I'm not seeing any messages on Twitter to my @kcbowhunter account. I wonder if you have to send me a friend request first to send a message?
But ebouteillon what you mention is not the encrypted flag... what you found is a decoy. Compare the location of the oxFFD9 EOI image marker with the size of the file. You can use the jpeg file I provided to see the location of the EIO (end of image) marker.
I meant to say you can use the Jpeg1.py python script I provided to easily see the location of the 0xffd9 marker (end of image marker) in the jpeg. Compare the offset to the EOI marker with the file size. Thanks for working on my challenge!
The encrypted payload is not one of the comments, it is hidden somewhere else in the jpeg file. Run the Jpeg1.py script I provided, not the offset to the 0XFFD9 end of image marker and compare that to the size of the file. You may also want to solve my MountainMan challenge first which has some similarity to this problem.