ShellOL - Challenge 6 - Best laid plans

You must perform a shell injection attack with a very restrictive blacklist.

Your objective is to read the contents of /etc/passwd.

PARAMETERS:
Injection Location - Command argument wrapped in quotes
Method - GET
Sanitization - Reject(high), no semicolons, pipes, ampersands, dollar signs, parens, backticks, or newlines
Output - Command results, errors shown, command executed is shown