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n00b rainbow tables question. |
bsdpunk
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Posts: 11
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Joined: 14.02.08
Rank: Moderate |
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Total n00b question, don't beat me up.
So I would like to decrypt an sha1 password(yeah I know I need a supercomputer and many years)...anyway that aside, I know the salt to the hash I am trying to break and I was wondering if there was a way to build a rainbow table with the salt built in. Also if there is some other way to decrypt SHA1 that I am missing? All the forum posts I read pretty much had people just saying it wasn't possible. On wikipedia it mentions a birthday attack algorithm that may work. Anybody know anything?
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http://bsdpunk.blogspot.com |
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RE: n00b rainbow tables question. |
COD3
Banned
Posts: 213
Location: US Hax
Joined: 30.01.08
Rank: Hacker Level 1 |
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yes man..i've heard of that kind of decryption. I myself have assembled a little program you could try.
Here's my demo. If you want the whole version..let me know.
MessageDigest oMessageDigest = MessageDigest.getInstance("SHA-1" ;
oMessageDigest.reset();
byte[] bPasswordInBytes = sPassword.getBytes();
oMessageDigest.update(bPasswordInBytes);
byte[] bPasswordOutBytes = oMessageDigest.digest(); // encrpyted string
The only problem with the demo is decrypting it back. I could maybe give it a shot myself decrypting it too. PM me...
" Tormentium "
Computers are incredibly fast, accurate, and stupid; humans are incredibly slow, inaccurate and brilliant; together they are powerful beyond imagination.- Albert Einstein |
 
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RE: n00b rainbow tables question. |
bsdpunk
Member
Posts: 11
Location:
Joined: 14.02.08
Rank: Moderate |
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Your inbox is full.
/server irc.malvager.com
http://bsdpunk.blogspot.com |
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RE: n00b rainbow tables question. |
exidous
Member
Posts: 113
Location: ~Where My Proxy Says!~
Joined: 17.07.07
Rank: Uber Elite |
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cain and abel is a good tool to use!
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RE: n00b rainbow tables question. |
Erox91
Member
Posts: 3
Location:
Joined: 03.02.08
Rank: Hacker Level 2 |
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Don't know how but I'll give you and tip.
Don't try to get 100% tables.. (if you don't have a supercomputer)
The lower your chainlength is the faster you can crack. But you got worse %.
You have to balance that.
For example.
Properties:
Hash: Sha1
Min length: 1
Max length: 5
Index: 0
Chain length: 100
Chain count: 2000000
Number of tables: 1
Charset: Loweralpha-numeric
Table properties:
Keyspace: 62193780
Disk space: 30.51 MB (You can offer so much.. you can high the chain count to get the % better.)
Success probability: 0.852212 (85,22%)
Benchmark (got a slow computer at moment):
Hash speed: 1065189 hash/sec
Step speed: 945537 step/sec
Table precomputation time: 3.52533 minutes
Total percomputation time: 3.52533 minutes
Max cryptoanalysis time: 0.005288 seconds (fast, faster, fastest, rt)
That's a example of the settings.
Hope this helped you and have a nice day!
"The quiter you become, the more you are able to here." |
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RE: n00b rainbow tables question. |
fallingmidget
Banned
Posts: 1138
Location: *.*
Joined: 18.09.07
Rank: God
Warn Level: 100
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well on google every thing i find when i type sha1 decryptor is
http://www.md5encryption.com/
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