The second BelkaCTF: Drug Dealer Case is over! Thanks to every participant, and congratulations to this month's winners:
Professional track: Weihan Goh, Beomjun Park, Eric Kwan
Student track: Jaeheon Kim, Mohammad Al falaileh, Mohammed Hassan

📄 The official CTF write-up

📺 Official solution video

Added at 14:45 EDT: a screwup in the phone image detected. This one is incorrect password, shouldn’t be there. The challenges are still solvable just fine, just avoid this rabbit hole.


Understood, don't show again

“Well done!” – The Chief looked a bit happier than an hour ago when he came in. – “Things are starting to look up. Over the last hour, our lab guys inspected the scumbag’s backpack and confirmed there were traces of some pretty illegal drugs inside. – He pulls a crumpled pack of cigarettes from his shirt pocket, lights one up and takes a long drag – “Now that we know his name and that he has been in contact with these substances, is it possible to identify who he was talking to about drug delivery?” – Smoke fills the air.

Warmup
135
Supervisor
Solved 130 times

What is the phone number he reported to about drug delivery?
Format: +1234567890

Flag: