webProeasy

Lab 61 — OrderNova — Negative Quantity Price Manipulation

hackadvisor

Task: E-commerce food ordering platform with wallet balance, premium item costs more than available funds. Solution: Bypassed client-side validation by sending negative quantity via API to offset total price below wallet balance.

nodejs input_validation business_logic express api price_manipulation ecommerce negative_quantity

business_logic_bypassapi_manipulationserver_side_validation_bypassnegative_quantity_exploitation

$ ls tags/ techniques/

nodejs input_validation business_logic express api price_manipulation ecommerce negative_quantity

business_logic_bypassapi_manipulationserver_side_validation_bypassnegative_quantity_exploitation

Analysis

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

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