x86matthew @x86matthew
C / asm / system emulation / reverse engineering. @the_secret_club x86matthew.com UK Joined June 2020-
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this is my short analysis of a little-known security feature built into Windows that inadvertently broke one of our authenticode signatures recently elastic.co/security-labs/…
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Another pointless weekend project - a playable version of the old 3DMaze screensaver from Windows 9x. I reverse-engineered the original screensaver binary and added user-input functionality for the controls (and fixed some other minor issues!) github.com/x86matthew/Pla…
Just released another project that I created a few weeks ago - a NES emulator for Windows written in C/C++ using pure WinAPI 🎮 github.com/x86matthew/NES…
last day at @MDSecLabs today 😢 but looking forward to some new challenges at @elastic next week!
happy to finish in the top 10 this year (only just!) #flareon11
WoWMIPS - A MIPS R4000 emulator which allows legacy Windows NT MIPS binaries to run on modern x86/64 Windows. A short series of articles describes the development of this emulator: x86matthew.com/view_post?id=m…
12 months late but it has finally arrived 🙂 #flareon9
finished for another year! #flareon10
First blog post in a while! This article describes an undocumented trick to embed executable code within (what appears to be) a read-only PE section. secret.club/2023/06/05/spo…
it has been a few years since i last wrote a game cheat. modern games don't interest me so i've gone the other way and written an aimbot for the original doom - works on windows 95 with the official binaries 🙂
16-bit solitaire is now running as it should 🙂 now i'm definitely finished with the project because i can't handle any more nights debugging minor cpu logic bugs until 5am 😥
following on from my post last week, 16-bit minesweeper now runs flawlessly in my windows 3.1 cpu/win16api emulator 🙂 i don't plan to take it any further from here but will consider writing a post covering the fun (and not so fun) bits if there is any interest in this project 🙂
i have been writing a windows 3.1 emulator in my spare time over the last few weeks, it emulates an 80286 cpu running in protected mode and forwards/translates win16 api calls to the native api at runtime. my first test program is working correctly - minesweeper is coming next 🙂
SelfDebug - A useless anti-debug trick by (sort of) forcing a process to debug itself x86matthew.com/view_post?id=s…
StealthHook - A method for hooking functions without modifying memory protection. This tool automatically discovers writable global pointers/vtable entries that are nested within the target function, enabling stealthy function hooking and interception. x86matthew.com/view_post?id=s…
reading #flareon9 writeups from other people has been interesting - it highlights how everybody (including myself) used very different methods and thought processes to solve the challenges 🙂
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