はじめに
備忘録です。
Find the flag!
nmapを実行。
$ nmap 10.10.182.176
Starting Nmap 7.60 ( https://nmap.org ) at 2024-08-03 05:21 BST
Nmap scan report for ip-10-10-182-176.eu-west-1.compute.internal (10.10.182.176)
Host is up (0.00012s latency).
Not shown: 997 closed ports
PORT STATE SERVICE
22/tcp open ssh
2222/tcp open EtherNetIP-1
31337/tcp open Elite
MAC Address: 02:18:15:B7:E5:2F (Unknown)
Nmap done: 1 IP address (1 host up) scanned in 1.81 seconds
31337ポートをブラウザで覗くと以下の内容が書いてあった。
In case I forget - user:pass
ubuntu:Dafdas!!/str0ng
このIDとパスワードをsshでつかってみる。
$ ssh ubuntu@10.10.182.176
The authenticity of host '10.10.182.176 (10.10.182.176)' can't be established.
ECDSA key fingerprint is SHA256:tD+Aiagv/4teueystsEl6q9ZNvNF9C8v+dsZj3fhbdQ.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.10.182.176' (ECDSA) to the list of known hosts.
ubuntu@10.10.182.176's password:
Welcome to Ubuntu 20.04.3 LTS (GNU/Linux 5.13.0-1014-aws x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
This system has been minimized by removing packages and content that are
not required on a system that users do not log into.
To restore this content, you can run the 'unminimize' command.
The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.
$ ls
$ cd ..
$ ls
ubuntu user
$ cd user
$ ls
flag.txt
$ cat *
flag{251f309497a18888dde5222761ea88e4}
あっさり見つかった。
flag{251f309497a18888dde5222761ea88e4}