Anti-cracking technology in Ghost artifact-gamekiller (Appendix: 2.60 free of registration Edition)

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On the Registration Information Page, IMEI and imsi are displayed as blacklist, which is caused by my negligence and does not affect usage.If there are other bugs in the free registration edition, comment below.

The anti-cracking methods listed below are used in the hacker artifact. For more information about anti-cracking techniques for other software, see
Http://blog.csdn.net/coolypf/article/details/7832823

1. Anti-Reverse AnalysisObfuscation of JavaCodeAnd the encryption modifier Core Engine gamekillerengine.
2. Anti-registration serverUse RSA to encrypt the registration file.
3. Prevent classes. Dex ModificationUse the file size and CRC32 value of classes. Dex to decrypt gamekillerengine, and check the size of classes. DEX and CRC32 in gamekillerengine.
4. Anti-Dalvik-Cache patchUse dexfile. loaddex to generate odex and compare it with Dalvik-cache.
5. Constant EncryptionKey constants and strings cannot be searched directly in the decrypted gamekillerengine file, such as the file size and CRC32 value of classes. Dex, and "/data/Dalvik-Cache.

Shows some key anti-cracking code in the gamekillerengine of the modifier Core Engine: