#1 Add nessus analyzer

analyzers/Nessus/Nessus.json

@@ -0,0 +1,11 @@
+{
+    "name": "Nessus",
+    "version": "1.0",
+    "baseConfig": "Nessus",
+    "config": {
+        "check_tlp": false
+    },
+    "description": "Nessus scanner",
+    "dataTypeList": ["ip", "fqdn"],
+    "command": "Nessus/nessus.py"
+}

analyzers/Nessus/nessus.py

@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+# encoding: utf-8
+
+import time
+import socket
+import json
+
+from cortexutils.analyzer import Analyzer
+from nessrest import ness6rest
+from netaddr import IPNetwork, IPAddress
+
+class NessusAnalyzer(Analyzer):
+
+    def __init__(self):
+        Analyzer.__init__(self)
+        self.url = self.getParam(
+            'config.url', None, 'Missing Nessus scanner URL')
+        self.login = self.getParam(
+            'config.login', None, 'Missing Nessus scanner login')
+        self.password = self.getParam(
+            'config.password', None, 'Missing Nessus scanner password')
+        self.policy = self.getParam(
+            'config.policy', None, 'Missing Nessus scanner policy')
+        self.ca_bundle = self.getParam(
+            'config.ca_bundle')
+        self.allowed_networks = self.getParam(
+            'config.allowed_networks')
+
+    def summary(self, raw):
+        summary = {}
+        if ("vulnerabilities" in raw):
+            count = [ 0, 0, 0, 0, 0 ]
+            for vuln in raw["vulnerabilities"]:
+                count[vuln["severity"]] += 1
+            summary["info"]     = count[0]
+            summary["low"]      = count[1]
+            summary["medium"]   = count[2]
+            summary["high"]     = count[3]
+            summary["critical"] = count[4]
+        return summary
+
+    def run(self):
+        Analyzer.run(self)
+
+        data = self.getParam('data', None, 'Data is missing')
+
+        if self.data_type != 'fqdn' and self.data_type != 'ip':
+            self.error('Invalid data type')
+
+        if self.allowed_networks is not None:
+            if self.data_type == 'fqdn':
+                address = IPAddress(socket.gethostbyname(data))
+            else:
+                address = IPAddress(data)
+            if not any(address in IPNetwork(network)
+                for network in self.allowed_networks):
+                self.error('Invalid target: not in any allowed network')
+
+        scanner_args = {
+            'url': self.url, 'login': self.login, 'password': self.password }
+        if self.ca_bundle is not None:
+            scanner_args.update({'ca_bundle': self.ca_bundle})
+        else:
+            scanner_args.update({'insecure': True})
+
+        try:
+            scanner = ness6rest.Scanner(**scanner_args)
+            scanner.policy_set(name=self.policy)
+            scanner.scan_add(targets=data, name="cortex scan for " + data)
+
+            self._run_scan(scanner)
+            results = self._get_scan_results(scanner)
+            self._delete_scan(scanner)
+        except Exception as ex:
+            self.error('Scanner error: %s' % ex)
+
+        self.report(results)
+
+    def _run_scan(self, scanner):
+        scanner.action(
+            action="scans/" + str(scanner.scan_id) + "/launch", method="POST")
+
+        scan_uuid = scanner.res["scan_uuid"]
+
+        running = True
+        counter = 0
+
+        while running:
+            scanner.action(
+                action="scans?folder_id=" + str(scanner.tag_id), method="GET")
+
+            for scan in scanner.res["scans"]:
+                if (scan["uuid"] == scan_uuid
+                        and (scan['status'] == "running" or scan['status'] == "pending")):
+                    time.sleep(2)
+                    counter += 2
+
+                if (scan["uuid"] == scan_uuid
+                        and scan['status'] != "running" and scan['status'] != "pending"):
+                    running = False
+
+    def _get_scan_results(self, scanner):
+        result = scanner.action(
+            "scans/" + str(scanner.scan_id), method="GET", download=True)
+        return json.loads(result)
+
+    def _delete_scan(self, scanner):
+        scanner.action(
+            "scans/" + str(scanner.scan_id), method="DELETE")
+
+if __name__ == '__main__':
+    NessusAnalyzer().run()

analyzers/Nessus/requirements.txt

@@ -0,0 +1,2 @@
+cortexutils
+nessrest