcp open http cloudflare
443/tcp open ssl/ht tps cloudflare
8080/tcp open http-proxy cloudflare
8443/tcp open ssl/https-alt cloudflare

CDN Exclusion

Naabu also supports excluding CDN IPs being port scanned. If used, only 80 and 443 ports get scanned for those IPs. This feature can be enabled by using exclude-cdn flag.

Currently cloudflare, akamai, incapsula and sucuri IPs are supported for exclusions.

Notes

  • Naabu is designed to scan ports on multiple hosts / mass port scanning.
  • As default naabu is configured with a assumption that you are running it from VPS.
  • We suggest tuning the flags / rate if running naabu from local system.
  • For best results, run naabu as root user.

naabu is made with

by the projectdiscovery team. Community contributions have made the project what it is. See the Thanks.md file for more details.

Naabu - A Fast Port Scanner Written In Go With A Focus On Reliability And Simplicity Naabu - A Fast Port Scanner Written In Go With A Focus On Reliability And Simplicity Reviewed by Zion3R on 5:30 PM Rating: 5