1.环境
.Windows 10 20H2
2.工具
.Windows 2019、IDA Pro、WinDbg、VMware
3.目的
.在内核中实现对64位进程进行朴素地DLL注入
4.实验原理
.首先要说一下三环下实现远程线程DLL注入的工艺流程:
.0x1:通过OpenProcess获取目标进程句柄;
.0x2:通过VirtualAllocEx在目标进程内申请一块可读可写内存;
.0x3:通过WriteProcessMemory将loadlibraryA的参数,也就是待注入DLL的路径,写入刚申请的内存;
.0x4:通过CreateRemoteThread对目标进程创建远程线程,线程指向LoadLibraryA函数,参数便是刚写入申请内存的DLL路径;
.0x5:等待线程注入DLL完毕,释放申请的虚拟内存,关闭句柄.
.0x6:代码例子
#include
#include
using namespace std;
//目标进程ID，动态链接库的路径
BOOL inject(DWORD dwProcessId, const WCHAR * szFilePath) {
//进程全部的权限，句柄继承（通常为FALSE），目标进程ID
HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwProcessId);//返回的是进程句柄
//目标进程句柄，需要开辟的地址（NULL为操作系统分配），需要分配地址的大小，现在操作的类型，提供可读可写的属性
LPVOID lpAddress = VirtualAllocEx(hProcess, NULL, 0x100, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
//目标进程句柄，写到什么位置的地址，需要写的内容，需要写的长度，写入的宽度（用地址的形式传值）
SIZE_T dwRet = 0;
BOOL bRet = WriteProcessMemory(hProcess, lpAddress, szFilePath, ((wcslen(szFilePath) + 1) * 2), &dwRet);
//判断是否写入失败
if (!bRet) {
return FALSE;
}
//目标进程句柄，安全特性（通常为NULL），栈的尺寸（可以为NULL），该线程函数启动地址（强制转换类型为LPTHREAD_START_ROUTINE，可用LoadLibraryW加载），需要提供的参数（此处为需要写入的地址），标志（可以为NULL），线程ID（可以为NULL）
HANDLE hThread = CreateRemoteThread(hProcess, NULL, NULL, (LPTHREAD_START_ROUTINE)LoadLibraryW, lpAddress, NULL, NULL);
//-1代表一直等
WaitForSingleObject(hThread, -1);
VirtualFreeEx(hProcess, lpAddress, ((wcslen(szFilePath) + 1) * 2), MEM_RELEASE);
CloseHandle(hThread);
CloseHandle(hProcess);
}
int main()
{
getchar();
inject(16444, L"C:\\Users\\demo\\Desktop\\Dll1.dll");
system("pause");
return 0;
}
.在零环下,我们知道内核下是不能直接调用这些函数进行注入的,但是思路是不变的,只是调用的函数变了,有些3环下对应的内核函数在内核下是不被公开的,所以我思路中采用了很多特征码定位函数地址,接下来我们就说说详细思路:
.0x1:因为我们在内核下不能直接调用LoadLibraryA函数,但是这个函数又是在KERNEL32.DLL模块中的,所以第一步我们需要获取模块的函数地址,在内核中我们通过遍历EPROCESS--->Peb--->Ldr-->InLoadOrderModuleList--->InLoadOrderModuleList--->BaseDllName DllBase,如果BaseDllName等于KERNEL32.DLL的话就返回对应的DllBase,也就是KERNEL32.DLL模块在内存中的地址,实现代码如下:
//hPid传入一个64位进程,且进程中加载了KERNEL32.DLL
//unModule传入模块名,这里我们传KERNEL32.DLL
//pSize传入一个记录模块大小变量的指针
ULONG64 GetProcessModule(HANDLE hPid, UNICODE_STRING unModule,PULONG pSize)
{
PEPROCESS pEprocess = NULL;
NTSTATUS st = STATUS_SUCCESS;
PPEB pPeb = ExAllocatePool(NonPagedPool,sizeof(pEprocess));
PPEB_LDR_DATA pPebLdr = NULL;
PLDR_DATA_TABLE_ENTRY pFirLdrForPebLdr = NULL;
PLDR_DATA_TABLE_ENTRY pDataLdr = NULL;
PLDR_DATA_TABLE_ENTRY pDataLdrTmp = NULL;
KAPC_STATE kApc;
ULONG64 uRetAddr = 0;
st = PsLookupProcessByProcessId(hPid, &pEprocess);
if (!NT_SUCCESS(st))
{
ObDereferenceObject(pEprocess);
return;
}
pPeb = PsGetProcessPeb(pEprocess);
KeStackAttachProcess(pEprocess, &kApc);
if (pPeb)
{
if (MmIsAddressValid(&(pPeb->Ldr)))
{
pPebLdr = pPeb->Ldr;
pFirLdrForPebLdr = pPebLdr->InLoadOrderModuleList.Blink;
pDataLdr = pFirLdrForPebLdr->InLoadOrderLinks.Flink;
pDataLdrTmp = pDataLdr;
do
{
DbgPrintEx(77, 0, "[db]%wZ,地址:%llx\n", pDataLdrTmp->BaseDllName, pDataLdrTmp->DllBase);
