x86matthew @x86matthew
C / asm / system emulation / reverse engineering. @the_secret_club x86matthew.com UK Joined June 2020-
Tweets95
-
Followers21K
-
Following189
-
Likes361
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/…
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 🙂

Florian Roth ⚡️ @cyb3rops
207K Followers 3K Following Head of Research @nextronsystems #DFIR #YARA #Sigma | detection engineer | creator of @thor_scanner, Aurora, Sigma, LOKI, YARA-Forge | always busy ⌚️🐇 | vi/vim
chompie @chompie1337
83K Followers 1K Following hacker, weird machine mechanic, X-Force Offensive Research (XOR)
Justin Elze @HackingLZ
65K Followers 5K Following CTO @TrustedSec | Former Optiv/SecureWorks/Accuvant Labs/Redspin | Race cars
GuidedHacking @GuidedHacking
53K Followers 393 Following Reverse Engineering & Game Hacking Courses @ https://t.co/Dl5ED4o7YS
Grzegorz Tworek @0gtweet
36K Followers 2K Following My own research, unless stated otherwise. Not necessarily "safe when taken as directed". GIT d- s+: a+ C++++ !U !L !M w++++$ b++++ G-
Yarden Shafir @yarden_shafir
24K Followers 311 Following A circus artist with a visual studio license
Adam Chester 🏴�... @_xpn_
36K Followers 502 Following Hacker for Hire at @SpecterOps | Blog at https://t.co/tjfTOllCEu | Insta at https://t.co/PqR6CZPwjl
Rad @rad9800
9K Followers 455 Following irrational. founder. building solutions to secure organizations. @deceptiq_
Josh @passthehashbrwn
10K Followers 334 Following Adversarial Simulation at IBM, tweets are mine etc.
mgeeky | Mariusz Bana... @mariuszbit
14K Followers 823 Following 🔴 Operator, Initial Access afficionado, Researcher, ex-AV engine developer, ex-Malware analyst 🦋 @mgeeky.bsky.social 🫖 green tea lover
hasherezade @hasherezade
89K Followers 909 Following Programmer, #malware analyst. Author of #PEbear, #PEsieve, #TinyTracer. Private account. All opinions expressed here are mine only (not of my employer etc)
sn🥶vvcr💥sh @snovvcrash
12K Followers 490 Following Sr. Penetration Tester / Red Team Operator @ptswarm :: Author of the Pentester’s Promiscuous Notebook :: He/him :: Tweets’re my pwn 🐣
an0n @an0n_r0
13K Followers 727 Following CRT(E|O|L) | OSCP | @RingZer0_CTF 1st (for 2yrs) | HackTheBox Top10 | RPISEC MBE | Flare-On completer | GoogleCTF writeup winner | SSD research | Math MSc |🇭🇺
DebugPrivilege @DebugPrivilege
40K Followers 2K Following Windows Nerd | Ex-MSFT | Microsoft MVP in Windows and Devices | Interested in Security, Debugging, and Windows Internals.
Will Dormann is on Ma... @wdormann
26K Followers 1K Following I play with vulnerabilities and exploits. I used to be here on Twitter but now I'm here: @[email protected] https://t.co/hXggdAVkSQ
b33f | 🇺🇦✊ @FuzzySec
33K Followers 1K Following 意志 / Antiquarian @ IBM X-Force / Team 501 / Ex-TORE ⚔️🦅 / I rewrite pointers and read memory / AI Psychoanalyst / Teaching @CalypsoLabs
N Fh @NFh811049399491
1 Followers 44 Following
jions jack @JionsJ41789
0 Followers 146 Following
Subi @subuuwu
12 Followers 102 Following
r1bersec @r1bersec
5 Followers 377 Following
abe @aftergrapes
0 Followers 64 Following
陈小渝 @VX4p6W84Vd3701
0 Followers 4 Following
Etron Muské @smuxNahla
0 Followers 21 Following
Osur @Osur_Gaetano
44 Followers 1K Following Tweet about Software Engineering, Application Security, Java, Springboot, Ruby and Rails framework
greygangy @greygangy
27 Followers 394 Following
Mario @Mario783250
1 Followers 60 Following
Mohamed A. Sharaf @Mohamed07736742
12 Followers 287 Following
Infosec X @0xInfoSecX
20 Followers 223 Following Malware Analyst, reporting on cybersecurity threats, data breaches, and industry trends @ SecurityWire. #Infosec #Cybersecurity #Malware #EDR 🇺🇸
ldefa @Luca24460145612
2 Followers 91 Following
PossumSec @Possum_Sec
5 Followers 552 Following
0xAether @intheaetherr
145 Followers 1K Following i fix things. i break them too. git clone backorifice && ./infect --nostalgia Crux sacra sit mihi lux! Nunquam draco sit mihi dux!
