R3CTF 2026

R3CTF 2026 will mark the final Jeopardy-style edition in the R3CTF series.

Challenge categories:

This year, the categories will not be disclosed to participants in advance, but they may include, without limitation, Web, Crypto, Pwn, Reverse, Misc, Forensics, Blockchain, and more.

Sponsors:

Nebula Security - https://nebusec.ai/

OtterSec - https://osec.io/

Zellic - https://www.zellic.io/

Binary Ninja - https://binary.ninja/

Infra sponsored by goo.gle/ctfsponsorship

Support channel ->

https://discord.gg/rrZ22GfJpX

Official URL: https://ctf2026.r3kapig.com/

CTFtime URL: https://ctftime.org/event/3149/

Official prize text: 1st Place - $200

2nd Place - $100

3rd Place - $50

Writeup Prize:

- With AI-generated content becoming increasingly prevalent, we deeply value high-quality writeups that reflect participants’ own understanding and effort. To recognize outstanding contributions from the community, we will select ten exceptional human-written writeups and award each of them a USD 300 prize. To be eligible, the submitted writeup must be written entirely by humans, without the use of AI-generated content.

- Binary Ninja Writeup Prize:

In addition to the ten writeup prizes above, we will select two additional outstanding human-written writeups that demonstrate effective use of Binary Ninja. The author(s) of each selected writeup will receive one Binary Ninja Personal License.