> ## Documentation Index
> Fetch the complete documentation index at: https://rootea.es/llms.txt
> Use this file to discover all available pages before exploring further.

# Hackback

> Verified writeups for the Hackback machine of Hack The Box

# Hackback

<p className="machine-summary"><span className="prompt"><code>\$ tldr</code></span> Gophish log poisoning → reGeorg SOCKS → cron + SeImpersonate</p>

<div className="machine-meta">
  | ·                | ·                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
  | ---------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
  | Operating system | Windows                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
  | Difficulty       | Insane                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
  | Vector           | <span className="vbadge vbadge-windows-privesc">Windows privesc</span>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
  | IP               | `10.10.10.128`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
  | Retirement date  | 2019-07-06                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
  | Skills           | Subdomain Enumeration Information Leakage Password Fuzzing Gophish Template Log Poisoning (Limited RCE) Internal Port Discovery reGeorg - Accessing internal ports through a SOCKS proxy (proxychains) Accessing the WinRM service through reGeorg and SOCKS proxy Abusing Cron Job + SeImpersonatePrivilege Alternative Exploitation Playing with PIPES - pipeserverimpersonate Impersonating users and executing commands as the impersonated user Bypassing Firewall Rules (BlockInbound/BlockOutbound) Abusing Services Alternate Data Streams (ADS) |
</div>

## Writeups

| Language | Author      | Format | Link                                                        |
| -------- | ----------- | ------ | ----------------------------------------------------------- |
| 🇪🇸 ES  | **S4vitar** | Vídeo  | [Open](https://www.youtube.com/watch?v=UMyJt-fiBz8)         |
| 🇬🇧 EN  | **0xdf**    | Texto  | [Open](https://0xdf.gitlab.io/2019/07/06/htb-hackback.html) |
| 🇬🇧 EN  | **IppSec**  | Vídeo  | [Open](https://www.youtube.com/watch?v=B9nozi1PrhY)         |

## Skill resources

Curated documentation for each technique listed in the *Skills* column above. Sources: HackTricks, GTFOBins, PortSwigger, etc.

| Skill                       | Source     | Link                                                                                                              |
| --------------------------- | ---------- | ----------------------------------------------------------------------------------------------------------------- |
| Subdomain Enumeration       | HackTricks | [Open](https://book.hacktricks.wiki/en/generic-methodologies-and-resources/external-recon-methodology/index.html) |
| Information Leakage         | HackTricks | [Open](https://book.hacktricks.wiki/en/pentesting-web/information-leak.html)                                      |
| Directory fuzzing           | HackTricks | [Open](https://book.hacktricks.wiki/en/network-services-pentesting/pentesting-web/index.html)                     |
| Remote Code Execution (RCE) | HackTricks | [Open](https://book.hacktricks.wiki/en/pentesting-web/command-injection.html)                                     |

## Related skills worth mastering

Local File Inclusion (LFI) · Remote File Inclusion (RFI) · Shellshock (CVE-2014-6271)

## If you liked this machine, try

* [Bart](/en/htb/machines/windows/medio/bart) — Windows, Medium
* [Worker](/en/htb/machines/windows/medio/worker) — Windows, Medium
* [Teacher](/en/htb/machines/linux/facil/teacher) — Linux, Easy
* [Curling](/en/htb/machines/windows/facil/curling) — Windows, Easy
* [Remote](/en/htb/machines/windows/facil/remote) — Windows, Easy

***

## Comments & tips

Did the official writeup not work? Found a smarter trick? Share it here — comments live in [GitHub Discussions](https://github.com/FFuson/HTB_Writeups/discussions).

<div className="rootea-giscus-wrap" data-giscus-term="machine:hackback" data-giscus-lang="en" />

*Last updated: 2026-06-07*

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