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Bcrypt is a popular 184-bit password hashing function designed by Niels Provos and David Mazières in 1999. It is based on blowfish cipher. It is default password hashing algorithm for OpenBSD and other OSes like SUSE Linux.
An Bcrypt hash entry for a password is provided in digest.txt file. The password is either taken from the dictionary or generated using the password policy. The digest.txt file and the dictionary file "1000000-password-seclists.txt" are present in the user's home directory.
Objective: Recover the password
If the Dictionary attack fails then the password policy is:
- Password length is less than 6 characters i.e. 0 < length < 4
- Password can only contain characters from this character set: a-z, 0-9
The following activities are strictly prohibited on this website unless otherwise explicitly stated as allowed in the mission statement:
- Using automated scanners
- Using brute force attacks
- Denial of Service attacks
- Attacking other student machines in challenges where you might achieve a shell on the vulnerable system
- Attacking the lab infrastructure
Users violating the above will be either temporarily or permanently banned from the website.
If you are unsure about an activity, then please contact support to confirm that it is allowed on our website.
Technical Support for this Lab:
There is a reason we provide unlimited lab time: you can take as much time as you need to solve a lab. However, we realize that sometimes hints might be necessary to keep you motivated!
We currently provide technical support limited to:
- Giving hints for a lab exercise
- In rare circumstances, if you have totally given up (NO!!!) then tell you how to solve it. This will be limited to sharing the solution video or lab report
- A lab exercise fails to load or has errors in it
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