Using unrar (or 7-Zip), extract the first part. The tool will automatically detect and join the subsequent parts.
[Describe what was found inside, e.g., "Extracted files included a text document containing the flag: FLAG... "] Key Techniques: Multipart RAR extraction, File forensics. If you can share: ChineseWhisper05.part2.rar
Identify file types (e.g., text, image, executable). Using unrar (or 7-Zip), extract the first part