Plugin Burpsuite per il cracking di AES

0x00 mvn install per ottenere il jar

git clone https://github.com/jas502n/Burp_AES_Plugin/

cd ~/github/Burp_AES_Plugin/AESDecode

vi src/main/java/burp/BurpExtender.java

mvn install

[INFO] --- maven-install-plugin:2.4:install (default-install) @ AESCrack ---
[INFO] Installing /root/github/Burp_AES_Plugin/AESDecode/target/AESCrack-1.0-SNAPSHOT.jar to /root/.m2/repository/com/jas502n/AESCrack/1.0-SNAPSHOT/AESCrack-1.0-SNAPSHOT.jar
[INFO] Installing /root/github/Burp_AES_Plugin/AESDecode/pom.xml to /root/.m2/repository/com/jas502n/AESCrack/1.0-SNAPSHOT/AESCrack-1.0-SNAPSHOT.pom
[INFO] Installing /root/github/Burp_AES_Plugin/AESDecode/target/AESCrack-1.0-SNAPSHOT-jar-with-dependencies.jar to /root/.m2/repository/com/jas502n/AESCrack/1.0-SNAPSHOT/AESCrack-1.0-SNAPSHOT-jar-with-dependencies.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  3.627 s
[INFO] Finished at: 2020-06-18T00:17:09+08:00
[INFO] ------------------------------------------------------------------------

0x02 Ricerca di riferimenti e creazione della propria soluzione

Come scrivere il proprio plugin Burp Suite https://t0data.gitbooks.io/burpsuite/content/chapter16.html

Sviluppare un'estensione BurpSuite per il brute force su una piattaforma https://gorgias.me/2017/03/29/%E5%BC%80%E5%8F%91BurpSuite%E6%89%A9%E5%B1%95%E7%88%86%E7%A0%B4%E6%9F%90%E5%B9%B3%E5%8F%B0/

Burpsuite API Javadoc https://portswigger.net/burp/extender/api/

Il plugin AesDecode scritto da CoolCat supporta la crittografia e la decrittografia dalla pagina di menu e il brute force https://github.com/TheKingOfDuck/ https://blog.gzsec.org/archives/

jsEncrypter di c0ny1 https://github.com/c0ny1/jsEncrypter

0x03 Creare un nuovo progetto Maven con IDEA e aggiungere le dipendenze in pom.xml

    <dependencies>
        <!-- https://mvnrepository.com/artifact/net.portswigger.burp.extender/burp-extender-api -->
        <dependency>
            <groupId>net.portswigger.burp.extender</groupId>
            <artifactId>burp-extender-api</artifactId>
            <version>1.7.22</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
            </plugin>
        </plugins>
    </build>

0x04 Creare un nuovo pacchetto denominato burp, la classe Java BurpExtender e implementare il metodo di crittografia AES

IBurpExtender: ufficialmente è obbligatorio implementarla

IIntruderPayloadProcessor: poiché ci serve soltanto la funzione di brute force di Intruder, dobbiamo implementarla

public class BurpExtender implements IBurpExtender, IIntruderPayloadProcessor {
    private static IExtensionHelpers helpers;
    public final static String extensionName = "AESCrack"; // 插件名称
    public final static String version = "1.0";
    public final static String AES_IV = "1234567812345678"; // 设置 AES IV 值
    public final static String AES_KEY = "key12345key67890"; // 设置 AES KEY 值

encryptAES (imposta il valore IV di AES)

    public static String encryptAES(String paramString1, String paramString2)
            throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, UnsupportedEncodingException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
        SecretKeySpec key = new SecretKeySpec(paramString2.getBytes(), "AES");
        IvParameterSpec iv = new IvParameterSpec("your-iv-value".getBytes()); //set iv
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(1, key, iv);
        return helpers.base64Encode(cipher.doFinal(paramString1.getBytes()));
    }

Metodo processPayload (imposta la chiave AES)

    public byte[] processPayload(byte[] currentPayload, byte[] originalPayload, byte[] baseValue) {
        String dataParameter = helpers.bytesToString(currentPayload);
        String AesEncodeStr = null;
        try {
            AesEncodeStr = encryptAES(dataParameter, "your-aes-key"); //set aes key
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (InvalidAlgorithmParameterException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return helpers.stringToBytes(AesEncodeStr);
    }

0x05 Compilare il progetto Maven con IDEA

Come compilare un progetto Maven con Intellij-idea https://blog.csdn.net/u013044029/article/details/71681891

Compilazione ed esecuzione riuscite: nella directory target si ottiene il file aes.jar

Uno senza dipendenze (file piccolo) AESCrack-1.0-SNAPSHOT.jar Uno con dipendenze (file grande) AESCrack-1.0-SNAPSHOT-jar-with-dependencies.jar

Quando Burpsuite carica il plugin, basta usare quello senza dipendenze: AESCrack-1.0-SNAPSHOT.jar

Burp_AES_Plugin

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