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Cyber Security
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University of Maryland University College
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Running head: ASSIGNMENT ON CAPTURE THE FLAG (CTF) CHALLENGES 1
Assignment on Capture the flag challenges
Student’s Name
Institution

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ASSIGNMENT ON CAPTURE THE FLAG (CTF) CHALLENGES 2
Section 1: The solves
Challenge 1.1
VU1HQy0xODMzNQ== checked on hash identifiers at
https://hashes.com/en/decrypt/hash got possible algorithms as base64 encoding scheme
Decoded it and found the answer to be UMGC-18335
Challenge 1.2
11000000.10101000.00010100.11111110
128+64 =192
8+32+128=168
4+16+=20
2+4+8+16+32+64+128 =254
192.168.20.254
Confirmed @
https://www.browserling.com/tools/bin-to-ip answer = 192.168.20.254
Challenge 1.3
55 4d 43 47 2d 38 30 38 30 is in hex format and should be converted to ASCII format
https://www.rapidtables.com/convert/number/hex-to-ascii.html
ASCII table @ http://www.asciitable.com/
Use hex to asci table answer = UMCG-8080

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Running head: ASSIGNMENT ON CAPTURE THE FLAG (CTF) CHALLENGES Assignment on Capture the flag challenges Student’s Name Institution 1 ASSIGNMENT ON CAPTURE THE FLAG (CTF) CHALLENGES Section 1: The solves Challenge 1.1 VU1HQy0xODMzNQ== checked on hash identifiers at https://hashes.com/en/decrypt/hash got possible algorithms as base64 encoding scheme Decoded it and found the answer to be UMGC-18335 Challenge 1.2 11000000.10101000.00010100.11111110 128+64 =192 8+32+128=168 4+16+=20 2+4+8+16+32+64+128 =254 192.168.20.254 Confirmed @ https://www.browserling.com/tools/bin-to-ip answer = 192.168.20.254 Challenge 1.3 55 4d 43 47 2d 38 30 38 30 is in hex format and should be converted to ASCII format https://www.rapidtables.com/convert/number/hex-to-ascii.html ASCII table @ http://www.asciitable.com/ Use hex to asci table answer = UMCG-8080 2 ASSIGNMENT ON CAPTURE THE FLAG (CTF) CHALLENGES 3 Challenge 1.4 Convert this to a dotted decimal notation IPv4 address: c7.c9.cc.22 It’s hex because octal doesn’t have letters c7=199 c9=201 cc=204 22=34 https://www.browserling.com/tools/hex-to-ip Answer = 199.201.204.34 Challenge 1.5 It requires crypto analysis In a Substitution cipher, any character of plain text from the given fixed set of characters is substituted by some other character from the same set depending on a key. For example with a shift of 1, A would be replaced by B, B would become C, and so on A substitution cipher is a simple "one-to-one" correlation be ...
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