Cocos2d JSC: Difference between revisions
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=== Notes and Comments === | === Notes and Comments === | ||
* This file format occurs in games made using '''Cocos2d-x''' | * 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 is a compiled '''JavaScript''' file used by '''[https://en.wikipedia.org/wiki/SpiderMonkey SpiderMonkey Engine]'''. | ||
* JSC may be compressed with '''GZIP / | * JSC may be compressed with '''GZIP / ZIP''' and encrypted with '''XXTEA'''. | ||
=== Games === | === Games === | ||
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| Animal Restaurant || Android || *.JSC || XXTEA + GZIP || 431FEWJOTe-gecTW | | 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 | | Brutal Street 2 || Android || *.JSC || Bytecode (version 33) || None | ||
|- | |||
| Cat Rescue: Sea Escape || Android || *.JSC || XXTEA + GZIP || 863c18da-7a0f-41 | |||
|- | |- | ||
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| LifeSimulator - Chinese Life || Android || *.JSC || XXTEA + GZIP || e07a4d47-b82e-4f | | LifeSimulator - Chinese Life || Android || *.JSC || XXTEA + GZIP || e07a4d47-b82e-4f | ||
|- | |||
| Math Pipes Agilidad mental<br> operaciones matemáticas || Android || *.JSC || XXTEA + GZIP || 967d48e5-4124-4e | |||
|- | |- | ||
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| One Piece (chinese game) || Android || *.JSC || XXTEA + GZIP || b81a1dd7-625d-43 | | 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 | | Spiral Warrior || Android || *.JSC || XXTEA Only || f86f2406-6ef3-45 | ||
|- | |||
| Toilet Paper Rush || Android || *.JSC || XXTEA + GZIP || 715c2582-9ae7-4e | |||
|- | |- | ||
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'''Method 1:''' | '''Method 1:''' | ||
* Open file \lib\armeabi-v7a\libcocos2djs.so in hex editor and search for "jsb-adapter | * 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:''' | '''Method 2:''' | ||
* Install and run frida server on your device | * Install and run frida server on your device | ||
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* [https://platinmods.com/threads/tool-encryption-decryption-jsc-files-to-modded-games-based-cocos2djs.132148/ JSC decrypt tool (by Mika Cybertron)] | * [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/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://archive.org/download/jsc-tool/jsc%20Tool.rar JSC Tool] | ||
* [https://github.com/irelance/jsc-decompile-mozjs-34 jsc-decompile-mozjs-34] | * [https://github.com/irelance/jsc-decompile-mozjs-34 jsc-decompile-mozjs-34] | ||
| Line 117: | Line 142: | ||
* [https://www.modb.pro/db/240817 How to decompile JSC files (chinese tutorial)] | * [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://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 === | ||
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[[Category:Complete Complete|Cocos2d | [[Category:Complete Complete|Cocos2d JSC]] | ||
[[Category:Platform Android|Cocos2d | [[Category:Platform Android|Cocos2d JSC]] | ||
[[Category:CE Both|Cocos2d | [[Category:CE Both|Cocos2d JSC]] | ||
[[Category:Format_Misc | Type: Misc]] | [[Category:Format_Misc | Type: Misc]] | ||
[[Category:Extension_jsc | Extension: jsc]] | [[Category:Extension_jsc | Extension: jsc]] | ||
[[Category:GZIP compression]] | [[Category:GZIP compression]] | ||
[[Category:XXTEA encryption]] | [[Category:XXTEA encryption]] | ||
[[Category:File Format]] | [[Category:File Format]] | ||
Latest revision as of 21:34, 6 September 2022
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JSC, JS
- Format Type : Compiled Script
- Endian Order : Little Endian
- Signature : None
Format Specifications
x bytes - file data // it may be encrypted or compressed
Notes and Comments
- This file format occurs in games made using Cocos2d-x / Cocos Creator.
- JSC is a compiled JavaScript file used by SpiderMonkey Engine.
- JSC may be compressed with GZIP / ZIP and encrypted with XXTEA.
Games
List of games using this file format:
| 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 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 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
Compatible Programs
- cocos2d-x + cocos2d-x-samples
- cocos2d-jsc-decompiler
- cocos-jsc-endecryptor
- cocos2d/Spidermonkey
- Frida Server + cocos2d_xxtea_script.js
- JSC decrypt tool (by Mika Cybertron)
- JSC-PyDecrypt-Tool
- jsc-Decryption
- JSC Tool
- jsc-decompile-mozjs-34
- Winrar / 7-zip (only for GZIP decompression)
See Also
- How to find decrypt key for cocos2djs?
- How to find decryption key for cocos2djs
- How to decompile JSC files (chinese tutorial)
- Road to decompile JSC (chinese tutorial)
- Cocos2d JS mobile game decryption jsc
- Build and release Cocos2d games on Native platforms
Gallery
-
JSC Tool by Mika Cybertron
