capstone-engine/capstone

Capstone disassembly/disassembler framework for ARM, ARM64 (ARMv8), Alpha, BPF, Ethereum VM, HPPA, LoongArch, M68K, M680X, Mips, MOS65XX, PPC, RISC-V(rv32G/rv64G), SH, Sparc, SystemZ, TMS320C64X, TriCore, Webassembly, XCore and X86.

9,008

stars

5,297

commits

C

primary language

Sep 10, 2026

updated

www.capstone-engine.org
arm
arm64
bpf
disassembler
ethereum
framework
m0s65xx
m680x
m68k
mips
powerpc
reverse-engineering
riscv
security
sparc
systemz
tms320c64x
webassembly
x86
x86-64

README

Capstone Engine

Build status pypi package pypi downloads oss-fuzz Status

[!TIP] Welcome to join our community group!  

Capstone is a disassembly framework with the target of becoming the ultimate disasm engine for binary analysis and reversing in the security community.

Created by Nguyen Anh Quynh, then developed and maintained by a small community, Capstone offers some unparalleled features:

  • Support multiple hardware architectures: ARM, AArch64, Alpha, ARC, BPF, Ethereum VM, LoongArch, HP PA-RISC (HPPA), M68K, M680X, Mips, MOS65XX, PPC, RISC-V(rv32G/rv64G), SH, Sparc, SystemZ, TMS320C64X, TriCore, Webassembly, XCore and X86 (16, 32, 64), Xtensa.

  • Having clean/simple/lightweight/intuitive architecture-neutral API.

  • Provide details on disassembled instruction (called “decomposer” by others).

  • Provide semantics of the disassembled instruction, such as list of implicit registers read & written.

  • Implemented in pure C language, with lightweight bindings for Swift, D, Clojure, F#, Common Lisp, Visual Basic, PHP, PowerShell, Emacs, Haskell, Perl, Python, Ruby, C#, NodeJS, Java, GO, C++, OCaml, Lua, Rust, Delphi, Free Pascal & Vala ready either in main code, or provided externally by the community).

  • Native support for all popular platforms: Windows, Mac OSX, iOS, Android, Linux, *BSD, Solaris, etc.

  • Thread-safe by design.

  • Special support for embedding into firmware or OS kernel.

  • High performance & suitable for malware analysis (capable of handling various X86 malware tricks).

  • Distributed under the open source BSD license.

Further information is available at https://www.capstone-engine.org

Compile

See BUILDING.md file for how to compile and install Capstone.

Documentation

Contributing

See CONTRIBUTING.md for an intro.

Fuzz

See suite/fuzz/README.md for more information.

License

This project is released under the BSD license. If you redistribute the binary or source code of Capstone, please attach file LICENSE.TXT with your products.

Contributors

(top 30 of 314)

aquynh

3,137 commits

kabeor

226 commits

Rot127

221 commits

b1llow

174 commits

capstone-engine/capstone

Capstone disassembly/disassembler framework for ARM, ARM64 (ARMv8), Alpha, BPF, Ethereum VM, HPPA, LoongArch, M68K, M680X, Mips, MOS65XX, PPC, RISC-V(rv32G/rv64G), SH, Sparc, SystemZ, TMS320C64X, TriCore, Webassembly, XCore and X86.

9,008

stars

5,297

commits

C

primary language

Sep 10, 2026

updated

www.capstone-engine.org
arm
arm64
bpf
disassembler
ethereum
framework
m0s65xx
m680x
m68k
mips
powerpc
reverse-engineering
riscv
security
sparc
systemz
tms320c64x
webassembly
x86
x86-64

README

Capstone Engine

Build status pypi package pypi downloads oss-fuzz Status

[!TIP] Welcome to join our community group!  

Capstone is a disassembly framework with the target of becoming the ultimate disasm engine for binary analysis and reversing in the security community.

Created by Nguyen Anh Quynh, then developed and maintained by a small community, Capstone offers some unparalleled features:

  • Support multiple hardware architectures: ARM, AArch64, Alpha, ARC, BPF, Ethereum VM, LoongArch, HP PA-RISC (HPPA), M68K, M680X, Mips, MOS65XX, PPC, RISC-V(rv32G/rv64G), SH, Sparc, SystemZ, TMS320C64X, TriCore, Webassembly, XCore and X86 (16, 32, 64), Xtensa.

  • Having clean/simple/lightweight/intuitive architecture-neutral API.

  • Provide details on disassembled instruction (called “decomposer” by others).

  • Provide semantics of the disassembled instruction, such as list of implicit registers read & written.

  • Implemented in pure C language, with lightweight bindings for Swift, D, Clojure, F#, Common Lisp, Visual Basic, PHP, PowerShell, Emacs, Haskell, Perl, Python, Ruby, C#, NodeJS, Java, GO, C++, OCaml, Lua, Rust, Delphi, Free Pascal & Vala ready either in main code, or provided externally by the community).

  • Native support for all popular platforms: Windows, Mac OSX, iOS, Android, Linux, *BSD, Solaris, etc.

  • Thread-safe by design.

  • Special support for embedding into firmware or OS kernel.

  • High performance & suitable for malware analysis (capable of handling various X86 malware tricks).

  • Distributed under the open source BSD license.

Further information is available at https://www.capstone-engine.org

Compile

See BUILDING.md file for how to compile and install Capstone.

Documentation

Contributing

See CONTRIBUTING.md for an intro.

Fuzz

See suite/fuzz/README.md for more information.

License

This project is released under the BSD license. If you redistribute the binary or source code of Capstone, please attach file LICENSE.TXT with your products.

Contributors

(top 30 of 314)

aquynh

3,137 commits

kabeor

226 commits

Rot127

221 commits

b1llow

174 commits

Languages

C

91.2%

C#

2.3%

Smalltalk

1.8%

Python

1.8%

Java

1.5%