OSINT
satellite_imagery
1/21/2026
by SHA-warmane
Swimmer-CTF
canvas
Challenge:satellite_imagery
Difficulty:Unknown
Author:SHA-warmane
Description:
When was this satellite image captured? Please answer in the `YYYY/MM/DD` format. For example, if the date was January 17, 2026, the flag would be `SWIMMER{2026/01/17}`.
Flag: SWIMMER{2025/04/18}
By searching for another image with the airport name, we confirm the rectangle and the exact name of the airport.
By searching Google Earth using the airport name and filtering the images taken in 2025, we can obtain the exact date.
Below the image, we can see the shot taken from Google Earth with a date.
By doing an image search on Google, we find an article mentioning “New Chitose Airport in Hokkaido, Japan,” where we can see the rectangle not far from the planes.
By doing an image search on Google, we find an article mentioning “New Chitose Airport in Hokkaido, Japan,” where we can see the rectangle not far from the planes.
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.