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ASUS HID Access Service - 'AsHidSrv.exe' Unquoted Service Path

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# Exploit Title: ASUS HID Access Service - 'AsHidSrv.exe' Unquoted Service Path
# Date: 2020-05-19
# Exploit Author: Alejandra Sánchez
# Vendor Homepage: www.asus.com
# Version:
# Tested on: Windows 10 Pro x64 es

# Description:
ATK Hotkey suffers from an unquoted search path issue impacting the service 'AsHidService'. This could potentially allow an 
authorized but non-privileged local user to execute arbitrary code with elevated privileges on the system. A successful attempt would require 
the local user to be able to insert their code in the system root path undetected by the OS or other security applications where it could 
potentially be executed during application startup or reboot. If successful, the local user’s code would execute with the elevated privileges
of the application.

# Prerequisites
Local, Non-privileged Local User with restart capabilities

# Details

C:\>wmic service get name, pathname, displayname, startmode | findstr /i auto | findstr /i /v "C:\Windows\\" | findstr /i /v """
ASUS HID Access Service               AsHidService               C:\Program Files (x86)\ASUS\ATK Package\ATK Hotkey\AsHidSrv.exe               Auto

C:\>sc qc "AsHidService"
[SC] QueryServiceConfig CORRECTO

        TIPO               : 10  WIN32_OWN_PROCESS
        TIPO_INICIO        : 2   AUTO_START
        CONTROL_ERROR      : 1   NORMAL
        NOMBRE_RUTA_BINARIO: C:\Program Files (x86)\ASUS\ATK Package\ATK Hotkey\AsHidSrv.exe
        ETIQUETA           : 0
        NOMBRE_MOSTRAR     : ASUS HID Access Service
        DEPENDENCIAS       :
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