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huhuang03, posted Mon May 28, 2018 2:16 pm (35353)

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I have dump the luac file by hook

Code:

 luaL_loadbuffer.

in libgame.so.
But it's custom luac file, so I cant' discompile it to lua. Can you help me? And what's the book for analysis so file skill?

The name of game is ????.

Updated on 2018-6-1:

I dump the wrong luac file which contains "REPLACEMENT CHARACTER". The right luac file is dump.zip. But I still can't decompiler it.

aluigi, posted Tue May 29, 2018 7:44 am (35375)

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Name of the game?

huhuang03, posted Wed May 30, 2018 1:43 am (35393)

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aluigi wrote:

Name of the game?

The name is ????

aluigi, posted Wed May 30, 2018 9:01 pm (35424)

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I guess I solved the mistery.
For some unknown reasons these LUA files use the sequence of bytes 0xef 0xbf 0xbd at the place of the 0x00 byte, that sequence of 3 bytes is indeed often used as an unicode "REPLACEMENT CHARACTER"

Open one of these lua files with a hex editor and use the "Replace" feature for replacing all the occurrencies of these 3 bytes with the byte 0x00.
Save the file and try a decompiler like http://sourceforge.net/projects/unluac/files/ on it.

huhuang03, posted Sat Jun 02, 2018 2:12 pm (35514)

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I have already solved this mistery.
Just use luadec to decomplier the luac file. Thank you!