No more guessing! Upload an image, and our backdoored custom Vision Transformer will tell you if it contains a part of the flag for this challenge!

ai-isthisaflag-zj7mxux2.spbctf.com/

Source code: is-this-a-flag_71252e5.tar.gz

Hints added at 16:30 UTC:
1. The author’s solution does not include any training/fine-tuning/adversarial attacks
2. The ‘reverse’ tag fits in every sense of the word
3. To solve the task you would require figuring out how exactly the backdoor works