Mr Holiday @mrholiday2005
5 Followers 83 Following
Raul Muñoz @RaulMuo16535398
55 Followers 1K Following Cibersecurity,Threats Intelligence Engineer, Cyber Threats. Focusing on the problem is not the Solución.
Omar Mo @OmarMo2789
0 Followers 157 Following
Uud Udu @udu25220
6 Followers 324 Following
anhed0nic @anhed0nic_esq
0 Followers 17 Following
Mahadev Fatke @mahadev4744
2 Followers 100 Following
Jamie Peck @nonvenomous97
8 Followers 71 Following
Mini Devi @MiniDevi521400
2 Followers 60 Following
evizero @evizero2
14 Followers 920 Following
Urekym @Urekym
40 Followers 223 Following
Mr F. @fulberm
4 Followers 38 Following
Michael elizarov @Michaelelizaro2
6 Followers 362 Following
Vinod Naveen @vinod__naveen
6 Followers 108 Following
Jennyfer Orn @OrnJennyfe96066
78 Followers 4K Following
Dmitry Kireev @infinitesuns
37 Followers 106 Following
Matthew @Matthew1_mur
3 Followers 63 Following Adventure-seeker, coffee enthusiast, and occasional shower singer 🤟☕️ | Living life one epic story at a time! #LifeOfAdventure #CoffeeLover
Aspen Mayer @aspenmayer
730 Followers 6K Following a person on the internetᵍᵐ🧢 collector | saber rattling as a service | H͇͍̥A̩̬̹͔̬̘̫͜C̛̝̪͎͈͍̥̥K̼̘̬̺̞ ̻̥̩̠͈̜̹̕T̫̙̝̭H̞̠̟E̺̯̰͚͕̟ ̧̮͚͕P̕L̨Ą͙̰̺̞ͅN̸̬͓̰͇E̦̰̪̦͎̻͉T͈͕̖̤̥͕
LMGroyper @2plash6
114 Followers 937 Following Far-right, anti-Zionist, Nietzsche-right America First! Pro-police, anti-hedonist, Save the white race! Deport illegals. Tedpilled Langan and Mangione fan.
OT Hackz @OT_Hackz
10 Followers 65 Following Industrial control systems | OT security | “Circuit born, binary fed, OT is in my veins.”
vmpr0be @vmpr0be
0 Followers 19 Following
Akc @Akc20015
0 Followers 92 Following
abdulbaset mohammed @Abdulbaset2030
36 Followers 2K Following مهندس في مجال تقنيه المعلومات والامن السيبراني
Florian Roth ⚡️ @cyb3rops
207K Followers 3K Following Head of Research @nextronsystems #DFIR #YARA #Sigma | detection engineer | creator of @thor_scanner, Aurora, Sigma, LOKI, YARA-Forge | always busy ⌚️🐇 | vi/vim
chompie @chompie1337
83K Followers 1K Following hacker, weird machine mechanic, X-Force Offensive Research (XOR)
Justin Elze @HackingLZ
65K Followers 5K Following CTO @TrustedSec | Former Optiv/SecureWorks/Accuvant Labs/Redspin | Race cars
GuidedHacking @GuidedHacking
53K Followers 393 Following Reverse Engineering & Game Hacking Courses @ https://t.co/Dl5ED4o7YS
Grzegorz Tworek @0gtweet
36K Followers 2K Following My own research, unless stated otherwise. Not necessarily "safe when taken as directed". GIT d- s+: a+ C++++ !U !L !M w++++$ b++++ G-
Yarden Shafir @yarden_shafir
24K Followers 311 Following A circus artist with a visual studio license
Adam Chester 🏴�... @_xpn_
36K Followers 502 Following Hacker for Hire at @SpecterOps | Blog at https://t.co/tjfTOllCEu | Insta at https://t.co/PqR6CZPwjl
Rad @rad9800
9K Followers 455 Following irrational. founder. building solutions to secure organizations. @deceptiq_
Josh @passthehashbrwn
10K Followers 334 Following Adversarial Simulation at IBM, tweets are mine etc.
