Missing

DESCRIPTION

Jason todd went missing and all alfred was able to recover from his pc was this file Help Alfred find Jason Author: Rakhul FLAG FORMAT: dsc{[a-zA-Z0-9_]+}

Solution

  • Use this online tool and get password 1983

  • Unzip the rar file, we get 2 folders

  • check .git folder in the nothing_here_to_look_at folder

  • Check commit f50086b592f94cc8d05f9b1dde2eeb10d6c4713c, we get a base64 encoded string

aHR0cHM6Ly93d3cuaW5zdGFncmFtLmNvbS90b2RkX2phc29uX3NlY3VyZS8=

  • Base64 decode gives us an instagram profile link : https://www.instagram.com/todd_jason_secure/

  • Stalking the instagram profile and going through the posts, we get the first part of the flag in one of the posts dsc{h4vINg_FuN_w1

  • Looking up for the same username on twitter and going to the profile, there are 2 encoded strings but one of them is a fake flag and the other one gives us the 2nd half of the flag on base32 decoding

  • base32 decoding the string G5UF6TZVJFHFIX2AJZSF63JUOA2X2=== gives 7h_O5INT_@Nd_m4p5}

  • Combining both the parts gives us the flag

  • FLAG: dsc{h4vINg_FuN_w17h_O5INT_@Nd_m4p5}

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