Information gathering about websites is very important, to find juicy informations you need to digg a websites from main domain and also until subdomains. If the subdomain have vulnerability and you can exploit that, you will able to take over the main domain to. Because, main domain and subdomain is shared server usually.
To perform information gathering about subdomains or subdomains enumeration, i recommend a tool called “Sudomy – Subdomain Enumeration & Analysis“. This tool can help you find a record subdomains rapidly and also analyze a websites in comprehensive way. Coded by screetsec same developer with TheFatRat.
Overview
Sudomy is a subdomain enumeration tool, created using a bash script, to analyze domains and collect subdomains in fast and comprehensive way.
Features !
For recent time, Sudomy has these 9 features:
- Easy, light, fast and powerful. Bash script is available by default in almost all Linux distributions. By using 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 utilize Gobuster tools because of its highspeed performance in carrying out DNS Subdomain Bruteforce attack (wildcard support). The wordlist that is used comes from combined SecList (Discover/DNS) lists which contains around 3 million entries
- Passive Method
- By selecting the 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 16 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
- https://www.entrust.com/ct-search/
- https://www.threatcrowd.org
- https://riddler.io
- https://findsubdomains.com
- By selecting the 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 16 third-party sites:
- Active Method
- 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 virtualhost (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 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 Screenshotsof subdomains
- Report output in HTML or 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.
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.
| Sudomy | Subfinder | Sublister |
|---|---|---|
 |  |  |
Asciinema :
Installation
Sudomy is currently extended with the following tools. Instructions on how to install & use the application are linked below.
| Tools | License | Info |
|---|---|---|
| Gobuster | Apache License 2.0 | not mandatory |
| httprobe | Tom Hudson – | mandatory |
| nmap | GNU General Public License v2.0 | not mandatory |
Dependencies
Sudomy requires jq to run and pars. For more information, Download and install jq here
# Linux apt-get install jq nmap phantomjs # Mac brew cask install phantomjs brew install jq nmap
If you have a Go environment ready to go, it’s as easy as:
export GOPATH=$HOME/go export PATH=$PATH:$GOROOT/bin:$GOPATH/bin go get -u github.com/tomnomnom/httprobe go get -u github.com/OJ/gobuster
Download Sudomy From Github
# Clone this repository git clone --recursive https://github.com/screetsec/Sudomy.git # Go into the repository sudomy --help
Running in a Docker Container
# Pull an image from DockerHub
docker pull screetsec/sudomy:v1.1.0
# Run an image, you can run the image on custom directory but you must copy/download config sudomy.api on current directory
docker run -v "${PWD}/output:/usr/lib/sudomy/output" -v "${PWD}/sudomy.api:/usr/lib/sudomy/sudomy.api" -it --rm screetsec/sudomy:v1.1.0 [argument] Post Installation
API Key is needed before querying on third-party sites, such as Shodan, Censys, SecurityTrails, Virustotal, and BinaryEdge.
The API key setting can be done in sudomy.api file.
# Shodan # URL : http://developer.shodan.io # Example : # - SHODAN_API="VGhpc1M0bXBsZWwKVGhmcGxlbAo" SHODAN_API="" # Censys # URL : https://censys.io/register CENSYS_API="" CENSYS_SECRET="" # Virustotal # URL : https://www.virustotal.com/gui/ VIRUSTOTAL="" # Binaryedge # URL : https://app.binaryedge.io/login BINARYEDGE="" # SecurityTrails # URL : https://securitytrails.com/ SECURITY_TRAILS=""
Usage
___ _ _ _/ __|_ _ __| (_)(_)_ __ _ _\__ \ || / _ / __ \ ' \ || ||___/\_,_\__,_\____/_|_|_\_, ||__/ v{1.1.0#dev} by @screetsecSud⍥my - Fast Subdmain Enumeration and Analyzerhttp://github.com/screetsec/sudomyUsage: sud⍥my.sh [-h [--help]] [-s[--source]][-d[--domain=]]Example: sud⍥my.sh -d example.comsud⍥my.sh -s Shodan,VirusTotal -d example.comsud⍥my.sh -pS -rS -sC -nT -sS -d example.comOptional Arguments:-a, --all Running all Enumeration, no nmap & gobuster-b, --bruteforce Bruteforce Subdomain Using Gobuster (Wordlist: ALL Top SecList DNS)-d, --domain domain of the website to scan-h, --help show this help message-o, --html Make report output into HTML-s, --source Use source for Enumerate Subdomain-tO, --takeover Subdomain TakeOver Vulnerabilty Scanner-pS, --ping-sweep Check live host using methode Ping Sweep-rS, --resolver Convert domain lists to resolved IP lists without duplicates-sC, --status-code Get status codes, response from domain list-nT, --nmap-top Port scanning with top-ports using nmap from domain list-sS, --screenshot Screenshots a list of website-nP, --no-passive Do not perform passive subdomain enumeration--no-probe Do not perform httprobe
To use all 16 Sources and Probe for working http or https servers:
To use one of more source:
To use one or more plugins:
To use all plugins: testing host status, http/https status code, subdomain takeover and screenshots
To create report in HTML Format
HTML Report Sample:
Tools Overview
- Youtube Videos : Click here
Translations
Changelog
All notable changes to this project will be documented in this file.
Credits & Thanks
- Tom Hudson – Tomonomnom
- OJ Reeves – Gobuster
- Thomas D Maaaaz – Webscreenshot
- Daniel Miessler – SecList
- EdOverflow – can-i-take-over-xyz
- jerukitumanis – Docker Maintainer
- NgeSEC Community
- Gauli(dot)Net
- Bugcrowd & Hackerone
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