if (RtlEqualUnicodeString(&(pDataLdrTmp->BaseDllName), &unModule,FALSE))
{
*pSize = pDataLdrTmp->SizeOfImage;
uRetAddr = (ULONG64)pDataLdrTmp->DllBase;
break;
}
pDataLdrTmp = pDataLdrTmp->InLoadOrderLinks.Flink;
} while (pDataLdrTmp!= pDataLdr);
}
}
KeUnstackDetachProcess(&kApc);
return uRetAddr;
}
.0x2:既然我们拿到了KERNEL32.DLL的模块地址,那么我们接下来就是需要再去拿一下LoadLibraryA的函数地址,这里我们采用特征码搜索,我们把KERNEL32.DLL拖入IDA Pro解析完符号后定位到LoadLibraryA函数或者附近看看有没有特征性比较强的字节段,有点话就可以直接使用特征码搜索便可以找到LoadLibraryA的函数地址了,以下是IDA Pro解析LoadLibraryA函数字节段的内容:
.text:0000000180020C32 loc_180020C32:
.text:0000000180020C32 85 C0 test eax, eax
.text:0000000180020C34 0F 95 C1 setnz cl
.text:0000000180020C37 33 C0 xor eax, eax
.text:0000000180020C39 41 89 09 mov [r9], ecx
.text:0000000180020C3C C3 retn
.text:0000000180020C3C
.text:0000000180020C3C sub_180020C20 endp
.text:0000000180020C3C
.text:0000000180020C3C ;
.text:0000000180020C3D CC CC CC CC CC CC CC CC CC CC+db 13h dup(0CCh)
.text:0000000180020C50 ; Exported entry 969. LoadLibraryA
.text:0000000180020C50
.text:0000000180020C50 ; =============== S U B R O U T I N E ===================
.text:0000000180020C50
.text:0000000180020C50 ; Attributes: thunk
.text:0000000180020C50
.text:0000000180020C50 ; HMODULE __stdcall LoadLibraryA(LPCSTR lpLibFileName)
.text:0000000180020C50 public LoadLibraryA
.text:0000000180020C50 LoadLibraryA proc near
.text:0000000180020C50
.text:0000000180020C50
.text:0000000180020C50 48 FF 25 19 19 06 00 jmp cs:LoadLibraryA_0
.我们可以看到在0000000180020C32处有一段固定的字节码,而0000000180020C50便是我们LoadLibraryA函数的地址,所以我们只要找到0000000180020C32处的字节码位置便可轻易地通过偏移+0x1e得到LoadLibraryA函数的地址,此处用到了特征码搜索,使用方法我以前的帖子说过,这里就不再赘述,代码如下:
PVOID SearchSpecialCode(PVOID pSearchBeginAddr, ULONG ulSearchLength, PUCHAR pSpecialCode, ULONG ulSpecialCodeLength)
{
PVOID pDestAddr = NULL;
PUCHAR pBeginAddr = (PUCHAR)pSearchBeginAddr;
PUCHAR pEndAddr = pBeginAddr + ulSearchLength;
PUCHAR i = NULL;
ULONG j = 0;
for (i = pBeginAddr; i = ulSpecialCodeLength)
{
pDestAddr = (PVOID)i;
break;
}
}
return pDestAddr;
}
.LoadLibraryA函数地址查找代码如下:
unsigned char loadliboffsetcode[] =
{
0x85, 0xC0, 0x0F, 0x95, 0xC1, 0x33, 0xC0, 0x41, 0x89, 0x09,
0xC3
};
pLoadLibAddr = SearchSpecialCode(pKernel32ModulAddr, uKernel32ModulSize, loadliboffsetcode, 11);
pLoadLibAddr = (PUCHAR)pLoadLibAddr + 0x1e;
.0x3:现在我们已经拿到LoadLibraryA函数地址了,接下来就是在目标进程内申请一段可读可写的虚拟内存了,内核中是由对应函数可以实现申请虚拟内存的
.申请函数是:
NTSYSAPI
NTSTATUS
NTAPI
ZwAllocateVirtualMemory (
__in HANDLE ProcessHandle,
__inout PVOID *BaseAddress,
__in ULONG_PTR ZeroBits,
__inout PSIZE_T RegionSize,
__in ULONG AllocationType,
__in ULONG Protect
);
.释放的函数:
NTSYSAPI
NTSTATUS
NTAPI
ZwFreeVirtualMemory (
__in HANDLE ProcessHandle,
__inout PVOID *BaseAddress,
__inout PSIZE_T RegionSize,
__in ULONG FreeType
);
.在申请时,第一个参数填入需要申请的目标进程句柄,这里可以先通过PsLookupProcessByProcessId函数获取进程EPROCESS结构,再通过ObOpenObjectByPointer获取进程句柄,第二个参数填入申请得到的内存地址的二级指针,第三个参数NULL,第四个参数填入你要申请内存的大小的指针,第五个参数填入MEM_COMMIT（提交内存）,第六个参数填入你想要申请的内存保护类型,填入PAGE_READWRITE就行,代码如下:
st = ZwAllocateVirtualMemory(hProcess,
&pVirsualAddr,
0,
®ionSize,
MEM_COMMIT,
PAGE_READWRITE);
.0x4:现在已经申请得到内存,那我们就需要把我们的参数写入刚申请的内存区域就行,使用KeStackAttachProcess 附加上目标进程后使用 RtlCopyMemory把DLL路径拷贝进去就行了,代码如下:
KeStackAttachProcess(pTargetProcess, &kapcstate);
RtlZeroMemory(pVirsualAddr, regionSize);
RtlCopyMemory(pVirsualAddr, path,strlen(path));
.0x5:这时候我们还差一步,就是创建线程,但是内核中没有CreateRemoteThread函数,所以我们需要用一个系统函数NtCreateThreadEx函数,但是这个函数是未公开的,所以我们需要通过特征码去定位这个函数地址,和第二步的方法差不多,这里我直接给出NtCreateThreadEx函数原型和查找函数地址代码:
typedef NTSTATUS (*ZwCreateThreadEx)(
PHANDLE ThreadHandle,
ACCESS_MASK DesiredAccess,
POBJECT_ATTRIBUTES ObjectAttributes,
HANDLE ProcessHandle,
PVOID StartRoutine,
PVOID StartContext,
ULONG CreateThreadFlags,
SIZE_T ZeroBits,
SIZE_T StackSize,
SIZE_T MaximumStackSize,
PPS_ATTRIBUTE_LIST AttributeList
);
unsigned char ZwCreateThreadCode[] =
{
0x40,0x55,0x53,0x56,0x57,0x41,0x54,0x41,0x55,0x41,0x56,0x41,0x57,
0x48,0x81,0xec,0x28,0x03,0x00,0x00
};
.这里有个注意的是这个函数地址是在ntoskrnl.exe中,所以我们这里需要通过遍历系统模块列表对比去拿到该模块的地址和大小,代码如下:
ULONG_PTR GetKernelModuleBase(PUCHAR moduleName, PULONG pModuleSize) {
RTL_PROCESS_MODULES SysModules = { 0 };
PRTL_PROCESS_MODULES pModules = &SysModules;
ULONG SystemInformationLength = 0;
//查询系统中所有内核模块，底层也是遍历链表
NTSTATUS status = ZwQuerySystemInformation(SystemModuleInformation, pModules, sizeof(RTL_PROCESS_MODULES), &SystemInformationLength);
if (status == STATUS_INFO_LENGTH_MISMATCH) {
pModules = ExAllocatePool(NonPagedPool, SystemInformationLength + sizeof(RTL_PROCESS_MODULES));
RtlZeroMemory(pModules, SystemInformationLength + sizeof(RTL_PROCESS_MODULES));
status = ZwQuerySystemInformation(SystemModuleInformation, pModules, SystemInformationLength + sizeof(RTL_PROCESS_MODULES), &SystemInformationLength);
if (!NT_SUCCESS(status)) {
ExFreePool(pModules);
return 0;
}
}
if (!strcmp("ntoskrnl.exe", moduleName) || !strcmp("ntkrnlpa.exe", moduleName)) {
*pModuleSize = pModules->Modules[0].ImageSize;
ULONG_PTR ret = pModules->Modules[0].ImageBase;
if (SystemInformationLength) {
ExFreePool(pModules);
}
return ret;
}
for (ULONG i = 0; i NumberOfModules; i++) {
if (strstr(pModules->Modules.FullPathName, moduleName)) {
*pModuleSize = pModules->Modules.ImageSize;
ULONG_PTR ret = pModules->Modules.ImageBase;
if (SystemInformationLength) {
ExFreePool(pModules);
}
//返回模块地址
return ret;
}
}
if (SystemInformationLength) {
ExFreePool(pModules);
}
return 0;
}
pZwCreatThraedFuncAddr = SearchSpecialCode(pNtoskrnlModulAddr, uNtoskrnlModulSize, ZwCreateThreadCode, 17);
if (pZwCreatThraedFuncAddr)
{
DbgPrintEx(77, 0, "[db]pZwCreatThraedFuncAddr:%llx\n", pZwCreatThraedFuncAddr);
}
.随后我们便可以调用这个函数去创建线程,代码如下:
mycreate = pZwCreatThraedFuncAddr;
st = mycreate(&hThread, THREAD_ALL_ACCESS, NULL, hProcess,pLoadLibAddr, pVirsualAddr,0x2, 0, 0, 0, NULL);
DbgPrintEx(77, 0, "[db]创建线程状态st:%d\n", st);
