91 Rz-asm
rz-asm is an inline assembler/disassembler. Its main function is to get bytes corresponding to given machine instruction opcode.
$ rz-asm -h
Usage: rz-asm [-ACdDehLBvw] [-a arch] [-b bits] [-m plugin] [-o addr] [-s syntax]
[-f file] [-F fil:ter] [-i skip] [-l len] 'code'|hex|-
-a arch Set architecture to assemble/disassemble (see -L)
-A Show Analysis information from given hexpairs
-b bits Set cpu register size (8, 16, 32, 64) (RZ_ASM_BITS)
-B Binary input/output (-l is mandatory for binary input)
-c cpu Select specific CPU (depends on arch)
-C Output in C format
-d, -D Disassemble from hexpair bytes (-D show hexpairs)
-e Use big endian instead of little endian
-I Display lifted RzIL code (same input as in -d, IL is also validated)
-E Display ESIL expression (same input as in -d)
-f file Read data from file
-F in:out Specify input and/or output filters (att2intel, x86.pseudo, ...)
-h, -hh Show this help, -hh for long
-i len Ignore N bytes of the input buffer
-j Output in JSON format
-k kernel Select operating system (linux, windows, darwin, ..)
-l len Input/Output length
-L List Asm plugins: (a=asm, d=disasm, A=analyze, e=ESIL, I=RzIL)
-m plugin List supported CPUs for the chosen plugin
-o, -@ addr Set start address for code (default 0)
-O file Output file name (rz-asm -Bf a.asm -O a)
-p Run SPP over input for assembly
-q Quiet mode
-r Output in rizin commands
-s syntax Select syntax (intel, att)
-v Show version information
-x Use hex dwords instead of hex pairs when assembling.
-w Describe opcode
If '-l' value is greater than output length, output is padded with nops
If the last argument is '-' reads from stdin
Environment:
RZ_ARCH e asm.arch # architecture to assemble/disassemble (same as rz-asm -a)
RZ_ASM_ARCH # architecture to assemble/disassemble (same as rz-asm -a)
RZ_ASM_BITS # cpu register size (8, 16, 32, 64) (same as rz-asm -b)
RZ_BITS e asm.bits # cpu register size (8, 16, 32, 64) (same as rz-asm -b)
RZ_DEBUG # if defined, show error messages and crash signal
RZ_NOPLUGINS # do not load shared plugins (speedup loading)Plugins for supported target architectures can be listed with the -L option. Knowing a plugin name, you can use it by specifying its name to the -a option
$ rz-asm -L
_dAeI 8 16 6502 LGPL3 6502/NES/C64/Tamagotchi/T-1000 CPU
adAeI 8 8051 PD Intel 8051 disassembler
_dA__ 64 alpha LGPL3 DEC Alpha Capstone-based disassembler
_dA__ 32 amd29k LGPL3 AMD 29k RISC disassembler (by deroad)
_dA__ 16 32 arc GPL3 Argonaut RISC Core
adAeI 16 32 64 arm BSD ARM Capstone-based disassembler
a____ 16 32 64 arm.as LGPL3 as ARM Assembler (use RZ_ARM32_AS and RZ_ARM64_AS environment) (by pancake)
adAeI 8 16 avr LGPL3 Atmel AVR disassembler
adA_I 16 32 64 bf LGPL3 Brainfuck (by pancake, nibble) v4.0.0
_dA__ 32 chip8 LGPL3 Chip8 disassembler
_dA__ 16 32 64 cil LGPL3 .NET CIL/MSIL (Common Intermediate Language) bytecode disassembler
_dA__ 16 cr16 LGPL3 CompactRISC CR16 disassembler
_dA__ 32 cris GPL3 Axis Communications 32-bit embedded processor disassembler (by pancake)
adA__ 32 64 dalvik LGPL3 Dalvik (Android VM) bytecode disassembler
ad___ 16 dcpu16 PD Mojang′s DCPU-16 disassembler
_dA__ 32 64 ebc LGPL3 EFI bytecode disassembler (by Fedor Sakharov)
