Rating:
# Beginner 1
### 50 points
When Bob and Jia were thrown into the world of cybersecurity, they didn't know anything- and thus were very overwhelmed. They're trying to make sure it doesn't happen to you.
Let's cover some bases first.
cnRjcHt5b3VyZV92ZXJ5X3dlbGNvbWV9
### Solution:
Get real used to CyberChef. First of all, it’s awesome and you should use it. Second..see the first point. Most of these challenges can be done by just using the “Magic” recipe. We’ll do it the right way for the sake of longwindedness.
From Base64 recipe.
### Flag:
rtcp{youre_very_welcome}
# Beginner 2
### 50 points
Bob wanted to let you guys know that "You might not be a complete failure."
Thanks, Bob.
72 74 63 70 7b 62 6f 62 5f 79 6f 75 5f 73 75 63 6b 5f 61 74 5f 62 65 69 6e 67 5f 65 6e 63 6f 75 72 61 67 69 6e 67 7d
Hint! Still covering bases here.
### Solution:
From Hex
### Flag:
rtcp{bob_you_suck_at_being_encouraging}
# Beginner 3
### 50 points
Fun fact: Jia didn't actually know what this was when they first started out. If you got this, you're already doing better than them ;-;
162 164 143 160 173 163 165 145 137 155 145 137 151 137 144 151 144 156 164 137 153 156 157 167 137 167 150 141 164 137 157 143 164 141 154 137 167 141 163 137 157 153 141 171 77 41 175
Hint! wow, these bases are getting smaller
### Solution:
From Octal
### Flag:
`rtcp{sue_me_i_didnt_know_what_octal_was_okay?!}`
# Beginner 4
### 50 points
Caesar was stabbed 23 times by 60 perpetrators... sounds like a modern group project
egpc{lnyy_orggre_cnegvpvcngr}
### Solution:
ROT13
### Flag:
rtcp{yall_better_participate}
# Beginner 5
### 50 points
beep boop
-- .- -. -.-- ..--.- -... . . .--. ... ..--.- .- -. -.. ..--.- -... --- --- .--. ...
Remember to wrap the flag in the flag format rtcp{something}
### Solution:
Oh shit….Morse code, too? CyberChef you sexy beast. From Morse Code
### Flag:
rtcp{MANY_BEEPS_AND_BOOPS}
# Beginner 6
### 50 points
i'm so tired...
26 26 26 26 26 26 26 26 19 12 5 5 16 9 14 7 9 14 16 8 25 19 9 3 19
*disclaimer: DON'T DO THIS KIDS. only sleep in math.
Remember to wrap the whole thing in the flag format rtcp{}
Hint! this isn't a hint; this is just us expressing our regret for taking 8AM physics
### Solution:
A1Z26_Cipher_Decode
### Flag:
rtcp{`zzzzzzzzsleepinginphysics}`
# Beginner 7
### 50 points
Don't go around bashing people.
igxk{fmovhh_gsvb_ziv_nvzm}
### Solution:
Team mate solved this one. Not sure how he got to it, but you need to swap Z with A, Y with B, etc. Use the “substitute” recipe and plaintext “abcdefghijklmnopqrstuvwxyz’ with the ciphertext “zyxwvutsrqponmlkjihgfedcba”. After writing the solution I did some research and its simply called an Atbash cipher, which is also in CyberChef.
### Flag:
rtcp{unless_they_are_mean}
# Beginner 8
### 50 points
You either mildly enjoy bacon, think it's a food of the gods, or are vegan/vegetarian.
00110 01110 00100 00000 10011 00101 01110 01110 00011 00011 01110 01101 10011 10010 10011 00000 10001 10101 00100
Remember to wrap the flag in rtcp{}
Hint! Make sure you use the "complete" alphabet.
### Solution:
Bacon Cipher Decode. You do need to change it from standard to complete. Or....just us Magic again.
### Flag:
rtcp{GOEATFOODDONTSTARVE}
# Beginner 9
### 50 points
Hope you've been paying attention! :D
Remember to wrap the flag with rtcp{}
Hint! we stan cyberchef in this household
### Solution:
This is where CyberChef really rocks. Chain a bunch of recipes together. Or in this case…
From Hex -> From Morse -> From Binary -> A1Z26 decode -> Substitution -> ROT
### Flag:
rtcp{NINEORONE}
