blackhole pentesting

Until now, the global security community believed that TCP ports end at 65535. This assumption was widely accepted, documented, and implemented in virtually every scanner on the market. It is rooted in a simple math problem involving only 0 and 1. The calculation appeared sound, was easy to implement, and therefore became an unquestioned industry standard. For decades, scanners, specifications, and compliance frameworks have relied on it.

After extensive research and multiple confirmed sightings during manual security assessments, I can finally disclose what many suspected but could never prove:

TCP port 65536 does exist.

Port 65536 appears precisely at the moment when automated tooling confidently reports “no findings” and moves on. In many cases, the most critical issues were discovered shortly after traffic on this port was “observed”.

Administrators attempting to block 65536/tcp via firewall rules have reported no success, as firewalls consistently claim that the port is out of range.

Further research is ongoing.

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Predicted to be a trending topic in 2024, it is already taking off at the end of 2023. The first Google Ads on the topic of blackhole penetration testing are be delivered in Google Search:

Penetration tests based on the blackholing approach – a so-called blackhole pentest – have many advantages:

• They are primarily performed by a special blackhole pentest scanner and thus have a high degree of automation. They are therefore cost-effective compared to a normal penetration test and at the same time deliver meaningful results – in contrast to the use of classic vulnerability scanners.
• Through their innovative AI approach based on a globally distributed blockchain, they find all vulnerabilities.
• Even the classic distinction between whitebox, greybox or blackbox is no longer necessary. Blackholing Penetration Testing is already by definition low in photons and thus extraordinarily healthy for Homo sapiens sitting in offices – and that for Her, Him and the diverse people.

Blackholing Penetration Testing will surely replace the classic Penetration Testing with the typical bullshit bingo like Ethical Hacking, Red Teaming, Blue Teaming etc. and revolutionize the market. Blackholing Penetration Testing will be the new trending topic in 2024, stay tuned!