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IT Security and Insecurity Portal |
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Posted: Fri Mar 13, 2009 8:36 am |
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pierpox |
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Joined: Mar 12, 2009 |
Posts: 7 |
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waraxe wrote: | pierpox wrote: | waraxe wrote: | pierpox wrote: | waraxe wrote: | pierpox wrote: | Hi guys, I'd like to ask an information.I tried to extract from my laptop with windows vista the SAM and SYSTEM files and I have loaded them with ophcrack.On the row with my user name there is just an NT HASH code , all other fields are empty.The strange thing is: calculating the hash code of my vista login password with the MD4 or MD5 algorithm , none of these values matches that of NT HASH.So my question is: what type of information does NT HASH collect about my login password? I thought that NT HASH was the hash code of the password calculated with the MD5 or MD4 algorithm ...can someone give me some advice? |
NT hash is basically md4 hash of Unicode password:
http://davenport.sourceforge.net/ntlm.html
Code: |
Password: SecREt01
The Unicode mixed-case password is "0x53006500630052004500740030003100" in hexadecimal; the MD4 hash of this value is calculated, giving "0xcd06ca7c7e10c99b1d33b7485a2ed808". This is the NTLM hash.
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So if you have simple password, consisting of lower-ascii characters, then just put binary zero after every char and then take md4 hash |
thanks for the reply...but using this site http://tools.web-max.ca/encode_decode.php for calculating the md4 hash value of "53006500630052004500740030003100" the result is :"534fa82d2e2feb9904f143b40050b7d3",I don't understand,what is the right value? |
I meant binary zero (0x00, \x00, NUL, %00), not literal zero (0x30, "0",%30). |
Hi,I'm sorry if I abuse of your patience, but can you write the right string on which I have to apply the md4 encoder?Many thanks |
Most online tools do not work properly with strings containing binary zeros, so you need local test.
For example this is NT hash calculation using Linux shell:
Code: |
$ echo -n test | sed -r 's,(.),\1\x00,g' | openssl md4
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Do you know if there is a software for windows platform that can be used like the linux comand?And also can you suggest me a good md4 decrypter(possibly using cuda) ? thanks |
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Last edited by pierpox on Fri Mar 13, 2009 8:48 am; edited 1 time in total |
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Posted: Fri Mar 13, 2009 8:46 am |
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pierpox |
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Joined: Mar 12, 2009 |
Posts: 7 |
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Hovewer I tried under my Ubuntu version :
~$ echo -n 53006500630052004500740030003100 | sed -r 's,(.),\1\x00,g' | openssl md4
but the risult is:d2c52d3e23080e55c9824d4dde2fa6d0
not cd06ca7c7e10c99b1d33b7485a2ed808...why?where I wrong? |
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Posted: Fri Mar 13, 2009 9:09 am |
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waraxe |
Site admin |
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Joined: May 11, 2004 |
Posts: 2407 |
Location: Estonia, Tartu |
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pierpox wrote: | Hovewer I tried under my Ubuntu version :
~$ echo -n 53006500630052004500740030003100 | sed -r 's,(.),\1\x00,g' | openssl md4
but the risult is:d2c52d3e23080e55c9824d4dde2fa6d0
not cd06ca7c7e10c99b1d33b7485a2ed808...why?where I wrong? |
Try this:
Code: |
$ echo -n SecREt01 | sed -r 's,(.),\1\x00,g' | openssl md4
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About CUDA-enabled crackers:
CUDA NTLM multi-hash bruteforcer
http://3.14.by/forum/viewtopic.php?f=8&t=60
I have not tested it though |
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Posted: Fri Mar 13, 2009 10:44 am |
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pierpox |
Regular user |
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Joined: Mar 12, 2009 |
Posts: 7 |
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waraxe wrote: | pierpox wrote: | Hovewer I tried under my Ubuntu version :
~$ echo -n 53006500630052004500740030003100 | sed -r 's,(.),\1\x00,g' | openssl md4
but the risult is:d2c52d3e23080e55c9824d4dde2fa6d0
not cd06ca7c7e10c99b1d33b7485a2ed808...why?where I wrong? |
