简书游戏广告分析

2023-04-21 01:01:39 28 7253 6

[TCV: 中]

问题引出

今天上网时无意间打开简书,发现简书中直接插入了游戏广告:

好奇心驱使下,分析了一下广告是怎么插进去的,并把过程分享一下(url中的.均用_代替)

目录

  • 抓包

  • 分析js依赖关系

  • 分析代码

  • 自动关闭广告

一、抓包

清除Cookie,清除缓存,抓包

找广告比较好找,可以从这些图片入手

很快就找到了图片链接,查看调用栈,发现了两个可疑文件

https://4698_chushoushijian_cn/alikes_php?id=8273

https://4698_chushoushijian_cn/musics_php?id=8275

访问了一下 https://4698_chushoushijian_cn,是动力广告,专门投放游戏广告的

右键选择按domain排序,可以发现更多的可疑链接

二、js依赖关系

分析一下加载流程

整个加载过程非常复杂

总的来看罪魁祸首是[slug].js,而[slug].js由简书直接加载的

要么是广告商给钱,要么是cdn被投毒了

三、分析代码

[slug].js

分析一下[slug].js,19858行代码

代码中也有大量的业务逻辑,直接搜索一下关键字"chushoushijian"

这里创建了script标签,将两个脚本引入了

下个断点看看,这个函数是怎么被调用的

没有详细去分析,大概看了看,这个函数被加入了一个链表,最终被调用

alikes.php

接下来分析musics.php和alikes.php

先看alikes.php

1. 创建了好几个大对象

os = {
    "name": "win10",
    "is_mobile": "n"
}
ads = [{
    "headline": "",
    "description": "",
    "dispurl": "",
    "imageurl": null,
    "alt": "",
    "url": "https://pp.chuzushijian.cn/c.php?s=JnpvbmVpZD04MjczJnNpdGVpZD03MjQwJnVpZD00Njk4JmFkc2lkPTYmcGxhbmlkPTMwJnBsYW50eXBlPWNwdiZ1cmw9aHR0cHMlM0ElMkYlMkZ5eHRnLnRhb2ppa2UuY29tLmNuJTJGdGclMkZ0dGZjLmh0bWwlM0ZzYyUzRG1NMmlvWmx2d1omdnRpbWU9MjAyMy0wNC0xMSAxOTo0MjowMCZpcD0xMTUuMTcxLjIwLjE0Nw==;5b1dae569c2f22ddf1c291302ae7a738;",
    "adsid": "6",
    "planid": "30",
    "htmlcode": "https://cdn-file-ssl-wan.ludashi.com/wan/newswf/dlgglm/10.gif",
    "htmlcontrol": "",
    "c2_url": "https://pp.chuzushijian.cn/effect.php?type=ecv&planid=30&adsid=6&zoneid=8273&uid=4698&adtplid=1000&plantype=cpv"
}]
z = {
    "zoneid": "8273",
    "uid": "4698",
    "plantype": "cpv",
    "sitetype": null,
    "site": {
        "www.jianshu.com": {
            "siteurl": "www.jianshu.com,*.jianshu.com",
            "sitetype": "177",
            "siteid": "7240"
        }
    },
    "adtplid": "1000",
    "width": "320",
    "height": "270",
    "adstyleid": "1000",
    "viewtype": "1",
    "viewadsid": "",
    "codestyle": '{"border":"FFFFFF","headline":"0000FF","background":"FFFFFF","description":"444444","dispurl":"008000","width":"320","height":"270","zoneid":"8273","plantype":"cpv","htmlcontrol":""}',
    "applyplanid": null,
    "userstatus": "2",
    "adstyle": null,
    "insite": "2",
    "pvstep": "0",
    "ckh": "24",
    "ckht": "1",
    "ckm": "1",
    "ckmt": "1",
    "wapckh": "24",
    "wapckht": "1",
    "wapckm": "1",
    "wapckmt": "1",
    "refs": "www.baidu.com,www.sogou.com,www.so.com,www.so.com,cn.bing.com",
    "waprefs": "so.m.sm.cn,m.baidu.com,m.sogou.com,wap.sogou.com,m.so.com",
    "refallowed": "1",
    "waprefallowed": "0",
    "checkuser": "a:2:{s:4:"week";a:1:{s:5:"isacl";s:3:"all";}s:4:"city";a:2:{s:5:"isacl";s:4:"acls";s:10:"comparison";s:2:"==";}}",
    "baiducheckuser": "a:2:{s:4:"week";a:1:{s:5:"isacl";s:3:"all";}s:4:"city";a:2:{s:5:"isacl";s:3:"all";s:10:"comparison";s:2:"==";}}",
    "jdcheckuser": "a:1:{s:4:"city";a:2:{s:5:"isacl";s:3:"all";s:10:"comparison";s:2:"==";}}",
    "webtitle": "请输入网站标题内容……,",
    "countdown": "15",
    "browser": "0",
    "browser_types": "s:0:"";",
    "uset": "0",
    "wapset": "0",
    "dlset": "1",
    "dl_width": "1200",
    "wapdl_width": "0",
    "wap_webtitle": "背投无效,请输入网站标题,"
}
v = {
    "tpl": {
        "tplid": "1000",
        "adtypeid": "1000",
        "tplname": "PC端",
        "tpltype": "script",
        "viewjs": "",
        "iframejs": "",
        "customspecs": "1",
