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# Captcha Bypass
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To **automate** the **testing** of some functions of the server that allows user input it **could** be **needed** to **bypass** a **captcha** implementation. Test these things:
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To **automate** the **testing** of some functions of the server that allows user input it **could** be **needed** to **bypass** a **captcha** implementation. Therefore, try to test for these things:
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* **Do not send the parameter** related to the captcha.
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* Change from POST to GET or other HTTP Verbs
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* Try to use an **old captcha value**
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* Check if you can use the **same** captcha **value** several times with **the same or different sessionID.**
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* If the captcha consists on a **mathematical operation** try to **automate** the **calculation.**
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* If the captcha consists on **read characters from an image**, check manually or with code **how many images** are being used and if only a **few images are being used, detect them by MD5.**
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* If the captcha consists of **read characters from an image**, check manually or with code **how many images** are being used and if only a **few images are being used, detect them by MD5.**
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* Use an **OCR** ([https://github.com/tesseract-ocr/tesseract](https://github.com/tesseract-ocr/tesseract)).
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