Try this:
Code: |
$ echo -n SecREt01 | sed -r 's,(.),\1\x00,g' | openssl md4
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About CUDA-enabled crackers:
CUDA NTLM multi-hash bruteforcer
http://3.14.by/forum/viewtopic.php?f=8&t=60
I have not tested it though |
...many thanks for your support ,but I'd like to use a CUDA NTLM multi-hash bruteforcer for my windows vista x64,do you know somone? |
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Posted: Fri Mar 13, 2009 12:27 pm |
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waraxe |
Site admin |
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Joined: May 11, 2004 |
Posts: 2407 |
Location: Estonia, Tartu |
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pierpox wrote: | waraxe wrote: | pierpox wrote: | Hovewer I tried under my Ubuntu version :
~$ echo -n 53006500630052004500740030003100 | sed -r 's,(.),\1\x00,g' | openssl md4
but the risult is:d2c52d3e23080e55c9824d4dde2fa6d0
not cd06ca7c7e10c99b1d33b7485a2ed808...why?where I wrong? |
Try this:
Code: |
$ echo -n SecREt01 | sed -r 's,(.),\1\x00,g' | openssl md4
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About CUDA-enabled crackers:
CUDA NTLM multi-hash bruteforcer
http://3.14.by/forum/viewtopic.php?f=8&t=60
I have not tested it though |
...many thanks for your support ,but I'd like to use a CUDA NTLM multi-hash bruteforcer for my windows vista x64,do you know somone? |
EGB is CUDA enabled, can crack NT (but not LM) and is compatible with Vista x64 (I'm using it on same platform right now).
http://www.insidepro.com/eng/egb.shtml |
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Posted: Fri Mar 13, 2009 4:00 pm |
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darcsacka |
Beginner |
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Joined: Mar 12, 2009 |
Posts: 4 |
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and somebody with my problem?..pls....can i crack somehow..that password?..with that hash..or if i have system file and sam file?.....p.s...bruteforce is taking verry long |
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Posted: Fri Mar 13, 2009 4:19 pm |
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waraxe |
Site admin |
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Joined: May 11, 2004 |
Posts: 2407 |
Location: Estonia, Tartu |
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darcsacka wrote: | and somebody with my problem?..pls....can i crack somehow..that password?..with that hash..or if i have system file and sam file?.....p.s...bruteforce is taking verry long |
I tried my wordlists and bruteforce with EGB but without success. Rainbow tables may help, but currently I don't have them for NT hashes. |
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Posted: Fri Mar 13, 2009 6:35 pm |
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pierpox |
Regular user |
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Joined: Mar 12, 2009 |
Posts: 7 |
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waraxe wrote: | pierpox wrote: | waraxe wrote: | pierpox wrote: | Hovewer I tried under my Ubuntu version :
~$ echo -n 53006500630052004500740030003100 | sed -r 's,(.),\1\x00,g' | openssl md4
but the risult is:d2c52d3e23080e55c9824d4dde2fa6d0
not cd06ca7c7e10c99b1d33b7485a2ed808...why?where I wrong? |
Try this:
Code: |
$ echo -n SecREt01 | sed -r 's,(.),\1\x00,g' | openssl md4
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About CUDA-enabled crackers:
CUDA NTLM multi-hash bruteforcer
http://3.14.by/forum/viewtopic.php?f=8&t=60
I have not tested it though |
...many thanks for your support ,but I'd like to use a CUDA NTLM multi-hash bruteforcer for my windows vista x64,do you know somone? |
EGB is CUDA enabled, can crack NT (but not LM) and is compatible with Vista x64 (I'm using it on same platform right now).
http://www.insidepro.com/eng/egb.shtml |
I tried Egb,only for 3 minutes, and I can say that is very good , but you have to buy a license for really using it.However I also tried CUDA-Multiforcer-Windows-0.61 that is freeware,with my gtx 280 I obtained 655M/s
After a little tuning of the program parameters,I reached 700M/s |
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Posted: Mon Mar 16, 2009 7:09 am |
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mic33 |
Regular user |
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Joined: Mar 09, 2009 |
Posts: 11 |
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mic33 wrote: |
Excuse me.... do you need time to decode this difficult hash?
