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Disabling the Scripting.FileSystemObject ComObject (When you get the 0x8002801c error)
#region Helper functions
function Set-Ownership {
[CmdletBinding(SupportsShouldProcess = $false)]
param(
[Parameter(Mandatory = $true)]
[ValidateNotNullOrEmpty()]
[string]$Path,
[Parameter(Mandatory = $true)]
[ValidateNotNullOrEmpty()] [ValidatePattern('(\w+)\\(\w+)')]
[string]$Identity,
[Parameter(Mandatory = $false)]
[switch]$AddFullControl,
[Parameter(Mandatory = $false)]
[switch]$Recurse
)
begin {
$tokenManipulate = @'
using System;
using System.Runtime.InteropServices;
public class TokenManipulate {
[DllImport("kernel32.dll", ExactSpelling = true)]
internal static extern IntPtr GetCurrentProcess();
[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
internal static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall, ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen);
[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
internal static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok);
[DllImport("advapi32.dll", SetLastError = true)]
internal static extern bool LookupPrivilegeValue(string host, string name, ref long pluid);
[StructLayout(LayoutKind.Sequential, Pack = 1)]
internal struct TokPriv1Luid {
public int Count;
public long Luid;
public int Attr;
}
internal const int SE_PRIVILEGE_DISABLED = 0x00000000;
internal const int SE_PRIVILEGE_ENABLED = 0x00000002;
internal const int TOKEN_QUERY = 0x00000008;
internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
public static bool AddPrivilege(string privilege) {
bool retVal;
TokPriv1Luid tp;
IntPtr hproc = GetCurrentProcess();
IntPtr htok = IntPtr.Zero;
retVal = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);
tp.Count = 1;
tp.Luid = 0;
tp.Attr = SE_PRIVILEGE_ENABLED;
retVal = LookupPrivilegeValue(null, privilege, ref tp.Luid);
retVal = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
return retVal;
}
public static bool RemovePrivilege(string privilege) {
bool retVal;
TokPriv1Luid tp;
IntPtr hproc = GetCurrentProcess();
IntPtr htok = IntPtr.Zero;
retVal = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);
tp.Count = 1;
tp.Luid = 0;
tp.Attr = SE_PRIVILEGE_DISABLED;
retVal = LookupPrivilegeValue(null, privilege, ref tp.Luid);
retVal = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
return retVal;
}
}
'@
}
Process {
Add-Type -TypeDefinition $TokenManipulate
[void][TokenManipulate]::AddPrivilege('SeTakeOwnershipPrivilege')
[void][TokenManipulate]::AddPrivilege('SeRestorePrivilege')
$item = Get-Item -Path $Path -ErrorAction SilentlyContinue
if(-not $item) {
Write-Warning ("'{0}' not found" -f $Path)
return
}
$owner = New-Object System.Security.Principal.NTAccount -ArgumentList ($Identity -split '\\')
if ($item.PSIsContainer) {
switch ($item.PSProvider.Name) {
'FileSystem' {
$acl = New-Object -TypeName System.Security.AccessControl.DirectorySecurity
}
'Registry' {
$acl = New-Object -TypeName System.Security.AccessControl.RegistrySecurity
switch (($item.Name -split '\\')[0]) {
'HKEY_CLASSES_ROOT' { $rootKey = [Microsoft.Win32.Registry]::ClassesRoot; break }
'HKEY_LOCAL_MACHINE' { $rootKey = [Microsoft.Win32.Registry]::LocalMachine; break }
'HKEY_CURRENT_USER' { $rootKey = [Microsoft.Win32.Registry]::CurrentUser; break }
'HKEY_USERS' { $rootKey = [Microsoft.Win32.Registry]::Users; break }
'HKEY_CURRENT_CONFIG' { $rootKey = [Microsoft.Win32.Registry]::CurrentConfig; break }
}
$key = $item.Name -replace "$rootKey\\"
$item = $rootKey.OpenSubKey($Key, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree,
[System.Security.AccessControl.RegistryRights]::TakeOwnership)
}
}
Write-Verbose "Setting ownership for $($owner.Value) on $Path"
$acl.SetOwner($owner)
$item.SetAccessControl($acl)
if($AddFullControl) {
