Warning: This post contains a solution!
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1.) you want to see a possible alternative solution or
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Connect to the server using the following credentials:
Let us have a look at the files in the current folder:
bandit1@bandit:~$ ls -
Just on file named "-" is available.
The password for the user of the next level is saved in this file, so let us output the content of it:
bandit1@bandit:~$ cat ./- CV1DtqXWVFXTvM2F0k09SHz0YwRINYA9