Linux cli command rasm2

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command rasm2 and provides detailed information about the command rasm2, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the rasm2.

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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.

Set architecture plugin

Show analysis information of given hexpair string

Set architecture bits

Binary input/output (-l is mandatory for binary input)

Select specific CPU (depends on -a arch)

Output in C format

Disassemble hexpair bytes. rasm2 -d 9090

Disassemble showing hexpair and opcode

Use big endian (or swap endianness if used more than once)

Output disassembled instructions in ESIL format.

Read data from file instead of ARG.

Specify input and/or output filters (att2intel, x86.pseudo, …)

Show usage help message.

Show long help message including supported assembler directives

Input/Output length

Ignore/skip N bytes from the beginning of the input buffer

List loaded asm plugins

List loaded anal plugins

List loaded arch plugins

Offset of the opcode to assemble (default is 0)

Alias for -o

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

output to file, for example ‘rasm2 -BF a a.asm’

Show output in r2 script

Select syntax output (intel, att)

Describe opcode (whats op)

Use hex dwords instead of hexpairs in the assembler output

Quiet output (handy for -L, -v, …)

List the supported assembler and preprocessor directives with:

$rasm2 -hh

Assemble opcode:

$ rasm2 -a x86 -b 32 ‘mov eax, 33’

Disassemble opcode:

$ rasm2 -d 90

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