CAPTCHA Hacked – While I was testing CAPTCHA, I could break the CAPTCHA and automated the correct inputs for CAPTCHA. Purpose of CAPTCHA was broken. This is how it was done – I found out that the CAPTCHA images are in sequence like 1.JPG, 2.JPG, 3.JPG… 300.JPG. Once it was found, all the CAPTCHA images were downloaded to the local machine and in excel sheet the mapping was done manually for 300 images. As it was not around 1lac images it was cakewalk to get text equivalent of CAPTCHA in 30 minutes for 300 images. Then excel sheet was used where in one column CAPTCHA image link was added and in second column there was text equivalent. Once it was done it was pretty easy to use functional automation tools like Selenium or Sahi and put assertions like. When image=1.JPG Goto excelsheet and fetch text equivalent of 1.JPG from the second column Then input it in the CAPTCHA text field Submit
Posted on: Tue, 03 Dec 2013 11:44:04 +0000
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