模拟和目录条目

Question

我成功模拟了一个用户帐户，但我无法使用模拟帐户绑定到 AD 并下拉 DirectoryEntry。

以下代码输出：

• 冒充之前我是：DOMAIN\user
• 冒充后我是：DOMAIN\admin
• 错误：C:\Users\user\ADSI_Impersonation\bin\Debug\ADSI_Impersonation.exe samaccountname：

我的问题似乎类似于：

How to use the System.DirectoryServices namespace in ASP.NET

我正在获得一个主令牌。我了解我需要使用委托来在远程计算机上使用模拟令牌。我确认该帐户没有选中“帐户敏感且无法委派”标志。我还确认本地组策略和域组策略不会阻止委派：

计算机配置\Windows 设置\安全设置\本地策略\用户权限分配\

我错过了什么？

谢谢！

using System;
using System.DirectoryServices;
using System.Security;
using System.Security.Principal;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;
using System.Runtime.ConstrainedExecution;

namespace ADSI_Impersonation
{
    class Program
    {
        [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
        public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword,
            int dwLogonType, int dwLogonProvider, out SafeTokenHandle phToken);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern bool CloseHandle(IntPtr handle);

        static void Main(string[] args)
        {
            const int LOGON32_PROVIDER_DEFAULT = 0;
            const int LOGON32_LOGON_INTERACTIVE = 2;

            string userName = "admin@domain.com";
            string password = "password";

            Console.WriteLine("Before impersonation I am: " + WindowsIdentity.GetCurrent().Name);

            SafeTokenHandle safeTokenHandle;

            try
            {
                bool returnValue = LogonUser(userName, null, password,
                    LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT,
                    out safeTokenHandle);

                if (returnValue)
                {
                    WindowsIdentity newId = new WindowsIdentity(safeTokenHandle.DangerousGetHandle());
                    WindowsImpersonationContext impersonatedUser = newId.Impersonate();
                }
                else
                {
                    Console.WriteLine("Unable to create impersonatedUser.");
                    return;
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("Authentication error.\r\n" + e.Message);
            }

            Console.WriteLine("After impersonation I am: " + WindowsIdentity.GetCurrent().Name);

            string OU = "LDAP://dc=domain,dc=com";
            DirectoryEntry entry = new DirectoryEntry(OU);
            entry.AuthenticationType = AuthenticationTypes.Secure;

            DirectorySearcher mySearcher = new DirectorySearcher();
            mySearcher.SearchRoot = entry;
            mySearcher.SearchScope = System.DirectoryServices.SearchScope.Subtree;
            mySearcher.PropertiesToLoad.Add("cn");
            mySearcher.PropertiesToLoad.Add("samaccountname");

            string cn = "fistname mi. lastname";
            string samaccountname = "";

            try
            {
                // Create the LDAP query and send the request
                mySearcher.Filter = "(cn=" + cn + ")";

                SearchResultCollection searchresultcollection = mySearcher.FindAll();

                DirectoryEntry ADentry = searchresultcollection[0].GetDirectoryEntry();

                Console.WriteLine("samaccountname: " + ADentry.Properties["samaccountname"].Value.ToString());
            }
            catch (Exception e)
            {
                Console.WriteLine("Error: " + e.Message);
            }

            Console.WriteLine("samaccountname: " + samaccountname);
            Console.ReadLine();
        }
    }

    public sealed class SafeTokenHandle : SafeHandleZeroOrMinusOneIsInvalid
    {
        private SafeTokenHandle()
            : base(true)
        {
        }

        [DllImport("kernel32.dll")]
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
        [SuppressUnmanagedCodeSecurity]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static extern bool CloseHandle(IntPtr handle);

        protected override bool ReleaseHandle()
        {
            return CloseHandle(handle);
        }
    }
}

Answer 1

许多 .NET API 没有考虑您的手动模拟，例如您注意到的 LDAP 查询。因此，您需要改用 DirectoryEntry 的重载构造函数，

http://msdn.microsoft.com/en-us/library/bw8k1as4.aspx

http://msdn.microsoft.com/en-us/library/wh2h7eed.aspx

Answer 2

错误（0x80004005）：未指定的错误

我在连接到远程 Windows 时遇到了一些问题，错误是 Error (0x80004005): Unspecified error。我解决如下：

//Define path
//This path uses the full path of user authentication
String path = string.Format("WinNT://{0}/{1},user", server_address, username);
DirectoryEntry deBase = null;
try
{
    //Try to connect with secure connection
    deBase = new DirectoryEntry(path, username, _passwd, AuthenticationTypes.Secure);

    //Connection test
    //After test define the deBase with the parent of user (root container)
    object nativeObject = deBase.NativeObject;
    deBase = deBase.Parent;

}
catch (Exception ex)
{
    //If an error occurred try without Secure Connection
    try
    {
        deBase = new DirectoryEntry(path, username, _passwd);

        //Connection test
        //After test define the deBase with the parent of user (root container)
        object nativeObject = deBase.NativeObject;
        deBase = deBase.Parent;
        nativeObject = deBase.NativeObject;

    }
    catch (Exception ex2)
    {
        //If an error occurred throw the error
        throw ex2;
    }
}

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