Create get_cert_info.py

programming_and_scripting_for_cybersecurity/recon_scripts/certificate_information/get_cert_info.py

@@ -0,0 +1,40 @@
+'''
+This script takes a domain as input and returns the SSL certificate information of the domain.
+Author: Omar Santos @santosomar
+'''
+
+# Import the necessary modules 
+import ssl
+import socket
+from pprint import pprint
+import argparse
+
+def get_certificate_info(hostname, port=443):
+    '''
+    get certificate information
+    :param hostname: hostname
+    :param port: port
+    :return: None
+    '''
+    context = ssl.create_default_context()
+    conn = context.wrap_socket(socket.socket(socket.AF_INET), server_hostname=hostname)
+    conn.settimeout(3.0)
+
+    try:
+        conn.connect((hostname, port))
+        cert = conn.getpeercert()
+        pprint(cert)
+    except Exception as e:
+        print(f"Could not retrieve certificate information: {e}")
+    finally:
+        conn.close()
+
+if __name__ == "__main__":
+    # Parse the command line arguments
+    parser = argparse.ArgumentParser(description='Get SSL certificate information of a domain.')
+    parser.add_argument('domain', type=str, help='Domain name to get the certificate information')
+    parser.add_argument('--port', type=int, default=443, help='Port number (default: 443)')
+    
+    args = parser.parse_args()
+    
+    get_certificate_info(args.domain, args.port)