mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-23 11:55:26 +00:00
564 lines
16 KiB
C
564 lines
16 KiB
C
#include "stdafx.h"
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NT_DEVICE_IO_CONTROL_FILE old_NtDeviceIoControlFile = NULL;
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/**
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* Fuzzing settings
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*/
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ULONG m_FuzzOptions = 0;
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FUZZING_TYPE m_FuzzingType = FuzzingType_Random;
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/**
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* Exported variables for acessing to the
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* last IOCTL request information from the kernel debugger.
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*/
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PDEVICE_OBJECT currentDeviceObject = NULL;
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PDRIVER_OBJECT currentDriverObject = NULL;
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ULONG currentIoControlCode = 0;
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PVOID currentInputBuffer = NULL;
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ULONG currentInputBufferLength = 0;
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PVOID currentOutputBuffer = NULL;
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ULONG currentOutputBufferLength = 0;
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/**
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* Handle and objetc pointer of the fuzzer's process (uses for fair fuzzing mode)
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*/
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HANDLE m_FuzzThreadId = 0;
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PEPROCESS m_FuzzProcess = NULL;
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PUSER_MODE_DATA m_UserModeData = NULL;
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/**
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* Some fuzzing parameters
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*/
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#define RANDOM_FUZZING_ITERATIONS 10
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#define BUFFERED_FUZZING_ITERATIONS 5
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#define DWORD_FUZZING_MAX_LENGTH 0x2000
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#define DWORD_FUZZING_DELTA 4
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ULONG g_newDeviceIoControlFileCallCount = 0;
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#ifdef _X86_
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// pointer values for invalid kernel and user buffers
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#define KERNEL_BUFFER_ADDRESS (PVOID)(0xFFFF0000)
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#define USER_BUFFER_ADDRESS (PVOID)(0x00001000)
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#elif _AMD64_
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#define KERNEL_BUFFER_ADDRESS (PVOID)(0xFFFFFFFFFFFF0000)
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#define USER_BUFFER_ADDRESS (PVOID)(0x0000000000001000)
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#endif
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// constants for dword fuzzing
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ULONG m_DwordFuzzingConstants[] =
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{
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0x00000000,
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0x00001000,
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0xFFFF0000,
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0xFFFFFFFF
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};
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// defined in driver.cpp
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extern PDEVICE_OBJECT m_DeviceObject;
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extern KMUTEX m_CommonMutex;
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extern PCOMMON_LST m_ProcessesList;
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//--------------------------------------------------------------------------------------
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PCOMMON_LST_ENTRY LookupProcessInfo(PEPROCESS Process)
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{
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PCOMMON_LST_ENTRY process_entry = NULL;
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KIRQL OldIrql;
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KeAcquireSpinLock(&m_ProcessesList->ListLock, &OldIrql);
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__try
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{
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PCOMMON_LST_ENTRY e = m_ProcessesList->list_head;
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// enumerate all processes
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while (e)
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{
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if (e->Data && e->DataSize == sizeof(LST_PROCESS_INFO))
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{
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PLST_PROCESS_INFO Info = (PLST_PROCESS_INFO)e->Data;
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if (Info->Process == Process)
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{
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process_entry = e;
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break;
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}
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}
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e = e->next;
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}
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}
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__finally
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{
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KeReleaseSpinLock(&m_ProcessesList->ListLock, OldIrql);
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}
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return process_entry;
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}
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//--------------------------------------------------------------------------------------
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void FreeProcessInfo(void)
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{
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KIRQL OldIrql;
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KeAcquireSpinLock(&m_ProcessesList->ListLock, &OldIrql);
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__try
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{
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PCOMMON_LST_ENTRY e = m_ProcessesList->list_head;
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// enumerate all processes
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while (e)
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{
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if (e->Data && e->DataSize == sizeof(LST_PROCESS_INFO))
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{
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PLST_PROCESS_INFO Info = (PLST_PROCESS_INFO)e->Data;
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if (Info->usImagePath.Buffer)
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{
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// free process image path
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RtlFreeUnicodeString(&Info->usImagePath);
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}
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}
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e = e->next;
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}
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}
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__finally
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{
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KeReleaseSpinLock(&m_ProcessesList->ListLock, OldIrql);
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}
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}
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//--------------------------------------------------------------------------------------
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void NTAPI ProcessNotifyRoutine(HANDLE ParentId, HANDLE ProcessId, BOOLEAN Create)
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{
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PEPROCESS Process;
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NTSTATUS ns = PsLookupProcessByProcessId(ProcessId, &Process);
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if (NT_SUCCESS(ns))
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{
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KeWaitForMutexObject(&m_CommonMutex, UserRequest, KernelMode, FALSE, NULL);
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__try
