Today I used IDA on a owned compiled software. I notice that IDA show me comment (ascii char) on immediates values as on this screenshoot below : enter image description here

This is the first time I saw it automaticaly. What is the option the enable it ? Most of the time I must add ascii value comment manually...


1 Answer 1


You need to enable "auto comments" https://www.hex-rays.com/products/ida/support/idadoc/1369.shtml

BTW you can write your own auto-commenting scripts like https://www.hex-rays.com/products/ida/support/tutorials/idc/autocomment.shtml

  • If I'm not mistaken, autocomments show a short description of the instruction, not ascii characters on immediate values as OP requested.
    – NirIzr
    Apr 30, 2017 at 9:14
  • Yes ! Option/General/ check Auto Comments Apr 30, 2017 at 16:22
  • This is available in the education version not in the free one!
    – sat
    Oct 19, 2020 at 20:31

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