Cisco pix encrypted password decrypt

Cisco routers can be configured to store weak obfuscated passwords. This simple piece of JavaScript can be used to decode those passwords. But due to an implementation issue , it somehow ended up being a mere single iteration of SHA without salt. To crack it, we have to first convert it to the following john friendly format and save it in a file:.

Note that since we have 4 CPU cores, we can run john in 4 instances using --fork parameter:. From the above screenshot we can see that the average speed is around Hashcat recognizes this password type as hash mode To crack it, we can keep using the same john friendly format Then we can crack it like this using a dictionary, for example:.

Note that by using the -O parameter optimized kernels , we will greatly increase the speed. But it will also limit the password length to 31 characters. From the above screenshot we can see that the average speed is around 1.

Seems like cracking this hash with john is much faster in our case. This password type was introduced around and it is essentially a 1, iteration of MD5 hash with salt. The salt is 4 characters long 32 bits. For modern computers this is not difficult enough and thus in many cases it can be successfully cracked.

John the Ripper recognizes this password type as md5crypt. To crack it, we have to again first convert it to the following john friendly format and save it in a file:. From the above screenshot we can see that the average speed is around thousand password attempts per second. To crack it, we can keep using the same john friendly format. Active 3 years, 8 months ago. Viewed 93k times. Extra Credit: There are also the following lines with multiple usernames in it which i assume are the same format as above.

See below: Hope someone can help, Thanks! Improve this question. Add a comment. Active Oldest Votes.

You can repeat the process for blank If you've used oclHashcat-plus before, the following command worked perfectly to crack it on windows for me. Improve this answer.

D4M D4M 5 5 bronze badges. I already had the Crackstation list but it didn't play well with cain Hashcat's awesome. As mentioned in the question, i am NOT after a tool to reverse a type 7 password!

I am not sure what problem your having. Maybe it's a typo or an ancient version of Cain. Turns out it was just the dictionary attack that had issues with Cain. When I tried with the above method it worked as well. I am not sure if there is any rainbow table or reversing available for this. Eric G Eric G 9, 4 4 gold badges 30 30 silver badges 58 58 bronze badges. Unfortunately i don't have access to the device to run more system:running-config Please note there are two potentially different places i've sourced passwords from in the above question, one form the beginning of the config file and one from the VPN setup section.

Because the MD5 hash algorithm always produces the same output for the same given input, users can compare a hash of the source file with a newly created hash of the destination file to check that it is intact and unmodified. It is simply a fingerprint of the given input. However, it is a one-way transaction and as such it is almost impossible to reverse engineer an MD5 hash to retrieve the original string.

Search for:. Md5 Decrypter Password MD5 hashes are also used to ensure the data integrity of files.