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Write-Up Author: RB916120 [MOCTF]
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Flag:MOCSCTF{y0u_c4n_533_pr1m3_n0w3321?}
Break my shield
let drop the code and speed up the things.
chall_out =[]
chall = "MVNOKHSCGEdxPSsYcEnvWCXFFkwZAuadcTpiBfSyYkkGbWfFrcEJuUjdgXrtsFZWI{GbNDdwPvxduXnlvZCcbyrqbSmHlTTbxnkPLxenfFUXz0aIUAjmftxRQuvZPFTQwIMbENWOgghuZYSxFDfcRrzkkyovMixzHExpkAdpgab_QZFPMzPRzDhBuKqXpTZupmwmjxZJtcXCfliXycQgFOoQHjMzwmnAGklXTQpQpOorCzvNwQnWwudJphS4bItwqxRPjgQmZsXoJoDudmCRCfKAOdgfuWBRuGSJRzfnkckktbOFbPFUhsfOLvVCgtSSNRRqbvCvnSUrRpwDEEtTLHz_xVxSVTgxjIjjKJLQhicECzavIgLoHCExourDPLlrLfrmGdabjoiTk5WQqSyjSMjmENKJHaQZqxLanSZWoSFMxEMrICRZbkiKytvxjAITBiGnAIaND3BOtHajsFZjduZsPlnrpKSmqohKEOvevpvpvdIcILLlDJYjggTsZTHrkJCDRCH3UfuqqeVsuAEhNAXbQLVPcMAcFUjtfqoGJwdyAcZQkdZijGGgUTXNwEVAMNsGzUQGsFp_XMjbRVHjSEwfKOOHFtyKmMfViPQewMKslgYvwJPdgiNulOCktVMnlNwxPVsiVlAhkowQydgpTBAuDXlViySfeBUJfaxxbyfVYgGrlXUOOuNOGsRaBgYzbnvMcayZeZjbLWvTViXoZrHGsmLcCrmlINHZrwelNuPmGzmAwiQwnLEYpHhAFTYzzkiIXIDndIBYfrXgmOoeqxiKkEEgHoBbusXyfpqMmMKCi1oFPEucltKZhIYrfuKZceluARvKJTIxVEBoesheEZYyQbvfMJJixcJnKwtZKRkvhxzAJSKEloqFhRdpNkoJwmiavvKeOeMZaSOGwaMRUrXJrDcaQgdvsHdVxMpfVScGVGzdeFWzmjQVmSAKkaRRbLPEdwqsQvIRUJHzQgDMCbRIwVy3PoykpmBqWBvhJFhBaQDEYyuPTrvHauBIRFrcmgUYoMqQeHNALvxvqmyVgeLJbTgKMIRXUScsmrOOZPFQNSoEYpNyPYiHEswba_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?CVNCPUvSGIzOgleSZWIyohSCTWBGtbrUgBTUixRZtBfMdoZijiZmAMbHjUrusvdzTMXJkBzoJNbvNyRcFVlBqTznkVJttKwXmwlflYRmSyYmidTWdUgIOgxWzDtOdExLyJtYSmyEmlq}dVMQJDHabZZIjljeXatWLQJsyDAonpUGXkHfiGDOwCqQwgZTUjBjCASSdSzneMrSRdSnvDAqXLpfVWEUxXLgsUjSctcPOsItMvYPytLyeYvAjazrSSXAjMFWHsaxKhTcPNwoNcQZeazIRmScicDvRoTSMOCNaBeLGVHirQPuxAFrKPXcJNruJhaEyqwyaunHBzRhhGHnxjsQswFeCOqWtEHnekqEGvSwLBfvyFZQFhWAarkeXHoDNAUlHBgOCaSBKjMusnKqIpMAqnmdqsoDCjFtBsWHICFJVabOYvBapAZ"
for num in range(1, 150):
if num > 1:
for i in range(2, num):
if (num % i) == 0:
break
else:
#print(num)
for j in range(0,num+1):
if(j==0):
chall_out.append(chall[j])
elif j==num:
chall = chall[num+1 : : ]
for i in chall_out:
print(i,end='')