HITCON 2016 Quals: %%% (web100)

Reading time ~1 minute

I opened the webpage from the challenge description: which resulted in Chrome showing SSL cert error: NET::ERR_CERT_AUTHORITY_INVALID.

I checked the CN of the SSL cert which was: very-secret-area-for-ctf.orange.tw so I created the following entry in my host file: very-secret-area-for-ctf.orange.tw

Then I opened the https://very-secret-area-for-ctf.orange.tw/ URL, which gave me the flag:

hitcon{hihihi, how 4re y0u today?}

0CTF 2017 Quals: Crypto challenges

*These challenges were solved by and the writeups were written by one of my teammates, @ngg.*# IntegrityThere was an encryption scheme, w...… Continue reading

0CTF 2017 Quals: Choices (reverse, 297pts)

Published on March 23, 2017

0CTF 2017 Quals: UploadCenter (pwn, 523pts)

Published on March 21, 2017