mobsf.mobsfscan.aes_encryption_keys.aes_hardcoded_key

rules:
  - id: aes_hardcoded_key
    patterns:
      - pattern-either:
          - pattern: |
              $S = new SecretKeySpec("...".getBytes(), "AES");
              ...
              $C.init(..., $S); 
          - pattern: |
              $P = "...";
              ...
              $S = new SecretKeySpec($P.getBytes(), "AES");
              ...
              $C.init(..., $S);
    message: Hardcoded encryption key makes AES symmetric encryption useless. An
      attacker can easily reverse engineer the application and recover the keys.
    languages:
      - java
    severity: ERROR
    metadata:
      cwe: cwe-321
      owasp-mobile: m5
      masvs: crypto-1
      reference: https://github.com/MobSF/owasp-mstg/blob/master/Document/0x04g-Testing-Cryptography.md#common-configuration-issues-mstg-crypto-1-mstg-crypto-2-and-mstg-crypto-3
      license: LGPL-3.0-or-later