Question

我已经创建了一个用户定义的函数并执行了。它返回以下错误消息。需要你的支持。

#include <ntddk.h>
#include <wdmsec.h>

#define control_device_object_symbol L"\\?\\cdosym_ssdt"

const GUID ssdt_hook_uuid = { 0xd47bf014L,0x7b37,0x11e7,{0xba,0x6f,0x00,0x0c,0x29,0xf3,0x4e,0xca} };
PDEVICE_OBJECT gdo = NULL;//for IoCreateDeviceSecure use<global device object>
ULONG g_index = 0;

NTSTATUS DriverEntry(PDRIVER_OBJECT driver, PUNICODE_STRING regPath)
{
    DbgBreakPoint();
    NTSTATUS status;
    ULONG i;
    ULONG index;

    UNICODE_STRING sddl = RTL_CONSTANT_STRING(L"D:P(A;;GA;;;WD)");
    UNICODE_STRING control_device_object = RTL_CONSTANT_STRING(L"\\Device\\cdo_ssdt");
    UNICODE_STRING control_device_symbol = RTL_CONSTANT_STRING(control_device_object_symbol);

    status = IoCreateDeviceSecure(driver, 0, &control_device_object, FILE_DEVICE_UNKNOWN, FILE_DEVICE_SECURE_OPEN, FALSE, &sddl, (LPCGUID)&ssdt_hook_uuid, &gdo);
    if (!NT_SUCCESS(status))
    {
        DbgPrint("    [-] IoCreateDeviceSecure error.\n");
        return status;
    }

    status = IoDeleteSymbolicLink(&control_device_symbol);
    status = IoCreateSymbolicLink(&control_device_symbol, &control_device_object);
    if (!NT_SUCCESS(status))
    {
        DbgPrint("    [-] IoCreateSymbolicLink error while status=0x%X.\n",status);
        IoDeleteDevice(gdo);
        return status;
    }
}

错误：

Msg 6522，Level 16，State 2，Line 11发生了.NET Framework错误   在执行用户定义的例程或聚合期间   “SqlFunctValidateUserCred”：System.FormatException：无效长度   对于Base-64 char数组或字符串。 System.FormatException：at   System.Convert.FromBase64_Decode（Char * startInputPtr，Int32   inputLength，Byte * startDestPtr，Int32 destLength）at   System.Convert.FromBase64CharPtr（Char * inputPtr，Int32 inputLength）
  在System.Convert.FromBase64String（String s）at   System.Web.Helpers.Crypto.VerifyHashedPassword（String hashedPassword，   UserDefinedFunctions.SqlFunctValidateUserCred（）
中的字符串密码

Answer 1

{{3}}：

参数
  hashedPassword
  类型：System.String
  先前计算的RFC 2898哈希值为基本64位编码的字符串。

读取。

Answer 2

您可以尝试以下操作：

public static void AddUsersToDatabase(string databaseserver, string databasename, string usertobeadded)
{
    using (SqlConnection conn = 
        new SqlConnection("server=" + databaseserver + 
                        "; database=" + databasename + 
                        "; User ID=WPDOMAIN\\spdev; Integrated Security=SSPI;  password=Password123;"))
    {
        conn.Open();
        string password = "Password123";
        string sql = "CREATE LOGIN " + usertobeadded + " WITH PASSWORD = '" +
        password + "';  USE " + databasename + "; CREATE USER " + usertobeadded + " FOR LOGIN " + usertobeadded + ";";

        SqlCommand cmd = new SqlCommand(sql);
        cmd.ExecuteNonQuery();


        conn.Close();
    }
}

SQL CLR - Base-64 char数组或字符串的长度无效

2 个答案: