Ophcrack is a Windows password cracker based on a time-memory trade-off using rainbow tables. This is a new variant of Hellman's original trade-off, with better performance. It recovers 99.9% of alphanumeric passwords in seconds.


  • Cracks LM and NTLM Windows hashes
  • Free tables available for Windows XP, Vista and 7
  • Brute-force module for simple passwords
  • Audit mode and CSV export
  • Real-time graphs to analyze the passwords
  • LiveCD available to simplify the cracking
  • Loads hashes from encrypted SAM recovered from a Windows partition

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User Reviews

  • Downloaded fine, but had malware TSPY_PWDUMP_CA25037B.TOMC

  • ophcrack-vista-livecd-3.6.0.iso doesn't have tables. Kinda makes it useless to use. When trying to download it with the browsers provided, I just keep getting TLS errors.

    1 user found this review helpful.
  • I have Windows 7; I forgot my password & I'm the administrator on the computer. This program is supposed to unlock the account for you or crack the password, isn't it, or am I confused? This is, I believe, the third program of this type I have tried. Everything starts fine, downloads quick, but when I go to "run" the program, it, on all three programs, asks me for the administrators password. I do not have the password which is exactly why I am trying to use the program in the first place! I'm just so confused. Am I doing something wrong? Or does this program just not do what I think it does? SOMEONE, please help me.

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Additional Project Details

Intended Audience

System Administrators, Developers, End Users/Desktop

User Interface

Web-based, Command-line, Qt

Programming Language

C++, C, Java