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Videos: Defective USB Cable

When I had issues with my portapack, it took me some time to remark that these issues only happened with a particular USB cable.

The SDR would work fine, and then when I would try to record or playback, the screen would turn dark.

You can see this in the following video:

What is happening, is that this particular USB cable is electrically defective: the voltage drop is too large, due to the abnormally high resistance of the cable. The portapack doesn’t receive enough power, and starts to malfunction.

In the following 2 videos, I perform various tests with that defective cable:

Videos on my video blog (with some info on the devices I used):

Defective USB Cable Testing a Defective USB Cable Measuring a Defective USB Cable

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Overview of Content Published in July

Here is an overview of content I published in July:

Blog posts:

Update: base64dump.py Version 0.0.12 Tampering With Digitally Signed VBA Projects Quickpost: curl Update XORSearch Version 1.11.4 Update: oledump.py Version 0.0.51 Cracking VBA Project Passwords ndisasm 2.15 stdin Bug Fix Update: oledump.py 0.0.52 Update: zipdump.py Version 0.0.20 Update: InteractiveSieve 0.9.1 Update: pecheck.py Version 0.7.11

YouTube videos:

Defective USB Cable Testing a Defective USB Cable Measuring a Defective USB Cable Cracking Maldoc VBA Project Passwords

Videoblog posts:

YARA’s BASE64 Strings Defective USB Cable Testing a Defective USB Cable Measuring a Defective USB Cable Cracking Maldoc VBA Project Passwords

SANS ISC Diary entries:

Wireshark 3.2.5 Released CVE-2020-5902 F5 BIG-IP Exploitation Attempt CVE-2020-5902: F5 BIG-IP RCE Vulnerability Maldoc: VBA Purging Example VBA Project Passwords Zone.Identifier: A Couple Of Observations ndisasm Update 2.15 Cracking Maldoc VBA Project Passwords Analyzing Metasploit ASP .NET Payloads