forked from extern/BloatyNosy
311 lines
16 KiB
PowerShell
311 lines
16 KiB
PowerShell
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[cmdletbinding()]
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param (
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[Parameter(Mandatory=$true)] [ValidateNotNullOrEmpty()] [string]
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$Username,
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[Parameter(Mandatory=$true)] [ValidateNotNullOrEmpty()] [System.Security.SecureString]
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$Password,
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[string]
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$Domain,
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[Int]
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$AutoLogonCount,
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[switch]
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$RemoveLegalPrompt,
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[System.IO.FileInfo]
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$BackupFile
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)
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begin {
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[string] $WinlogonPath = "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\Winlogon"
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[string] $WinlogonBannerPolicyPath = "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System"
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[string] $Enable = 1
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[string] $Disable = 0
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#region C# Code to P-invoke LSA LsaStorePrivateData function.
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Add-Type @"
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Runtime.InteropServices;
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namespace ComputerSystem
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{
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public class LSAutil
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{
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[StructLayout(LayoutKind.Sequential)]
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private struct LSA_UNICODE_STRING
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{
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public UInt16 Length;
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public UInt16 MaximumLength;
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public IntPtr Buffer;
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}
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[StructLayout(LayoutKind.Sequential)]
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private struct LSA_OBJECT_ATTRIBUTES
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{
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public int Length;
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public IntPtr RootDirectory;
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public LSA_UNICODE_STRING ObjectName;
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public uint Attributes;
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public IntPtr SecurityDescriptor;
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public IntPtr SecurityQualityOfService;
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}
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private enum LSA_AccessPolicy : long
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{
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POLICY_VIEW_LOCAL_INFORMATION = 0x00000001L,
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POLICY_VIEW_AUDIT_INFORMATION = 0x00000002L,
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POLICY_GET_PRIVATE_INFORMATION = 0x00000004L,
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POLICY_TRUST_ADMIN = 0x00000008L,
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POLICY_CREATE_ACCOUNT = 0x00000010L,
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POLICY_CREATE_SECRET = 0x00000020L,
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POLICY_CREATE_PRIVILEGE = 0x00000040L,
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POLICY_SET_DEFAULT_QUOTA_LIMITS = 0x00000080L,
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POLICY_SET_AUDIT_REQUIREMENTS = 0x00000100L,
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POLICY_AUDIT_LOG_ADMIN = 0x00000200L,
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POLICY_SERVER_ADMIN = 0x00000400L,
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POLICY_LOOKUP_NAMES = 0x00000800L,
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POLICY_NOTIFICATION = 0x00001000L
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}
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[DllImport("advapi32.dll", SetLastError = true, PreserveSig = true)]
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private static extern uint LsaRetrievePrivateData(
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IntPtr PolicyHandle,
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ref LSA_UNICODE_STRING KeyName,
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out IntPtr PrivateData
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);
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[DllImport("advapi32.dll", SetLastError = true, PreserveSig = true)]
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private static extern uint LsaStorePrivateData(
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IntPtr policyHandle,
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ref LSA_UNICODE_STRING KeyName,
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ref LSA_UNICODE_STRING PrivateData
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);
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[DllImport("advapi32.dll", SetLastError = true, PreserveSig = true)]
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private static extern uint LsaOpenPolicy(
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ref LSA_UNICODE_STRING SystemName,
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ref LSA_OBJECT_ATTRIBUTES ObjectAttributes,
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uint DesiredAccess,
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out IntPtr PolicyHandle
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);
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[DllImport("advapi32.dll", SetLastError = true, PreserveSig = true)]
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private static extern uint LsaNtStatusToWinError(
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uint status
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);
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[DllImport("advapi32.dll", SetLastError = true, PreserveSig = true)]
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private static extern uint LsaClose(
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IntPtr policyHandle
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);
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[DllImport("advapi32.dll", SetLastError = true, PreserveSig = true)]
