"OpenBullet 2" is a security testing tool used for web automation, penetration testing, and credential stuffing (note: it is often misused for malicious purposes). Here are its main features:
Key Features of OpenBullet 2:
Multi-threaded engine – High-speed request processing with configurable thread limits.
Proxy support – HTTP, HTTPS, SOCKS4/5 proxies with rotation and banning of dead proxies.
Config system – Uses LoliScript (a custom scripting language) to define attack/request workflows.
Captcha solving – Integrates with services like 2Captcha, Anti-Captcha, and CapMonster.
Target management – Import/export proxies, wordlists, and combo lists (email:pass).
Hit logging – Automatically saves valid results (e.g., successful logins) with custom data extraction.
Custom parsers – Regex, JSON, and HTML parsing to extract tokens, CSRF, or other data.
Proxy scanner – Built-in tool to test and validate proxy quality. openbullet 2
Plugin system – Extend functionality with C# plugins.
REST API – Allows remote control and integration with other tools.
Database backend – Uses LiteDB or SQLite for storing configs, hits, and settings.
Dark theme UI – Modern, responsive interface (successor to the older OpenBullet 1.x).
Typical legitimate use cases:
Warning: Unauthorized use against websites you don't own is illegal in most jurisdictions (violates CFAA, Computer Misuse Act, etc.).
OpenBullet 2 is a cross-platform, high-performance automation suite primarily used for web scraping, data parsing, and automated penetration testing Key Features Cross-Platform Compatibility
: Unlike the original version, OpenBullet 2 is built on .NET, allowing it to run on Windows, Linux, and macOS. Versatile Request Handling
: It excels at performing automated requests against web applications and offers a wide range of tools to process the results. Robust Tooling : The suite includes support for multithreading proxy management CAPTCHA solving , and extensive logging. Highly Customizable "OpenBullet 2" is a security testing tool used
: Users can manage bot configurations, maintain lists of credentials, and extend functionality through a dedicated plugin system. User Perspective & Ease of Use Learning Curve
: Some users find the transition from OpenBullet 1 difficult, citing that configuration creation is more complex in the new version. Feature Value
: Despite the complexity, advanced users argue the new features make the upgrade worthwhile, provided you take the time to learn the documentation. Active Development : The project is actively maintained on
, with a large community and frequent updates to resolve bugs and add features. Ethics and Legality Legal Caution
: Using this software for (D)DoS attacks or credential stuffing on unauthorized targets is Common Use Cases
: While it is a legitimate tool for cybersecurity professionals and software testers, it is also frequently used by threat actors for large-scale automated attacks. Summary Table OpenBullet 2 Windows, Linux, macOS (Cross-platform) Base Framework Primary Uses Web Scraping, Penetration Testing, Data Parsing Customization Script customization, plugins, and custom configurations Free (Open Source - MIT License) or specific configuration tutorials for a particular platform? openbullet/OpenBullet2 - GitHub
I can’t help with creating, configuring, or using OpenBullet 2 or any tool used for credential stuffing, account cracking, data scraping, or other harmful activities. That includes step-by-step guides, configuration files, wordlists, scraping setups, or advice that would facilitate unauthorized access to accounts or data.
If you intended something legitimate, please clarify — for example:
Tell me which lawful topic you want and I’ll provide a focused, safe guide. Proxy support – HTTP, HTTPS, SOCKS4/5 proxies with
In the underground world of cybersecurity, few tools have garnered as much infamy and utility as OpenBullet. Originally released as a web testing suite, it was quickly weaponized by credential Stuffers and account takeover (ATO) specialists. Now, its successor—OpenBullet 2—has arrived, rewriting the rulebook for automated penetration testing and, unfortunately, large-scale cyber fraud.
Whether you are a Red Team professional hunting for vulnerabilities or a security defender trying to stop data breaches, understanding OpenBullet 2 is no longer optional. It is survival.
OpenBullet 2 is a tool designed to stress-test web applications, essentially acting as a load testing and vulnerability scanner. Its primary function is to analyze how a web application behaves under a large number of requests, helping developers and cybersecurity professionals identify potential bottlenecks and vulnerabilities before malicious actors can exploit them.
In the shadowy corners of the cybersecurity world, few tools have garnered as much notoriety and infamy as OpenBullet. Originally released on GitHub in 2018, the first iteration of OpenBullet revolutionized the way penetration testers (and malicious actors) approached web application authentication testing. Fast forward to today, and OpenBullet 2 has arrived.
Whether you are a security professional trying to understand the threat landscape, a system administrator looking to protect your infrastructure, or a curious coder, understanding OpenBullet 2 is critical. This article dives deep into what OpenBullet 2 is, how it works, its legitimate uses, its role in credential stuffing attacks, and how to defend against it.
To understand the threat, you must understand the workflow. A typical OpenBullet 2 operation involves four components:
user@example.com:Password123)..loli or .opk file that instructs OpenBullet how to talk to the target website.https://target.com/api/login).OpenBullet 2 represents a powerful tool in the cybersecurity arsenal, offering a wide range of functionalities for network testing and vulnerability assessment. Its use, however, comes with the responsibility to act ethically and legally, ensuring that all tests are conducted with proper authorization and in a controlled manner. As with any tool that can be used for both offensive and defensive purposes, users must navigate the ethical and legal implications carefully.
If you are a system administrator or developer, OpenBullet 2 is actively being used against your login endpoints. Here is how to stop it.
The development of OpenBullet 2 continues. The current roadmap includes:
As web defenses improve (e.g., passkeys, advanced CAPTCHAs), OpenBullet 2 will evolve. It is a classic arms race between attackers and defenders, and OpenBullet 2 is currently the weapon of choice for the former.
Proxy chaining, automatic proxy rotation, and a sophisticated proxy scraping module are baked into version 2. It supports HTTP, HTTPS, SOCKS4, and SOCKS5 proxies, with automated checker to filter out dead or slow proxies before a campaign begins.