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RING0 与 RING3之间的简单交互
叫简单交互的原因是,只从ring3传给ring0一个变量的值,不涉及到锁事件的问题(有点像多线程的那个东东...)。这里我使用了最简单的例子,就是SSDT HOOK NtOpenProcess. ring3的应用程序将自己的PID传给ring0的驱动,驱动hook NtOpenProcess之后就无法从任务管理器终止应用程序了。
加载驱动的方式用的是SCM....而且是《windows程序设计里》封装之后的CDRIVER类...(我承认我有点懒了....以后在用ZWLoadDriver 或者别的什么 rootkit.com里面有篇文章讲了好多种...)
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// SSDT NtOpenProcess,
//FIRSTDRIVER.C
//2008年5月10日
#include <ntddk.h>
#include <stdlib.h>
#include "IoCTL.h"
// 自定义函数的声明
NTSTATUS DispatchCreateClose(PDEVICE_OBJECT pDevObj, PIRP pIrp);
void DriverUnload(PDRIVER_OBJECT pDriverObj);
NTSTATUS DispatchIoctl(PDEVICE_OBJECT pDevObj, PIRP pIrp);VOID Hook();
VOID UnHook();
// 驱动内部名称和符号连接名称
#define DEVICE_NAME L"\\Device\\devDriverDemo"
#define LINK_NAME L"\\??\\slDriverDemo"
ULONG g_uRealServiceAddress; //真实函数地址
ULONG g_uPID; //把PID传进来typedef struct _SystemServiceDescriptorTable
{
PVOID ServiceTableBase;
PULONG ServiceCounterTableBase;
ULONG NumberOfService;
ULONG ParamTableBase;
}SystemServiceDescriptorTable,*PSystemServiceDescriptorTable;
// KeServiceDescriptorTable为ntoskrnl.exe导出
extern PSystemServiceDescriptorTable KeServiceDescriptorTable;// 定义NtOpenProcess
typedef NTSTATUS (__stdcall *NTOPENPROCESS)( OUT PHANDLE ProcessHandle,IN ACCESS_MASK AccessMask,IN POBJECT_ATTRIBUTES ObjectAttributes,IN PCLIENT_ID ClientId);NTOPENPROCESS RealNtOpenProcess; //原来的函数
// 自定义的NtOpenProcess函数
NTSTATUS __stdcall MyNtOpenProcess( OUT PHANDLE ProcessHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes, IN PCLIENT_ID ClientId )
{
NTSTATUS nt;
ULONG uPID;
nt=(NTSTATUS)(NTOPENPROCESS)RealNtOpenProcess(ProcessHandle,DesiredAccess,ObjectAttributes,ClientId);
if((ClientId!=NULL))
{uPID=(ULONG)ClientId->UniqueProcess;if (uPID==g_uPID){DbgPrint("PID:%u is hooked",uPID);ProcessHandle=NULL;nt=STATUS_ACCESS_DENIED;}
}
return nt;
}
// 驱动程序加载时调用DriverEntry例程
NTSTATUS DriverEntry(PDRIVER_OBJECT pDriverObj, PUNICODE_STRING pRegistryString)
{
初始化动作
NTSTATUS status;
UNICODE_STRING ustrDevName;
UNICODE_STRING ustrLinkName;
PDEVICE_OBJECT pDevObj;
g_uPID = 0;
status = STATUS_SUCCESS;
// 初始化各个派遣例程
pDriverObj->MajorFunction[IRP_MJ_CREATE] = DispatchCreateClose;
pDriverObj->MajorFunction[IRP_MJ_CLOSE] = DispatchCreateClose;
pDriverObj->MajorFunction[IRP_MJ_DEVICE_CONTROL]=DispatchIoctl;
pDriverObj->DriverUnload = DriverUnload ;
// 创建、初始化设备对象
// 设备名称
RtlInitUnicodeString(&ustrDevName, DEVICE_NAME);
// 创建设备对象
status = IoCreateDevice(pDriverObj, 0,&ustrDevName, FILE_DEVICE_UNKNOWN,0,FALSE,&pDevObj);
if(!NT_SUCCESS(status))
{return status;
}
// 创建符号连接名称
// 符号连接名称
RtlInitUnicodeString(&ustrLinkName, LINK_NAME);
// 创建关联
status = IoCreateSymbolicLink(&ustrLinkName, &ustrDevName);
if(!NT_SUCCESS(status))
{IoDeleteDevice(pDevObj); return status;
}
初始化完毕
Hook();
return STATUS_SUCCESS;
}
// I/O控制派遣例程
NTSTATUS DispatchIoctl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
{
///DispatchIoctl///
NTSTATUS IoCtlNtstus;
PIO_STACK_LOCATION pIRPStack;
ULONG uIoControlCode;
PVOID pIoBuffer;
ULONG uInSize;
ULONG uOutSize ;
//假设失败
IoCtlNtstus = STATUS_INVALID_DEVICE_REQUEST;
//IRP堆栈
pIRPStack = IoGetCurrentIrpStackLocation(pIrp);
//控制代码
uIoControlCode = pIRPStack->Parameters.DeviceIoControl.IoControlCode;
