naabu

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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

naabu

  • Simple and modular code base making it easy to contribute.
  • Fast And Simple SYN/CONNECT probe based scanning.
  • Multiple Output formats supported (JSON, File, Stdout)
  • Optimized for ease of use and lightweight on resources
  • Stdin and stdout support for integrating in workflows
  • Automatic handling of duplicate hosts between multiple subdomains
  • Multiple input type support including HOST/IP/CIDR notation.

Usage

▶ naabu -h

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

Flag Description Example
c Worker threads for fqdn to ip resolution naabu -c 25
config Configuration file for naabu naabu -config naabu.conf
p Ports to scan (80,443, 100-200) naabu -p –
top-ports Top Ports to scan (default top 100 naabu -top-ports 1000
host host/domain/CIDR to scan ports for naabu -host 192.168.0.1/24
iL File containing list of hosts to enumerate ports naabu -iL hosts.txt
ports-file File containing ports to enumerate for on hosts naabu -ports-file ports.txt
exclude-cdn Skip full port scans for CDNs (only checks for 80,443) naabu -exclude-cdn
exclude-hosts Skip port scans for given hosts naabu -exclude-hosts 192.168.0.1/24
exclude-file Skip port scans for given hosts in file naabu -exclude-file exclude.txt
exclude-ports Skip port scans on hosts for given ports naabu -exclude-ports 22,80,443
nmap nmap scans to run on results (works with config file) naabu -nmap
nmap-cli nmap scans to run on results naabu -nmap-cli ‘nmap -sV’
o File to write output to (optional) naabu -o output.txt
json Write output in JSON lines Format naabu -json
rate Rate of port scan probes per requests naabu -rate 1000
interface Network Interface to use for port scan naabu -interface eth0
interface-list List available interfaces and public ip naabu -interface-list
no-color Don’t Use colors in output naabu -no-color
retries Number of retries for the port scan probe (default 3) naabu -retries 10
silent Print found ports only in output naabu -silent
source-ip Source IP naabu -source-ip 10.10.10.10
s Scan Type (s – SYN, c – CONNECT) naabu -s c
timeout Millisecond to wait before timing out (default 700) naabu -timeout 700
verify Validate the ports again with TCP verification naabu -verify
debug Enable debugging information naabu -debug
version Show version of naabu naabu -version
warm-up-time Time in seconds between scan phases (default 2) naabu -warm-up-time

Installation Instructions

From Binary

The installation is easy. You can download the pre-built binaries for your platform from the releases page. Extract them using tar, move it to your $PATHand you’re ready to go.

Download latest binary from https://github.com/projectdiscovery/naabu/releases

▶ tar -xvf naabu-linux-amd64.tar
▶ cp naabu-linux-amd64 /usr/local/bin/naabu
▶ naabu -version

From Source

naabu requires go1.14+ to install successfully and have libpcap-dev installed on the system.

To install libpcap-dev:-

apt install -y libpcap-dev
▶ GO111MODULE=on go get -v github.com/projectdiscovery/naabu/v2/cmd/naabu
▶ naabu -version

From Github

▶ git clone https://github.com/projectdiscovery/naabu.git; cd naabu/v2/cmd/naabu; go build; cp naabu /usr/local/bin/; naabu -version

From Docker

You can use the official dockerhub image at naabu. Simply run –

▶ docker pull projectdiscovery/naabu

The above command will pull the latest tagged release from the dockerhub repository.

  • After pulling / building the container using either way, run the following –
docker run -it projectdiscovery/naabu -version

For example, this runs the tool against hackerone.com and output the results to your host file system –

docker run -it projectdiscovery/naabu -host hackerone.com > hackerone.com.txt

Windows

Windows version is currently not usable without docker.

The docker install instructions are identical to the ones for other platforms. See the From Docker section for install instructions on Windows.

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 –

  • -top-ports 100 => Checks for nmap top 100 ports.
  • -top-ports 1000 => Checks for nmap top 1000 ports.
  • -p - => Checks for all 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

The o flag can be used to specify an output file.

▶ naabu -host hackerone.com -o output.txt

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

▶ naabu -iL 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 hackerone.com -json

{"host":"hackerone.com","ip":"104.16.99.52","port":8443}
{"host":"hackerone.com","ip":"104.16.99.52","port":80}
{"host":"hackerone.com","ip":"104.16.99.52","port":443}
{"host":"hackerone.com","ip":"104.16.99.52","port":8080}

Hosts can also be piped to naabu and port enumeration can be ran on them. For example –

echo hackerone.com | naabu
▶ cat targets.txt | naabu

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

If you want a second layer validation of the ports found, you can instruct the tool to make a TCP connection for every port and verify if the connection succeeded. This method is very slow, but is really reliable. This is similar to using nmap as a second layer validation

▶ naabu -host hackerone.com -verify

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

We have added support for config file, it allows each and every flag to define in config file, so you don’t have to write them everytime, it’s optional and not used on default run, default location of config file is $HOME/.config/naabu/naabu.conf, custom config file can be provided using config flag.

Example config file
# Number of retries
# retries: 1
# Packets rate
# rate: 100
# Timeout is the seconds to wait for ports to respond
# timeout: 5
# Hosts are the host to find ports for
# host:
# 	- 10.10.10.10
# Ports is the ports to use for enumeration
# ports:
# 	- 80
# 	- 100
# ExcludePorts is the list of ports to exclude from enumeration
# exclude-ports:
# 	- 20
# 	- 30
# Verify is used to check if the ports found were valid using CONNECT method
# verify: false
# Ips or cidr to be excluded from the scan
# exclude-ips:
# 	- 1.1.1.1
# 	- 2.2.2.2
# Top ports list
# top-ports: 100
# Attempts to run as root
# privileged: true
# Drop root privileges
# unprivileged: true
# Excludes ip of knows CDN ranges
# exclude-cdn: true
# SourceIP to use in TCP packets
# source-ip: 10.10.10.10
# Interface to use for TCP packets
# interface: eth0
# WarmUpTime between scan phases
# warm-up-time: 2
# nmap command to invoke after scanninginvoke after scanning
# nmap: nmap -sV

Nmap integration

We have integrated nmap support with nmap and nmap-cli flag, in config file you can define any nmap command you wish to run on the result of naabu, make sure you have nmap installed to use this feature.

To make use of nmap flag, make sure to remove the comments from the config file at $HOME/.config/naabu/naabu.conf

We also added nmap-cli flag that let you run nmap commands directly on the results of naabu without making use of config file.

echo hackerone.com | naabu -nmap-cli 'nmap -sV -oX naabu-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/https     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 to tune 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.

GitHub

https://github.com/projectdiscovery/naabu