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Increasingly large companies are utilising Rust in their systems, either existing or new. Most uses focus on how it can help in managed environments, such as within a system with a running OS to handle memory allocations, allowing for an increased level of abstraction and useful tooling that can take advantage of functionality that the kernel can provide. […]

This executable blog post is the fourth in a series related to machine learning and is a fascinating trifecta involving hardened cryptography software, embedded IoT-type hardware, and deep machine learning techniques. While the AES algorithm is designed such that a brute-force secret key guessing attack would likely finish ‘sometime near eternity’, the power side-channel attack […]

This executable blog post is the third in a series related to machine learning and explores code generation from a 16 billion parameter large language model (LLM). After a brief look under the hood at the LLM structure and parameter allocation, we generate a variety of Python functions and make observations related to code quality […]

This is a four part blog post series that starts with Rustproofing Linux (Part 1/4 Leaking Addresses). Shared memory is often used to share data without the performance hit of copying. Whenever a shared resource is consumed by one component while being modified by another component, there is potential for Time-Of-Check-Time-Of-Use (TOCTOU) or Double Fetch […]

This is a four part blog post series that starts with Rustproofing Linux (Part 1/4 Leaking Addresses). In the C programming language, integer types can be a bit confusing. Portability issues can arise when the same code is used in multiple hardware architectures or operating systems. For example, int is usually 32-bit, but could also […]

This is a four part blog post series that starts with Rustproofing Linux (Part 1/4 Leaking Addresses). This post uses a simple example to demonstrate a class of vulnerability that we encounter quite frequently when auditing kernel drivers and firmware. It’s a race condition, or more precisely a TOCTOU vulnerability. The complete vulnerable C driver […]

Rust is a programming language guaranteeing memory and thread safety while still being able to access raw memory and hardware. This sounds impossible, and it is, that’s why Rust has an unsafe keyword which allows a programmer to dereference a raw pointer and perform some other dangerous operations. The dangerous code is effectively contained to […]

This blog post is the second in a series related to machine learning, and demonstrates exactly how a data poisoning attack might work to insert a backdoor into a facial authentication system. The simplified system has similarities to that which the TSA is running a proof of concept trial at the Detroit and Atlanta airports. As background, […]

Web3 Decoder is a Burp Suite Extension that allows to decode “web3” JSON-RPC calls that interact with smart contracts in a EVM blockchain. As it is said that a picture is worth a thousand words, the following two screenshots shows a Raw JSON-RPC call, and its decoded function call: Background When auditing a DApp (Decentralized […]

Summary ExpressLRS is a high-performance open source radio control link. It aims to provide a low latency radio control link while also achieving maximum range. It runs on a wide variety of hardware in both 900 Mhz and 2.4 GHz frequencies. ExpressLRS is very popular in FPV drone racing and other remote control aircraft. Using […]