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CTCTF 2015: Patience

Problem

Points: 35

Description:

Hint:

Sometimes the obvious isn't the answer

Solution

One's first instinct would be to scan this barcode. However, this image is a GIF (Graphics Interchange Format), which means that it can handle animation. The program displaying the GIF would draw several, successive still frames to create the illusion of motion. We used this tool to separate this GIF into its frames. At the very end is the 100th frame, which contains the flag:

Flag: not_the_barcode

Other Resources

  • None.