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OSINT CTF challenges

685 OSINT CTF challenges from 134 CTFs (2019–2026), 33 with writeups.

Top osint techniques

#osint 12 #geolocation 9 #reverse-image-search 5 #image-geolocation 2 #social-media-osint 2 #exif-metadata-comment 1 #google-maps-street-view 1 #google-maps 1 #signage-osint 1 #exif-metadata 1 #image-geolocation-osint 1 #log-analysis 1

Challenges

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Challenge CTF Weight Has
High_Performance UMassCTF 2026 65.95 files
Hometown_Hero_1 BYUCTF 2026 – files
Hometown_Hero_2 BYUCTF 2026 – files
Hometown_Hero_3 BYUCTF 2026 – files
Hometown_Hero_4 BYUCTF 2026 – files
Hometown_Hero_5 BYUCTF 2026 – files
How_to_make_a_local_happy KubSTU 2026 24.83 files
IMPORTANT_DEBRIS LYKNCTF 2026 – files
IRIS_OUT CPCTF 2026 – files
Identification_number Axiom 2026 – files
Im_Bassing_It TexSAW 2026 41.59 files
Impostor CTF@AC 2026 Quals – files
In_the_mountains DUCKERZ 2026 – files
In_the_tower_of_nowhere TaipanByte 2026 – files
InfoSec_hangout KubSTU 2026 24.83 files
Internal_investigation TaipanByte 2026 – files
Internet_RabbitHole BITSCTF 2026 – files
Island TaipanByte 2026 – files
Island_Boy BoroCTF 2026 – files
Its_So_Easy BoroCTF 2026 – files
Journey ApoorvCTF 2026 24.10 files
Just_A_Tree TexSAW 2026 41.59 files
Lake_of_Doom_and_Despair BoroCTF 2026 – files
Latte_art KubSTU 2026 24.83 files
Left_Behind upCTF 2026 24.42 files
LightHouse TaipanByte 2026 – files
Liminal_Memories BoroCTF 2026 – files
Little_Jimmy V1T 2026 22.14 files
Locksmith DawgCTF 2026 66.64 files
Looking_through CryptoNite 2026 22.11 files
Lost_Media UIUCTF 2026 – files
Lost_Signal JerseyCTF 2026 37.00 files
Love_is KubSTU 2026 24.83 files
MOM_GET_THE_CAMERA BKCTF 2026 – files
Mansion BoroCTF 2026 – files
Map_Detective 0xV01D 2026 V2 19.48 files
Melankonimir FortID 2026 45.00 files
Midnight_Snack ScriptCTF 2026 – files
Minecraftsint BoroCTF 2026 – files
Mirror TaipanByte 2026 – files