mithril
eresi
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mithril
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PatchELF: Simple utility for modifying existing ELF executables and libraries
I built a (research) library a few years ago to rewrite ELF binaries; our research projects ran into a lot of limitations with doing incremental patches to a binary (ELF has a lot of redundant representations of the same data). For us, parsing the binary into a normalized representation, modifying that, and re-serializing worked — we could make more intrusive changes to the binary, and (almost? I don’t recall anything breaking) everything in the Debian repos still ran after the binaries has been rewritten.
I expect the library is now woefully out of date, and documentation is mostly in the form of conference talk slides:
https://github.com/jbangert/mithril
there’s also https://github.com/aclements/libelfin (parsing only, supports dwarf); https://github.com/bx/elf-bf-tools (Turing machine inside elf relocations) and of course the “olg guard” of ELF reversing tools ERESI/elfsh (website seems down; GitHub mirror on https://github.com/thorkill/eresi).
eresi
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PatchELF: Simple utility for modifying existing ELF executables and libraries
I built a (research) library a few years ago to rewrite ELF binaries; our research projects ran into a lot of limitations with doing incremental patches to a binary (ELF has a lot of redundant representations of the same data). For us, parsing the binary into a normalized representation, modifying that, and re-serializing worked — we could make more intrusive changes to the binary, and (almost? I don’t recall anything breaking) everything in the Debian repos still ran after the binaries has been rewritten.
I expect the library is now woefully out of date, and documentation is mostly in the form of conference talk slides:
https://github.com/jbangert/mithril
there’s also https://github.com/aclements/libelfin (parsing only, supports dwarf); https://github.com/bx/elf-bf-tools (Turing machine inside elf relocations) and of course the “olg guard” of ELF reversing tools ERESI/elfsh (website seems down; GitHub mirror on https://github.com/thorkill/eresi).
What are some alternatives?
libelfin - C++11 ELF/DWARF parser
patchelf - A small utility to modify the dynamic linker and RPATH of ELF executables
elf-bf-tools
vscode-remote-release - Visual Studio Code Remote Development: Open any folder in WSL, in a Docker container, or on a remote machine using SSH and take advantage of VS Code's full feature set.