        "customcolor": "1",
        "description": "",
        "sort": "1",
        "status": "y",
        "addtime": "2015-05-25 17:21:43",
        "adnum": "1"
    },
    "style": {
        "styleid": "1000",
        "tplid": "1000",
        "stylename": "\u53f3\u4e0b\u89d2",
        "htmlcontrol": "",
        "specs": "320x270",
        "viewjs": "pvid.aid.push(ads[0].adsid); \r\npvid.pid.push(ads[0].planid);\r\npvstas(pvid);",
        "iframejs": "var ext= ads[0].htmlcode.substr(ads[0].htmlcode.lastIndexOf(\".\")).toLowerCase();\r\nif (ext=='.html'){\r\n\tvar str = '<div style=\"position:absolute;z-index:10000;background-color:#fff;opacity:0.01;filter:alpha(opacity:1);\"><a href=\"'+ads[0].url+'\" target=\"_blank\" style=\"display:block;width:'+config.width+'px;height:'+ config.height+'px;\"><\/a><\/div><iframe src=\"' + ads[0].htmlcode + '\" width=\"' + config.width + '\" height=\"' + config.height + '\"  marginheight=\"0\" scrolling=\"no\" frameborder=\"0\" allowtransparency=\"true\"><\/iframe>';\r\n} else if(ext=='.gif'){\r\n \tvar str = '<a target=\"_blank\" href=\"'+ads[0].url+'\" style=\"display: block;\"><img src=\"' + ads[0].htmlcode + '\" width=\"320\" ><\/a>';\r\n}  else if(ext=='.png'){\r\n \tvar str = '<a target=\"_blank\" href=\"'+ads[0].url+'\" style=\"display: block;\"><img src=\"' + ads[0].htmlcode + '\" width=\"' + config.width + '\" height=\"' + config.height + '\"><\/a>';\r\n}\r\n else if(ext=='!'){\r\n \tvar str = '<img style=\"display:block;position:absolute;left:5px;width:auto;border:none;\" src=\"\/\/img.dlads.cn\/images\/laba.gif\"><a target=\"_blank\" href=\"'+ads[0].url+'\" style=\"display:block;text-align:center;line-height:25px;color:#fff;font-size:15px;text-decoration:none;\">' + ads[0].htmlcode + '<\/a>';\r\n} else if(ext=='.jpg'){\r\n\tvar str = '<a target=\"_blank\" href=\"'+ads[0].url+'\" style=\"display: block;\"><img src=\"' + ads[0].htmlcode + '\" width=\"320\" height=\"270\"><\/a>';\r\n}else{\r\n\t var str = \"\"+ads[0].htmlcode+\" \";\r\n}\r\ndocument.writeln(str);\r\nvar C_pv=new Image();\r\nvar m;\r\nvar o=0;\r\nvar iframes=document.getElementsByTagName(\"iframe\"); \r\nfunction a(){\r\nfor(var i=0;i<iframes.length;i++){\r\n   var str = iframes<i>.id;\r\n   var o = iframes<i>;\r\n   if(1){\r\n   m= setInterval(function() { \r\n        a = document.activeElement; \r\n        if(a === o){   v(); }}, \r\n      1);}}\r\n}\r\nfunction v(){\r\n  if(o){ return; }\r\n   setTimeout(function(){\r\n     C_pv.src=ads[0].url+\"&a=\"+Math.random();\r\n   },1000);\r\n   o=1;\r\n   setTimeout(function()  {  o=0; }, 1000*360);\r\n   clearInterval(m);\r\n __cb(ads[0]);\r\n}\r\nif(\"ActiveXObject\" in window){ \r\n\t\/\/str.indexOf(\"proIframe\") > 0\r\n\tsetTimeout(function(){for(var i=0;i<iframes.length;i++){var str = iframes<i>.id;if(1)  {  __A(iframes<i>,\"focus\",v); }  }}, 1000);  \t\r\n}else{setTimeout(a, 500);}\r\n\r\npvid.aid.push(ads[0].adsid); \r\npvid.pid.push(ads[0].planid);\r\npvstas(pvid);",
        "adnum": "1",
        "description": "",
        "status": "y",
        "addtime": "2015-05-25 17:22:19"
    }
}
zone = {
    "border": "FFFFFF",
    "headline": "0000FF",
    "background": "FFFFFF",
    "description": "444444",
    "dispurl": "008000",
    "width": "320",
    "height": "270",
    "zoneid": "8273",
    "plantype": "cpv",
    "htmlcontrol": ""
}

