Nmap

How To: Automate Brute-Force Attacks for Nmap Scans

Using Hydra, Ncrack, and other brute-forcing tools to crack passwords for the first time can be frustrating and confusing. To ease into the process, let's discuss automating and optimizing brute-force attacks for potentially vulnerable services such as SMTP, SSH, IMAP, and FTP discovered by Nmap, a popular network scanning utility.

How To: Easily Detect CVEs with Nmap Scripts

Nmap is possibly the most widely used security scanner of its kind, in part because of its appearances in films such as The Matrix Reloaded and Live Free or Die Hard. Still, most of Nmap's best features are under-appreciated by hackers and pentesters, one of which will improve one's abilities to quickly identify exploits and vulnerabilities when scanning servers.

How To: Use a Misconfigured SUID Bit to Escalate Privileges & Get Root

Gaining access to a system is always exciting, but where do you go from there? Root or bust. Sure, a compromised host is a great way to run a botnet, or do some other boring, nefarious thing—but as hackers, we want root. We also want to take the easiest path possible, search out low-hanging fruit, and exploit them. SUID programs are the lowest of the low-hanging fruit.

Hack Like a Pro: Digital Forensics for the Aspiring Hacker, Part 10 (Identifying Signatures of a Port Scan & DoS Attack)

Welcome back, my budding hackers! As I have mentioned many times throughout this series, knowing a bit of digital forensics might keep you out of a lot of trouble. In addition, digital forensics is a burgeoning and high paying career. Some knowledge and certifications in this field will likely help you land a Security Engineer position or put you on the Incident Response Team at your employer.

Hack Like a Pro: Advanced Nmap for Reconnaissance

Welcome back, my novice hackers! Reconnaissance is one of the most important preparatory steps to hacking. As I have emphasized many times before here on Null Byte, you must know the operating system, the ports, the services, the applications, and sometimes even the language of the target to be effective. If you haven't taken the time to gather this info, then you are likely wasting your time.

How To: Enumerate NetBIOS Shares with NBTScan & Nmap Scripting Engine

NetBIOS is a service that allows for communication over a network and is often used to join a domain and legacy applications. It is an older technology but still used in some environments today. Since it is an unsecured protocol, it can often be a good starting point when attacking a network. Scanning for NetBIOS shares with NBTScan and the Nmap Scripting Engine is a good way to begin.

How To: Tactical Nmap for Beginner Network Reconnaissance

When it comes to attacking devices on a network, you can't hit what you can't see. Nmap gives you the ability to explore any devices connected to a network, finding information like the operating system a device is running and which applications are listening on open ports. This information lets a hacker design an attack that perfectly suits the target environment.

How To: Get Started Writing Your Own NSE Scripts for Nmap

The road to becoming a skilled white hat is paved with many milestones, one of those being learning how to perform a simple Nmap scan. A little further down that road lies more advanced scanning, along with utilizing a powerful feature of Nmap called the Nmap Scripting Engine. Even further down the road is learning how to modify and write scripts for NSE, which is what we'll be doing today.

Hack Like a Pro: Scripting for the Aspiring Hacker, Part 2 (Conditional Statements)

Welcome back, my greenhorn hackers! I recently began a series on scripting and have received such positive feedback that I'm going to keep this series going. As I've said before, to graduate from the script kiddie to the pro hacker, you'll need to have some scripting skills. The better you are at scripting, the more advanced your hacking. Ultimately, we are leading up to developing the skills to build your own zero day exploits.

How to Hack Databases: Hunting for Microsoft's SQL Server

Welcome back, my fledgling hackers! The database is the hacker's "pot-of-gold," as it contains information that is very valuable to both the business and the hacker. In this, the second of my series on hacking databases, we're on the "hunt" for Microsoft's SQL Server. Although far from the most commonly used database (Oracle hold's that title), Microsoft's SQL Server is very often found in small-to-medium sized businesses. Even a few big businesses use it.

Hack Like a Pro: How to Perform Stealthy Reconnaissance on a Protected Network

Welcome back, my fledgling hackers! One of the first issues any hacker has to address is reconnaissance. Before we even begin to hack, we need to know quite a bit about the target systems. We should know their IP address, what ports are open, what services are running, and what operating system the target is using. Only after gathering this information can we begin to plan our attack. Most hackers spend far more time doing reconnaissance than exploiting.

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