AtomicSyscall

Herramientas y PoCs para la investigación de syscalls de Windows.

Tabla de contenidos

AtomicSyscall

HeavensGate

Este directorio es para la técnica Heaven's Gate. Ver README.md

SyscallDumper

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Proyecto

Esta herramienta sirve para volcar syscalls de Windows desde ntdll.dll o win32u.dll:``` C:\Tools>SyscallDumper.exe -h

SyscallDumper - Tool to dump syscall.

Usage: SyscallDumper.exe [Options] [INPUT_DLL_1] [INPUT_DLL_2]

    -h, --help   : Displays this help message.
    -d, --dump   : Flag to dump syscall from ntdll.dll or win32u.dll.
    -D, --diff   : Flag to take diff between 2 dlls.
    -f, --format : Specifies output format. "c" for C/C++, "cs" for CSharp, "py" for Python.
    -n, --number : Specifies syscall number to lookup in decimal or hex format.
    -o, --output : Specifies output file (e.g. "-o result.txt").
    -s, --search : Specifies search filter (e.g. "-s createfile").
    INPUT_DLL_1  : Specifies path of ntdll.dll or win32u.dll. Older one in diffing.
    INPUT_DLL_2  : Specifies path of ntdll.dll or win32u.dll. Newer one in diffing.

Para volcar los números de syscall de ntdll.dll o win32u.dll, usa la opción `-d` (`--dump`).
Si no especificas el DLL de origen, esta herramienta vuelca los números de syscall de `C:\Windows\System32\ntdll.dll` y `C:\Windows\System32\win32u.dll`:```
C:\Tools>SyscallDumper.exe -d

[*] No target is specified.
[>] Dumping from system default ntdll.dll and win32u.dll.
[>] Loading C:\Windows\System32\ntdll.dll.
[+] C:\Windows\System32\ntdll.dll is loaded successfully.
    [*] Architecture : AMD64
    [*] Image Name   : ntdll.dll
[+] Got 463 syscall(s).
[>] Loading C:\Windows\System32\win32u.dll.
[+] C:\Windows\System32\win32u.dll is loaded successfully.
    [*] Architecture : AMD64
    [*] Image Name   : win32u.dll
[+] Got 1258 syscall(s).

[Syscall Table from C:\Windows\System32\ntdll.dll]

---------------------------------------------------------------------------------
| Syscall Name                                          | Number | Number (hex) |
---------------------------------------------------------------------------------
| NtAcceptConnectPort                                   | 2      | 0x0002       |
| NtAccessCheck                                         | 0      | 0x0000       |

--snip--

| NtWriteVirtualMemory                                  | 58     | 0x003A       |
| NtYieldExecution                                      | 70     | 0x0046       |
---------------------------------------------------------------------------------

[*] Found 463 syscall(s).


[Syscall Table from C:\Windows\System32\win32u.dll]

-----------------------------------------------------------------------------------
| Syscall Name                                            | Number | Number (hex) |
-----------------------------------------------------------------------------------
| NtBindCompositionSurface                                | 4373   | 0x1115       |
| NtCloseCompositionInputSink                             | 4374   | 0x1116       |

--snip--

| NtValidateCompositionSurfaceHandle                      | 5350   | 0x14E6       |
| NtVisualCaptureBits                                     | 5351   | 0x14E7       |
-----------------------------------------------------------------------------------

[*] Found 1258 syscall(s).

Si desea filtrar el nombre de la llamada al sistema del resultado del volcado, use la opción -s (--search). Y puede guardar el resultado en un archivo con la opción -o (--output) de la siguiente manera:``` C:\Tools>SyscallDumper.exe -d C:\SyscallSamples\1809x64\ntdll.dll -s token -o result.txt

[>] Loading C:\SyscallSamples\1809x64\ntdll.dll. [+] C:\SyscallSamples\1809x64\ntdll.dll is loaded successfully. [] Architecture : AMD64 [] Image Name : ntdll.dll [+] Got 462 syscall(s). [>] Trying to save results. [*] Output File Path : c:\Tools\result.txt [+] Results are saved successfully.

