CODEWITHSUNDEEP
luadecompiling
phil294
phil294

Reputation: 10852

Decompiling lua

Here is a small (126 Bytes) example file called yeha.luac. Opened with my editor, it looks something like

LJB   4    >4   >G  get_object_baseget_ket4   1   5  G  $

But all decompilers give out errors. What can I do?

Upvotes: 1

Views: 2941

Answers (1)

Etan Reisner
Etan Reisner

Reputation: 80931

As those tools indicated that's not compiled lua bytecode.

Lua bytecode has a Lua tag in it.

$ echo | luac5.1 -o - - | cat -v; echo
^[LuaQ^@^A^D^H^D^H^@^G^@^@^@^@^@^@^@=stdin^@^@^@^@^@^@^@^@^@^@^@^B^B^A^@^@^@^^^@M-^@^@^@^@^@^@^@^@^@^@^A^@^@^@^A^@^@^@^@^@^@^@^@^@^@^@

That bytecode has an LJ tag. That is luajit bytecode.

$ echo | luajit -b -t raw - - | cat -v; echo
^[LJ^A^B^K^B^@^A^@^@^@^AG^@^A^@^@

Upvotes: 2

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