pentestPromedium

DevHub

hackthebox

Task: an HTB Linux machine exposed MCPJam Inspector plus internal developer services reachable after foothold. Solution: exploit CVE-2026-23744 for SSH access as mcp-dev, pivot through a leaked Jupyter token to analyst, then abuse a hidden localhost OPSMCP admin tool to steal root SSH keys.

flask ssh nginx virtual_host cve hackthebox mcpjam jupyterlab

vhost_discoverycve_exploitationssh_authorized_keys_abusejupyter_kernel_executionlocalhost_service_abusehidden_admin_tool_abuse

$ ls tags/ techniques/

flask ssh nginx virtual_host cve hackthebox mcpjam jupyterlab

vhost_discoverycve_exploitationssh_authorized_keys_abusejupyter_kernel_executionlocalhost_service_abusehidden_admin_tool_abuse

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Permission denied (requires tier.pro)

Sign in to access full writeups

$sign in

$ cat writeup.md…

Sign in to access full writeups

Sign in to access full writeups

Similar writeups