This tutorial was written using Hash Suite 3.1 Pro and assumes basic knowledge of password hashing and password hash cracking. General background Storing user passwords in plain text naturally results in an instant compromise of all passwords if the password file is compromised. To reduce this danger, Windows applies a cryptographic hash function, which transforms each password into a hash, and stores this hash. This hash function is one-way in the sense that it is infeasible to infer a password back from its hash, except via the trial and error approach described below. To authenticate a user, the password presented by the user is hashed and compared with the stored hash. Hash Suite, like all other password hash crackers, does not try to invert the hash to obtain the password (which might be impossible). It follows the same procedure used by authentication: it generates different candidate passwords (keys hashes them and compares the computed hashes with the stored hashes. This approach works because users generally select passwords that are easy to remember, and as a side-effect these passwords are typically easy to crack. Another reason why this approach is so very effective is that Windows uses password hash functions that are very fast to compute, especially in an attack (for each given candidate password). More information about password cracking can be found here. Hash Suite Key- Providers Hash Suite offers a number of different ways (named key-providers) to generate candidate passwords (which are sometimes referred to as keys Charset: Generates keys trying all combinations of a given charset. Also called brute-force. Wordlist: Generates keys taking them from a dictionary. Very successful and requires low resources. Keyboard: Generates keys trying combinations of adjacent keys on a keyboard. Phrases: Generates phrases combining words from a wordlist. Useful.
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