qosanw.blogg.se - Recaptcha bypass using pypeteer

Although this is quite old, there is still a lot of useful information on the page.

InsideReCaptcha: This is a project from 2014 which tries to "reverse-engineer" reCAPTCHA.

Official docs from Google: Obviously, they just explain the basics and not how it works "in the back".

There is not much public information from Google how exactly reCAPTCHA works as this is a cat-and-mouse game between bot creators and Google detection algorithms, but there are some resources online with more information:

Put that value into the first browser: document.querySelector('#g-recaptcha-response').value = '.'.

Read the value from: document.querySelector('#g-recaptcha-response').value.

Open a second browser in non-headless mode with the same URL.

Detect if the page uses reCAPTCHA (e.g.

It will look like this: Īfter you solved the challenge, reCAPTCHA will add a very long string to this text field (which can then later be checked by the server/reCAPTCHA service in the backend) when the form is submitted.īy copying the value of the textarea field you can transfer the "solved challenge" from one browser to another (this is also what the solving services to for you). When the reCAPTCHA code is loaded it will add a response textarea to the form with no value. Option 3: Solve the captcha yourselfįor this, let me explain how reCAPTCHA works and what happens when you visit a page using it.Įach page has an ID, which you can check by looking at the source code, example: Abu Taher for more information on the topic or search for captcha solver. I will not link to any particular site, but you can check out the other answer from Md. There is an entire industry which has people (often in developing countries) filling out captchas for other people's bots. Option 2: Automate/Outsource the captcha solving

Maybe there is a documented API that you can use. Your options are the following: Option 1: Stop crawling or try to use an official APIĪs the owner of the page does not want you to crawl that page, you could simply respect that decision and stop crawling. This is a reCAPTCHA (version 2, check out demos here), which is shown to you as the owner of the page does not want you to automatically crawl the page.