Roses are Red
Violets are Blue
What is in this Vault
Is not meant for you
1 month ago
The ROT I used is for all the printable ascii characters 32 through 126. For this challenge you have to find the encrypted (rotated) flag that starts with CTFlearn and then you have to brute force the shift, it is not 47. Also don't forget if I encrypted with +n you have to decrypt with -n.
You have to brute force the amount of the ROT... how did you get 77? Don't forget that if I used a + rot value to encode, you have to use a - value to decode for ROT.
2 months ago
Analyze the bytes following the 0xffd9 marker which is the original jpeg end of file marker. Use the hints to learn how to extract the flag from the bytes.
Can't get my head around it. Feels like round robin hey
Run the Jpeg1.py script and note the offset to the 0xffd9 marker for end of file. Then look at the size of the jpeg on disk.
Very unique challenge :)