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private static extern uint LsaFreeMemory(
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IntPtr buffer
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);
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private LSA_OBJECT_ATTRIBUTES objectAttributes;
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private LSA_UNICODE_STRING localsystem;
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private LSA_UNICODE_STRING secretName;
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public LSAutil(string key)
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{
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if (key.Length == 0)
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{
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throw new Exception("Key lenght zero");
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}
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objectAttributes = new LSA_OBJECT_ATTRIBUTES();
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objectAttributes.Length = 0;
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objectAttributes.RootDirectory = IntPtr.Zero;
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objectAttributes.Attributes = 0;
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objectAttributes.SecurityDescriptor = IntPtr.Zero;
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objectAttributes.SecurityQualityOfService = IntPtr.Zero;
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localsystem = new LSA_UNICODE_STRING();
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localsystem.Buffer = IntPtr.Zero;
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localsystem.Length = 0;
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localsystem.MaximumLength = 0;
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secretName = new LSA_UNICODE_STRING();
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secretName.Buffer = Marshal.StringToHGlobalUni(key);
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secretName.Length = (UInt16)(key.Length * UnicodeEncoding.CharSize);
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secretName.MaximumLength = (UInt16)((key.Length + 1) * UnicodeEncoding.CharSize);
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}
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private IntPtr GetLsaPolicy(LSA_AccessPolicy access)
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{
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IntPtr LsaPolicyHandle;
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uint ntsResult = LsaOpenPolicy(ref this.localsystem, ref this.objectAttributes, (uint)access, out LsaPolicyHandle);
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uint winErrorCode = LsaNtStatusToWinError(ntsResult);
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if (winErrorCode != 0)
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{
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throw new Exception("LsaOpenPolicy failed: " + winErrorCode);
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}
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return LsaPolicyHandle;
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}
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private static void ReleaseLsaPolicy(IntPtr LsaPolicyHandle)
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{
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uint ntsResult = LsaClose(LsaPolicyHandle);
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uint winErrorCode = LsaNtStatusToWinError(ntsResult);
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if (winErrorCode != 0)
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{
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throw new Exception("LsaClose failed: " + winErrorCode);
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}
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}
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public void SetSecret(string value)
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{
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LSA_UNICODE_STRING lusSecretData = new LSA_UNICODE_STRING();
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if (value.Length > 0)
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{
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//Create data and key
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lusSecretData.Buffer = Marshal.StringToHGlobalUni(value);
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lusSecretData.Length = (UInt16)(value.Length * UnicodeEncoding.CharSize);
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lusSecretData.MaximumLength = (UInt16)((value.Length + 1) * UnicodeEncoding.CharSize);
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}
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else
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{
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//Delete data and key
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lusSecretData.Buffer = IntPtr.Zero;
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lusSecretData.Length = 0;
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lusSecretData.MaximumLength = 0;
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}
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IntPtr LsaPolicyHandle = GetLsaPolicy(LSA_AccessPolicy.POLICY_CREATE_SECRET);
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uint result = LsaStorePrivateData(LsaPolicyHandle, ref secretName, ref lusSecretData);
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ReleaseLsaPolicy(LsaPolicyHandle);
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uint winErrorCode = LsaNtStatusToWinError(result);
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if (winErrorCode != 0)
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{
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throw new Exception("StorePrivateData failed: " + winErrorCode);
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}
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}
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}
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}
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"@
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#endregion
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}
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process {
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try {
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$ErrorActionPreference = "Stop"
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$decryptedPass = [Runtime.InteropServices.Marshal]::PtrToStringAuto(
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[Runtime.InteropServices.Marshal]::SecureStringToBSTR($Password)
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)
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if ($BackupFile) {
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# Initialize the hash table with a string comparer to allow case sensitive keys.
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# This allows differentiation between the winlogon and system policy logon banner strings.
