C++ links: x86 Assembly
See also: Computer Architecture -- recommended background (which makes the following significantly more approachable) includes an undergraduate-level course.
Note: The main focus is on the 64-bit variant (x86-64) -- thus, primarily up-to-date materials (i.e., 64-bit, AVX) are preferred.
Assembler relaxation http://eli.thegreenplace.net/2013/01/03/assembler-relaxation
Displaying all argv in x64 assembly
http://eli.thegreenplace.net/2013/07/24/displaying-all-argv-in-x64-assembly
Gentle Introduction to x86-64 Assembly http://www.x86-64.org/documentation/assembly.html
Introduction to x64 Assembly https://software.intel.com/en-us/articles/introduction-to-x64-assembly
Processor Architecture
https://msdn.microsoft.com/en-us/library/windows/hardware/ff553442%28v=vs.85%29.aspx
x86-32 and x86-64: Architecture, Instructions, Annotated Disassembly
Redundancy of x86 Machine Code http://www.strchr.com/machine_code_redundancy
Stack frame layout on x86-64 http://eli.thegreenplace.net/2011/09/06/stack-frame-layout-on-x86-64
The x86 architecture is the weirdo http://blogs.msdn.com/b/oldnewthing/archive/2004/09/14/229387.aspx
Trivia Questions for X86 Nerds
http://www.msreverseengineering.com/blog/2015/6/9/x86-trivia-for-nerds
Discussions:
https://www.reddit.com/r/ReverseEngineering/comments/39gbxc/trivia_questions_for_x86_nerds/
https://twitter.com/rolfrolles/status/608789071645691904
Understanding the x64 code models http://eli.thegreenplace.net/2012/01/03/understanding-the-x64-code-models
Where the top of the stack is on x86
http://eli.thegreenplace.net/2011/02/04/where-the-top-of-the-stack-is-on-x86
Windows x64 ABI
Part 1: Intro to the Windows x64 calling convention
http://www.gamasutra.com/view/news/171088/x64_ABI_Intro_to_the_Windows_x64_calling_convention.php
Part 2: Stack frames
http://www.gamasutra.com/view/news/178446/Indepth_Windows_x64_ABI_Stack_frames.php
- Assembly Language Succinctly
- 2014; Christopher Rose
- https://www.syncfusion.com/resources/techportal/details/ebooks/assemblylanguage
- Low-Level Programming
- Introduction to 64 Bit Assembly Language Programming for Linux and OS X
- Ray Seyfarth
- http://rayseyfarth.com/asm/
- Introduction to Computer Organization with x86-64 Assembly Language & GNU/Linux
- Robert G. Plantz
- http://bob.cs.sonoma.edu/IntroCompOrg-x64/book.html
- Modern X86 Assembly Language Programming
- 2018; Daniel Kusswurm
- Covers x86 64-bit, AVX, AVX2, and AVX-512
- https://github.com/Apress/modern-x86-assembly-language-programming-2e
- Understanding Assembly Language
- a.k.a. Reverse Engineering for Beginners; https://yurichev.com/blog/UAL/
- https://beginners.re/
- x86-64 Assembly Language Programming with Ubuntu
- Ed Jorgensen
- http://www.egr.unlv.edu/~ed/x86.html
- Wikibooks
- x86 Assembly - https://en.wikibooks.org/wiki/X86_Assembly
- X86_Assembly: https://en.wikibooks.org/wiki/X86_Disassembly
- Programming from the Ground Up Book
- An introduction to programming using Linux assembly language
- https://savannah.nongnu.org/projects/pgubook/
- http://programminggroundup.blogspot.com/
- Download: http://download.savannah.gnu.org/releases/pgubook/
- PC Assembly Language Tutorial
alt.lang.asm https://groups.google.com/d/forum/alt.lang.asm
comp.lang.asm.x86 https://groups.google.com/d/forum/comp.lang.asm.x86
flat assembler: Message board for the users of flat assembler. http://board.flatassembler.net/
x86 Assembly Language FAQ Supporting the alt.lang.asm and comp.lang.asm.x86 Newsgroups http://www.fysnet.net/faq/
