Create a Bootable USB Ophcrack in Windows

Create a Bootable USB Ophcrack from Windows. Ophcrack is an open source Windows password recovery utility that uses rainbow tables to find passwords. It can be run from Windows, Linux or Live CD. The following tutorial explains how to install and boot it from a portable USB device.

Bootable USB Ophcrack

Ophcrack Bootable USB Creation using Windows

Ophcrack is a powerful open source tool designed for recovering lost or forgotten Windows passwords. It uses rainbow tables to efficiently crack password hashes from Windows login accounts. It is compatible with various platforms, including Windows, Linux, or through a Live CD. This tutorial explains how to create a bootable USB of the software, allowing you to recover passwords for Windows XP, Vista, and 7 systems.

Key Features of Ophcrack:

  • Rainbow Table Support: Uses precomputed rainbow tables for faster password cracking, which is particularly effective for simpler passwords.
  • Free and Open Source: Is open source and free to use, with regular updates from the community.
  • Live CD/USB Support: It can be run directly from a Live CD or USB without needing to install any software on the host machine.
  • Supports Multiple Windows Versions: Supports recovery for Windows XP, Vista, and 7, through tailored rainbow tables for each version.

Distribution Information:

  • Distribution Home Page: Sourceforge Project Page
  • Minimum Flash Drive Capacity: 512 MB
  • Persistent Feature: No (doesn't need to be)

Since the Live CD version (running from a SLAX now  SliTaz core) is already available, creating USB Ophcrack is similar to converting any other Live Linux CD to USB and they even offer their own tazusb.exe installer.

Essentials to create USB Ophcrack

  • Windows or Linux using the dd command
  • 512 MB or larger thumb drive (USB stick)
  • Ophcrack ISO file
  • The tazusb.exe tool

Creating bootable USB Ophcrack from Windows

Note: Use our updated Ophcrack Bootable USB creation tutorial instead. It explains how to add all of the Windows Tables to your Ophcrack install, so you will only need one Flash Drive installation to recover Windows XP , Vista or 7 passwords.

  1. Download Ophcrack ISO file
  2. Insert your USB flash drive
  3. Download tazusb and run the tazusb.exe then follow the onscreen instructions.
  4. Once the tool has finished:
    (1.) Reboot your PC and during system post enter BIOS.
    (2.) Set your BIOS boot menu to boot from the USB device.
    (3.) Proceed to boot into Ophcrack on USB.

If all goes well, you should be booting from the USB stick into a mini SLAX environment. Ophcrack is launched automatically after boot.

If you'd rather not use tazusb.exe, there's another option using the dd command in Linux to create the bootable USB. We'll cover that method next below.

Creating Bootable USB Ophcrack from Linux

If you're using Linux, you can create the bootable USB with the dd command. Here's how:

  1. Download Ophcrack ISO
  2. Prepare the USB Drive: Insert the USB flash drive into your Linux machine. Open a terminal and use the lsblk or fdisk -l command to identify your USB device (e.g., /dev/sdb). Be sure to choose the correct device to avoid overwriting important data.
  3. Write the ISO to the USB: Run the following command to write the ISO file to your USB drive:
    sudo dd if=/path/to/ophcrack.iso of=/dev/sdX bs=4M status=progress && sync

    Replace /path/to/ophcrack.iso with the full path to your ISO file, and /dev/sdX with the correct device path for your USB drive (e.g., /dev/sdb). The bs=4M argument specifies a block size of 4 MB, and status=progress shows the progress of the operation.

  4. Eject the USB Drive: Once the command finishes, safely eject the USB drive by running:
    sudo eject /dev/sdX
  5. Boot from USB: Insert the USB drive into the target computer, reboot, and enter the BIOS/UEFI settings. Set the USB drive as the first boot option and save the changes. The program should boot automatically, and you can begin password recovery.

Conclusion:

Creating and using a Live bootable USB of this password recovery tool makes for a great way to easily recover those lost Windows passwords. Whether you're using the Windows tazusb.exe method or the Linux dd command, both approaches are straightforward and effective for preparing your USB drive. Once booted, it will start running and attempt to crack the password using its rainbow tables.

Highly useful for IT professionals and anyone who has forgotten their Windows login credentials. It's easy to set up, portable, and capable of cracking many passwords quickly and efficiently.