Unicorn Engine
FEX
Our great sponsors
Unicorn Engine | FEX | |
---|---|---|
14 | 43 | |
7,141 | 1,823 | |
1.9% | 5.9% | |
1.3 | 9.9 | |
about 21 hours ago | about 15 hours ago | |
C | C++ | |
GNU General Public License v3.0 only | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Unicorn Engine
- Unicorn: Lightweight multi-platform, multi-architecture CPU emulator framework
- 86Box v4.0
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Show HN: Tetris, but the blocks are ARM instructions that execute in the browser
OFRAK Tetris is a project I started at work about two weeks ago. It's a web-based game that works on desktop and mobile. I made it for my company to bring to events like DEF CON, and to promote our binary analysis and patching framework called OFRAK.
In the game, 32-bit, little-endian ARM assembly instructions fall, and you can modify the operands before executing them on a CPU emulator. There are two segments mapped – one for instructions, and one for data (though both have read, write, and execute permissions). Your score is a four byte signed integer stored at the virtual address pointed to by the R12 register, and the goal is to use the instructions that fall to make the score value in memory as high as possible. When it's game over, you can download your game as an ELF to relive the glory in GDB on your favorite ARM device.
The CPU emulator is a version of Unicorn (https://www.unicorn-engine.org/) that has been cross-compiled to WebAssembly (https://alexaltea.github.io/unicorn.js/), so everything on the page runs in the browser without the need for any complicated infrastructure on the back end.
Since I've only been working on this for a short period of time leading up to its debut at DEF CON, there are still many more features I'd eventually like to implement. These include adding support for other ISAs besides ARM, adding an instruction reference manual, and lots of little cleanups, bug fixes, and adjustments.
My highest score is 509,644,979, but my average is about 131,378.
I look forward to feedback, bug reports, feature requests, and strategy discussions!
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It Takes 6 Days to Change 1 Line of Code
Entails hundreds of hours of single-stepping through that opcode in Linux kernel using an indirect operand pointing toward its own opcode (self-modifying code).
Even the extraordinaire Fabrice Bellard (author of QEMU) admitted that it is broke and did a total rewrite, which fixed tons of other issues.
https://github.com/unicorn-engine/unicorn/issues/364
- FOSS Simulator for debugging C code (even better if it supports some MCUs)
- Unicorn: Lightweight multi-platform, multi-architecture CPU emulation framework
- Unicorn - CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc, PowerPC, RiscV, S390x, TriCore, X86)
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Vita3K android running Tales of Hearts R - A Glimpse of What's to come
Macdu (Vita3K dev) also stated that this game is CPU bound so they used a CPU emulator known as unicorn2 , this is also the reason for the slow speed
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QEMU Version 7.0.0 Released
This is how I found out a snippet of assembly code that can actually distinguished between a KVM hypervisor and most of today’s emulator.
https://github.com/unicorn-engine/unicorn/issues/364
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Top Python Tools for Malware Analysis. – PythonStacks
Unicorn is missing from that list.
The python CPU emulator with full program counter (PC) and general (and other CPU-specific) register set controls.
I use it to catch fileless malware in the second fastest dynamic manner. Also good for detecting Rowhammer/SPECTRE behaviors.
Disclaimer: one of the contributors and a contractor that frequently deploy this.
https://github.com/unicorn-engine/unicorn
FEX
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FEX 2305 Tagged!
"A fast usermode x86 and x86-64 emulator for Arm64"
- Sekiro: Shadows Die Twice On Android using Fex-Emu Turnip DXVK
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Genshin, compatibility, ARM processors, surface pro x, mac M1
Could try this https://github.com/FEX-Emu/FEX + wine/proton. But as always keep in mind that playing on non-supported platforms can lead to bans in future (never happened but who knows).
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Asahi Linux M1 GPU drivers can now run Windows games via Steam Proton
It's explained in the video, it uses https://github.com/FEX-Emu/FEX
- Asahi Linux got 24 games from steam running on M1 Mac mini.
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Apple holds press event showing off its ‘latest advances in gaming’
Steam is also funding an x86 tn ARM game emulator, which opens up the potential for it working on Android.
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Android tablets and Chromebooks are on another crash course – will it be different this time?
Valve is funding developers working on an x86-to-ARM layer, FEX. I'm assuming that the eventual end goal would be to run Steam on Android, one of the FEX developers was commenting on trying to get FEX to work on an S8 Tab Ultra.
- How to install Steam.
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How the f*** does Proton works so amazingly well?
Valve is also funding another translation layer, from x86 to ARM (see FEX).
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Apple GPU drivers now in Asahi Linux
Additionally, game emulation won't be optimal until someone fixes this issue from FEX-Emu, which will allow that emulator to run on Apple Silicon. QEMU-user is currently your best option though it is dead slow. Box64 is currently pretty capable, however, it will not be able to run any 32-bit libraries (which even modern games ship a few of).
What are some alternatives?
QEMU - Official QEMU mirror. Please see https://www.qemu.org/contribute/ for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website.
box86 - Box86 - Linux Userspace x86 Emulator with a twist, targeted at ARM Linux devices
MicroPython - MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems
box64 - Box64 - Linux Userspace x86_64 Emulator with a twist, targeted at ARM64 Linux devices
capstone - Capstone disassembly/disassembler framework: Core (Arm, Arm64, BPF, EVM, M68K, M680X, MOS65xx, Mips, PPC, RISCV, Sparc, SystemZ, TMS320C64x, Web Assembly, X86, X86_64, XCore) + bindings. [Moved to: https://github.com/capstone-engine/capstone]
asahi-installer - Asahi Linux installer
Reverse-Engineering-Tutorial - A FREE comprehensive reverse engineering tutorial covering x86, x64, 32-bit ARM & 64-bit ARM architectures.
hangover - Hangover runs simple Win32 applications on arm64 Linux
TinyVM - TinyVM is a small, fast, lightweight virtual machine written in pure ANSI C.
docs - Hardware and software docs / wiki
kernel_emulator