【重要通知】知了堂禁卫实验室全新上线！！
这里有安全体系的学习资源、
最前沿的原创文章、最新的漏洞挖掘原创！！

本期是“二进制安全之堆溢出”系列第一期，主要介绍CTF环境配置。安装pwntools

• sudo apt install python-pip python3-pip
• sudo pip install pwntools
  • 提示安装python-dev可以使用aptitude安装
  • 这一步建议挂代理
• python

>>> import pwn >>> pwn.asm("xor eax,eax") '1xc0' #安装成功安装pwndgb

• git clone https://github.com/pwndbg/pwndbg
• cd pwndbg
• ./setup.sh

安装gef

• wget -q https://github.com/hugsy/gef/raw/master/gef.py
• echo "source ~/gef/gef.py" >> ~/.gdbinit

安装peda

• git clone https://github.com/longld/peda.git ~/peda
• echo "source ~/peda/peda.py" >> ~/.gdbinitfile

安装ROPgadget

• 用来构建rop链
• git clone https://github.com/JonathanSalwan/ROPgadget.git
• pip install capstone
• cd ROPgadget
• python setup.py install
• ROPgadget

安装one_gadget

• 寻找libc文件中的一些shell地址
• gem install one_gadget

gdb切换脚本
#!/bin/bash function Mode_change { name=$1 gdbinitfile=/root/.gdbinit #这个路径按照你的实际情况修改 peda="source ~/peda/peda.py" #这个路径按照你的实际情况修改 gef="source ~/gef/gef.py" #这个路径按照你的实际情况修改 pwndbg="source /root/pwndbg/gdbinit.py" #这个路径按照你的实际情况修改 sign=$(cat $gdbinitfile | grep -n "#this place is controled by user's shell") #此处上面的查找内容要和你自己的保持一致 pattern=":£this place is controled by user's shell" number=${sign%$pattern} location=$[number+2] parameter_add=${location}i parameter_del=${location}d message="TEST" if [ $name -eq "1" ];then sed -i "$parameter_del" $gdbinitfile sed -i "$parameter_add $peda" $gdbinitfile echo -e "Please enjoy the peda!n" elif [ $name -eq "2" ];then sed -i "$parameter_del" $gdbinitfile sed -i "$parameter_add $gef" $gdbinitfile echo -e "Please enjoy the gef!n" else sed -i "$parameter_del" $gdbinitfile sed -i "$parameter_add $pwndbg" $gdbinitfile echo -e "Please enjoy the pwndbg!n" fi } echo -e "Please choose one mode of GDB?n1.peda 2.gef 3.pwndbg" read -p "Input your choice:" num if [ $num -eq "1" ];then Mode_change $num elif [ $num -eq "2" ];then Mode_change $num elif [ $num -eq "3" ];then Mode_change $num else echo -e "Error!nPleasse input right number!" fi gdb $1 $2 $3 $4 $5 $6 $7 $8 $9安装zsh

• apt-get install zsh
• git clone https://github.com/robbyrussell/oh-my-zsh.git
• cd oh-my-zsh/tools
• ./install.sh
• 下载安装 zsh-autosuggestions （自动补全可能路径）
  • git clone git://http://github.com/zsh-users/zsh-autosuggestions $ZSH_CUSTOM/plugins/zsh-autosuggestions
• 下载 autojump （快速跳转）
  • git clone https://github.com/joelthelion/autojump.git
  • cd autojump
  • ./install.py
  • 将[[ -s ~/.autojump/etc/profile.d/autojump.sh ]] && . ~/.autojump/etc/profile.d/autojump.sh添加到zshrc文件尾 下载安装 zsh-syntax-highlighting （终端输入高亮 正确路径下划线）
  • git clone https://github.com/zsh-users/zsh-syntax-highlighting.git ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-syntax-highlighting
• vi ~/.zshrc
• plugins=(git autojump zsh-autosuggestions zsh-syntax-highlighting)
• source .zshrc
• 改变默认shell
  • chsh -s /bin/zsh

辅助命令查看libc版本

• find / -name libc.so.6
• ll /lib/x86_64-linux-gnu/libc.so.6 lrwxrwxrwx 1 root root 12 4月 15 06:11 /lib/x86_64-linux-gnu/libc.so.6 -> libc-2.23.so
• sudo ldd --version

ldd (Ubuntu GLIBC 2.27-3ubuntu1) 2.27 Copyright (C) 2018 自由软件基金会。开启ssh

• apt-get install openssh-server
• vi /etc/ssh/sshd_config
• vi /etc/ssh/ssh_config

添加:PermitRootLogin yes
以上就是本期全部内容啦！！【下期预告】二进制安全之堆溢出——堆基础 & 结构