How to Hack a Web Server?

Since digital data increases exponentially, hacking also increases simultaneously. The primary purpose of hackers is to access the internet or system to steal organizational data. Moreover, many organizations merely rely on web-based applications because users easily interact over the internet. So, the configuration of the system or internet data becomes very crucial. Poor or improper security leads to server hacks, and the main objective of server hacks is to steal confidential data.

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 In this blog, we shall discuss how hackers use a proxy server and How to Hack a Web Server?

Moreover, The operation of a server, the best web servers available, web server vulnerabilities, web server assaults, tools, and countermeasures to defend against such attacks are some of the subjects we will be discussing.

In 2018, a big server attack occurred for GitHub. GitHub is one of the famous online code management servers used by thousands of developers. It was hit by a DDoS attack which brought a significant influx of traffic, estimated at 1.3 terabits per second. 

Instead of using botnets, attackers employed mem caching, a caching solution that speeds up networks and webpages. The attackers were able to spoof GitHub’s IP address and then significantly increase the volume of traffic streaming to the website.

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What are Web Servers?

Websites are hosted on web servers, which can be hardware, software, or both. Web servers connected to back-end databases run multiple apps on various operating systems. The number of web servers has grown recently as web applications have become the predominant online service. Web hosting, or data storage for websites and web applications, is where web servers are most frequently utilized.

How does a Web Server work?

The domain name can access the website, and we post content to the target user using Hypertext Transfer Protocol. A web server is considered hardware, and data stored or hosted on the web server is software. So, a web server represents the hardware or software, or both can be.

It is utilized for many things, including file transformation and email communications. The same file, or any other file, can be efficiently delivered to millions of website visitors simultaneously due to web servers’ massive capability.

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Web Server Security Issue 

The web server is hardware that stores a massive amount of data, files, and applications related to the website, including contents, images, etc. So, hackers try to find vulnerabilities in configuration and exploit the website by hacking tools. 

Some Vulnerabilities may include

• Inappropriate directory permissions
• Absence of system
• Inappropriately installed SSL certificates
• Allows for pointless services
• Configuring default

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Top 3 standard Web Server software 

• Apache HTTP Server – It is a common server utilized in the industry. It is free and open-source software used for operating systems such as Windows, Mac OS, Linux, and many others. 
• Microsoft Internet Information Services (IIS) – It is specifically designed for Microsoft platforms and is also a free or open-source web server. 
• Nginx – Igor Sysoev developed this open-source, free software, which made it available to the public in 2004. The reverse proxy, load balancer, mail proxy, and HTTP cache are additional functions of this web server.

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Now, we shall discuss the type of hacking and hacking methodology in detail:

Types of Web Server Attacks     

Web Server Attacks include many techniques. Some of them are provided below: 

Dos/DDoS   

In Denial of Service, the hackers send multiple service request packets, devastating the web server’s servicing ability and resulting in the unavailability of service to the visitor. 

DNS Server Hijacking 

DNS Server Hijacking is an attack where hackers tend to modify the DNS configuration. 

Malware, in which attackers show unwanted advertisements to generate revenue, and phishing, in which attackers display fraudulent websites to steal credentials, are the two primary purposes of DNS redirection.

DNS Amplification Attack   

In a DNS amplification attack, the attacker sends a DNS request to an open DNS resolver with a fake IP address, causing it to respond to that IP with a DNS response.

Directory Traversal Attacks 

Using dot and slash sequences, attackers can use an HTTP attack to access protected files and expose personal data about the system.

Man in the Middle Attack 

A man-in-the-middle is a hack in which the attacker privately precludes and reroutes messages between two parties who assume they share details directly.

Phishing Attacks

A Phishing attack is when hackers steal all our confidential data, such as username, credential, password, credit card number, and IP address. 

A pattern of fraudulent attempts seems to be made by a reliable source. Scammers use emails and SMS messages to mislead you in a phishing attack.

Website Defacement

In Website Defacement, an attacker tends to change the visual representation of the website and web page. So, the SQL injection attacker primarily utilizes this type of attack. An attacker can modify a query and take advantage of the web server by adding SQL strings.

Web Server Misconfiguration  

A web server is misconfigured when unnecessary services are enabled, and default settings are used. The attacker may discover and exploit vulnerabilities in remote functions or default credentials. Systems are easily susceptible to attacks like SQL Injection and Command Injection.

HTTP Response Splitting Attacks 

HTTP Response Splitting is a straightforward attack when the attacker sends a splitting request to the server, which results in the splitting of a response into two responses by the server. The second response is in the hand of the attacker and is easily redirected to the malicious website. 

Web Cache Poisoning 

HTTP Response Splitting is a simple attack in which the attacker sends a splitting message to the server, which causes the server to split the response into two responses. The second answer is in the attacker’s control and is quickly forwarded to the malicious website.

SSH Brute Force Attacks 

With brute force, an attacker submits several passwords to guess login information. When a hacker uses an SSH brute force attack, the SSH tunnel is forced to use an encrypted tunnel. The hosts communicate with one another through the encrypted tunnel. The attacker now has unrestricted access to the tunnel.

Web Server Password Cracking Attacks

This attack involves the hacker breaking the server credentials and using them to launch more attacks. 

Some examples are Hydra, John the Ripper, Hashcat, Aircrack, and other popular password-cracking programs.

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Hacking Methodology

Information Gathering 

Footprinting 

• Web Server Footprinting  

Vulnerability Scanning 

• Authenticated Scan
• Unauthenticated Scan

Session Hijacking

Password Attacks

•  Offline Attack 
• Passive Online Attack
• Active Online Attack 
• Default Passwords 
• Non-Electronic Attack

Now, you would understand How to Hack a Web Server? What is a server hack? And how hackers use a proxy server. So, to learn more about hacking, you can join an Ethical Hacking course in Bangalore and learn the core concepts of hacking techniques, tools, and the difference between hacking and cracking.