payload - Tagged - Security Boulevard
Professionally Evil Fundamentals: Introduction

Linux X86 Assembly – How To Test Custom Shellcode Using a C Payload Tester

Overview In the last blog post in this series, we created a tool to make it easy to build our custom payloads and extract them.  However, what if we want to test ...
Professionally Evil Fundamentals: Introduction

Linux X86 Assembly – How To Make Payload Extraction Easier

Overview In the last blog post of the X86 Linux assembly series, we focused on how to make our Hello World payload friendly for use as a payload in exploits.  However, we ...
Professionally Evil Fundamentals: Introduction

Linux X86 Assembly – How to Make Our Hello World Usable as an Exploit Payload

Overview In the last two tutorials, we built a Hello World program in NASM and GAS for x86 assembly.  While this can help us learn x86 assembly, it isn’t viable as a ...
Professionally Evil Fundamentals: Introduction

Linux X86 Assembly – How to Build a Hello World Program in NASM

Overview A processor understands bytecode instructions specific to that architecture.  We as humans use mnemonics to make building these instructions easier than remembering a bunch of binary codes.  These mnemonics are known ...
Professionally Evil Fundamentals: Introduction

A Hacker’s Tour of the X86 CPU Architecture

Overview The Intel x86 CPU architecture is one of the most prolific CPU architectures for desktops, laptops, and servers.  While other architectures exist and are even taking some market share with mobile ...
Professionally Evil Fundamentals: Introduction

Solving the November 13th Detective Nevil Mystery Challenge

Overview Each week on Friday, we post a social media challenge known as “Detective Nevil Mystery Challenge”.  On November 13th of 2020, we released a challenge that contained a payload and it ...
Professionally Evil Fundamentals: Introduction

Solving the November 13th Detective Nevil Mystery Challenge

Overview Each week on Friday, we post a social media challenge known as “Detective Nevil Mystery Challenge”.  On November 13th of 2020, we released a challenge that contained a payload and it ...
Reversing malware in a custom format: Hidden Bee elements

Reversing malware in a custom format: Hidden Bee elements

When we recently analyzed payloads related to Hidden Bee (dropped by the Underminer EK), we noticed something unusual. After reversing the malware, we discovered that its authors actually created their own executable ...