Neko's Knowledge Vault — 80s/90s retrowave notes from the vault

JavaScript fetch with Credentials

2026-07-21 #learning-essential-python-for-pentest-and-reverse #javascript #fetch #http #api #credentials #cookies #cors #security

Using `fetch` with Credentials in JavaScript When you call an API from JavaScript, the browser's `fetch` API does **not** automatically send cookies or HTTP authentication header…

WebSocket Protocol Security

2026-07-21 #learning-essential-python-for-pentest-and-reverse #websocket #security #networking #C2 #protocol

# WebSocket Protocol Security WebSockets are a **full-duplex, persistent communication channel** built on top of TCP, initiated through an HTTP-compatible upgrade handshake. Once…

Firewall Service Filter

2026-07-20 #powershell #firewall #windows #network-security #digital-forensics #cmdlet

A **Service Filter** in Windows Firewall with Advanced Security is a rule property that limits a firewall rule to traffic associated with a specific Windows service. Instead of ap…

Get-Member CmdLet

2026-07-20 #powershell #cmdlet #investigation #pipeline #object-discovery #digital-forensics

# Get-Member CmdLet `Get-Member` is a PowerShell discovery CmdLet that reveals the **members** (properties, methods, events, and other object attributes) of any object piped into…

Parsing Binary Formats with Construct

2026-07-17 #python #construct #binary-parsing #reverse-engineering #learning-essential-python-for-pentest-and-reverse

# Parsing Binary Formats with Construct `construct` is a Python library that lets you describe binary file layouts as data structures instead of writing manual `struct.unpack` ca…

Normalization vs Canonicalization for Security Input Handling

2026-07-15 #security #python #input-handling #normalization #canonicalization #pentest #learning-essential-python-for-pentest-and-reverse

# Normalization vs Canonicalization in Pentest Input Handling In security tooling, you often compare inputs against a signature database. The attacker controls the input, and you…

Python File Handling Pitfalls Cheat Sheet

2026-07-15 #python #file-io #security-scripting #pentest #learning-essential-python-for-pentest-and-reverse

# Python File Handling Pitfalls Cheat Sheet When writing security scripts that ingest logs, configs, signatures, or binary payloads, small file-handling mistakes can silently bre…

Global Variables in Python

2026-07-14 #python #learning-essential-python-for-pentest-and-reverse #scope #variables #clean-code

# Global Variables in Python A **global variable** in Python is a variable declared at the top level of a module file, outside any function or class. It is accessible anywhere in…

Single Responsibility Principle in Security Scripts

2026-07-14 #python #single-responsibility-principle #security-scripting #modular-design #functions #clean-code #learning-essential-python-for-pentest-and-reverse

# Single Responsibility Principle in Security Scripts The **Single Responsibility Principle** (SRP) says a function or module should have one reason to change — it should do one …

How Displays Produce Images

2026-07-13 #lcd-display-fundamentals #displays #pixels #resolution #color-depth #refresh-rate #aspect-ratio #pixel-density

# How Displays Produce Images A display creates the illusion of a continuous image by lighting up a grid of tiny picture elements called **pixels**. Even though a screen looks li…

Defensive Input Handling for Security Scripts

2026-07-13 #python #security #input-validation #defensive-programming #pentest #learning-essential-python-for-pentest-and-reverse

# Defensive Input Handling for Security Scripts Security scripts often process data that comes from untrusted or messy sources: scan output, logs, network traffic, user uploads, …

Counter in Python

2026-07-13 #learning-essential-python-for-pentest-and-reverse #python #data-structures #file-io

# Counter in Python `Counter` is a specialized dictionary class from the `collections` module in Python's standard library. It is designed for **counting hashable objects**. ## …

Designing Python Scripts for Automation and Pipelines

2026-07-13 #python #automation #pipelines #scripting #cli #pentest #powershell

# Designing Python Scripts for Automation and Pipelines A script is rarely the final destination. In pentest, forensics, and reverse engineering work, Python tools usually feed o…

Exiting a Python Script Cleanly

2026-07-13 #python #security-scripting #scripting-patterns #error-handling #learning-essential-python-for-pentest-and-reverse

# Exiting a Python Script Cleanly Scripts need to finish in a way that tells the caller (or the shell) whether they succeeded or failed. The way you exit matters for automation, …

Python Syntax Recall and Fluency for Security Work

2026-07-13 #python #learning #memory #study-techniques #security-scripting #pentest #reverse-engineering #learning-essential-python-for-pentest-and-reverse

# Python Syntax Recall and Fluency for Security Work Many learners struggle with Python syntax not because they are "bad at memorizing," but because they are trying to memorize *…

Python Essentials for Security Scripting

2026-07-13 #python #security-scripting #pentest #reverse-engineering #lesson-1 #core-python

# Python Essentials for Security Scripting A review of core Python syntax, data structures, and file I/O with an emphasis on writing clean, maintainable security scripts for pent…

Maximum Transmission Unit (MTU)

2026-07-12 #networking #TCP/IP #forensics #OSI-model #packet-analysis

# Maximum Transmission Unit (MTU) The **Maximum Transmission Unit (MTU)** is the largest size (in bytes) of a single protocol data unit that can be transmitted over a network lin…

PowerShell + Python Acquisition Pipeline

2026-07-12 #powershell #python #acquisition #digital-forensics #integration #pipeline

# PowerShell + Python Acquisition Pipeline A practical exercise pattern from the book's philosophy: use **PowerShell** for acquiring raw data from Windows systems and **Python** …

PowerShell Replace String in File

2026-07-12 #powershell #cmdlet #file-manipulation #digital-forensics #powershell-ise #operators #replace #regex

PowerShell provides several ways to replace strings inside files using the standard **verb-noun** [[CmdLet]] pairs `Get-Content` and `Set-Content`, plus the `-replace` operator. …

Internet Protocol Suite

2026-07-09 #network-forensics #TCP/IP #protocols #IP #TCP #UDP #OSI-model

# Internet Protocol Suite The **Internet Protocol Suite**, also known as the **TCP/IP protocol suite**, is the collection of protocols used to implement networking functions on t…