Niklas Adolfsson niklasad1

Keybase proof

I hereby claim:

I am niklasad1 on github.
I am niklasad1 (https://keybase.io/niklasad1) on keybase.
I have a public key whose fingerprint is 212D 86C2 71EE 3B70 8777 D5C4 A5C9 609E 830D 742A

To claim this, I am signing this object:

Level 0

ssh into the machine by

ssh [email protected]
pwd: narnia0

check narnia0.c and it's obviously vulnerable to a buffer overflow i.e. scanf read 24 chars into a 20 char buffer. Thus we need to enter 20 random chars + 0xdeadbeef.

But first check the architechture i.e. how the byte is read by the processor.

$ objcopy --only-keep-debug "${tostripfile}" "${debugdir}/${debugfile}"
$ strip --strip-debug --strip-unneeded "${tostripfile}"
$ objcopy --add-gnu-debuglink="${debugdir}/${debugfile}" "${tostripfile}"

	filetype off
	" set the runtime path to include Vundle and initialize
	set rtp+=~/.vim/bundle/Vundle.vim
	call vundle#begin()

	" " let Vundle manage Vundle, required
	Plugin 'VundleVim/Vundle.vim'
	Plugin 'scrooloose/nerdtree'
	Plugin 'scrooloose/nerdcommenter'
	Plugin 'Chiel92/vim-autoformat'

	# Initial setup
	set -g default-shell /bin/zsh
	set -g default-terminal screen-256color
	set -g status-keys vi

	# Prefix
	set-option -g prefix C-a
	unbind-key C-a
	bind-key C-a send-prefix
	set -g base-index 1

	#--------------------ENV Variables---------------------------------------------#
	export LANG=en_US.UTF-8 # UTF8
	export TERM="xterm-256color" # 256 color schemes support
	export EDITOR=vim
	export SSH_KEY_PATH="~/.ssh/dsa_id" # ssh key
	export VIMRC=$HOME/.vimrc
	#-----------------------------------------------------------------------------#


	#---------------------OH-MY-ZSH SETTINGS------- ------------------------------#

	#set mod key to win
	set $mod Mod4

	# Font for window titles. Will also be used by the bar unless a different font
	# is used in the bar {} block below.
	font pango:System San Fransisco Display 11
	# Use Mouse+$mod to drag floating windows to their wanted position
	floating_modifier $mod

	# start a terminal

	out_to_x no
	own_window no
	out_to_console yes
	background no
	max_text_width 0
	net_avg_samples 3

	# Update interval in seconds
	update_interval 2

	#!/bin/bash
	echo '{"version":1}'
	echo '['
	echo '[],'
	exec conky -c $HOME/.conkyrc

	[global_config]
	enabled_plugins = CustomCommandsMenu, TestPlugin, LaunchpadCodeURLHandler, APTURLHandler, LaunchpadBugURLHandler
	title_font = Ubuntu Mono 9
	title_use_system_font = False
	[keybindings]
	page_down_half = Page_Down
	page_up_half = Page_Up
	[layouts]
	[[default]]
	[[[child1]]]