Date: 20, December, 2020
Author: Dhilip Sanjay S
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Download the pcap file and run tshark.
tshark -r Data.pcapng -T fields -e data.text | grep . > output.txt
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Filter the new lines. The obtained string is Base64 encoded:
VGhlIGZsYWcgaXMtPiBCMXRfYnlfQjF0X3YxYV9uYwo=
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Base64 decode the text to obtain the flag.
root@kali: echo VGhlIGZsYWcgaXMtPiBCMXRfYnlfQjF0X3YxYV9uYwo= | base64 -d The flag is-> B1t_by_B1t_v1a_nc