PHPBB3 Code
Windows is a total pain. I spent ages trying to get this phpbb3 code to compile on it. The code is messy as anything. It was written pretty fast just to do the job. I might release piratebay if people are interested which has a lot cleaner code in it. I actually used separate modules 
.
The code just runs through the entire phpbb3 captcha and fills in areas until it finds a small area. It assumes that any small area must be part of the letter. It then blurs all the little squares together, spaces the letters out better, rotates them and dumps a file that can be read by gocr.
The windows executable barely compiled. Hopefully it works, but since I don’t use windows. I have no idea really .
Here it is. PhpBB3 Crack tool
July 21st, 2008 at 2:15 pm
[20:17] wysiwtf@debian ~/temp/phpbb3crack ./compile.sh
crackbb3.cc: In function ‘int main(int, char**)’:
crackbb3.cc:689: error: ‘class Magick::Image’ has no member named ‘extent’
Any idea?
July 21st, 2008 at 2:51 pm
Looks like an old imagemagick package. You might have to install from the source from the imagemagick website. Make sure you remove all previously installed imagemagick packages.
Then pray.
July 21st, 2008 at 2:52 pm
Incidentally… debian?!?! Get rid of that thing.
July 21st, 2008 at 2:56 pm
Why?
Anyway, thanks - great piece of code 
July 22nd, 2008 at 5:21 am
What distro you using then Harry?
July 22nd, 2008 at 5:30 am
Zenwalk Linux. A slackware derivative. Slackware is a brilliant distro but they have a habit of stuff not quite working as you’d expect. Slackware is almost bullet-proof though. Zenwalk takes that bullet-proof design and makes stuff work as well.
July 22nd, 2008 at 1:49 pm
Thanks for sharing.I never new about this code till now:)
August 16th, 2008 at 3:19 am
Thanks for the post. It helped me understand a lot of the intricacies.
August 30th, 2008 at 8:32 am
I really enjoy reading your blog especially this post in particle
September 5th, 2008 at 7:52 am
Hmm, not bad i also used gocr, but i have little problems witd pnm-s.
Anyway my clean-up script is writen in PHP(GD) but that’s not problem .. the problem is that gocr doesn’t read letters correctly. Here …
http://shrani.si/f/3Q/WJ/3s7Vmgr8/555i.png
ok, there are some circles but i’ll remove that too. But if i remove that manualy and put it in gocr with pnm-s from zip in that post. Gocr regonize ONLY mybee 2 or 3 chars not more .. is that normal?
September 7th, 2008 at 10:44 am
Hmm, I looked one more time all files in that zip. And ofcorse crackbb3.cc. And i would like to ask you, how can i rotate images ? How to calculate engle ?
September 8th, 2008 at 9:20 am
Ok I gived up, and I don’t think anymore how to rotate images. Insted of this I looked phpbb3 captcha generator, now if you play with this:
$this->basis_matrix[0][0] = -2;
$this->basis_matrix[0][1] = 1;
$this->basis_matrix[0][2] = 1;
$this->basis_matrix[1][0] = 1;
$this->basis_matrix[1][1] = 1;
$this->basis_matrix[1][2] = 1;
actuatly if you change $this->basis_matrix[0][0] to 10,5,2,-2,-5,-10 you can rotate letters as you want to all engles …
You can also generate one by one letters. Then you clean up images, and save letter. The last thing you need to do is to convert results to pnms and we have full database for phpBB3
.
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October 10th, 2008 at 12:26 pm
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December 2nd, 2008 at 11:16 am
Zenwalk Linux. A slackware derivative. Slackware is a brilliant distro but they have a habit of stuff not quite working as you’d expect. Slackware is almost bullet-proof though. Zenwalk takes that bullet-proof design and makes stuff work as well.