Challenge Description
How about we take you on an adventure on exploring certificate signing requests Take a look at this CSR file here.
Approach and Steps
Download and cat the file
cat readmycert.csr
-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----
This looks like base64 to i decode it and got the flag.
Flag
Flag
picoCTF{read_mycert_373b4ab0}