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{
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if (Create)
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{
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// process has been created
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UNICODE_STRING ImagePath;
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// get full image path for this process
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if (GetProcessFullImagePath(Process, &ImagePath))
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{
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WCHAR wcProcess[0x200];
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UNICODE_STRING usProcess;
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LST_PROCESS_INFO Info;
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LogData("Process "IFMT" started: '%wZ' (PID: %d)\r\n\r\n", Process, &ImagePath, ProcessId);
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swprintf(wcProcess, L"'%wZ' (" IFMT_W L")", &ImagePath, Process);
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RtlInitUnicodeString(&usProcess, wcProcess);
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Info.Process = Process;
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Info.ProcessId = ProcessId;
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Info.usImagePath.Buffer = ImagePath.Buffer;
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Info.usImagePath.Length = ImagePath.Length;
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Info.usImagePath.MaximumLength = ImagePath.MaximumLength;
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// add process information into the list
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if (LstAddEntry(m_ProcessesList, &usProcess, &Info, sizeof(Info)) == NULL)
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{
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RtlFreeUnicodeString(&ImagePath);
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}
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}
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}
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else
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{
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PCOMMON_LST_ENTRY process_entry = NULL;
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LogData("Process "IFMT" terminated\r\n\r\n", Process);
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// process terminating
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process_entry = LookupProcessInfo(Process);
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if (process_entry)
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{
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if (process_entry->Data &&
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process_entry->DataSize == sizeof(LST_PROCESS_INFO))
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{
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PLST_PROCESS_INFO Info = (PLST_PROCESS_INFO)process_entry->Data;
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if (Info->usImagePath.Buffer)
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{
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// free process image path
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RtlFreeUnicodeString(&Info->usImagePath);
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}
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}
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// delete information about this process from list
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LstDelEntry(m_ProcessesList, process_entry);
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}
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}
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}
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__finally
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{
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KeReleaseMutex(&m_CommonMutex, FALSE);
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}
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ObDereferenceObject(Process);
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}
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else
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{
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DbgMsg(__FILE__, __LINE__, "PsLookupProcessByProcessId() fails; status: 0x%.8x\n", ns);
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}
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}
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//--------------------------------------------------------------------------------------
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PUNICODE_STRING LookupProcessName(PEPROCESS TargetProcess)
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{
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PEPROCESS Process = TargetProcess;
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PCOMMON_LST_ENTRY process_entry = NULL;
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HANDLE ProcessId = NULL;
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UNICODE_STRING ImagePath;
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PUNICODE_STRING Ret = NULL;
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if (Process == NULL)
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{
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// lookup current process information entry
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Process = PsGetCurrentProcess();
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}
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process_entry = LookupProcessInfo(Process);
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if (process_entry)
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{
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if (process_entry->Data &&
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process_entry->DataSize == sizeof(LST_PROCESS_INFO))
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{
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PLST_PROCESS_INFO Info = (PLST_PROCESS_INFO)process_entry->Data;
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if (Info->usImagePath.Buffer)
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{
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// return process image path
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return &Info->usImagePath;
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}
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}
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return NULL;
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}
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// information entry for current process is not found, allocate it
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ProcessId = PsGetCurrentProcessId();
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// get full image path for this process
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if (GetProcessFullImagePath(Process, &ImagePath))
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{
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WCHAR wcProcess[0x200];
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UNICODE_STRING usProcess;
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LST_PROCESS_INFO Info;
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swprintf(wcProcess, L"'%wZ' (" IFMT_W L")", &ImagePath, Process);
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RtlInitUnicodeString(&usProcess, wcProcess);
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Info.Process = Process;
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Info.ProcessId = ProcessId;
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Info.usImagePath.Buffer = ImagePath.Buffer;
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Info.usImagePath.Length = ImagePath.Length;
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Info.usImagePath.MaximumLength = ImagePath.MaximumLength;
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// add process information into the list
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if (process_entry = LstAddEntry(m_ProcessesList, &usProcess, &Info, sizeof(Info)))
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{
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PLST_PROCESS_INFO pInfo = (PLST_PROCESS_INFO)process_entry->Data;
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Ret = &pInfo->usImagePath;
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}
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else
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{
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RtlFreeUnicodeString(&ImagePath);
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}
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}
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return Ret;
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}
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//--------------------------------------------------------------------------------------
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BOOLEAN ValidateUnicodeString(PUNICODE_STRING usStr)
