patch_to_libc

use any ubuntu glibc in any ubuntu version (with debug info)! a essential tool for glibc pwn.

install

install eu-unstrip

install patchelf

make them in PATH

usage

run given libc for version info

$ ./libc_64.so.6
GNU C Library (Ubuntu GLIBC 2.23-0ubuntu6) stable release version 2.23, by Roland McGrath et al.

get_libc can download specified version of ubuntu glibc into current dir.

get_libc 2.23-0ubuntu5

or

get_libc 2.23-0ubuntu5 xenial

patchlibc will copy target elf, suffix it with p, and patch that copied elf to use current ld and libc.so.6 in current dir.

patchlibc ./pwn ./ld-2.23.so

then use ./pwnp and enjoy another version of libc with debug info.

internal

down_libc.py: download related deb package (libc6 and libc6-dbg)

merge-libc: extract them and merge them with eu-unstrip, and clean up

patchlibc: use patchelf to patch interpreter path and rpath