Extraterrestrial Persistence

Personal Rating: Very Easy

We have a .sh script where a base64 string is decoded. The content of that contained the flag.

echo "W1VuaXRdCkRlc2NyaXB0aW9uPUhUQnt0aDNzM180bDEzblNfNHIzX3MwMDAwMF9iNHMxY30KQWZ0ZXI9bmV0d29yay50YXJnZXQgbmV0d29yay1vbmxpbmUudGFyZ2V0CgpbU2VydmljZV0KVHlwZT1vbmVzaG90ClJlbWFpbkFmdGVyRXhpdD15ZXMKCkV4ZWNTdGFydD0vdXNyL2xvY2FsL2Jpbi9zZXJ2aWNlCkV4ZWNTdG9wPS91c3IvbG9jYWwvYmluL3NlcnZpY2UKCltJbnN0YWxsXQpXYW50ZWRCeT1tdWx0aS11c2VyLnRhcmdldA==" | base64 -d

[Unit]
Description=HTB{th3s3_4l13nS_4r3_s00000_b4s1c}
After=network.target network-online.target

[Service]
Type=oneshot
RemainAfterExit=yes

ExecStart=/usr/local/bin/service
ExecStop=/usr/local/bin/service

[Install]
WantedBy=multi-user.target

HTB{th3s3_4l13nS_4r3_s00000_b4s1c}