Rating:

Hi All,

We can see in the photo some cloudy day, or just a little bit blue sky with clouds. Next, there is some sea or lake, cars in the parking lot. The photo could have been taken from the road while traveling:

![](https://miro.medium.com/v2/resize:fit:640/format:webp/1*0_TyViSeN7MNPJc0DfWtgQ.png)

Image from the attachment, source: DownUnderCTF 2024 — offtheramp

This is OSINT challenge. One of the first steps as an action, could be checking metadata of this file.

You can make this in many ways, ie.: with the [Exiftool](https://github.com/exiftool/exiftool) or https://exifinfo.org/

We’re lucky! Data not erased:

![](https://miro.medium.com/v2/resize:fit:720/format:webp/1*vcI22ojDKr3ZcX7m2d4sgw.png)

Exiftool results, source: DownUnderCTF 2024

GPS coordinates are a strong ‘handle’ for us.

To convert the given GPS coordinates to a format that can be used with Google Maps and similar services, you need to convert [the degrees, minutes, and seconds (DMS) format](https://en.wikipedia.org/wiki/Degree_(angle)) to [decimal degrees (DD)](https://en.wikipedia.org/wiki/Decimal_degrees). Here’s how you can do it:

Given Coordinates
Latitude: 38 degrees 9' 15.95" S
Longitude: 145 degrees 6' 29.69" E
Conversion Formula
The formula to convert DMS to DD is:

![](https://miro.medium.com/v2/resize:fit:640/format:webp/1*joR6UYGkdLHWTIt5IcFgAQ.png)

Latitude Conversion
Degrees: 38
Minutes: 9
Seconds: 15.95

![](https://miro.medium.com/v2/resize:fit:640/format:webp/1*UK7lsV2eHoDvhm37TgLBlg.png)

Since the latitude is South, it will be negative:

![](https://miro.medium.com/v2/resize:fit:626/format:webp/1*8G-2g95YetI88PqL8mUr2g.png)

Longitude Conversion
Degrees: 145
Minutes: 6
Seconds: 29.69

![](https://miro.medium.com/v2/resize:fit:640/format:webp/1*EkBy2LIRqlbPDSRn89yVxA.png)

Since the longitude is East, it will be positive:

![](https://miro.medium.com/v2/resize:fit:640/format:webp/1*38L46aqahsg9R9VCGcX9tQ.png)

Final Coordinates for Google Maps
Latitude: -38.15443056
Longitude: 145.10824722

![](https://miro.medium.com/v2/resize:fit:720/format:webp/1*BjgGUlURMcS5c8HIULgHZQ.png)

Almost the final answer! Source: DownUnderCTF 2024 & Google Maps

Taking into account the perspective, it looks very promising!

The title is a hint to get proper name of this structure (keyword: ramp).

Flag — solution: **DUCTF{olivers_hill_boat_ramp}**

I hope you enjoy!

Original writeup (https://medium.com/@embossdotar/ctf-writeup-downunderctf-2024-offtheramp-63cb06bdc6c7).