/r/asm - where every byte counts https://www.reddit.com/r/asm
##asm
, Freenode IRC network
http://goo.gl/vZ4xwd
CS270 x86 Assembly Blog http://cs270assembly.tumblr.com/
- In-Depth: C/C++ Low Level Curriculum
- (defunct) http://www.altdevblogaday.com/author/alex-darby/
- original location down; various mirrors available (follow the links to the previous parts):
- https://web.archive.org/web/20130810050325/http://www.altdevblogaday.com/author/alex-darby/
- https://www.gamasutra.com/search/?search_text=Alex+Darby
- http://jahej.com/alt/2013_05_22_cc-low-level-curriculum-part-12-multiple-inheritance.html
- Understanding Windows x64 Assembly
NASM Assembly Language Tutorials - asmtutor.com
http://asmtutor.com/
Introductory Intel x86: Architecture, Assembly, Applications, & Alliteration
http://opensecuritytraining.info/IntroX86.html
YouTube: https://www.youtube.com/playlist?list=PL038BE01D3BAEFDB0
Intermediate Intel x86: Architecture, Assembly, Applications, & Alliteration
http://opensecuritytraining.info/IntermediateX86.html
YouTube: https://www.youtube.com/playlist?list=PL8F8D45D6C1FFD177
Introduction To Reverse Engineering Software
http://opensecuritytraining.info/IntroductionToReverseEngineering.html
YouTube: https://www.youtube.com/playlist?list=PL416CEDF4A931DB0D
Learning assembly for linux-x64 https://github.com/0xAX/asm https://0xax.github.io/categories/assembly/
Assembly Language (x86) Resources http://grail.cba.csuohio.edu/~somos/asmx86.html
Useful assembly links http://www.agner.org/optimize/#links
- Precise Event Sampling on AMD vs Intel: Quantitative and Qualitative Comparison
- IEEE Transactions on Parallel and Distributed Systems 2023
- Muhammad Aditya Sasongko, Milind Chabbi, Paul H J Kelly, Didem Unat
- https://ieeexplore.ieee.org/document/10068807
Agner Fog: Software optimization resources
http://www.agner.org/optimize/
- Optimizing software in C++: An optimization guide for Windows, Linux and Mac platforms
http://www.agner.org/optimize/optimizing_cpp.pdf - Optimizing subroutines in assembly language: An optimization guide for x86 platforms
http://www.agner.org/optimize/optimizing_assembly.pdf - The microarchitecture of Intel, AMD and VIA CPUs: An optimization guide for assembly programmers and compiler makers
http://www.agner.org/optimize/microarchitecture.pdf - Instruction tables: Lists of instruction latencies, throughputs and micro-operation breakdowns for Intel, AMD and VIA CPUs
http://www.agner.org/optimize/instruction_tables.pdf - Calling conventions for different C++ compilers and operating systems
http://www.agner.org/optimize/calling_conventions.pdf
AMD64 Application Binary Interface (ABI)
http://www.x86-64.org/documentation.html
http://www.x86-64.org/documentation_folder/abi.pdf
Assembly Optimization Tips http://mark.masmcode.com/
Assembler x86 (FPU, MMX, SSE, SSE2, SSE3, SSSE3, SSE4, AVX, AVX2, AVX512)
http://wm.ite.pl/articles/#assembler-x86-fpu-mmx-sse-sse2-sse3-ssse3-sse4-avx-avx2-avx512-new
Brennan's Guide to Inline Assembly
http://www.delorie.com/djgpp/doc/brennan/brennan_att_inline_djgpp.html
AT&T/UNIX syntax <-> Intel syntax
Chess Programming Wiki - Hardware: x86-64
https://chessprogramming.wikispaces.com/x86-64
CPU: Intel® 64 and IA-32 Architectures Software Developer Manuals
https://www-ssl.intel.com/content/www/us/en/processors/architectures-software-developer-manuals.html
CPU: Developer Guides, Manuals & ISA Documents
http://developer.amd.com/resources/documentation-articles/developer-guides-manuals/