hasherezade @hasherezade
89K Followers 909 Following Programmer, #malware analyst. Author of #PEbear, #PEsieve, #TinyTracer. Private account. All opinions expressed here are mine only (not of my employer etc)
DebugPrivilege @DebugPrivilege
40K Followers 2K Following Windows Nerd | Ex-MSFT | Microsoft MVP in Windows and Devices | Interested in Security, Debugging, and Windows Internals.
Will Dormann is on Ma... @wdormann
26K Followers 1K Following I play with vulnerabilities and exploits. I used to be here on Twitter but now I'm here: @[email protected] https://t.co/hXggdAVkSQ
b33f | 🇺🇦✊ @FuzzySec
33K Followers 1K Following 意志 / Antiquarian @ IBM X-Force / Team 501 / Ex-TORE ⚔️🦅 / I rewrite pointers and read memory / AI Psychoanalyst / Teaching @CalypsoLabs
klez @KlezVirus
8K Followers 709 Following Independent Cyber Security Researcher - Opinions are my own
Stephen Sims @Steph3nSims
24K Followers 833 Following Perpetual Student | SANS Fellow | Musician | Braggart Hater | Gray Hat Hacking | VR | 🏂 | deadcode | https://t.co/CadJehomsU
Thomas Roccia 🤘 @fr0gger_
32K Followers 2K Following AI Security x Threat Intel · Sr. Threat Researcher @Microsoft · Creator of #Unprotect & #NOVA · Malware Warlock · Python 🧡 · Prev @McAfee_Labs · Views mine 😈
Hollie Hennessy @HollieHennessy
4K Followers 737 Following Lead Analyst covering IoT and OT Cybersecurity. London. Foodie. Classicist. Views are my own.
John U @jdu2600
684 Followers 345 Following He/him. Security Research Engineer @preluderesearch. ex-@elasticseclabs ex-@CyberGovAu
Jonathan Peters @cod3nym
777 Followers 102 Following Threat Researcher | Detection Engineer @nextronsystems @nextronresearch #Yara enthusiast | C# Developer
DB @javidx9
6K Followers 326 Following That guy from OneLoneCoder. Programmer of BRAINS, Writer of CODE, Builder of ROBOTS, Player of GUITARS, Streamer of NONSENSE https://t.co/lNxQXhnmRn
Bwit @BwitneyHouston
24 Followers 15 Following
John Starks @gigastarks
2K Followers 94 Following Virtualization architect at Microsoft. WSL, Hyper-V, Windows containers, Azure.