c:\Tools>type result.txt [Syscall Table from C:\SyscallSamples\1809x64\ntdll.dll]

| Syscall Name | Number | Number (hex) |

| NtAdjustGroupsToken | 107 | 0x006B | | NtAdjustPrivilegesToken | 65 | 0x0041 | | NtAdjustTokenClaimsAndDeviceGroups | 108 | 0x006C | | NtCompareTokens | 155 | 0x009B | | NtCreateLowBoxToken | 172 | 0x00AC | | NtCreateToken | 191 | 0x00BF | | NtCreateTokenEx | 192 | 0x00C0 | | NtDuplicateToken | 66 | 0x0042 | | NtFilterToken | 222 | 0x00DE | | NtFilterTokenEx | 223 | 0x00DF | | NtImpersonateAnonymousToken | 246 | 0x00F6 | | NtOpenProcessToken | 290 | 0x0122 | | NtOpenProcessTokenEx | 48 | 0x0030 | | NtOpenThreadToken | 36 | 0x0024 | | NtOpenThreadTokenEx | 47 | 0x002F | | NtQueryInformationToken | 33 | 0x0021 | | NtQuerySecurityAttributesToken | 339 | 0x0153 | | NtSetInformationToken | 404 | 0x0194 |

[] Found 18 syscall(s). [] Filter String : "token"

Usando la opción `-n` (`--number`), puede buscar el nombre de la syscall por su número de syscall de la siguiente manera.
Si desea especificar el número de syscall en formato hexadecimal, debe comenzar con "0x".```
C:\Tools>SyscallDumper.exe -d C:\dev\SyscallSamples\21H1x64\ntdll.dll -n 85

[>] Loading C:\dev\SyscallSamples\21H1x64\ntdll.dll.
[+] C:\dev\SyscallSamples\21H1x64\ntdll.dll is loaded successfully.
    [*] Architecture : AMD64
    [*] Image Name   : ntdll.dll
[+] Got 470 syscall(s).

[Syscall Table from C:\dev\SyscallSamples\21H1x64\ntdll.dll]

----------------------------------------
| Syscall Name | Number | Number (hex) |
----------------------------------------
| NtCreateFile | 85     | 0x0055       |
----------------------------------------

[*] Found 1 syscall(s).


C:\Tools>SyscallDumper.exe -d C:\dev\SyscallSamples\21H1x64\ntdll.dll -n 0x55

[>] Loading C:\dev\SyscallSamples\21H1x64\ntdll.dll.
[+] C:\dev\SyscallSamples\21H1x64\ntdll.dll is loaded successfully.
    [*] Architecture : AMD64
    [*] Image Name   : ntdll.dll
[+] Got 470 syscall(s).

[Syscall Table from C:\dev\SyscallSamples\21H1x64\ntdll.dll]

----------------------------------------
| Syscall Name | Number | Number (hex) |
----------------------------------------
| NtCreateFile | 85     | 0x0055       |
----------------------------------------

[*] Found 1 syscall(s).

Si quieres cambiar el formato de salida, usa la opción -f (--format). Actualmente, se admiten C/C++ (c), CSharp (cs) y Python (py):``` C:\Tools>SyscallDumper.exe -d C:\dev\SyscallSamples\Win11Arm64\ntdll-arm64.dll -f c

[>] Loading C:\dev\SyscallSamples\Win11Arm64\ntdll-arm64.dll. [+] C:\dev\SyscallSamples\Win11Arm64\ntdll-arm64.dll is loaded successfully. [] Architecture : ARM64 [] Image Name : ntdll.dll [+] Got 486 syscall(s).

[Syscall Table from C:\dev\SyscallSamples\Win11Arm64\ntdll-arm64.dll]

enum NT_SYSCALLS { NtAcceptConnectPort = 2, NtAccessCheck = 0, NtAccessCheckAndAuditAlarm = 41,

--snip--

NtWriteVirtualMemory = 58,
NtYieldExecution = 70

}

[*] Found 486 syscall(s).

C:\Tools>SyscallDumper.exe -d C:\dev\SyscallSamples\Win11Arm64\ntdll-arm64.dll -f cs

[Syscall Table from C:\dev\SyscallSamples\Win11Arm64\ntdll-arm64.dll]

public enum NT_SYSCALLS { NtAcceptConnectPort = 2, NtAccessCheck = 0, NtAccessCheckAndAuditAlarm = 41,

--snip--

NtWriteVirtualMemory = 58,
NtYieldExecution = 70

}

[*] Found 486 syscall(s).