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{
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ULONG i = 0;
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if (!MmIsAddressValid(usStr))
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{
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return FALSE;
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}
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if (usStr->Buffer == NULL || usStr->Length == 0)
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{
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return FALSE;
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}
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for (i = 0; i < usStr->Length; i++)
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{
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if (!MmIsAddressValid((PUCHAR)usStr->Buffer + i))
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{
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return FALSE;
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}
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}
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return TRUE;
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}
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//--------------------------------------------------------------------------------------
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NTSTATUS NTAPI new_NtDeviceIoControlFile(
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HANDLE FileHandle,
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HANDLE Event,
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PIO_APC_ROUTINE ApcRoutine,
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PVOID ApcContext,
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PIO_STATUS_BLOCK IoStatusBlock,
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ULONG IoControlCode,
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PVOID InputBuffer,
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ULONG InputBufferLength,
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PVOID OutputBuffer,
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ULONG OutputBufferLength)
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{
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KPROCESSOR_MODE PrevMode = ExGetPreviousMode();
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BOOLEAN bLogOutputBuffer = FALSE;
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NTSTATUS status = STATUS_UNSUCCESSFUL;
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POBJECT_NAME_INFORMATION DeviceObjectName = NULL, DriverObjectName = NULL;
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PFILE_OBJECT pFileObject = NULL;
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NTSTATUS ns = 0;
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BOOLEAN bProcessEvent = FALSE;
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LARGE_INTEGER Timeout;
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PVOID pDeviceObject = NULL;
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PLDR_DATA_TABLE_ENTRY pModuleEntry = NULL;
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PEPROCESS Process;
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HANDLE ProcessId;
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_InterlockedIncrement(&g_newDeviceIoControlFileCallCount);
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// get device object by handle
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ns = ObReferenceObjectByHandle(
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FileHandle,
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0, 0,
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KernelMode,
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(PVOID *)&pFileObject,
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NULL
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);
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if(!NT_SUCCESS(ns))
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goto end;
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// validate pointer to device object
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if (MmIsAddressValid(pFileObject->DeviceObject))
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{
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pDeviceObject = pFileObject->DeviceObject;
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}
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else
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{
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goto end;
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}
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if (pDeviceObject == m_DeviceObject)
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{
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// don't handle requests to our driver
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goto end;
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}
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// validate pointer to driver object
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if (!MmIsAddressValid(pFileObject->DeviceObject->DriverObject))
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{
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goto end;
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}
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// get loader information entry for the driver module
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pModuleEntry = (PLDR_DATA_TABLE_ENTRY)
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pFileObject->DeviceObject->DriverObject->DriverSection;
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if (pModuleEntry == NULL)
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{
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goto end;
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}
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// validate pointer to loader's table and data from it
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if (!MmIsAddressValid(pModuleEntry) ||
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!ValidateUnicodeString(&pModuleEntry->FullDllName))
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{
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goto end;
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}
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// get device name by poinet
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DeviceObjectName = GetObjectName(pDeviceObject);
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if(!DeviceObjectName)
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goto end;
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DriverObjectName = GetObjectName(pFileObject->DeviceObject->DriverObject);
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if(!DriverObjectName)
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goto end;
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Process = PsGetCurrentProcess();
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ProcessId = PsGetCurrentProcessId();
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Timeout.QuadPart = RELATIVE(SECONDS(5));
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ns = KeWaitForMutexObject(&m_CommonMutex, Executive, KernelMode, FALSE, &Timeout);
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if (ns == STATUS_TIMEOUT)
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{
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DbgMsg(__FILE__, __LINE__, __FUNCTION__"(): Wait timeout\n");
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goto end;
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}
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__try
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{
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PWSTR Methods[] =
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{
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L"METHOD_BUFFERED",
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L"METHOD_IN_DIRECT",
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L"METHOD_OUT_DIRECT",
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L"METHOD_NEITHER"
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};
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PWSTR lpwcMethod = Methods[IoControlCode & 3];
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char *lpszKdCommand = NULL;
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LARGE_INTEGER Time;
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// get process image path
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PUNICODE_STRING ProcessImagePath = LookupProcessName(NULL);
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if(!ProcessImagePath)
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__leave;
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KeQuerySystemTime(&Time);
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// get text name of the method
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currentDeviceObject = pFileObject->DeviceObject;
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currentDriverObject = pFileObject->DeviceObject->DriverObject;
