Undutmaning 2026
A CTF created as a joint effort between Sweden's intelligence organizations: * Swedish Military Intelligence and Security Service (MUST) * Swedish Security Services (SÄPO) * National Defence Radio Establishment (FRA)
The CTF will consist of 24 challenges and will be open for 8 hours, between 12:00 and 20:00 local time.
The CTF is not a first-blood competition but uses weight based scoring.
Categories: crypto, web, pwn, reverse, forensics, programming, misc
CTF information, challenge descriptions, etc. will be presented mainly in Swedish.
Web 3
| Challenge | Has |
|---|---|
| Fraga_fisken | files |
| Recycling | files |
| Undervattensgalleriet | files |
Pwn 2
| Challenge | Has |
|---|---|
| Flytvast | files |
| GIF_Splitter | files |
Reverse 3
| Challenge | Has |
|---|---|
| Ett_till_pajat_fonster | files |
| Manifest_deepthingy | files |
| Skattkistan | files |
Crypto 2
| Challenge | Has |
|---|---|
| Infekterad_BIOS | files |
| Undervattensstrommar | files |
Forensics 3
| Challenge | Has |
|---|---|
| Kapten_Strang | files |
| Sharklocker | files |
| Vagor_under_vattnet | files |
Misc 3
| Challenge | Has |
|---|---|
| Atkomst_nekad | files |
| echo | files |
| Deep_Blue_Sea | files |
OSINT 2
| Challenge | Has |
|---|---|
| Flaskpost_fran_kusten | files |
| Grundare | files |