Write-up | RITSEC CTF 2024

After the break-in to his lab Anthony found a suspicious new file on his desktop named README.txt. Anthony opened the file and found that it was a ransom demand from whomever stole his invention. Perhaps the contents of the ransom note contain a clue to the attacker’s identity.

README.txt

—–BEGIN BITCOIN SIGNED MESSAGE—–
Your invention has been taken.
If you ever want to see it again send 10 BTC to this address:

bc1qd7qtdayjnl382qmfl4tl4yaejuv5py0n3uwq6p

You have 3 days.
—–BEGIN BITCOIN SIGNATURE—–
H3zAMJyVW2j1+Y7A+w8wflZRUmggR+Sn532ZuAGtGLcxEERvymcPrtnXVkB+0mBqCUAb0AQwyPFJfGxvIeQDPpE=
—–END BITCOIN SIGNATURE—–

RS{26f9c2fcdfe8e86804eb}