Converting those Hashcat $HEX[] results into something useful

HCex.go

package main

import (
	"bufio"
	"encoding/hex"
	"fmt"
	"os"
	"regexp"
	"strings"
)

func main() {
	potfilePath := "hashcat.potfile"
	outputPath := "Hex2human.txt"

	file, err := os.Open(potfilePath)
	if err != nil {
		panic(err)
	}
	defer file.Close()

	outfile, err := os.Create(outputPath)
	if err != nil {
		panic(err)
	}
	defer outfile.Close()

	scanner := bufio.NewScanner(file)
	regex := regexp.MustCompile(`\$HEX\[(.*?)\]`)

	for scanner.Scan() {
		line := scanner.Text()
		fields := strings.Split(line, ":")
		if len(fields) > 1 {
			matches := regex.FindStringSubmatch(fields[1])
			if len(matches) > 1 {
				hexString := matches[1]
				text, err := hex.DecodeString(hexString)
				if err != nil {
					fmt.Fprintf(os.Stderr, "Error decoding hex string: %s\n", err)
				} else {
					fmt.Fprintln(outfile, string(text))
				}
			}
		}
	}

	if err := scanner.Err(); err != nil {
		panic(err)
	}

	fmt.Println("Conversion complete. Check", outputPath)
}