How I Hacked and Secured a Croatian Government Website: A White Hat Journey

Harshit
3 min readAug 3, 2024

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In the realm of cybersecurity, tales of hacking often evoke images of nefarious activities, shady characters, and ill-gotten gains. However, ethical hacking — conducted with the intention of identifying and rectifying security flaws — plays a crucial role in safeguarding our digital world. This is the story of how I, a white hat hacker, discovered and responsibly disclosed a critical vulnerability in a Croatian government website, bypassed its WordPress admin, and secured the entire domain.

The Initial Discovery

Every successful penetration test begins with reconnaissance. While exploring publicly accessible Croatian government websites for potential security vulnerabilities, I stumbled upon one site that piqued my interest. The site was powered by WordPress, a popular content management system (CMS) known for both its flexibility and frequent security issues when improperly configured.

Identifying the Vulnerability

The first step was to identify any obvious flaws in the WordPress installation. Using a suite of tools like WPScan, I checked for outdated plugins, themes, and core files. Almost immediately, I found several plugins that had not been updated in over a year. One particular plugin, known for a critical vulnerability, was still in use.

Exploiting the Weakness

With the vulnerability identified, the next step was to exploit it — ethically. I used a local development environment to simulate the potential exploit. This approach ensured that I wouldn’t inadvertently cause any harm to the live site during my tests.

Bypassing the Admin

The vulnerable plugin allowed for an unauthenticated file upload. By exploiting this, I was able to upload a malicious PHP file that granted me remote code execution (RCE) capabilities. With RCE, I had the ability to execute commands on the server and, crucially, bypass the WordPress admin authentication.

Gaining admin access through this backdoor allowed me to observe the inner workings of the website and identify further security lapses, such as weak passwords and insecure database configurations.

Securing the Domain

Having demonstrated the vulnerability, my next step was to secure the website. Here’s a detailed account of the actions I took:

1. Removing Malicious Code

First, I removed the backdoor and any other malicious files I had uploaded. It was crucial to ensure no other threat actors could exploit the same vulnerability.

2. Updating Plugins and Themes

I updated all outdated plugins and themes to their latest versions, ensuring that known vulnerabilities were patched.

3. Strengthening Authentication

I implemented stronger password policies and recommended enabling two-factor authentication (2FA) for all admin accounts.

4. Database Security

The database credentials stored in the wp-config.php file were updated to use strong, unique passwords. Additionally, I suggested moving the database to a more secure, isolated environment.

5. Regular Security Audits

I scheduled regular security audits and scans to ensure the site remained secure over time.

Responsible Disclosure

With the site secured, I reached out to the relevant authorities through their official contact channels. I provided a detailed report of the vulnerability, the steps I took to exploit it, and the measures I implemented to secure the site. The response was overwhelmingly positive; the authorities were grateful for the proactive approach and swift resolution.

Conclusion

Hacking into a Croatian government website was never about causing disruption; it was about highlighting the importance of cybersecurity and demonstrating how ethical hacking can lead to more secure systems. By bypassing the WordPress admin and securing the domain, I contributed to the protection of sensitive government data and the overall integrity of the website.

In a world where digital threats are ever-evolving, the role of ethical hackers is more important than ever. We must continue to stay ahead of malicious actors, ensuring that our digital infrastructures remain robust and secure.

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Harshit
Harshit

Written by Harshit

Security researcher |Android Developer | EE | Bug Bounty Hunter | Reverse Engineering | Malware analyst

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