Information#
Version#
By | Version | Comment |
---|---|---|
noraj | 1.0 | Creation |
CTF#
- Name : RC3 CTF 2016
- Website : http://ctf.rc3.club/
- Type : Online
- Format : Jeopardy
- CTF Time : link
Description#
Welcome to the "Bridge of Cyber"! It's the same concept as the "Bridge of Death" in Holy Grail. Our DNS servers aren't very good at their job because they ask more questions then they answer. Let's see if you can get the flag from our DNS.
Nameserver: ns-920.awsdns-51.net
Domain: misc200.ctf.rc3.club
Solution#
What we know:
- Domain:
misc200.ctf.rc3.club
- Name Server:
ns-920.awsdns-51.net
- We look for questions so probably TXT records
1 | [noraj@rawsec]ββββββββββββββββββββββββββββββββββββββββββββββββββ[~/CTF/RC3/2016] |
So we get the first question: "What is the air-speed velocity of an unladen swallow" is a question from "Bridge of Death" in Holy Grail of Monty Python.
The answer is:
What do you mean? An African or European swallow?
The first idea that matched "How to send the answer" was by prefixing the answer to the domain.
1 | [noraj@rawsec]ββββββββββββββββββββββββββββββββββββββββββββββββββ[~/CTF/RC3/2016] |
The roundest knight at king Arthurβs round table was Sir Cumference. He acquired his size from too much pi.
1 | [noraj@rawsec]ββββββββββββββββββββββββββββββββββββββββββββββββββ[~/CTF/RC3/2016] |
Tomorrow
1 | [noraj@rawsec]ββββββββββββββββββββββββββββββββββββββββββββββββββ[~/CTF/RC3/2016] |
My favorite things in life don't cost any money. It's really clear that the most precious resource we all have is time.
1 | [noraj@rawsec]ββββββββββββββββββββββββββββββββββββββββββββββββββ[~/CTF/RC3/2016] |
So we get the flag: RC3-2016-cyb3rxr05
.
Or may be it was possible to do it with african
:
1 | [noraj@rawsec]ββββββββββββββββββββββββββββββββββββββββββββββββββ[~/CTF/RC3/2016] |