old-31 -- Server Connection

URL: https://webhacking.kr/challenge/web-16/?server=MY_PULBIC_IP

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The challenge connects to us on open port and gives us the flag.

Setup port forwarding:

old-31.png

➜ ncat -lvnp 4444
Ncat: Version 7.92 ( https://nmap.org/ncat )
Ncat: Listening on :::4444
Ncat: Listening on 0.0.0.0:4444
Ncat: Connection from 202.182.106.159.
Ncat: Connection from 202.182.106.159:33442.
GET /FLAG{i_have_a_big_and_beautiful_server} HTTP/1.0
Host: your_ip

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Alternatively you could have used ngrok since we are allowed to specify the server IP.

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