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As a part of authorized penetration tests of companies' internal corporate networks and external e-commerce websites, you have captured a large number of password hashes, and some encrypted files of various types. The hashes are from Active Directory, UNIX systems, LDAP servers, various web application and/or forums, routers, etc. As part of your analysis, your client has asked for password complexity statistics, what their users are doing right and/or wrong related to generating passwords, and identification of weak passwords. You only have 48 hours to complete this effort.
Prior to the start of the contest, KoreLogic will disseminate a set of files encrypted with a long random string, as direct downloads, torrents, or both. Once the contest starts, KoreLogic will publish the decryption string to unpack the files. This way, competitors can pre-download the contest files (some of which will be quite large) so that they are ready to go when the contest starts.
These will contain files of hashes of various types, and also various encrypted files (challenges / hints). Hashes will be things like MD5, Salted MD5s, Blowfish, SHA1, SHA256, SSHA, DES, MD5(md5), NTLM, etc. Challenge files will be encrypted .zip files, .doc's, private key files, truecrypt volumes, etc. (Many surprises and tricks as well).
The passwords will range from being "easy" to extremely difficult to crack. They are not simply randomly generated passwords, which would favor only the person or group with the most GPU/CPU bruteforcing horsepower. Instead, the password files contain passwords based on what we believe are challenging real-world patterns. Passwords will be of varying lengths, patterns, and complexity. Creative password cracking techniques, rules, dictionaries, and tools will be needed. The teams who are smart about the methods they use (i.e., teams who can crack more, with less work) will most likely be the most successful.
Challenge files are worth some points to crack, and then may contain other things: more password hashes inside, or hints that will help in cracking some of the password hashes.
The goal of the contest is simple: score the most points.
Types of Teams:
You have 2 choices in choosing how you compete:
Points are earned in two ways:
Teams must provide their results directly to KoreLogic at multiple intervals during the 48 hour contest window. (See the HOWTO for details on how to submit.)
Along with encrypted password hashes, there will be some files/blobs (encrypted .doc or .pdf, encrypted disk images, etc). These, when cracked, will contain some hints about how some of the password plaintexts were generated. For instance, "Policy of 12-character minimum length" or "Requires two of upper case, lower case, numeric, and special characters" or "Many of our users are Swedish" would be helpful in cracking hashes that might otherwise be very dificult to find.
Separate from the main contest, we will be tweeting one password hash every hour that the contest room is open. The first person to show up at the CMIYC contest table with the correct answer will win a small prize (limit one per human). You do not have to be registered or competing in the main contest to claim these prizes.
For everyone competing, besides following the directions about how to register and submit (which will be posted soon):
Differences from the 2012 Contest:
Please note the following differences from the 2012 contest:
During the contest, KoreLogic will publish updated scores as often as possible.
After the contest ends, KoreLogic staff will validate each submission and will announce the winning teams on Sunday, (time TBD, but certainly before the DEFCON C&E Awards Ceremony). The eligible team with the highest score will be the winner. If there is a tie in total points, the team that submitted their entry first will place higher.
The winning teams will be required to write up their techniques / methodologies, describe the resources/tools used to crack the passwords, and describe any lessons learned.
At the conclusion of the contest, KoreLogic will:
KoreLogic will be giving away the following prizes for first, second, and third place in the "Professional" Devision:
We will be announcing more details soon. In the meantime, please contact firstname.lastname@example.org with any questions.
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