webProeasy

Lab 408 — MailNest — Broken Authentication via Unauthenticated Password Reset

hackadvisor

Task: Express.js email marketing platform with publicly accessible API docs revealing a force-reset-password endpoint with no authentication. Solution: Enumerate API endpoints via /api/v1/docs, reset admin password via unauthenticated force-reset-password, login as admin, retrieve flag from admin config.

nodejs nginx express api_security password_reset decoy_flag account_takeover unauthenticated_access broken_authentication admin_endpoint hackadvisor force_reset_password api_documentation_disclosure

broken_access_controladmin_account_takeoverapi_endpoint_enumerationdecoy_flag_recognitionapi_documentation_disclosureunauthenticated_password_reset

$ ls tags/ techniques/

nodejs nginx express api_security password_reset decoy_flag account_takeover unauthenticated_access broken_authentication admin_endpoint hackadvisor force_reset_password api_documentation_disclosure

broken_access_controladmin_account_takeoverapi_endpoint_enumerationdecoy_flag_recognitionapi_documentation_disclosureunauthenticated_password_reset

Analysis

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

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