如何自己写xuetr（一） 每次改变的驱动名和服务名

首先要获取驱动模块的文件名字，根据每次文件名字的不同进行生成，名字可以从链表获得：

 

typedef struct _LDR_DATA_TABLE_ENTRY {

LIST_ENTRY InLoadOrderLinks;

LIST_ENTRY InMemoryOrderLinks;

LIST_ENTRY InInitializationOrderLinks;

PVOID DllBase;

PVOID EntryPoint;

ULONG SizeOfImage;

UNICODE_STRING FullDllName;

UNICODE_STRING BaseDllName;

}LDR_DATA_TABLE_ENTRY,*PLDR_DATA_TABLE_ENTRY;

//上面这个结构体需要自己定义

 

static PLDR_DATA_TABLE_ENTRY GetSysList(PDRIVER_OBJECT DriverObject)

{

PLDR_DATA_TABLE_ENTRY ldr = (PLDR_DATA_TABLE_ENTRY)DriverObject->DriverSection;

return ldr;

}

PLDR_DATA_TABLE_ENTRY pSysList = NULL;

pSysList = GetSysList(DriverObject);//从DriverEntry获取驱动链表的节点信息。

 

 

// 拼字符串创建服务名字

static NTSTATUS XCreateDriverName(IN PDRIVER_OBJECT DriverObject,UNICODE_STRING BaseDllName)

{

UNICODE_STRING DeviceName,Win32Device;

PDEVICE_OBJECT DeviceObject = NULL;

NTSTATUS status;

 

P_USTR(&BaseDllName);

 

WCHAR strDevice[256];

RtlInitEmptyUnicodeString(&DeviceName,strDevice,sizeof(strDevice));

RtlAppendUnicodeToString(&DeviceName,L"\\Device\\");

RtlAppendUnicodeStringToString(&DeviceName,&BaseDllName);

P_USTR(&DeviceName);

 

WCHAR strDosDevices[256];

RtlInitEmptyUnicodeString(&Win32Device,strDosDevices,sizeof(strDosDevices));

RtlAppendUnicodeToString(&Win32Device,L"\\DosDevices\\");

RtlAppendUnicodeStringToString(&Win32Device,&BaseDllName);

P_USTR(&Win32Device);

 

status = IoCreateDevice(DriverObject,

0,

&DeviceName,

FILE_DEVICE_UNKNOWN,

0,

FALSE,

&DeviceObject);

if (!NT_SUCCESS(status))

return status;

if (!DeviceObject)

return STATUS_UNEXPECTED_IO_ERROR;

 

DeviceObject->Flags |= DO_DIRECT_IO;

DeviceObject->AlignmentRequirement = FILE_WORD_ALIGNMENT;

status = IoCreateSymbolicLink(&Win32Device, &DeviceName);

 

DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;

 

return STATUS_SUCCESS;

}

 

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