1/5/2024 0 Comments Hashcat speed words persecond![]() In case you were curious it would take over 22 billion years to brute force a 16 character password that just uses letters. Make a compromise that if you switch to 16 character minimums, passwords should only be rotated twice a year. Complexity doesn’t make your password much more secure, length does. Whereas, using the same machine, it would take under 3 days to guarantee uncovering the shorter password. The long easy to remember password would take a quindecillion years (yes that’s a real number) to brute force at 4 billion guesses per second. The difference in strength between these two passwords is extraordinary. The password: PraetorianPicksPrettyPowerfulPasswords is extremely strong due to its length and it’s significantly easier to remember than the weak 8 character password q#rC3piV. Why not choose a specific sentence that is easy to remember. For years people have had the wrong idea about passwords ingrained in their heads. Transition to 16 character minimum passwords. Keep in mind that this will not crack lots of passwords but will at least give you a quick and easy way to find particularly weak passwords within a set of hashes. This will store the cracked passwords in a file called cracked.txt. Hashcat –a 0 –m 1000 wordlists/rockyou.txt -r le -o cracked.txt However, you may consider adding your own custom words based on the context of whatever you are cracking.Ĭracking NTLM hashes you dumped from an active directory domain controller? This also comes with wordlists that are recommended to use with these rules. If you now have hashcat you can Git clone from the praetorian GitHub page for rules: The rules were created for the password cracking engine, hashcat, which has recently been released as open source. Hopefully if you are reading this, you care enough about security to not fall into these password attacks. Put your password into an NTLM hash generator and run these rules with hashcat against your hash to see if it can be easily cracked by an attacker. You might think your password is secure because you followed all the rules laid out by your IT organization, but you might be surprised by how universally people think about building a password. Attackers are doing this, why shouldn’t you? Run these rule lists against your domain hash dump to see how many of your employees are susceptible to quick compromise from weak passwords. Running password audits to determine where areas of weaknesses exist, is an important metric to keep your organization from being compromised. Why You Should Audit Your PasswordsĪs an IT manager you should be implementing policies to help protect your users. This tool will also be utilized to deliver our clients value when performing password audits on their environment over time. Internally, this is referred to as project Kraken, and will be released for public consumption when appropriate. We can pull from several sources of data to train the ruleset. Many of the internal rulesets that we utilize take advantage of these scenarios and their various combinations.Ĭurrently, I am putting together a more comprehensive tool which will analyze the success of individual rules and autonomously improve the ruleset. The outline of the previous research, from which many of these rules are based, is defined in my last blog post “ Statistics Will Crack Your Password”. The two sets of rules are living lists and change as the environment of passwords changes. Both of the released rulesets have bypassed their counterpart in both time speed and number of hashes cracked and will continue to improve. These rulesets were made to compete against their industry standard counterparts, Best64 and d3ad0ne. A quick compromise list of 64 rules have been released as hob064 and a more extensive ruleset has been released as d3adhob0 for public use. The password cracking rules that Praetorian utilizes for all hash cracking have now been released for Hashcat (described below) which are based on these findings. ![]() Previously, I conducted password research to determine common traits of passwords, which was presented at various conferences. ![]() This happens in nearly every company – you would be surprised. Employees around the world will soon be appeasing their mandatory 90-day password rotation by changing their password from Winter2015 to Spring2016. It’s now 2016 and people are still decisively using poor, predictable passwords.
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