Merge pull request #36 from pirxthepilot/detect-tls

roca-detect-tls feature

README.md

@@ -157,12 +157,25 @@ Detection tool extracts information about the key which can be displayed:
 roca-detect.py --dump --flatten --indent  ~/.ssh/
 ```
 
+## TLS/SSL detection
+The `roca-detect-tls` detects certificates from remote TLS/SSL ports. Provide a file with a newline-delimited list of `address:port` entries and use that file as input.
+
+Example file: tls_list.txt
+```
+github.com:443
+google.com:443
+internal.example.com:8080
+```
+
+Then run:
+
+`roca-detect-tls tls_list.txt`
+
 ## Fake moduli
 
 It is possible to generate moduli that passes the moduli fingerprinting test but actually do not contain structure
 the factorization algorithm is using. Dlog moduli test do not mark those as positive.
 
-
 ## Advanced installation methods
 
 ### Virtual environment

roca/detect_tls.py

@@ -0,0 +1,156 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+TLS fingerprinting
+
+Reads from one or more text files that contain a newline-separated list of
+address:port entries. Example:
+
+    github.com:443
+    google.com:443
+    internal.example.com:8080
+
+
+Script requirements:
+
+    - See detect.py requirements
+
+"""
+
+import sys
+import argparse
+from detect import RocaFingerprinter, logger, LOG_FORMAT
+from ssl import get_server_certificate
+
+
+#
+# Main class
+#
+class RocaTLSFingerprinter(object):
+    """
+    TLS fingerprinter
+    """
+
+    def __init__(self):
+        self.roca = RocaFingerprinter()
+
+    def process_tls(self, data, name):
+        """
+        Remote TLS processing - one address:port per line
+        :param data:
+        :param name:
+        :return:
+        """
+        ret = []
+        try:
+            lines = [x.strip() for x in data.split('\n')]
+            for idx, line in enumerate(lines):
+                if line == '':
+                    continue
+                host,port = line.split(':')
+                pem_cert = self.get_server_certificate(host, port)
+                if pem_cert:
+                    sub = self.roca.process_pem_cert(pem_cert, name, idx)
+                    ret.append(sub)
+
+        except Exception as e:
+            logger.error('Error in file processing %s : %s' % (name, e))
+            self.trace_logger.log(e)
+        return ret
+
+    def get_server_certificate(self, host, port):
+        """
+        Gets the remote x.509 certificate
+        :param host:
+        :param port:
+        :return:
+        """
+        logger.info("Fetching server certificate from %s:%s" % (host,port))
+        try:
+            return get_server_certificate((host, int(port)))
+        except Exception as e:
+            logger.error('Error getting server certificate from %s:%s: %s' %
+                         (host, port, e))
+            return False
+
+    def process_inputs(self):
+        """
+        Processes input data
+        :return:
+        """
+        ret = []
+        files = self.args.files
+        if files is None:
+            return ret
+
+        for fname in files:
+            fh = open(fname, 'rb')
+            with fh:
+                data = fh.read()
+                sub = self.process_tls(data, fname)
+                ret.append(sub)
+
+        return ret
+
+    def work(self):
+        """
+        Entry point after argument processing.
+        :return:
+        """
+        self.roca.do_print = True
+        ret = self.process_inputs()
+
+        if self.args.dump:
+            self.roca.dump(ret)
+
+        if self.roca.found > 0:
+            logger.info('Fingerprinted keys found: %s' % self.roca.found)
+            logger.info('WARNING: Potential vulnerability')
+        else:
+            logger.info('No fingerprinted keys found (OK)')
+
+    def init_parser(self):
+        """
+        Init command line parser
+        :return:
+        """
+        parser = argparse.ArgumentParser(description='ROCA TLS Fingerprinter')
+
+        parser.add_argument('--debug', dest='debug', default=False, action='store_const', const=True,
+                            help='Debugging logging')
+
+        parser.add_argument('--dump', dest='dump', default=False, action='store_const', const=True,
+                            help='Dump all processed info')
+
+        parser.add_argument('--flatten', dest='flatten', default=False, action='store_const', const=True,
+                            help='Flatten the dump')
+
+        parser.add_argument('--indent', dest='indent', default=False, action='store_const', const=True,
+                            help='Indent the dump')
+
+        parser.add_argument('files', nargs=argparse.ZERO_OR_MORE, default=[],
+                            help='files to process')
+        return parser
+
+    def main(self):
+        """
+        Main entry point
+        :return:
+        """
+        parser = self.init_parser()
+        if len(sys.argv) < 2:
+            parser.print_usage()
+            sys.exit(0)
+        self.args = parser.parse_args()
+
+        self.work()
+
+
+def main():
+    app = RocaTLSFingerprinter()
+    app.main()
+
+
+if __name__ == "__main__":
+    main()

setup.py

@@ -78,6 +78,7 @@
     entry_points={
         'console_scripts': [
             'roca-detect = roca.detect:main',
+            'roca-detect-tls = roca.detect_tls:main',
         ],
     }
 )