本章将探索内核级DLL模块注入实现原理,DLL模块注入在应用层中通常会使用CreateRemoteThread直接开启远程线程执行即可,驱动级别的注入有多种实现原理,而其中最简单的一种实现方式则是通过劫持EIP的方式实现,其实现原理可总结为,挂起目标进程,停止目标进程EIP的变换,在目标进程开启空间,并把相关的指令机器码和数据拷贝到里面去,然后直接修改目标进程EIP使其强行跳转到我们拷贝进去的相关机器码位置,执行相关代码后,然后再次跳转回来执行原始指令集。
在内核模式中实现这一过程大体可分为如下步骤;
- 1.通过PsLookupProcessByProcessId将进程PID转为EProcess结构
- 2.通过KeStackAttachProcess附加到目标进程
- 3.通过GetUserModule得到当前进程中Ntdll.dll模块的基址
- 4.通过GetModuleExport得到Ntdll.dll模块内LdrLoadDll函数基址
- 5.通过ZwGetNextThread得到当前线程句柄
- 6.通过PsSuspendThread暂停当前线程运行
- 7.此时通过GetWow64Code生成特定的加载代码,并放入ZwAllocateVirtualMemory生成的内存中
- 8.修改当前EIP的值指向newAddress内存地址
- 7.通过PsResumeThread恢复线程执行,让其执行我们的ShellCode代码
- 8.最后调用KeUnstackDetachProcess脱离目标进程,并释放句柄
首先需要定义一个标准头文件,并将其命名为lyshark.h其定义部分如下所示,此部分内容摘录于微软官方文档,如果需要了解结构体内的含义,请去自行查阅微软官方文档;- // 署名权
- // right to sign one's name on a piece of work
- // PowerBy: LyShark
- // Email: me@lyshark.com
- #include <ntifs.h>
- #include <windef.h>
- #include <intrin.h>
- #include <ntimage.h>
- #include <ntstrsafe.h>
- // 线程结构体偏移值
- #define MAXCOUNTS 0x200
- #define INITIALSTACKOFFSET 0x28
- #define WOW64CONTEXTOFFSET 0x1488
- #define WOW64_SIZE_OF_80387_REGISTERS 80
- #define WOW64_MAXIMUM_SUPPORTED_EXTENSION 512
- // 导出函数
- NTKERNELAPI PPEB NTAPI PsGetProcessPeb(IN PEPROCESS Process);
- // 定义自定义函数指针
- typedef PVOID(NTAPI* PPsGetThreadTeb)(IN PETHREAD Thread);
- typedef PVOID(NTAPI* PPsGetProcessWow64Process)(_In_ PEPROCESS Process);
- typedef NTSTATUS(NTAPI* PPsResumeThread)(PETHREAD Thread, OUT PULONG PreviousCount);
- typedef NTSTATUS(NTAPI* PPsSuspendThread)(IN PETHREAD Thread, OUT PULONG PreviousSuspendCount OPTIONAL);
- typedef NTSTATUS(NTAPI* PZwGetNextThread)(_In_ HANDLE ProcessHandle, _In_ HANDLE ThreadHandle, _In_ ACCESS_MASK DesiredAccess, _In_ ULONG HandleAttributes, _In_ ULONG Flags, _Out_ PHANDLE NewThreadHandle);
- // 存放全局函数指针的变量
- PPsGetThreadTeb g_PsGetThreadTeb = NULL;
- PPsResumeThread g_PsResumeThread = NULL;
- PPsSuspendThread g_PsSuspendThread = NULL;
- PZwGetNextThread g_ZwGetNextThread = NULL;
- PPsGetProcessWow64Process g_PsGetProcessWow64Process = NULL;
- // 定义微软结构体
- typedef struct _PEB_LDR_DATA32
- {
- ULONG Length;
- UCHAR Initialized;
- ULONG SsHandle;
- LIST_ENTRY32 InLoadOrderModuleList;
- LIST_ENTRY32 InMemoryOrderModuleList;
- LIST_ENTRY32 InInitializationOrderModuleList;
- } PEB_LDR_DATA32, *PPEB_LDR_DATA32;
- typedef struct _PEB_LDR_DATA
- {
- ULONG Length;
- UCHAR Initialized;
- PVOID SsHandle;
- LIST_ENTRY InLoadOrderModuleList;
- LIST_ENTRY InMemoryOrderModuleList;
- LIST_ENTRY InInitializationOrderModuleList;
- } PEB_LDR_DATA, *PPEB_LDR_DATA;
- typedef struct _LDR_DATA_TABLE_ENTRY32
- {
- LIST_ENTRY32 InLoadOrderLinks;
- LIST_ENTRY32 InMemoryOrderLinks;
- LIST_ENTRY32 InInitializationOrderLinks;
- ULONG DllBase;
- ULONG EntryPoint;
- ULONG SizeOfImage;
- UNICODE_STRING32 FullDllName;
- UNICODE_STRING32 BaseDllName;
- ULONG Flags;
- USHORT LoadCount;
- USHORT TlsIndex;
- LIST_ENTRY32 HashLinks;
- ULONG TimeDateStamp;
- } LDR_DATA_TABLE_ENTRY32, *PLDR_DATA_TABLE_ENTRY32;
- 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;
- ULONG Flags;
- USHORT LoadCount;
- USHORT TlsIndex;
- LIST_ENTRY HashLinks;
- ULONG TimeDateStamp;
- } LDR_DATA_TABLE_ENTRY, *PLDR_DATA_TABLE_ENTRY;
- typedef struct _PEB32
- {
- UCHAR InheritedAddressSpace;
- UCHAR ReadImageFileExecOptions;
- UCHAR BeingDebugged;
- UCHAR BitField;
- ULONG Mutant;
- ULONG ImageBaseAddress;
- ULONG Ldr;
- ULONG ProcessParameters;
- ULONG SubSystemData;
- ULONG ProcessHeap;
- ULONG FastPebLock;
- ULONG AtlThunkSListPtr;
- ULONG IFEOKey;
- ULONG CrossProcessFlags;
- ULONG UserSharedInfoPtr;
- ULONG SystemReserved;
- ULONG AtlThunkSListPtr32;
- ULONG ApiSetMap;
- } PEB32, *PPEB32;
- typedef struct _PEB
- {
- UCHAR InheritedAddressSpace;
- UCHAR ReadImageFileExecOptions;
- UCHAR BeingDebugged;
- UCHAR BitField;
- PVOID Mutant;
- PVOID ImageBaseAddress;
- PPEB_LDR_DATA Ldr;
- PVOID ProcessParameters;
- PVOID SubSystemData;
- PVOID ProcessHeap;
- PVOID FastPebLock;
- PVOID AtlThunkSListPtr;
- PVOID IFEOKey;
- PVOID CrossProcessFlags;
- PVOID KernelCallbackTable;
- ULONG SystemReserved;
- ULONG AtlThunkSListPtr32;
- PVOID ApiSetMap;
- } PEB, *PPEB;
- typedef struct _KLDR_DATA_TABLE_ENTRY
- {
- LIST_ENTRY InLoadOrderLinks;
- PVOID ExceptionTable;
- ULONG ExceptionTableSize;
- PVOID GpValue;
- ULONG UnKnow;
- PVOID DllBase;
- PVOID EntryPoint;
- ULONG SizeOfImage;
- UNICODE_STRING FullDllName;
- UNICODE_STRING BaseDllName;
- ULONG Flags;
- USHORT LoadCount;
- USHORT __Unused5;
- PVOID SectionPointer;
- ULONG CheckSum;
- PVOID LoadedImports;
- PVOID PatchInformation;
- } KLDR_DATA_TABLE_ENTRY, *PKLDR_DATA_TABLE_ENTRY;
- typedef struct _WOW64_FLOATING_SAVE_AREA
- {
- DWORD ControlWord;
- DWORD StatusWord;
- DWORD TagWord;
- DWORD ErrorOffset;