2. 判断是否为手机

查找是否有name为viewport的meta标签

如果不存在,就新建一个meta标签,如下:

<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0,user-scalable=no">
width=device-width 表示将视口的宽度设置为设备的宽度,即以设备宽度作为视口宽度,以便更好地适配不同分辨率和屏幕尺寸的设备。
initial-scale=1.0 表示页面初始缩放比例为 1,即不进行缩放,这个值可以根据需要进行修改。
maximum-scale=1.0 表示用户最大缩放比例为 1,即不允许用户对页面进行缩放。
minimum-scale=1.0 表示用户最小缩放比例为 1,即不允许用户对页面进行缩放。
user-scalable=no 表示不允许用户对页面进行缩放。

viewportmeta 标签用于设置网页在移动设备中的显示效果,可以通过 widthheightinitial-scalemaximum-scaleminimum-scaleuser-scalable 等属性进行控制。在移动端浏览器中,由于屏幕尺寸、分辨率和像素密度等因素的不同,网页显示效果可能会出现问题,例如字体太小、排版混乱等。为了解决这个问题,开发者可以通过设置 viewportmeta 标签来调整网页在移动设备上的显示效果,从而更好地适配不同的手机屏幕。

具体来说, viewportmeta 标签通过设置 content 属性来指定一些参数,例如 width 表示视口宽度, initial-scale 表示初始缩放比例,user-scalable 表示是否允许用户缩放页面等等。通过调整这些参数,可以使网页在不同的设备上呈现出更为统一和美观的视觉效果。

3. 接着定义了一个domain,存放了两个地址

domain = {
    jsurl: 'https://pp.chuzushijian.cn/',
    imgurl: 'https://pp.chuzushijian.cn/',
}

4. 获取浏览器UA,并从中正则提取出一些有用信息存入__B中

包括当前浏览器的版本,种类

5. 构造两个链接

var ifsrc_cpc = 'https://pp.chuzushijian.cn/v2.php?id=' + (zone.zoneid - 1) + '&p=' + __P() + '&l=' + __LC() + '&t=' + 1681214767
var ifsrc_adx = 'https://pp.chuzushijian.cn/news/33.html?id=' + (zone.zoneid - 1) + '&p=' + __P() + '&l=' + __LC() + '&t=' + 1681214767

