Doctor

Verified writeups for the Doctor machine of Hack The Box

Doctor

$ tldr Flask SSTI RCE → adm log creds → SplunkWhisperer2

·	·
Operating system	Linux
Difficulty	Easy
Vector	Web
IP	10.10.10.209
Retirement date	2021-02-06
Skills	Server Side Template Injection (SSTI) Exploiting the SSTI by calling Popen without guessing the offset (1st way) [RCE] Command Injection (2nd way) [RCE] Abusing adm group - Finding credentials in request logs Splunk Exploitation (Universal Forwarder Missconfiguration) - SplunkWhisperer2 [Privilege Escalation]

Writeups

Language	Author	Format	Link
🇪🇸 ES	S4vitar	Vídeo	Open
🇬🇧 EN	0xdf	Texto	Open
🇬🇧 EN	IppSec	Vídeo	Open

Skill resources

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

Skill	Source	Link
SSTI (Server-Side Template Injection)	PortSwigger	Open
OS Command Injection	PortSwigger	Open
Remote Code Execution (RCE)	HackTricks	Open

Related skills worth mastering

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

If you liked this machine, try

• RouterSpace — Linux, Easy
• ScriptKiddie — Linux, Easy
• Flustered — Linux, Medium
• Noter — Linux, Medium
• Union — Linux, Medium

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Last updated: 2026-06-07