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capactha breaker

Discussion in 'Black Hat SEO Tools' started by mer544, Jun 5, 2009.

  1. mer544

    mer544 Newbie

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    i have been testing the free open source ocr script tesseract OCR and it seems to crack weaker capactha quite easly

    when you have capacthas with a clear background, like some weak ones on various forums it seems to return the correct capctha in 1/4 attemps

    even the capcthas from recapactha used on this forum can be broken with the same 1/4, 1/5 success rate using this script

    i have made a nice little script in php curl that makes 5 posts in one go to couple of forums i have found with weak capthcas, and it seems to be posting really well

    i have set my script to post on cron, i run it every minute to make 5 posts, moving threw a list of forums (2000) after 50x5 posts to each

    so i get 10-20 posts sticking

    thats like 5 posts per minute times 60 per hour times 24 per day, i simply set up the script to run via cron via the lynx unix web browser

    some i'm making 6800 posts a day with about 20% susscess rate

    i'm not going to tell you the forums system i am posting to because i don't want it foolded with other poeples spam

    but if you look threw odp for free forums or message boards theres alot of sites that offer free forums and message boards that can be taken advantage of in this manner



    if anyone nos any other sites / forums or services that have weaker capthcas, ie clearer text on a solid background please let us no about it


    i have been trying a older veriosn of xrummer, but that seemed to suck, if you post using that its more than likely your posting in the same places other spamers are and therefore you have no chance of getting traffic or sales from your efforts

    making up a custom spam bot is by far the best option, you can then target places, sites etc others are not, then if your selling a product or service of some merit you will make some sales
     
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  2. domainplayer

    domainplayer Junior Member

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    Occupation:
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    You have been using this?:

    hxxp://code.google.com/p/tesseract-ocr/
     
  3. mer544

    mer544 Newbie

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    yes

    i have installed it on my server, it is meant to be one of the best ocr scripts around(cgi/perl based), i then in my php/curl script which i have grabbed the capthca form the site i'm posting to, run it threw the tesseract script to produce a ouput of the capchtca in text format

    this is not a perfect method, but its fully automated and of course you need your own server to host the various programes on

    theres also a online webased version thats hosted by some univertsity in japan that you can feed your saved capthca's threw, but if your making thousands of requested a day threw anyone elses site, there not going to like it at all
     
  4. bongli

    bongli Registered Member

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    What's the success rate of this ocr script against gmail captcha? I heard from one of my programmer friend that its 10% but I'm not sure which script he is using.

    Do you think its possible for to train this script to break gmail captcha 100%?

    100% Captcha Breaking is my dream.
     
  5. cooooookies

    cooooookies Senior Member

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    I ignored tesseract in the past and used gocr, but will definitely now test it. Did you compare the results with gocr? The annoying from the latter is that you have to intensively train it, is this necesarry for t?

     
  6. proscale

    proscale Regular Member

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    you might wanna try imagemagick and preprocess complex images, its fairly simple and can make even complex captchas with simple background and bw images.

    YOu will have lot more forums you can post on
     
  7. xerobytez

    xerobytez Newbie

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    ive been working with tesseract for most of the night, im trying to figure out how to train it. im targeting recaptcha right now with about a 10% success rate, i'm thinking if i can properly train it then i could significantly increase the success rate. if anyone can help, let me know.
     
  8. myvideoke

    myvideoke Newbie

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    This is good, I'm sure I can download a .net library for this and test it?
     
  9. roshaanaziz

    roshaanaziz BANNED BANNED

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    If you need captcha team let me know
     
  10. heiska

    heiska Junior Member

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    The great thing with recaptcha is that you only have to know one of the two words. The bad thing is that you don't know which of the two.