- DWORD ErrorSelector;
- DWORD DataOffset;
- DWORD DataSelector;
- BYTE RegisterArea[WOW64_SIZE_OF_80387_REGISTERS];
- DWORD Cr0NpxState;
- } WOW64_FLOATING_SAVE_AREA;
- typedef struct _WOW64_CONTEXT
- {
- DWORD padding;
- DWORD ContextFlags;
- DWORD Dr0;
- DWORD Dr1;
- DWORD Dr2;
- DWORD Dr3;
- DWORD Dr6;
- DWORD Dr7;
- WOW64_FLOATING_SAVE_AREA FloatSave;
- DWORD SegGs;
- DWORD SegFs;
- DWORD SegEs;
- DWORD SegDs;
- DWORD Edi;
- DWORD Esi;
- DWORD Ebx;
- DWORD Edx;
- DWORD Ecx;
- DWORD Eax;
- DWORD Ebp;
- DWORD Eip;
- DWORD SegCs;
- DWORD EFlags;
- DWORD Esp;
- DWORD SegSs;
- BYTE ExtendedRegisters[WOW64_MAXIMUM_SUPPORTED_EXTENSION];
- } WOW64_CONTEXT, *PWOW64_CONTEXT;
- // 自定义注入结构体
- typedef struct _INJECT_BUFFER
- {
- UCHAR Code[0x200];
- UNICODE_STRING Path;
- UNICODE_STRING32 Path32;
- wchar_t Buffer[488];
- PVOID ModuleHandle;
- ULONG Complete;
- NTSTATUS Status;
- ULONG64 orgRipAddress;
- ULONG64 orgRip;
- } INJECT_BUFFER, *PINJECT_BUFFER;
复制代码 SearchOPcode 特征码定位基址: 在注入之前我们需要通过SearchOPcode()函数动态的寻找几个关键函数的基址,以PsSuspendThread函数的寻找为例,通过WinDBG我们可以定位到该函数,该函数模块在ntoskrnl.exe中,且无法直接通过MmGetSystemRoutineAddress拿到,为了能通过代码拿到该函数的入口地址,我提取fffff804204de668到fffff804204de670位置处的特征码,由于fffff804204de668距离PsSuspendThread函数开头只有24字节,所以直接通过-24即可得到。

通过调用SearchOPcode()并传入机器码即可直接拿到PsSuspendThread的入口地址,根据上述方式我们需要分别得到PsSuspendThread,PsResumeThread这几个函数的内存基址,这些函数的具体作用如下所示;
- PsSuspendThread() 用于暂停或者挂起线程
- PsResumeThread() 用于恢复线程
其次还需要通过MmGetSystemRoutineAddress函数动态的得到ZwGetNextThread,PsGetThreadTeb,PsGetProcessWow64Process这几个函数的基址,这些函数的具体作用如下所示;
- ZwGetNextThread() 用于获取下一个活动线程
- PsGetThreadTeb() 用于获取线程TEB结构
- PsGetProcessWow64Process() 判断当前进程是否为32位
完整代码如下所示,运行这段代码将定位到我们所需的所有内核函数的基址信息;- // 署名权
- // right to sign one's name on a piece of work
- // PowerBy: LyShark
- // Email: me@lyshark.com
- #include "lyshark.h"
- // 内核特征码定位函数封装
- // 参数1:传入驱动句柄
- // 参数2:传入驱动模块名
- // 参数3:传入节表名称
- // 参数4:传入待搜索机器码字节数组
- // 参数5:传入机器码长度
- // 参数6:基址修正字节数
- PVOID SearchOPcode(PDRIVER_OBJECT pObj, PWCHAR DriverName, PCHAR sectionName, PUCHAR opCode, DWORD len, DWORD offset)
- {
- PVOID dllBase = NULL;
- UNICODE_STRING uniDriverName;
- PKLDR_DATA_TABLE_ENTRY firstentry;
- // 获取驱动入口
- PKLDR_DATA_TABLE_ENTRY entry = (PKLDR_DATA_TABLE_ENTRY)pObj->DriverSection;
- firstentry = entry;
- RtlInitUnicodeString(&uniDriverName, DriverName);
- // 开始遍历
- while ((PKLDR_DATA_TABLE_ENTRY)entry->InLoadOrderLinks.Flink != firstentry)
- {
- if (entry->FullDllName.Buffer != 0 && entry->BaseDllName.Buffer != 0)
- {
- // 如果找到了所需模块则将其基地址返回
- if (RtlCompareUnicodeString(&uniDriverName, &(entry->BaseDllName), FALSE) == 0)
- {
- dllBase = entry->DllBase;
- break;
- }
- }
- entry = (PKLDR_DATA_TABLE_ENTRY)entry->InLoadOrderLinks.Flink;
- }
- if (dllBase)
- {
- __try
- {
- // 载入模块基地址
- PIMAGE_DOS_HEADER ImageDosHeader = (PIMAGE_DOS_HEADER)dllBase;
- if (ImageDosHeader->e_magic != IMAGE_DOS_SIGNATURE)
- {
- return NULL;
- }
- // 得到模块NT头以及Section节头
- PIMAGE_NT_HEADERS64 pImageNtHeaders64 = (PIMAGE_NT_HEADERS64)((PUCHAR)dllBase + ImageDosHeader->e_lfanew);
- PIMAGE_SECTION_HEADER pSectionHeader = (PIMAGE_SECTION_HEADER)((PUCHAR)pImageNtHeaders64 + sizeof(pImageNtHeaders64->Signature) + sizeof(pImageNtHeaders64->FileHeader) + pImageNtHeaders64->FileHeader.SizeOfOptionalHeader);
- PUCHAR endAddress = 0;
- PUCHAR starAddress = 0;
- // 寻找符合条件的节
- for (int i = 0; i < pImageNtHeaders64->FileHeader.NumberOfSections; i++)
- {
- if (memcmp(sectionName, pSectionHeader->Name, strlen(sectionName) + 1) == 0)
- {
- starAddress = pSectionHeader->VirtualAddress + (PUCHAR)dllBase;
- endAddress = pSectionHeader->VirtualAddress + (PUCHAR)dllBase + pSectionHeader->SizeOfRawData;
- break;
- }
- pSectionHeader++;
- }
- if (endAddress && starAddress)
- {
- // 找到会开始寻找特征
- for (; starAddress < endAddress - len - 1; starAddress++)
- {
- // 验证访问权限
- if (MmIsAddressValid(starAddress))
- {
- DWORD i = 0;
- for (; i < len; i++)
- {
- // 判断是否为通配符'*'
- if (opCode[i] == 0x2a)
- {
- continue;
- }
- // 找到了一个字节则跳出
- if (opCode[i] != starAddress[i])
- {
- break;
- }
- }
- // 找到次数完全匹配则返回地址
- if (i == len)
- {
- return starAddress + offset;
- }
- }
- }
- }
- }
- __except (EXCEPTION_EXECUTE_HANDLER) {}
- }
- return NULL;
- }
- NTSTATUS UnDriver(PDRIVER_OBJECT driver)
- {
- return STATUS_SUCCESS;
- }
- NTSTATUS DriverEntry(IN PDRIVER_OBJECT Driver, PUNICODE_STRING RegistryPath)
- {
- DbgPrint("Hello LyShark.com \n");
- /*
- 0: kd> uf PsSuspendThread
- nt!PsSuspendThread:
- fffff804`204de650 4889542410 mov qword ptr [rsp+10h],rdx
- fffff804`204de655 48894c2408 mov qword ptr [rsp+8],rcx
- fffff804`204de65a 53 push rbx
- fffff804`204de65b 56 push rsi
- fffff804`204de65c 57 push rdi
- fffff804`204de65d 4156 push r14
- fffff804`204de65f 4157 push r15
- fffff804`204de661 4883ec30 sub rsp,30h
