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I wonder if it is possible in r2 to make alias for the value that repeats itself many times.

For instance:

Image with movzx eax, byte [rbp + rax - 0x1020 assembly fragment

I want to have an alias for rbp + rax - 0x1020 to be named as cwd[i]. Can it be done?

I haven't found any similar question before, would be great if it was possible.

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    This would be very valuable, and is a surprising omission from radare2. Commented Apr 3 at 16:14
  • @SRobertJames Nice that you revived this question. I posted it on the on the official r2 discord, hopefully someone knows how to do it :)
    – satk0
    Commented Apr 3 at 17:09
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    Great! If you get an answer, please post it here. I'm wondering if there's a hack to do this via macros and command substitution. Commented Apr 3 at 18:00
  • @SRobertJames After discussing it with Pancake, I suggested such a feature on github, check it out (and bump it, pls XD): github.com/radareorg/radare2/issues/22813
    – satk0
    Commented Apr 9 at 16:57
  • @SRobertJames I developed a plugin that resolves this issue, check it in a free time.
    – satk0
    Commented May 20 at 14:38

1 Answer 1

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So, it turns out, there is no way to do it in Radare2. However, I created a plugin with a huge help from pancake, that allows just that:

https://github.com/satk0/r2-afen-plugin

Installation is as simple as running:

r2pm -i r2afen

After installing, you must run radare2 with -e asm.pseudo=true argument for the plugin to actually work:

r2 -e asm.pseudo=true <file>

Then, using this plugin, the command that renames rbp + rax - 0x1020 expression to cwd[i] would be the following:

> afen cmd[i] "rbp + rax - 0x1020"

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