Ndtyjky

Hello and my problem today is I was trying out a new/old method of writing memory with a system files(.sys) after watching Zer0Mem0ry's video on the subject. But I tried to copy but came with the error :

 Error C4013 'MmCopyVirtualMemory' undefined; assuming extern returning int

Even after having done everything. So I was wondering if I had to define this function or importation would be enough. Any help would be amazing!
My Code(driver.c)

https://pastebin.com/AfBUGFCh

Couldn't paste code for some reason.

#include "driver.h"

#include <ntddk.h>

#include "driver.tmh"

#pragma comment(lib, "Ntoskrnl.lib")



#ifdef ALLOC_PRAGMA

#pragma alloc_text (INIT, DriverEntry)

#pragma alloc_text (PAGE, CallOfDutySysFileEvtDeviceAdd)

#pragma alloc_text (PAGE, CallOfDutySysFileEvtDriverContextCleanup)

#endif



NTSTATUS KeReadProcessMemory(PEPROCESS Process, PVOID SourceAddress, PVOID TargetAddress, SIZE_T Size)

{

    PEPROCESS SourceProcess = Process;

    PEPROCESS TargetProcess = PsGetCurrentProcess();

    SIZE_T Result;

    if (NT_SUCCESS(MmCopyVirtualMemory(SourceProcess, SourceAddress, TargetProcess, TargetAddress, Size, KernelMode, &Result)))

        return STATUS_SUCCESS;

    else

        return STATUS_ACCESS_DENIED;

}

NTSTATUS KeWriteProcessMemory(PEPROCESS Process, PVOID SourceAddress, PVOID TargetAddress, SIZE_T Size)

{

    PEPROCESS SourceProcess = PsGetCurrentProcess();

    PEPROCESS TargetProcess = Process;

    SIZE_T Result;



    if (NT_SUCCESS(MmCopyVirtualMemory(SourceProcess, SourceAddress, TargetProcess, TargetAddress, Size, KernelMode, &Result)))

        return STATUS_SUCCESS;

    else

        return STATUS_ACCESS_DENIED;



}



NTSTATUS

DriverEntry(_In_ PDRIVER_OBJECT  DriverObject, _In_ PUNICODE_STRING RegistryPath)

{

    WDF_DRIVER_CONFIG config;

    NTSTATUS status;

    WDF_OBJECT_ATTRIBUTES attributes;

    WPP_INIT_TRACING(DriverObject, RegistryPath);

    TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DRIVER, "%!FUNC! Entry");

    WDF_OBJECT_ATTRIBUTES_INIT(&attributes);

    attributes.EvtCleanupCallback = CallOfDutySysFileEvtDriverContextCleanup;



    WDF_DRIVER_CONFIG_INIT(&config,

                           CallOfDutySysFileEvtDeviceAdd

                           );



    status = WdfDriverCreate(DriverObject,

                             RegistryPath,

                             &attributes,

                             &config,

                             WDF_NO_HANDLE

                             );



    if (!NT_SUCCESS(status)) {

        TraceEvents(TRACE_LEVEL_ERROR, TRACE_DRIVER, "WdfDriverCreate failed %!STATUS!", status);

        WPP_CLEANUP(DriverObject);

        return status;

    }



    TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DRIVER, "%!FUNC! Exit");







    return status;

}



NTSTATUS

CallOfDutySysFileEvtDeviceAdd(

    _In_    WDFDRIVER       Driver,

    _Inout_ PWDFDEVICE_INIT DeviceInit

    )

{

    NTSTATUS status;



    UNREFERENCED_PARAMETER(Driver);



    PAGED_CODE();



    TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DRIVER, "%!FUNC! Entry");



    status = CallOfDutySysFileCreateDevice(DeviceInit);



    TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DRIVER, "%!FUNC! Exit");



    return status;

}



VOID

CallOfDutySysFileEvtDriverContextCleanup(

    _In_ WDFOBJECT DriverObject

    )

{

    UNREFERENCED_PARAMETER(DriverObject);



    PAGED_CODE();



    TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DRIVER, "%!FUNC! Entry");



    WPP_CLEANUP(WdfDriverWdmGetDriverObject((WDFDRIVER)DriverObject));

}