C:\Tools>SyscallDumper.exe -d C:\dev\SyscallSamples\Win11Arm64\ntdll-arm64.dll -f py

[Syscall Table from C:\dev\SyscallSamples\Win11Arm64\ntdll-arm64.dll]

g_NtSyscalls = { "NtAcceptConnectPort": 2, "NtAccessCheck": 0, "NtAccessCheckAndAuditAlarm": 41, "NtAccessCheckByType": 99, "NtAccessCheckByTypeAndAuditAlarm": 89,

--snip--

Para tomar la diferencia entre las tablas de syscalls de 2 DLL, use la opción `-D` (`--diff`) de la siguiente manera:```
C:\Tools>SyscallDumper.exe -D C:\dev\SyscallSamples\1809x64\win32u.dll C:\dev\SyscallSamples\1903x64\win32u.dll

[>] Trying to take diff.
    [*] Old File : C:\dev\SyscallSamples\1809x64\win32u.dll
    [*] New File : C:\dev\SyscallSamples\1903x64\win32u.dll
[>] Loading C:\dev\SyscallSamples\1809x64\win32u.dll.
[+] C:\dev\SyscallSamples\1809x64\win32u.dll is loaded successfully.
    [*] Architecture : AMD64
    [*] Image Name   : win32u.dll
[+] Got 1242 syscall(s).
[>] Loading C:\dev\SyscallSamples\1903x64\win32u.dll.
[+] C:\dev\SyscallSamples\1903x64\win32u.dll is loaded successfully.
    [*] Architecture : AMD64
    [*] Image Name   : win32u.dll
[+] Got 1258 syscall(s).

################################################
#               DELETED SYSCALLS               #
################################################

-------------------------------------------------------------------
| Syscall Name                            | Number | Number (hex) |
-------------------------------------------------------------------
| NtDCompositionCreateSharedVisualHandle  | 4391   | 0x1127       |
| NtGdiDdDDINetDispStopSessions           | 4608   | 0x1200       |
| NtGdiDdDDISetDisplayPrivateDriverFormat | 4664   | 0x1238       |
| NtMITCoreMsgKGetConnectionHandle        | 4907   | 0x132B       |
| NtMITCoreMsgKSend                       | 4909   | 0x132D       |
| NtMITSynthesizeMouseWheel               | 4919   | 0x1337       |
| NtMITWaitForMultipleObjectsEx           | 4922   | 0x133A       |
| NtUserGetPointerFrameArrivalTimes       | 5105   | 0x13F1       |
-------------------------------------------------------------------

[*] Deleted 8 syscall(s).


################################################
#               MODIFIED SYSCALLS              #
################################################

----------------------------------------------------------------------------------------
| Syscall Name                                       | Number       | Number (hex)     |
----------------------------------------------------------------------------------------
| NtDxgkEndTrackedWorkload                           | 4435 -> 4436 | 0x1153 -> 0x1154 |
| NtDxgkGetAvailableTrackedWorkloadIndex             | 4436 -> 4437 | 0x1154 -> 0x1155 |

--snip--

| NtValidateCompositionSurfaceHandle                 | 5334 -> 5350 | 0x14D6 -> 0x14E6 |
| NtVisualCaptureBits                                | 5335 -> 5351 | 0x14D7 -> 0x14E7 |
----------------------------------------------------------------------------------------

[*] Modified 623 syscall(s).


################################################
#                 NEW SYSCALLS                 #
################################################

-----------------------------------------------------------------------------------
| Syscall Name                                            | Number | Number (hex) |
-----------------------------------------------------------------------------------
| NtDCompositionCreateSharedResourceHandle                | 4391   | 0x1127       |
| NtDxgkDispMgrOperation                                  | 4435   | 0x1153       |

--snip--

| NtUserSetMagnificationDesktopMagnifierOffsetsDWMUpdated | 5283   | 0x14A3       |
| NtUserSetProcessMousewheelRoutingMode                   | 5293   | 0x14AD       |
-----------------------------------------------------------------------------------

[*] Added 24 syscall(s).

SyscallPoCs

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Proyecto

El propósito de este proyecto es investigar cómo los atacantes resuelven y ejecutan syscalls de Windows. Todos los PoCs intentan enumerar los módulos del kernel mediante el syscall NtQuerySystemInformation.

