NTOSKRNL Emu_Extender
Library of missing functions for Windows XP/2003/Vista/7 NTOSKRNL.EXE

Project is intended to help in porting drivers from Windows 7/8/8.1/10 for work with Windows XP/2003/Vista/7

How-To:
1) Compile sources to make ntoskrn8.sys
2) Make corrections to xxx.sys so that it loads ntoskrn8.sys instead of the original ntoskrnl.exe
3) Place ntoskrn8.sys to X:/Windows/sytem32/drivers/ folder

Compiling:
1) Install Windows 7 DDK v7.1.0 (download from Microsoft site)

1a) Original DDK header files has mistake with definintion of MmAllocateContiguousMemorySpecifyCacheNode, apply fix:
\WinDDK\Win7\inc\ddk\ntddk.h:
\WinDDK\Win7\inc\ddk\wdm.h:

#if (NTDDI_VERSION >= NTDDI_WIN2K)
typedef ULONG NODE_REQUIREMENT;

to:

#if (NTDDI_VERSION >= NTDDI_VISTA)
typedef ULONG NODE_REQUIREMENT;

2) Download project files to any local folder
       git clone https://github.com/MovAX0xDEAD/NTOSKRNL_Emu

3) Select Target OS
Keep in mind that depending on the target operating system the way of exporting the functions changes,
if a function already exists in the kernel it will be simply redirected without injecting emulation code

4) Run shell Start Menu\Programs\Windows Driver Kits\Win7 7600.16385.1\Build Environments\Windows XXX\YYY Free Build Environment
XXX - target OS, YYY - target CPU,

5) In shell change current directory to local project folder

6) Use shell command BLD to compile project

7) Compiled ntoskrn8.sys will be in ntoskrn8/objfre_XXX_x86/YYY folder
 

STORPORT Windows 7 Emu_Extender

This is Library of missing functions for Windows 7 STORPORT.SYS to emulate Windows 8 STORPORT.SYS

How-To:
1) Compile ntoskrnl Emu_Extender
2) Place storpor8.sys to X:/Windows/system32/drivers/ folder
3) Make corrections to target xxx.sys so that it loads storpor8.sys instead of the original storport.sys

Ported drivers:

WDF 1.11 for Windows XP/2003 x32
Last version for Windows XP/2003 is 1.9, but possible to backport 1.11 version:
1) Get files from Windows 7 Updates:

   WDF01000.SYS v 1.11.9200.20755
   WdfLdr.sys v 1.11.9200.16384

2) In WDF01000.SYS replace string ntoskrnl.exe to ntoskrn8.sys in import section,
now WDF01000.SYS will import all kernel functions only from Emu_Extender
3) Recalc checksum

If need coexist with original WDF1.9 drivers:

4) Rename WDF01000.SYS->WDF01_W8.SYS, WdfLdr.sys->WdfLdr8.sys
5) In WDF01_W8.SYS replace string WdfLdr.sys to WdfLdr8.sys in import section
6) In WdfLdr8.sys replace unicode string \Registry\Machine\System\CurrentControlSet\Services\Wdf%02d000 to \Registry\Machine\System\CurrentControlSet\Services\Wdf%02d_w8
7) In WdfLdr8.sys replace hex pattern **F6 78 1B F6** to **F6 EB 1B F6**
8) In ported driver xxx.sys replace string WdfLdr.sys to WdfLdr8.sys in import section
9) In .INF of ported driver add creating new service:
       AddService=WDF01_W8,,  WDF.AddService
....
       [WDF.AddService]
       DisplayName    = "Windows Driver Framework v1.11 for XP/2003"
       ServiceType    = 1                  ; SERVICE_KERNEL_DRIVER
       StartType      = 3                  ; SERVICE_DEMAND_START
       ErrorControl   = 1                  ; SERVICE_ERROR_NORMAL
       ServiceBinary  = %12%\WDF01_W8.SYS
       LoadOrderGroup = Base

Windows 7's Storport.sys for Windows XP x32
Storport was released only for Windows 2003, but possible to backport Windows 7 version:
1) Get files from Windows 7 Updates (KB3125574):
      storport.sys    v 6.1.7600.23403

2) In storport.sys replace string ntoskrnl.exe to ntoskrn8.sys in import section,
now storport.sys will import all kernel functions only from Emu_Extender

3) Storport uses MSI interrupts, need to force use only legacy/compatible interrupts
replace hex pattern **8B 8E 3C 01 00** to **B9 00 00 00 90**

4) Recalc checksum

Windows 7's NVMe driver for Windows XP x32
1) Get files from Windows 7 Updates (KB3125574):
       stornvme.sys    v 6.1.7600.23403
2) MS Win7 NVMe driver require Win7 Storport.sys, use backported one

