See the Releases page for downloads. The current git master branch is 5.7.7, next will be 5.7.8.

• Since r2-5.6.0 all the patch releases are abi stable
• Odd patch versions are used in git builds only, releases use even numbers
• No need to recompile the plugins, bindings or tools if the major and minor version are the same

r2 is a complete rewrite of radare. It provides a set of libraries, tools and plugins to ease reverse engineering tasks. Distributed mostly under LGPLv3, each plugin can have different licenses (see r2 -L, rasm2 -L, ...).

The radare project started as a simple command-line hexadecimal editor focused on forensics. Today, r2 is a featureful low-level command-line tool with support for scripting. r2 can edit files on local hard drives, view kernel memory, and debug programs locally or via a remote gdb server. r2's wide architecture support allows you to analyze, emulate, debug, modify, and disassemble any binary.

• r2 can be installed from git or via pip using r2env.
• Run sys/install.sh for the default acr+make+symlink installation
• meson/ninja (muon/samu also works) and make builds are supported.
• Windows builds require meson and msvc or mingw as compilers
• To uninstall the current build of r2 run make uninstall
• To uninstall ALL the system installations of r2 do: sudo make purge

git clone https://github.com/radareorg/radare2
radare2/sys/install.sh

Default Windows builds use MSVC, so run those .bat:

preconfigure.bat       REM setup python, meson, ninja
configure.bat          REM run meson b + vs project
make.bat               REM run ninja -C b
prefix\bin\radare2.exe

Alternatively you can use r2env to switch between different versions.

pip install -U r2env
r2env init
r2env add radare2@git

These are the first steps to use r2, read the book or find tutorials for more details

$ r2 /bin/ls   # open the binary in read-only mode
> aaa          # same as r2 -A, analyse the binary
> afl          # list all functions (try aflt, aflm)
> px 32        # print 32 byte hexdump current block
> s sym.main   # seek to the given offset (by flag name, number, ..)
> f~foo        # filter flags with ~grep (same as |grep)
> iS;is        # list sections and symbols (same as rabin2 -Ss)
> pdf; agf     # print function and show control-flow-graph in ascii-art
> oo+;w hello  # reopen in rw mode and write a string in the current offset
> ?*~...       # interactive filter all command help messages
> q            # quit

• Official radare2 book: Read about r2 usage
• COMMUNITY.md: Community engagement and loose guidelines
• CONTRIBUTING.md: Information about reporting issues and contributing. See also Contributing
• DEVELOPERS.md: Development guidelines for r2
• SECURITY.md: Instructions for reporting vulnerabilities
• USAGE.md: Some example commands
• INSTALL.md: Installation instructions using make or meson

Many plugins are included in r2 by default. But you can extend its capabilities by using the r2pm package manager.

r2pm -s <word> # search package by word
r2pm -ci <pkg> # install a package

Most popular packages are:

• esilsolve: The symbolic execution plugin, based on esil and z3
• iaito: The official Qt graphical interface
• radius2: A fast symbolic execution engine based on boolector and esil
• r2dec: A decompiler based on r2 written in JS, accessed with the pdd command
• r2ghidra: The native ghidra decompiler plugin, accessed with the pdg command
• r2frida: The frida io plugin. Start r2 with r2 frida://0 to use it

There are many ways to contribute to the project. Contact the community, check out the github issues, or grep for TODO/FIXME/XXX comments in the source.

To contribute code, push your changes to a branch on your fork of the repository. Please ensure that you follow the coding and style guidelines and that your changes pass the testing suite, which you can run with the r2r tool. If you are adding significant code, it may be necessary to modify or add additional tests in the test/ directory.

For more details, see CONTRIBUTING.md and DEVELOPERS.md.

To learn more about r2 we encourage you to watch youtube talks from r2con. In addition to reading blogposts, slides or the official radare2 book, here are some methods to contact us:

• irc.libera.chat: #radare, #radare_side
• Matrix: #radare:matrix.org
• Telegram: Main Channel and Side Channel
• Discord server
• Twitter: @radareorg
• Website: https://www.radare.org/

Windows (since XP), Linux, Darwin, GNU/Hurd, Apple's {Mac,i,iPad,watch}OS, Android, [Dragonfly, Net, Free, Open] BSD, Z/OS, QNX, SerenityOS, Solaris, Haiku, Vinix, FirefoxOS.

i386, x86-64, ARM, BPF, MIPS, PowerPC, SPARC, RISC-V, SH, m68k, m680x, AVR, XAP, S390, XCore, CR16, HPPA, ARC, Blackfin, Z80, H8/300, V810, V850, CRIS, XAP, PIC, LM32, 8051, 6502, i4004, i8080, Propeller, EVM, Tricore, CHIP-8, LH5801, T8200, GameBoy, SNES, SPC700, MSP430, Xtensa, NIOS II, Java, Dalvik, WebAssembly, MSIL, EBC, TMS320 (c54x, c55x, c55+, c64x), Hexagon, Brainfuck, Malbolge, whitespace, DCPU16, LANAI, MCORE, mcs96, RSP, SuperH-4, VAX, KVX, Am29000, LOONGARCH, JDH8.

ELF, Mach-O, Fatmach-O, PE, PE+, MZ, COFF, OMF, TE, XBE, BIOS/UEFI, Dyldcache, DEX, ART, CGC, Java class, Android boot image, Plan9 executable, ZIMG, MBN/SBL bootloader, ELF coredump, MDMP (Windows minidump), WASM (WebAssembly binary), Commodore VICE emulator, QNX, WAD, OFF, TIC-80 Game Boy (Advance), Nintendo DS ROMs and Nintendo 3DS FIRMs, various filesystems.