PACTF_2018: Who Said It

Category: Lovelace Points: 25 Description:

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The Internet Research Agency (IRA) (Агентство интернет-исследований), also known as Glavset[2] and known in Russian Internet slang as the Trolls from Olgino or kremlebots, is a Russian company, based in Saint Petersburg, engaged in online influence operations on behalf of Russian business and political interests. The agency has employed fake accounts registered on major social networks, discussion boards, online newspaper sites, and video hosting services in order to promote the Kremlin's interests in domestic and foreign policy including Ukraine and the Middle East as well as attempting to influence the 2016 United States presidential election. More than 1,000 employees reportedly worked in a single building of the agency in 2015.
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Write-up

First, we need to get the key used to sign this, so let's find that out with gpg.

$ gpg --verify -i message.asc 
gpg: Signature made Tue Mar 20 07:59:57 2018 +08
gpg:                using RSA key A700B73709DA056D64E63C884CD03F6EFD23E1E9
gpg: Can't check signature: No public key

With the key A700B73709DA056D64E63C884CD03F6EFD23E1E9, we can now attempt to look for it in public key servers using the last 16 characters of the key.

Search results for '0x4cd03f6efd23e1e9'
Type bits/keyID     cr. time   exp time   key expir
pub  4096R/FD23E1E9 2018-03-19            

uid Oxford Automata (the_real_answer_is_always_in_the_comments) <oxfordautomata@sendmiles.email>
sig  sig3  FD23E1E9 2018-03-19 __________ __________ [selfsig]

sub  4096R/A6EF0B4E 2018-03-19            
sig sbind  FD23E1E9 2018-03-19 __________ __________ []

Therefore, the flag is the_real_answer_is_always_in_the_comments.

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