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You are here: Home arrow Ethical Hacking Discussions and Related Certificationsarrow Programmingarrow Want to be a spy?
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May 22, 2013, 06:21:09 AM *
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Author Topic: Want to be a spy?  (Read 11794 times)
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alan
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« on: December 01, 2011, 12:14:26 PM »
GCHQ are apparently looking to hire computer experts and have created a challenge. It doesn't look easy, but take a punt!

http://www.canyoucrackit.co.uk/
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eth3real
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« Reply #1 on: December 01, 2011, 12:52:11 PM »
As a marketing technique, it is amazingly effective for their target audience. I'm so intrigued, I know I'm going to take a crack at it before time runs out.

Thanks for this, I love puzzles. Grin
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Put that in your pipe and grep it!
YuckTheFankees
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« Reply #2 on: December 01, 2011, 01:12:55 PM »
what are we looking for? A word or sentence?
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hurtl0cker
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« Reply #3 on: December 01, 2011, 01:28:32 PM »
One of my friend who deals with Algorithms and stuff cleared it, I am still scratching my head on it  Roll Eyes
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hayabusa
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« Reply #4 on: December 01, 2011, 03:28:07 PM »
I haven't looked closely, but a prelim glance at the source of the page would indicate 16 characters or less...
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~ hayabusa ~ 

"All men can see these tactics whereby I conquer, but what none can see is the strategy out of which victory is evolved." - Sun Tzu, 'The Art of War'

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3xban
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« Reply #5 on: December 02, 2011, 09:18:30 AM »
**SPOILER ALERT*** ha, Mubix tweeted the following link
http://www.canyoucrackit.co.uk/soyoudidit.asp
#CodeBreakingIsHard

:p
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lorddicranius
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« Reply #6 on: December 02, 2011, 10:22:51 AM »
Quote from: 3xban on December 02, 2011, 09:18:30 AM
**SPOILER ALERT*** ha, Mubix tweeted the following link
http://www.canyoucrackit.co.uk/soyoudidit.asp
#CodeBreakingIsHard

:p

lol Maybe get a job in their web security department to flush out logic flaws?
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GSEC, eCPPT, Sec+
millwalll
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« Reply #7 on: December 02, 2011, 11:41:13 AM »
lol epic fail Tongue
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lorddicranius
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« Reply #8 on: December 04, 2011, 10:19:01 PM »
**SPOILERS**

For those looking for the solution, there's videos here explaining it:

http://gchqchallenge.blogspot.com/2011/12/gchq-stage-1-commented-assembly-code-dr.html
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eth3real
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« Reply #9 on: December 05, 2011, 08:06:42 PM »
Wow, those are some incredible videos. Much more involved than I had initially thought.
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Put that in your pipe and grep it!
alan
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« Reply #10 on: December 07, 2011, 01:50:06 AM »
Are you sure this is the only answer? This article suggests there may be a hidden 4th challenge!

http://www.theregister.co.uk/2011/12/06/hidden_gchq_code_breaking_challenge/
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isgillen
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« Reply #11 on: December 14, 2011, 02:58:35 PM »
all that for £31k a year....shame
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millwalll
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« Reply #12 on: December 15, 2011, 04:26:43 AM »
did anyone from this site have a go and crack it ?
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lorddicranius
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« Reply #13 on: December 15, 2011, 11:06:46 AM »
Quote
Okay, so apparently there is a buffer overflow in the GCHQ canyoucrackit binary challenge. http://pastie.org/2999151 anyone else catch this? Smiley

Source: https://twitter.com/#!/d1n/status/145765165361676288

There's all kinds of security challenges in this! haha
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pharmerjoe
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« Reply #14 on: March 26, 2012, 11:00:43 AM »
You didn't even need to crack it, at the time, I just googled "site:canyoucrackit.co.uk"
And the soyoudidit page came up  Grin
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