Recognize ReCaptcha
- Stanislav N. (Unlicensed)
- ZL Support
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Table of contents
Description
Allows you to be verified on sites with installed protection against bots. The method is only suitable for captchas: reCAPTCHA v2, reCAPTCHA v2 Invisible and reCAPTCHA v3 .
How to add an action to a project?
Via context menu Add Action → Tabs → Recognize ReCaptcha
Or use smart search .
What is it used for?
Passing registrations
Parsing sites and search engines
Performing bulk actions
How to work with an action?
Main settings
Selecting a module for captcha recognition. Select the desired captcha recognition service from the drop-down list (you must first specify its API key in the settings ).
Installing CapMonster.Cloud as the default service
Registration of an account in CapMonster.Cloud. All ZennoPoster license holders receive $ 5 free of charge on the balance of the service for solving captchas.
Recognizing reCaptcha v2 in tab
Recognition takes place directly in the browser window.
Recognition method
Select the appropriate function (Recognition reCaptcha v2) and the recognition method (In tab)
Use proxy from project
The current proxy of the project will be sent to the recognition service along with the captcha.
Use project cookies
The current project cookies will be sent to the recognition service along with the captcha.
Tab:
a) Active - the tab that you have in front of your eyes at the moment.
b) First - is the first window on the left.
c) By name - indicate the name of the tab or variable considering the case of letters.
d) By number - set the tab number. The numbering goes from left to right starting from 0. If you need to close the very first tab, then specify zero in the field, the subsequent tabs are 1, 2, 3….
Enable autosubmit
If the page does not have a button for submitting a form with a recognized recaptcha, you need to enable this option to perform an autosubmit.
Save task ID to variable
Variable for the task ID.
ReCaptcha v2 recognition via sitekey
The process takes place without loading the browser.
Recognition method
Select the appropriate function (Recognition reCaptcha v2) and the recognition method (Via SiteKey)
Use proxy from project
The current proxy of the project will be sent to the recognition service along with the captcha.
Use project cookies
The current project cookies will be sent to the recognition service along with the captcha.
SiteKey
Recaptcha site key.
Sitekey parameter is individual for each site
URL
Full URL of the page on which Recaptcha is recognized.
data-s
Not necessary
An additional parameter that is not found on all sites, so its transmission is optional.
At least this parameter is found in Google search and on its services.
Save task ID to variable
Variable for the job ID.
Put to variable
The response from the recognition service will be saved to the variable specified here - the token of the resolved Recaptcha.
Token sending examples
After receiving the token, you must substitute it in the appropriate field.
Below we will see how to call the field in the browser.
Call the Element Tree through the context menu and find the ( textarea ) field for entering inside the captcha
Call the context menu with the right mouse button and click In the action designer
Selecting the style attribute
Set the value to display: block
Using the Test button, you can check whether the function will work in the browser or not. Next, add the action to the project.
Under the captcha itself, a field will appear where you need to enter the token. This can be done with the action Setting the value .
After successfully recognition the captcha, the response containing the token will be placed in the variable to be sent to the server. It must be substituted into the request, most often it is the g-recaptcha-response argument.
An example of a website request can always be viewed in the traffic window
Recognizing reCaptcha v3 in a tab
Recognition takes place directly in the browser window.
Recognition method
Select the appropriate function (Recognition reCaptcha v3) and the recognition method (In tab)
Use proxy from project
The current proxy of the project will be sent to the recognition service along with the captcha.
Use project cookies
The current project cookies will be sent to the recognition service along with the captcha.
Tab:
a) Active - the tab that you have in front of your eyes at the moment.
b) First is the first window on the left.
c) By name - indicate the name of the tab or variable considering the case of letters.
d) By number - set the tab number. The numbering goes from left to right starting from 0.
Action
The parameter that must be found in the source code of the site.
It is located in the page code in the grecaptcha.execute function call
Individual for each site!
Min score
User rating at which the check will be considered successful, range from 0.1 to 0.9.
Most often, a value of 0.3 is sufficient, but for each site it is necessary to check it individually.
Save task ID to variable
Variable for the job ID.
Put to variable
The response from the recognition service will be saved to the variable specified here - the token of the resolved Recaptcha.
ReCaptcha v3 recognition via sitekey
The process of recognition occurs without loading the browser.
Recognition method
Select the appropriate function (Recognition reCaptcha v2) and the recognition method (Via SiteKey)
Use proxy from project
The current proxy of the project will be sent to the recognition service along with the captcha.
