Fuzzing blogpost focused on fuzzing, vulnerability research, WebAssembly and Rustlang | Fuzzing Labs.
Learning Hacking & Fuzzing ressources Learn Hacking: Best Books about Fuzz Testing & Vulnerability Research (TOP 4) Today, I will like to show you my TOP 4 Hacking Books to Start learning Fuzzing and Vulnerability Research. Fuzzing: Brute Force Vulnerability Discovery – link Fuzzing for Software Security Testing and Quality Assurance – link A Bug…
Introduction to Blackbox Fuzzing 1. Binary-only Fuzzing using AFL++ QEMU mode In this really basic course, I will use AFL++ to fuzz an already compiled binary. I will first explain how afl++ QEMU mode is working and why it’s impacting the performance. Then, we will fuzz the pdfinfo binary and we will improve the coverage…
Introduction to JavaScript Fuzzing 1. JavaScript Fuzzing of npm/nodejs/code (omggif) using jsfuzz In this course, I will fuzz a JavaScript npm/nodejs library (omggif) in order to find uncaught JavaScript exceptions. I will explain how to create a fuzzing harness for this target, run the fuzzer (jsfuzz), handle expected exceptions, analyze a crash and create a…
Fuzzing Java code using Jazzer Java Fuzzer Fuzzing Java code (JSoup) using Jazzer fuzzer In this course, I will fuzz a popular Java library (JSoup) in order to find uncaught Java exception. I will explain how to create a java fuzzing harness for this target using the Jazzer java fuzzer. Then, I will run it and show you what’s happening when…
Fuzzing C code / C++ programs using honggfuzz Tutorial In this tutorial, I will show how you can start fuzzing C code and C++ programs (binutils/readelf) very easily using honggfuzz. I will first compile honggfuzz and briefly explain the main mechanism behind it. Then, I will compile the targeted program (binutils / readelf) using the honggfuzz compilers. Finally,…
Introduction to Fuzzing Golang code Fuzzing Go package using go-fuzz & libfuzzer In this course, I will first select a popular Golang library and identify the most interesting methods to fuzz. Then, I’ll explains how to use go-fuzz and libfuzzer to compile the fuzzing target. Finally, I’ll show how to run the fuzzer.https://www.youtube.com/watch?v=EsSebOAD5yw&list=PLa-iO6ehPFJgCKKiyEU__dUJVDVh-TUbT You will…
Introduction to Fuzzing Python code 1. Fuzzing Python code using pythonfuzz In this first course, I will select a popular Python package (pyasn1) and find some interesting methods to fuzz. Then, I’ll explains how to create a pythonfuzz fuzzing target and how to customize it. Finally, I’ll show how to run the fuzzer and explain…
Introduction to Fuzzing Rust code 1. Fuzzing Rust library using cargo-fuzz / libfuzzer In this course, I will first select a popular Rust library and identify the most interesting methods to fuzz. Then, I’ll explains how to use cargo-fuzz (libfuzzer) to generate fuzzing targets and how to customize them. Finally, I’ll show how to run…
Reversing Ewasm smart contracts 101 – EthCC 2020 I just gave a talk/workshop today (03/2020) at EthCC 2020 (Paris – France), about reversing Ewasm (Ethereum flavored WebAssembly) smart contract. In this talk, I briefly introduce WebAssembly concepts , Ewasm ethereum specificity and opcodes/instructions. Secondly, I show how to create Ewasm smart contracts and expose different techniques/tools…
Fuzzing javascript nodejs/npm WebAssembly parsing library with jsfuzz I asked recently on twitter what should be my next blogpost subject and voters choose this one, so here it is. In this short blogpost, I will first introduce jsfuzz, a coverage-guided javascript fuzzer for nodejs/npm packages. Then, I’ll discuss about the wasm binary parsing library I…
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