SyscallResolvers

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Proyecto

El propósito de este proyecto es ayudar a aprender cómo funcionan las técnicas de resolución de números de syscall en memoria:

La siguiente figura muestra la diferencia entre Hell's Gate y Halo's Gate en un entorno con software antivirus instalado. La técnica Hell's Gate no funciona para la función NtCreateProcessEx parcheada. Por otro lado, la técnica Halo's Gate sí funciona para la función NtCreateProcessEx parcheada:

En algunas máquinas con software antivirus instalado, parte del código de ntdll.dll está hookeado como se muestra en la siguiente salida del depurador:``` 0:001> u ntdll!ntcreateprocessex ntdll!NtCreateProcessEx: 00007fffb33ef700 e9930a1800 jmp 00007fffb3570198 00007fffb33ef705 cc int 3 00007fffb33ef706 cc int 3 00007fffb33ef707 cc int 3 00007fffb33ef708 f604250803fe7f01 test byte ptr [SharedUserData+0x308 (000000007ffe0308)],1 00007fffb33ef710 7503 jne ntdll!NtCreateProcessEx+0x15 (00007fffb33ef715) 00007fffb33ef712 0f05 syscall 00007fff`b33ef714 c3 ret

Pero el proceso creado por `NtCreateUserProcess` o `NtCreateProcessEx` solo carga ntdll.dll sin hookear en su estado inicial.
Podemos confirmarlo escaneando la memoria del proceso inicial suspendido.
Un proceso suspendido no se puede adjuntar a un depurador, así que escribí una pequeña herramienta [ProcMemScan](https://github.com/daem0nc0re/TangledWinExec/tree/main/ProcMemScan).
Para probarlo, implementé la opción `-d` que puede pausar el proceso inicial en el InitialProcessResolver después de la detección del número de syscall:```
PS C:\Dev> .\InitialProcessResolver.exe -n ntcreateprocessex -d

[>] Trying to create initial process.
[+] Initial process is created successfully.
    [*] Process Name : svchost
    [*] Process ID   : 1336
[>] Trying to dump Nt API address.
[*] ntdll.dll @ 0x00007FFFB3350000
[+] Got 491 entries (Architecure: AMD64).
[+] NtCreateProcessEx @ 0x00007FFFB33EF700
[+] Syscall number for NtCreateProcessEx is 77 (0x4D).
[*] Debug break. To exit this program, hit [ENTER] key.

Podemos confirmar que el número de syscall para NtCreateProcessEx es 77 a partir de la salida, y el proceso svchost creado por InitialProcessResolver es 1336. Al escanear este svchost con ProcMemScan, podemos ver que el proceso svchost carga solo ntdll.dll de la siguiente manera:``` PS C:\Dev> .\ProcMemScan.exe -p 1336 -l

[>] Trying to get target process memory information. [*] Target process is 'svchost' (PID : 1336). [+] Got target process memory information.

