He downloaded a popular tool— John the Ripper . He ran a simple dictionary attack using a Hindi-English wordlist. Hours passed. The fan on his laptop whirred like an angry bee. Nothing.
"Rohan, if you're watching this, you finally cracked the code—but not with a tool. With your brain. That's the lesson. There is no 'tode' (break) for a good password. Only 'samajh' (understanding). Now, here's the real project I left for you..."
Then, he tried a mask attack: guessing the password structure. "Maybe a date?" he thought. "06051997" (Arjun’s graduation). No. "Mother's name"? No.
Here is a short, fictional story exploring that theme.
Rohan thought about it. His brother was paranoid about cybersecurity. He never trusted "recovery tools." Then it hit him—Arjun loved steganography. He didn't set random passwords. He hid them.
It sounds like you're asking for a story based on the Hindi phrase (How to break a RAR file password).
Still, he had to try.