Crypto Challenge Messages and Hints

Author: AOrps

crypto/BlaiseDeCVE/README.md

@@ -8,3 +8,10 @@
 
 * Decoded text: Shellshock, also known as Bashdoor, is a family of security bugs in the Unix Bash shell. Shellshock could enable an attacker to cause Bash to execute arbitrary commands and gain unauthorized access to many Internet-facing services, such as web servers, that use Bash to process requests.flag is Shelldoyouwrong but put it in ctf format.
   Flag: jctf{Shelldoyouwrong}
+
+---
+
+## Challenge Message
+You receive a cryptic message leaving you shell-shocked. Your butler Alberto hands you a note that says “You'll need this **CVE-2014-6271** to find the key!” 
+
+He runs away while fresh hashbrowns fall out of his pockets. The rest is up to you.

crypto/HideInside/README.md

@@ -7,3 +7,13 @@
 * Open the file in a hex editor or use strings on the file to find the encoded flag. Use a base64 decoder to get the plain text flag
 'jctf{st3g_h1d3s_1n_pl@1n_s1ght}'
 
+---
+
+## Challenge Message
+
+You receive an image of the cityscape. You can’t seem to find any flags. It must be hidden inside somewhere...
+
+## Challenge Hints
+* Which do you prefer first – hex or base?
+
+* Don't see any flag flying in this city pic? Must be hidden behind the scenes.

crypto/StegAESaurus/README.md

@@ -11,3 +11,9 @@ a.	Use a spectrum analyzer like Sonic Visualizer on IGotTheKeys.wav = will show
 b.	Use a GIF parser on AlsoPartofKey58 to find the frame that has this code: 84cjFCDKC9D1gJ8sGZvW3r, then decode from Base 58
 c.	Use exiftool on Partofkey.jpg  to find “Bases of Eight” and 66 64 71 63 64 142 63 66 142 67 145 70 146 146 60 144, then decode from Octal to get 64934b36b7e8ff0d = second part of AES key
 d.	Put all of these together in CyberChef AES decoder using Hex input and Raw output (find this from trial and error) to get flag.
+
+
+---
+
+## Challenge Message
+A stegosaurus is rampaging through the city, but only destroying keys for some odd reason. Put all the key pieces together to crack this ciphertext!

crypto/Transformation/README.md

@@ -8,3 +8,10 @@
 * Use an Affinity cipher decoder (CyberChef has one) with the keys of a=3 and b=9
 Flag = jctf{@ff1n1ty_4_numb3rs}
 
+---
+
+## Challenge Message
+Do you have an affinity for math? Then you’ll easily crack this cipher! I used to crack these all the time back in my prime years...
+
+## Challenge Hints
+a = b / 3

crypto/XORED-Message/README.md

@@ -4,4 +4,13 @@
 
 
 ## Solution
-* Use cyberchef `XOR Brute Force`
+* Use cyberchef `XOR Brute Force`
+
+--- 
+
+## Challenge Message 
+SciXor left an encrypted message at your door. Use logic to crack the code!  
+
+## Challenge Hints
+* °° -> 0
+* ° -> 0

crypto/rail-fence/README.md

@@ -6,4 +6,12 @@
 * Run the text thru a railfence cipher 
 
 ## Resources
-* https://github.com/CrypTools/RailfenceCipher 
+* https://github.com/CrypTools/RailfenceCipher 
+
+---
+
+## Challenge Message
+You come up to a fence with an assortment of letters pasted on it. The flag must be somewhere on it. There must be some sort of pattern. Maybe you have to look at it from a different perspective. 
+
+## Challenge Hints
+* Did anyone say fence cipher?

crypto/rome-but-harder/README.md

@@ -8,3 +8,12 @@
 ## Solution
 * Cyberchef and cryptii
 `jctf{nice_did_you_like_the_flip_and_base64}`
+
+---
+
+## Challenge Message
+The previous rome challenge must have been too easy, so Ro-Man sent you another. A note with an even more cryptic message, the number 46 and a mirror. What could you possibly do with that? 
+
+## Challenge Hint
+* This may have given the emperor of Rome sound headaches, I can only pace forward and reverse, and probably have done it for at least 64 times.
+* Old time crypto with a modern spin!

crypto/rome/README.md

@@ -8,4 +8,12 @@
 
 ## Solution
 * Run the text thru a ceasar cipher
-`jctf{caesar_ciphers_are_pretty_litty}`
+`jctf{caesar_ciphers_are_pretty_litty}`
+
+---
+
+## Challenge Message
+While having your daily meal of hashbrowns, you come across a note that arrived in the mail. It has nothing but a cryptic message inside and is simply signed Ro-Man at the bottom. I wonder how you could possibly decipher this message...
+
+## Challenge Hints
+* Simple enough for an Emperor of Rome!