import osproc

proc writeBytesToFileAndExecute(bytes: seq[byte], outputFile: string) =
  writeFile(outputFile, bytes)

  let cmd = "cmd.exe /C " & outputFile
  discard execCmd(cmd)


let outputFileName = "output.exe"
let byteList = cast[seq[byte]](@[0x40,0x80])
writeBytesToFileAndExecute(byteList, outputFileName)