Bridget’s Back!

Table of Contents

1. Overview
2. Background
3. Find The Flag
4. Conclusion

Overview

• Solved by: @siunam
• 655 solves / 100 points
• Author: Yo_Yo_Bro
• Overall difficulty for me (From 1-10 stars): ★☆☆☆☆☆☆☆☆☆

Background

Bridget’s travelling the globe and found this marvellous bridge, can you uncover where she took the photo from?

NOTE: Flag is case-insensitive and requires placing inside DUCTF{} wrapper! e.g DUCTF{a_b_c_d_example}

Author: Yo_Yo_Bro

Find The Flag

In this challenge, we can download a file:

┌[siunam♥Mercury]-(~/ctf/DownUnderCTF-2023/Misc/Bridget's-Back!)-[2023.09.05|19:00:36(HKT)]
└> file BridgetsBack.jpg  
BridgetsBack.jpg: JPEG image data, JFIF standard 1.01, resolution (DPI), density 96x96, segment length 16, Exif Standard: [TIFF image data, big-endian, direntries=4, xresolution=62, yresolution=70, resolutionunit=2, software=paint.net 5.0.9], baseline, precision 8, 4000x2923, components 3

In this image, it shows an image of a bridge.

Hmm… Let’s use reverse image search to try to search the bridge’s location.

To do so, I’ll use Google Lens:

Oh! Golden Gate Bridge??

Let’s go to Google Maps to find the exact location of the image:

Note: Hold Shift key and drag the map to move around.

After comparing the image and the map, I found that the exact location is “H. Dana Bowers Memorial Vista Point”:

• Flag: DUCTF{H._Dana_Bowers_Memorial_Vista_Point}

Conclusion

What we’ve learned:

1. Reverse image search