Is it possible?
Can you help me, please?
I wait you... you are fantastic!
Thanks very much!!!!
thanks very much |
Please, are there some good news for me?...
Thanks in advance!!!! |
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Hashes |
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Posted: Tue Mar 17, 2009 12:06 am |
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gold99 |
Beginner |
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Joined: Mar 17, 2009 |
Posts: 1 |
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I've obtained these hashes using Backtrack in my Windows 2003 Server:
Administrator:500:aad3b435b51404eeaad3b435b51404ee:d300cfc9b5df8f8528b7d8e82009b71c:::
Guest:501:aad3b435b51404eeaad3b435b51404ee:31d6cfe0d16ae931b73c59d7e0c089c0:::
Is there any way I decode them? I've tried John the Ripper with no Success.
Thanks |
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Posted: Sun Apr 12, 2009 2:55 am |
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hulu142 |
Beginner |
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Joined: Apr 12, 2009 |
Posts: 1 |
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Hallo
please help me decrypt this lm and ntlm hash. Thank you very much.
LM-Hash: C11C2308261B7133AAD3B435B51404EE
NTLM-Hash:ECE66666AEB35A2CF5D8908022B8E657 |
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Help! |
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Posted: Sun Apr 26, 2009 10:34 pm |
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ritz |
Beginner |
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Joined: Apr 27, 2009 |
Posts: 3 |
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Hello,
Can someone please help me with these hashes
LM: FD26E153692C1035A16410F9841D007B
NT: 5E1D1CEF7C646BC0B37694B5E785912D
Thank in Advance!!! |
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Posted: Tue Apr 28, 2009 7:47 am |
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waraxe |
Site admin |
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Joined: May 11, 2004 |
Posts: 2407 |
Location: Estonia, Tartu |
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hulu142 wrote: | Hallo
please help me decrypt this lm and ntlm hash. Thank you very much.
LM-Hash: C11C2308261B7133AAD3B435B51404EE
NTLM-Hash:ECE66666AEB35A2CF5D8908022B8E657 |
Plaintext of ECE66666AEB35A2CF5D8908022B8E657 is 110-ali |
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Re: Help! |
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Posted: Tue Apr 28, 2009 7:47 am |
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waraxe |
Site admin |
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Joined: May 11, 2004 |
Posts: 2407 |
Location: Estonia, Tartu |
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ritz wrote: | Hello,
Can someone please help me with these hashes
LM: FD26E153692C1035A16410F9841D007B
NT: 5E1D1CEF7C646BC0B37694B5E785912D
Thank in Advance!!! |
Plaintext of 5E1D1CEF7C646BC0B37694B5E785912D is L0cal 4dm1n |
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Re: Hashes |
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Posted: Tue Apr 28, 2009 7:52 am |
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waraxe |
Site admin |
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Joined: May 11, 2004 |
Posts: 2407 |
Location: Estonia, Tartu |
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gold99 wrote: | I've obtained these hashes using Backtrack in my Windows 2003 Server:
Administrator:500:aad3b435b51404eeaad3b435b51404ee:d300cfc9b5df8f8528b7d8e82009b71c:::
Guest:501:aad3b435b51404eeaad3b435b51404ee:31d6cfe0d16ae931b73c59d7e0c089c0:::
Is there any way I decode them? I've tried John the Ripper with no Success.
Thanks |
Guest account has no password, because 31d6cfe0d16ae931b73c59d7e0c089c0 is md4 hash of empty password. |
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