Monday 11 February 2019

GoScan - An Interactive Network Scanner

GoScan- An Interactive Network Scanner

GoScan is an interactive network scanner client, featuring auto-completion, which provides abstraction and automation over nmap.

GoScan can now be used to perform host discovery, port scanning, and service enumeration not only in situations where being stealthy is not a priority and time is limited (think at CTFs, OSCP, exams, etc.), but also (with a few tweaks in its configuration) during professional engagements.

GoScan is also particularly suited for unstable environments (think unreliable network connectivity, lack of "screen", etc.), given that it fires scans and maintain their state in an SQLite database.

Scans run in the background (detached from the main thread), so even if connection to the box running GoScan is lost, results can be uploaded asynchronously (more on this below). That is, data can be imported into GoScan at different stages of the process, without the need to restart the entire process from scratch if something goes wrong.

In addition, the Service Enumeration phase integrates a collection of other tools (e.g., EyeWitness, Hydra, nikto, etc.), each one tailored to target a specific service.


Binary installation (Recommended)
Binaries are available from the Release page.

# Linux (64bit)
$ wget
$ unzip

# Linux (32bit)
$ wget
$ unzip

# After that, place the executable in your PATH
$ chmod +x goscan
$ sudo mv ./goscan /usr/local/bin/goscan

Build from source

$ git clone
$ cd goscan/goscan/
$ make setup
$ make build

To create a multi-platform binary, use the cross command via make:

$ make cross


$ git clone
$ cd goscan/
$ docker-compose up --build


GoScan supports all the main steps of network enumeration:

Step Commands

1. Load targets
  • Add a single target via the CLI (must be a valid CIDR): load target SINGLE <IP/32>
  • Upload multiple targets from a text file or folder: load target MULTI <path-to-file>

2. Host Discovery
  • Perform a Ping Sweep: sweep <TYPE> <TARGET>
  • Or load results from a previous discovery:
> Add a single alive host via the CLI (must be a /32): load alive SINGLE <IP>
> Upload multiple alive hosts from a text file or folder: load alive MULTI <path-to-file>

3. Port Scanning
  • Perform a port scan: portscan <TYPE> <TARGET>
  • Or upload nmap results from XML files or folder: load portscan <path-to-file>

4. Service Enumeration
  • Dry Run (only show commands, without performing them): enumerate <TYPE> DRY <TARGET>
  • Perform enumeration of detected services: enumerate <TYPE> <POLITE/AGGRESSIVE> <TARGET>

5. Special Scans
  • EyeWitness
Take screenshots of websites, RDP services, and open VNC servers (KALI ONLY): special eyewitness needs to be in the system path
Extract (Windows) domain information from enumeration data
special domain <users/hosts/servers>
  • DNS
Enumerate DNS (nmap, dnsrecon, dnsenum): special dns DISCOVERY <domain>
Bruteforce DNS: special dns BRUTEFORCE <domain>
Reverse Bruteforce DNS: special dns BRUTEFORCE_REVERSE <domain> <base_IP>

  • Show results: show <targets/hosts/ports>
  • Automatically configure settings by loading a config file: set config_file <PATH>
  • Change the output folder (by default ~/goscan): set output_folder <PATH>
  • Modify the default nmap switches: set nmap_switches <SWEEP/TCP_FULL/TCP_STANDARD/TCP_VULN/UDP_STANDARD> <SWITCHES>
  • Modify the default wordlists: set_wordlists <FINGER_USER/FTP_USER/...> <PATH>

External Integrations

The Service Enumeration phase currently supports the following integrations:

       WHAT        INTEGRATION
  • ARP    nmap
  • DNS    nmap, dnsrecon, dnsenum, host
  • FINGER     nmap, finger-user-enum
  • FTP    nmap, ftp-user-enum, hydra [AGGRESSIVE]
  • HTTP    nmap, nikto, dirb, EyeWitness, sqlmap [AGGRESSIVE], fimap [AGGRESSIVE]
  • RDP    nmap, EyeWitness
  • SMB    nmap, enum4linux, nbtscan, samrdump
  • SMTP    nmap, smtp-user-enum
  • SNMP    nmap, snmpcheck, onesixtyone, snmpwalk
  • SSH    hydra [AGGRESSIVE]
  • SQL    nmap
  • VNC    EyeWitness


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