DEADFACE loves their vintage tech, but their "Echo Chamber" chat bot has a critical flaw from the old days. It echoes messages without sanitizing input, potentially leaking sensitive data. As a Turbo Tactical operative, connect to the remote service at echochamber.deadface.io:13337 and exploit it to reveal a hidden flag.
when we connect to the remote server it simply echoes back whatever we send, and because the challenge hints at a possible format-string vulnerability, a sensible test is to send the string %s to see how the server processes it.