syncom/20190519.how_to_create_qemu_arm_guest_on_x86_host.md

## 20190519.how_to_create_qemu_arm_guest_on_x86_host.md

      
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              20190519.how_to_create_qemu_arm_guest_on_x86_host.md
            
          
    How to Create QEMU ARM Guest on x86_64 Linux Host

This document describes how I created a QEMU ARM (A32) guest on an x86_64 host
(Ubuntu on Dell XPS developer edition). The process relies heavily on the
arm_now tool. The commands are as follows.
Install dependencies on host Ubuntu machine

mkdir arm-qemu
cd arm-qemu/
sudo apt install python3-venv
sudo apt install e2tools
python3 -m venv env
source env/bin/activate
pip3 install wheel
pip3 install https://github.com/nongiach/arm_now/archive/master.zip --upgrade
arm_now start armv5-eabi
The ARM guest should start. When you see
Welcome to arm_now
buildroot login:
enter 'root' to get a root shell on the guest.
# uname -a
Linux buildroot 4.11.3 #1 SMP Sun Mar 4 00:49:28 UTC 2018 armv7l GNU/Linux
Poweroff the guest. On the host, do arm_now resize +10G to resize the virtual
machine. You may need to do so to install more packages.
How to run an ARM exploitation tutorial

First start the guest again by arm_now start armv5-eabi.
To run the ROP on ARM tutorial,
do the following on the guest.
wget https://github.com/syncom/rop-on-arm-rpi3-tutorial/archive/master.zip
unzip -x master.zip
cd rop-on-arm-rpi3-tutorial-master/
opkg install vim
opkg install gdb
opkg install make
opkg install gcc
opkg install python
cd src/
make # You may need to tweak the Makefile a bit, because execstack is not available on the platform