Use project cookies
The current project cookies will be sent to the recognition service along with the captcha.
SiteKey
Recaptcha site key.
Sitekey parameter is individual for each site
In the source code of the DOM page
In traffic window on page load
Click on the request and go to the Parameters tab
The parameter can be named k or key
URL
Full URL of the page on which Recaptcha is recognized.
data-s
Not necessary
An additional parameter that is not found on all sites, so its transmission is optional.
At least this parameter is found in Google search and on its services.
Action
The parameter that must be found in the source code of the site.
It is located in the page code in the grecaptcha.execute function call
Individual for each site!
Min score
User rating at which the check will be considered successful, range from 0.1 to 0.9.
Most often, a value of 0.3 is sufficient, but for each site it is necessary to check it individually.
Save task ID to variable
Variable for the job ID.
Put to variable
The response from the recognition service will be saved to the variable specified here - the token of the resolved Recaptcha.
A note on reCaptcha v3
When loading a page in the traffic window, it is very important to pay attention to the request
If the request occurs when the page is loaded, then we select the recognition of reCaptcha v3 via sitekey.
When the request is made after submitting the form to the site, then reCaptcha v3 recognition in the tab.
Parameters: SiteKey, Action, Score, Url can be set through variables.
Token spoofing occurs before the request is sent
An example of sending a reCaptcha v3 token when solving in a tab
The token is sent in the browser by substituting it. The tab method is only suitable when the request to Google will occur after the form has been submitted
Consider the example of a site https://lessons.zennolab.com/captchas/recaptcha/v3.php?level=beta
During the loading of the site, there was no request for the captcha, which means that the method of recognition in the tab suits us.
Setting up a cube for solving ReCaptcha v3
We receive the token. Next, using the C# snippet, we send it to the site:
var sitekey = project.Variables["sitekey"].Value;
var newToken = project.Variables["token"].Value;
var replaceRegex = @"(?<=\[""rresp"","")[^""]+";
instance.ChangeResponse("https://www.google.com/recaptcha/api2/reload\\?k="+sitekey,
new List<string> {replaceRegex}, new List<string> {newToken}, false);
The use of SiteKey in the snippet is optional. But keep in mind that without using SiteKey, requests from all captchas, including ReCaptcha2, will be intercepted.
If this is not a problem, you can use this version of the snippet:
var newToken = project.Variables["token"].Value;
var replaceRegex = @"(?<=\[""rresp"","")[^""]+";
instance.ChangeResponse("https://www.google.com/recaptcha/api2/reload\\?k=",
new List<string> {replaceRegex}, new List<string> {newToken}, false);We send the form on the site.
In the traffic window, you can make sure that the substitution of the token for the required one has occurred
An example of sending a reCaptcha v3 token when recognition via SiteKey
If in the traffic window we see that the request is being executed along with the loading of the site page, then the procedure differs from recognition in the Tab
First, we set up the cube for solving the captcha and get the token
We receive the token. Next, using the C# snippet, we send it to the site:
var sitekey = project.Variables["sitekey"].Value;
var newToken = project.Variables["token"].Value;
var replaceRegex = @"(?<=\[""rresp"","")[^""]+";
instance.ChangeResponse("https://www.google.com/recaptcha/api2/reload\\?k="+sitekey,
new List<string> {replaceRegex}, new List<string> {newToken}, false);
The use of SiteKey in the snippet is optional. But keep in mind that without using SiteKey, requests from all captchas, including ReCaptcha2, will be intercepted.
If this is not a problem, you can use this version of the snippet:
var newToken = project.Variables["token"].Value;
var replaceRegex = @"(?<=\[""rresp"","")[^""]+";
instance.ChangeResponse("https://www.google.com/recaptcha/api2/reload\\?k=",
new List<string> {replaceRegex}, new List<string> {newToken}, false);Only after that we load the page with ReCaptcha v3 and perform the necessary actions
Bug report
Allows you to return funds in case of an unsuccessful attempt to recognition the captcha.
Task ID specified by a static value or a variable.
Success report
We inform the service about the successful solving of the captcha.
Task ID specified by a static value or a variable.
Usage example
When you enter the antibot page, the system asks you to confirm that you are not a robot.
You go to the page.
Add an action to recognize reCaptcha to the project.
Setting up the cube.
You pass the site check.
Today, many resources are protected by Google. It helps sites to suppress mass actions or identify bots, but thanks to the Zennoposter functionality, it will not be difficult to pass such checks.
Useful links