1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

PHP Captcha Bypass?

Discussion in 'Black Hat SEO' started by HardLettuce, Dec 19, 2009.

  1. HardLettuce

    HardLettuce Newbie

    Joined:
    Dec 16, 2009
    Messages:
    11
    Likes Received:
    3
    I am working on a project and I am in a need of a PHP captcha bypasser, if there is such a thing.

    I know PHP has various image functions, but I don't know where to begin.

    Of course, it would be much easier to send a get/post request to an external source such as a website and provide the dynamic image URL to solve it but I don't want to depend on services such as captchakiller. Besides, I don't want to pay for that service either.

    If anyone knows any captcha-solving websites or perhaps some PHP functions that could "compare" images, deformed images, including tolerance, etc.

    Any suggestions would be appreciated.

    HardLettuce
     
  2. tomksoft

    tomksoft Registered Member

    Joined:
    Oct 24, 2008
    Messages:
    71
    Likes Received:
    40
    Home Page:
    Sorry, but there is no DecodeCaptcha function in PHP so far :)
    If it's a really easy captcha, you can just do it pixel-by-pixel using GD lib. You can also take a look at PHP OCR Class (somewhere on phpclasses.org).

    If it's google captcha or recaptcha(however this one can be broken with success rate of about 15%), decaptcher would be best solution.
     
    • Thanks Thanks x 1
  3. TheGoat

    TheGoat Registered Member

    Joined:
    Oct 1, 2009
    Messages:
    70
    Likes Received:
    85
    I've had mediocre success while experimenting with imagemagik + gocr (on lesser captchas that is...) Google and recaptcha? fgetaboutit...
     
    • Thanks Thanks x 1
  4. HardLettuce

    HardLettuce Newbie

    Joined:
    Dec 16, 2009
    Messages:
    11
    Likes Received:
    3
    Thanks a lot for your input.
     
  5. trophaeum

    trophaeum Senior Member

    Joined:
    Dec 21, 2007
    Messages:
    1,189
    Likes Received:
    706
    if you dont already know where to start, dont attempt this, imagick+gocr with php however will get you a really good success rate once you know what you are doing and your not looking for bypass your looking for breaker
     
  6. HardLettuce

    HardLettuce Newbie

    Joined:
    Dec 16, 2009
    Messages:
    11
    Likes Received:
    3
    Acutally, I'm working on a pascal version and I'm pretty sure I'll get the easy ones working with no problem.
     
  7. geeksfa

    geeksfa Newbie

    Joined:
    Dec 20, 2009
    Messages:
    4
    Likes Received:
    1
    look on odesk my friend is expert php programmer he might be abe to hep you look up jacob pune that is his name on odesk
     
  8. nikon70

    nikon70 Newbie

    Joined:
    Oct 4, 2009
    Messages:
    2
    Likes Received:
    0
    better off using human captcha service, $7 1000 images they have very simple api, i just implemented two such services in my own app
     
  9. Snurry

    Snurry Newbie

    Joined:
    Oct 2, 2009
    Messages:
    41
    Likes Received:
    6
    decaptcher does 1000 for $2 so it can get even cheaper. unless you want to invest time and money into your own captcha breaker, I'd go with someone else's for a small fee.
     
  10. aReJay

    aReJay Power Member

    Joined:
    Apr 29, 2009
    Messages:
    736
    Likes Received:
    237
    Location:
    Down under
    Where would we find the re-capcha code
     
  11. trophaeum

    trophaeum Senior Member

    Joined:
    Dec 21, 2007
    Messages:
    1,189
    Likes Received:
    706
    have about 5k ready to pay someone for it