先看__P方法,是一个大类,经过测试,每次运行的结果都一样,下面仔细分析一下

function __P() {
    var win = window
      , doc = document
      , p = [];
    function r() {
        var c;
        try {
            c = win.opener ? win.opener.document.location.href : doc.referrer
        } catch (e) {
            c = doc.referrer
        }
        function K(r) {
            var s = ['wd', 'p', 'q', 'keyword', 'kw', 'w', 'key', 'word', 'query', 'q1', 'name'];
            if (r != '' && r != null) {
                for (var i = 0; i < s.length; i++) {
                    var re = new RegExp('[^1-9a-zA-Z]' + s<i> + '=\([^&]*\)');
                    var kk = r.match(re);
                    if (kk != null) {
                        return kk[1]
                    }
                }
            }
            return ''
        }
        c = c ? {
            r: encodeURIComponent(c),
            k: encodeURIComponent(K(c))
        } : {
            r: encodeURIComponent(c)
        };
        return c;
    }

    function u() {
        var c;
        try {
            c = win.top.document.location.href;
        } catch (e) {
            c = doc.location.href;
        }
        return {
            u: encodeURIComponent(c)
        };
    }
    function sE() {
        var e = 0, m = navigator.mimeTypes, i;
        if (navigator.mimeTypes != null && navigator.mimeTypes.length > 0) {
            for (i in m) {
                if (m<i>['type'] == 'application/vnd.chromium.remoting-viewer') {
                    e = '1';
                }
            }
        }
        if (e != '1') {
            var _tk = 'track'in document.createElement('track')
              , _se = 'scoped'in document.createElement('style')
              , _vl = 'v8Locale'in window;
            if (_tk && !_se && !_vl) {
                e = '2';
            }
            if (_tk && _se && _vl) {
                e = '3';
            }
        }
        return {
            se: e
        };
    }
    function j() {
        return {
            j: navigator.javaEnabled() ? 1 : 0
        };
    }

    function pl() {
        return {
            pl: navigator.plugins.length
        };
    }

    function m() {
        return {
            m: navigator.mimeTypes.length
        };
    }

    function f() {
        var v = 0;
        if (navigator.plugins && navigator.mimeTypes.length) {
            var b = navigator.plugins['Shockwave Flash'];
            if (b && b.description)
                v = b.description.replace(/([a-zA-Z]|\s)+/, '').replace(/(\s)+r/, '.')
        } else if (__B.ie && !window.opera) {
            var c = null;
            try {
                c = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.7')
            } catch (e) {
                var a = 0;
                try {
                    c = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.6');
                    a = 6;
                    c.AllowScriptAccess = 'always'
                } catch (e) {
                    if (a == 6)
                        return a.toString()
                }
                try {
                    c = new ActiveXObject('ShockwaveFlash.ShockwaveFlash')
                } catch (e) {
                }
            }
            if (c != null) {
                var a = c.GetVariable('$version').split(' ')[1];
                v = a.replace(/,/g, '.')
            }
        }
        return {
            f: v
        }
    }

    function res() {
        var D = screen
          , v = D.width + 'x' + D.height;
        return {
            res: v
        }
    }

    function t() {
        var v = document.title;
        return {
            t: encodeURIComponent(v)
        }
    }

    function l() {
        var v = navigator.browserLanguage || navigator.language;
        return {
            l: v
        }
    }

    function c() {
        var v = navigator.cookieEnabled;
        v = v ? 1 : 0;
        return {
            c: v
        }
    }

    function H() {
        return document.body && {
            h: document.body.clientHeight
        };
    }

    var b = {};
    __E([j, pl, m, f, r, u, res, t, l, c, H, sE], function(a) {
        __M(b, a)
    });
    for (var e in b) {
        p.push(e + '=' + b[e]);
    }
    return Base64.encode(p.join('&'));
}

很容易分析出来,依次调用j, pl, m, f, r, u, res, t, l, c, H, sE函数,将其执行结果(均为字典)的键值全部存入b字典中

下面依次分析这些函数

j函数:返回是否启用了java

function j() {
    return {
        j: navigator.javaEnabled() ? 1 : 0
    };
}

pl函数:返回浏览器安装的插件数量

function pl() {
    return {
        pl: navigator.plugins.length
    };
}

m函数:返回浏览器支持的mime类型

function m() {
    return {
        m: navigator.mimeTypes.length
    };
}

f函数:检测当前浏览器是否支持 Adobe Flash 插件,并返回其版本号

function f() {
    var v = 0;
    if (navigator.plugins && navigator.mimeTypes.length) {
        var b = navigator.plugins['Shockwave Flash'];
        if (b && b.description)
            v = b.description.replace(/([a-zA-Z]|\s)+/, '').replace(/(\s)+r/, '.')
    } else if (__B.ie && !window.opera) {
        var c = null;
        try {
            c = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.7')
        } catch (e) {
            var a = 0;
            try {
                c = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.6');
                a = 6;
                c.AllowScriptAccess = 'always'
            } catch (e) {
                if (a == 6)
                    return a.toString()
            }
            try {
                c = new ActiveXObject('ShockwaveFlash.ShockwaveFlash')
            } catch (e) {
            }
        }
        if (c != null) {
            var a = c.GetVariable('$version').split(' ')[1];
            v = a.replace(/,/g, '.')
        }
    }
    return {
        f: v
    }
}

