linkek — Cisco Type5 password crack with John The Ripper

In a nutshell:

I. Config file => passwd file (for John)

sed -n 's/[ :]/_/g; s/^(.{1,})_5_($1$[$./0-9A-Za-z]{27,31})_*$/1:2/p' < cisco-device-config > passwd

II. Start the process (nice 19 -> low priority, you can work on your computer..):

nice -n 19 john -incremental:lanman -session:cisco passwd

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