Random channel

data/webcam/answerer.html

@@ -13,7 +13,7 @@ Status     : <span id="message">Please wait for the chat request to be accepted.
 	<div id="chat_area"></div>
 	<a href="http://metasploit.com/" target="_blank">Metasploit.com</a>
 	<script>
-		var channel = 'msfsinn3rtest123';
+		var channel = '=CHANNEL=';
 		var websocket = new WebSocket('ws://wsnodejs.jit.su:80');
 		var inSession = false;
 

data/webcam/offerer.html

@@ -12,7 +12,7 @@
 	</font></div>
 	<div id="chat_area"></div>
 	<script>
-		var channel = 'msfsinn3rtest123';
+		var channel = '=CHANNEL=';
 		var websocket = new WebSocket('ws://wsnodejs.jit.su:80');
 
 		websocket.onopen = function() {
@@ -55,7 +55,6 @@
 		};
 
 		window.onload = function() {
-			console.debug("onload");
 			getUserMedia(function(stream) {
 				peer.addStream(stream);
 				peer.startBroadcasting();

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

@@ -58,14 +58,16 @@ class Webcam
 
   def chat_request
     offerer_id = 'sinn3r_offer'
+    channel = Rex::Text.rand_text_alphanumeric(20)
+
     remote_browser_path = get_webrtc_browser_path
 
     if remote_browser_path.blank?
       raise RuntimeError, "Unable to find a suitable browser on the target machine"
     end
 
-    ready_status = init_video_chat(remote_browser_path, offerer_id)
-    connect_video_chat(offerer_id)
+    ready_status = init_video_chat(remote_browser_path, channel, offerer_id)
+    connect_video_chat(channel, offerer_id)
   end
 
   # Record from default audio source for +duration+ seconds;
@@ -137,10 +139,12 @@ 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, offerer_id)
+  def init_video_chat(remote_browser_path, channel, offerer_id)
     interface = load_interface('offerer.html')
     api       = load_api_code
 
+    interface = interface.gsub(/\=CHANNEL\=/, channel)
+
     tmp_dir = session.sys.config.getenv("TEMP")
 
     begin
@@ -176,7 +180,7 @@ class Webcam
   # @param offerer_id [String] The offerer's ID in order to join the video chat
   # @return void
   #
-  def connect_video_chat(offerer_id)
+  def connect_video_chat(channel, offerer_id)
     interface = load_interface('answerer.html')
     api       = load_api_code
 
@@ -188,6 +192,7 @@ class Webcam
     interface = interface.gsub(/\=WEBRTCAPIJS\=/, tmp_api.path)
     interface = interface.gsub(/\=RHOST\=/, rhost)
     interface = interface.gsub(/\=STARTTIME\=/, Time.now.to_s)
+    interface = interface.gsub(/\=CHANNEL\=/, channel)
 
     tmp_interface = Tempfile.new('answerer.html')
     tmp_interface.binmode