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Sample PG file
FAQ
MPI
Statistics
Price:Performance Worksheet
Clustering Resources
Other Crackers

FAQs

  1. What is dkbf?
  2. What's better L0phtCrack or dkbf?
  3. What's MPI? Where do I get it?
  4. How do I get password hashes?
  5. Which attacks are supported?
  6. Which attack is fastest?
  7. Can dkbf crack anything else besides Windows passwords?
What is dkbf?
dkbf stands for Distributed, Keyboard, Brute-Forcer. It is now a distributed version of the program L0phtCrack, without the dictionary attack. dkbf will attempt to crack the Windows Lanman and NT Hash passwords whose hashes were obtained via sniffer or SAM dump. Process distribution is handled using the Message Passing Interface (MPI). In order to run the program, you will need at least one Linux box with MPI. The more boxes and CPUs you can cluster, the faster dkbf will run. All boxen must be on the same LAN.

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What's better L0phtCrack or dkbf?
L0phtCrack is a highly-optimized, multithreaded program. Thus, if you have a box with 4 CPU's on it (and no other machines) L0phtCrack is better. Or if you want to perform a dictionary attack, L0phtCrack is better. However, if you have multiple machines on the same LAN (that run Linux) and a dictionary attack has proven insufficient, dkbf might be better as you will be able to distribute the workload of cracking passwords amongst these machines.

Another factor to consider is that dkbf does not use routines that are as fast as those in L0phtCrack's commercial version.

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What's MPI? Where do I get it?
MPI Information

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How do I get password hashes?
These can either be "dumped" from the machine using pwdump or hashes can be sniffed off the network using an SMB packet capture tool such as LophtCrack.

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Which attacks are supported?
Lanman Hashes and/or NT Hashes from either PWDUMP or SMB packet sniffer logs.

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Which attack is fastest?
Lanman Hashes obtained via pwdump.

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Can dkbf crack anything else besides Windows passwords?
Not yet. This was a requirement when writing dkbf, so, hopefully, when adding new attacks for either OS's or products, no changes will be required other than dropping in the new attack. (P.S. - Have an idea, let me know.)

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