$ace = New-Object -TypeName System.Security.AccessControl.RegistryAccessRule -ArgumentList @(
$owner, [System.Security.AccessControl.RegistryRights]::FullControl,
[System.Security.AccessControl.InheritanceFlags]::None,
[System.Security.AccessControl.PropagationFlags]::None,
[System.Security.AccessControl.AccessControlType]::Allow
)
Write-Verbose "Setting FullControl permissions for $($owner.Value) on $Path"
$acl.AddAccessRule($ace)
$item.SetAccessControl($acl)
}
if ($item.PSProvider.Name -eq 'Registry') { $item.Close() }
if ($Recurse.IsPresent) {
if ($item.PSProvider.Name -eq 'Registry') {
$items = @(Get-ChildItem -Path $Path -Recurse -Force | Where-Object { $_.PSIsContainer })
}
else {
$items = @(Get-ChildItem -Path $Path -Recurse -Force)
}
for ($i = 0; $i -lt $items.Count; $i++) {
switch ($item.PSProvider.Name) {
'FileSystem' {
$item = Get-Item $items[$i].FullName
if ($item.PSIsContainer) { $acl = New-Object -TypeName System.Security.AccessControl.DirectorySecurity }
else { $acl = New-Object -TypeName System.Security.AccessControl.FileSecurity }
}
'Registry' {
$item = Get-Item $items[$i].PSPath
$acl = New-Object -TypeName System.Security.AccessControl.RegistrySecurity
switch ($item.Name.Split('\')[0]) {
'HKEY_CLASSES_ROOT' { $rootKey = [Microsoft.Win32.Registry]::ClassesRoot; break }
'HKEY_LOCAL_MACHINE' { $rootKey = [Microsoft.Win32.Registry]::LocalMachine; break }
'HKEY_CURRENT_USER' { $rootKey = [Microsoft.Win32.Registry]::CurrentUser; break }
'HKEY_USERS' { $rootKey = [Microsoft.Win32.Registry]::Users; break }
'HKEY_CURRENT_CONFIG' { $rootKey = [Microsoft.Win32.Registry]::CurrentConfig; break }
}
$Key = $item.Name.Replace(($item.Name.Split('\')[0] + '\'), '')
$item = $rootKey.OpenSubKey($Key, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree,
[System.Security.AccessControl.RegistryRights]::TakeOwnership)
}
}
$acl.SetOwner($owner)
Write-Verbose "Setting ownership for $($owner.Value) on $($item.Name)"
$item.SetAccessControl($acl)
if ($item.PSProvider.Name -eq 'Registry') { $item.Close() }
}
}
}
else {
if ($Recurse.IsPresent) { Write-Warning 'Object specified is neither a folder nor a registry key. Recursion is not possible.' }
switch ($item.PSProvider.Name) {
'FileSystem' { $acl = New-Object -TypeName System.Security.AccessControl.FileSecurity }
'Registry' { Write-Error 'You cannot set ownership on a registry value' }
default { Write-Error "Unknown provider: $($item.PSProvider.Name)" }
}
$acl.SetOwner($owner)
Write-Verbose "Setting ownership for $($owner.Value) on $Path"
$item.SetAccessControl($acl)
}
}
}
#endregion
#region Test FileSystemObject ComObject (Should work)
(New-Object -ComObject Scripting.FileSystemObject).Drives
#endregion
#region Set ownership and add permissions to the relevant registry keys
$regPaths = @(
'Registry::HKEY_CLASSES_ROOT\TypeLib\{420B2830-E718-11CF-893D-00A0C9054228}\1.0\0\win32'
'Registry::HKEY_CLASSES_ROOT\TypeLib\{420B2830-E718-11CF-893D-00A0C9054228}\1.0\0\win64'
'Registry::HKEY_CLASSES_ROOT\TypeLib\{420B2830-E718-11CF-893D-00A0C9054228}\1.0\0'
'Registry::HKEY_CLASSES_ROOT\TypeLib\{420B2830-E718-11CF-893D-00A0C9054228}\1.0\FLAGS'
'Registry::HKEY_CLASSES_ROOT\TypeLib\{420B2830-E718-11CF-893D-00A0C9054228}\1.0\HELPDIR'
'Registry::HKEY_CLASSES_ROOT\TypeLib\{420B2830-E718-11CF-893D-00A0C9054228}\1.0'
'Registry::HKEY_CLASSES_ROOT\TypeLib\{420B2830-E718-11CF-893D-00A0C9054228}'
)
foreach($regPath in $regPaths) {
Set-Ownership -Path $regPath -Identity 'BUILTIN\Administrators' -AddFullControl -Recurse -Verbose
}
#endregion
#region unregister the FileSystemObject scrrun dll
C:\Windows\System32\regsvr32.exe scrrun.dll /u /s
#endregion
#region Test FileSystemObject ComObject (Should fail)
(New-Object -ComObject Scripting.FileSystemObject).Drives
#endregion
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