Cyber Security Lab

Secret Decoder

A software engineer left a “secret decoder” program on an old USB drive. When you run it, it asks for a password. The password is hidden inside the program in an obfuscated form. Can you analyze the program and reveal the hidden flag?


Flag Format: BUBT-CTF{***}
Click Here to Download... (103 downloads )
Hint:

-Analyze the program with strings or a disassembler.
-Observe the obfuscated password array: encoded[].
-Reverse the logic: each character in the password is encoded[i] - 2.
-Strings may be partially visible inside the binary.
-Tools: strings, Ghidra, IDA Free, or Python scripts.

Enter your flag

Please enter the correct flag below. Make sure there are no extra spaces!

Flags are checked regardless of capitalisation: IWin is the same as iwin.