r函数:获取当前页面的来源信息和可能包含在来源信息中的关键词

function r() {
    var c;
    try {
        c = win.opener ? win.opener.document.location.href : doc.referrer
    } catch (e) {
        c = doc.referrer
    }
    function K(r) {
        var s = ['wd', 'p', 'q', 'keyword', 'kw', 'w', 'key', 'word', 'query', 'q1', 'name'];
        if (r != '' && r != null) {
            for (var i = 0; i < s.length; i++) {
                var re = new RegExp('[^1-9a-zA-Z]' + s<i> + '=\([^&]*\)');
                var kk = r.match(re);
                if (kk != null) {
                    return kk[1]
                }
            }
        }
        return ''
    }
    c = c ? {
        r: encodeURIComponent(c),
        k: encodeURIComponent(K(c))
    } : {
        r: encodeURIComponent(c)
    };
    return c;
}

u函数:获取当前页面的顶层窗口的 URL 地址

function u() {
    var c;
    try {
        c = win.top.document.location.href;
    } catch (e) {
        c = doc.location.href;
    }
    return {
        u: encodeURIComponent(c)
    };
}

res函数:获取当前屏幕的分辨率(例如:1494x934)

function res() {
    var D = screen
      , v = D.width + 'x' + D.height;
    return {
        res: v
    }
}

t函数:获取当前页面的标题

function t() {
    var v = document.title;
    return {
        t: encodeURIComponent(v)
    }
}

l函数:获取浏览器的语言设置

function l() {
    var v = navigator.browserLanguage || navigator.language;
    return {
        l: v
    }
}

c函数:检测浏览器是否支持 Cookie

function c() {
    var v = navigator.cookieEnabled;
    v = v ? 1 : 0;
    return {
        c: v
    }
}

H函数:获取当前页面的文档高度

function H() {
    return document.body && {
        h: document.body.clientHeight
    };
}

sE函数:检测当前浏览器是否支持某些特定的技术(如 WebRTC 和 CSS Scoped Styles)

function sE() {
    var e = 0, m = navigator.mimeTypes, i;
    if (navigator.mimeTypes != null && navigator.mimeTypes.length > 0) {
        for (i in m) {
            if (m<i>['type'] == 'application/vnd.chromium.remoting-viewer') {
                e = '1';
            }
        }
    }
    if (e != '1') {
        var _tk = 'track'in document.createElement('track')
          , _se = 'scoped'in document.createElement('style')
          , _vl = 'v8Locale'in window;
        if (_tk && !_se && !_vl) {
            e = '2';
        }
        if (_tk && _se && _vl) {
            e = '3';
        }
    }
    return {
        se: e
    };
}

最终生成了b,b包含了浏览器的一些特征,我的浏览器当前状态下的b如下:

b = {
    j =  0,
    pl =  5,
    m =  2,
    f =  0,
    r =  "https%3A%2F%2Fwww.baidu.com%2Flink%3Furl%3DxgtwhmaJd433Do_UUtcdd7fq1K02GypeMRyLUlIu0vD0CAkiZ9jtqa1kBQZsSvvq%26wd%3D%26eqid%3De2cfa4250000035600000003643510ba",
    k =  "",
    u =  "https%3A%2F%2Fwww.jianshu.com%2Fp%2Fad9d30ee0d1d",
    res =  "1494x934",
    t =  "%5BEIS%202019%5DEzPOP%20-%20%E7%AE%80%E4%B9%A6",
    l =  "zh-CN",
    c =  1,
    h =  815,
    se =  "2"
}

