elb-cli

Command-line utility that inspects ELF files, prints their dependencies and patches RPATH, RUNPATH and interpreter.

Based on elb crate.

Installation

cargo install elb-cli

Usage

Show header/sections/segments/tables

$ cargo install elb-cli

$ elb-cli show -t header /bin/sh
Class: Elf64
Byte order: LittleEndian
OS ABI: Sysv
ABI version: 0
File type: Executable
Machine: X86_64
Flags: 0x0
Entry point: 0x41fa60
Program header: 0x40..0x318
Section header: 0xdcce8..0xdd3e8

$ elb-cli show -t all /bin/sh
...

Show dependencies

$ elb-cli deps -f list --hard-coded-search-dirs /bin/ls
/gnu/store/d69awcc5wahh71amx0dmgaimsdvvp2bg-gcc-11.4.0-lib/lib/libgcc_s.so.1
/gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/ld-linux-x86-64.so.2
/gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/libc.so.6
/gnu/store/xjcr0zckc84xg03blss8lrm21hhlm4a6-libcap-2.64/lib/libcap.so.2.64

$ elb-cli deps -f tree --hard-coded-search-dirs /bin/ls
/run/current-system/profile/bin/ls
 ├── /gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/ld-linux-x86-64.so.2
 ├── /gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/libc.so.6
 │   ╰── /gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/ld-linux-x86-64.so.2
 ╰── /gnu/store/xjcr0zckc84xg03blss8lrm21hhlm4a6-libcap-2.64/lib/libcap.so.2.64
     ├── /gnu/store/d69awcc5wahh71amx0dmgaimsdvvp2bg-gcc-11.4.0-lib/lib/libgcc_s.so.1
     │   ╰── /gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/libc.so.6
     │       ╰── /gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/ld-linux-x86-64.so.2
     ├── /gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/ld-linux-x86-64.so.2
     ╰── /gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/libc.so.6
         ╰── /gnu/store/hw6g2kjayxnqi8rwpnmpraalxi0djkxc-glibc-2.39/lib/ld-linux-x86-64.so.2

Patch ELF

$ elb-cli patch \
    --set-interpreter /chroot/lib64/ld-linux-x86-64.so.2 \
    --set-dynamic RUNPATH=/chroot/lib64:/chroot/usr/lib64 \
    /chroot/bin/ls