README.md

Inject your GLIBC to ELF

Giving the ability to patch any elf to other glibc that you've compiled.

Requirements

• Python 3
• An linux machine with toolchain

Ubuntu:

sudo apt-get install -y build-essential
pip3 install -r requirements.txt

Usage

Compile GLIBC

Compiling:

./compile_glibc.sh

note: make sure you've pull GLIBC for change the GLIBC version you may want to change the tag of GLIBC_TAG in compile_glibc.sh script

Patch/Inject to other GLIBC version

./inject_glibc.sh my_program

Example

generic c file

// test.c
#include <stdio.h>


int main(void)
{
    printf("Hello World!\n");
    return 0;
}

Compile

gcc -o test test.c

Check current glibc

$ ldd test
	linux-vdso.so.1 (0x00007ffdc39c3000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f1588200000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f15884a3000)

Inject the glibc

./inject_glibc.sh test

checking the patched one:

$ ldd patched_test 
	linux-vdso.so.1 (0x00007ffce55fd000)
	libc.so.6 => builds/glibc-2.39/libc.so.6 (0x00007effeca07000)
	/lib64/ld-linux-x86-64.so.2 (0x00007effecbf7000)

running

chmod +x ./patched_test
LD_LIBRARY_PATH="builds/glibc-2.39/elf/ld.so" ./patched_test
# print back Hello World!

or by the script:

chmod +x ./patched_test
./run_binary.sh ./patched_test

Permanent Bash alias

echo "alias run_binary=\"${pwd}/run_binary.sh\"" >> ~/.bashrc