$ ctf42

#geolocation CTF challenges

10 CTF challenges using geolocation from 6 CTFs (2019–2025), 10 with writeups. Mostly OSINT (90%) and Crypto (10%).

OSINT · 9 Crypto · 1

Often combined with

#osint 6 #reverse-image-search 2 #google-maps-street-view 1 #signage-osint 1 #google-maps 1 #social-media-osint 1 #gps-coordinates 1

Challenges

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Challenge CTF Weight Category Has
Nikolai_2 UMDCTF 2021 – OSINT files wu 3
Justin_2 UMDCTF 2021 – OSINT files wu 3
Vacation UMDCTF 2021 – OSINT files wu 3
Traveling UMDCTF 2021 – OSINT files wu 3
Multiplayer UMassCTF 2025 48.38 OSINT files wu 1
Hidden_Snack_Stop SwampCTF 2024 40.40 OSINT files wu 1
Mr-Worldwide picoCTF 2019 – Crypto files wu 1
Trackdown 1337UP 2024 – OSINT files wu 1
Trackdown_2 1337UP 2024 – OSINT files wu 1
Tinker_Tailor_Solider_Spy JerseyCTF 2025 24.73 OSINT files wu 1