SSL Attacks

• SSL Server Test

  • https://www.ssllabs.com/ssltest/

Searching CT Logs

There are two popular options for searching CT logs:

Tool	Key Features	Use Cases	Pros	Cons
crt.sh	User-friendly web interface, simple search by domain, displays certificate details, SAN entries.	Quick and easy searches, identifying subdomains, checking certificate issuance history.	Free, easy to use, no registration required.	Limited filtering and analysis options.
Censys	Powerful search engine for internet-connected devices, advanced filtering by domain, IP, certificate attributes.	In-depth analysis of certificates, identifying misconfigurations, finding related certificates and hosts.	Extensive data and filtering options, API access.	Requires registration (free tier available).

Pull data from SSL

• data about which sites are protected can be in the SSL certificate

curl -s https://crt.sh/\?q\=inlanefreight.com\&output\=json | jq .

Filter by subdomain

curl -s https://crt.sh/\?q\=inlanefreight.com\&output\=json | jq . | grep name | cut -d":" -f2 | grep -v "CN=" | cut -d'"' -f2 | awk '{gsub(/\\n/,"\n");}1;' | sort -u

Get ip address for above subdomains

curl -s https://crt.sh/\?q\=inlanefreight.com\&output\=json | jq . | grep name | cut -d":" -f2 | grep -v "CN=" | cut -d'"' -f2 | awk '{gsub(/\\n/,"\n");}1;' | sort -u >> subdomainlist

for i in $(cat subdomainlist);do host $i | grep "has address" | grep inlanefreight.com | cut -d" " -f1,4;done

• can run shodan on the IP's