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@mutability
mutability / OVERLAYFS
Last active May 30, 2024 16:46
readonly root via overlayfs
- install the two shellscripts into the appropriate places under /etc/initramfs-tools
- run update-initramfs
- put "overlay=yes" on the kernel command line
- reboot
With the overlay in place, the real root is mounted readonly on /ro.
Only the root fs is changed, other filesystems are mounted normally.
Remove "overlay=yes" (or change it to something other than yes) and reboot to go back to readwrite.
(This probably means that you want the commandline config to live somewhere other than on the root fs, e.g. under /boot)
@mayanez
mayanez / Makefile
Last active October 13, 2022 00:46
Simple ROP Exploit Example (x86)
simple-rop: simple-rop.c
gcc -m32 -O0 -g -static -fno-stack-protector $^ -o $@
.PHONY: clean
clean:
rm -rf simple-rop
@huntrar
huntrar / full-disk-encryption-arch-uefi.md
Last active July 13, 2024 08:35
Arch Linux Full-Disk Encryption Installation Guide [Encrypted Boot, UEFI, NVMe, Evil Maid]

Arch Linux Full-Disk Encryption Installation Guide

This guide provides instructions for an Arch Linux installation featuring full-disk encryption via LVM on LUKS and an encrypted boot partition (GRUB) for UEFI systems.

Following the main installation are further instructions to harden against Evil Maid attacks via UEFI Secure Boot custom key enrollment and self-signed kernel and bootloader.

Preface

You will find most of this information pulled from the Arch Wiki and other resources linked thereof.

Note: The system was installed on an NVMe SSD, substitute /dev/nvme0nX with /dev/sdX or your device as needed.

@lolgesten
lolgesten / tokio.rs
Last active March 30, 2021 16:52
futures::io::AsyncRead/AsyncWrite conversion to tokio::io::AsyncRead/AsyncWrite
use futures_io::{AsyncRead, AsyncWrite};
use std::fmt;
use std::io;
use std::pin::Pin;
use std::task::{Context, Poll};
use tokio::io::AsyncRead as TokioAsyncRead;
use tokio::io::AsyncWrite as TokioAsyncWrite;
pub trait Stream: AsyncRead + AsyncWrite + Unpin + Send + 'static {}
@niklaskeerl
niklaskeerl / install_pwndbg.md
Last active June 27, 2024 22:24
Install pwndbg and gdb on arch linux

How to install pwndbg and gdb on arch linux

sudo pacman -S gdb
sudo pacman -S pwndbg
echo 'source /usr/share/pwndbg/gdbinit.py' >> ~/.gdbinit

If you are getting the following error "Cannot find Pwndbg virtualenv directory: /usr/share/pwndbg/.venv: please re-run setup.sh", do the following steps, otherwise ignore: