# SSL Checker #### Python script that collects SSL/TLS information from hosts ## About It's a simple script running in python that collects SSL/TLS information then it returns the group of information in JSON. It can also connect through your specified SOCKS server. One of the good things about this script is that it will fully analyze the SSL certificate for security issues and will include the report in the output, CSV, or a JSON file. ## Requirements You only need to install pyOpenSSL: `pip install pyopenssl` or `pip install -r requirements.txt` ## Usage ``` ./ssl_checker.py -h usage: ssl_checker.py (-H [HOSTS [HOSTS ...]] | -f HOST_FILE) [-s HOST:PORT] [-c FILENAME.CSV] [-j] [-J] [-a] [-v] [-h] Collects useful information about given host's SSL certificates. optional arguments: -H [HOSTS [HOSTS ...]], --host [HOSTS [HOSTS ...]] Hosts as input separated by space -f HOST_FILE, --host-file HOST_FILE Hosts as input from file -s HOST:PORT, --socks HOST:PORT Enable SOCKS proxy for connection -c FILENAME.CSV, --csv FILENAME.CSV Enable CSV file export -j, --json Enable JSON in the output -J, --json-save Enable JSON export individually per host -a, --analyze Enable SSL security analysis on the host -v, --verbose Enable verbose to see what is going on -h, --help Show this help message and exit ``` Port is optional here. The script will use 443 if not specified. `-f, --host-file` File containing hostnames for input `-H, --host ` Enter the hosts separated by space `-s, --socks ` Enable connection through SOCKS server `-c, --csv ` Enable CSV file export by specifying filename.csv after this argument `-j, --json ` Use this if you want to only have the result in JSON `-J, --json-save` Use this if you want to save as JSON file per host `-a, --analyze` This argument will include security analyze on the certificate. Takes more time. No result means failed to analyze. `-v, --verbose` Shows more output. Good for troubleshooting. `-h, --help` Shows the help and exit ## Censored? No problem. Pass `-s/--socks` argument to the script with `HOST:PORT` format to connect through SOCKS proxy. ``` narbeh@narbeh-xps:~/ssl-checker$ ./ssl_checker.py -H facebook.com +-------------------+ |Analyzing 1 host(s)| +-------------------+ [-] facebook.com Failed: [Errno 111] Connection refused +------------------------------------------------------+ | Successful: 0 | Failed: 1 | Duration: 0:00:00.710470 | +------------------------------------------------------+ narbeh@narbeh-xps:~/ssl-checker$ ./ssl_checker.py -H facebook.com -s localhost:9050 +-------------------+ |Analyzing 1 host(s)| +-------------------+ [+] facebook.com Issued domain: *.facebook.com Issued by: DigiCert Inc Valid from: 2017-12-15 Valid to: 2019-03-22 (334 days left) Validity days: 462 Certificate S/N: 14934250041293165463321169237204988608 Certificate version: 2 Certificate algorithm: sha256WithRSAEncryption Expired: False +------------------------------------------------------+ | Successful: 1 | Failed: 0 | Duration: 0:00:00.710470 | +------------------------------------------------------+ ``` ## Example ``` narbeh@narbeh-laptop:~/ssl-checker$ ./ssl_checker.py -H time.com github.com:443 +---------------------+ | Analyzing 2 host(s) | +---------------------+ [+] time.com ------------- Issued domain: time.com Issued to: None Issued by: Amazon (US) Valid from: 2018-11-07 Valid to: 2019-12-07 (159 days left) Validity days: 395 Certificate S/N: 10018094209647532371913518187860771165 Certificate SHA1 FP: 64:C4:2E:AF:38:2A:28:64:A0:A8:B8:6B:02:05:86:1F:E7:F6:E5:FF Certificate version: 2 Certificate algorithm: sha256WithRSAEncryption Expired: False Certificate SAN's: \_ DNS:time.com \_ DNS:*.time.com [+] github.com --------------- Issued domain: github.com Issued to: GitHub, Inc. Issued by: DigiCert Inc (US) Valid from: 2018-05-08 Valid to: 2020-06-03 (338 days left) Validity days: 757 Certificate S/N: 13324412563135569597699362973539517727 Certificate SHA1 FP: CA:06:F5:6B:25:8B:7A:0D:4F:2B:05:47:09:39:47:86:51:15:19:84 Certificate version: 2 Certificate algorithm: sha256WithRSAEncryption Expired: False Certificate SAN's: \_ DNS:github.com \_ DNS:www.github.com +------------------------------------------------------+ | Successful: 2 | Failed: 0 | Duration: 0:00:01.429145 | +------------------------------------------------------+ ``` ## Security Analyze By passing `-a/--analyze` to the script, it will scan the certificate for security issues and vulnerabilities. It will also mark a grade for the certificate. **This will take more time to finish.** ``` narbeh@narbeh-xps:~/ssl-checker$ ./ssl_checker.py -H narbeh.org:443 -a +---------------------+ | Analyzing 1 host(s) | +---------------------+ Warning: -a/--analyze is enabled. It takes more time... [+] narbeh.org Issued domain: narbeh.org Issued to: None Issued by: Let's Encrypt (US) Valid from: 2018-04-21 Valid to: 2018-07-20 (88 days left) Validity days: 90 Certificate S/N: 338163108483756707389368573553026254634358 Certificate version: 2 Certificate algorithm: sha256WithRSAEncryption Certificate grade: A Poodle vulnerability: False Heartbleed vulnerability: False Hearbeat vulnerability: True Freak vulnerability: False Logjam vulnerability: False Drown vulnerability: False Expired: False +------------------------------------------------------+ | Successful: 1 | Failed: 0 | Duration: 0:00:01.429145 | +------------------------------------------------------+ ``` ## JSON And CSV Output Example only with the `-j/--json` argument which shows the JSON only. Perfect for piping to another tool. ``` narbeh@narbeh-xps:~/ssl-checker$ ./ssl_checker.py -j -H narbeh.org:443 test.com {"narbeh.org": {"issued_to": "narbeh.org", "cert_sans": "DNS:narbeh.org", "valid_till": "2019-12-26", "valid_from": "2019-09-27", "issuer_ou": null, "days_left": 25, "cert_ver": 2, "tcp_port": 443, "cert_alg": "sha256WithRSAEncryption", "issued_o": null, "cert_exp": false, "cert_sha1": "05:52:4E:89:1E:98:1D:40:C1:41:F4:DD:F7:51:86:20:27:CF:E7:7F", "issuer_c": "US", "issuer_cn": "Let's Encrypt Authority X3", "issuer_o": "Let's Encrypt", "validity_days": 90, "cert_sn": 293690843427182569577385918507679703674563}} ``` CSV export is also easy. After running the script with `-c/--csv` argument and specifying `filename.csv` after it, you'll have something like this: ``` narbeh@narbeh-xps:~/ssl-checker$ cat domain.csv narbeh.org issued_to,narbeh.org valid_till,2018-07-20 valid_from,2018-04-21 issuer_ou,None cert_ver,2 cert_alg,sha256WithRSAEncryption cert_exp,False issuer_c,US issuer_cn,Let's Encrypt Authority X3 issuer_o,Let's Encrypt validity_days,90 cert_sn,338163108483756707389368573553026254634358 ``` # Docker If you want to run this script via docker, simply do create your image and run once: ``` $ docker build -t ssl-checker . $ docker run -it --rm ssl-checker -H twitter.com ``` ## Todo - Enable timeout for connections and handshakes - HTML export ability - Make print_status cleaner and smarter ### Author Narbeh Arakil https://narbeh.org