Pwndocker

A docker environment for pwn in ctf based on phusion/baseimage:focal-1.2.0, which is a modified ubuntu 20.04 baseimage for docker

Usage

docker-compose up -d
docker exec -it pwn_test /bin/bash

included software

pwntools —— CTF framework and exploit development library
pwndbg —— a GDB plug-in that makes debugging with GDB suck less, with a focus on features needed by low-level software developers, hardware hackers, reverse-engineers and exploit developers
pwngdb —— gdb for pwn
ROPgadget —— facilitate ROP exploitation tool
roputils —— A Return-oriented Programming toolkit
one_gadget —— A searching one-gadget of execve('/bin/sh', NULL, NULL) tool for amd64 and i386
angr —— A platform-agnostic binary analysis framework
radare2 —— A rewrite from scratch of radare in order to provide a set of libraries and tools to work with binary files
seccomp-tools —— Provide powerful tools for seccomp analysis
linux_server[64] —— IDA 7.0 debug server for linux
tmux —— a terminal multiplexer
ltrace —— trace library function call
strace —— trace system call

included glibc

Default compiled glibc path is /glibc.

2.19 —— ubuntu 12.04 default libc version
2.23 —— ubuntu 16.04 default libc version
2.24 —— introduce vtable check in file struct
2.27 —— ubuntu 18.04 default glibc version
2.31 —— ubuntu 20.04 default glibc version(built-in)
2.28~~2.30,2.33~~2.36 —— latest libc versions

Q&A

How to run in custom libc version?

cp /glibc/2.27/64/lib/ld-2.27.so /tmp/ld-2.27.so
patchelf --set-interpreter /tmp/ld-2.27.so ./test
LD_PRELOAD=./libc.so.6 ./test

from pwn import *
p = process(["/path/to/ld.so", "./test"], env={"LD_PRELOAD":"/path/to/libc.so.6"})

How to run in custom libc version with other lib?

if you want to run binary with glibc version 2.28:

root@pwn:/ctf/work# ldd /bin/ls
linux-vdso.so.1 (0x00007ffe065d3000)
libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007f004089e000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f00406ac000)
libpcre2-8.so.0 => /lib/x86_64-linux-gnu/libpcre2-8.so.0 (0x00007f004061c000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f0040616000)
/lib64/ld-linux-x86-64.so.2 (0x00007f00408f8000)

root@pwn:/ctf/work# /glibc/2.28/64/ld-2.28.so /bin/ls
/bin/ls: error while loading shared libraries: libselinux.so.1: cannot open shared object file: No such file or directory

You can copy /lib/x86_64-linux-gnu/libselinux.so.1 and /lib/x86_64-linux-gnu/libpcre2-8.so.0 to /glibc/2.28/64/lib/, and sometimes it fails because the built-in libselinux.so.1 requires higher version libc:

root@pwn:/ctf/work# /glibc/2.28/64/ld-2.28.so /bin/ls
/bin/ls: /glibc/2.28/64/lib/libc.so.6: version `GLIBC_2.30' not found (required by /glibc/2.28/64/lib/libselinux.so.1)

it can be solved by copying libselinux.so.1 from ubuntu 18.04 which glibc version is 2.27 to /glibc/2.28/64/lib:

docker run -itd --name u18 ubuntu:18.04 /bin/bash
docker cp -L u18:/lib/x86_64-linux-gnu/libselinux.so.1 .
docker cp -L u18:/lib/x86_64-linux-gnu/libpcre2-8.so.0 .
docker cp libselinux.so.1 pwn:/glibc/2.28/64/lib/
docker cp libpcre2-8.so.0 pwn:/glibc/2.28/64/lib/

And now it succeeds:

root@pwn:/ctf/work# /glibc/2.28/64/ld-2.28.so /bin/ls -l /

ChangeLog

2023-10-22

add zsh and ohmyzsh to docker image, update pwntools version to 4.11.0

2023-01-27

add glibc versions 2.33~2.36 to docker image, and update pwntools version to 4.9.0

2022-03-06

add pwntools_version docker build argument, 4.8.0b0 is set in repo docker build actions

2022-2-10

add docker-compose.yml

2021-10-25

add docker build action and update radare2 version to latest

2020-09-06

update base image to 20.04(glibc 2.31) and add glibc 2.27

2020-05-22

update radare2 to version 4.4.0 and add r2pipe python binding

2020-04-11

add libc 2.30 and 2.31

2020-02-19

python packages switched to python3 version, remove roputils.py

gg0h/pwndocker