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currentIoControlCode = IoControlCode;
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currentInputBuffer = InputBuffer;
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currentInputBufferLength = InputBufferLength;
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currentOutputBuffer = OutputBuffer;
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currentOutputBufferLength = OutputBufferLength;
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// if (m_FuzzOptions & FUZZ_OPT_LOG_IOCTL_GLOBAL)
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// {
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// // log IOCTL information into the global log
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// LogDataIoctls("timestamp=0x%.8x%.8x\r\n", Time.HighPart, Time.LowPart);
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// LogDataIoctls("process_id=%d\r\n", ProcessId);
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// LogDataIoctls("process_path=%wZ\r\n", ProcessImagePath);
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// LogDataIoctls("device=%wZ\r\n", &DeviceObjectName->Name);
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// LogDataIoctls("driver=%wZ\r\n", &DriverObjectName->Name);
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// LogDataIoctls("image_file=%wZ\r\n", &pModuleEntry->FullDllName);
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// LogDataIoctls("code=0x%.8x\r\n", IoControlCode);
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// LogDataIoctls("method=%ws\r\n", lpwcMethod);
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// LogDataIoctls("in_size=%d\r\n", InputBufferLength);
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// LogDataIoctls("out_size=%d\r\n", OutputBufferLength);
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// LogDataIoctls("\r\n");
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// }
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// get debugger command, that can be associated with this IOCTL
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lpszKdCommand = FltGetKdCommand(
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&DeviceObjectName->Name,
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&DriverObjectName->Name/*pModuleEntry->FullDllName*/,
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IoControlCode,
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ProcessImagePath
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);
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bProcessEvent = FltIsMatchedRequest(
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&DeviceObjectName->Name,
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&pModuleEntry->FullDllName,
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IoControlCode,
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ProcessImagePath
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);
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if ((bProcessEvent || lpszKdCommand) &&
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(m_FuzzOptions & FUZZ_OPT_LOG_IOCTL))
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{
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LogDataIoctls(
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"timestamp=0x%.8x%.8x\r\n \
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process_id=%d\r\n \
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process_path=%wZ\r\n \
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device=%wZ\r\n \
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driver=%wZ\r\n \
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image_file=%wZ\r\n \
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code=0x%.8x\r\n \
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method=%ws\r\n \
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in_size=%d\r\n \
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out_size=%d\r\n \
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\r\n",
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Time.HighPart, Time.LowPart,
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ProcessId,
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ProcessImagePath,
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&DeviceObjectName->Name,
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&DriverObjectName->Name,
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&pModuleEntry->FullDllName,
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IoControlCode,
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lpwcMethod,
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InputBufferLength,
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OutputBufferLength);
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if (m_FuzzOptions & FUZZ_OPT_LOG_IOCTL_BUFFERS)
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{
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// log output buffer information
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LogDataIoctls(" OutBuff: "IFMT", OutSize: 0x%.8x\r\n",
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OutputBuffer,
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OutputBufferLength);
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// log input buffer information
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LogDataIoctls(" InBuff: "IFMT", InSize: 0x%.8x\r\n",
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InputBuffer,
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InputBufferLength);
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// print input buffer contents
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LogDataIoctls("--------------------------------------------------------------------\r\n");
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LogDataHexdump((PUCHAR)InputBuffer, min(InputBufferLength, MAX_IOCTL_BUFFER_LEGTH));
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LogDataIoctls("\r\n");
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}
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}
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}
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__finally
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{
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KeReleaseMutex(&m_CommonMutex, FALSE);
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}
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end:
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if(pFileObject)
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ObDereferenceObject(pFileObject);
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if(DriverObjectName)
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ExFreePool(DriverObjectName);
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if(DeviceObjectName)
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ExFreePool(DeviceObjectName);
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// restore KTHREAD::PreviousMode
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SetPreviousMode(PrevMode);
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// call original function
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status = old_NtDeviceIoControlFile(
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FileHandle,
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Event,
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ApcRoutine,
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ApcContext,
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IoStatusBlock,
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IoControlCode,
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InputBuffer,
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InputBufferLength,
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OutputBuffer,
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OutputBufferLength
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);
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_InterlockedDecrement( &g_newDeviceIoControlFileCallCount );
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return status;
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}
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VOID WaitHookRemoveComplete()
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{
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LONG Count = 0;
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const LARGE_INTEGER WaitTime = {(ULONG)(-50 * 1000 * 10), -1};
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do
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{
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KeDelayExecutionThread( KernelMode , FALSE , (PLARGE_INTEGER)&WaitTime );
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_InterlockedExchange( &Count , g_newDeviceIoControlFileCallCount );
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} while (Count != 0 );
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return;
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}
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//--------------------------------------------------------------------------------------
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// EoF
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