I've been given a non-salted NTLM hash and a week worth of time to find the password it hides. I have also been told the password length is 11 chars, and that it is a Windows 10 user password.
I'm wondering what the most efficient way of trying to recover the password would be? I've tried the sites online that attempt to crack them, and none of them work. However, onlinehashcrack reported they recovered the password (and confirmed the plaintext is 11 chars) but I must pay to unlock it. Either way, this isn't preferable as I will likely need the experience in the future. I've tried both dictionary and brute-force methods in Cain, but it says it will take a very long time on my current setup, and since I only have a week this isn't feasible.
Any help would be greatly appreciated. I haven't really worked with hashes or the like so sorry if this is obvious.