DIVER OSINT CTF 2026 "buyout" Writeup

This article was automatically translated from Japanese by AI.

Challenge

DIVER OSINT CTF 2026 “buyout”

Solution

Searching for terms such as Zambia 2024 large fraud base led to a BBC article and other reports. These identified the company as Golden Top Support Services and placed its base in the Roma area, an upscale suburb of Lusaka. Searching for the company’s name led to a Facebook post with information about the building’s exterior and roof.

I searched Google Maps for hotels around Roma, Lusaka, but could not find a matching hotel. I then looked beyond Google Maps and found Le Dolphin’s Grand Paradiso on Yandex Maps. Based on photos of the entrance fence, the roof color, and other details, I identified it as the same building. Searching for the hotel’s name also led to interior photos on Skyscanner, which supported the identification.

Source: Yandex Maps, September 11, 2026

Flag

Diver26{Le Dolphin's Grand Paradiso}