GCC-Inline-Assembly-HOWTO
http://www.ibiblio.org/gferg/ldp/GCC-Inline-Assembly-HOWTO.html
Instruction latencies and throughput for AMD and Intel x86 processors
https://gmplib.org/~tege/x86-timing.pdf
Inline assembly for x86 in Linux
http://www.ibm.com/developerworks/linux/library/l-ia/
Inline assembly (linux-insides)
https://0xax.gitbooks.io/linux-insides/content/Theory/asm.html
Intel Intrinsics Guide
https://www.intel.com/content/www/us/en/docs/intrinsics-guide/
Linux Assembly HOWTO
http://asm.sourceforge.net/howto.html
OS Development Wiki
http://wiki.osdev.org/
sandpile.org -- "The world's leading source for technical x86 processor information"
http://www.sandpile.org/
Stack Overflow: 'x86' tag wiki
https://stackoverflow.com/tags/x86/info
Stack Overflow: Documentation - Intel x86 Assembly Language & Microarchitecture
http://stackoverflow.com/documentation/x86/topics
The Minimal 80x86 Instruction Set
http://www.plantation-productions.com/Webster/www.writegreatcode.com/Vol2/wgc2_OA.pdf
Appendix A of Write Great Code, Volume 2: https://www.nostarch.com/greatcode2.htm
The Netwide Assembler: NASM
Chapter 11: Writing 64-bit Code (Unix, Win64)
http://www.nasm.us/xdoc/2.11.09rc1/html/nasmdo11.html
Links to the latest versions: http://www.nasm.us/docs.php
Wikipedia: x86 assembly topics
https://en.wikipedia.org/wiki/Template:X86_assembly_topics
x86 Encoding Cheat Sheet
https://www.akkadia.org/drepper/x86-opcode-structure.pdf
x86 Instruction Set Reference
http://felixcloutier.com/x86/
https://github.com/zneak/x86doc
x86 intrinsics cheat sheet
A cheat sheet containing most x86 intrinsics, like SSE and AVX intrinsics, grouped in an intuitive fashion
http://www3.in.tum.de/~finis/
http://www3.in.tum.de/~finis/x86-intrin-cheatsheet-v2.2.pdf
x86, x64 Instruction Latency, Memory Latency and CPUID dumps
http://users.atw.hu/instlatx64/
x86_64 NASM Assembly Quick Reference ("Cheat Sheet")
https://www.cs.uaf.edu/2010/fall/cs301/support/x86_64/index.html
X86-64 Instruction Encoding
http://wiki.osdev.org/X86-64_Instruction_Encoding
X86 Opcode and Instruction Reference
http://ref.x86asm.net/
x86 Opcode Structure and Instruction Overview
http://net.cs.uni-bonn.de/fileadmin/user_upload/plohmann/x86_opcode_structure_and_instruction_overview.pdf
x86 oddities
http://x86.corkami.com
x86-cpuid.org: A machine-readable CPUID data repository and code generator
https://x86-cpuid.org/
https://gitlab.com/x86-cpuid.org/x86-cpuid-db
- The x86-64 processor (aka amd64, x64): Whirlwind tour
- Assembly: The mother of all languages - https://speakerdeck.com/takipiadmin/assembly-the-mother-of-all-languages
- Creating a language using only assembly language
- Intro to x64 Reversing - Jon Larimer - SummerCon 2011
- x86 Assembly Primer for C Programmers
- Compiler Explorer: an interactive compiler
- Intel XED: The X86 Encoder Decoder
- M/o/Vfuscator - the single instruction C compiler - https://github.com/xoreaxeaxeax/movfuscator
- Radare2
- Radare project started as a forensics tool, a scriptable commandline hexadecimal editor able to open disk files, but later support for analyzing binaries, disassembling code, debugging programs, attaching to remote gdb servers, etc.
- http://rada.re/
- https://github.com/radare/radare2
- Remill: Machine code to LLVM binary translator
- Remill is a static binary translator that translates machine code into LLVM bitcode. It translates x86 and amd64 machine code (including AVX and AVX512) into LLVM bitcode.