接着将b变成键=值并用&连接起来,base64一下

接下来看__LC函数,获取当前页面所在的顶层文档(或者当前文档)的主机地址,并进行 Base64 编码处理

function __LC() {
    var c;
    try {
        c = window.top.document.location.host;
    } catch (e) {
        c = document.location.host;
    }
    return Base64.encode(c);
}

6. 接下来调用__S函数,分析其流程

(1) 看I和J函数

新建了两个标签

<div style="display: block; padding: 0px; margin: 0px; z-index:2147483648; position: fixed; right: 0px; bottom: auto; left: auto; bottom: 0px; width: 320px; height: 270px;">
    <img class="btnclose" src="https://pp.chuzushijian.cn/images/close01.png" style="display:block;position:absolute;top:1px;right:2px;cursor:pointer;width:27px;height:18px;z-index:2147483648;padding:0 0 0 0;" id="close1">
    <img class="btnclose" src="https://pp.chuzushijian.cn/images/close02.png" style="display:none;position:absolute;top:1px;right:29px;cursor:pointer;width:15px;height:18px;z-index:2147483648;padding:0 0 0 0;" id="close">
    <a href="#" target="_blank" title="动力广告"><img src="https://pp.chuzushijian.cn/images/bj1.png" style="position:absolute;bottom:0px;left:0px;width:25px;z-index:2147483648;padding:0 0 0 0;"></a>
    <a href="https://pp.chuzushijian.cn/c.php?s=JnpvbmVpZD04MjczJnNpdGVpZD03MjQwJnVpZD00Njk4JmFkc2lkPTgmcGxhbmlkPTMwJnBsYW50eXBlPWNwdiZ1cmw9aHR0cHMlM0ElMkYlMkZ5eHRnLnRhb2ppa2UuY29tLmNuJTJGdGclMkZ0dGZjLmh0bWwlM0ZzYyUzRFJVWDQ1T2V0R3ImdnRpbWU9MjAyMy0wNC0xMSAyMDozODo0MSZpcD0xMTUuMTcxLjIwLjE0Nw==;03c8963a79ad640355e73402a148db11; +&do2click=true" target="_blank" style="display:block;width:100%;height:100%;">
    <img src="https://cdn-file-ssl-wan.ludashi.com/wan/newswf/dlgglm/18dl.gif " style="display:block;width:100%;height:100%;max-height: none;"></a>
</div>
<div id="note" style="display: block; padding: 0px; margin: 0px; position: fixed; width:320px; height: 25px; overflow: hidden; z-index:2147483648;opacity:1;background:#4F4F4F;bottom:270px; left: auto; right:0px;">
    <img class="btnclose" src="https://pp.chuzushijian.cn/images/closetb.png" style="display:block;padding:0px;position:absolute;right:5px;top:7px;width:11px;height:11px;cursor:pointer;z-index:2147483648" id="closetb">
    <iframe src="https://pp.chuzushijian.cn/v2.php?id=8272&p=aj0wJnBsPTUmbT0yJmY9MCZyPWh0dHBzJTNBJTJGJTJGd3d3LmJhaWR1LmNvbSUyRmxpbmslM0Z1cmwlM0R4Z3R3aG1hSmQ0MzNEb19VVXRjZGQ3ZnExSzAyR3lwZU1SeUxVbEl1MHZEMENBa2laOWp0cWExa0JRWnNTdnZxJTI2d2QlM0QlMjZlcWlkJTNEZTJjZmE0MjUwMDAwMDM1NjAwMDAwMDAzNjQzNTEwYmEmaz0mdT1odHRwcyUzQSUyRiUyRnd3dy5qaWFuc2h1LmNvbSUyRnAlMkZhZDlkMzBlZTBkMWQmcmVzPTE0OTR4OTM0JnQ9JTVCRUlTJTIwMjAxOSU1REV6UE9QJTIwLSUyMCVFNyVBRSU4MCVFNCVCOSVBNiZsPXpoLUNOJmM9MSZoPTgxNSZzZT0y&l=d3d3LmppYW5zaHUuY29t&t=1681216721" width="320" height="25" marginheight="0" scrolling="no" frameborder="0" id="iFrameshow" allowtransparency="true"></iframe>
    <input type="text" id="btnshow" style="width: 0; height: 0; position: relative; right: -100000px; text-indent: -9999">
</div>

