Add script to calculate hash of favicon.ico for Shodan (#13)

* Add script to calculate hash of favicon.ico

* Remove '\n'

* Change variable name

Author: cravtos

Diff for: src/scripts/recon/shodan_favicon_hash/__main__.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+
+from base64 import encodebytes
+
+from mmh3 import hash
+from requests import get
+from requests.exceptions import RequestException
+
+from src.core.base.recon import ReconRunner, PossibleKeys
+from src.core.utils.response import ScriptResponse
+from src.core.utils.validators import validate_kwargs
+
+
+class Runner(ReconRunner):
+    def __init__(self, logger: str = __name__):
+        super(Runner, self).__init__(logger)
+
+    @validate_kwargs(PossibleKeys.KEYS)
+    def run(self, *args, **kwargs):
+        """
+        Returns hash of favicon.ico of given url.
+        :param args: args from core runner
+        :param kwargs: kwargs from core runner
+        :return: ScriptResponse message
+        """
+        url = kwargs.get("url")
+
+        try:
+            response = get(f"{url}/favicon.ico")
+        except RequestException as req_err:
+            return ScriptResponse.error(
+                result=None,
+                message=f"Can't connect to {url}!"
+                        f"Error message: {req_err}",
+            )
+
+        favicon = encodebytes(response.content)
+        favicon_hash = hash(favicon)
+
+        return ScriptResponse.success(
+            result=favicon_hash,
+            message=f"Successfully made favicon hash of {url}! "
+            f"Use https://www.shodan.io/search?query=http.favicon.hash:{favicon_hash}",
+        )

Diff for: src/scripts/recon/shodan_favicon_hash/requirements.txt

@@ -0,0 +1,7 @@
+certifi==2020.6.20
+chardet==3.0.4
+idna==2.10
+mmh3==2.5.1
+pkg-resources==0.0.0
+requests==2.24.0
+urllib3==1.25.9