hacktricks/pentesting-web/captcha-bypass.md
2024-02-10 17:52:19 +00:00

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# Captcha Bypass
<details>
<summary><strong>htARTE (HackTricks AWS Red Team Expert)</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>qa'vIn AWS hacking jatlh</strong></a><strong>!</strong></summary>
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* **HackTricks vItlhutlh** pe'vIl **company advertised** 'ej **HackTricks PDF download** [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop) **qaStaHvIS**.
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* [**The PEASS Family**](https://opensea.io/collection/the-peass-family) **ghItlh**, [**NFTs**](https://opensea.io/collection/the-peass-family) **ghItlh**.
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) **telegram group** [**tIq**](https://t.me/peass) **Twitter** 🐦 [**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
* **Share your hacking tricks** [**HackTricks**](https://github.com/carlospolop/hacktricks) [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) **github repos** **submitting PRs**.
</details>
## Captcha Bypass
**Server testing** 'ej **automate user input functions** **captcha** **bypass** **techniques** various **employed**. **Security undermine** 'ach **testing process streamline**. **Comprehensive list** strategies:
1. **Parameter Manipulation**:
* **Captcha Parameter Omit**: Captcha parameter **sending** **Avoid**. **HTTP method** POST **GET** **verbs**, **data format** altering, **form data** JSON **switching** such as **experiment**.
* **Empty Captcha Send**: Captcha parameter **present** **request** **Submit** **empty** **left**.
2. **Value Extraction and Reuse**:
* **Source Code Inspection**: Captcha value **page's source code** **Search**.
* **Cookie Analysis**: Captcha value **stored** **cookies** **Examine** **reused**.
* **Old Captcha Values Reuse**: Captcha values **successful** **previously** **use** **Attempt**.
* **Session Manipulation**: Captcha value **sessions** **different** **across** **use** **Try** **session ID**.
3. **Automation and Recognition**:
* **Mathematical Captchas**: Captcha **math operations** **involves**, **calculation process** **automate**.
* **Image Recognition**:
* **Image** **characters reading** **require** captchas, **manually** **programmatically** **determine** **unique images** **number** **total**. **Set** **limited**, **MD5 hash** **image** **identify** **might**.
* **Optical Character Recognition (OCR)** [Tesseract OCR](https://github.com/tesseract-ocr/tesseract) **tools** **Utilize** **automate** **reading** **character** **images**.
4. **Additional Techniques**:
* **Rate Limit Testing**: Application **attempts** **number** **limits** **check** **given timeframe** **submissions** **limit** **bypassed** **reset**.
* **Third-party Services**: Captcha-solving services **employ** **APIs** **offer** **recognition** **captcha** **automated**.
* **Session and IP Rotation**: Server **blocking** **detection** **avoid** **addresses** **IP** **IDs** **session** **change** **Frequently**.
* **User-Agent and Header Manipulation**: **Request headers** **browsers** **devices** **different** **mimic** **Alter** **User-Agent**.
* **Audio Captcha Analysis**: Audio captcha option **available**, **interpret** **solve** **captcha** **speech-to-text services** **use**.
## Online Services to bypass captchas
### [Capsolver](https://www.capsolver.com/)
Capsolver **automatic captcha solver** **affordable** **quick captcha-solving solution** **offers**. **Program** **combine** **rapidly** **integration option** **using** **achieve** **results** **best** **matter of seconds**.
Capsolver **success rate** 99.15% **captchas** **10M** **answer** **minute** **more**. **automation** **scrape** **uptime** 99.99% **have**. **large budget** **captcha package** **buy** **may**.
**Market** **price** **lowest** **receive** **variety** **solutions**, **reCAPTCHA V2**, **reCAPTCHA V3**, **hCaptcha**, **hCaptcha Click**, **reCaptcha click**, **Funcaptcha Click**, **FunCaptcha**, **datadome captcha**, **aws captcha**, **picture-to-text**, **binance / coinmarketcap captcha**, **geetest v3 / v3**, **more**. **service** **With**, **slowest speed** **0.1s** **measured**.
<details>
<summary><strong>htARTE (HackTricks AWS Red Team Expert)</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>qa'vIn AWS hacking jatlh</strong></a><strong>!</strong></summary>
HackTricks vItlhutlh:
* **HackTricks vItlhutlh** pe'vIl **company advertised** 'ej **HackTricks PDF download** [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop) **qaStaHvIS**.
* [**official PEASS & HackTricks swag**](https://peass.creator-spring.com) **ghItlh**.
* [**The PEASS Family**](https://opensea.io/collection/the-peass-family) **ghItlh**, [**NFTs**](https://opensea.io/collection/the-peass-family) **ghItlh**.
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) **telegram group** [**tIq**](https://t.me/peass) **Twitter** 🐦 [**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
* **Share your hacking tricks** [**HackTricks**](https://github.com/carlospolop/hacktricks) [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) **github repos** **submitting PRs**.
</details>