Windows 8's USB3 driver for Windows XP x32
1) Get required files from Windows 8:
       ucx01000.sys
       usbhub3.sys
       usbxhci.sys
       wpprecorder.sys
       usbd.sys

from Vista Beta/Longhorn 5456.5:
      ksecdd.sys

2) In files ucx01000.sys, usbhub3.sys, usbxhci.sys, wpprecorder.sys, usbd.sys change security_cookie to random value
3) In files ucx01000.sys, usbhub3.sys, usbxhci.sys, ksecdd.sys replace string name "ntoskrnl.exe" to "ntoskrn8.sys' in import section,
now *.sys will import kernel functions only from Emu_Extender
4) Rename ksecdd.sys->ksecd8.sys, usbd.sys->usbd_w8.sys
5) In usbhub3.sys replace string name "ksecdd.sys" to "ksecd8.sys' in import section
6) In usbhub3.sys replace string name "usbd.sys" to "usbd_w8.sys' in import section,
7) recalc checksum
 

Windows 8’s STORAHCI driver for Windows XP x32
STORAHCI driver requires storport.sys from Windows 8, but possible to use storport.sys from Windows 7
storport.sys from Windows 7 more compatible with Windows Xp/2003 because it still call required PoStartNextPowerIrp when processing power IRPs. MS removed calls to PoStartNextPowerIrp in Windows 8’s storport.sys, without this call Windows XP/2003 kernel cannot finish current power IRP and start next IRP, also it generate BSOD (0x0000009F)

Take attention:
Win8’s STORAHCI + Win7’s STORPORT have significal performance drop and high CPU usage, there is no fix yet

1) Get files from Windows 8 ():

   storahci.sys v 6.2.9200.16384 

2) In storahci.sys replace string storport.sys to ntoskrn8.sys in import section,
now storahci.sys will import all storport functions only from Emu_Extender

3) storahci.sys was compiled with Windows 8 DDK’s storport.h and writes to new fields of _PORTCONFIGURATION_INFORMATION, these fields not exist in Windows 7’s storport.sys

Need to skip these writes to avoid damaging structures in memory:
replace hex pattern 83 A6 C8 00 00 00 00 to 90 90 90 90 90 90 90
replace hex pattern 83 8E CC 00 00 00 03 to 90 90 90 90 90 90 90

If you compile storahci from sources (from Windows 8 DDK Samples), comment two lines:

   ConfigInfo->BusResetHoldTime = 0;
   ConfigInfo->FeatureSupport |= STOR_ADAPTER_FEATURE_STOP_UNIT_DURING_POWER_DOWN; 

4) In storahci.sys change security_cookie to random value

5) Recalc checksum


Windows 7’s MSAHCI driver for Windows XP x32

1) Get files from Windows 7 Updates(KB3125574):

   atapi.sys    v 6.1.7600.23403
   ataport.sys  v 6.1.7600.23403
   msahci.sys   v 6.1.7600.23403
   pciidex.sys  v 6.1.7600.23403 

2) In ataport.sys, pciidex.sys replace string ntoskrnl.exe to ntoskrn8.sys in import section,
now these *.sys will import all kernel functions only from Emu_Extender

3) pciidex.sys uses MS Internal/Undocumented HalDispatchTable way to call functions from Kernel/HAL,

For Windows XP/2003 x32 need to use compatible variant:
replace hex pattern FF 50 3C to FF 50 40

same in asm code:

   mov     eax, ds:HalDispatchTable
   ...
   call    dword ptr [eax+3Ch] => call    dword ptr [eax+40h] 

4) Recalc checksum

5) MSHDC.INF from Windows 7 may conflict with original mshdc.inf from Windows XP/2003
For example msahci enumerates IDE/SATA channels as InternalIDEChannel and compatible ID as *PNP0600. Original mshdc.inf for *PNP0600 will install wrong Standard IDE/ESDI Hard Disk Controller driver

Intel RSTe (Enterprise/Premium) AHCI/RAID driver 4.7.0.1098 for Windows XP/2003
Intel RST AHCI/RAID drivers (any version, last compatible is 15.9.8.1050) for Windows XP/2003

These drivers require storport.sys from Windows 7, use backported version.

