python反编译luac_Lua程序逆向之为Luac编写IDA Pro处理器模块
时间: 2024-05-04 07:20:34 浏览: 216
在Python中,可以使用unluac模块来反编译luac_Lua程序。具体步骤如下:
1. 安装unluac模块。可以使用pip命令进行安装,命令如下:
```
pip install unluac
```
2. 编写Python脚本来调用unluac模块进行反编译。以下是一个简单的示例脚本:
```
import unluac
with open('test.luac', 'rb') as f:
data = f.read()
decompiled = unluac.decompile(data)
with open('test.lua', 'w') as f:
f.write(decompiled)
```
该脚本将test.luac文件反编译为test.lua文件。
3. 将反编译后的Lua代码导入到IDA Pro中。可以使用IDA Pro的Lua插件进行处理。
1. 在IDA Pro中,选择File -> Script file,打开Lua脚本窗口。
2. 在窗口中输入以下代码:
```
local f = io.open("test.lua", "r")
local content = f:read("*all")
f:close()
LoadSource(content, "test.lua")
```
3. 点击Run按钮,将Lua代码加载到IDA Pro中。
4. 编写IDA Pro处理器模块。可以使用IDA Pro的Python API编写处理器模块,对Lua代码进行分析和处理。以下是一个示例模块:
```
import idaapi
class LuaProcessor(idaapi.processor_t):
id = 0x8000 + 1
flag = idaapi.PR_USE32 | idaapi.PR_DEFSEG32
cnbits = 8
dnbits = 8
psnames = ["luac"]
plnames = ["Luac bytecode"]
segreg_size = 0
instruc_start = 0
assembler = {
"flag" : flag,
"uflag" : 0,
"name" : "Luac assembler",
"origin" : "luac",
"notify" : None,
"header" : None,
"footer" : None,
"segstart" : None,
"segend" : None,
"assume" : None,
"flag2" : 0,
"cmnt" : ";",
"ascsep" : '"',
"accsep" : "'",
"esccodes" : "\"'",
"a_ascii" : "db",
"a_byte" : "db",
"a_word" : "dw",
"a_dword" : "dd",
"a_qword" : "dq",
"a_oword" : "xmmword",
"a_float" : "dd",
"a_double" : "dq",
"a_tbyte" : "dt",
"a_packreal" : "dq",
"a_dups" : "#dups",
"a_bss" : "res",
"a_seg" : "seg",
"a_curip" : "$",
"a_public" : "public",
"a_weak" : "weak",
"a_extrn" : "extrn",
"a_comdef" : "comm",
"a_align" : "align",
"lbrace" : "(",
"rbrace" : ")",
"a_mod" : "%",
"a_band" : "&",
"a_bor" : "|",
"a_xor" : "^",
"a_bnot" : "~",
"a_shl" : "<<",
"a_shr" : ">>",
"a_sizeof_fmt" : "size %s",
}
def PROCESSOR_ENTRY():
return LuaProcessor()
```
该模块将Lua代码识别为Luac bytecode,并使用Luac assembler进行处理。
以上就是使用Python反编译luac_Lua程序并为其编写IDA Pro处理器模块的一般步骤。
阅读全文