Category
GCHQ
3 posts.
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CanYouCrackIt.co.uk / GCHQ Challenge Solution – Stage 3
The final stage of the GCHQ challenge was a small (5kB) x86 Windows/cygwin binary (available here). Analyzing it in IDA Pro, I could see that it expects a 24 byte license file with the following format:
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CanYouCrackIt.co.uk / GCHQ Challenge Solution – Stage 2
After cracking stage 1 of the GCHQ challenge, we get the URL to the Javascript code available here.
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CanYouCrackIt.co.uk / GCHQ Challenge Solution - Stage 1
I heard about “the code” at www.canyoucrackit.co.uk during the first friday of december (2011-12-02), and cracked the final stage on sunday two days later. The reason for not cracking it all during friday evening was, unfortunately, not because it presented…
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