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$OrigionalSettings = New-Object System.Collections.Hashtable ([system.stringcomparer]::CurrentCulture)
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$OrigionalSettings.AutoAdminLogon = (Get-ItemProperty $WinlogonPath ).AutoAdminLogon
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$OrigionalSettings.ForceAutoLogon = (Get-ItemProperty $WinlogonPath).ForceAutoLogon
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$OrigionalSettings.DefaultUserName = (Get-ItemProperty $WinlogonPath).DefaultUserName
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$OrigionalSettings.DefaultDomainName = (Get-ItemProperty $WinlogonPath).DefaultDomainName
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$OrigionalSettings.DefaultPassword = (Get-ItemProperty $WinlogonPath).DefaultPassword
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$OrigionalSettings.AutoLogonCount = (Get-ItemProperty $WinlogonPath).AutoLogonCount
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# The winlogon logon banner settings.
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$OrigionalSettings.LegalNoticeCaption = (Get-ItemProperty $WinlogonPath).LegalNoticeCaption
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$OrigionalSettings.LegalNoticeText = (Get-ItemProperty $WinlogonPath).LegalNoticeText
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# The system policy logon banner settings.
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$OrigionalSettings.legalnoticecaption = (Get-ItemProperty $WinlogonBannerPolicyPath).legalnoticecaption
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$OrigionalSettings.legalnoticetext = (Get-ItemProperty $WinlogonBannerPolicyPath).legalnoticetext
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$OrigionalSettings | Export-Clixml -Depth 10 -Path $BackupFile
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}
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# Store the password securely.
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$lsaUtil = New-Object ComputerSystem.LSAutil -ArgumentList "DefaultPassword"
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$lsaUtil.SetSecret($decryptedPass)
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# Store the autologon registry settings.
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Set-ItemProperty -Path $WinlogonPath -Name AutoAdminLogon -Value $Enable -Force
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Set-ItemProperty -Path $WinlogonPath -Name DefaultUserName -Value $Username -Force
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Set-ItemProperty -Path $WinlogonPath -Name DefaultDomainName -Value $Domain -Force
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if ($AutoLogonCount) {
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Set-ItemProperty -Path $WinlogonPath -Name AutoLogonCount -Value $AutoLogonCount -Force
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} else {
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Remove-ItemProperty -Path $WinlogonPath -Name AutoLogonCount -ErrorAction SilentlyContinue
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}
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if ($RemoveLegalPrompt) {
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Set-ItemProperty -Path $WinlogonPath -Name LegalNoticeCaption -Value $null -Force
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Set-ItemProperty -Path $WinlogonPath -Name LegalNoticeText -Value $null -Force
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Set-ItemProperty -Path $WinlogonBannerPolicyPath -Name legalnoticecaption -Value $null -Force
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Set-ItemProperty -Path $WinlogonBannerPolicyPath -Name legalnoticetext -Value $null -Force
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}
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} catch {
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throw 'Failed to set auto logon. The error was: "{0}".' -f $_
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}
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}
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<#
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.SYNOPSIS
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Enables auto logon using the specified username and password.
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.PARAMETER Username
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The username of the user to automatically logon as.
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.PARAMETER Password
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The password for the user to automatically logon as.
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.PARAMETER Domain
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The domain of the user to automatically logon as.
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.PARAMETER AutoLogonCount
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The number of logons that auto logon will be enabled.
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.PARAMETER RemoveLegalPrompt
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Removes the system banner to ensure interventionless logon.
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.PARAMETER BackupFile
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If specified the existing settings such as the system banner text will be backed up to the specified file.
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.EXAMPLE
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PS C:\> Set-SecureAutoLogon `
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-Username $env:USERNAME `
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-Password (Read-Host -AsSecureString) `
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-AutoLogonCount 2 `
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-RemoveLegalPrompt `
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-BackupFile "C:\WinlogonBackup.xml"
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.INPUTS
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None.
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.OUTPUTS
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None.
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.NOTES
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Revision History:
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2011-04-19 : Andy Arismendi - Created.
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2011-09-29 : Andy Arismendi - Changed to use LSA secrets to store password securely.
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.LINK
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http://support.microsoft.com/kb/324737
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.LINK
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http://msdn.microsoft.com/en-us/library/aa378750
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#>
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