Lessons Learned extracting and decompressing files using the following tools: file, xxd -r, gunzip, bunsip2, and tar -xf Logging in On a kali vm/ linux machine Type: ssh bandit12@bandit.labs.overthewire.org -p 2220 5Te8Y4drgCRfCx8ugdwuEX8KFC6k2EUu Completing The Challenge The Goal: The password for the next level is stored in the file data.txt , which is a hexdump of a file that has been repeatedly compressed. For this level it may be useful to create a directory under /tmp in which you can work using mkdir. For example: mkdir /tmp/myname123. Then copy the datafile using cp, and rename it using mv (read the manpages!) The Solution: Revamped: I decided to write a bash file that solves the problem. mkdir /tmp/a_name/ mv data.txt /tmp/a_name ...