          Base           Size State       Protect                    Type        Mapped

0x0000000000000000 0x000000007FFE0000 0x000000007FFE1000 0x000000007FFED000 0x000000007FFEE000 0x000000BD69C00000 0x000000BD69C28000 0x000000BD69C2B000 0x000000BD69E00000 0x000000BD69E79000 0x000000BD69E7C000 0x000000BD69E80000 0x00000203669F0000 0x0000020366A10000 0x0000020366A2F000 0x00007DF530790000 0x00007DF530791000 0x00007DF5307A0000 0x00007DF5307A1000 0x00007DF5307B0000 0x00007DF532417000 0x00007DF532419000 0x00007DF53257E000 0x00007DF53257F000 0x00007FED053CE000 0x00007FED053CF000 0x00007FF50F00C000 0x00007FF50F00E000 0x00007FF52E057000 0x00007FF52F47D000 0x00007FF52F486000 0x00007FF5307B0000 0x00007FF7A1730000 0x00007FF7A1731000 0x00007FF7A1738000 0x00007FF7A173C000 0x00007FF7A173D000 0x00007FF7A173E000 0x00007FF7A173F000 0x00007FF7A1741000 0x00007FFFB3350000 0x00007FFFB3351000 0x00007FFFB3481000 0x00007FFFB34CE000 0x00007FFFB34DA000 0x00007FFFB34E9000 0x00007FFFB34EA000 0x00007FFFB34ED000 0x00007FFFB3564000 0x7FFE0000 MEM_FREE PAGE_NOACCESS NONE N/A 0x1000 MEM_COMMIT PAGE_READONLY MEM_PRIVATE N/A 0xC000 MEM_FREE PAGE_NOACCESS NONE N/A 0x1000 MEM_COMMIT PAGE_READONLY MEM_PRIVATE N/A 0xBCE9C12000 MEM_FREE PAGE_NOACCESS NONE N/A 0x28000 MEM_RESERVE NONE MEM_PRIVATE N/A 0x3000 MEM_COMMIT PAGE_READWRITE MEM_PRIVATE N/A 0x1D5000 MEM_RESERVE NONE MEM_PRIVATE N/A 0x79000 MEM_RESERVE NONE MEM_PRIVATE N/A 0x3000 MEM_COMMIT PAGE_READWRITE, PAGE_GUARD MEM_PRIVATE N/A 0x4000 MEM_COMMIT PAGE_READWRITE MEM_PRIVATE N/A 0x145FCB70000 MEM_FREE PAGE_NOACCESS NONE N/A 0x20000 MEM_COMMIT PAGE_READWRITE MEM_PRIVATE N/A 0x1F000 MEM_COMMIT PAGE_READONLY MEM_MAPPED N/A 0x7BF1C9D61000 MEM_FREE PAGE_NOACCESS NONE N/A 0x1000 MEM_COMMIT PAGE_EXECUTE_READ MEM_PRIVATE N/A 0xF000 MEM_FREE PAGE_NOACCESS NONE N/A 0x1000 MEM_COMMIT PAGE_READONLY MEM_MAPPED N/A 0xF000 MEM_FREE PAGE_NOACCESS NONE N/A 0x1C67000 MEM_RESERVE NONE MEM_MAPPED N/A 0x2000 MEM_COMMIT PAGE_NOACCESS MEM_MAPPED N/A 0x165000 MEM_RESERVE NONE MEM_MAPPED N/A 0x1000 MEM_COMMIT PAGE_NOACCESS MEM_MAPPED N/A 0x1F7D2E4F000 MEM_RESERVE NONE MEM_MAPPED N/A 0x1000 MEM_COMMIT PAGE_READONLY MEM_MAPPED N/A 0x809C3D000 MEM_RESERVE NONE MEM_MAPPED N/A 0x2000 MEM_COMMIT PAGE_READONLY MEM_MAPPED N/A 0x1F049000 MEM_RESERVE NONE MEM_MAPPED N/A 0x1426000 MEM_COMMIT PAGE_NOACCESS MEM_MAPPED N/A 0x9000 MEM_COMMIT PAGE_READONLY MEM_MAPPED N/A 0x132A000 MEM_RESERVE NONE MEM_MAPPED N/A 0x270F80000 MEM_FREE PAGE_NOACCESS NONE N/A 0x1000 MEM_COMMIT PAGE_READONLY MEM_IMAGE C:\Windows\System32\svchost.exe 0x7000 MEM_COMMIT PAGE_EXECUTE_READ MEM_IMAGE C:\Windows\System32\svchost.exe 0x4000 MEM_COMMIT PAGE_READONLY MEM_IMAGE C:\Windows\System32\svchost.exe 0x1000 MEM_COMMIT PAGE_WRITECOPY MEM_IMAGE C:\Windows\System32\svchost.exe 0x1000 MEM_COMMIT PAGE_READONLY MEM_IMAGE C:\Windows\System32\svchost.exe 0x1000 MEM_COMMIT PAGE_WRITECOPY MEM_IMAGE C:\Windows\System32\svchost.exe 0x2000 MEM_COMMIT PAGE_READONLY MEM_IMAGE C:\Windows\System32\svchost.exe 0x811C0F000 MEM_FREE PAGE_NOACCESS NONE N/A 0x1000 MEM_COMMIT PAGE_READONLY MEM_IMAGE C:\Windows\System32\ntdll.dll 0x130000 MEM_COMMIT PAGE_EXECUTE_READ MEM_IMAGE C:\Windows\System32\ntdll.dll 0x4D000 MEM_COMMIT PAGE_READONLY MEM_IMAGE C:\Windows\System32\ntdll.dll 0xC000 MEM_COMMIT PAGE_WRITECOPY MEM_IMAGE C:\Windows\System32\ntdll.dll 0xF000 MEM_COMMIT PAGE_READONLY MEM_IMAGE C:\Windows\System32\ntdll.dll 0x1000 MEM_COMMIT PAGE_READWRITE MEM_IMAGE C:\Windows\System32\ntdll.dll 0x3000 MEM_COMMIT PAGE_WRITECOPY MEM_IMAGE C:\Windows\System32\ntdll.dll 0x77000 MEM_COMMIT PAGE_READONLY MEM_IMAGE C:\Windows\System32\ntdll.dll 0x4CA8C000 MEM_FREE PAGE_NOACCESS NONE N/A

[*] Completed.