分为两部分,看一下iframe这个请求

https://pp_chuzushijian_cn/v2_php

判断当前广告的htmlcode后缀名(在html中的显示类型),这里是gif

于是创建一个a标签

<a target="_blank"  style="display: block;">
    <img src="https://cdn-file-ssl-wan.ludashi.com/wan/newswf/dlgglm/14dl.gif" width="320" >
</a>

展示效果如下图所示:

接着给图片添加click和mousemove事件

(2) 给ads(advertisement:广告)的url加上p参数

接着调用pvstas函数

function pvstas(pvid) {
    var aid, pid;
    if (pvid.aid.length > 1) {
        aid = pvid.aid.join(',').match(/([^,]+)(?!.*\1)/ig);
        pid = pvid.pid.join(',').match(/([^,]+)(?!.*\1)/ig);
    } else {
        aid = pvid.aid;
        pid = pvid.pid;
    }

    var pv_step = '10'
    var runm = z['pv_step'] || pv_step
    var rand = parseInt(Math.random() * runm + 1)
    if (rand === 1 && pv_step) {
        var url = domain.jsurl + 'stats.php?adsid=' + aid + '&planid=' + pid + '&uid=' + z['uid'] + '&siteid=&plantype=' + z['plantype'] + '&zoneid=' + z['zoneid'] + '&adtplid=' + z['adtplid'] + '&sep=' + runm
        __L(url)
    }
}

pvstas随机执行L函数,L函数里面创建了一个script标签,其src就是这个url,向服务器发送数据

创建一个script标签,其src为百度的一个链接

判断来源是不是以下几个

www_baidu_com,www_sogou_com,www_so_com,www_so_com,cn_bing_com

(3) 为关闭按钮绑定click事件,只要一点击,立马先跳转到广告页面

alikes.php主要负责右下角的广告,musics_php负责两边的广告

7. 广告是如何跳转的

这是广告的链接,很明显是这个投放公司的域名

https://pp_chuzushijian_cn/c_php?s=JnpvbmVpZD04Mjc1JnNpdGVpZD03MjQwJnVpZD00Njk4JmFkc2lkPTIwNSZwbGFuaWQ9MzUmcGxhbnR5cGU9Y3B2JnVybD1odHRwcyUzQSUyRiUyRnl4dGcudGFvamlrZS5jb20uY24lMkZ0ZyUyRnR0ZmMuaHRtbCUzRnNjJTNEcmtnN0pFWUJadSZ2dGltZT0yMDIzLTA0LTEyIDA5OjE4OjI1JmlwPTExNS4xNzEuMjAuMTQ3;b999ce64be4fd695e65ea594a8e904e8;&p=aj0wJm09MiZmPTAmcj0mdT1odHRwcyUzQSUyRiUyRnd3dy5qaWFuc2h1LmNvbSUyRnAlMkYzZDA2OTQxZjM5MzYmcmVzPTE0OTR4OTM0JnQ9JUUzJTgwJThBJUU1JThDJTg1JUU2JUIzJTk1JUU1JTg4JUE5JUU1JUE0JUFCJUU0JUJBJUJBJUUzJTgwJThCJUVGJUJDJTlBJUU1JUE5JTlBJUU1JUE0JTk2JUU3JTlBJTg0JUU1JTg1JUIzJUU3JUIzJUJCJUVGJUJDJThDJUU3JTlEJUExJUU4JUJGJTg3JUU1JUIwJUIxJUU3JUJCJTkzJUU2JTlEJTlGJUU0JUJBJTg2JUVGJUJDJThDJUU1JThFJTlGJUU1JTlCJUEwJUU1JUJFJTg4JUU3JThFJUIwJUU1JUFFJTlFJTIwLSUyMCVFNyVBRSU4MCVFNCVCOSVBNiZsPXpoLUNOJmM9MSZoPTgxNSZzZT0y&do2click=true

有几个参数:

他会重定向到游戏的真实网页

其中p参数为浏览器环境,之前分析了

这个s参数就是目标广告的信息,但是这是直接写死的,也无法分析具体是怎么加密的

四、自动关闭广告

大致分为以下几种方法

  • 拦截该广告公司的请求

  • 删除创建的广告标签

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