Reverse – Vault door 8

Vault door 8 – 450pt Challenge Apparently Dr. Evil’s minions knew that our agency was making copies of their source code, because they intentionally sabotaged this source code in order to make it harder for our agents to analyze and crack into! The result is a quite mess, but I trust that my best specialContinua a leggere “Reverse – Vault door 8”

Reverse – Vault door 7

Vault door 7 – 400pt Challenge This vault uses bit shifts to convert a password string into an array of integers. Hurry, agent, we are running out of time to stop Dr. Evil’s nefarious plans! The source code for this vault is here: VaultDoor7.java Hints Use a decimal/hexademical converter such as this one: https://www.mathsisfun.com/binary-decimal-hexadecimal-converter.html YouContinua a leggere “Reverse – Vault door 7”

Reverse – Vault door 6

Vault door 6 – 350pt Challenge This vault uses an XOR encryption scheme. The source code for this vault is here: VaultDoor6.java Hints If X ^ Y = Z, then Z ^ Y = X. Write a program that decrypts the flag based on this fact. Solution Again, there’s a list of numbers meant toContinua a leggere “Reverse – Vault door 6”

Reverse – Vault door 5

Vault door 5 – 300pt Challenge In the last challenge, you mastered octal (base 8), decimal (base 10), and hexadecimal (base 16) numbers, but this vault door uses a different change of base as well as URL encoding! The source code for this vault is here: VaultDoor5.java Hints You may find an encoder/decoder tool helpful,Continua a leggere “Reverse – Vault door 5”

Reverse – Vault door 4

Vault door 4 – 250pt Challenge This vault uses ASCII encoding for the password. The source code for this vault is here: VaultDoor4.java Hints Use a search engine to find an "ASCII table". You will also need to know the difference between octal, decimal, and hexademical numbers. Solution There’s a list of numbers in theContinua a leggere “Reverse – Vault door 4”