Bypassing XSS filters
Published:
In this post, I am describing some payloads which I used to bypass two distinct XSS filter implementations (such as Web Application Firewalls (WAF)) as well as the approach to design them.
WebSub sequence diagram
Published:
A sequence diagram for WebSub.
The FBI recommends using ad blockers
Published:
An interesting note from the FBI.
UMA 2.0 diagrams
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Some diagrams (mostly sequence diagrams) about UMA 2.0.
Notes on X3DH
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Some notes on X3DH (Extended Triple Diffie-Hellman).
OpenSSH tunneling guide
“Welcome to the Warp Zone!”
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This post is an overview of the different tunneling options available in OpenSSH. This is inteded as a reference to use when I am explaining (every so often) how to use SSH for tunneling.
Protocol stack diagrams
Layers all the way down
Published:
A collection of ASCII-art protocol stack diagrams.
Arbitrary code execution through kitty-open.desktop file association
ニャーニャー
Published:
In Debian kitty package, the kitty-open.desktop file would associate kitty +open with several MIME types. This could be used to arbitrary trigger code execution by serving a file with such a MIME type.
This has been introduced in kitty in 73a197fcd (2022-02-06) released as part of v0.24.3. This has been fixed in v0.26.5-5 of the Debian kitty package. Fixed upstream in 537cabca7 released in v0.29.0. Other distributions such as Ubuntu Lunar are still impacted.
Analysing structured log files with simple tools
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Some tools and other notes when you just want to analyze your structured log files locally using simple tools with a focus for newline-delimited JSON (NDJSON) / JSON lines / JSON Text Sequences.
Simple terminal image display using the iTerm2 image protocol
Published:
A simple way to display image in a terminal using the iTerm2 image protocol. This is supported by iTerm2, WezTerm, recent versions of Konsole.
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