Cryptanalisys :- Basically, Cryptanalisys means Operations performed in converting encrypted messages to plain text without initial knowledge of the crypto-algorithm and/or key employed in the encryption.
This is the fastest technique of password cracking possible due to "Rainbow Tables".
A rainbow table is a file that is used to lookup an unknown plaintext from a known hash for an algorithm that does not usually permit this operation. linktowhy.blogspot.com
Steps 1 to 4 i.e upto importing hashes from local system, are similar to previous technique (i.e brute-force). The steps coming after that are as follows-
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5) Here, select "cryptanalisys attack" then "NTLM hashes" and then select "via rainbow tables". Here we can choose either OphCrack or RainbowCrack formats of tables. The rainbow tables are available free to download on internet.
Due to large file size of rainbow tables (350MB - 3GB); instead of downloading we can also create at own just by downloading rainbow table generator (winrtgen.zip of 181KB) free download at "http://www.oxid.it/downloads/winrtgen.zip" linktowhy.blogspot.com
6) Click on "Add Table"linktowhy.blogspot.com
7) Browse for the location of rainbow table on your system, select proper table and click "open".
8) Select the loaded table and then click on "Start" button.linktowhy.blogspot.com
9) On completetion it will show the exact password.linktowhy.blogspot.com
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