Loading...
The encrypted text we got given was
zmxhz3tkb2vzx3roaxnfzxzlbl9jb3vudf9hc19jcnlwdg9vb30=
Some fiddling around with the capitalisation of the base64 characters got us the actually-printable string
ZmxhZ3tkb2VzX3RoaXNfZXZlbl9jb3VudF9hc19jcnlwdG9vb30=
which decoded to yield the flag.
flag{does_this_even_count_as_cryptooo}