- fffff804`204de665 4c8bf2 mov r14,rdx
- fffff804`204de668 488bf9 mov rdi,rcx
- fffff804`204de66b 8364242000 and dword ptr [rsp+20h],0
- fffff804`204de670 65488b342588010000 mov rsi,qword ptr gs:[188h]
- fffff804`204de679 4889742470 mov qword ptr [rsp+70h],rsi
- fffff804`204de67e 66ff8ee4010000 dec word ptr [rsi+1E4h]
- fffff804`204de685 4c8db9c8060000 lea r15,[rcx+6C8h]
- fffff804`204de68c 4c897c2478 mov qword ptr [rsp+78h],r15
- fffff804`204de691 498bcf mov rcx,r15
- fffff804`204de694 e8c7ff95ff call nt!ExAcquireRundownProtection (fffff804`1fe3e660)
- fffff804`204de699 84c0 test al,al
- fffff804`204de69b 0f84495a1100 je nt!PsSuspendThread+0x115a9a (fffff804`205f40ea) Branch
- */
- UCHAR SuspendOpCode[] = { 0x48, 0x8b, 0xf9, 0x83, 0x64, 0x24, 0x20, 0x00, 0x65, 0x48, 0x8b, 0x34, 0x25, 0x88, 0x01 };
- /*
- 0: kd> uf PsResumeThread
- nt!PsResumeThread:
- fffff804`204c7ab0 48895c2408 mov qword ptr [rsp+8],rbx
- fffff804`204c7ab5 4889742410 mov qword ptr [rsp+10h],rsi
- fffff804`204c7aba 57 push rdi
- fffff804`204c7abb 4883ec20 sub rsp,20h
- fffff804`204c7abf 488bda mov rbx,rdx
- fffff804`204c7ac2 488bf9 mov rdi,rcx
- fffff804`204c7ac5 e8ee4fa5ff call nt!KeResumeThread (fffff804`1ff1cab8)
- fffff804`204c7aca 65488b142588010000 mov rdx,qword ptr gs:[188h]
- fffff804`204c7ad3 8bf0 mov esi,eax
- fffff804`204c7ad5 83f801 cmp eax,1
- fffff804`204c7ad8 7521 jne nt!PsResumeThread+0x4b (fffff804`204c7afb) Branch
- */
- UCHAR ResumeOpCode[] = { 0x48, 0x8b, 0xf9, 0xe8, 0xee, 0x4f, 0xa5, 0xff, 0x65, 0x48, 0x8b, 0x14, 0x25, 0x88 };
- // 特征码检索PsSuspendThread函数基址
- g_PsSuspendThread = (PPsSuspendThread)SearchOPcode(Driver, L"ntoskrnl.exe", "PAGE", SuspendOpCode, sizeof(SuspendOpCode), -24);
- DbgPrint("PsSuspendThread = %p \n", g_PsSuspendThread);
- // 特征码检索PsResumeThread基址
- g_PsResumeThread = (PPsResumeThread)SearchOPcode(Driver, L"ntoskrnl.exe", "PAGE", ResumeOpCode, sizeof(ResumeOpCode), -18);
- DbgPrint("PsResumeThread = %p \n", g_PsResumeThread);
- // 动态获取内存中的ZwGetNextThread基址
- UNICODE_STRING ZwGetNextThreadString = RTL_CONSTANT_STRING(L"ZwGetNextThread");
- g_ZwGetNextThread = (PZwGetNextThread)MmGetSystemRoutineAddress(&ZwGetNextThreadString);
- DbgPrint("ZwGetNextThread = %p \n", g_ZwGetNextThread);
- // 动态获取内存中的PsGetThreadTeb基址
- UNICODE_STRING PsGetThreadTebString = RTL_CONSTANT_STRING(L"PsGetThreadTeb");
- g_PsGetThreadTeb = (PPsGetThreadTeb)MmGetSystemRoutineAddress(&PsGetThreadTebString);
- DbgPrint("PsGetThreadTeb = %p \n", g_PsGetThreadTeb);
- // 动态获取内存中的PsGetProcessWow64Process基址
- UNICODE_STRING PsGetProcessWow64ProcessString = RTL_CONSTANT_STRING(L"PsGetProcessWow64Process");
- g_PsGetProcessWow64Process = (PPsGetProcessWow64Process)MmGetSystemRoutineAddress(&PsGetProcessWow64ProcessString);
- DbgPrint("PsGetProcessWow64Process = %p \n", g_PsGetProcessWow64Process);
- Driver->DriverUnload = UnDriver;
- return STATUS_SUCCESS;
- }
复制代码 编译并运行如上代码片段,则会输出我们所需函数的入口地址,输出效果图如下所示;

GetUserModule 获取模块基址: 此函数的功能是获取到当前内核下特定模块的基址,函数接收三个参数,在入口DriverEntry位置通过KeStackAttachProcess附加到进程空间内,如果是32位进程则通过PsGetProcessWow64Process得到进程的PEB结构,如果是64位则通过PsGetProcessPeb得到PEB进程环境块的目的是为了解析PLIST_ENTRY32链表,通过RtlCompareUnicodeString对比模块是否符合要求,如果符合则在此链表中取出LdrDataTableEntry32->DllBase模块基址并返回给调用者,其完整代码片段如下所示;
- 1.通过KeStackAttachProcess附加到用户层进程空间内
- 2.通过各种函数获取到进程PEB进程环境块
- 3.遍历PLIST_ENTRY32链表,判断ModuleName是否所需
- 4.获取LdrDataTableEntry32->DllBase中的模块基址
- // 署名权
- // right to sign one's name on a piece of work
- // PowerBy: LyShark
- // Email: me@lyshark.com
- #include "lyshark.h"
- // 得到当前用户进程下的模块基址
- // 参数1:传入用户EProcess结构
- // 参数2:传入模块名
- // 参数3:是否32位
- PVOID GetUserModule(IN PEPROCESS EProcess, IN PUNICODE_STRING ModuleName, IN BOOLEAN IsWow64)
- {
- if (EProcess == NULL)
- return NULL;
- __try
- {
- // 执行32位
- if (IsWow64)
- {
- // 获取32位下的PEB进程环境块
- PPEB32 Peb32 = (PPEB32)g_PsGetProcessWow64Process(EProcess);
- if (Peb32 == NULL)
- return NULL;
- if (!Peb32->Ldr)
- return NULL;
- // 循环遍历链表 寻找模块
- for (PLIST_ENTRY32 ListEntry = (PLIST_ENTRY32)((PPEB_LDR_DATA32)Peb32->Ldr)->InLoadOrderModuleList.Flink;
- ListEntry != &((PPEB_LDR_DATA32)Peb32->Ldr)->InLoadOrderModuleList;
- ListEntry = (PLIST_ENTRY32)ListEntry->Flink)
- {
- UNICODE_STRING UnicodeString;
- PLDR_DATA_TABLE_ENTRY32 LdrDataTableEntry32 = CONTAINING_RECORD(ListEntry, LDR_DATA_TABLE_ENTRY32, InLoadOrderLinks);
- // 初始化模块名
- RtlUnicodeStringInit(&UnicodeString, (PWCH)LdrDataTableEntry32->BaseDllName.Buffer);
- // 对比模块名是否符合
- if (RtlCompareUnicodeString(&UnicodeString, ModuleName, TRUE) == 0)
- return (PVOID)LdrDataTableEntry32->DllBase;
- }
- }
- // 执行64位
- else
- {
- // 得到64位PEB进程环境块
- PPEB Peb = PsGetProcessPeb(EProcess);
- if (!Peb)
- return NULL;
- if (!Peb->Ldr)
- return NULL;
- // 开始遍历模块
- for (PLIST_ENTRY ListEntry = Peb->Ldr->InLoadOrderModuleList.Flink;