.函数参数的意义如下:
[ol]
[/ol]
.其中CreateFlag参数填2的原因是想让其创建后挂起等待我们使用NtResumeThread去恢复线程执行,其NtResumeThread也是未公开的,我们也需要特征码去搜索,当然如果你想线程创建后就执行的话CreateFlag填0就行了,不需要使用NtResumeThread了,NtResumeThread的函数原型以及函数地址搜索代码如下:
typedef NTSTATUS
(*NtResumeThread)(
__in HANDLE ThreadHandle,
__out_opt PULONG PreviousSuspendCount
);
pNtResumeThreadFuncAddr = SearchSpecialCode(pNtoskrnlModulAddr, uNtoskrnlModulSize, NtResumeThreadcode, 14);
if (pNtResumeThreadFuncAddr)
{
DbgPrintEx(77, 0, "[db]pNtResumeThreadFuncAddr:%llx\n", pNtResumeThreadFuncAddr);
}
0x6:完整代码:
//tool.h
#pragma once
#include
#include
#include
typedef struct _INITIAL_TEB {
struct {
PVOID OldStackBase;
PVOID OldStackLimit;
} OldInitialTeb;
PVOID StackBase;
PVOID StackLimit;
PVOID StackAllocationBase;
} INITIAL_TEB, * PINITIAL_TEB;
typedef struct _RTL_PROCESS_MODULE_INFORMATION {
HANDLE Section; // Not filled in
PVOID MappedBase;
PVOID ImageBase;
ULONG ImageSize;
ULONG Flags;
USHORT LoadOrderIndex;
USHORT InitOrderIndex;
USHORT LoadCount;
USHORT OffsetToFileName;
UCHAR FullPathName[256];
} RTL_PROCESS_MODULE_INFORMATION, * PRTL_PROCESS_MODULE_INFORMATION;
typedef struct _RTL_PROCESS_MODULES {
ULONG NumberOfModules;
RTL_PROCESS_MODULE_INFORMATION Modules[1];
} RTL_PROCESS_MODULES, * PRTL_PROCESS_MODULES;
//0x58 bytes (sizeof)
typedef struct _PEB_LDR_DATA
{
ULONG Length; //0x0
UCHAR Initialized; //0x4
PVOID SsHandle; //0x8
LIST_ENTRY InLoadOrderModuleList; //0x10
LIST_ENTRY InMemoryOrderModuleList; //0x20
LIST_ENTRY InInitializationOrderModuleList; //0x30
PVOID EntryInProgress; //0x40
UCHAR ShutdownInProgress; //0x48
PVOID ShutdownThreadId; //0x50
}PEB_LDR_DATA, * PPEB_LDR_DATA;
//0x7c8 bytes (sizeof)
typedef struct _PEB
{
UCHAR InheritedAddressSpace; //0x0
UCHAR ReadImageFileExecOptions; //0x1
UCHAR BeingDebugged; //0x2
union
{
UCHAR BitField; //0x3
struct
{
UCHAR ImageUsesLargePages : 1; //0x3
UCHAR IsProtectedProcess : 1; //0x3
UCHAR IsImageDynamicallyRelocated : 1; //0x3
UCHAR SkipPatchingUser32Forwarders : 1; //0x3
UCHAR IsPackagedProcess : 1; //0x3
UCHAR IsAppContainer : 1; //0x3
UCHAR IsProtectedProcessLight : 1; //0x3
UCHAR IsLongPathAwareProcess : 1; //0x3
};
};
UCHAR Padding0[4]; //0x4
PVOID Mutant; //0x8
PVOID ImageBaseAddress; //0x10
PEB_LDR_DATA* Ldr; //0x18 //0xc //0x18
}PEB,*PPEB;
//0x120 bytes (sizeof)
typedef struct _LDR_DATA_TABLE_ENTRY
{
LIST_ENTRY InLoadOrderLinks; //0x0
LIST_ENTRY InMemoryOrderLinks; //0x10
LIST_ENTRY InInitializationOrderLinks; //0x20
PVOID DllBase; //0x30
PVOID EntryPoint; //0x38
ULONG SizeOfImage; //0x40
UNICODE_STRING FullDllName; //0x48
UNICODE_STRING BaseDllName; //0x58 //0x11c
}LDR_DATA_TABLE_ENTRY,*PLDR_DATA_TABLE_ENTRY;
typedef struct _PS_ATTRIBUTE {
ULONG_PTR Attribute;
SIZE_T Size;
union {
ULONG_PTR Value;
PVOID ValuePtr;
} u1;
PSIZE_T ReturnLength;
} PS_ATTRIBUTE, * PPS_ATTRIBUTE;
typedef struct _PS_ATTRIBUTE_LIST {
SIZE_T TotalLength;
