AWS WAF (Web Application Firewall) is a security service provided by Amazon Web Services (AWS) that helps protect web applications from common web vulnerabilities and attacks. It acts as a barrier between web clients and application servers, filtering and monitoring incoming traffic based on predefined rules.AWS WAF sometimes challenges users with CAPTCHA to ensure that traffic is coming from legitimate human users. In this article, we will explore what AWS WAF is, the conditions for bypassing AWS WAF, and provide a suggested solution, complete with steps.

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AWS WAF is a managed firewall service that allows users to define customisable rules to control access to their web applications. It helps protect against common web vulnerabilities such as SQL injection, cross-site scripting (XSS), and distributed denial of service (DDoS) attacks. By analysing incoming web requests, AWS WAF can detect and block malicious traffic, ensuring the security and availability of AWS-hosted web applications. In short, AWS WAF is a web application firewall that helps protect web applications.

Bypassing AWS WAF CAPTCHA requires understanding and addressing specific conditions that may trigger its activation. These conditions may include: a. Suspicious Traffic Patterns.

a. Suspicious Traffic Patterns: AWS WAF may activate a CAPTCHA challenge if it detects unusual or suspicious traffic patterns, such as a large number of requests from a single IP address or a sudden spike in traffic.

b. Abusive Behavior: Engaging in abusive behavior, such as too fast or repeated requests, may trigger AWS WAF to activate a CAPTCHA challenge to prevent automated scraping or bot-based attacks.

c. Anomalous User Agent Strings: AWS WAF may flag anomalous or suspicious user agent strings in the HTTP header, which may result in the activation of a CAPTCHA challenge.

To bypass AWS WAF Captcha, here is a recommended approach:

a. Rotate IP Addresses: AWS WAF may track and block suspicious IP addresses associated with scraping or abusive activities. By rotating your IP address using proxy servers or VPN services, you can avoid being flagged or blocked by AWS WAF, enhancing your chances of bypassing Captcha challenges.

b. Emulate Human Behavior: To further mimic human behavior, introduce random delays between your requests and vary the timing and order of actions performed during scraping or automation. This helps make your activities appear more natural and reduces the likelihood of triggering Captcha challenges.

c. Using CAPTCHA solver: a more efficient and faster way is to use a captcha solver, such as the market superior solution, Capsolver, currently supports the solution of a variety of Captcha, including aws waf, both api and extension in the speed and accuracy are guaranteed, Capsolver can be integrated into your scraping or automated work process.

The following steps can be found on how to bypass the target captcha and complete the captcha solving

Create a recognition task with the createTask method.

POST https://api.capsolver.com/createTask
Host: api.capsolver.com
Content-Type: application/json

{
    "clientKey": "YOUR_API_KEY",
    "task": {
        "type": "AntiAwsWafTask", //Required
        "websiteURL": "https://efw47fpad9.execute-api.us-east-1.amazonaws.com/latest", //Required
        "awsKey": "",
        "awsIv": "",
        "awsContext": "",
        "awsChallengeJS": "",
        "proxy": "http:ip:port:user:pass" // socks5:ip:port:user:pass // Optional
    }
}

After you submit the task to us, you should receive in the response a 'Task id' if it's successfull. Please read errorCode: full list of errors if you didn't receive the task id. For more information, you can also refer to this blog post How to solve aws amazon captcha token

{
    "errorId": 0,
    "errorCode": "",
    "errorDescription": "",
    "taskId": "61138bb6-19fb-11ec-a9c8-0242ac110006"
}

After you have the taskId, you need to submit the taskId to retrieve the solution. Response structure is explained in getTaskResult.

Depending on the system load, you will get the results within the interval of 5s to 30s

POST https://api.capsolver.com/getTaskResult
Host: api.capsolver.com
Content-Type: application/json

{
    "clientKey": "YOUR_API_KEY",
    "taskId": "61138bb6-19fb-11ec-a9c8-0242ac110006"
}

{
  "errorId": 0,
  "taskId": "646825ef-9547-4a29-9a05-50a6265f9d8a",
  "status": "ready",
  "solution": {
    "cookie": "223d1f60-0e9f-4238-ac0a-e766b15a778e:EQoAf0APpGIKAAAA:AJam3OWpff1VgKIJxH4lGMMHxPVQ0q0R3CNtgcMbR4VvnIBSpgt1Otbax4kuqrgkEp0nFKanO5oPtwt9+Butf7lt0JNe4rZQwZ5IrEnkXvyeZQPaCFshHOISAFLTX7AWHldEXFlZEg7DjIc="
  }
}

Documentation: https://docs.capsolver.com/guide/extension/introductions.html

This article focuses on The most efficient way to bypass AWS WAF with a captcha solution at the moment, and as mentioned, Capsolver is one of the best, an all-in-one solution for bypassing CAPTCHA and other captchas. Don't hesitate to try Capsolver for free!