|link| | 2fa.fbrip

printf("Enter your username: "); fgets(user, sizeof(user), stdin);

Instead, we need to without the extra increment. The pointer rdx is advanced 8 bytes per iteration ( add rdx, 8 ). After six iterations it points exactly at the magic constant. Therefore the comparison will always happen – we cannot avoid it.

Below is the full walk‑through that led to the flag. 2fa.fbrip

: A code is sent directly to your mobile phone.

$ strace -e read,write ./fbrip ... write(1, "Enter your username: ", 22) = 22 read(0, "admin\n", 6) = 6 write(1, "Enter your password: ", 22) = 22 read(0, "p@ssw0rd\n", 9) = 9 write(1, "Enter your 2FA code: ", 21) = 21 read(0, "000000\n", 7) = 7 ... Therefore the comparison will always happen – we

Thus the correct username/password pair is:

"Ripped" accounts are generally aged. An aged account has a higher trust score within social media ecosystems, allowing for higher daily ad spends and more aggressive outreach without immediate suspension. $ strace -e read,write

TABLE = [ 0xa15b3c9d6e1f2a4b, 0x075c2d3e8fa0b1c2, 0xd3e4f5061728394a, 0x5b6c7d8e9fa0b1c2, 0xd3e4f5061728394a, 0x5b6c7d8e9fa0b1c2, ]

You enter this secret key into a 2FA generator.