uInSize = pIRPStack->Parameters.DeviceIoControl.InputBufferLength;
uOutSize = pIRPStack->Parameters.DeviceIoControl.OutputBufferLength;
//
pIoBuffer= pIrp-> AssociatedIrp.SystemBuffer;switch(uIoControlCode)
{
case IO_PID_CTL:{DbgPrint("the PID is %s",pIoBuffer);g_uPID = atol(pIoBuffer);DbgPrint("the PID is %u",g_uPID);}break;
default:break;
}
//完成请求
if(IoCtlNtstus == STATUS_SUCCESS)pIrp->IoStatus.Information = uOutSize;
elsepIrp->IoStatus.Information = 0;// 完成请求pIrp->IoStatus.Status = IoCtlNtstus;
IoCompleteRequest(pIrp, IO_NO_INCREMENT);
return IoCtlNtstus;
}void DriverUnload(PDRIVER_OBJECT pDriverObj)
{UNICODE_STRING strLink;
/收尾工作 /
UnHook();
DbgPrint("unload");
// 删除符号连接名称
RtlInitUnicodeString(&strLink, LINK_NAME);
IoDeleteSymbolicLink(&strLink);
// 删除设备对象
IoDeleteDevice(pDriverObj->DeviceObject);
}
// 处理IRP_MJ_CREATE、IRP_MJ_CLOSE功能代码
NTSTATUS DispatchCreateClose(PDEVICE_OBJECT pDevObj, PIRP pIrp)
{
pIrp->IoStatus.Status = STATUS_SUCCESS;
// 完成此请求IoCompleteRequest(pIrp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
VOID Hook()
{
ULONG uAddr;
DbgPrint("hook");
//得到NtOpenProcess的地址
uAddr=(ULONG)KeServiceDescriptorTable->ServiceTableBase +0x7A*4;
g_uRealServiceAddress = *(ULONG*)uAddr;
//记录真实地址一会儿用
RealNtOpenProcess= (NTOPENPROCESS)g_uRealServiceAddress;
DbgPrint( "Address of Real NtOpenProcess: 0x%08X\n", g_uRealServiceAddress );
DbgPrint(" Address of MyNtOpenProcess: 0x%08X\n", MyNtOpenProcess );
//取消内存保护
__asm
{ cli mov eax, cr0 and eax, not 10000h mov cr0, eax
}
//NND....废了这么大劲其实就为了这一句
*((ULONG*)uAddr)=(ULONG)MyNtOpenProcess;
//回复内存
__asm
{ mov eax, cr0 or eax, 10000h mov cr0, eax sti
}
}
VOID UnHook()
{
ULONG uUnhookAddr;
//得到NtOpenProcess的地址
uUnhookAddr=(ULONG)KeServiceDescriptorTable->ServiceTableBase +0x7A*4;
//取消内存保护
__asm
{ cli mov eax, cr0 and eax, not 10000h mov cr0, eax
}
//NND....废了这么大劲其实就为了这一句
*((ULONG*)uUnhookAddr)=(ULONG)g_uRealServiceAddress;
//回复内存
__asm
{ mov eax, cr0 or eax, 10000h mov cr0, eax sti
}
}
=============================kernel mode,IoCTL.h ==========================
// IoCTL.h
#define IO_PID_CTL \
CTL_CODE(FILE_DEVICE_UNKNOWN, 0x810, METHOD_BUFFERED, FILE_ANY_ACCESS)
=============================user mode,Demo.cpp===========================
#include "stdafx.h"
#include <Windows.h>
#include <stdlib.h>
#include <winioctl.h>
#include "IoCTL.h" //和驱动里面的一样
#include "driver.h"
int main(int argc, CHAR* argv[])
{
printf("****************************************************\n");
printf(" 用户模式交互程序 \n\n");
printf(" By Returns \n");
printf("****************************************************\n\n");
DWORD dwPID = GetCurrentProcessId();printf("my pid is %u \n",dwPID);
char szAppPath[256];
char * p;GetFullPathName("FIRSTDRIVER.sys",256,szAppPath,&p);
CDriver DriverCon(szAppPath,"slDriverDemo");
if (DriverCon.StartDriver())
{printf("The Driver is started successfully \n");if (DriverCon.OpenDevice()){char strOut[256],strInput[4];ltoa(dwPID,strInput,10);printf("the handle is open...%s \n",strInput);if (DriverCon.IoControl(IO_PID_CTL,&strInput,4,&strOut,256)!=-1){printf("返回信息: %x \n",&strOut);}}
}
system("pause");return 0;
}
用户模式中的 Dirver.h 是CDriver类的封装 简化了SCM的操作...引自《windows程序设计》
效果是这样的.....返回的信息是有点bug的...懒得改了...要想传多个PID用数组就可以了...我也懒得改了..
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