[BATCH] Patch files by editing an offset's hex values

REM A script I made to patch LOTRC for certain mods.

@echo off
color 0a
setlocal

::Define your input for patching
set "EXE_FILE=Conquest.exe"
set "OFFSET=0x49F238"
set "NEW_HEX=C7 05 00 E2 A3 00 00 00 00 10" ::C7 05 00 E2 A3 00 00 00 A0 0A

::Create backup of file being patched
set "TIMESTAMP=%DATE:~10,4%%DATE:~4,2%%DATE:~7,2%_%TIME:~0,2%%TIME:~3,2%%TIME:~6,2%"
set "TIMESTAMP=%TIMESTAMP: =0%"  :: Replace space with 0 for time formatting
set "BACKUP_FILE=%EXE_FILE%.backup.%TIMESTAMP%"

::Catch error
echo Creating backup: %BACKUP_FILE%
copy /Y "%EXE_FILE%" "%BACKUP_FILE%" > nul
if errorlevel 1 (
    echo Failed to create backup. Aborting patch.
    exit /b 1
)

::Find offset and replace hex values
powershell -NoProfile -ExecutionPolicy Bypass -Command ^
  "$Path='%EXE_FILE%';" ^
  "$Offset=%OFFSET%;" ^
  "$Bytes='%NEW_HEX%'.Split(' ') | ForEach-Object { [Convert]::ToByte($_,16) };" ^
  "$fs=[System.IO.File]::Open($Path, 'Open', 'ReadWrite');" ^
  "$fs.Seek($Offset, 'Begin') > $null;" ^
  "$fs.Write($Bytes, 0, $Bytes.Length);" ^
  "$fs.Close();"

echo.
echo Patch has been applied successfully! You may now close this window or press any key.
pause > nul