csaw21

Writeups for CSAW 2021 CTF

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RSA Pop Quiz

Writeup by: USERNAME

Team: OnlyFeet

Writeup URL: GitHub


Your crypto professor is back again! After having taught you some things about RSA, they have sprung another pop quiz. According to them, it is harder and longer. You should still be able to crack it, right? nc crypto.chal.csaw.io 5008

Initial Research

Word.

$ echo 'thingz'
thingz

Version Mismatches

Wordsz.

some output

Ancient History or Stegosarus Time

Moar Words

$ cat commands.txt
commands1
$ nmap 1.2.3.4
...

Victory

Submit the flag and claim the points:

flag{flag-goes-here}