Responsible Disclosure Email Gathering

Purpose

You may have found a vulnerability on a host but the said host/org does not have an active program on HackerOne or BugCrowd. If this is the case this workflow is for you! Broadly it will crawl the website and look for any security related emails from which you can submit your findings.

Prerequisites

• Katana
• Nuclei
• Active internet connection

Process

This workflow will do the following:

1. Crawl the target host using Katana
2. The output from Katana will be parsed through to Nuclei
3. The nuclei template will run and fetch emails based on the below regex:

   extractors:
      - type: regex
        part: body
        regex:
          - "(security|responsible-disclosure|responsibledisclosure|sec|csirt|cert|irt|vulnerability)@[A-Za-z0-9_-]+[.](com|org|net|io|gov|co|co.uk|com.mx|com.br|com.sv|co.cr|com.gt|com.hn|com.ni|com.au|com.cn)"

Note:

• Crawling is scoped to root domain name and all subdomains with the use of the -fs rdn flag

Commands

Single domain

echo domain.com | katana -fd rdn -silent | nuclei -t rd-extractor.yaml -stats -silent

List of domains

Create a new input.txt file with a list of domains - 1 per line

Then run the following:

cat input.txt | katana -fd rdn -silent | nuclei -t rd-extractor.yaml -stats -silent -o output.txt

Contact

If you have any questions feel free to reach out to me on Signal or via email: rishi@rxerium.com.