Kiosk escape to shell

Option 4 gives a hint that special characters may cause errors, after trying to execute /bin/bash in between back ticks "`" it seems it works but we receive no output to the console so we try again to redirect the stdout to stderror

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Escaping to shell

Using back ticks can be used to execute shell comamnds but the output is being filtered, so to show the output we redirect the stdout to stderr

`/bin/bash 1>&2`

And we escape to the shell.

   ___                                                      _    
  / __|   _  _     __      __      ___     ___     ___     | |   
  \__ \  | +| |   / _|    / _|    / -_)   (_-<    (_-<     |_|   
  |___/   \_,_|   \__|_   \__|_   \___|   /__/_   /__/_   _(_)_  
_|"""""|_|"""""|_|"""""|_|"""""|_|"""""|_|"""""|_|"""""|_| """ | 
"`-0-0-'"`-0-0-'"`-0-0-'"`-0-0-'"`-0-0-'"`-0-0-'"`-0-0-'"`-0-0-' 

Type 'exit' to return to the menu.

shinny@9bf4b0fee057:~$

Solution