decrypt.go

package main

import (
	"fmt"
	"strconv"
	"strings"
)

const pwdLen = 4

func numDecode(char string, pos int) string {
	result := ""

	pwdRand := "AbCdEfGhIjKlMnOpQrStUvWxYzaBcDeFgHiJkLmNoPqRsTuVwXyZ1234509876-_.\\/:"

	charPos := strings.Index(pwdRand, char)

	charPos = charPos - (pwdLen + pos - 1)
	if charPos <= 0 {
		// not found
		result = string(pwdRand[charPos+len(pwdRand)-1]) // actionscript index from 1
	} else {
		result = string(pwdRand[charPos-1]) // actionscript index from 1
	}
	return result
}

func decode(s string) string {
	result := ""
	pos := 0

	for idx, char := range strings.Split(s, "") {
		// actionscript index from 1, so idx + 1
		if (idx+1)%(pwdLen+1) != 0 {
			result = result + numDecode(char, pos)
			continue
		}
		charCode, err := strconv.Atoi(char)
		if err != nil {
			pos = 0
		} else {
			pos = charCode
		}
	}
	return result
}

func main() {
	str := "lxxt6jIID2Byq541xEB6F3u71bYaE5A/A-1dMFS4o9mx8uzpm81KxH25u1E29:Cl7Wg|lxxt4hGGB6F3u763zGD9i0X_4EBDh7CAC.6Irkx6q7oz7TYOL2uErB25u1E7_:hQ5Ue|lxxt4hGGB6F3u763zGD9i0X_4EBDh7CAC.6Irkx6q7oz7TYOL2uErB25u1E7_/hQ5Ue|lxxt4hGGB6F3u763zGD9i0X_4EBDh7CAC.6Irkx6q7oz7TYOL2uErB25u1E7_\\hQ5Uelxxt4hGGB6F3u763zGD9i0X_4EBDh7CAC.6Irkx6q7oz7TYOL2uErB25u1E7_.hQ5Uelxxt4hGGB6F3u763zGD9i0X_4EBDh7CAC.6Irkx6q7oz7TYOL2uErB25u1E7__hQ5Uelxxt4hGGB6F3u763zGD9i0X_4EBDh7CAC.6Irkx6q7oz7TYOL2uErB25u1E7_AhQ5Ue|lxxt4hGGB6F3u763zGD9i0X_4EBDh7CAC.6Irkx6q7oz7TYOL2uErB25u1E7bhQW5e|lxxt4hGGB6F3u763zGD9i0X_4EBDh7CAC.6Irkx6q7oz7TYOL2uErB25u1E7ChQW5e|lxxt4hGGB6F3u763zGD9i0X_4EBDh7CAC.6Irkx6q7oz7TYOL2uErB25u1E7dhQW5e"

	strArr := strings.Split(str, "|")

	for idx, s := range strArr {
		strArr[idx] = decode(s)
	}

	fmt.Println(strings.Join(strArr, "\n"))
}