- ListEntry != &Peb->Ldr->InLoadOrderModuleList;
- ListEntry = ListEntry->Flink)
- {
- // 得到表头
- PLDR_DATA_TABLE_ENTRY LdrDataTableEntry = CONTAINING_RECORD(ListEntry, LDR_DATA_TABLE_ENTRY, InLoadOrderLinks);
- // 判断是否是所需要的模块
- if (RtlCompareUnicodeString(&LdrDataTableEntry->BaseDllName, ModuleName, TRUE) == 0)
- return LdrDataTableEntry->DllBase;
- }
- }
- }
- __except (EXCEPTION_EXECUTE_HANDLER){}
- return NULL;
- }
- NTSTATUS UnDriver(PDRIVER_OBJECT driver)
- {
- return STATUS_SUCCESS;
- }
- NTSTATUS DriverEntry(IN PDRIVER_OBJECT Driver, PUNICODE_STRING RegistryPath)
- {
- DbgPrint("Hello LyShark.com \n");
- // 动态获取内存中的PsGetProcessWow64Process基址
- UNICODE_STRING PsGetProcessWow64ProcessString = RTL_CONSTANT_STRING(L"PsGetProcessWow64Process");
- g_PsGetProcessWow64Process = (PPsGetProcessWow64Process)MmGetSystemRoutineAddress(&PsGetProcessWow64ProcessString);
- DbgPrint("PsGetProcessWow64Process = %p \n", g_PsGetProcessWow64Process);
- PEPROCESS pEprocess = NULL;
- DWORD pid = 6084;
- // 根据PID得到进程Eprocess结构
- if (NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)pid, &pEprocess)))
- {
- // 初始化结构
- UNICODE_STRING ntdllString = RTL_CONSTANT_STRING(L"Ntdll.dll");
- KAPC_STATE kApc = { 0 };
- // 附加到进程内
- KeStackAttachProcess(pEprocess, &kApc);
- // 获取NTDLL的模块基地址
- PVOID ntdll_address = GetUserModule(pEprocess, &ntdllString, TRUE);
- if (ntdll_address != NULL)
- {
- DbgPrint("[*] Ntdll Addr = %p \n", ntdll_address);
- }
- // 取消附加
- KeUnstackDetachProcess(&kApc);
- // 递减计数
- ObDereferenceObject(pEprocess);
- }
- Driver->DriverUnload = UnDriver;
- return STATUS_SUCCESS;
- }
复制代码 运行如上这段程序,则会取出进程ID为6084中Ntdll.dll的模块基址,输出效果图如下所示;

GetModuleExport 取导出表函数基址: 此函数的功能是获取到当前内核下特定模块中的特定函数(内存中)基址,函数接收两个参数,在入口DriverEntry位置通过KeStackAttachProcess附加到进程空间内,通过解析IMAGE_DIRECTORY_ENTRY_EXPORT导出表取出导出函数名,此处需要注意如果函数名指针小于等于0xFFFF则说明是序号导出,如果大于0xFFFF则说明是名字导出,判断名字是否一致,如果一致则返回当前内存的ModuleBase模块基址加上pAddressOfFuncs[OrdIndex]相对偏移,从而获取到内存中的绝对地址,完整代码片段如下所示;编译并运行如上代码片段,即可获取到进程6084号,ntdll.dll模块中LdrLoadDll的内存地址,其输出效果图如下所示;

GetCurrentContext 获取当前线程上下文: 此函数的功能是获取附加进程内当前线程的上下文地址,函数接收一个参数,内部通过PsLookupProcessByProcessId得到进程EProcess结构体,通过KeStackAttachProcess附加到进程内,调用g_ZwGetNextThread获取当当前线程上下文,函数ObReferenceObjectByHandle用于将Handle转换为线程对象,之后再通过g_PsSuspendThread暂停线程后,即可通过各类函数获取到该线程的绝大部分信息,最终在调用结束时记得调用g_PsResumeThread恢复线程的运行,并KeUnstackDetachProcess脱离附加,解析上下文环境完整代码如下所示;- // 署名权
- // right to sign one's name on a piece of work
- // PowerBy: LyShark
- // Email: me@lyshark.com
- #include "lyshark.h"
- // ShellCode 注入线程函数
- NTSTATUS GetCurrentContext(ULONG pid, PVOID* allcateAddress)
- {
- PEPROCESS pEprocess = NULL;
- // 根据PID得到进程Eprocess结构
- if (NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)pid, &pEprocess)))
- {
- KAPC_STATE kApc = { 0 };
- // 附加到进程内
- KeStackAttachProcess(pEprocess, &kApc);
- HANDLE threadHandle = NULL;
- // 得到当前正在运行的线程上下文
- if (NT_SUCCESS(g_ZwGetNextThread((HANDLE)-1, (HANDLE)0, 0x1FFFFF, 0x240, 0, &threadHandle)))
- {
- PVOID threadObj = NULL;
- // 在对象句柄上提供访问验证,如果可以授予访问权限,则返回指向对象的正文的相应指针。
- NTSTATUS state = ObReferenceObjectByHandle(threadHandle, 0x1FFFFF, *PsThreadType, KernelMode, &threadObj, NULL);
- if (NT_SUCCESS(state))
- {
- // 暂停线程
- g_PsSuspendThread(threadObj, NULL);
- __try
- {
- // 得到TEB
- PVOID pTeb = g_PsGetThreadTeb(threadObj);
- if (pTeb)
- {
- DbgPrint("[+] 线程环境块TEB = %p \n", pTeb);
- // 得到当前线程上下文
- /* WOW64CONTEXTOFFSET = TlsSlots + 8
- 0: kd> dt _TEB
- nt!_TEB
- + 0x000 NtTib : _NT_TIB
- + 0x1258 StaticUnicodeString : _UNICODE_STRING
- + 0x1268 StaticUnicodeBuffer : [261] Wchar
- + 0x1472 Padding3 : [6] UChar
- + 0x1478 DeallocationStack : Ptr64 Void
- + 0x1480 TlsSlots : [64] Ptr64 Void
- + 0x1680 TlsLinks : _LIST_ENTRY
- + 0x1690 Vdm : Ptr64 Void
- + 0x1698 ReservedForNtRpc : Ptr64 Void
- + 0x16a0 DbgSsReserved : [2] Ptr64 Void
- */
- PWOW64_CONTEXT pCurrentContext = (PWOW64_CONTEXT)(*(ULONG64*)((ULONG64)pTeb + WOW64CONTEXTOFFSET));
- DbgPrint("[-] 当前上下文EIP = %p \n", pCurrentContext->Eip);
- // 检查上下文是否可读
- ProbeForRead((PVOID)pCurrentContext, sizeof(pCurrentContext), sizeof(CHAR));
- UCHAR Code[] = {
- 0xb8, 0x0, 0x0, 0x0, 0x0, // mov eax, orgEip
- 0x58, // pop eax
- 0xc3 // ret
- };
- // 将ShellCode拷贝到InjectBuffer中等待处理
- RtlCopyMemory(allcateAddress, Code, sizeof(Code));
- DbgPrint("[*] 拷贝 [%p] 内存 \n", allcateAddress);;
- // 修改代码模板,将指定位置替换为我们自己的代码
- *(ULONG*)((PUCHAR)allcateAddress + 1) = pCurrentContext->Eip;
- DbgPrint("[*] 替换 [ %p ] 跳转地址 \n", pCurrentContext->Eip);
- // 执行线程
- pCurrentContext->Eip = (ULONG)(ULONG64)(allcateAddress);
- DbgPrint("[*] 执行 [ %p ] 线程函数 \n", pCurrentContext->Eip);
- }
- }
- __except (EXCEPTION_EXECUTE_HANDLER) {}
- // 恢复线程
- g_PsResumeThread(threadObj, NULL);
- ObDereferenceObject(threadObj);
- }
- NtClose(threadHandle);
- }
- // 关闭线程
- KeUnstackDetachProcess(&kApc);
- ObDereferenceObject(pEprocess);
- }
- return STATUS_SUCCESS;
- }
- NTSTATUS UnDriver(PDRIVER_OBJECT driver)
- {
- UNREFERENCED_PARAMETER(driver);
- return STATUS_SUCCESS;
- }
- NTSTATUS DriverEntry(IN PDRIVER_OBJECT Driver, PUNICODE_STRING RegistryPath)
- {
- DbgPrint("Hello LyShark.com \n");
- UNREFERENCED_PARAMETER(RegistryPath);
- // 初始化基址
- InitAddress(Driver);
- ULONG ProcessID = 4904;
- PVOID AllcateAddress = NULL;
- DWORD create_size = 1024;
- // 申请堆 《内核远程堆分配与销毁》核心代码
- NTSTATUS Status = AllocMemory(ProcessID, create_size, &AllcateAddress);
- // 执行ShellCode线程注入
- Status = GetCurrentContext(ProcessID, &AllcateAddress);
- Driver->DriverUnload = UnDriver;
- return STATUS_SUCCESS;
- }
复制代码 运行如上代码片段,则将输出进程ID=4904的当前进程内,线程上下文RIP地址,输出效果如下图所示;

KernelInjectDLL 驱动注入: 如上代码中我们已经找到了驱动注入时所需用到的关键函数,那么实现代码就变得很容易了,驱动注入的实现方式有很多种,不论哪一种其实现的难度并不在于代码本身,而在于某些结构如何正确的被找到,一旦结构被找到原理方面的代码可以说非常容易获取到,如下这段完整代码则是驱动注入的一个简化版,如果你觉得不方便完全可以自行添加IOCTL控制器让其更易于使用,此处为了节约篇幅不在增加冗余代码,代码已做具体分析和备注。
此注入驱动核心实现代码如下所示,其中SearchOPcode用于在内核模块中寻找符合条件的内存地址,GetNativeCode则用于生成一段可被调用的ShellCode代码,此代码执行的目的就是将DLL动态装载到对端内存中,SetThreadStartAddress则用于填充执行线程结构信息,GetUserModule用户获取进程内特定模块的基址,GetModuleExport用于在模块内寻找特定函数的基址,KernelInjectDLL则是最终注入函数,其首先将线程暂停,并注入生成的ShellCode,然后恢复线程让ShellCode跑起来,当ShellCode跑起来后将会自动的将特定目录下的DLL拉起来,以此来实现动态加载的目的。- // 署名权
- // right to sign one's name on a piece of work
- // PowerBy: LyShark
- // Email: me@lyshark.com
- #include "lyshark.h"
- // 内核特征码定位函数封装
- PVOID SearchOPcode(PDRIVER_OBJECT pObj, PWCHAR DriverName, PCHAR sectionName, PUCHAR opCode, int len, int offset)
- {
- PVOID dllBase = NULL;
- UNICODE_STRING uniDriverName;
- PKLDR_DATA_TABLE_ENTRY firstentry;
- // 获取驱动入口
- PKLDR_DATA_TABLE_ENTRY entry = (PKLDR_DATA_TABLE_ENTRY)pObj->DriverSection;
- firstentry = entry;
- RtlInitUnicodeString(&uniDriverName, DriverName);
- // 开始遍历
- while ((PKLDR_DATA_TABLE_ENTRY)entry->InLoadOrderLinks.Flink != firstentry)
- {
- // 如果找到了所需模块则将其基地址返回
- if (entry->FullDllName.Buffer != 0 && entry->BaseDllName.Buffer != 0)
- {
- if (RtlCompareUnicodeString(&uniDriverName, &(entry->BaseDllName), FALSE) == 0)
- {
- dllBase = entry->DllBase;
- break;
- }
- }
- entry = (PKLDR_DATA_TABLE_ENTRY)entry->InLoadOrderLinks.Flink;
- }
- if (dllBase)
- {
- __try
- {
- // 载入模块基地址
- PIMAGE_DOS_HEADER ImageDosHeader = (PIMAGE_DOS_HEADER)dllBase;
- if (ImageDosHeader->e_magic != IMAGE_DOS_SIGNATURE)
- {
- return NULL;
- }
- // 得到模块NT头
- PIMAGE_NT_HEADERS64 pImageNtHeaders64 = (PIMAGE_NT_HEADERS64)((PUCHAR)dllBase + ImageDosHeader->e_lfanew);
- // 获取节表头
- PIMAGE_SECTION_HEADER pSectionHeader = (PIMAGE_SECTION_HEADER)((PUCHAR)pImageNtHeaders64 + sizeof(pImageNtHeaders64->Signature) + sizeof(pImageNtHeaders64->FileHeader) + pImageNtHeaders64->FileHeader.SizeOfOptionalHeader);
- PUCHAR endAddress = 0;
- PUCHAR starAddress = 0;
- // 寻找符合条件的节
- for (int i = 0; i < pImageNtHeaders64->FileHeader.NumberOfSections; i++)
- {
- // 寻找符合条件的表名
- if (memcmp(sectionName, pSectionHeader->Name, strlen(sectionName) + 1) == 0)
- {
- // 取出开始和结束地址
- starAddress = pSectionHeader->VirtualAddress + (PUCHAR)dllBase;
- endAddress = pSectionHeader->VirtualAddress + (PUCHAR)dllBase + pSectionHeader->SizeOfRawData;
- break;
- }
- // 遍历下一个节
- pSectionHeader++;
- }
- if (endAddress && starAddress)
- {
- // 找到会开始寻找特征
- for (; starAddress < endAddress - len - 1; starAddress++)
- {
- // 验证访问权限
- if (MmIsAddressValid(starAddress))
- {
- int i = 0;
- for (; i < len; i++)
- {
- // 判断是否为通配符'*'
- if (opCode[i] == 0x2a)
- continue;
- // 找到了一个字节则跳出
- if (opCode[i] != starAddress[i])
- break;
- }
- // 找到次数完全匹配则返回地址
- if (i == len)
- {
- return starAddress + offset;
- }
- }
- }
- }
- }
- __except (EXCEPTION_EXECUTE_HANDLER) {}
- }
- return NULL;
- }
- // 生成64位注入代码
- PINJECT_BUFFER GetNativeCode(PVOID LdrLoadDll, PUNICODE_STRING DllFullPath, ULONGLONG orgEip)
- {
- SIZE_T Size = PAGE_SIZE;
- PINJECT_BUFFER InjectBuffer = NULL;
- UCHAR Code[] = {
- 0x41, 0x57, // push r15
- 0x41, 0x56, // push r14
- 0x41, 0x55, // push r13
- 0x41, 0x54, // push r12
- 0x41, 0x53, // push r11
- 0x41, 0x52, // push r10
- 0x41, 0x51, // push r9
- 0x41, 0x50, // push r8
- 0x50, // push rax
- 0x51, // push rcx
- 0x53, // push rbx
- 0x52, // push rdx
- 0x55, // push rbp
- 0x54, // push rsp
- 0x56, // push rsi
- 0x57, // push rdi
- 0x66, 0x9C, // pushf
- 0x48, 0x83, 0xEC, 0x26, // sub rsp, 0x28
- 0x48, 0x31, 0xC9, // xor rcx, rcx
- 0x48, 0x31, 0xD2, // xor rdx, rdx
- 0x49, 0xB8, 0, 0, 0, 0, 0, 0, 0, 0, // mov r8, ModuleFileName offset +38
- 0x49, 0xB9, 0, 0, 0, 0, 0, 0, 0, 0, // mov r9, ModuleHandle offset +48
- 0x48, 0xB8, 0, 0, 0, 0, 0, 0, 0, 0, // mov rax, LdrLoadDll offset +58
- 0xFF, 0xD0, // call rax
