Knock is a python script, written by Gianni 'guelfoweb' Amato, designed to enumerate subdomains on a target domain through a wordlist.
For more information I have posted a documentation page. If you want to see how it works, you can see this sample output:
Simple Scan Zone Transfer Scan Wildcard Bypass
New: Knock is now available on BackBox 2, Italian distribution for Penetration Test.
In version 1.5 is enabled support to wildcard bypass.
Video of Knock in action
Common usage
This tool can be useful in black box pentest to find vulnerable subdomains. Like testing.domain.comCurrent features
Knock is targeted to:Scan subdomains DNS request for zone transfer DNS resolver Wildcard testing Wildcard bypass
Required
Python version 2.x DNSpython for Zone Transfer discovery
