Capstone vs Unicorn Engine
GitHub Stats
About Capstone
Capstone is a lightweight, multi-platform, multi-architecture disassembly framework. It provides a clean, simple API to disassemble binary code into human-readable assembly for x86 (16/32/64-bit), ARM, ARM64, MIPS, PowerPC, SPARC, SystemZ, XCore, M68K, TMS320C64x, M680x, and EVM architectures. Capstone is the disassembly engine embedded in many major security tools including Ghidra, radare2/rizin, Cutter, Binary Ninja, and dozens of others. Its design emphasizes thread safety, zero external dependencies, and rich detail extraction - each disassembled instruction includes operand details, register access information, and instruction groups. Bindings are available for Python, Java, Go, Ruby, Rust, OCaml, and many other languages, making it the standard building block for custom disassembly and binary analysis tools.
About Unicorn Engine
Unicorn is a lightweight, multi-platform, multi-architecture CPU emulator framework based on QEMU. It provides a clean API for emulating machine code across x86 (16/32/64-bit), ARM, ARM64, MIPS, SPARC, and M68K architectures. Unlike full system emulators, Unicorn focuses purely on CPU instruction emulation - no OS, no hardware peripherals - which makes it fast and embeddable. Security researchers use Unicorn to emulate specific code snippets (like unpacking routines, decryption functions, or shellcode) without executing them on real hardware, making it invaluable for malware analysis, fuzzing, and binary instrumentation. Unicorn provides hooks for memory access, code execution, and interrupts, allowing fine-grained observation and control of emulated code. Bindings exist for Python, Java, Go, Rust, Ruby, and many other languages.
Platform Support
Tags
Shared
Capstone only
Unicorn Engine only