首先说下整个授权流程：
在客户端网页中会不断向服务器发送https连接，并且这里传输很少的数据之后就断开连接了，下面看下微信网页中这个login1c709c.js文件：
(function($, _aoWin) {
_aoWin.QRLogin = {};
_aoWin.LoginLog = ;
var _sBaseHost = ,
_oLoginQrCodeImg = document.getElementById(loginQrCode);
if (document.domain == qq.com) {
_sBaseHost = weixin.qq.com;
} else if(location.hostname.match(/(wechat\.com)$/)){
_sBaseHost = wechat.com;
}else{
_sBaseHost = wechatapp.com;
}
var show_tip = 1,
_sCurUUId,
_oResetTimeout,
_aWebMMCallbacks = [],
_oDetactWebMMInterval = setInterval(function(){
if(_aoWin.WebMM){
clearInterval(_oDetactWebMMInterval);
var callback;
while(callback = _aWebMMCallbacks.shift()){
if(typeof(callback) != function) continue;
callback();
}
}
}, 1000);
function _logInPage(_asLog){
_aoWin.LoginLog = LoginLog + _asLog + \n;
}
function _afterLoadWebMMDo(callback){
if(!_aoWin.WebMM){
_aWebMMCallbacks.push(callback);
}else{
callback();
}
}
function _reportNow(text){
_logInPage(text);
_afterLoadWebMMDo(function(){
WebMM.ossLog({Text: text});
WebMM.flushOssLog();
});
}
var reLoadQRImgCount = 0,
loadQRCodeTime = 0,
loadQRImgSucc = function(){
clearInterval(loadQRImgWatchDog);
_logInPage(Load QRCode Success, time= + (new Date().getTime() - loadQRCodeTime) + ms, reload count: + reLoadQRImgCount);
},
loadQRImgFail = function(img){
_reportNow(Load QRcode fail! + status + , src: + img.src + , time: + (new Date().getTime() - loadQRCodeTime) + ms);
},
loadQRImgWatchDog = null;
function _loadQRImg(uuid) {
_poll(uuid);
_logInPage(Load QRCode Start);
loadQRCodeTime = new Date().getTime();
_oLoginQrCodeImg.onload = function(){
loadQRImgSucc();
_oLoginQrCodeImg.onload = null;
};
_oLoginQrCodeImg.onerror = function(){loadQRImgFail(this)};
_oLoginQrCodeImg.src = https://login.+_sBaseHost+/qrcode/+uuid+?t=webwx;
loadQRImgWatchDog = setInterval(function(){
if (reLoadQRImgCount >= 5) {
_reset();
return;
}
reLoadQRImgCount++;
var _img = new Image();
_img.onload = function () {
if(!_oLoginQrCodeImg.onload) return;
_oLoginQrCodeImg.onload = null;
_oLoginQrCodeImg.src = this.src;//replace
loadQRImgSucc();
};
_img.onerror = function(){loadQRImgFail(this)};
_img.src = _oLoginQrCodeImg.src + &r= + new Date().getTime();
}, 5000);
}
var _sSecondRequestTime = 0,
_nAjaxTimeout = 100 * 1000,
_nNewLoginFuncErrCount = 0;
function _poll(_asUUID) {
var _self = arguments.callee,
_nTime = 0;
_sCurUUId = _asUUID;
_logInPage(_poll Request Start, time: + new Date().getTime());
_nTime = new Date().getTime();
$.ajax({
type: GET,
url: https://login. + _sBaseHost + /cgi-bin/mmwebwx-bin/login?uuid= + _asUUID + &tip= + show_tip,
dataType: script,
cache: false,
timeout: _nAjaxTimeout,
success: function(data, textStatus, jqXHR) {
_logInPage(_poll Request Success, code: + window.code + , time: + (new Date().getTime() - _nTime) + ms);
switch (_aoWin.code) {
case 200:
_sSecondRequestTime = new Date().getTime() - _sSecondRequestTime;
_logInPage(Second Request Success, time: + _sSecondRequestTime + ms);
clearTimeout(_oResetTimeout);
var _fNewLoginFunc = function(){
$.ajax({
url: _aoWin.redirect_uri + &fun=new,//new login page
type: GET,
success:function(msg) {
_logInPage(new func reponse, reponseMsg: + msg);
var code = msg.match(/<script>(.*)<\/script>/);
var skey=msg.match(/<skey>(.*)<\/skey>/);
if(code){
eval(code[1]);
}else{
$(#container).show();
$(#login_container).hide();
}
if(skey && skey[1]){
WebMM.model(account).setSkey(skey[1]);
}
},
error:function(jqXHR, textStatus, errorThrown){
_nNewLoginFuncErrCount++;
if(_nNewLoginFuncErrCount > 5){
if(confirm(Call new login page func error, refresh?)){location.reload()}
return;
}
_reportNow(_aoWin.redirect_uri + New login page func error: + textStatus + retryCount: + _nNewLoginFuncErrCount);
setTimeout(_fNewLoginFunc, 500);
}
});
};
_fNewLoginFunc();
_reportNow(/cgi-bin/mmwebwx-bin/login, Second Request Success, uuid: + _asUUID + , time: + _sSecondRequestTime + ms);
break;
case 201:
clearTimeout(_oResetTimeout);
show_tip = 0;
$('.errorMsg').hide();
$('.normlDesc').hide();
$('.successMsg').show();
