Barbara Liskov

Challenge Description

Challenge Attachment

2KB

BarbaraLiskov.pyc

Open

Getting the code

For the .pyc binaries ("compiled" python) you should start trying to extract the original python code:

uncompyle6 binary.pyc  > decompiled.py

we found nothing here

Hex Dump using xxd

let's dump the binary hex using the command xxd

scrolling down we find a base64 encoded string

Y2hjdGZ7dV9uM3Yzcl9uMzNkXzBwdDFtNGxfcDNyZjBybTRuYzMsX3VfbjMzZF9nMDBkLTNuMHVnaF9wM3JmMHJtNG5jM30=

let's decode it

Flag

chctf{u_n3v3r_n33d_0pt1m4l_p3rf0rm4nc3,_u_n33d_g00d-3n0ugh_p3rf0rm4nc3}