- https://github.com/trailofbits/remill
- Run Nasm x86/x64 Assembly Code Online - https://dbgr.cc/l/nasm
- SASM: Simple crossplatform IDE for NASM, MASM, GAS, FASM assembly languages - https://dman95.github.io/SASM/english.html
- STOKE - a stochastic optimizer for x86_64 assembly
- Talks:
- STOKE: Search-Based Compiler Optimization - Alex Aiken (2016) - https://www.youtube.com/watch?v=rZFeTTFp7x4
- Stochastic Optimization for x86 Binaries - Eric Schkufza (2015) - https://www.youtube.com/watch?v=aD9mZDJzb58
- Talks:
Assemblers - https://en.wikipedia.org/wiki/Comparison_of_assemblers#x86_assemblers
- FASM (flat assembler) - http://flatassembler.net/
- GNU Assembler (as) - https://sourceware.org/binutils/docs/as/
- Keystone assembler framework
- Core (Arm, Arm64, Hexagon, Mips, PowerPC, Sparc, SystemZ & X86) + bindings
- http://www.keystone-engine.org
- https://github.com/keystone-engine/keystone
- NASM (The Netwide Assembler) - http://www.nasm.us/
- Yasm
- Capstone disassembly/disassembler framework
- Core (Arm, Arm64, Mips, PPC, Sparc, SystemZ, X86, X86_64, XCore) + bindings (Python, Java, Ocaml)
- http://www.capstone-engine.org/
- https://github.com/aquynh/capstone
- disasm: Interactive Disassembler GUI
- Optional Intel Architecture Code Analyzer (IACA) integration
- https://github.com/mongodb-labs/disasm
- diStorm3 binary stream disassembler library project
- Disassembler Library For x86/AMD64: "diStorm3 is really a decomposer, which means it takes an instruction and returns a binary structure which describes it rather than static text, which is great for advanced binary code analysis."
- https://github.com/gdabah/distorm
- https://github.com/gdabah/distorm/wiki
- EmilPRO
- EmilPRO is a graphical disassembler for a large number of instruction sets. It's a reimplementation and replacement for the Dissy disassembler.
- http://www.emilpro.com/
- https://github.com/SimonKagstrom/emilpro
- Medusa: An open source interactive disassembler
- Panopticon - A Libre Cross Platform Disassembler
- Plasma is an interactive disassembler for x86/ARM/MIPS. It can generates indented pseudo-code with colored syntax.
- https://github.com/plasma-disassembler/plasma
- Interactive disassembler for x86/ARM/MIPS. Generates indented pseudo-code with colored syntax code.
- Udis86: Disassembler Library for x86 and x86-64
- Zyan Disassembler Engine (Zydis)
- Fast and lightweight x86/x86-64 disassembler library.
- https://github.com/zyantific/zyan-disassembler-engine
- asmttpd: Web server for Linux written in amd64 assembly.
- HeavyThing x86_64 assembly language library and showcase programs
- rwasa web server (bundled with the HeavyThing library): https://2ton.com.au/rwasa/
- https://2ton.com.au/HeavyThing/
- SERVASM: Your other webserver
- Literate webserver in assembler.
