davidbuchanan314 / ambiguous-png-packer Goto Github PK

Hi @DavidBuchanan314 :
Thank you for providing such an interesting project.
Now there is a question. How to restore the ambiguous png to original images? Or some way to display the "apple image" on another(no-apple device) platform?

seems to me you might be able to make a case for apple's bug bounty program: https://developer.apple.com/security-bounty/

In Safari 15.1 on macOS 10.15.7, I'm seeing "Hello Apple", but the picture is of the PC.

Can anyone please give me link to any tutorial of how to use it?
Thanks

I was wondering how I can replicate this with different reference images. Do I need to modify the python code in any way to match the images?

$ python pack.py 1.png 2.png out.png
Traceback (most recent call last):
  File "pack.py", line 186, in <module>
    main(*sys.argv[1:4])
  File "pack.py", line 120, in main
    b += acomp
TypeError: can't concat bool to bytes

The example runs fine on windows, but it fails to run with other pictures. Are there any special requirements for pictures?

It seems if the input images are fairly detailed the output image ends up with a lot of artifacting, nearly to the point of destroying the image depending on the input. Is this a side effect of the exploit or a bug / something on my end? I notice your example images have some artifacting, but not nearly as much as I'm seeing

.

I can confirm that the race condition also happens on mobile Safari.

Sorry if I just misunderstood something,
Is there currently any way to generate arbitrary images with the race condition?
I couldn't find it.