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I have some experience with IDA and now I'm trying to use Radare2/Cutter the same way. I disassemble a DOS MZ file. I have the following:

;-- section.seg_000: 12: entry0 (); 0000:0000 push ds ; [00] -rwx section size 10784 named seg_000 0000:0001 xor ax, ax ;-- di: 0000:0003 push ax 0000:0004 mov ah, 0x30 ; '0' 0000:0006 int 0x21 0000:0008 mov byte cs:[0x11], al 665: fcn.0000000c (); 0000:000c cmp al, 2 0000:000e jae 0x12 0000:0010 retf 0000:0011 .byte 0x00 ; RELOC 16 0000:0012 mov ax, 0x2a2 ; RELOC 16

I want to label address 0x11 as DOSVersion and reference it by this name instead of the offset. In IDA (Turbo Assembler syntax), I can make it look like this:

proc Main far push ds xor ax, ax push ax mov ah, DOS_FN_VERSION int DOS_INT mov [cs:DOSVersion], al cmp al, DOS_VERSION_2_0 jnb short ProperDosVer retf DOSVersion db 0 ProperDosVer: mov ax, DSEG

How can I achieve the same result with Radare2/Cutter?

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1 Answer 1

Reset to default
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In cutter you have an option under right mouse button click to set a label for a particular value.

enter image description here

Or you can use Shift+N to activate that.

From r2 you can get the same behavior by issuing a f name = addr command. 

| f name 12 @ 33 set flag 'name' with length 12 at offset 33 | f name = 33 alias for 'f name @ 33' or 'f name 1 33'

One caveat,it has to start from label. to be inlined in your disassembly. If not it will show up as a comment (not sure if that can be controlled)

So in your case it would be f label.DosVersion = 0x11

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