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Challenge #22: Find the hidden key.


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#1 Icecube

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Posted 14 January 2012 - 02:20 PM

Challenge #22: Find the hidden key.
The key starts with an "r" as first character.
Try it here.

Attached Files



#2 Holmes.Sherlock

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Posted 14 January 2012 - 02:21 PM

Icecube,
Please also publish it under Challenge portal @ TLF

#3 Icecube

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Posted 14 January 2012 - 02:34 PM

Done:
http://tech.reboot.p.../challenges.php

#4 Holmes.Sherlock

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Posted 14 January 2012 - 02:35 PM

Done:
http://tech.reboot.p.../challenges.php

Please update your first post with the link to try out the challenge. Also I've sent a mail o the group. Please do read it. Thanks Icecube.

#5 AceInfinity

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Posted 15 January 2012 - 02:09 AM

I see in there a jump to an invalid address I believe from first few minutes of looking at it... Seems to be missing a few parts though.

#6 MichaelZ

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Posted 15 January 2012 - 07:24 AM

I guess this is no Word 2007/2010 or Open Office document. :heh:
So far I extracted a bitmap 9x9 pixel in size having an orange square with a small color gradient. I think it's too small to have some valuable information and I guess it's only a fill up at the end.

Many Greetings
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#7 MichaelZ

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Posted 15 January 2012 - 07:35 AM

orange square with a small color gradient

I have to correct myself. It's not a gradient (actually not possible with an image of that size) but its one pixel having color FFAA55 instead of FF7F27. I didn't notice before that IrfanView displays a smoothed image when zooming in. Yes, to bother with a challenge means learning a lot...

#8 pscEx

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Posted 15 January 2012 - 09:42 AM

I also yesterday extracted the bit map and thought:
What about MBR and AA55? :dubbio:
But that also did not bring me further.

Peter

#9 AceInfinity

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Posted 16 January 2012 - 04:29 AM

I also seen the 24 bit - 9x9 pixel bitmap. All of the pixels are #ff7f27, except for one pixel which is #ffaa55 indicated at offset 0x4E. "solve_this.txt" seems to be encrypted AES. I'm reading (LZMA:16 7zAES:19) but what's also interesting is these bytes here:

0x58 0x5C 0x3A

X: is familiar for me. When I had to repair my MBR the location from boot cmd prompt is indicated by X: but i'm not familiar with any windows booting that most of you are familiar with around here.

#10 pscEx

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Posted 16 January 2012 - 11:32 AM

I got a 16 characters long password, but input into the solution template gives a "try again" :frusty:

Peter

#11 Icecube

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Posted 16 January 2012 - 11:54 AM

@pscEx
The solution is a key, not a password. You only solved a part of the challenge.

#12 pscEx

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Posted 16 January 2012 - 12:00 PM

I got a 40 char key, also with "sorry"

Peter :frusty:

#13 Icecube

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Posted 16 January 2012 - 12:34 PM

@ pscEx
You still have to solve this last string.

#14 Holmes.Sherlock

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Posted 16 January 2012 - 12:35 PM

@ pscEx
You still have to solve this last string.

Let me understand, who fed this challenge to challenge portal, me or you?

#15 Icecube

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Posted 16 January 2012 - 12:44 PM

Let me understand, who fed this challenge to challenge portal, me or you?

I added it. I just tested that the solution works correctly.

#16 Holmes.Sherlock

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Posted 16 January 2012 - 12:47 PM

@pscEx

Please try to feed the solution to challenge portal as it will record your name as the challenge solver.

#17 pscEx

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Posted 16 January 2012 - 12:52 PM

That may take some time. I currently have no idea how convert the crazy string to a key ...

Peter

#18 Holmes.Sherlock

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Posted 16 January 2012 - 12:54 PM

That may take some time. I currently have no idea how convert the crazy string to a key ...

Peter

Sure, take your time. Just to let you know that the solution is working correctly in the challenge system as Icecube has tested.

#19 pscEx

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Posted 18 January 2012 - 09:41 AM

Solved :rofl:

Peter

#20 Holmes.Sherlock

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Posted 18 January 2012 - 10:04 AM

Solved :rofl:

Peter

Tried in the Challenge portal?

#21 pscEx

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Posted 18 January 2012 - 10:05 AM

Yes, I got 'correct'

Peter

#22 Holmes.Sherlock

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Posted 18 January 2012 - 10:06 AM

Yes, I got 'correct'

Peter

Congrats..... :2nd:

#23 Icecube

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Posted 18 January 2012 - 10:11 AM

@ pscEx
:1st:
I hope it was not too difficult, or was it?

#24 pscEx

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Posted 18 January 2012 - 10:16 AM

The most difficult was the last step.

After having solved this step, I'm angry about myself, having been so blind!

Peter

#25 AceInfinity

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Posted 21 January 2012 - 08:19 AM

I'm still taking an attempt to figure this out, I haven't looked at the challenge though for some time, congratulations pscEx! :)




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