# BlockSynergy Writeup - HackTheBox

> Insane Linux box exploiting blockchain smart contract vulnerabilities and complex service synergies to achieve full system compromise.

- **URL:** https://hackindex.io/writeups/blocksynergy
- **Platform:** HackTheBox
- **Difficulty:** Insane
- **Operating system:** Linux
- **Machine:** https://app.hackthebox.com/machines/BlockSynergy?sort_by=created_at&sort_type=desc
- **Tags:** command-injection, ssrf, privilege-escalation, suid, cron-abuse
- **Access:** Partly password protected
- **Authors:** [Khant-Nyar](https://hackindex.io/authors/khant-nyar.md)
- **Read time:** 5 min read
- **Published:** 2026-08-26
- **Updated:** 2026-09-11

```bash
nmap -sCV -T4 -p8080 $TARGET_IP -oA nmap/nmap
# PORT     STATE SERVICE VERSION
# 8080/tcp open  http    Werkzeug/3.0.1 Python/3.11.8
# |_http-title: BlockSynergy
```

Would you like to solve this machine together? Join our discord and/or our [open HTB team!](https://app.hackthebox.com/public/teams/8368)

Domain: **blocksynergy.htb**

> [!NOTE]
> The rest of this writeup is password protected, the platform asks to keep solutions of active machines private. Open the page in a browser to unlock it.