PACK – Password Analysis & Cracking Toolkit

PACK (Password Analysis and Cracking Toolkit) is a collection of utilities developed to aid in analysis of password lists in order to enhance password cracking through pattern detection of masks, rules, character-sets and other password characteristics. The toolkit generates valid input files for Hashcat family of password crackers.

Before we can begin using the toolkit we must establish a selection criteria of password lists. Since we are looking to analyze the way people create their passwords, we must obtain as large of a sample of leaked passwords as possible. One such excellent list is based on RockYou.com compromise. This list both provides large and diverse enough collection that provides a good results for common passwords used by similar sites (e.g. social networking). The analysis obtained from this list may not work for organizations with specific password policies. As such, selecting sample input should be as close to your target as possible. In addition, try to avoid obtaining lists based on already cracked passwords as it will generate statistics bias of rules and masks used by individual(s) cracking the list and not actual users.

The most basic analysis that you can perform is simply obtaining most common length, character-set and other characteristics of passwords in the provided list. In the example below, we will use ‘rockyou.txt’ containing approximately 14 million passwords. Launch statsgen.py with the following command line:

$ python statsgen.py rockyou.txt

         StatsGen #.#.#   | |
          _ __   __ _  ___| | _
         | '_  / _` |/ __| |/ /
         | |_) | (_| | (__|   < 
         | .__/ __,_|___|_|_
         | |                    
         |_| [email protected]

    [*] Analyzing passwords in [rockyou.txt]
    [+] Analyzing 100% (14344390/14344390) of passwords
        NOTE: Statistics below is relative to the number of analyzed passwords, not total number of passwords

    [*] Length:
    [+]                         8: 20% (2966037)
    [+]                         7: 17% (2506271)
    [+]                         9: 15% (2191039)
    [+]                        10: 14% (2013695)
    [+]                         6: 13% (1947798)

    [*] Character-set:
    [+]             loweralphanum: 42% (6074867)
    [+]                loweralpha: 25% (3726129)
    [+]                   numeric: 16% (2346744)
    [+]      loweralphaspecialnum: 02% (426353)
    [+]             upperalphanum: 02% (407431)

    [*] Password complexity:
    [+]                     digit: min(0) max(255)
    [+]                     lower: min(0) max(255)
    [+]                     upper: min(0) max(187)
    [+]                   special: min(0) max(255)

    [*] Simple Masks:
    [+]               stringdigit: 37% (5339556)
    [+]                    string: 28% (4115314)
    [+]                     digit: 16% (2346744)
    [+]               digitstring: 04% (663951)
    [+]                 othermask: 04% (576324)

    [*] Advanced Masks:
    [+]          ?l?l?l?l?l?l?l?l: 04% (687991)
    [+]              ?l?l?l?l?l?l: 04% (601152)
    [+]            ?l?l?l?l?l?l?l: 04% (585013)
    [+]        ?l?l?l?l?l?l?l?l?l: 03% (516830)
    [+]            ?d?d?d?d?d?d?d: 03% (487429)

Ehacking Staff
With more than 50 global partners, we are proud to count the world’s leading cybersecurity training provider. EH Academy is the brainchild of Ehacking, which has been involved in the field of training since the past Five years and continues to help in creating professional IT experts.

Most Popular

What Makes ICS/OT Infrastructure Vulnerable?

Infrastructure security for operational technologies (OT) and industrial control systems (ICS) varies from IT security in several ways, with the inverse confidentiality, integrity, and...

Everything You Must Know About IT/OT Convergence

What is an Operational Technology (OT)? Operational technology (OT) is a technology that primarily monitors and controls physical operations. It can automate and control machines,...

Understand the OT Security and Its Importance

This article discusses OT security and why it is essential for protecting industrial systems from cyberattacks. We will also discuss common control objectives that can...

What is Deepfake, and how does it Affect Cybersecurity?

Producing deepfake is easy. It is hard to detect. They operate with a description of reality rather than reality itself (e.g., a video). Any...