PACTF_2018: Credit Card Leak

Category: Lovelace Points: 35 Description:

ShoeShop was hacked, and all of their customer records were released online—including credit card numbers. One credit card in the leak is invalid, however. What is the invalid credit card number? Here’s the leak: cc_leak.txt

Write-up

Simple challenge, easily solved via Python.

# ./solve.py 
8692015931457397

Therefore, the flag is 8692015931457397.

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