ret2win challenges usually provide a hidden success function and a memory corruption bug that lets the attacker overwrite the saved return address.

Requirements

• The binary contains a reachable win, print_flag, or equivalent function.
• The input primitive reaches saved control flow.
• Mitigations do not prevent the chosen control-flow redirect.

Flow

flowchart LR
  A[Find overflow] --> B[Calculate offset]
  B --> C[Find win address]
  C --> D[Overwrite return address]
  D --> E[Receive flag]