Tags: osint 

Rating:

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/62ecbeb9-03cb-44cf-91b5-a0535ffa6bce)

Using exiftool I found that it was in San Francisco. The bridge looked familiar.

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/0bf4e958-3dce-4c9c-b73b-18b4ba3bddaf)

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/1fd9a55c-0db6-4d7a-91f4-8fc7ff7e5692)

It has to be one of these 3 bridges:

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/96ac7dd7-5097-4500-89f0-8f10746cc383)

The far right bridge did not look anything like it.

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/b2cab3f6-2784-4dda-a859-9423023b5774)

The far left Golden Gate Bridge was not it either.

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/227b927f-fafa-46e6-84b4-fe9a303dc171)

The middle bridge (Oakland Bay Bridge) had the exact same structure.

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/d2676fbb-017a-4bf5-9a32-df5667c61600)

Looking at the angle,

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/33b5e3dc-16ab-4dee-abd2-4a23af410995)

It has to be within the rectangle region. At the end of the very straight long road is a building.

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/9f36ed7a-64d9-43cc-9218-3d2db335c604)

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/11ecf37b-5fbd-412f-a93a-e240eb48f417)

The building is a pier but there are many of them:

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/eaf08de2-0824-4bc0-a327-cd018cdcd8c7)

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/473f3551-eb8c-4847-abd2-1f9f7a7063e0)

At pier 9, there was a straight road:

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/3b9cfa3f-8014-4bfa-ad26-17656bfa5382)

It seems that it could be the Vallejo steps:

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/cd5f4216-6767-4893-b134-de86243e2a54)

Yes it is:

![image](https://github.com/jeromepalayoor/ctf-archive-hub/assets/63996033/b7f01b00-16e0-47c5-9961-fcd4792f4174)

Flag: `n00bz{Vallejo_Steps}`

Original writeup (https://jp-ch.gq/osint/n00bzCTF-2023.html#lost).