Asuka Nakajima | 中�... @AsuNa_jp
10K Followers 980 Following Senior Security Research Engineer @Elastic / BlackHat USA & Asia Review Board / CTF for GIRLS / 著書『サイバー攻撃』/ サイバーセキュリティに関する総務大臣奨励賞 / My tweets are my own opinion
ko1N @ko1N1337
2K Followers 233 Following
Cristina Cifuentes @criscifuentes
2K Followers 287 Following Latina, migrant, mother and wife, researcher, teacher, mentor, leader. Mother of decompilation
Olivia Gallucci ✨ @OliviaGalluccii
5K Followers 1K Following Security @ Datadog | MacOS Internals | #FOSS Advocate | Opinions ≠ Employer | @intelligentCTF @oghealthfitness | RIT | Prev. Apple, SECUINFRA, US Govt
Joel Höner @athre0z
602 Followers 192 Following I build stuff that makes other stuff faster. Co-founder and CTO of @zystemio. Co-creator of https://t.co/UGbDLMAIx6. Previously: $ESTC, optimyze
dinero @dinqr0
586 Followers 584 Following game security @ somewhere.. | prev: co-founder @BackEngineerLab | interests in software protection, drm, anticheat, compilers, game security
qfrtt @qfrtt1
344 Followers 183 Following independent security researcher proud member of @the_secret_club
Travis Goodspeed @travisgoodspeed
26K Followers 4K Following Merchant of Dead Trees and Licensed Proselytizer of the Gospel of the Weird Machines with Pwnage, PoC, and Secular Rock.
Crisis of Conscience @crisisofconsc
11K Followers 2K Following TikTok creator. IT Support - L3 Engineer. Gamer. Resto Druid in WoW. Doctoral student in IT. Demon in disguise. I really hate Microsoft Teams.
Adam Niezabitowski @_0xnobody_
787 Followers 107 Following I love breaking things and putting them back together. Anti-cheat @esportal / @pglesports, computer engineering @tcddublin, research @the_secret_club.
brymko @brymko
813 Followers 319 Following @FluxFingers, @allesctf, @Sauercl0ud, @the_secret_club Exploit Dev, Security Researcher, Hobby Quant, Solving Problems
Cher Scarlett 🌌 @cherthedev
49K Followers 2K Following 🦋 https://t.co/bDmUt3vs6V SWE x-@Apple x-@Blizzard_ent studying physics | @nasajpl @caltech @earthscope_sci
Satoshi Tanda @standa_t
8K Followers 395 Following Software security engineer and trainer https://t.co/tenaquooTc
xenocidewiki @xenocidewiki
522 Followers 698 Following CTFing for @0rganizers. Member of @the_secret_club.
ic3qu33n @nikaroxanne
2K Followers 207 Following reverse engineer | hacker | vx artist | malware witch | my artistic process is a daemon process. @[email protected]
ᅟ𝖎𝖑𝖑𝖜�... @xillwillx
3K Followers 561 Following I am whatever you say I am. ex-Mandiant red team hax0r former blue check
Nick Peterson 🇺�... @nickeverdox
3K Followers 279 Following @RiotGames - anticheat team. Opinions expressed are obviously my own. https://t.co/foRcgwMV3U
Rachel Tobac @RachelTobac
108K Followers 8K Following Friendly Hacker & CEO @SocialProofSec security awareness/social engineering prevention Training, Videos, Talks | 3X @DEFCON🥈| Board @WISPorg | Ex @CISAgov TAC
Devon Kerr @_devonkerr_
8K Followers 724 Following Director of Threat Research and @ElasticSecLabs team lead; custodian of secret histories. Posts are my own.
Ange @angealbertini
25K Followers 910 Following Reverse engineer, file formats expert. Corkami, CPS2Shock, PoC||GTFO, Sha1tered, Magika... Security engineer @ Google. He/him.
Andreas Kling @awesomekling
53K Followers 1K Following building @ladybirdbrowser. recovering addict. husband of @katalinkult. uncle. gymnasium brother.
Steve Eckels @stevemk14ebr
2K Followers 320 Following Creator. Hacker. Reverse engineer on Google Mandiant FLARE. Opinions mine not employers.
Michal Strehovský @MStrehovsky
7K Followers 178 Following Moved to Bluesky - https://t.co/Y20BvEBfjl. The account also bridges to Mastodon at @[email protected]
🤷♂️ @floesen_
2K Followers 98 Following
Tim Blazytko @mr_phrazer
5K Followers 258 Following Binary Security Researcher, Chief Scientist at https://t.co/XhN07utPLu and Trainer. Also at https://t.co/YBfgAt3kc7