PS_ATTRIBUTE Attributes[1];
} PS_ATTRIBUTE_LIST, * PPS_ATTRIBUTE_LIST;
PVOID SearchSpecialCode(PVOID pSearchBeginAddr, ULONG ulSearchLength, PUCHAR pSpecialCode, ULONG ulSpecialCodeLength);
NTSYSAPI
NTSTATUS
NTAPI ZwQuerySystemInformation(
IN ULONG SystemInformationClass,
IN OUT PVOID SystemInformation,
IN ULONG SystemInformationLength,
OUT PULONG ReturnLength
);
typedef NTSTATUS (*ZwCreateThreadEx)(
PHANDLE ThreadHandle,
ACCESS_MASK DesiredAccess,
POBJECT_ATTRIBUTES ObjectAttributes,
HANDLE ProcessHandle,
PVOID StartRoutine,
PVOID StartContext,
ULONG CreateThreadFlags,
SIZE_T ZeroBits,
SIZE_T StackSize,
SIZE_T MaximumStackSize,
PPS_ATTRIBUTE_LIST AttributeList
);
typedef NTSTATUS
(*NtResumeThread)(
__in HANDLE ThreadHandle,
__out_opt PULONG PreviousSuspendCount
);
EXTERN_C
PPEB
PsGetProcessPeb(
__in PEPROCESS Process
);
typedef enum _SYSTEM_INFORMATION_CLASS {
SystemBasicInformation,
SystemProcessorInformation, // obsolete...delete
SystemPerformanceInformation,
SystemTimeOfDayInformation,
SystemPathInformation,
SystemProcessInformation,
SystemCallCountInformation,
SystemDeviceInformation,
SystemProcessorPerformanceInformation,
SystemFlagsInformation,
SystemCallTimeInformation,
SystemModuleInformation,
SystemLocksInformation,
SystemStackTraceInformation,
SystemPagedPoolInformation,
SystemNonPagedPoolInformation,
SystemHandleInformation,
SystemObjectInformation,
SystemPageFileInformation,
SystemVdmInstemulInformation,
SystemVdmBopInformation,
SystemFileCacheInformation,
SystemPoolTagInformation,
SystemInterruptInformation,
SystemDpcBehaviorInformation,
SystemFullMemoryInformation,
SystemLoadGdiDriverInformation,
SystemUnloadGdiDriverInformation,
SystemTimeAdjustmentInformation,
SystemSummaryMemoryInformation,
SystemMirrorMemoryInformation,
SystemPerformanceTraceInformation,
SystemObsolete0,
SystemExceptionInformation,
SystemCrashDumpStateInformation,
SystemKernelDebuggerInformation,
SystemContextSwitchInformation,
SystemRegistryQuotaInformation,
SystemExtendServiceTableInformation,
SystemPrioritySeperation,
SystemVerifierAddDriverInformation,
SystemVerifierRemoveDriverInformation,
SystemProcessorIdleInformation,
SystemLegacyDriverInformation,
SystemCurrentTimeZoneInformation,
SystemLookasideInformation,
SystemTimeSlipNotification,
SystemSessionCreate,
SystemSessionDetach,
SystemSessionInformation,
SystemRangeStartInformation,
SystemVerifierInformation,
SystemVerifierThunkExtend,
SystemSessionProcessInformation,
SystemLoadGdiDriverInSystemSpace,
SystemNumaProcessorMap,
SystemPrefetcherInformation,
SystemExtendedProcessInformation,
SystemRecommendedSharedDataAlignment,
SystemComPlusPackage,
SystemNumaAvailableMemory,
SystemProcessorPowerInformation,
SystemEmulationBasicInformation,
SystemEmulationProcessorInformation,
SystemExtendedHandleInformation,
SystemLostDelayedWriteInformation,
SystemBigPoolInformation,
SystemSessionPoolTagInformation,
