add support for modifying and writing back to file

It would be great to be able to modify certain segments and sections and be able to write dump out the same to a file.

[eliben]

This is currently a non-goal for pyelftools, sorry.

[mefistotelis]

I made a support for adding/modifying ELF sections and writing back the changes; they're on my fork and I use it in my tools (ie. a tool which converts BIN firmware file for ARM-based embedded devices back to ELF).

But my approach/interface may be sub-optimal - I implemented things as I needed them, without a master design.

Maybe, even if merging elf write support is not within foreseeable plans, we need a discussion on how such write interface should look like?

Fork with write support:
https://github.com/mefistotelis/pyelftools
Example use:
https://github.com/o-gs/dji-firmware-tools/blob/master/arm_bin2elf.py

[eliben]

It's fine to keep it on your fork. I still don't plan to add this feature to pyelftools - I just don't have the time to add features currently