* @brief Vulnerable function containing buffer overflow * @param region Pointer to memory region structure */
| 155 | * @param region Pointer to memory region structure |
| 156 | */ |
| 157 | void vulnerable_function(memory_region_t *region) { |
| 158 | char local_buffer[64]; // Small local buffer |
| 159 | |
| 160 | const char *prompt = "[💀] Enter your exploit payload: "; |
| 161 | write(STDOUT_FILENO, prompt, strlen(prompt)); |
| 162 | |
| 163 | ssize_t bytes_read = read(STDIN_FILENO, region->data, MAX_INPUT); |
| 164 | |
| 165 | if (bytes_read > 0) { |
| 166 | char status_msg[128]; |
| 167 | int msg_len = snprintf(status_msg, sizeof(status_msg), |
| 168 | "[📥] Received %ld bytes at address %p\n", |
| 169 | bytes_read, region->data); |
| 170 | write(STDERR_FILENO, status_msg, msg_len); |
| 171 | } |
| 172 | |
| 173 | // Trigger callback if magic value matches |
| 174 | if (region->magic == MAGIC_VALUE && region->callback != NULL) { |
| 175 | write(STDOUT_FILENO, "[⚡] Executing callback function...\n", 35); |
| 176 | region->callback(region->data); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | /** |
| 181 | * @brief Cleanup resources |