Hacking, Hacking Tools, Vulnerability

testssl.sh – Tool to check cryptographic flaws and TLS/SSL Ciphers on any Ports

TLS/SSL vulnerabilities

testssl.sh is a free command line tool which checks a server’s administration on any port for the help of TLS/SSL ciphers, protocols and some TLS/SSL vulnerabilities.

Key features

1. Easy to install.
2. You can check with all port not only with 443.
3. Warnings if there is an issue with tests performed.
4. Compatible with Linux/BSD distribution
5. Supports more TLS extensions via sockets
6. TLS 1.3 support
7. Check for CAA RR
8. Check for OCSP must staple
9. Check for Certificate Transparency
10.Expect-CT Header Detection

How to use testssl.sh- TLS/SSL vulnerabilities

In this Kali Linux Tutorial we show how to work with testssl.sh and find all the cryptographic vulnerabilities. To download the tool.

To install testssl.sh

git clone –depth 1 https://github.com/drwetter/testssl.sh.git

To run the tool

[email protected]:~/testssl.sh# ./testssl.sh


To check for Heartbleed

[email protected]:~/testssl.sh# ./testssl.sh -H testdomain.com


Also Read Fast and Complete SSL Scanner to Find Mis-configurations affecting TLS/SSL

To check for POODLE

[email protected]:~/testssl.sh# ./testssl.sh -O testdomain.com


To perform a complete check

[email protected]:~/testssl.sh# ./testssl.sh testdomain.com


To perform check with smtp

[email protected]:~/testssl.sh# ./testssl.sh -t smtp testdomain.com


To see prefered SSL/TLS protocols

[email protected]:~/testssl.sh# ./testssl.sh -P testdomain.com


To test the vulnerabilities

[email protected]:~/testssl.sh# ./testssl.sh -U –sneaky testdomain.com


Developed By: drwetter

Source : GBHackers

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Founder and Editor-in-Chief of 'Professional Hackers India'. Technology Evangelist, Security Analyst, Cyber Security Expert, PHP Developer and Part time hacker.