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L0phtCrack

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L0phtCrack is a password auditing and recovery application originally produced by Mudge from L0pht Heavy Industries. It is used to test password strength and sometimes to recover lost Microsoft Windows passwords, by using dictionary, brute-force, hybrid attacks, and rainbow tables.

Official website

Link to the official site · 2,390 chars · not written by Vinony

Source code

Install CMake Download from Install it, ensuring CMake is avaiable on the system path at least for the current user performing the build. Install Visual Studio 2017 Community Edition. You can get this for free from Microsoft with the Dev Essentials Program: Install CUDA SDK Download from Run the installer with default settings, or with custom settings, leaving off 'GeForce Experience' if you want to reduce bloat. Install Qt 5.12.11 Download the online installer from Run the installer and choose the 'Archive' category, use Qt 5.12.11, MSVC 2017 32-bit and 64-bit builds, and include sources for debugging purposes, and Qt Debug Information Files Note the location where it is installed, typically in the folder C: Qt Install NSIS Download the NSIS installer (3.08 or newer) from Add the NSIS plugin: nsProcess from Get the v1.6 version and put the dlls in your C: Program Files (x86) NSIS Plugins folders in the appropriate places, renaming nsProcessW.dll to nsProcess.dll for the unicode version ShellExecAsUser plugin from get the 'Unicode Update' version and install the same way as nsProcess Choose a root folder for the repository. Windows often has path length limitations so pick something short, like C: if possible Set up jtrdll You should be using git for windows bash shell for this, or a compatible bash shell for windows Run cd l0phtcrack/external/jtrdll Run ./dynamic big crypt generator.sh Run the setup script, pointing it to the location of Qt (ensure you are using a default CMD command prompt with no MSVC environment settings) Build the 'L0phtCrack Remote Agent' for Windows, by opening the l0phtcrack win-agent win-agent.sln solution file in VS2017 and building all configurations (use batch build, select all to build every combination of the agent) This will likely fail at the 'signtool.exe' build step because code signing certificates cost money and there is no 'LetsEncrypt' for code signing yet, and you don't have the cert/private key for l0phtcrack. Build the 64-bit 'L0phtCrack 7' project by opening l0phtcrack build win64 L0phtCrack 7.sln and compiling it Build the 32-bit 'L0phtCrack 7' project by opening l0phtcrack build win32 L0phtCrack 7.sln and compiling it Building the installer Build the RelWithDebInfo versions of the Windows x86 and x64 builds of L0phtCrack Run a VS2017 Native Tools Command Prompt and ensure signtool.exe is in your path. Also ensure Python 2.7.14 is in your path cd to tools releasetool and run: 'python releasetool.py buildinstaller release64 'python releasetool.py buildinstaller release32 This will likely fail at the 'signtool.exe' build step because code signing certificates cost money and there is no 'LetsEncrypt' for code signing yet, and you don't have the cert/private key for l0phtcrack. Various portions of L0phtCrack use different open source licenses. Please review tools/releasetool/installer/license.txt for details

Excerpt from the source-code README · 3,908 chars · not written by Vinony

Wikidata facts

Official website
l0phtcrack.gitlab.io
Show 3 more facts
software version identifier
7.2.0
source code repository URL
gitlab.com/l0phtcrack/l0phtcrack
inception
2000-00-00
Sources (4)

via Wikidata · CC0

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Contents
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L0phtCrack is a password auditing and recovery application originally produced by Mudge from L0pht Heavy Industries. It is used to test password strength and sometimes to recover lost Microsoft Windows passwords, by using dictionary, brute-force, hybrid attacks, and rainbow tables.

The initial version was released in the Spring of 1997.

Available in 7 languages

via Wikidata sitelinks · CC0

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