Download file cert dari picoctf  

    Akes situs https://redkestrel.co.uk/tools/decoder#decoder-results , lalu upload file cert yang telah diunduh dan klik Decode 

      Perhatikan detail certificate, lalu cari modulus 

        Jika sudah ketemu, salin modulus lalu akses link https://factordb.com/index.php?query=4966306421059967 dan paste nilai modulus ke inputan 

          Klik factorize 

          Cek di result, terapkan hasilnya ke picoCTF{} jadi begini picoCTF{73176001,67867967


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