PS C:\Dev>

Y el código de `NtCreateProcessEx` no está enganchado:```
PS C:\Dev> .\ProcMemScan.exe -p 1336 -d -b 0x00007FFFB33EF700 -r 20

[>] Trying to dump target process memory.
[*] Target process is 'svchost' (PID : 1336).
[+] Got target process memory.
    [*] BaseAddress       : 0x00007FFFB33EF000
    [*] AllocationBase    : 0x00007FFFB3350000
    [*] RegionSize        : 0x92000
    [*] AllocationProtect : PAGE_EXECUTE_WRITECOPY
    [*] State             : MEM_COMMIT
    [*] Protect           : PAGE_EXECUTE_READ
    [*] Type              : MEM_IMAGE
    [*] Mapped File Path  : C:\Windows\System32\ntdll.dll
    [*] Hexdump (0x20 Bytes):

                           00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

        00007FFFB33EF700 | 4C 8B D1 B8 4D 00 00 00-F6 04 25 08 03 FE 7F 01 | L.Ñ,M... ö.%.._..
        00007FFFB33EF710 | 75 03 0F 05 C3 CD 2E C3-0F 1F 84 00 00 00 00 00 | u...AI.A ........


[*] Completed.

PS C:\Dev>

Get-SyscallNumber.ps1

Volver al inicio

Script

En este script se implementan las siguientes 3 funciones:

Get-ModuleHandle : Como su nombre indica, esta función resuelve la dirección base del módulo cargado, al igual que la API GetModuleHandle.
Get-ProcAddress : Como su nombre indica, esta función resuelve la dirección de la función exportada, al igual que la API GetProcAddress.
Get-SyscallNumber : Esta función resuelve el número de syscall con la técnica Hell's Gate o Halo's Gate.

Si desea resolver la dirección base de un módulo como ntdll.dll, establezca el nombre del módulo como primer argumento o con la opción -ModuleName:``` PS C:> Import-Module C:\dev\Get-SyscallNumber.ps1 PS C:> Get-ModuleHandle ntdll.dll 140720055189504 PS C:> (140720055189504).ToString("X16") 00007FFBF0E70000 PS C:> Get-ModuleHandle -ModuleName kernel32.dll 140720022028288 PS C:> (140720022028288).ToString("X16") 00007FFBEEED0000 PS C:>

Para resolver la dirección de una función de exportación en un módulo, establezca la dirección base del módulo y el nombre de la función de exportación para la función `Get-ProcAddress`.
La dirección base del módulo debe especificarse con el 1er argumento o la opción `-Module`.
El nombre de la función de exportación debe especificarse con el 2º argumento o la opción `-ProcName` de la siguiente manera:```
PS C:\> $ntdll = Get-ModuleHandle -ModuleName ntdll.dll
PS C:\> Get-ProcAddress $ntdll NtCreateToken
140720055839008
PS C:\> (140720055839008).ToString("X16")
00007FFBF0F0E920
PS C:\> Get-ProcAddress -ProcName ntcreatetoken -Module $ntdll
140720055839008
PS C:\>

Si quieres conocer el número de syscall, establece el nombre de syscall como primer argumento o usa la opción -SyscallName para la función Get-SyscallNumber:``` PS C:> Get-SyscallNumber ntcreateuserprocess Syscall Number : 0xC8 200 PS C:> Get-SyscallNumber -SyscallName ntcreateprocessex Syscall Number : 0x4D 77 PS C:>

![getsyscallnumber.png](https://assets.kitploit.com/production/public/readmes/47889/69eabff97f4b9a8ce6562654c3f7014317bd25f0003f16eb2e7882e05ffff624.png)


## Referencias

[Volver al inicio](#atomicsyscall)

