Bruteforcing passwords

A day ago I started a c# project where I bruteforce passwords. Passwords can be both integers and strings. In the code I check how many characters the password has. Whilst this is kinda cheating it would take too long to crack otherwise. I am posting it here to see if it's good enough.

using System; namespace Hacking_Project { class Program { static void Main() { //Console Color Console.ForegroundColor = ConsoleColor.White; Console.Clear(); //If password is found bool done = false; //If the password is a string, not the best name but ok bool yes = false; //If the Guessed password is the same number of characters as the original password int pass = 0; //Guessed password string pass_check = ""; //Possible characters for the password char[] pos = {'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'}; Console.WriteLine("What is the password?"); //Asking for the password to crack string password = Console.ReadLine(); //How much characters does the password has. I know that this is kinda cheating, but then the bruteforce would take to much int digits = password.Length; //Initialising the random number generator Random rand = new Random(); //The choices that the calculator will take for the guessed password(int) int[] choices = new int[digits]; //The choices that the calculator will take for the guessed password(string) char[] choices1 = new char[digits]; //If the password is a string for (int i = 0; i < pos.Length; i++) { if (password.Contains(pos[i])) { password = password.ToLower(); yes = true; } } //The Cracking Part while (done == false) { if (!yes) { for (int i = 0; i < digits; i++) { choices[i] = rand.Next(0, 9); pass_check += choices[i]; pass++; //Console Color Console.ForegroundColor = ConsoleColor.DarkYellow; if (pass != digits) { Console.Write(choices[i]); } else { Console.Write(choices[i] + ", "); } } } else { for (int i = 0; i < digits; i++) { choices1[i] = pos[rand.Next(pos.Length)]; pass_check += choices1[i]; pass++; Console.ForegroundColor = ConsoleColor.DarkYellow; if (pass != digits) { Console.Write(choices1[i]); } else { Console.Write(choices1[i] + ", "); } } } pass = 0; if (pass_check == password) { Console.ForegroundColor = ConsoleColor.White; Console.Write("\n\nThe password is: "); Console.ForegroundColor = ConsoleColor.Green; Console.Write(pass_check); Console.ForegroundColor = ConsoleColor.White; Console.Write("\n\nThe original password is: "); Console.ForegroundColor = ConsoleColor.Red; Console.Write(password); Console.ForegroundColor = ConsoleColor.Blue; Console.Write("\n\nDo you want to restart?"); Console.ForegroundColor = ConsoleColor.White; Console.Write(" => "); string restart = Console.ReadLine(); restart = restart.ToLower(); if (restart == "yes") { Main(); } else if (restart == "no") { done = true; } } //If the password is not found, quessed password is set to empty else { pass_check = ""; } } } } }