Forgery

Writeup by: USERNAME

Team: OnlyFeet

Writeup URL: GitHub

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Felicity and Cisco would like to hire you as an intern for a new security company that they are forming. They have given you a black box signature verification system to test out and see if you can forge a signature. Forge it and you will get a passphrase to be hired!
nc crypto.chal.csaw.io 5006

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}