viper.py - Hybrid HTTP DoS Tool

What is viper.py?

viper.py is a versatile and powerful HTTP Denial of Service (DoS) tool designed for stress testing web servers. It combines multithreading and coroutines to deliver high-performance attacks, targeting Layer 7 (Application Layer) vulnerabilities. It supports features like randomized headers, proxy integration, and dynamic request generation to mimic legitimate traffic, making it harder to detect.

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How Does viper.py Work?

1. Multiple Threads and Coroutines:
   • Threads manage coroutine loops for sending a high volume of asynchronous HTTP requests.
2. Randomized Request Parameters:
   • User-Agent, Referer, and query strings are randomized to simulate legitimate traffic.
3. Proxy Support:
   • Allows testing with multiple SOCKS5 proxies to mask source IPs.
4. Dynamic Adjustments:
   • Monitors server responses and adjusts request rates or concurrency dynamically.
5. Exhausts Server Resources:
   • Overwhelms the web server by consuming CPU, memory, and thread pools, leading to denial of service.

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How to Install and Run viper.py

Installation

Clone the repository from GitHub:

git clone https://github.com/your-repo/viper.git
cd viper

Ensure you have Python 3 installed. Install the required dependencies using:

pip3 install -r requirements.txt

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Running viper.py

To run a basic attack:

python3 viper.py --url example.com --threads 10 --coroutines 50 --requests 20

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SOCKS5 Proxy Support

If you plan on using SOCKS5 proxies, ensure you have the PySocks library installed:

pip3 install PySocks

You can then use the --proxy-file option to specify a file containing proxy addresses:

python3 viper.py --url example.com --threads 10 --coroutines 50 --requests 20 --proxy-file proxies.txt

The proxy file should contain one proxy address per line, in the format:

127.0.0.1:8080
192.168.1.100:1080

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Configuration Options

viper.py provides various command-line arguments to customize the attack:

Argument	Description	Default
--url	Target URL for the attack	Required
--threads	Number of threads to spawn	10
--coroutines	Number of coroutines per thread	50
--requests	Number of requests per coroutine	20
--proxy-file	File containing proxy addresses	None
--useragents	File with custom User-Agent strings	Randomized built-in
--sleeptime	Time to sleep between requests (seconds)	0.1-0.5 (random)
--verbose	Increases logging output	Off

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Example Commands

Basic Usage

Run the tool against a target URL:

python3 viper.py --url example.com --threads 15 --coroutines 100 --requests 25

Using Proxies

Run with SOCKS5 proxies from a file:

python3 viper.py --url example.com --threads 10 --coroutines 50 --requests 20 --proxy-file proxies.txt

Verbose Mode

Enable detailed logging:

python3 viper.py --url example.com --threads 10 --verbose

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Disclaimer

⚠️ Caution: This tool is intended for testing your own servers or those you have explicit permission to test. Unauthorized use against third-party systems is illegal and unethical. Always ensure you have proper authorization before conducting any stress tests.