我试图枚举每个进程句柄并愿意获取他们的名字，其中一些是未命名的。我怎样才能解决这个问题？当我使用进程黑客或进程资源管理器检查它时，他们可以使用未命名的句柄名称。
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]\n");
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.)\n", 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!\n");
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,
handle.Handle,
GetCurrentProcess(),
&dupHandle,
0,
0,
0
)))
{
printf("[%#x] Error!\n", 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!\n", 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)\n",
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)\n",
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\n",
handle.Handle,
objectTypeInfo->Name.Length / 2,
objectTypeInfo->Name.Buffer,
objectName.Length / 2,
objectName.Buffer
);
}
else
{
/* Print something else. */
printf(
"[%#x] %.*S: (unnamed)\n",
handle.Handle,
objectTypeInfo->Name.Length / 2,
objectTypeInfo->Name.Buffer
);
}
free(objectTypeInfo);
free(objectNameInfo);
CloseHandle(dupHandle);
}
free(handleInfo);
CloseHandle(processHandle);
return 0;
}
答案 0 :(得分：0)
{
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.)\n", 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!\n");
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,
handle.Handle,
GetCurrentProcess(),
&dupHandle,
0,
0,
0
)))
{
printf("[%#x] Error!\n", 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!\n", 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)\n",
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)\n",
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\n",
handle.Handle,
objectTypeInfo->Name.Length / 2,
objectTypeInfo->Name.Buffer,
objectName.Length / 2,
objectName.Buffer
);
}
else
{
/* Print something else. */
printf(
"[%#x] %.*S: (unnamed)\n",
handle.Handle,
objectTypeInfo->Name.Length / 2,
objectTypeInfo->Name.Buffer
);
}
free(objectTypeInfo);
free(objectNameInfo);
CloseHandle(dupHandle);
}
free(handleInfo);
CloseHandle(processHandle);
return 0;
}