SSDT表的遍历（源码）

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//VS2005创建的工程，系统xp sp2
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//stdafx.h文件
#ifndef _WIN32_WINNT // Allow use of features specific to Windows XP or later.
#define _WIN32_WINNT 0x0501 // Change this to the appropriate value to target other versions of Windows.
#endif
#ifdef __cplusplus
extern "C"
{
#endif
#include <ntddk.h>
#include <ntddstor.h>
#include <mountdev.h>
#include <ntddvol.h>
//注意：全局变量要在这里定义
//系统服务描述符表-在ntoskrnl.exe中导出KeServiceDescriptorTable这个表
#pragma pack(1)
typedef struct _ServiceDescriptorTable
{
//System Service Dispatch Table的基地址
PVOID ServiceTableBase;
//SSDT中每个服务被调用次数的计数器。这个计数器一般由sysenter 更新。
PVOID ServiceCounterTable;
//由 ServiceTableBase 描述的服务的数目。
unsigned int NumberOfServices;
//每个系统服务参数字节数表的基地址-系统服务参数表SSPT
PVOID ParamTableBase;
}*PServiceDescriptorTable;
#pragma pack()
//导出系统服务描述符表SSDT的指针
extern PServiceDescriptorTable KeServiceDescriptorTable;
#ifdef __cplusplus
}
#endif
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//ReadSsdtForFuntion.cpp文件
#include "stdafx.h"
//由SSDT索引号获取当前函数地址,如：
//NtOpenProcess [[KeServiceDescriptorTable]+0x7A*4]
void ReadSsdtForFuntionUnload(IN PDRIVER_OBJECT DriverObject);
NTSTATUS ReadSsdtForFuntionCreateClose(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
NTSTATUS ReadSsdtForFuntionDefaultHandler(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
//1.纯汇编读取内核函数的地址
LONG GetFunctionAddr_ASM(PServiceDescriptorTable KeServiceDescriptorTable, LONG lgSsdtIndex);
//2.用指针读取内核函数的地址
LONG GetFunticonAddr(PServiceDescriptorTable KeServiceDescriptorTable, LONG lgSsdtIndex);
#ifdef __cplusplus
extern "C" NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath);
#endif
NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath)
{
UNICODE_STRING DeviceName,Win32Device;
PDEVICE_OBJECT DeviceObject = NULL;
NTSTATUS status;
unsigned i;
//SSDT表的范围
LONG lgSsdtNumber = -1;
RtlInitUnicodeString(&DeviceName,L"\\Device\\ReadSsdtForFuntion0");
RtlInitUnicodeString(&Win32Device,L"\\DosDevices\\ReadSsdtForFuntion0");
//设置默认处理例程
for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++)
DriverObject->MajorFunction[i] = ReadSsdtForFuntionDefaultHandler;
//设置创建例程
DriverObject->MajorFunction[IRP_MJ_CREATE] = ReadSsdtForFuntionCreateClose;
//设置关闭例程
DriverObject->MajorFunction[IRP_MJ_CLOSE] = ReadSsdtForFuntionCreateClose;
//设置卸载例程
DriverObject->DriverUnload = ReadSsdtForFuntionUnload;
//创建设备对象
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;
//创建符号连接
status = IoCreateSymbolicLink(&Win32Device, &DeviceName);
if (!NT_SUCCESS(status))
return status;
//初始化完成，可以工作了
DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
//设置测试断点
__asm int 3
//获取SSDT表的范围
lgSsdtNumber = KeServiceDescriptorTable->NumberOfServices;
//使用方法1.遍历SSDT
KdPrint(("使用方法1.遍历SSDT\r\n"));
for (i = 0; i < lgSsdtNumber; i++)
{
KdPrint(("Index:%04X--FunAddr:%08X\r\n", i, GetFunctionAddr_ASM(KeServiceDescriptorTable, i)));
}
//使用方法2.遍历SSDT
KdPrint(("使用方法2.遍历SSDT\r\n"));
for (i = 0; i < lgSsdtNumber; i++)
{
KdPrint(("Index:%04X--FunAddr:%08X\r\n", i, GetFunticonAddr(KeServiceDescriptorTable, i)));
}
return STATUS_SUCCESS;
}
//1.使用汇编的方法读取内核函数的地址
LONG GetFunctionAddr_ASM(PServiceDescriptorTable KeServiceDescriptorTable, LONG lgSsdtIndex)
{
LONG lgSsdtFunAddr = 0;
//lgSsdtFunAddr = [[KeServiceDescriptorTable]+lgSsdtIndex*4]
__asm
{
push ebx
push eax
mov ebx, KeServiceDescriptorTable
mov ebx, [ebx] //SSDT表的基地址
mov eax, lgSsdtIndex
shl eax, 2
add ebx, eax
mov ebx, [ebx]
mov lgSsdtFunAddr, ebx
pop eax
pop ebx
}
return lgSsdtFunAddr;
}
//2.使用指针的方法获取函数的地址
LONG GetFunticonAddr(PServiceDescriptorTable KeServiceDescriptorTable, LONG lgSsdtIndex)
{
LONG lgSsdtAddr = 0;
//获取SSDT表的基址
lgSsdtAddr = (LONG)KeServiceDescriptorTable->ServiceTableBase;
PLONG plgSsdtFunAddr = 0;
//获取内核函数的地址指针
plgSsdtFunAddr = (PLONG)(lgSsdtAddr+lgSsdtIndex*4);
//返回内核函数的地址
return (*plgSsdtFunAddr);
}
void ReadSsdtForFuntionUnload(IN PDRIVER_OBJECT DriverObject)
{
UNICODE_STRING Win32Device;
RtlInitUnicodeString(&Win32Device,L"\\DosDevices\\ReadSsdtForFuntion0");
IoDeleteSymbolicLink(&Win32Device);
IoDeleteDevice(DriverObject->DeviceObject);
}
NTSTATUS ReadSsdtForFuntionCreateClose(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
{
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
NTSTATUS ReadSsdtForFuntionDefaultHandler(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
{
Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return Irp->IoStatus.Status;
}
//参考资料：
//郁金香老师讲课资料

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