转载:https://blez.wordpress.com/2012/09/17/enumerating-opened-handles-from-a-process/
因为NtQueryInformation确实缺少文档或示例，因此我会在一两年前杀死这段消息。
以下代码显示特定进程的所有已打开句柄。结合DuplicateHandle技巧，您也可以打开其文件（或其他句柄）。
#ifndef UNICODE#define UNICODE#endif#include <windows.h>#include <stdio.h>#define NT_SUCCESS(x) ((x) >= 0)#define STATUS_INFO_LENGTH_MISMATCH 0xc0000004#define SystemHandleInformation 16#define ObjectBasicInformation 0#define ObjectNameInformation 1#define ObjectTypeInformation 2typedef NTSTATUS (NTAPI *_NtQuerySystemInformation)( ULONG SystemInformationClass, PVOID SystemInformation, ULONG SystemInformationLength, PULONG ReturnLength );typedef NTSTATUS (NTAPI *_NtDuplicateObject)( HANDLE SourceProcessHandle, HANDLE SourceHandle, HANDLE TargetProcessHandle, PHANDLE TargetHandle, ACCESS_MASK DesiredAccess, ULONG Attributes, ULONG Options );typedef NTSTATUS (NTAPI *_NtQueryObject)( HANDLE ObjectHandle, ULONG ObjectInformationClass, PVOID ObjectInformation, ULONG ObjectInformationLength, PULONG ReturnLength );typedef struct _UNICODE_STRING { USHORT Length; USHORT MaximumLength; PWSTR Buffer;} UNICODE_STRING, *PUNICODE_STRING;typedef struct _SYSTEM_HANDLE { ULONG ProcessId; BYTE ObjectTypeNumber; BYTE Flags; USHORT Handle; PVOID Object; ACCESS_MASK GrantedAccess;} SYSTEM_HANDLE, *PSYSTEM_HANDLE;typedef struct _SYSTEM_HANDLE_INFORMATION { ULONG HandleCount; SYSTEM_HANDLE Handles[1];} SYSTEM_HANDLE_INFORMATION, *PSYSTEM_HANDLE_INFORMATION;typedef enum _POOL_TYPE { NonPagedPool, PagedPool, NonPagedPoolMustSucceed, DontUseThisType, NonPagedPoolCacheAligned, PagedPoolCacheAligned, NonPagedPoolCacheAlignedMustS} POOL_TYPE, *PPOOL_TYPE;typedef struct _OBJECT_TYPE_INFORMATION { UNICODE_STRING Name; ULONG TotalNumberOfObjects; ULONG TotalNumberOfHandles; ULONG TotalPagedPoolUsage; ULONG TotalNonPagedPoolUsage; ULONG TotalNamePoolUsage; ULONG TotalHandleTableUsage; ULONG HighWaterNumberOfObjects; ULONG HighWaterNumberOfHandles; ULONG HighWaterPagedPoolUsage; ULONG HighWaterNonPagedPoolUsage; ULONG HighWaterNamePoolUsage; ULONG HighWaterHandleTableUsage; ULONG InvalidAttributes; GENERIC_MAPPING GenericMapping; ULONG ValidAccess; BOOLEAN SecurityRequired; BOOLEAN MaintainHandleCount; USHORT MaintainTypeList; POOL_TYPE PoolType; ULONG PagedPoolUsage; ULONG NonPagedPoolUsage;} OBJECT_TYPE_INFORMATION, *POBJECT_TYPE_INFORMATION;PVOID GetLibraryProcAddress(PSTR LibraryName, PSTR ProcName) { return GetProcAddress(GetModuleHandleA(LibraryName), ProcName);}void ErrorExit(LPTSTR lpszFunction) { // Retrieve the system error message for the last-error code LPVOID lpMsgBuf; LPVOID lpDisplayBuf; DWORD dw = GetLastError(); FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &lpMsgBuf, 0, NULL ); printf((LPTSTR) lpMsgBuf); LocalFree(lpMsgBuf); LocalFree(lpDisplayBuf); ExitProcess(dw);}void ShowErr() { CHAR errormsg[100]; FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0, errormsg, sizeof(errormsg), NULL); printf("ERROR: %s", errormsg);}int wmain(int argc, WCHAR *argv[]) { _NtQuerySystemInformation NtQuerySystemInformation = GetLibraryProcAddress("ntdll.dll", "NtQuerySystemInformation"); _NtDuplicateObject NtDuplicateObject = GetLibraryProcAddress("ntdll.dll", "NtDuplicateObject"); _NtQueryObject NtQueryObject = GetLibraryProcAddress("ntdll.dll", "NtQueryObject"); NTSTATUS status; PSYSTEM_HANDLE_INFORMATION handleInfo; ULONG handleInfoSize = 0x10000; ULONG pid; HANDLE processHandle; ULONG i; if (argc < 2) { printf("Usage: handles [pid]
"); return 1; } pid = _wtoi(argv[1]); if (!(processHandle = OpenProcess(PROCESS_DUP_HANDLE, FALSE, pid))) { printf("Could not open PID %d! (Don't try to open a system process.)
