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Cookies, Ports and Subdomains

This post will look at how browser cookies work when used on different subdomains and on different ports. Short Answer & Summary Cookie without Domain Attribute Same Domain Dif...

Interesting Algorithms

In this post we’ll look at some cool algorithms, methods & formulas that solve interesting problems. Fibonacci Sphere Example Code Sphere Projection UV...

Frida for iOS

Introductory guide on how to use Frida to analyse iOS applications at runtime to perform actions such as search for methods, hook methods, view & modify instructions, and view & modify regi...

Cryptography - Byte by Byte ECB Decryption

In this post we’ll cover how to attack an oracle function that encrypts user supplied data concatenated with an unknown string under ECB mode while using a constant but unknown key. This post will...

Cryptography - Breaking Repeating Key XOR Encryption

In this post we’ll cover how to decrypt messages that have been XOR encrypted using a repeated key, such as 84 d2 7a 09. The method we’ll be using to break the encryption uses statistics (letter fr...

Cryptography - Breaking Single Byte XOR Encryption

In this post we’ll cover how to decrypt messages that have been XOR encrypted using a single byte key, such as b7. While this might not sound that useful, it’s a pre-cursor to breaking XOR encrypti...

Cryptography - PKCS#7 Padding

This post will show how PKCS#7 Padding works for block ciphers like DES and AES. This post includes visual examples and the edge case to be aware of. PKCS#7, which includes message padding, is defi...

BaseN Converter

This tool can convert from UTF-8 strings to BaseN (any arbitrary base). It can also convert from BaseN to UTF-8 or HEX. The conversion alphabet can also be specified for these conversions as well. ...

Maze Colouring with DFS and BFS

Maze colouring using BFS (Breadth-First Search) and DFS (Depth-First Search). For reference, the mazes in the below examples were generated using the Randomized Depth-First Search (Recursive Backtr...

FABRIK Algorithm

In this post we’ll look at how to implement the FABRIK algorithm in 2D in JavaScript using the p5.js library for drawing. The Forward And Backward Reaching Inverse Kinematics (FABRIK) algorithm is ...