learn gdb – Points: 300 Problem Statement Using a debugging tool will be extremely useful on your missions. Can you run this program in gdb and find the flag? You can find the file in shell server. Run the program. This takes some time. $ gdb run Decrypting the Flag into global variable ‘flag_buf’ ………………………………. […]
caesar cipher 2 – Points: 250 Problem Statement Can you help us decrypt this message? We believe it is a form of a caesar cipher. You can find the ciphertext in /problems/caesar-cipher-2_0_372a62ea0204b948793a2b1b3aeacaaa on the shell server. This is a follow up to my previous post. Message / Ciphertext ^WQ]1B4iQ/SaO@M1W>V3`AMXcABMO@3\BMa3QC`3k This time our charset is extended […]
caesar cipher 1 – Points: 150 Problem Statement This is one of the older ciphers in the books, can you decrypt the message? You can find the ciphertext in /problems/caesar-cipher-1_3_160978e2a142244574bd048623dba1ed on the shell server. Message / Ciphertext picoCTF{grpqxdllaliazxbpxozfmebotlvlicmr} Caesar cipher, also known as Caesar’s cipher, the shift cipher. It is an implementation of additive cipher […]
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