Master Collection dead drop – Amsterdam
Update: This drop has been found.
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The latest software drop is now up for grabs in the wonderful city of Amsterdam. I’ve upped the ante on the difficulty this time as there are so many talented Flashers in town at the moment for FITC. The location can be revealed by finding the message embedded into the this image file. This was not done with any existing tool and instead was done by me using some custom ActionScript. This method of hiding messages, known as digital steganography, is a widely used technique for concealing information. The method I used is known as LSB steganography and only the last bit was manipulated in this case. That is all the information you get. The software is for PC but you will be able to exchange for a Mac version if you need to. |
Good luck Amsterdam!
Lee
I wish there only were 1 country in the world so everyone could get anywhere.
I was not allowed in the hotel and they were not pleased by it… Maybe I should have kept my mouth shut but they were looking at me as if I was some sort of terrorist … So maybe put a message somewhere else…
Den Bosh. In Den Bosh !?
Den Bosch sorry
The last bit of each pixel? Or just the last bit of the padding?
Hey Lee, are you coming to England any time soon? I’ve been following your dead drops and I’d really like a crack at it myself!
You certainly have upped the ante Lee!
Jono
@Stu I’ll be there later next for Flash Camp
nearly got it, but seems like someone came through before. Nice game, it was fun
@kelsolaar Nobody has found it yet! Don’t assume that someone has found it. If you retrieved the message from the image make sure you read it carefully.
He keeps asking me about some password….
Awesome stuff, Lee!
Would you consider doing a tutorial on digital steganography? I would be very interested in seeing your approach as would my photographer clinets…
I find :
—[ GPS location (52.370067, 4.896679) - Wall to the left of room 617 - Need UV ]——–
I’am french and i’am far… Sniff…
This is really cool!
If only you would come to Kentucky!
Danny
@Cdic Very good. How did you go about extracting the message?
It’s only a 13 minute walk from the FITC Amsterdam, too bad… I don’t want to miss the session w/ Mike Chambers.
I think we’d all be very interested to learn how Cdic extracted the message = )
ugh. very far from michigan. nothing ever happens here, except cold weather and unemployment. drop one in the D!
Still no claims? Considering going over there with some sort of cunning plan to get in
I’am shy to say that i search on the net about this algorythm.
I tryed some tools in strange language.
I tried a software call WbStego.
I opened the result on a text editor and by changing the encoding i discovered this peace of text.
http://maps.google.fr/maps?f=q&source=s_q&hl=fr&geocode=&q=52.370067,+4.896679&sll=48.859746,2.351074&sspn=0.18228,0.30899&g=Paris&ie=UTF8&ll=52.370014,4.896787&spn=0.000661,0.001207&t=h&z=20
I agree with Bo and would love a brief tutorial on digital stenography.
Thanks,
-Adam
Hmm ok so the thing now is to think of some A-team style scam to get my ass inside that hotel
@Cdic Great work. Somebody else in Amsterdam figured it out using a similar tool. I will be posting the tool I created along with the source in the next couple of days.
Just to clarify, the software has still not been picked up. Also don’t assume that this is the actual location of the software.
@Sander There is no security at all. Just come in and go up the elevator. Marien made the mistake of asking permission.
You’re hint is ‘need UV’, so there’s an other clue on the wall.
Too bad I don’t have a UV light.
Good luck!
Lee, i try to make the clairvoyant….
I’am sure you put an indice on a Reverberi ( sorry for my english )
I seek as Lycos… grrrr
Ruse Lee.
I thinked about UV glasses but maybe Lee draw the message on the wall using a hidden ink to display his message !
You can try my steganography tool at http://leebrimelow.com/stego/stego.html. Load in the BMP to see the extracted message.
Figuring out where to ‘find’ a UV flashlight asap
lol.. used that url this morning during your keynote presentation.. wise move to password protect it untill now
we re stuck at the machine since two hours. what to do?
I went back with a UV lamp to read the message but maybe i’ve triggered someone at the hotel. Since i was kinda stupid to ask this morning…
So I think someone from the hotel must have noticed it or something, there’s nothing under the sixth floor ice machine or on any other floor (checked every ice system there was in the hotel). Also not under the cooling system outside (door outside the sixth floor near ice machine) Or did i just miss something? Or maybe it’s already found… It was very fun doing it but i guess i’m not the lucky (or smartest;-) one.
PS you can leave any cluess out of this message when you post it or maybe not post it at all…
Hmm, just seeing the message that it has been found…who found it, Kelsolaar, i hope since we teammed up? And where was it? I’m very courious
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