The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Cyberchef’ Category

Decoding HTML encoded source to XML text

Posted by jpluimers on 2026/03/03

For Some links on getting the most recent defragmentation time of a Windows volume I needed to copy back and forth some XML code back and forth between my ARM MacBook Pro to a remote Windows machine accessing via the Microsoft Windows App (the app formerly known as Microsoft Remote Desktop for Mac).

The problem with that is the copying would lose line breaks, which for XML meaning is no problem, but for human understandability while editing the XML in the Event View query dialog was.

So I decided to go to the “Code” view in my Classic WordPress editor (did I ever tell you much I dislike – especially the accessibility of – the not so new but still haughty named Gutenberg editor?), copied the HTML encoded form and wanted to convert it to unencoded XML text.

Well, here I got to naming confusion land, on which I will talk further below, but first two of the potential solutions:

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Posted in Cyberchef, Development, Encoding, HTML, Software Development, URL Encoding, Web Development | Leave a Comment »

A few pfSense quirks I got used to over the years

Posted by jpluimers on 2026/01/06

Everytime when installing a pfSense router from scratch, I seem to re-learn a few of the below quirks. So it was finally time to document them (:

Quite a few of my pfSense configurations are just doing routing between various networks, should not provide DHCP leases and do not always need or have a WAN connected (i.e. they are LAN-only).

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Posted in Communications Development, Conference Topics, Conferences, Cyberchef, Development, DHCP, Encoding, Event, Hardware, HTTP, Internet protocol suite, MikroTik, Network-and-equipment, pfSense, Power User, routers, Software Development, SSH, TCP, TLS, UDP | Tagged: | Leave a Comment »

CyberChef: The Cyber Swiss Army Knife – a web app for encryption, encoding, compression and data analysis.

Posted by jpluimers on 2022/06/23

[Wayback/Archive.is] CyberChef:

a simple, intuitive web app for carrying out all manner of “cyber” operations within a web browser. These operations include simple encoding like XOR or Base64, more complex encryption like AES, DES and Blowfish, creating binary and hexdumps, compression and decompression of data, calculating hashes and checksums, IPv6 and X.509 parsing, changing character encodings, and much more.

Source code at [Wayback/Archive.is] gchq/CyberChef: The Cyber Swiss Army Knife – a web app for encryption, encoding, compression and data analysis.

Via [Archive.is] Jilles🏳️‍🌈 on Twitter: “Hidden in plain sight. Rot13 cross word. Hidden Barcodes. Qr codes. Barely any InfoSec skill required. Still a hand full. Usually my to go place is: Cyberchef. I did a fun one for cyberklaas using ansi art.… “

Jilles also pointed to the solving part in [Archive.is] Jilles🏳️‍🌈 on Twitter: “See also, for solving: SCWF… “

The [Wayback/Archive.is] Solve Crypto with Force! needs to run without most script blockers, so best run it in an anonymous/private browser window.

Source code for SCWF is at [Wayback/Archive.is] DaWouw/SCWF: CTF tool for identifying, brute forcing and decoding encryption schemes in an automated way.

Screen shot of Cyberchef example “Perform AES decryption, extracting the IV from the beginning of the cipher stream” [Archive.is]:

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Posted in Barcode, Cyberchef, Development, EAN, Encoding, Encryption, Hashing, Power User, QR code, Security, Software Development | Leave a Comment »