obfuscatedJS

UMCTF2021 - obfuscatedJS

• Write-Up Author: bluebear [MOCTF]

• Flag:MOCSCTF{RE_0bfusc@tlOn_J5}

Question:

obfuscatedJS

obfuscatedJS

Write up

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• atob() function decodes a string of data which has been encoded using Base64 encoding.

NzcsNzksNjcsODMsNjcsODQsNzAsMTIzLDgyLDY5LDk1LDQ4LDk4LDEwMiwxMTcsMTE1LDk5LDY0LDExNiwxMDgsNzksMTEwLDk1LDc0LDUzLDEyNQ

• After base64 decoded, open browser console, use String.fromCharCode function to convert Decimal to ASCII.

String.fromCharCode(77,79,67,83,67,84,70,123,82,69,95,48,98,102,117,115,99,64,116,108,79,110,95,74,53,125)

• You will get the flag MOCSCTF{RE_0bfusc@tlOn_J5}