Simple script tool to extract all subdomains from crt.sh website. Output will be up to sub.sub.sub.subdomain.com
How to install
pip install -r requirments.txt
How to use it
python crtfinder.py -u domain.com
Results will be in text file contain all output subdomains.
It collects almost 2900 subdomains for the domain
yahoo.com only, you should take some of juicy subdomains and search for them also.
python crtfinder.py -u corp.yahoo.com
It will get back to you some of interesting subdomains in addition to the original subdomains.