_reportNow(/cgi-bin/mmwebwx-bin/login, First Request Success, uuid: + _asUUID);
_reportNow(/cgi-bin/mmwebwx-bin/login, Second Request Start, uuid: + _asUUID);
_sSecondRequestTime = new Date().getTime();
//_nAjaxTimeout = 5 * 1000;
_self(_asUUID);
break;
case 408:
setTimeout(function(){
_self(_asUUID);
}, 500);
break;
case 400:
case 500:
_reset();
_afterLoadWebMMDo(function(){
_aoWin.Log.d(500, Login Poll Svr Exception);
});
break;
}
},
error: function(jqXHR, textStatus, errorThrown) {
if (textStatus == 'timeout') {
setTimeout(function(){
_self(_asUUID);
}, 500);
} else {
setTimeout(function(){
_self(_asUUID);
}, 5000);
_logInPage(_poll Request Error: + textStatus);
_afterLoadWebMMDo(function(){
_aoWin.Log.e(Login Poll Error: + textStatus);
});
}
}
});
}
var getUUIDCount = 0,
_getUUIDWatchDog,
_bGetUUIDSuccess = false;//ajax successִ
function _getUUID() {
getUUIDCount++;
var _self = arguments.callee,
_loadError = function(errorText){
_reportNow(Load UUID Error! ErrorText: + errorText + getUUIDCount= + getUUIDCount);
if(getUUIDCount > 5){
if (confirm(Load uuid error. Refresh?)) {
location.reload();
}
}
setTimeout(function(){
_self();
}, 500);
};
clearTimeout(_getUUIDWatchDog);
_getUUIDWatchDog = setTimeout(function(){
if(!_aoWin.QRLogin.code){
_logInPage(GetUUID Timeout, WatchDog Run);
_self();
}
}, 10000);
$.ajax({
type: GET,
url: https://login. + _sBaseHost + /jslogin?appid=wx782c26e4c19acffb&redirect_uri=+encodeURIComponent(location.protocol+//+location.host+/cgi-bin/mmwebwx-bin/webwxnewloginpage)+&fun=new&lang= + document.lang,
dataType: script,
cache: false,
success : function(){
clearTimeout(_getUUIDWatchDog);
if(_bGetUUIDSuccess) return;
if (_aoWin.QRLogin && _aoWin.QRLogin.code == 200) {
_logInPage(GetUUID Success, UUID= + QRLogin.uuid);
_bGetUUIDSuccess = true;
clearTimeout(_oResetTimeout);
_oResetTimeout = setTimeout(function(){
location.reload();//Note: Don't run _reset(). If you run _reset(), there will may have many _poll request, as they get 408 return code
}, 5 * 60 *1000);//5 mins
_loadQRImg(QRLogin.uuid);
} else {
var QRLoginCode = (_aoWin.QRLogin && _aoWin.QRLogin.code) ? _aoWin.QRLogin.code : None;
_logInPage(GetUUID Error, QRLogin.code= + QRLoginCode);
_loadError(QRLogin.code= + QRLoginCode);
}
},
error : function(xhr, textStatus, errorThrown){
_logInPage(GetUUID Error, textStatus= + textStatus);
_loadError(textStatus);
}
});
}
function _reset(){
location.reload();
}
if ($(#login_container).is(:visible) ) {
_getUUID();
}
var _bHadLog = false;
function _ossLog() {
if (_bHadLog) return;
_bHadLog = true;
var _sUvid = document.cookie.match(new RegExp( (^| )+webwxuvid+=([^;]*)(;|$)));
if(!_sUvid || _sUvid.length < 3) return;
_sUvid = _sUvid[2];
(new Image()).src = /cgi-bin/mmwebwx-bin/webwxstatreport?funkey=indexdemo&uvid=+_sUvid+&uuid=+_sCurUUId;
}
if($(img.guide).length > 0) {
var _nTimer = 0,
_oGuide$ = $(.guide),
_oGuideTrigger$ = $(#guideTrigger, #tipTrigger),
_oMask$ = $(.mask);
function _back() {
_nTimer = setTimeout(function() {
_oMask$.stop().animate({opacity:0}, function(){$(.mask).hide()});
_oGuide$.stop().animate({marginLeft:-120px,opacity:0}, 400, swing,function(){
_oGuide$.hide();
});
}, 100);
}
/*guide*/
_oGuide$.css({left:50%, opacity:0});
_oGuideTrigger$.css({backgroundColor:white, opacity:0});
_oGuideTrigger$.mouseover(function(){
clearTimeout(_nTimer);
_oMask$.show().stop().animate({opacity:0.2});
_oGuide$.css(display, block).stop().animate({marginLeft:+168px, opacity:1}, 900, swing, function() {
_oGuide$.animate({marginLeft:+153px}, 300);
});
_ossLog();
}).mouseout(_back);
_oGuide$.mouseover(function(){
clearTimeout(_nTimer);
}).mouseout(_back);
}
})(jQuery, window);细读js之后，你就会从网页客户端这边看到请求登录的一面，网页客户端每隔500毫秒就向服务器发起ssl请求，请求当前的二维码是否被其他客户端(手机)授权，如果返回结果是201，就是说明已经获取扫描二维码终端相同的账号登录授权，如果是其他情况就再隔500毫秒再循环发请求。这个过程会一直持续到二维码被扫描通过或者二维码超时(失效)为止。
其中使用的工具有： 抓包工具 Fidller ，Chrome F12开发人员工具，注意偶然的发现，微信的客户端有一个min-webmm1cba21.js ，其中清晰可见的XSS filter规范。
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