Our fourth BelkaCTF is now finished. We sincerely hope you enjoyed the competition, its plot and tasks. Thanks to every participant, and congratulations to March's winners:
Professional track: Vlad Roskov, Beomjun Park, Adam Mazack
Student track: Nisarg Suthar, Mohammad Al falaileh, Ryan Irving

📄 BelkaCTF #4: “Kidnapper Case” write-up

This time it was me who knocked on the Chief' door. It's afterhours now, so I was not surprised to pick up the sweet smell of cognac.

—Look, Chief. I found the kid's notes but…

—Encrypted, —growled the Chief, without allowing me to finish.

I acted impressed.

—No wonder you are the Chief!

The Chief showed no sign that he heard me.

—And you cannot find the password.

—Yes sir. You seem like you have an idea?

My boss smiled slyly.

—Do you know what a container is?

Tricky
750
Notipass
Solved 0 times

Q: What is the password to the boy's notes?

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