- 0x48, 0xBA, 0, 0, 0, 0, 0, 0, 0, 0, // mov rdx, COMPLETE_OFFSET offset +70
- 0xC7, 0x02, 0x7E, 0x1E, 0x37, 0xC0, // mov [rdx], CALL_COMPLETE
- 0x48, 0xBA, 0, 0, 0, 0, 0, 0, 0, 0, // mov rdx, STATUS_OFFSET offset +86
- 0x89, 0x02, // mov [rdx], eax
- 0x48, 0x83, 0xC4, 0x26, // add rsp, 0x28
- 0x66, 0x9D, // popf
- 0x5F, // pop rdi
- 0x5E, // pop rsi
- 0x5C, // pop rsp
- 0x5D, // pop rbp
- 0x5A, // pop rdx
- 0x5B, // pop rbx
- 0x59, // pop rcx
- 0x58, // pop rax
- 0x41, 0x58, // pop r8
- 0x41, 0x59, // pop r9
- 0x41, 0x5A, // pop r10
- 0x41, 0x5B, // pop r11
- 0x41, 0x5C, // pop r12
- 0x41, 0x5D, // pop r13
- 0x41, 0x5E, // pop r14
- 0x41, 0x5F, // pop r15
- 0x50, // push rax
- 0x50, // push rax
- 0x48, 0xB8, 0, 0, 0, 0, 0, 0, 0, 0, // mov rax, orgEip offset +130
- 0x48, 0x89, 0x44, 0x24, 0x08, // mov [rsp+8],rax
- 0x58, // pop rax
- 0xC3 // ret
- };
- // 在当前进程内分配内存空间
- if (NT_SUCCESS(ZwAllocateVirtualMemory(ZwCurrentProcess(), &InjectBuffer, 0, &Size, MEM_COMMIT, PAGE_EXECUTE_READWRITE)))
- {
- // 初始化路径变量与长度参数
- PUNICODE_STRING UserPath = &InjectBuffer->Path;
- UserPath->Length = DllFullPath->Length;
- UserPath->MaximumLength = DllFullPath->MaximumLength;
- UserPath->Buffer = InjectBuffer->Buffer;
- RtlUnicodeStringCopy(UserPath, DllFullPath);
- // 将ShellCode拷贝到InjectBuffer中等待处理
- memcpy(InjectBuffer, Code, sizeof(Code));
- // 修改代码模板,将指定位置替换为我们自己的代码
- *(ULONGLONG*)((PUCHAR)InjectBuffer + 38) = (ULONGLONG)UserPath;
- *(ULONGLONG*)((PUCHAR)InjectBuffer + 48) = (ULONGLONG)& InjectBuffer->ModuleHandle;
- *(ULONGLONG*)((PUCHAR)InjectBuffer + 58) = (ULONGLONG)LdrLoadDll;
- *(ULONGLONG*)((PUCHAR)InjectBuffer + 70) = (ULONGLONG)& InjectBuffer->Complete;
- *(ULONGLONG*)((PUCHAR)InjectBuffer + 86) = (ULONGLONG)& InjectBuffer->Status;
- *(ULONGLONG*)((PUCHAR)InjectBuffer + 130) = orgEip;
- return InjectBuffer;
- }
- return NULL;
- }
- // 生成32位注入代码
- PINJECT_BUFFER GetWow64Code(PVOID LdrLoadDll, PUNICODE_STRING DllFullPath, ULONG orgEip)
- {
- SIZE_T Size = PAGE_SIZE;
- PINJECT_BUFFER InjectBuffer = NULL;
- UCHAR Code[] = {
- 0x60, // pushad
- 0x9c, // pushfd
- 0x68, 0, 0, 0, 0, // push ModuleHandle offset +3
- 0x68, 0, 0, 0, 0, // push ModuleFileName offset +8
- 0x6A, 0, // push Flags
- 0x6A, 0, // push PathToFile
- 0xE8, 0, 0, 0, 0, // call LdrLoadDll offset +17
- 0xBA, 0, 0, 0, 0, // mov edx, COMPLETE_OFFSET offset +22
- 0xC7, 0x02, 0x7E, 0x1E, 0x37, 0xC0, // mov [edx], CALL_COMPLETE
- 0xBA, 0, 0, 0, 0, // mov edx, STATUS_OFFSET offset +33
- 0x89, 0x02, // mov [edx], eax
- 0x9d, // popfd
- 0x61, // popad
- 0x50, // push eax
- 0x50, // push eax
- 0xb8, 0, 0, 0, 0, // mov eax, orgEip
- 0x89, 0x44, 0x24, 0x04, // mov [esp+4],eax
- 0x58, // pop eax
- 0xc3 // ret
- };
- /*
- 如下代码中通过定义Code并写入调用模块加载的汇编指令集,通过运用ZwAllocateVirtualMemory在当前进程也就是附加到对端以后的进程内动态开辟了一块长度为Size的内存空间并赋予了PAGE_EXECUTE_READWRITE读写执行属性,
- 由于Code代码无法直接使用,则此处调用RtlCopyMemory将指令拷贝到了InjectBuffer其目的是用于后续的填充工作,最后通过*(ULONG*)((PUCHAR)InjectBuffer + 3)的方式将需要使用的函数地址,
- 模块信息等依次填充到汇编代码的指定位置,并返回InjectBuffer指针。
- */
- // 在当前进程内分配内存空间
- if (NT_SUCCESS(ZwAllocateVirtualMemory(ZwCurrentProcess(), &InjectBuffer, 0, &Size, MEM_COMMIT, PAGE_EXECUTE_READWRITE)))
- {
- // 初始化路径变量与长度参数
- PUNICODE_STRING32 pUserPath = &InjectBuffer->Path32;
- pUserPath->Length = DllFullPath->Length;
- pUserPath->MaximumLength = DllFullPath->MaximumLength;
- pUserPath->Buffer = (ULONG)(ULONG_PTR)InjectBuffer->Buffer;
- // 将ShellCode拷贝到InjectBuffer中等待处理
- memcpy((PVOID)pUserPath->Buffer, DllFullPath->Buffer, DllFullPath->Length);
- memcpy(InjectBuffer, Code, sizeof(Code));
- // 修改代码模板,将指定位置替换为我们自己的代码
- *(ULONG*)((PUCHAR)InjectBuffer + 3) = (ULONG)(ULONG_PTR)& InjectBuffer->ModuleHandle;
- *(ULONG*)((PUCHAR)InjectBuffer + 8) = (ULONG)(ULONG_PTR)pUserPath;
- *(ULONG*)((PUCHAR)InjectBuffer + 17) = (ULONG)((ULONG_PTR)LdrLoadDll - ((ULONG_PTR)InjectBuffer + 17) - 5 + 1);
- *(ULONG*)((PUCHAR)InjectBuffer + 22) = (ULONG)(ULONG_PTR)& InjectBuffer->Complete;
- *(ULONG*)((PUCHAR)InjectBuffer + 33) = (ULONG)(ULONG_PTR)& InjectBuffer->Status;
- *(ULONG*)((PUCHAR)InjectBuffer + 44) = orgEip;
- return InjectBuffer;
- }
- return NULL;
- }
- // 设置线程执行地址
- NTSTATUS SetThreadStartAddress(PETHREAD pEthread, BOOLEAN isWow64, PVOID LdrLoadDll, PUNICODE_STRING DllFullPath, PINJECT_BUFFER *allcateAddress)
- {
- __try
- {
- // 判断是32位则执行
- if (isWow64)
- {
- // 得到线程TEB
- PVOID pTeb = g_PsGetThreadTeb(pEthread);
- if (pTeb)
- {
- // 得到当前线程上下文
- PWOW64_CONTEXT pCurrentContext = (PWOW64_CONTEXT)(*(ULONG64*)((ULONG64)pTeb + WOW64CONTEXTOFFSET));
- // 检查上下文是否可读
- ProbeForRead((PVOID)pCurrentContext, sizeof(pCurrentContext), sizeof(CHAR));
- // 生成注入代码
- PINJECT_BUFFER newAddress = GetWow64Code(LdrLoadDll, DllFullPath, pCurrentContext->Eip);
- if (newAddress)
- {
- // 替换上下文地址到内存中
- newAddress->orgRipAddress = (ULONG64)& (pCurrentContext->Eip);
