Make a Windows 32bit exe console-less (silent mode for exe built through pkg)

32bit-console-less.go

package main

import (
	"log"
	"os"
)

func main() {
	// Open the EXE file for reading and writing
	filename := "to_convert_x32.exe"
	file, err := os.OpenFile(filename, os.O_RDWR, 0644)
	if err != nil {
		log.Fatal(err)
	}
	defer file.Close()

	// Modify the subsystem field at offset 0x180 (13th byte)
	offset := int64(0x180) + 12
	newSubsystem := byte(2)

	_, err = file.WriteAt([]byte{newSubsystem}, offset)
	if err != nil {
		log.Fatal(err)
	}

	log.Println("Subsystem changed to GUI & it will remain silent.")
}