Sudomy – Subdomain Enumeration and Analysis Tool

Stella Sebastian
Posted by Stella Sebastian December 26, 2020

superior_hosting_service

Sudomy – Subdomain Enumeration and Analysis Tool

sudomy.jpg

Sudomy is a subdomain enumeration tool, created using a bash script, to analyze domains and collect subdomains in a fast and comprehensive way.

Features

For a recent time, Sudomy has these 13 features:

  • Easy, light, fast, and powerful. A bash script is available by default in almost all Linux distributions. By using the bash script multiprocessing feature, all processors will be utilized optimally.
  • Subdomain enumeration process can be achieved by using active method or passive method
    • Active Method
      • Sudomy utilizes Gobuster tools because of its highspeed performance in carrying out the DNS Subdomain Bruteforce attack (wildcard support). The wordlist that is used comes from combined SecList (Discover/DNS) lists which contain around 3 million entries
    • Passive Method
      • By selecting good third-party sites, the enumeration process can be optimized. More results will be obtained with less time required. Sudomy can collect data from these well-curated 20 third-party sites:
https://dnsdumpster.com
  https://web.archive.org
  https://shodan.io
  https://virustotal.com
  https://crt.sh
  https://www.binaryedge.io
  https://securitytrails.com
  https://sslmate.com/certspotter
  https://censys.io
  https://threatminer.org
  http://dns.bufferover.run
  https://hackertarget.com
  

    Entrust Certificate Search


  https://www.threatcrowd.org
  https://riddler.io
  https://findsubdomains.com
  https://rapiddns.io/
  https://otx.alienvault.com/
  https://index.commoncrawl.org/
  https://urlscan.io/
  • Test the list of collected subdomains and probe for working HTTP or https servers. This feature uses a third-party tool, httprobe.
  • Subdomain availability test based on Ping Sweep and/or by getting HTTP status code.
  • The ability to detect virtual host (several subdomains which resolve to single IP Address). Sudomy will resolve the collected subdomains to IP addresses, then classify them if several subdomains resolve to a single IP address. This feature will be very useful for the next penetration testing/bug bounty process. For instance, in port scanning, single IP address won’t be scanned repeatedly
  • Performed port scanning from collected subdomains/virtualhosts IP Addresses
  • Testing Subdomain TakeOver attack
  • Taking Screenshots of subdomains
  • Identify technologies on websites
  • Data Collecting/Scraping open port from 3rd party (Default::Shodan), For right now just using Shodan [Future::Censys,Zoomeye]. More efficient and effective to collecting port from list ip on target [[ Subdomain > IP Resolver > Crawling > ASN & Open Port ]]
  • Collecting Juicy URL & Extract URL Parameter ( Resource Default::WebArchive, CommonCrawl, UrlScanIO)
  • Define the path for outputfile (specify an output file when completed)
  • Report output in HTML & CSV format

How Sudomy Works

Sudomy is using cURL library in order to get the HTTP Response Body from third-party sites to then execute the regular expression to get subdomains. This process fully leverages multi processors, more subdomains will be collected with less time consumption.

Publication

User Guide

Comparison

The following are the results of passive enumeration DNS testing of Sublist3r, Subfinder, and Sudomy. The domain that is used in this comparison is bugcrowd.com.

More Details
web application framework

Tags: