Anatomy of an ELF executable • Hacker News Board

Re: Anatomy of an ELF executable

#21

Post by adrianh_589 » Wed, May 01, 2019, 1:32 AM UTC

hk__2 wrote: post #11

Title should have (2017).

I agree with that.

Re: Anatomy of an ELF executable

#22

Post by unqueued » Wed, May 01, 2019, 2:01 AM UTC

dietrichepp wrote: post #2

Strongly recommend reading "How To Write Shared Libraries" by Ulrich Drepper https://software.intel.com/sites/default/files/m/a/1/e/dsoho... I recently dove into ELF files so I could convert ELF binaries to DOS EXE, for a little bit of retro programming with modern compilers. Not that I couldn't have used DJGPP.

> I recently dove into ELF files so I could convert ELF binaries to DOS EXE, for a little bit of retro programming with modern compilers. Not that I couldn't have used DJGPP.

That sounds pretty cool, did you make anything you could share?

Re: Anatomy of an ELF executable

#23

Post by ddcc7 » Wed, May 01, 2019, 3:06 AM UTC

Are you the author? Great job for the detailed writeup. Small nit, I noticed you misspelled the interpreter section, it should be .interp instead of .intrep

Re: Anatomy of an ELF executable

#24

Post by dietrichepp » Wed, May 01, 2019, 5:36 AM UTC

unqueued wrote: post #22

dietrichepp wrote: post #2

Strongly recommend reading "How To Write Shared Libraries" by Ulrich Drepper https://software.intel.com/sites/default/files/m/a/1/e/dsoho... I recently dove into ELF files so I could convert ELF binaries to DOS EXE, for a little bit of retro programming with modern compilers. Not that I couldn't have used DJGPP.

> I recently dove into ELF files so I could convert ELF binaries to DOS EXE, for a little bit of retro programming with modern compilers. Not that I couldn't have used DJGPP. That sounds pretty cool, did you make anything you could share?

Going to post it to GitHub when I have a moment. I literally wrote the code a couple weeks ago.

Edit: https://github.com/depp/elf2dos

Re: Anatomy of an ELF executable

#25

Post by russellbeattie » Wed, May 01, 2019, 5:44 AM UTC

zonovar wrote: post #19

Interesting article. When I was studying the elf format myself in the past I've also found very useful this poster. https://github.com/corkami/pics/blob/master/binary/elf101/el... The author has made many more for similar binary formats.

COM files are great... no headers, you just sort of start. Data, code... whatever.

Re: Anatomy of an ELF executable

#26

Post by sk0g » Wed, May 01, 2019, 5:57 AM UTC

hk__2 wrote: post #11

Title should have (2017).

A lot has changed in the world of ELF executables, this information is just soo misleading.

Re: Anatomy of an ELF executable

#27

Post by kishu18 » Wed, May 01, 2019, 6:06 AM UTC

ddcc7 wrote: post #23

Are you the author? Great job for the detailed writeup. Small nit, I noticed you misspelled the interpreter section, it should be .interp instead of .intrep

Thanks @ddcc7. Yes, I am the author. Fixed the spelling mistake.