ctf-writeup/2023/CTF After Dark - Winter 2023/Star Poet Blog
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README.md feat: grouped the challs 2024-01-09 16:59:32 +07:00

README.md

Star Poet Blog

oh dear... someone finding my password.txt i could not bear... but no fear... encrypted it i did to make it unclear... (*note: flag is all lowercase). Visit https://star-poet-blog.acmcyber.com.

About the Challenge

We were given a plain website like this

preview_1

If we open the poems link, the website given us some poem i think? (The endpoint is https://web/archive/annabel_lee.txt)

preview_2

How to Solve?

If we check the description of the flag, we need to read the content of password.txt. So we can easily just access https://star-poet-blog.acmcyber.com/archive/password.txt

flag

Im using dcode.fr website to decipher the flag cipher but the tool didn't output anything. And then I tried to explore the website and I found an interesting information

cipher

So to get the flag, we need to explore all the poem on the website and we need each part of the flag. For example 1337 that means

  • Poem: 1
  • Stanza: 3
  • Line: 3
  • Word: 7

And then we know the first part of the flag is sepulchre. Try to find all the flag parts and we will get the final flag

flag{sepulchre_tombstone_spirit_grains_nevermore}