OSINT - Ringback to your attacker

Challenge description:

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Solution:

First of all, thanks to my teammate KOOLI, because he solved most of this challenge ?

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We were given an ip address in the challenge description (139.83.9.11)

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To make a long story short, I will mention the solution directly:

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My teammate found a geographic location when he checked the "Historical Whois":

(38.129775 -6.976331)

(https://stat.ripe.net/widget/historical-whois#w.resource=139.83.9.11%2F32&w.time=2020-10-18T18%3A02%3A19)

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I checked the Google Maps Street View there, and I found the number:

(https://www.google.com/maps/@38.1297321,-6.976297,3a,23.7y,323.94h,105.09t/data=!3m7!1e1!3m5!1s3shX9SWSVB1hYw1qdLNPTg!2e0!6s%2F%2Fgeo1.ggpht.com%2Fcbk%3Fpanoid%3D3shX9SWSVB1hYw1qdLNPTg%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D352.73495%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656)

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flag{964035528}

Original writeup (https://github.com/Cyb3rDoctor/e-Jornadas_CTF/blob/main/Ringback_to_your_attacker.md).