NAME

rasm2 — radare2 assembler and disassembler tool

SYNOPSIS

rasm2 [-ABdDeEfCLvwrqx] [-a arch] [-b bits] [-c cpu] [-F in:out] [-o offset] [-@ offset] [-O ofile] [-s syntax] [-i int] [-l int] [ARG]

DESCRIPTION

This tool uses r_asm to assemble and disassemble files or hexpair strings. It supports a large list of architectures which can be listed using the -L flag.

-a arch: Set architecture plugin
-A: Show analysis information of given hexpair string
-b bits: Set architecture bits
-B: Binary input/output (-l is mandatory for binary input)
-c cpu: Select specific CPU (depends on -a arch)
-C: Output in C format
-d: Disassemble hexpair bytes. rasm2 -d 9090
-D: Disassemble showing hexpair and opcode
-e: Use big endian (or swap endianness if used more than once)
-E: Output disassembled instructions in ESIL format.
-f: Read data from file instead of ARG.
-F in:out: Specify input and/or output filters (att2intel, x86.pseudo, ...)
-h: Show usage help message.
-hh: Show long help message including supported assembler directives
-l int: Input/Output length
-i int: Ignore/skip N bytes from the beginning of the input buffer
-L: List loaded asm plugins
-LL: List loaded anal plugins
-o offset: Offset of the opcode to assemble (default is 0)
-@ offset: Alias for -o
-O ofile: output to file, for example 'rasm2 -BF a a.asm'
-r: Show output in r2 script
-s syntax: Select syntax output (intel, att)
-w: Describe opcode (whats op)
-x: Use hex dwords instead of hexpairs in the assembler output
-q: Quiet output (handy for -L, -v, ...)

DIRECTIVES

List the supported assembler and preprocessor directives with:

$rasm2 -hh

EXAMPLES

Assemble opcode:

$ rasm2 -a x86 -b 32 'mov eax, 33'

Disassemble opcode:

$ rasm2 -d 90

AUTHORS