- newAddress->orgRip = pCurrentContext->Eip;
- *allcateAddress = newAddress;
- pCurrentContext->Eip = (ULONG)(ULONG64)(newAddress);
- }
- return STATUS_SUCCESS;
- }
- }
- // 执行64位代码
- else
- {
- // 验证地址是否可读取
- if (MmIsAddressValid((PVOID)* (ULONG64*)((ULONG64)pEthread + INITIALSTACKOFFSET)))
- {
- // 当前TID
- PKTRAP_FRAME pCurrentTrap = (PKTRAP_FRAME)(*(ULONG64*)((ULONG64)pEthread + INITIALSTACKOFFSET) - sizeof(KTRAP_FRAME));
- // 生成注入代码
- PINJECT_BUFFER newAddress = GetNativeCode(LdrLoadDll, DllFullPath, pCurrentTrap->Rip);
- if (newAddress)
- {
- // 替换当前RIP地址
- newAddress->orgRipAddress = (ULONG64)& (pCurrentTrap->Rip);
- newAddress->orgRip = pCurrentTrap->Rip;
- *allcateAddress = newAddress;
- pCurrentTrap->Rip = (ULONG64)newAddress;
- }
- }
- return STATUS_SUCCESS;
- }
- }
- __except (EXCEPTION_EXECUTE_HANDLER) {}
- return STATUS_UNSUCCESSFUL;
- }
- // 得到当前用户进程下的模块基址
- PVOID GetUserModule(IN PEPROCESS EProcess, IN PUNICODE_STRING ModuleName, IN BOOLEAN IsWow64)
- {
- if (EProcess == NULL)
- return NULL;
- __try
- {
- // 执行32位
- if (IsWow64)
- {
- // 获取32位下的PEB进程环境块
- PPEB32 Peb32 = (PPEB32)g_PsGetProcessWow64Process(EProcess);
- if (Peb32 == NULL)
- return NULL;
- if (!Peb32->Ldr)
- return NULL;
- // 循环遍历链表 寻找模块
- for (PLIST_ENTRY32 ListEntry = (PLIST_ENTRY32)((PPEB_LDR_DATA32)Peb32->Ldr)->InLoadOrderModuleList.Flink;
- ListEntry != &((PPEB_LDR_DATA32)Peb32->Ldr)->InLoadOrderModuleList;
- ListEntry = (PLIST_ENTRY32)ListEntry->Flink)
- {
- UNICODE_STRING UnicodeString;
- PLDR_DATA_TABLE_ENTRY32 LdrDataTableEntry32 = CONTAINING_RECORD(ListEntry, LDR_DATA_TABLE_ENTRY32, InLoadOrderLinks);
- // 初始化模块名
- RtlUnicodeStringInit(&UnicodeString, (PWCH)LdrDataTableEntry32->BaseDllName.Buffer);
- // 对比模块名是否符合
- if (RtlCompareUnicodeString(&UnicodeString, ModuleName, TRUE) == 0)
- return (PVOID)LdrDataTableEntry32->DllBase;
- }
- }
- // 执行64位
- else
- {
- // 得到64位PEB进程环境块
- PPEB Peb = PsGetProcessPeb(EProcess);
- if (!Peb)
- return NULL;
- if (!Peb->Ldr)
- return NULL;
- // 开始遍历模块
- for (PLIST_ENTRY ListEntry = Peb->Ldr->InLoadOrderModuleList.Flink;
- ListEntry != &Peb->Ldr->InLoadOrderModuleList;
- ListEntry = ListEntry->Flink)
- {
- // 得到表头
- PLDR_DATA_TABLE_ENTRY LdrDataTableEntry = CONTAINING_RECORD(ListEntry, LDR_DATA_TABLE_ENTRY, InLoadOrderLinks);
- // 判断是否是所需要的模块
- if (RtlCompareUnicodeString(&LdrDataTableEntry->BaseDllName, ModuleName, TRUE) == 0)
- return LdrDataTableEntry->DllBase;
- }
- }
- }
- __except (EXCEPTION_EXECUTE_HANDLER){}
- return NULL;
- }
- // 根据函数名得到导出表地址
- PVOID GetModuleExport(IN PVOID ModuleBase, IN PCCHAR FunctionName)
- {
- PIMAGE_DOS_HEADER ImageDosHeader = (PIMAGE_DOS_HEADER)ModuleBase;
- PIMAGE_NT_HEADERS32 ImageNtHeaders32 = NULL;
- PIMAGE_NT_HEADERS64 ImageNtHeaders64 = NULL;
- PIMAGE_EXPORT_DIRECTORY ImageExportDirectory = NULL;
- ULONG ExportDirectorySize = 0;
- ULONG_PTR FunctionAddress = 0;
- if (ModuleBase == NULL)
- return NULL;
- __try
- {
- // 判断是否是DOS头
- if (ImageDosHeader->e_magic != IMAGE_DOS_SIGNATURE)
- {
- return NULL;
- }
- // 获取PE结构节NT头
- ImageNtHeaders32 = (PIMAGE_NT_HEADERS32)((PUCHAR)ModuleBase + ImageDosHeader->e_lfanew);
- ImageNtHeaders64 = (PIMAGE_NT_HEADERS64)((PUCHAR)ModuleBase + ImageDosHeader->e_lfanew);
- // 判断是否是64位
- if (ImageNtHeaders64->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC)
- {
- // 如果是64位则执行如下
- ImageExportDirectory = (PIMAGE_EXPORT_DIRECTORY)(ImageNtHeaders64->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress + (ULONG_PTR)ModuleBase);
- ExportDirectorySize = ImageNtHeaders64->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
- }
- else
- {
- // 如果32位则执行如下
- ImageExportDirectory = (PIMAGE_EXPORT_DIRECTORY)(ImageNtHeaders32->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress + (ULONG_PTR)ModuleBase);
- ExportDirectorySize = ImageNtHeaders32->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
- }
- // 取出导出表Index,名字,函地址等
- PUSHORT pAddressOfOrds = (PUSHORT)(ImageExportDirectory->AddressOfNameOrdinals + (ULONG_PTR)ModuleBase);
- PULONG pAddressOfNames = (PULONG)(ImageExportDirectory->AddressOfNames + (ULONG_PTR)ModuleBase);
- PULONG pAddressOfFuncs = (PULONG)(ImageExportDirectory->AddressOfFunctions + (ULONG_PTR)ModuleBase);
- // 循环导出表
- for (ULONG i = 0; i < ImageExportDirectory->NumberOfFunctions; ++i)
- {
- USHORT OrdIndex = 0xFFFF;
- PCHAR pName = NULL;
- // 说明是序号导出
- if ((ULONG_PTR)FunctionName <= 0xFFFF)
- {
- // 得到函数序号
- OrdIndex = (USHORT)i;
- }
- // 说明是名字导出
- else if ((ULONG_PTR)FunctionName > 0xFFFF && i < ImageExportDirectory->NumberOfNames)
- {
- // 得到函数名
- pName = (PCHAR)(pAddressOfNames[i] + (ULONG_PTR)ModuleBase);
- OrdIndex = pAddressOfOrds[i];
- }
- else
- return NULL;
- // 判断函数名是否符合
