exploit.py

 #!/usr/bin/python3
 # Depends on pwntools. In kali, install via:
 #    sudo apt install python3-pwntools
 # Configure: change the IP address passed to the remote function.
 # Run:  python3 exploit.py

 # Library
 from pwn import *

 # Enable debug so that all received data is printed.
 context.log_level = 'debug'

 # Open connection to a remote process.
 r    = remote('83.136.255.205', 41685)

 # When prompted, enter 'y'.
 r.recvuntil(b'Are you ready? (y/n) ')
 r.sendline(b'y')

 # Function that will map a scenario to STOP, DROP or ROLL
 def mapit(scenario):
     if scenario == b'GORGE':
         return b'STOP'
     if scenario == b'PHREAK':
         return b'DROP'
     if scenario == b'FIRE':
         return b'ROLL'

 # Keep looping for ever. Alternatively, we could have explicitly looped until the flag is received
 while True:
     # Keep reading lines until a line is received containing at least one of GORGE, PHREAK or FIRE
     scenarios = r.recvline_contains(('GORGE','PHREAK','FIRE'))
     log.debug(f"scenarios: {scenarios}")

     # Keeep reading bytes until the given prompt.
     r.recvuntil(b'What do you do? ')

     # Split the received scenarios by comma.
     items = scenarios.split(b', ')

     # Map each scenario to one of STOP, DROP or ROLL
     instructions = map(mapit, items)

     # Join the instructions together, separated by a dash
     response = b'-'.join(instructions)

     # Send the response
     r.sendline(response)