- https://zarkzork.com/servasm.html
- https://github.com/zarkzork/servasm
- Bluff your way in x64 assembler
- ACCU 2017; Roger Orr
- https://www.youtube.com/watch?v=RI7VL-g6J7g
- Deeper Dive: x86 32/64 Assembly
- University of Cincinnati Malware Analysis Class (CS7038): Wk06 (2017)
- https://www.youtube.com/watch?v=JiC0TnYtXXU
- http://class.malware.re/2017/02/14/asm-crash-course-2.html
- Enough x86 Assembly to Be Dangerous
- CppCon 2017; Charles Bailey
- https://www.youtube.com/watch?v=IfUPkUAEwrk
- Intro to x86 Assembly Language - Davy Wybiral
- Introduction to x86 Assembly
- Derbycon 2018; DazzleCatDuo (Christopher Domas & Stephanie Domas)
- https://www.youtube.com/watch?v=Ea6yt3SP3y4
- http://www.irongeek.com/i.php?page=videos/derbycon8/mainlist
- Intro to Reverse Engineering and Debugging with Radare2
- Just enough Assembly for Compiler Explorer
- Anders Schau Knatten
- CppCon 2021: https://www.youtube.com/watch?v=QLolzolunJ4
- NDC TechTown 2019: https://www.youtube.com/watch?v=soeFwz0cOqU
- Linux x64 Assembly
- Modern x64 Assembly
- Practical x64 Assembly and C++ Tutorials
- x64 Assembly Multithreading
- x86_64 Linux Assembly
- x86-64 Lite for Compiler Writers
- Top 10 Craziest Assembly Language Instructions
- 2021; Chris Rose
- https://www.youtube.com/watch?v=Wz_xJPN7lAY
- x86 register-to-register move instructions & short history of the most popular CPU architecture
- Decoding x86 instructions with help of octal digits
- 2018; Tomasz Grysztar
- https://www.youtube.com/watch?v=hN7mJ4nXC7M
- Hardware Backdoors in x86 CPUs
- Black Hat 2018; Christopher Domas
- https://www.youtube.com/watch?v=_eSAF_qT_FY
- https://github.com/xoreaxeaxeax/rosenbridge
- Increase in complexity of x86 instruction codes (REX, VEX, EVEX)
- 2018; Tomasz Grysztar
- https://www.youtube.com/watch?v=6IuILMoPpDU
- Inside the AMD Microcode ROM
- Assembly Language is Too High Level
- DEF CON 25; XlogicX
- https://www.youtube.com/watch?v=eunYrrcxXfw
- https://media.defcon.org/DEF%20CON%2025/DEF%20CON%2025%20presentations/DEFCON-25-XlogicX-Assembly-Language-Is-Too-High-Level.pdf
- Interactive Redundant Assembler (shell)
- Breaking the x86 Instruction Set
- Christopher Domas
- sandsifter
- https://github.com/xoreaxeaxeax/sandsifter
- sandsifter-tests: A repository of result for runs of sandsifter on various x86 CPU's
- Black Hat 2017
- DEF CON 25
- Compiling C to printable x86, to make an executable research paper
- Everything you want to know about x86 microcode, but might have been afraid to ask
- 34C3 (2017); Benjamin Kollenda and Philipp Koppe
- An introduction into reverse-engineering x86 microcode and writing it yourself
- https://media.ccc.de/v/34c3-9058-everything_you_want_to_know_about_x86_microcode_but_might_have_been_afraid_to_ask
- https://events.ccc.de/congress/2017/Fahrplan/events/9058.html
- POP POP RETN ; An Introduction to Writing Win32 Shellcode
- Derbycon 2017; Christopher Maddalena
- http://www.irongeek.com/i.php?page=videos/derbycon7/t313-pop-pop-retn-an-introduction-to-writing-win32-shellcode-christopher-maddalena
- reductio [ad absurdum]
- Shakacon 2017; Christopher Domas
- https://www.slideshare.net/Shakacon/reductio-ad-absurdum-78575394
- https://www.youtube.com/watch?v=NmWwRmvjAE8
- An exploration of code homeomorphism: all programs can be reduced to the same instruction stream.
