go-brute.go

package main

import (
        //"bufio"
        "bytes"
        "crypto/md5"
        "fmt"
        "io"
        "os"
        "runtime"
        "sync"
        //"strings"
)

var lAlph = [26]string{"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"}
var uAlph = [26]string{"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"}
var num = [10]string{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"}
var lAlphnum = [36]string{"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9"}
var userPassword []byte
var wg = &sync.WaitGroup{}

func init() {
        runtime.GOMAXPROCS(1)
}

func main() {
        //reader := bufio.NewReader(os.Stdin)
        //fmt.Print("Enter Password: ")
        //userPass, _ := reader.ReadString('\n')
        //userPass = strings.Replace(userPass, "\n", "", -1)
        //userPassword = md5Gen(userPass)
        userPassword = md5Gen2("h3llo")
        possion := 5
        for x := 1; x <= possion; x++ {
                recurse(x, 0, "")
        }
        wg.Wait()
}

func recurse(width, position int, baseString string) {
        for i := 0; i < len(lAlphnum); i++ {
                if position < width-1 {
                        recurse(width, position+1, baseString+lAlphnum[i])
                }
                //hashed := md5Gen(baseString + lAlphnum[i])
                //checkPassword(baseString + lAlphnum[i])
                //checkPassword(hashed, baseString+lAlphnum[i])
                wg.Add(1)
                go md5Gen(baseString + lAlphnum[i])
        }
}
func md5Gen(password string) {
        h := md5.New()
        io.WriteString(h, password)
        checkPassword(h.Sum(nil), password)
}

func checkPassword(hashed []byte, password string) {
        switch bytes.Compare(hashed, userPassword) {
        case 0:
                fmt.Println("match")
                fmt.Println("Password is:", password)
                os.Exit(1)
        }
        wg.Done()
}

func md5Gen2(password string) []byte {
        h := md5.New()
        io.WriteString(h, password)
        return h.Sum(nil)
}

/*
func checkPassword(hashed []byte, password string) {
        switch bytes.Compare(hashed, userPassword) {
        case 0:
                fmt.Println("match")
                fmt.Println("Password is:", password)
                os.Exit(1)
        }
}
*/