$ ctf42

🇺🇸 ImaginaryCTF

by [sqrt (-1) + 1] 🇺🇸 United States CTFtime flag format ictf{...}

ImaginaryCTF 2025 will now take place from September 5-7.

ImaginaryCTF 2025 is a cybersecurity CTF competition run by ImaginaryCTF with a variety of challenges for all skill levels, running from September 5-7. Teams will be challenged to discover vulnerabilities in websites, crack codes, and recover information through challenges in cryptography, binary exploitation, web exploitation, forensics, reversing, and more. We hope that you will learn something new from our challenges!

Archived challenges by category

Editions

EditionWeight WebPwnReverseCryptoForensicsMisc Total
2024 49.81 98109710 53
2023 34.52 41181076 46
2022 24.65 110812·· 31
2021 – 8292930·1 97