Web Lab 1¶

Task 1 (70%)¶

Implement a DNS rebinder:

• resolve normally for common hosts
• resolve to different ip addresses (A record) in different responses for certain hosts
• low TTL

Task 2 (30%)¶

Finish the challenge SSRF in SchoolBus (https://zjusec.com/challenges/47)

(Using the rebinder in Task 1 is not required)

What to submit¶

For task 1, code with comments (or additional docs) and a running demo.

For task 2, your writeup.

PDF is recommended.