", pid); return 1; } handleInfo = (PSYSTEM_HANDLE_INFORMATION)malloc(handleInfoSize); // NtQuerySystemInformation won't give us the correct buffer size, // so we guess by doubling the buffer size. while ((status = NtQuerySystemInformation( SystemHandleInformation, handleInfo, handleInfoSize, NULL )) == STATUS_INFO_LENGTH_MISMATCH) handleInfo = (PSYSTEM_HANDLE_INFORMATION)realloc(handleInfo, handleInfoSize *= 2); // NtQuerySystemInformation stopped giving us STATUS_INFO_LENGTH_MISMATCH. if (!NT_SUCCESS(status)) { printf("NtQuerySystemInformation failed!
"); return 1; } for (i = 0; i < handleInfo->HandleCount; i++) { SYSTEM_HANDLE handle = handleInfo->Handles[i]; HANDLE dupHandle = NULL; POBJECT_TYPE_INFORMATION objectTypeInfo; PVOID objectNameInfo; UNICODE_STRING objectName; ULONG returnLength; // Check if this handle belongs to the PID the user specified. if (handle.ProcessId != pid) continue; // Duplicate the handle so we can query it. if (!NT_SUCCESS(NtDuplicateObject( processHandle, (void*) handle.Handle, GetCurrentProcess(), &dupHandle, 0, 0, 0 ))) { printf("[%#x] Error!
", handle.Handle); continue; } // Query the object type. objectTypeInfo = (POBJECT_TYPE_INFORMATION)malloc(0x1000); if (!NT_SUCCESS(NtQueryObject( dupHandle, ObjectTypeInformation, objectTypeInfo, 0x1000, NULL ))) { printf("[%#x] Error!
", handle.Handle); CloseHandle(dupHandle); continue; } // Query the object name (unless it has an access of // 0x0012019f, on which NtQueryObject could hang. if (handle.GrantedAccess == 0x0012019f) { // We have the type, so display that. printf( "[%#x] %.*S: (did not get name)
", handle.Handle, objectTypeInfo->Name.Length / 2, objectTypeInfo->Name.Buffer ); free(objectTypeInfo); CloseHandle(dupHandle); continue; } objectNameInfo = malloc(0x1000); if (!NT_SUCCESS(NtQueryObject( dupHandle, ObjectNameInformation, objectNameInfo, 0x1000, &returnLength ))) { // Reallocate the buffer and try again. objectNameInfo = realloc(objectNameInfo, returnLength); if (!NT_SUCCESS(NtQueryObject( dupHandle, ObjectNameInformation, objectNameInfo, returnLength, NULL ))) { // We have the type name, so just display that. printf( "[%#x] %.*S: (could not get name)
", handle.Handle, objectTypeInfo->Name.Length / 2, objectTypeInfo->Name.Buffer ); free(objectTypeInfo); free(objectNameInfo); CloseHandle(dupHandle); continue; } } // Cast our buffer into an UNICODE_STRING. objectName = *(PUNICODE_STRING)objectNameInfo; // Print the information! if (objectName.Length) { // The object has a name. printf( "[%#x] %.*S: %.*S
", handle.Handle, objectTypeInfo->Name.Length / 2, objectTypeInfo->Name.Buffer, objectName.Length / 2, objectName.Buffer ); } else { // Print something else. printf( "[%#x] %.*S: (unnamed)
", handle.Handle, objectTypeInfo->Name.Length / 2, objectTypeInfo->Name.Buffer ); } free(objectTypeInfo); free(objectNameInfo); CloseHandle(dupHandle); } free(handleInfo); CloseHandle(processHandle); return 0;} |