SystemSessionMappedViewInformation,
SystemHotpatchInformation,
SystemObjectSecurityMode,
SystemWatchdogTimerHandler,
SystemWatchdogTimerInformation,
SystemLogicalProcessorInformation,
SystemWow64SharedInformation,
SystemRegisterFirmwareTableInformationHandler,
SystemFirmwareTableInformation,
SystemModuleInformationEx,
SystemVerifierTriageInformation,
SystemSuperfetchInformation,
SystemMemoryListInformation,
SystemFileCacheInformationEx,
MaxSystemInfoClass // MaxSystemInfoClass should always be the last enum
} SYSTEM_INFORMATION_CLASS;
BOOLEAN MDLWriteMemory(PVOID pBaseAddress, PVOID pWriteData, SIZE_T writeDataSize);
ULONG_PTR GetKernelModuleBase(PUCHAR moduleName, PULONG pModuleSize);
ULONG64 GetProcessModule(HANDLE hPid,UNICODE_STRING unModule, PULONG pSize);
NTSTATUS InsertDll(HANDLE hPid, char* path);
//tool.c
#include "tool.h"
BOOLEAN MDLWriteMemory(PVOID pBaseAddress, PVOID pWriteData, SIZE_T writeDataSize)
{
PMDL pMdl = NULL;
PVOID pNewAddress = NULL;
// 创建 MDL
pMdl = MmCreateMdl(NULL, pBaseAddress, writeDataSize);
if (NULL == pMdl)
{
return FALSE;
}
// 更新 MDL 对物理内存的描述
MmBuildMdlForNonPagedPool(pMdl);
// 映射到虚拟内存中
pNewAddress = MmMapLockedPages(pMdl, KernelMode);
if (NULL == pNewAddress)
{
IoFreeMdl(pMdl);
}
// 写入数据
RtlCopyMemory(pNewAddress, pWriteData, writeDataSize);
// 释放
MmUnmapLockedPages(pNewAddress, pMdl);
IoFreeMdl(pMdl);
return TRUE;
}
ULONG_PTR GetKernelModuleBase(PUCHAR moduleName, PULONG pModuleSize) {
RTL_PROCESS_MODULES SysModules = { 0 };
PRTL_PROCESS_MODULES pModules = &SysModules;
ULONG SystemInformationLength = 0;
//查询系统中所有内核模块，底层也是遍历链表
NTSTATUS status = ZwQuerySystemInformation(SystemModuleInformation, pModules, sizeof(RTL_PROCESS_MODULES), &SystemInformationLength);
if (status == STATUS_INFO_LENGTH_MISMATCH) {
pModules = ExAllocatePool(NonPagedPool, SystemInformationLength + sizeof(RTL_PROCESS_MODULES));
RtlZeroMemory(pModules, SystemInformationLength + sizeof(RTL_PROCESS_MODULES));
status = ZwQuerySystemInformation(SystemModuleInformation, pModules, SystemInformationLength + sizeof(RTL_PROCESS_MODULES), &SystemInformationLength);
if (!NT_SUCCESS(status)) {
ExFreePool(pModules);
return 0;
}
}
if (!strcmp("ntoskrnl.exe", moduleName) || !strcmp("ntkrnlpa.exe", moduleName)) {
*pModuleSize = pModules->Modules[0].ImageSize;
ULONG_PTR ret = pModules->Modules[0].ImageBase;
if (SystemInformationLength) {
ExFreePool(pModules);
}
return ret;
}
for (ULONG i = 0; i NumberOfModules; i++) {
if (strstr(pModules->Modules.FullPathName, moduleName)) {
*pModuleSize = pModules->Modules.ImageSize;
ULONG_PTR ret = pModules->Modules.ImageBase;
if (SystemInformationLength) {
ExFreePool(pModules);
}
//返回模块地址
return ret;
}
}
if (SystemInformationLength) {
ExFreePool(pModules);
}
return 0;
}
PVOID SearchSpecialCode(PVOID pSearchBeginAddr, ULONG ulSearchLength, PUCHAR pSpecialCode, ULONG ulSpecialCodeLength)
{
