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 repnz.github.io
APC Series: User APC Internals ยท Low Level Pleasure
| | bellard.org
QuickJS Javascript Engine
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| | QuickJS Javascript Engine
| | redops.at
Direct Syscalls: A journey from high to low - RedOps - English
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| | bruteratel.com
Exception Junction - Where All Exceptions Meet Their Handler | Brute Ratel C4
6.0 parsecs away

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| | This blog is in relation to some of the hurdles I've met while debugging and researching various new features for Brute Ratel. Before we get started, let me inform you that this blog is not for beginners. It requires some knowledge about Windows internals, exception handlers, and getting your hands dirty with a debugger, preferably x64dbg. And to add to that, there's limited to near zero information on the web related to this topic, thus I spent the last 24 hours researching and writing this from scratch while being high on caffeine.
| | gpfault.net
Let's Learn x86-64 Assembly! Part 3 - Arithmetic and Logic
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| [AI summary] The text provides an in-depth exploration of various x86-64 instruction set architectures, focusing on arithmetic operations (ADD, SUB, MUL, SMUL, DIV, SDIV), logical operations (AND, OR, XOR, NOT), and control flow instructions. It details the implementation of these instructions in the QBX virtual machine, emphasizing how they emulate real x86-64 instructions while managing the flags register and handling different operand sizes (8-bit and 16-bit). The text also discusses the nuances of flag handling, register operations, and macro-based code generation to streamline instruction implementation.