### Fundamentos

* [https://jhalon.github.io/utilizing-syscalls-in-csharp-1/](https://jhalon.github.io/utilizing-syscalls-in-csharp-1/)

* [https://jhalon.github.io/utilizing-syscalls-in-csharp-2/](https://jhalon.github.io/utilizing-syscalls-in-csharp-2/)

* [https://github.com/jhalon/SharpCall](https://github.com/jhalon/SharpCall)

### Heaven's Gate
* [https://wbenny.github.io/2018/11/04/wow64-internals.html](https://wbenny.github.io/2018/11/04/wow64-internals.html)

* [https://medium.com/@fsx30/hooking-heavens-gate-a-wow64-hooking-technique-5235e1aeed73](https://medium.com/@fsx30/hooking-heavens-gate-a-wow64-hooking-technique-5235e1aeed73)

* [https://mark.rxmsolutions.com/through-the-heavens-gate/](https://mark.rxmsolutions.com/through-the-heavens-gate/)

* [https://speakerdeck.com/aaaddress1/rebuild-the-heavens-gate-from-32-bit-hell-back-to-heaven-wonderland](https://speakerdeck.com/aaaddress1/rebuild-the-heavens-gate-from-32-bit-hell-back-to-heaven-wonderland)

* [http://blog.rewolf.pl/blog/?p=102](http://blog.rewolf.pl/blog/?p=102)

* [https://www.mandiant.com/resources/blog/wow64-subsystem-internals-and-hooking-techniques](https://www.mandiant.com/resources/blog/wow64-subsystem-internals-and-hooking-techniques)

* [https://www.malwaretech.com/2014/02/the-0x33-segment-selector-heavens-gate.html](https://www.malwaretech.com/2014/02/the-0x33-segment-selector-heavens-gate.html)

* [https://int0h.wordpress.com/2009/12/24/the-power-of-wow64/](https://int0h.wordpress.com/2009/12/24/the-power-of-wow64/)

* [https://modexp.wordpress.com/2015/11/19/dllpic-injection-on-windows-from-wow64-process/](https://modexp.wordpress.com/2015/11/19/dllpic-injection-on-windows-from-wow64-process/)

### Hell's Gate

* [https://vxug.fakedoma.in/papers/VXUG/Exclusive/HellsGate.pdf](https://vxug.fakedoma.in/papers/VXUG/Exclusive/HellsGate.pdf)

* [https://github.com/am0nsec/HellsGate](https://github.com/am0nsec/HellsGate)


### Halo's Gate

* [https://blog.sektor7.net/#!res/2021/halosgate.md](https://blog.sektor7.net/#!res/2021/halosgate.md)


### Agradecimientos

[Volver al inicio](#atomicsyscall)

Gracias por su investigación y sus entradas de blog:

* Paul Laîné ([@am0nsec](https://twitter.com/am0nsec))

* smelly__vx ([@smelly__vx](https://twitter.com/smelly__vx))

* reenz0h ([@sektor7net](https://twitter.com/sektor7net))

* Jack Halon ([@jack_halon](https://twitter.com/jack_halon))

PhysicalResolvePoC	Este PoC simplemente resuelve los números de syscall de `NtQuerySystemInformation` desde `C:\Windows\System32\ntdll.dll`.
HellsGatePoC	Este PoC resuelve los números de syscall de `NtQuerySystemInformation` mediante la técnica Hell's Gate.
HalosGatePoC	Este PoC resuelve los números de syscall de `NtQuerySystemInformation` mediante la técnica Halo's Gate.

HellsGateResolver	Este PoC resuelve los números de syscall en ntdll.dll mediante la técnica Hell's Gate. No funciona para funciones parcheadas con productos antivirus.
HalosGateResolver	Este PoC resuelve los números de syscall en ntdll.dll mediante la técnica Halo's Gate.
InitialProcessResolver	Este PoC resuelve los números de syscall en ntdll.dll desde el proceso inicial creado por `NtCreateUserProcess`.
KnownDllsResolver	Este PoC resuelve los números de syscall en ntdll.dll con `\KnownDlls\ntdll.dll`.

AtomicSyscall

Más Populares

AtomicSyscall

Tabla de contenidos

HeavensGate

SyscallDumper

| Syscall Name | Number | Number (hex) |

SyscallPoCs

SyscallResolvers

Get-SyscallNumber.ps1