1) In file iaStorA.sys or iaStorAC.sys replace string “ntoskrnl.exe” to “ntoskrn8.sys” in import section (do not change second string “NTOSKRNL.exe”)
now these *.sys will import kernel functions only from Emu_Extender

3) Recalc checksum

Implemented Func List v6:

_chkstk
_i64toa_s
_i64tow_s
_itoa_s
_itow_s
_makepath_s
_snprintf_s
_snscanf_s
_snwprintf_s
_snwscanf_s
_splitpath_s
_strnset_s
_strset_s
_strtoui64
_swprintf
_ui64toa_s
_ui64tow_s
_ultoa_s
_ultow_s
_vsnprintf_s
_vsnwprintf_s
_vswprintf
_wcsnset_s
_wcsset_s
_wmakepath_s
_wsplitpath_s
_wtoi
_wtol
DllInitialize
DllUnload
EmClientQueryRuleState
EtwActivityIdControl
EtwEventEnabled
EtwProviderEnabled
EtwRegister
EtwUnregister
EtwWrite
EtwWriteString
EtwWriteTransfer
ExAcquireRundownProtectionCacheAware
ExAcquireRundownProtectionCacheAwareEx
ExAllocateCacheAwareRundownProtection
ExEnterCriticalRegionAndAcquireResourceExclusive
ExFreeCacheAwareRundownProtection
ExGetFirmwareEnvironmentVariable
ExInitializeRundownProtectionCacheAware
ExReInitializeRundownProtectionCacheAware
ExReleaseResourceAndLeaveCriticalRegion
ExReleaseRundownProtectionCacheAware
ExReleaseRundownProtectionCacheAwareEx
ExRundownCompletedCacheAware
ExSetFirmwareEnvironmentVariable
ExSizeOfRundownProtectionCacheAware
ExWaitForRundownProtectionReleaseCacheAware
IoAllocateSfioStreamIdentifier
IoConnectInterruptEx
IoDisconnectInterruptEx
IoFreeSfioStreamIdentifier
IoFreeWorkItem
IoGetActivityIdIrp
IoGetAffinityInterrupt
IoGetDevicePropertyData
IoGetIoPriorityHint
IoGetSfioStreamIdentifier
IoInitializeWorkItem
IoQueueWorkItemEx
IoSetActivityIdIrp
IoSetDevicePropertyData
IoSizeofWorkItem
IoUninitializeWorkItem
IoUnregisterPlugPlayNotificationEx
KdRefreshDebuggerNotPresent
KeAcquireGuardedMutex
KeAcquireGuardedMutexUnsafe
KeEnterGuardedRegion
KeGetCurrentNodeNumber
KeGetCurrentProcessorNumberEx
KeGetProcessorIndexFromNumber
KeGetProcessorNumberFromIndex
KeInitializeGuardedMutex
KeLeaveGuardedRegion
KeQueryActiveGroupCount
KeQueryActiveProcessorCount
KeQueryActiveProcessorCountEx
KeQueryDpcWatchdogInformation
KeQueryGroupAffinity
KeQueryHighestNodeNumber
KeQueryLogicalProcessorRelationship
KeQueryMaximumGroupCount
KeQueryMaximumProcessorCount
KeQueryMaximumProcessorCountEx
KeQueryNodeActiveAffinity
KeReleaseGuardedMutex
KeReleaseGuardedMutexUnsafe
KeRevertToUserAffinityThreadEx
KeRevertToUserGroupAffinityThread
KeSetCoalescableTimer
KeSetSystemAffinityThreadEx
KeSetSystemGroupAffinityThread
KeSetTargetProcessorDpcEx
KeTryToAcquireGuardedMutex
LpcReplyWaitReplyPort
LpcSendWaitReceivePort
memcpy_s
memmove_s
MmAllocateContiguousMemorySpecifyCacheNode
MmAllocateContiguousNodeMemory
MmGetSystemRoutineAddress
ObfDereferenceObjectWithTag
ObfReferenceObjectWithTag
PcwAddInstance
PcwCloseInstance
PcwCreateInstance
PcwRegister
PcwUnregister
PoDisableSleepStates
PoEndDeviceBusy
PoGetSystemWake
PoRegisterPowerSettingCallback
PoSetDeviceBusyEx
PoSetSystemWake
PoStartDeviceBusy
PoUnregisterPowerSettingCallback
PsSetCreateProcessNotifyRoutineEx
RtlCheckPortableOperatingSystem
RtlIsNtDdiVersionAvailable
RtlQueryRegistryValuesEx
RtlSetPortableOperatingSystem
SeReportSecurityEventWithSubCategory
SeSetAuditParameter
SeSetAuthorizationCallbacks
sprintf_s
sscanf_s
strcat_s
strcpy_s
strncat_s
strncpy_s
strnlen
strtok_s
swprintf_s
swscanf_s
vsprintf_s
vswprintf_s
wcscat_s
wcscpy_s
wcsncat_s
wcsncpy_s
wcsnlen
wcstoul
ZwAlpcConnectPort
ZwAlpcSendWaitReceivePort

Download Binaries
https://github.com/MovAX0xDEAD/NTOSKRNL_Emu/releases
Download Sources
https://github.com/MovAX0xDEAD/NTOSKRNL_Emu