Initial commit for v1.0 using mitmproxy instead of twisted

Added a plugin system to Net-Creds so you can now add your own parsers,
api hook names might change between now and the offcial release
(will submit a PR to the original repo once completed)

The main MITM HTTP Proxy now uses mitmproxy which is a big deal, cuts
the code down by an insane amount, no more twisted! yay!

Basic plugin have been re-wrote for the new proxy engine

Since we are using mitmproxy we have out of the box support for SSL/TLS!

plugins/upsidedownternet.py

@@ -0,0 +1,23 @@
+import cStringIO
+from PIL import Image
+from libmproxy.models import decoded
+from plugins.plugin import Plugin
+
+class Upsidedownternet(Plugin):
+    name = 'Upsidedownternet'
+    optname = 'upsidedownternet'
+    desc = 'Flips images 180 degrees'
+    version = '1.0'
+
+    def response(self, context, flow):
+        if flow.response.headers.get("content-type", "").startswith("image"):
+            with decoded(flow.response):  # automatically decode gzipped responses.
+                try:
+                    s = cStringIO.StringIO(flow.response.content)
+                    img = Image.open(s).rotate(180)
+                    s2 = cStringIO.StringIO()
+                    img.save(s2, "png")
+                    flow.response.content = s2.getvalue()
+                    flow.response.headers["content-type"] = "image/png"
+                except:  # Unknown image types etc.
+                    pass