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matt

"reverse MD5"

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Is there anything similar to this that can reverse MD5 hashes? I know MD5 has been broken but can it be cracked or reversed (only for alphanumeric words)?

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Could someone please move this thread to Nube HQ then delete my post?

Thanks.

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There is no known way to reverse MD5. Someone else could probably explain it better than I can for you.

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MD5 is a one way cryptographic algorithm (Generally you can't find the inital value input into the algorithm), you can find values that produce the same hash result as the original value (a collision) for all intensive purposes this can produce the desired result. MD5 is now considered breakable, but this does not mean its practical, especially if the hash your are trying to produce a collision with is salted.

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MD5 is a one way cryptographic algorithm (Generally you can't find the inital value input into the algorithm), you can find values that produce the same hash result as the original value (a collision) for all intensive purposes this can produce the desired result. MD5 is now considered breakable, but this does not mean its practical, especially if the hash your are trying to produce a collision with is salted.

itd totally fuck with people if your program changed letters around in the hash...like say your password produces "ab45x0zl3" before your program writes to the file or whatever, it flips it to "3lzabx45" but then flips it back again before processing. or maybe im just lying to myself. i just woke up so im too groggy to think about it, someone point out its inherent flaws and then laugh at me.

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But if it is only guessing at passwords, theoretically couldnt it go through a dictionary file and convert the words to MD5, then compare the hash to the string you input into there?

Maybe if this doesnt exist, I'll write one. I dont know a single programming language but I'll try and figure something out.

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*cough* John the Ripper *cough*

:)

oh that makes sense, john the ripper is used for hashes but can it be used for MD5 hashes? i forget its been forever and a day since i used john the ripper.

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cough cain cough :P

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matt, thats how rainbow tables work, they have words and the corresponding hash, and it takes whatever hash you have then checks it against all the other ones.

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Here's the list I have of reverse-md5 lookup tables, or whatever you want to call them:

http://www.md5lookup.com (good with numbers, and does some words too)

http://md5.rednoize.com (good with words)

http://nz.md5.crysm.net (English dictionary, nearly all one to four character alphanumeric. 27.8m records.) - seems to be down atm

http://us.md5.crysm.net (British, Jargon and American worldlist, IP addresses 16.0m records)

http://www.xmd5.org (good with numbers)

http://gdataonline.com (wordlist based, I think)

http://www.hashchecker.com (It seems to say its good, but i've never gotten many hits form here)

http://passcracking.ru

http://www.milw0rm.com/md5

http://plain-text.info

http://www.securitystats.com/tools/hashcrack.php

http://www.schwett.com/md5/

http://passcrack.spb.ru

I hope those help.....

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