PVOID pDestAddr = NULL;
PUCHAR pBeginAddr = (PUCHAR)pSearchBeginAddr;
PUCHAR pEndAddr = pBeginAddr + ulSearchLength;
PUCHAR i = NULL;
ULONG j = 0;
for (i = pBeginAddr; i = ulSpecialCodeLength)
{
pDestAddr = (PVOID)i;
break;
}
}
return pDestAddr;
}
ULONG64 GetProcessModule(HANDLE hPid, UNICODE_STRING unModule,PULONG pSize)
{
PEPROCESS pEprocess = NULL;
NTSTATUS st = STATUS_SUCCESS;
PPEB pPeb = ExAllocatePool(NonPagedPool,sizeof(pEprocess));
PPEB_LDR_DATA pPebLdr = NULL;
PLDR_DATA_TABLE_ENTRY pFirLdrForPebLdr = NULL;
PLDR_DATA_TABLE_ENTRY pDataLdr = NULL;
PLDR_DATA_TABLE_ENTRY pDataLdrTmp = NULL;
KAPC_STATE kApc;
ULONG64 uRetAddr = 0;
st = PsLookupProcessByProcessId(hPid, &pEprocess);
if (!NT_SUCCESS(st))
{
ObDereferenceObject(pEprocess);
return;
}
pPeb = PsGetProcessPeb(pEprocess);
KeStackAttachProcess(pEprocess, &kApc);
if (pPeb)
{
if (MmIsAddressValid(&(pPeb->Ldr)))
{
pPebLdr = pPeb->Ldr;
pFirLdrForPebLdr = pPebLdr->InLoadOrderModuleList.Blink;
pDataLdr = pFirLdrForPebLdr->InLoadOrderLinks.Flink;
pDataLdrTmp = pDataLdr;
do
{
DbgPrintEx(77, 0, "[db]%wZ,地址:%llx\n", pDataLdrTmp->BaseDllName, pDataLdrTmp->DllBase);
if (RtlEqualUnicodeString(&(pDataLdrTmp->BaseDllName), &unModule,FALSE))
{
*pSize = pDataLdrTmp->SizeOfImage;
uRetAddr = (ULONG64)pDataLdrTmp->DllBase;
break;
}
pDataLdrTmp = pDataLdrTmp->InLoadOrderLinks.Flink;
} while (pDataLdrTmp!= pDataLdr);
}
}
KeUnstackDetachProcess(&kApc);
return uRetAddr;
}
NTSTATUS InsertDll(HANDLE hPid, char* path)
{
PEPROCESS pTargetProcess = NULL;
NTSTATUS st = STATUS_SUCCESS;
KAPC_STATE kapcstate;
HANDLE hProcess = 0;
HANDLE hThread = 0;
PVOID pNtoskrnlModulAddr = NULL;
ULONG uNtoskrnlModulSize = 0;
PVOID pKernel32ModulAddr = NULL;
ULONG uKernel32ModulSize = 0;
PVOID pZwCreatThraedFuncAddr = NULL;
PVOID pNtResumeThreadFuncAddr = NULL;
PVOID pLoadLibAddr = NULL;
PVOID pVirsualAddr = NULL;
SIZE_T regionSize = 0x1000;
ULONG PreviousSuspendCount = 0;
ZwCreateThreadEx mycreate = NULL;
NtResumeThread myresume = NULL;
UNICODE_STRING unKernel32Name = RTL_CONSTANT_STRING(L"KERNEL32.DLL");
st = PsLookupProcessByProcessId(hPid, &pTargetProcess);
if (!NT_SUCCESS(st))
{
return st;
}
ObOpenObjectByPointer(pTargetProcess,
OBJ_KERNEL_HANDLE,
NULL,
PROCESS_ALL_ACCESS,
*PsProcessType,
KernelMode,
&hProcess);
if (!NT_SUCCESS(st))
{
return st;
}
KeStackAttachProcess(pTargetProcess, &kapcstate);
//NtCreateThread特征码
unsigned char ZwCreateThreadCode[] =
{
0x40,0x55,0x53,0x56,0x57,0x41,0x54,0x41,0x55,0x41,0x56,0x41,0x57,
0x48,0x81,0xec,0x28,0x03,0x00,0x00
};
//ResumeThreadcode特征码
unsigned char NtResumeThreadcode[] =
{
0x40,0x53,0x48,0x83,0xec,0x50,0x48,
0x8b,0xda,0x4c,0x8b,0xd1,0xc7,0x44
};
//LoadLibrary特征码偏移-0x1e
unsigned char loadliboffsetcode[] =
{
0x85, 0xC0, 0x0F, 0x95, 0xC1, 0x33, 0xC0, 0x41, 0x89, 0x09,
0xC3
};
//内核Ntoskrnl地址
pNtoskrnlModulAddr = GetKernelModuleBase("ntoskrnl.exe", &uNtoskrnlModulSize);
