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SecuInside 2013 BigFile Writeup

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This challenge was a little fun as people trying to wget the file would fail pretty terribly with random connection drops and a 95mb file to try to download. Luckily the answer is simple, just use cURL.

 

[01:25:15 connection@GLaDOS.local:~]$ curl -r 100000000-100000489 “http://119.70.231.180/secret_memo.txt”
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….key is : we will destroy the world!

 

The -r operand lets us specify a range of a file to grab. As the file was 95mb I decided to grab the last ~500 bytes and see what we got. The key to this one is “we will destroy the world!”

 

Keep your hacks up and your head down

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