Ring3句柄表的枚举

由于windows并没有给出枚举所有句柄所用到的API，要获得句柄，我们必须使用未公开的Native API才可以，使用如下函数：

NTSTATUS WINAPI NtQuerySystemInformation(
  _In_      SYSTEM_INFORMATION_CLASS SystemInformationClass,
  _Inout_   PVOID                    SystemInformation,
  _In_      ULONG                    SystemInformationLength,
  _Out_opt_ PULONG                   ReturnLength
);

枚举的关键是使用NtQuerySystemInformation，注意它的第一项，是我们查询枚举信息所想要做的class集合，如下，我们在这里使用的是 SystemHandleInformation（16），这很重要,

typedef enum _SYSTEM_INFORMATION_CLASS {
    SystemBasicInformation,
    SystemProcessorInformation,
    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;

第17项（枚举值16）的SystemHandleInformation，这就是我们想要的东西，通过这个值传入NtQuerySystemInformation

 

 然后我们利用ObjectTypeInformation ObjectNameInformation（下面是他们的结构体） 去枚举对象类型和对象名字，这样我们得到这三项做信息查询枚举，做小MFC可以知道句柄和对应的对象类型，对象名字，是一个很简答的查阅工具

typedef enum OBJECT_INFORMATION_CLASS
{
ObjectBasicInformation,
ObjectNameInformation,
ObjectTypeInformation,
ObjectTypesInformation,
ObjectHandleFlagInformation,
ObjectSessionInformation,
MaxObjectInfoClass
}OBJECT_INFORMATION_CLASS;

当然我们这里为了在MFC显示要有自己的数据结构去得到这些值，然后压栈，显示等，这是我的结构体：

typedef
struct _USER_DATA_
{
HANDLE HandleValue;
uint32_t GrantedAccess = 0;//要求
uint32_t Flags = 0;
ULONG64 ObjectValue;

std::wstring ObjectTypeName;//类型
std::wstring ObjectName;//对象名字
SECTION_INFORMATION SectionInfo;
}USER_DATA, *PUSER_DATA;

接下来是枚举的代码过程：其中有注释

if ((ProcessHandle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, ProcessID)) == NULL)
{
return Status;
}
if (__NtQuerySystemInformation==NULL||__NtDuplicateObject==NULL||__NtQueryObject==NULL||__NtQuerySection==NULL)
{
goto Exit;
}

BufferData = (uint8_t*)VirtualAlloc(NULL, BufferLength, MEM_COMMIT/*物理页属性*/, PAGE_READWRITE);
if (BufferData = NULL)
{
goto Exit;
}

Status = __NtQuerySystemInformation(SystemHandleInformation, BufferData, BufferLength, &ReturnLength);
//得到系统信息
while (Status == STATUS_INFO_LENGTH_MISMATCH)
{
BufferLength *= 2;
VirtualFree(BufferData, 0, MEM_RELEASE);
BufferData = (uint8_t*)VirtualAlloc(NULL, BufferLength, MEM_COMMIT, PAGE_READWRITE);
Status = __NtQuerySystemInformation(SystemHandleInformation, BufferData, BufferLength, &ReturnLength);
}
//列表获得句柄
SE_SYSTEM_EHT_INFORMATION_T* SystemEHTInfo = (SE_SYSTEM_EHT_INFORMATION_T*)BufferData;//模板定义记笔记
for (ULONG i = 0; i < SystemEHTInfo->ItemCount; i++)
{
if (SystemEHTInfo->Items[i].ProcessID != ProcessID)
{
continue;
}
//拷贝
Status = __NtDuplicateObject(ProcessHandle, reinterpret_cast<HANDLE>(SystemEHTInfo->Items[i].HandleValue/*获得句柄所以 这样*/),
GetCurrentProcess()/*给到当前*/, &DuplicatedHandle, 0, 0, DUPLICATE_SAME_ACCESS);//拷贝
if (!NT_SUCCESS(Status))
{
continue;
}
//还是结构体模板
//对象信息获得
ObjectTypeInfo = (OBJECT_TYPE_INFORMATION_T*)malloc(0x1000);
Status = __NtQueryObject(DuplicatedHandle, ObjectTypeInformation, ObjectTypeInfo, 0x1000, &ReturnLength);
if (!NT_SUCCESS(Status))
{
CloseHandle(DuplicateHandle);
continue;
}
ObjectNameInfo = malloc(0x1000);
Status = __NtQueryObject(DuplicatedHandle, ObjectNameInformation, ObjectNameInfo, 0x1000, &ReturnLength);
if (!NT_SUCCESS(Status))
{
if (Status==STATUS_INFO_LENGTH_MISMATCH)
{
ObjectNameInfo = realloc(ObjectNameInfo, ReturnLength);
Status = __NtQueryObject(DuplicatedHandle, ObjectNameInformation, ObjectNameInfo, ReturnLength/*这儿有点意思*/, &ReturnLength);
if (!NT_SUCCESS(Status))
{
goto Exit;
}
}
else
{
goto Exit;
}
}

ObjectName = *(_UNICODE_STRING_T<WCHAR*>*)ObjectNameInfo;
//赋值到用户上
v1.HandleValue = reinterpret_cast<HANDLE>(SystemEHTInfo->Items[i].HandleValue);
v1.GrantedAccess = SystemEHTInfo->Items[i].GrantedAccess;
v1.Flags = SystemEHTInfo->Items[i].Flags;
v1.ObjectValue = SystemEHTInfo->Items[i].ObjectValue;
//类型状态赋值
if (ObjectTypeInfo->ObjectTypeName.BufferLength)
v1.ObjectTypeName = (wchar_t*)ObjectTypeInfo->ObjectTypeName.BufferData;
if (ObjectName.BufferLength)
v1.ObjectName = ObjectName.BufferData;
if (_wcsicmp(v1.ObjectTypeName.c_str(), L"Section") == 0)
{
SECTION_BASIC_INFORMATION_T SectionBasicInfo = { 0 };
//结构提函数
Status = __NtQuerySection(DuplicatedHandle, SectionBasicInformation, &SectionBasicInfo,
(ULONG)sizeof(SectionBasicInfo), NULL);
if (NT_SUCCESS(Status))
{

v1.SectionInfo.SectionSize = SectionBasicInfo.SectionSize/*T*/.QuadPart;
v1.SectionInfo.SectionAttributes = SectionBasicInfo.Attributes;
}
}
ProcessHandleInfo.push_back(v1);