if (pNtoskrnlModulAddr)
{
DbgPrintEx(77, 0, "[db]pKernelModulAddr:%llx\n", pNtoskrnlModulAddr);
}
//kernel32.dll地址，为了拿LoadLibrary函数地址
pKernel32ModulAddr = GetProcessModule(hPid, unKernel32Name, &uKernel32ModulSize);
if (pKernel32ModulAddr)
{
DbgPrintEx(77, 0, "[db]pKernel32ModulAddr:%llx\n", pKernel32ModulAddr);
}
//NtCreateThreadEx函数地址
pZwCreatThraedFuncAddr = SearchSpecialCode(pNtoskrnlModulAddr, uNtoskrnlModulSize, ZwCreateThreadCode, 17);
if (pZwCreatThraedFuncAddr)
{
DbgPrintEx(77, 0, "[db]pZwCreatThraedFuncAddr:%llx\n", pZwCreatThraedFuncAddr);
}
//NtResumeThread函数地址
pNtResumeThreadFuncAddr = SearchSpecialCode(pNtoskrnlModulAddr, uNtoskrnlModulSize, NtResumeThreadcode, 14);
if (pNtResumeThreadFuncAddr)
{
DbgPrintEx(77, 0, "[db]pNtResumeThreadFuncAddr:%llx\n", pNtResumeThreadFuncAddr);
}
//LoadLibrary函数地址
pLoadLibAddr = SearchSpecialCode(pKernel32ModulAddr, uKernel32ModulSize, loadliboffsetcode, 11);
pLoadLibAddr = (PUCHAR)pLoadLibAddr + 0x1e;
if (pLoadLibAddr)
{
DbgPrintEx(77, 0, "[db]pLoadLibAddr:%llx\n", pLoadLibAddr);
}
// 使用ZwAllocateVirtualMemory函数在内核地址空间中分配虚拟内存
st = ZwAllocateVirtualMemory(hProcess,
&pVirsualAddr,
0,
®ionSize,
MEM_COMMIT,
PAGE_READWRITE);
if (!NT_SUCCESS(st)) {
DbgPrintEx(77, 0, "[db]内存申请失败: st:%d\n", st);
return st;
}
DbgPrintEx(77, 0, "[db]内存申请成功,st:%d\n", st);
DbgPrintEx(77, 0, "[db]申请到的地址为:%llx\n", pVirsualAddr);
RtlZeroMemory(pVirsualAddr, regionSize);
RtlCopyMemory(pVirsualAddr, path,strlen(path));
//NtCreateThreadEx函数
mycreate = pZwCreatThraedFuncAddr;
//NtResumeThread函数
myresume = pNtResumeThreadFuncAddr;
//创建线程为挂起
st = mycreate(&hThread, THREAD_ALL_ACCESS, NULL, hProcess,pLoadLibAddr, pVirsualAddr,0x2, 0, 0, 0, NULL);
DbgPrintEx(77, 0, "[db]创建线程状态st:%d\n", st);
if (NT_SUCCESS(st))
{
//让线程执行不挂起
st = myresume(hThread, &PreviousSuspendCount);
}
DbgPrintEx(77, 0, "[db]线程调用状态:st:%d\n", st);
st = ZwWaitForSingleObject(hThread, FALSE, NULL);
if (!NT_SUCCESS(st))
{
DbgPrintEx(77, 0, "WaitForSingleObject st = %d\n", st);
}
// 使用ZwFreeVirtualMemory函数释放虚拟内存
st = ZwFreeVirtualMemory(hProcess,&pVirsualAddr,®ionSize,MEM_RELEASE);
if (!NT_SUCCESS(st)) {
DbgPrintEx(77, 0, "ZwFreeVirtualMemory st = %d\n", st);
}
KeUnstackDetachProcess(&kapcstate);
}
//main.c
#include "tool.h"
VOID UnloadDriver(PDRIVER_OBJECT pDriver)
{
}
NTSTATUS DriverEntry(PDRIVER_OBJECT pDriver, PUNICODE_STRING pRegPath)
{
//把C:\\demo.dll注入到进程id为2454的进程中
InsertDll(2464, "C:\\demo.dll");
pDriver->DriverUnload = UnloadDriver;
return STATUS_SUCCESS;
}
.DLL代码:
// dllmain.cpp : 定义 DLL 应用程序的入口点。
#include "pch.h"
BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
{
MessageBoxA(NULL, NULL, NULL, NULL);
break;
}
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
return TRUE;
}
}
0x5:注入效果
image-20230418220042137.png (33.8 KB, 下载次数: 0)
下载附件
2023-4-18 22:03 上传
0x6:总结
.首先，这里注入的是64位的进程，32位的话获取模块列表需要换一下对应的32位结构，其次，像标题那样，这是一个非常朴素的驱动注入DLL，需要让它变强大就去发挥你们自己的思路
