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PostPosted: 14 Apr 2012, 00:19 
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Shoulder Surfer

Joined: 14 Apr 2012, 00:14
Posts: 1
Can anyone tell me how to take a password list or even user:password list and create a rainbow table to use with rcracki-mt?


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Posted: 14 Apr 2012, 02:17 


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PostPosted: 14 Apr 2012, 02:17 
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MΩth √G∑∏∫∪≤

Joined: 03 Dec 2007, 11:37
Posts: 1059
You can't.

Rainbow tables are not useful because a password list would require O(N) space to store the passwords. Since rainbow tables use O(N^(2/3)) space and O(N^(2/3)) time. Making a rainbow table from a password list word require O(N) + O(N^(2/3)) space which is just O(N) space and O(N^(2/3)) time. There is a better method that would use O(N) space and O(1) time.

Although you can make dictionary rainbow tables but those require password mangling rules (like add 3 digits to the end of all passwords). This way you have just a few words (10s or 100s of thousands) that get expanded to trillions or quadrillions of passwords. There's DRcrack and rdict.

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