Description:

For your entertainment, we also provide you with some lovely music by a German rapper called Kool-SaV-aaS to listen to while working on this challenge.

(If it’s HTTP then it’s web.)

Download:

SaV-ls-l-aaS-1a56bcc537c44485.tar.xz (12.3 KiB)

Connection:

url='http://78.47.240.226:60601' && ip=$(curl -s "$url/ip") && sig=$(curl -s -d "cmd=ls -l&ip=$ip" "$url/sign") && curl --data-urlencode "signature=$sig" "$url/exec"