11 | Asc

gets → classic buffer overflow. No canary, PIE off → easy ret2win/ret2libc. Use gdb + pattern create (from pwntools or msf-pattern ):

void main(void) char buf[32]; setvbuf(stdout, NULL, 2, 0); puts("Input: "); gets(buf); // <-- vulnerable asc 11

objdump -d asc11 | grep -E "win|system|shell" If none, we need ret2libc. gets → classic buffer overflow

gdb ./asc11 r < <(python3 -c "print('A'*50)") Crash at RIP = 0x4141414141414141 → offset 40. Check if there’s a win or shell function: asc 11