I really do not understand what this is about, but my cousin told me that once he managed to got a flag out of this. I was able to copy from my cousin's shell parts of his interactions with the server. You can find them in interaction1.txt and interaction2.txt. Unfortunately, they are incomplete.

nooombers.challenges.ooo 8765

interaction1.txt f6aeae3c35be2f8a2d098d076e4bf7ac9f5ece24ddc88c9e7fb43016e049b89a

interaction2.txt 6fd5facfefdbd20b82d651520edf56713ef585bad1b78788db06c4208d2da321