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So Meta

Problem
Find the flag in this picture. You can also find the file in /problems/so-meta_3_6dc950904c3ee41f324ae8d9f142f2b8.
​Image​
Solution
1.The flag is hidden in the EXIF data of the image. Use exiftool and grep:
 $ exiftool pico_img.png | grep Artist
 Artist                          : picoCTF{s0_m3ta_43f253bb}
2.​Katana can solve this challenge:
 Target completed in 0.21 seconds after 1847 unit cases
 grep(/data/targets/pico_img.png) ➜ 
 picoCTF{s0_m3ta_43f253bb} - (copied)
Flag
picoCTF{s0_m3ta_43f253bb}

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Last modified 2yr ago