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Stage 4 - A E S T H E T I C #49

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stebbib opened this issue Aug 25, 2016 · 5 comments
Open

Stage 4 - A E S T H E T I C #49

stebbib opened this issue Aug 25, 2016 · 5 comments

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@stebbib
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stebbib commented Aug 25, 2016

Description

We found this mysterious gif, it's so beautiful but can you restore it?

aesthetic.gif

Solution

Flag is: ``

@stebbib
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stebbib commented Aug 25, 2016

Okay just used stegsolver realquick and was looking at each frame at a time. Think some clues are there.

bottom chunks seem to be pretty correct/solid. all of the frames seem to have mixed up chunks of a gif. Looking at individual frames gives the impression that each fram isn't a complete image them selves. like they could be joined into one or something. Some frames are even rotated.

@stebbib stebbib self-assigned this Aug 25, 2016
@ikornaselur
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When you say some frames are rotated, you mean whole frames? Or blocks of each frame?

@ikornaselur
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It would probably be valuable to look at just a single frame of the gif to begin with. The bottom row of blocks is definitely solid and "correct", we should be able to use that as a base to restore the frames.

@ikornaselur
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ikornaselur commented Aug 25, 2016

Okay this one is difficult. I believe we should rather focus on lower hanging fruits, since this one is 200 points and has only 7 solves.

But, the first 120ish frames are definitely inverted.

Here's is inverted again

The gif consists of 8x8 pixel blocks, for a total of 80x45 blocks. The bottom row is not broken, so 80x44 broken blocks.

Some of the blocks have been rotated, but looking just at the bottom row, you can see it's a video that's moving up (camera moving in and down), so that could be a hint on how each block is rotated.

I believe we need to analyze the blocks an rotate them correctly, then match them all together. If one frame isn't enough, each frame should be converted the same way.

I think this is too much of an effort at the moment.

@ikornaselur
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Around the middle of the gif, right after static and after it turned bright white for a moment, you can see only few blocks (others are whitened out), and the camera bobs up and down. This could be a hint of blocks that are in a correct place already.

@stebbib stebbib removed their assignment Aug 26, 2016
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