Hope this guide will help you when you see the register reading kernel.

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    Finally, I need to read the settings from the Windows registry (preferred) or from a file. The switch is a kernel driver that is actually configured to run with the type set to SYSTEM, so most services and WinAPIs are not strictly necessary these days.

    I’m trying to use the order part of the RtlQueryRegistryValues function to read the actual value of a single row from the PC, but no matter what I do, I get the same 0xC0000034< to return /code> error coupon, which translates to STATUS_OBJECT_NAME_NOT_FOUND.

    According to the documentation available on MSDN, STATUS_OBJECT_NAME_NOT_FOUND is returned using RtlQueryRegistryValues when the path parameter does not match a valid key or a special flag is set and the condition is met. the categorical flag is not respected. As far as I can tell, the registry keys do show up in my test, and on the computer I don't use the RTL_QUERY_REGISTRY_REQUIRED flag.

    The PC values ​​I'm trying to read are usually found under HKEY_LOCAL_MACHINE/SOFTWARE/company/ProjectName. I am trying to get the default valueniyu, and the REG_SZ value named parameter . The RtlQueryRegistryValues call is made during the DriverEntry(...) step of loading the generic driver.

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  • I can't figure out what I'm doing wrong as I'm new to kernel truckers and the debugging process is quite lengthy, I'm not sure I'm doing a lot but I'm just referencing these register values ​​incorrectly or if the most important register is available at this stage of the program launch.

    NTSTATUS(...) driver entry    NTSTATUSregStatus=0;    data UNICODE_STRING;    Query RTL_QUERY_REGISTRY_TABLE[2];    WCHAR* regPath = L"RegistryMachineSOFTWARECompanyProject name";    RtlZeroMemory(query, size (RTL_QUERY_REGISTRY_TABLE) * 2);    data.buffer = NULL;    data max length = 0;    Data. length = 0;   // Request[0].Name = L"Parameter";    Query[0].Name = L""; // L"" refers to the default value    query[0].= flags RTL_QUERY_REGISTRY_DIRECT;    request[0].EntryContext = &data;    regStatus = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE, regPath, query, NULL, null);   DebugPrint("regStatus: %lxn", regStatus);    DebugPrint("Data: %wZn", &Data);

    The RtlQueryRegistryValues ​​routine allows the caller to getmultiple values ​​from your computer's Windows registry subtree in one call.

    Syntax

    NTSYSAPI NTSTATUS RtlQueryRegistryValues(  [in] ULONG RelativeTo,  [in] PCWSTR path,  [in, out] Query table PRTL_QUERY_REGISTRY_TABLE,  [in, optional] PVOID context,  [in, optional] PVOID environment);

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    read registry kernel

    Indicates whether the path is a raw registry path or relative to a predefined path because it is wired that way.

    value Value
    RTL_REGISTRY_ABSOLUTE
    A path is a record of an absolute route.
    RTL_REGISTRY_CONTROL
    The path is relative to RegistryMachineSystemCurrentControlSetControl.
    RTL_REGISTRY_DEVICEMAP
    The path can be relative to RegistryMachineHardwareDeviceMap.
    RTL_REGISTRY_SERVICES
    The path is relative to RegistryMachineSystemCurrentControlSetServices.
    RTL_REGISTRY_USER
    The path is relative to RegistryUserCurrentUser. (For a new system process, this might be User.Default.)
    RTL_REGISTRY_WINDOWS_NT
    The path is relative to RegistryMachineSoftwareMicrosoftWindows NTCurrentVersion.

    read registry kernel

    Rating RelativeTo can be Change by doing a bitwise OR which is equal to one with the correct flags.

    RTL_REGISTRY_OPTIONAL
    Specifies that the key referenced by this parameter type and the Path parameter are often optional.
    RTL_REGISTRY_HANDLE
    Indicates that the Path parameter is actually the register processing time to use.

    A pointer to an absolute registry setting, or a relative path to its known location, as specified by relativeto. Note that names using keys in such a path must be known to the caller, as well as the last key in the path. If the RTL_REGISTRY_HANDLE flag is specified, this parameter is a register for directly querying an already public key.

    A pointer to a table of one or more pages of values ​​and subsection names that are of interest to each of our callers. Each table access contains the address of one caller-provided QueryRoutine function, identified as for each value name that is certainly available in the registry. TablesIt actually ends up with a NULL table for easy access, which is a table lookup with a NULL QueryRoutine member and therefore a NULL Name member. The creation of query table entries is described as follows:

    structure typedef _RTL_QUERY_REGISTRY_TABLE    PRTL_QUERY_REGISTRY_ROUTINE Query procedure;    ULONG flags;    PWSTR name;    input PVOID context;    The default type is ULONG;    default PVOID data;    ULONG standard length; RTL_QUERY_REGISTRY_TABLE, *PRTL_QUERY_REGISTRY_TABLE;

    If the caller allocates the memory referenced by the query table as a QueryTable parameter type, the caller can free that memory after the particular call to RtlQueryRegistryValues ​​returns.

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