Subdomains are a mysterious part of the attack surface, as they represent additional entry points or potential targets that can be exploited to gain access to a network or system.
Why look for subdomains?
- They are often not as heavily guarded or protected.
- They effectively expand the attack surface.
- They can serve multiple functions, services, etc.
- They are unknown
Tools?
Source: https://securitycipher.com/docs/subdomain-enumeration-tools/
- subfinder
- amass
- Sublist3r
- chaos
- findomain
- etc...
Some extra options:
+knock.py -> installation is simple:
https://github.com/guelfoweb/knock
Options without installation, which are publicly available on the internet:
+subdomainfinder.c99
+securitytrails
Specifically on this last point, do you know any other similar tool?