- if (((ULONG_PTR)FunctionName <= 0xFFFF && (USHORT)((ULONG_PTR)FunctionName) == OrdIndex + ImageExportDirectory->Base) ||
- ((ULONG_PTR)FunctionName > 0xFFFF && strcmp(pName, FunctionName) == 0))
- {
- // 得到完整地址
- FunctionAddress = pAddressOfFuncs[OrdIndex] + (ULONG_PTR)ModuleBase;
- break;
- }
- }
- }
- __except (EXCEPTION_EXECUTE_HANDLER){}
- return (PVOID)FunctionAddress;
- }
- // DLL模块注入线程函数
- NTSTATUS KernelInjectDLL(ULONG pid, PUNICODE_STRING DllFullPath, PINJECT_BUFFER* allcateAddress)
- {
- PEPROCESS pEprocess = NULL;
- // 根据PID得到进程Eprocess结构
- if (NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)pid, &pEprocess)))
- {
- KAPC_STATE kApc = { 0 };
- // 附加到进程内
- KeStackAttachProcess(pEprocess, &kApc);
- // 得到Ntdll.dll模块基址
- UNICODE_STRING ntdllString = RTL_CONSTANT_STRING(L"Ntdll.dll");
- PVOID NtdllAddress = GetUserModule(pEprocess, &ntdllString, g_PsGetProcessWow64Process(pEprocess) != 0);
- if (!NtdllAddress)
- {
- // 失败了则直接脱离附加
- KeUnstackDetachProcess(&kApc);
- ObDereferenceObject(pEprocess);
- return STATUS_UNSUCCESSFUL;
- }
- // 得到LdrLoadDLL模块的基址
- PVOID LdrLoadDll = GetModuleExport(NtdllAddress, "LdrLoadDll");
- if (!LdrLoadDll)
- {
- KeUnstackDetachProcess(&kApc);
- ObDereferenceObject(pEprocess);
- return STATUS_UNSUCCESSFUL;
- }
- HANDLE threadHandle = NULL;
- // 得到当前正在运行的线程上下文
- if (NT_SUCCESS(g_ZwGetNextThread((HANDLE)-1, (HANDLE)0, 0x1FFFFF, 0x240, 0, &threadHandle)))
- {
- PVOID threadObj = NULL;
- // 在对象句柄上提供访问验证,如果可以授予访问权限,则返回指向对象的正文的相应指针。
- NTSTATUS state = ObReferenceObjectByHandle(threadHandle, 0x1FFFFF, *PsThreadType, KernelMode, &threadObj, NULL);
- if (NT_SUCCESS(state))
- {
- // 暂停线程
- g_PsSuspendThread(threadObj, NULL);
- // 设置线程ShellCode代码
- SetThreadStartAddress(threadObj, g_PsGetProcessWow64Process(pEprocess) != 0, LdrLoadDll, DllFullPath, allcateAddress);
- // 恢复线程
- g_PsResumeThread(threadObj, NULL);
- ObDereferenceObject(threadObj);
- }
- NtClose(threadHandle);
- }
- // 关闭线程
- KeUnstackDetachProcess(&kApc);
- ObDereferenceObject(pEprocess);
- }
- return STATUS_SUCCESS;
- }
- NTSTATUS UnDriver(PDRIVER_OBJECT driver)
- {
- UNREFERENCED_PARAMETER(driver);
- return STATUS_SUCCESS;
- }
- NTSTATUS DriverEntry(IN PDRIVER_OBJECT Driver, PUNICODE_STRING RegistryPath)
- {
- DbgPrint("Hello LyShark.com \n");
- UNREFERENCED_PARAMETER(RegistryPath);
- // -----------------------------------------------------------------------
- // 初始化
- // -----------------------------------------------------------------------
- UCHAR SuspendOpCode[] = { 0x48, 0x8b, 0xf9, 0x83, 0x64, 0x24, 0x20, 0x00, 0x65, 0x48, 0x8b, 0x34, 0x25, 0x88, 0x01 };
- UCHAR ResumeOpCode[] = { 0x48, 0x8b, 0xf9, 0xe8, 0xee, 0x4f, 0xa5, 0xff, 0x65, 0x48, 0x8b, 0x14, 0x25, 0x88 };
- // 特征码检索PsSuspendThread函数基址
- g_PsSuspendThread = (PPsSuspendThread)SearchOPcode(Driver, L"ntoskrnl.exe", "PAGE", SuspendOpCode, sizeof(SuspendOpCode), -24);
- DbgPrint("PsSuspendThread = %p \n", g_PsSuspendThread);
- // 特征码检索PsResumeThread基址
- g_PsResumeThread = (PPsResumeThread)SearchOPcode(Driver, L"ntoskrnl.exe", "PAGE", ResumeOpCode, sizeof(ResumeOpCode), -18);
- DbgPrint("PsResumeThread = %p \n", g_PsResumeThread);
- // 动态获取内存中的ZwGetNextThread基址
- UNICODE_STRING ZwGetNextThreadString = RTL_CONSTANT_STRING(L"ZwGetNextThread");
- g_ZwGetNextThread = (PZwGetNextThread)MmGetSystemRoutineAddress(&ZwGetNextThreadString);
- DbgPrint("ZwGetNextThread = %p \n", g_ZwGetNextThread);
- // 动态获取内存中的PsGetThreadTeb基址
- UNICODE_STRING PsGetThreadTebString = RTL_CONSTANT_STRING(L"PsGetThreadTeb");
- g_PsGetThreadTeb = (PPsGetThreadTeb)MmGetSystemRoutineAddress(&PsGetThreadTebString);
- DbgPrint("PsGetThreadTeb = %p \n", g_PsGetThreadTeb);
- // 动态获取内存中的PsGetProcessWow64Process基址
- UNICODE_STRING PsGetProcessWow64ProcessString = RTL_CONSTANT_STRING(L"PsGetProcessWow64Process");
- g_PsGetProcessWow64Process = (PPsGetProcessWow64Process)MmGetSystemRoutineAddress(&PsGetProcessWow64ProcessString);
- DbgPrint("PsGetProcessWow64Process = %p \n", g_PsGetProcessWow64Process);
- // -----------------------------------------------------------------------
- // 注入代码
- // -----------------------------------------------------------------------
- ULONG ProcessID = 984;
- UNICODE_STRING InjectDllPath = RTL_CONSTANT_STRING(L"C:\\Users\\lyshark\\Desktop\\hook.dll");
- PINJECT_BUFFER AllcateAddress = NULL;
- // 执行线程注入
- NTSTATUS Status = KernelInjectDLL(ProcessID, &InjectDllPath, &AllcateAddress);
- if (Status == STATUS_SUCCESS)
- {
- DbgPrint("[*] 线程注入PID = %d | DLL = %wZ \n", ProcessID, InjectDllPath);
- }
- Driver->DriverUnload = UnDriver;
- return STATUS_SUCCESS;
- }
复制代码 首先你需要自行准备好一个DLL文件,此处我的是hook.dll将文件放入到桌面,然后设置ProcessID指定进程ID,设置InjectDllPath指定DLL路径,签名后将驱动加载起来,此时你会看到WinDBG中的输出,且应用层的进程也会弹出hello lyshark的消息,说明注入成功了,如下图所示;

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