Execution Style
Posted: Mon Jan 12, 2009 1:51 pm
I loved the part where you ended up with a hackvm program… And I instantly recognized it as such 
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Posted: Mon Jan 12, 2009 2:29 pm
Yeah, this was a really nice challenge! Loved to handle this different ways of simplification
Posted: Wed Feb 18, 2009 11:57 pm
Same here... 3 months ago I didn't even know about hackvm and today I got the result faster than I was able to find out the real meaning of the C99 syntax error.
And thanks for not taking this to the extremes like in "Compression"
And thanks for not taking this to the extremes like in "Compression"
Posted: Mon Mar 16, 2009 5:21 pm
Posted: Sun Dec 06, 2009 8:59 pm
I'm glad he didn't. ;p
I solved most of it by using http://codepad.org, seeing as I don't have a Perl interpreter with me. I couldn't figure out the C language so I just converted it to python.
Posted: Thu Mar 11, 2010 4:17 pm
I didnt know what to do with that error in C program compiling, so I rewrited it to Python.
Posted: Sat Aug 21, 2010 9:08 am
i love it, too
Posted: Sun Oct 17, 2010 5:04 am
How did you extract the data from the image?
For me, convert (from imagemagick) and the BSD »file« command made the challenge very easy…
For me, convert (from imagemagick) and the BSD »file« command made the challenge very easy…
Posted: Fri Feb 24, 2012 10:58 am
this was a very nice challenge, even though the "executable" confused me a lot ... till i found the 7z string in it 
. i used a small php script to extract the "executable" btw.:
. i used a small php script to extract the "executable" btw.:Code: Select all
#!/usr/bin/env php
<?php
$dat = file_get_contents(__DIR__ . '/Doll2.png');
if (preg_match('/IDAT(.*?)IEND/s', $dat, $match)) {
file_put_contents(__DIR__ . '/Doll2.bin', gzinflate(substr($match[1], 2, -4)));
}
Posted: Thu May 22, 2014 6:51 pm
I spent most time on the first step. I have written pixels & 0xff to the file and nothing appeared.
I am still confused why conversion to BMP gives other result (of course ordered from bottom to top).
On line compilers/interpretters helped a lot.
Funny one.
I am still confused why conversion to BMP gives other result (of course ordered from bottom to top).
On line compilers/interpretters helped a lot.
Funny one.
Great Challenge
Posted: Thu Apr 09, 2015 3:25 pm
I really loved this one. Didn't take that long, but was great fun.
Suppose I skipped the executable step, just extracted the 7z directly, without the executable wrapper. Was that intended or just luck? ^^
About the first step, yes, it was about recognizing that some binary data is encoded in the picture ... but it was kind of obvious.
Suppose I skipped the executable step, just extracted the 7z directly, without the executable wrapper. Was that intended or just luck? ^^
About the first step, yes, it was about recognizing that some binary data is encoded in the picture ... but it was kind of obvious.