TCHead is software that decrypts and verifies TrueCrypt headers. TCHead supports all the current hashes, individual ciphers, standard volume headers, hidden volume headers and system drive encrypted headers (preboot authentication).

Brute-force TrueCrypt : However, TrueCrypt passwords go through many iterations and are strengthened. Cracking them takes time. Very strong passwords will not be cracked. Also, in addition to trying multiple passwords an attacker must try each password against each combination of hash and cipher (assuming they do not know what these are beforehand). System encrypted hard drives use only one hash and cipher, so attacking those is faster.