webhard

Pavel

alfactf

Task: Social network with bot that visits user profiles and has flag cookie with httpOnly:false. Solution: Stored XSS via unsanitized avatar_url opens popup window that persists across bot navigation and steals cookie after bot logs in.

$ ls tags/ techniques/

xss stored_xss cookie_stealing selenium_bot popup_window httponly_false avatar_injection social_network client_side

Stored XSS via unsanitized avatar_url attributeCookie stealing via popup window persistenceSelenium bot exploitationhttpOnly:false cookie extraction

Analysis

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$ 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.

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