43 lines
1.1 KiB
Markdown
43 lines
1.1 KiB
Markdown
## QR Code
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The main idea finding the flag is to decrypt multiple encryptions.
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#### Step-1:
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After downloading, `qrcode.39907201.png` from the cloud, my first try was to scan it online:
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<img src="qrcode.39907201.png">
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#### Step-2:
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I followed the URL: https://webqr.com/index.html
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I got the following message after the scan:
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<img src="Scan.png">
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Message: `c3ludCB2ZiA6IGEwX29icWxfczBldHJnX2RlX3BicXI=`.
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This was clearly Base64 encrypted, which can be said by terminating '='.
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#### Step-3:
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So, I tried at this URL and tried to decode the flag: https://www.base64decode.org/
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I got the following result:
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<img src="Base64.png">
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Decryption: `synt vf : a0_obql_s0etrg_de_pbqrgo`.
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I tried this as the flag, but unfortunately, it didn't work out. Now I thought that, this message itself could be encrypted and I got a sense of ROT13 there. If anyone is unaware of ROT13 encryption, they can check out here: https://en.wikipedia.org/wiki/ROT13
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#### Step-5:
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So for ROT13 decryption, I followed this URL: https://cryptii.com/.
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I got the following result:
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<img src="ROT13.png">
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Voila, we have it.
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#### Step-6:
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Finally the flag becomes:
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`n0_body_f0rget_qr_code` |