csaw21

Writeups for CSAW 2021 CTF

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ECC Pop Quiz

Writeup by: USERNAME

Team: OnlyFeet

Writeup URL: GitHub


Your crypto professor has taught y'all about ECC and now, here's a pop quiz regarding some of the attacks on it. See if you can pass the quiz!

nc crypto.chal.csaw.io 5002

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}