- Reverse Engineering x86 Processor Microcode
- USENIX Security '17
- Philipp Koppe, Benjamin Kollenda, Marc Fyrbiak, Christian Kison, Robert Gawlik, Christof Paar, and Thorsten Holz
- https://www.usenix.org/conference/usenixsecurity17/technical-sessions/presentation/koppe
- https://www.youtube.com/watch?v=I6dQfnb3y0I
- https://github.com/RUB-SysSec/Microcode
- Slides: https://www.usenix.org/sites/default/files/conference/protected-files/usenixsecurity17_slides_koppe.pdf
- PDF: https://www.usenix.org/system/files/conference/usenixsecurity17/sec17-koppe.pdf
- European Coreboot Conference (ECC) 2017 - https://www.youtube.com/watch?v=6-NFcC8yOXo
- An In-Depth Analysis of Disassembly on Full-Scale x86/x64 Binaries
- Causes of Performance Instability due to Code Placement in X86
- 2016 LLVM Developers’ Meeting; Zia Ansari
- https://www.youtube.com/watch?v=IX16gcX4vDQ
- http://llvm.org/devmtg/2016-11/Slides/Ansari-Code-Alignment.pdf
- Debugging Optimized x64 Code
- 2016; Jorge L. Rodríguez
- https://www.youtube.com/watch?v=MUNRvqpske0
- Improving LLVM Generated Code Size for X86 Processors
- 2016 EuroLLVM Developers' Meeting; Zia Ansari & David Kreitzer
- https://www.youtube.com/watch?v=yHexQSFud3w
- http://llvm.org/devmtg/2016-03/Presentations/X86CodeSizePDF.pdf
- Movfuscator Be Gone
- REcon 2016
- Julian Kirsch, Clemens Jonischkeit
- https://www.youtube.com/watch?v=d_R8i0dVBsQ
- https://github.com/kirschju/demovfuscator
- https://recon.cx/2016/talks/%22Movfuscator-Be-Gone.html
- https://infocon.org/cons/REcon/REcon%202016/video/recon2016-20-julian-kirsch-clemens-jonischkeit-Movfuscator-Be-Gone.mp4
- Programming an x64 compiler from scratch
- 2016; Per Vognsen
- part 1 - https://www.youtube.com/watch?v=N9B2KeAWXgE
- part 2 - https://www.youtube.com/watch?v=Mx29YQ4zAuM
- part 3 - https://www.youtube.com/watch?v=olSZ0d-nksE
- Repsych: Psychological Warfare in Reverse Engineering
- DEF CON 23 (2015); Chris Domas
- https://www.youtube.com/watch?v=HlUe0TUHOIc
- https://github.com/xoreaxeaxeax/REpsych
- The Memory Sinkhole - Unleashing An X86 Design Flaw Allowing Universal Privilege Escalation
- Black Hat 2015
- https://www.youtube.com/watch?v=lR0nh-TdpVg
- The M/o/Vfuscator - Turning 'mov' into a soul-crushing RE nightmare
- When hardware must „just work“ - An inside look at x86 CPU design
- 32C3 (2015)
- https://www.youtube.com/watch?v=e2vPp0fQUkM
- https://media.ccc.de/v/32c3-7171-when_hardware_must_just_work
- Slides: https://events.ccc.de/congress/2015/Fahrplan/system/event_attachments/attachments/000/002/801/original/When_HW_must_just_work_--_FINAL.pdf
- https://lab.dsst.io/32c3-slides/7171.html
- x86 instruction encoding and the nasty hacks we do in the kernel
- SUSE Labs Conference 2014; Borislav Petkov
- https://www.youtube.com/watch?v=CUAXCeRjw3c
- Slides: http://www.slideshare.net/ennael/kr2014-x86instructions
- x86 Internals for Fun and Profit
- Beyond MOV ADD XOR -- the unusual and unexpected in x86
- 2013; Gynvael Coldwind, Mateusz "j00ru" Jurczyk
- https://www.youtube.com/watch?v=WufyCW3j3DE
- Page Fault Liberation Army or Gained in Translation: a history of creative x86 virtual memory uses
- 2013 - #HITB2013AMS D1T1; Sergey Bratus, Julian Bangert
- https://www.youtube.com/watch?v=vqj3xCATeqQ
- http://conference.hitb.org/hitbsecconf2013ams/materials/D1T1%20-%20Sergey%20Bratus%20and%20Julian%20Bangert%20-%20Better%20Security%20Through%20Creative%20x86%20Trapping.pdf
- The Page-Fault Weird Machine: Lessons in Instruction-less Computation
- USENIX Workshop on Offensive Technologies (WOOT) 2013
- Julian Bangert, Sergey Bratus, Rebecca Shapiro, Sean W. Smith, Dartmouth College
- https://www.youtube.com/watch?v=YFGwZA_4URg
- Page Fault Liberation Army or Gained in Translation a history of creative x86 virtual memory uses
- Such a weird processor - messing with x86 opcodes (and a little bit of PE...)