BackdoorCTF 2016 - intro16
BackdoorCTF is the annual flagship CTF competition conducted by SDSLabs and InfoSecIITR.
Get the first part of the flag from IRC freenode (#backdoorctf) and the second part from twitter(@BackdoorCTF)
As the description says I got the first part of the flag from IRC(#backdoorctf) ->
The second part of the flag from twitter(@BackdoorCTF) ->
Joining this we get a base64 encoded string ->
Decoding this and taking its SHA256 hash we get our solution.
echo -n NWQ1bDRiNV9iNGNrZDAwcmM3ZjIwMTY= | base64 --decode | shasum -a 256
Note that I added
echo to prevent an extra newline being appended at the end, which will change the SHA256 checksum.
Bandit Level 19