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1014 B
1014 B
+++ author = "Maik de Kruif" title = "Challenge 1 - AdventOfCTF" date = 2020-12-02T17:27:25+01:00 description = "Challenge 1 of AdventOfCTF." tags = [ "AdventOfCTF", "challenge", "ctf", "hacking", "writeup", ] categories = [ "ctf", "writeups", "hacking", ] +++
- Points: 100
Description
All starts should be easy
Visit https://01.adventofctf.com to start the challenge.
Solution
When taking a look at the source we find the following comment:
<!-- This is an odd encoded thing right? YWR2ZW50X29mX2N0Zl9pc19oZXJl -->
If we then use base64 to decode this string we get advent_of_ctf_is_here.
> echo "YWR2ZW50X29mX2N0Zl9pc19oZXJl" | base64 -d
advent_of_ctf_is_here
We can then enter this string on the challenge website after which it will give us the flag: NOVI{L3T_7H3_M0NTH_0F_FUN_START}.
This flag can then be submitted for the challenge.