.Dd Mar 27, 2023 .Dt RASM2 1 .Sh NAME .Nm rasm2 .Nd radare2 assembler and disassembler tool .Sh SYNOPSIS .Nm rasm2 .Op Fl ABdDeEfCLvwrNqx .Op Fl a Ar arch .Op Fl b Ar bits .Op Fl c Ar cpu .Op Fl F Ar in:out .Op Fl o Ar offset .Op Fl @ Ar offset .Op Fl O Ar ofile .Op Fl s Ar syntax .Op Fl i Ar int .Op Fl l Ar int .Op ARG .Sh 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. .Pp .Bl -tag -width Fl .It Fl a Ar arch Set architecture plugin .It Fl A Show analysis information of given hexpair string .It Fl b Ar bits Set architecture bits .It Fl B Binary input/output (\-l is mandatory for binary input) .It Fl c Ar cpu Select specific CPU (depends on \-a arch) .It Fl C Output in C format .It Fl d Disassemble hexpair bytes. rasm2 \-d 9090 .It Fl D Disassemble showing hexpair and opcode .It Fl e Use big endian (or swap endianness if used more than once) .It Fl E Output disassembled instructions in ESIL format. .It Fl f Read data from file instead of ARG. .It Fl F Ar in:out Specify input and/or output filters (att2intel, x86.pseudo, ...) .It Fl h Show usage help message. .It Fl hh Show long help message including supported assembler directives .It Fl l Ar int Input/Output length .It Fl i Ar int Ignore/skip N bytes from the beginning of the input buffer .It Fl L List loaded asm plugins .It Fl LL List loaded anal plugins .It Fl LLL List loaded arch plugins .It Fl o Ar offset Offset of the opcode to assemble (default is 0) .It Fl @ Ar offset Alias for -o .It Fl N Dont load any plugin, same as R2_NOPLUGINS=1 or r2 -NN .It Fl O Ar ofile output to file, for example 'rasm2 \-BF a a.asm' .It Fl r Show output in r2 script .It Fl s Ar syntax Select syntax output (intel, att) .It Fl w Describe opcode (whats op) .It Fl x Use hex dwords instead of hexpairs in the assembler output .It Fl q Quiet output (handy for -L, -v, ...) .El .Sh DIRECTIVES .Pp List the supported assembler and preprocessor directives with: .Pp $rasm2 -hh .Pp .El .Sh EXAMPLES .Pp Assemble opcode: .Pp $ rasm2 \-a x86 \-b 32 'mov eax, 33' .Pp Disassemble opcode: .Pp $ rasm2 \-d 90 .Sh SEE ALSO .Pp .Xr radare2(1) .Sh AUTHORS .Pp pancake