adAeI 16 gb LGPL3 GameBoy(TM) (z80-like) (by condret)
_dAe_ 8 16 32 64 ghidra LGPL3 SLEIGH Disassembler from Ghidra (by FXTi)
_dAeI 16 h8300 LGPL3 Hitachi/Renesas H8/300 disassembly plugin
_dA_I 32 hexagon LGPL3 Qualcomm Hexagon (QDSP6) V6 (by Rot127)
_d___ 32 hppa GPL3 HP PA-RISC
_dA__ 4 i4004 LGPL3 Intel 4004 disassembler
_dA__ 8 i8080 BSD Intel 8080 disassembler
adA__ 32 java LGPL-3 Java bytecode disassembler (by deroad)
_d___ 32 lanai GPL3 Google LANAI disassembler
_d___ 8 lh5801 LGPL3 SHARP LH5801 disassembler
_d___ 32 lm32 BSD Lattice Micro 32 ISA disassembler (by Felix Held)
_dA__ 32 64 loongarch LGPL3 Loongson LoongArch disassembler
adA__ 8 luac LGPL3 Lua bytecode (LUAC) disassembler
_dA__ 8 32 m680x BSD Motorola 680X Capstone-based disassembler
_dA__ 32 m68k BSD Motorola 68K Capstone-based disassembler
_dA__ 32 malbolge LGPL3 Malbolge Ternary VM bytecode disassembler (by condret)
_dA__ 32 mcore LGPL3 Motorola MCORE disassembler
_d___ 16 mcs96 LGPL3 Intel MCS-96 disassembler (by condret)
adAeI 16 32 64 mips BSD MIPS Capstone-based disassembler
_dA_I 16 msp430 LGPL3 Texas Instruments MSP430 disassembler
adA__ 16 32 64 null MIT NULL (empty) disassembler (by pancake) v1.0.0
_dA__ 32 or1k LGPL3 OpenRISC 1000 disassembler
_dAeI 16 32 pic LGPL3 Microchip PIC disassembler
_dAeI 32 64 ppc BSD PowerPC Capstone-based disassembler (by pancake)
a____ 32 64 ppc.as LGPL3 as PPC Assembler (use RZ_PPC_AS environment) (by eagleoflqj)
_dA__ 32 propeller LGPL3 Parallax Propeller disassembler
_dA__ 8 16 pyc LGPL3 Python bytecode (PYC) disassembler
_dAe_ 32 64 riscv GPL3 RISC-V disassembler
_dA__ 32 64 riscv.cs BSD RISC-V Capstone-based disassembler
adA__ 32 rl78 LGPL3 Renesas RL78 disassembler (by Bastian Engel)
_dA__ 32 rsp LGPL3 Nintendo N64 Reality Signal Processor disassembler
_dA__ 32 rx LGPL3 Renesas RX Family disassembler (by Heersin)
adAeI 32 sh LGPL3 Hitachi/Renesas SuperH-4 disassembler (by DMaroo)
_dA__ 8 16 snes LGPL3 SuperNES CPU disassembler
_dA_I 32 64 sparc BSD Sun SPARC Capstone-based disassembler
_dA__ 16 spc700 LGPL3 Sony SPC700 (Nintendo SuperNES sound-chip) disassembler
_dA__ 32 64 sysz BSD IBM SystemZ (S/390) Capstone-based disassembler
_dA__ 32 tms320 LGPL3 Texas Instruments TMS320 DSP family (c54x,c55x,c55x+,c64x) disassembler
_dA_I 32 tricore BSD Siemens TriCore Capstone-based disassembler (by billow)
_dAeI 32 v810 LGPL3 NEC V810 disassembler (by pancake)
_dAeI 32 v850 LGPL3 NEC/Renesas V850 disassembler
_dA__ 8 32 vax GPL3 DEC VAX disassembler
adA__ 32 wasm MIT WebAssembly disassembler (by cgvwzq) v0.1.0
_dAeI 16 32 64 x86 MIT X86/X86_64 Zydis-based disassembler
a____ 16 32 64 x86.as LGPL3 Intel X86 GNU Assembler (Use RZ_X86_AS env)
a____ 16 32 64 x86.nasm LGPL3 X86 nasm assembler
a____ 16 32 64 x86.nz LGPL3 x86 handmade assembler
_dA__ 16 xap PD Cambridge Consultants XAP4 RISC (CSR) disassembler
_dA__ 32 xcore BSD XCore Capstone-based disassembler (by pancake)
_dAeI 32 xtensa LGPL3 Tensilica Xtensa Capstone-based disassembler (by billow)
adA__ 8 z80 GPL3 Zilog Z80 disassembler (by condret)Note that “ad” in the first column means both assembler and disassembler are offered by a corresponding plugin. “d” indicates disassembler, ”a” means only assembler is available.