View source for Cocos2d JSC

{{GRAFPageHeader}}
== JSC, JS == 

* ''' Format Type ''':    Compiled Script <br> 
* ''' [http://en.wikipedia.org/wiki/Endianness Endian Order] ''': Little Endian <br>
* ''' Signature ''':    None <br> 


=== Format Specifications === 

<div class="toccolours mw-collapsible" id="mw-customcollapsible-myDivision" style="width:800px; overflow:auto;">
<pre>
x bytes - file data  // it may be encrypted or compressed
</pre>
</div>

=== Notes and Comments === 

* This file format occurs in games made using '''Cocos2d-x''' / '''Cocos Creator'''.
* JSC is a compiled '''JavaScript''' file used by '''[https://en.wikipedia.org/wiki/SpiderMonkey SpiderMonkey Engine]'''.
* JSC may be compressed with '''GZIP / ZIP''' and encrypted with '''XXTEA'''.

=== Games === 
List of games using this file format:

{| class="wikitable sortable"
|- 
!     Game Title                                    !! Platform        !! Extension     !! Type            !! Encryption Key
|-


|     Animal Restaurant                             || Android         || *.JSC         || XXTEA + GZIP     || 431FEWJOTe-gecTW
|-


|     Aries Peg Solitaire                           || Android         || *.JSC         || XXTEA + ZIP     || 097c5192-4e62-4f
|-


|     Brutal Street 2                               || Android         || *.JSC         || Bytecode (version 33)     || None
|-


|     Cat Rescue: Sea Escape                        || Android         || *.JSC         || XXTEA + GZIP              || 863c18da-7a0f-41
|-


|     Choang Club - Game bai dang cap               || Android         || *.JSC         || Bytecode (version 33)     || None
|-


|     DesignVille: Merge & Design                   || Android         || *.JS          || Uncompiled JavaScript         || None
|-


|     Happy Animal Hospital                         || Android         || *.JSC         || XXTEA + GZIP                  || dwyygp
|-


|     Jimi-Kare My Quiet Boyfriend                  || Android         || *.JSC         || Bytecode (version 33)     || None
|-


|     KungFu Hospital                               || Android         || *.JSC         || XXTEA + GZIP     || yiguangp
|-


|     LifeSimulator - Chinese Life                  || Android         || *.JSC         || XXTEA + GZIP    || e07a4d47-b82e-4f
|-


|     Math Pipes Agilidad mental<br> operaciones matemáticas        || Android         || *.JSC         || XXTEA + GZIP    || 967d48e5-4124-4e
|-


|     Minimal Dungeon RPG                           || Android         || *.JSC         || XXTEA + GZIP    || 0144fe29-6a3f-49
|-


|     One Piece (chinese game)                      || Android         || *.JSC         || XXTEA + GZIP     || b81a1dd7-625d-43
|-


|     Resortopia                                    || Android         || *.JSC         || XXTEA + GZIP     || 65fccf9c-1473-4d
|-


|     Santa Bouncy Lights                           || Android         || *.JSC         || XXTEA + GZIP     || 7820d0b2-c505-4b
|-


|     Spiral Warrior                                || Android         || *.JSC         || XXTEA Only       || f86f2406-6ef3-45
|-


|     Toilet Paper Rush                             || Android         || *.JSC         || XXTEA + GZIP     || 715c2582-9ae7-4e
|-


|     Top War: Battle Game                          || Android         || *.JSC         || XXTEA + GZIP     || 221640c9-d86d-43
|-



|}

=== Tutorial - How to get XXTEA keys === 

'''Method 1:''' 
* Open file \lib\armeabi-v7a\libcocos2djs.so in hex editor and search for "jsb-adapter". Key should be stored right before this string.
'''Method 2:''' 
* Install and run frida server on your device
* Download this script [https://github.com/bartlomiejduda/Tools/blob/master/NEW%20Tools/Cocos2d/cocos2d_xxtea_script.js cocos2d_xxtea_script.js]
* Run the script with the command "frida -U --no-pause -l cocos2d_xxtea_script.js -f <game_package_name>
'''Method 3:'''
* Download and install IDA 7
* Seaach for function "xxtea_decrypt"
* Analyse the function's code to see how the key is stored/generated.

=== QuickBMS Script === 

* [https://zenhax.com/viewtopic.php?p=48103#p48103 One Piece JSC script]

=== Compatible Programs === 

* [https://github.com/cocos2d/cocos2d-x cocos2d-x] + [https://github.com/cocos2d/cocos2d-x-samples cocos2d-x-samples]
* [https://github.com/takaaptech/cocos2d-jsc-decompiler cocos2d-jsc-decompiler]
* [https://github.com/OEDx/cocos-jsc-endecryptor cocos-jsc-endecryptor]
* [https://github.com/cocos2d/Spidermonkey cocos2d/Spidermonkey]
* [https://frida.re/docs/installation/ Frida Server] + [https://github.com/bartlomiejduda/Tools/blob/master/NEW%20Tools/Cocos2d/cocos2d_xxtea_script.js cocos2d_xxtea_script.js]
* [https://platinmods.com/threads/tool-encryption-decryption-jsc-files-to-modded-games-based-cocos2djs.132148/ JSC decrypt tool (by Mika Cybertron)]
* [https://github.com/bartlomiejduda/JSC-PyDecrypt-Tool JSC-PyDecrypt-Tool]
* [https://github.com/Mas0nShi/jsc-Decryption jsc-Decryption]
* [https://archive.org/download/jsc-tool/jsc%20Tool.rar JSC Tool]
* [https://github.com/irelance/jsc-decompile-mozjs-34 jsc-decompile-mozjs-34]
* Winrar / 7-zip  (only for GZIP decompression)

=== See Also ===

* [https://modgame.cc/how-to-find-decrypt-key-for-cocos2djs/ How to find decrypt key for cocos2djs?]
* [https://platinmods.com/threads/how-to-find-decryption-key-for-cocos2djs.134414/ How to find decryption key for cocos2djs]
* [https://www.modb.pro/db/240817 How to decompile JSC files (chinese tutorial)]
* [https://zhuanlan.zhihu.com/p/42403161 Road to decompile JSC (chinese tutorial)]
* [https://programmer.ink/think/61c66dfa65368.html Cocos2d JS mobile game decryption jsc]
* [https://docs.cocos.com/creator/2.3/manual/en/publish/publish-native.html Build and release Cocos2d games on Native platforms]

=== Gallery ===
<gallery bordercolor="transparent" spacing="small" orientation="landscape">
jsc_encryption_tool.png|JSC Tool by Mika Cybertron
</gallery>
<br/><br>


[[Category:Complete Complete|Cocos2d JSC]]
[[Category:Platform Android|Cocos2d JSC]]
[[Category:CE Both|Cocos2d JSC]]
[[Category:Format_Misc | Type: Misc]]
[[Category:Extension_jsc | Extension: jsc]]
[[Category:GZIP compression]]
[[Category:XXTEA encryption]]
[[Category:File Format]]