picoCTF 2025 - Web Exploitation - SSTI1

picoCTF 2025 capture the flag competition: SSTI1 challenge in Web Exploitation category - full solve walk-through, using a template injection table to find the template engine and then craft the payload step by step to get the flag.

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⏰ Timestamps ⏰
00:00 Challenge Overview
00:42 Template Injection Table
04:12 Crafting the Payload
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