for the hash like in “real level 3”. This is a copy/paste of one of my previous post, as asked by paulau to put it here.
I finished that level yesterday when I found that I looked way to deep. I was trying to bruteforce with a C# program but it was way too long for the password and I had too much possibilities in both the username and the password. One of my friend found an algo to reverse the hash (pretty brilliant btw!) and again, too much possibilities and too long (but shorter then brute force). That’s when i found the thing that made me look stupid
Anyway, I came back on my left over code to finish it and I had the Idea to make a dictionary attack on it. I combined about all the dictionnary I could find on http://www.insidepro.com/dictionaries.php in one big file. My algo to crack it is pretty simple:
setting = 7 for username and 9 for password:
```
static void Main(string[] args)
{
StreamReader r = File.OpenText(“completeEnglish.txt”);
string password = “”;
do
{
password = “”;
if (makehash(password = r.ReadLine(), setting) == hash)
Console.WriteLine(password);
} while (!r.EndOfStream);
Console.WriteLine(“Not found”);
Console.ReadLine();
}
public static long makehash(string str, int mult)
{
long hash = 0;
for (int j = 0; j < str.Length; j++)
hash = hash * mult + alpha.IndexOf(str.Substring(j, 1)) + 1;
return hash;
}
```
Anyway, I manage to get trough all with that! Usernames and password! And it does'nt event take 10 minutes! I am really proud!! :P
PS: I also have the reverse hash algo if you want to.
PPS: And the bruteforce one. Both are not finished though, but almost. This one is working perfectly.
