NAME¶

rasm2 — radare2 assembler and disassembler tool

SYNOPSIS¶

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

-LLL

List loaded arch plugins

-o offset

Offset of the opcode to assemble (default is 0)

-@ offset

Alias for -o

-N

Dont load any plugin, same as R2_NOPLUGINS=1 or r2 -NN

-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

SEE ALSO¶

radare2(1)

AUTHORS¶

pancake <pancake@nopcode.org>