問題文に書いてある flag を入力します
Binary is a numbering system where that uses only two characters: 1s and 0s. At the lowest level of logic, this is the language spoken by computers (in the form of high and low electrical signals).I was going to give you the flag, but it got converted to binary. Can you help me bring it back? 01001101 01100101 01110100 01100001 01000011 01010100 01000110 01111011 01101100 01100001 01101110 01100111 01110101 01100001 01100111 01100101 01011111 01101111 01100110 01011111 01101110 01100101 01110010 01100100 01110011 01111101
cyberchef で OK
You need to urgently log into the facility admin portal to reactivate the security system.Can you figure out a way to login?
通信を見るとパスワードを比較する js ファイルが見える． この比較部分がモロに出ているので flag として出す
Julius Caesar is wanting to relay some vital information to his front line troops. He sent this message: ZrgnPGS{napvrag_pvcuref_sgj).
Caesar暗号で OK
During a breach investigation, you find an odd file: C:\Windows\Temp\abc.xyz that was created while a threat actor was accessing the system.That file type doesn’t seem right…can you figure out what kind of file this is and if there’s anything interesting in it?
file コマンドで zip だと分かるので unzip
We sniffed some network traffic from a suspect computer, can you extract the flag from it?
`GET /flag.txt HTTP/1.1 Host: 172.17.0.3 User-Agent: curl/7.81.0 Accept: /
HTTP/1.0 200 OK Server: SimpleHTTP/0.6 Python/3.10.6 Date: Fri, 05 May 2023 13:41:26 GMT Content-type: text/plain Content-Length: 40 Last-Modified: Fri, 05 May 2023 13:38:56 GMT
MetaCTF{0bjectiv3ly_subj3ctive_p4ckets}`
How strange. This binary won’t run on any of my computers. What kind of system was it built for? The answer is not in flag format; rather, it’s just the name of the architecture this program is meant to run on. You don’t need to run the program. Note that you only have 5 attempts on this challenge.
file コマンド