The tool natively supports notation for broad IP ranges. Users can input massive blocks of IP addresses (e.g., standard Class A, B, or C ranges) to perform external perimeter sweeps.
kportscan30 -net 10.0.0.0/24 -p 22,3389 -t 1000 -o results.txt Use code with caution. -net : Instructs the scanner to parse CIDR block notation. -p 22,3389 : Scans both designated ports simultaneously.
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Using KportScan 3.0 effectively requires proper configuration to avoid crashing your local network interface or triggering local router defenses. 1. Defining the Target Scope
The user interface is straightforward, focusing purely on input ranges, port selection, thread control, and a real-time results window. Discovered live hosts and open ports are saved into clean, text-based log files for easy piping into secondary analysis tools. The Mechanics of a KportScan Search kportscan 3.0
Because it is effective at finding entry points, it is a known tool in the arsenal of groups like Magic Hound for lateral movement and internal reconnaissance.
kportscan -target 10.10.10.0/24 -silent -oJ | jq '.ports[] | select(.service == "ssh")'
More recently, in 2024, the HardBit ransomware gang incorporated KPortScan 3.0 into their toolset. According to researchers, after using tools like NLBrute to brute-force credentials and Mimikatz to harvest them, the gang uses to spread the infection. This is part of a systematic discovery process to maximize the number of machines encrypted during the attack.
The tool typically operates as a portable executable, requiring no formal installation, which makes it ideal for quick diagnostics or portable "live" environments. The tool natively supports notation for broad IP ranges
The tool is particularly effective at discovering active RDP (Port 3389) and SMB (Port 445) services. This allows threat actors to map out potential targets for credential dumping and lateral movement. 3. Lateral Movement and Ransomware
In cybersecurity, scanning software is inherently dual-use. Defense teams rely heavily on active network mapping to discover unauthorized open ports or unpatched corporate endpoints before an attack occurs.
: The ability to export scan results and generate reports is a valuable feature for documenting network configurations and changes over time. KPortScan 3.0 facilitates this process, making it easier to share findings with colleagues or management.
Some of the key features that make kportscan 3.0 a standout tool include: -net : Instructs the scanner to parse CIDR block notation
KPortScan 3.0 is far from perfect. Its lack of development for over a decade means it contains several unpatched technical flaws. A notable example is Bug #42793 in the WineHQ database (a compatibility layer for running Windows apps on Linux). The bug report, filed in 2017, noted that . A Wine developer investigated and found that the issue was likely due to an overuse of system resources, noting that even with 800 threads, the tool didn't seem to be performing 800 simultaneous tests, yet it would hang when attempting to halt the process. This instability is a significant drawback for anyone seeking a reliable scanner.
Do you need an for lateral movement? enterprise-attack-v13.1-groups.xlsx - MITRE ATT&CK®
Its primary function is to probe Internet Protocol (IP) addresses and IP ranges to determine which network ports are open, closed, or filtered. It was developed by a user known as "krasniy" and is associated with the proxy-base website.