根据您的需求,实现DWARF调试信息的读取和Ghidra脚本开发,以提取未剥离二进制函数的变量名、形参名及类型,并生成三元组。同时还需要提取函数间调用关系和函数安全描述,并将生成的三元组存入neo4j中。以下是一个简单的示例代码,使用Python语言结合Ghidra进行实现:
from ghidra.app.decompiler import DecompileOptions, DecompInterface
from ghidra.program.model.symbol import SourceType
def extract_variables_and_parameters(function):
symbol_table = function.getProgram().getSymbolTable()
variables = []
# 提取变量名、类型和作用域
local_vars = function.getLocalVariables()
for var in local_vars:
var_name = var.getName()
var_type = var.getDataType().getName()
var_scope = symbol_table.getNamespace(var).getName()
variables.append((var_name, var_type, var_scope))
# 提取形参名和类型
parameters = []
params_info = function.getParameters()
for param in params_info:
param_name = param.getName()
param_type = param.getDataType().getName()
parameters.append((param_name, param_type))
return variables, parameters
def extract_function_calls(program):
call_graph = {}
functions = program.getFunctionManager().getFunctions(True)
for function in functions:
called_functions = set()
references_from_instructions = program.getReferenceManager().getFlowReferencesFrom(function.getBody())
for ref in references_from_instructions:
if ref.getReferenceType().isCall():
called_function_entry_point_address = ref.getToAddress()
called_function = program.getFunctionManager().getFunctionAt(called_function_entry_point_address)
if called_function is not None:
called_functions.add(called_function.getName())
call_graph[function.getName()] = list(called_functions)
return call_graph
def generate_triples(variables, parameters, function_calls):
triples = []
for func_name, func_call_list in function_calls.items():
for called_func_name in func_call_list:
triples.append((func_name, "函数调用", called_func_name))
for var_name, var_type, var_scope in variables:
triples.append(("全局变量", var_name + ": " + var_type, var_scope))
for param_name, param_type in parameters:
triples.append(("形参", param_name + ": " + param_type, ""))
return triples
def save_to_neo4j(triples):
# 将三元组存入neo4j数据库中的代码逻辑,请根据实际情况进行编写
pass
# 主程序
def main():
# 初始化Ghidra反编译接口
decompiler_options = DecompileOptions()
decompiler_interface = DecompInterface()
try:
binary_path = "/path/to/your/binary" # 替换为您的二进制文件路径
decompiler_interface.openProgram(binary_path)
program = decompiler_interface.getProgram()
functions = program.getFunctionManager().getFunctions(True)
all_variables = []
all_parameters = []
function_calls = {}
for function in functions:
variables, parameters = extract_variables_and_parameters(function)
all_variables.extend(variables)
all_parameters.extend(parameters)
call_graph_entry = {function.getName(): []}
function_calls.update(call_graph_entry)
# 提取函数间调用关系
function_calls = extract_function_calls(program)
# 生成三元组
triples = generate_triples(all_variables, all_parameters, function_calls)
# 存储到neo4j数据库中
save_to_neo4j(triples)
finally:
decompiler_interface.dispose() # 确保释放资源
if __name__ == "__main__":
main()
请注意,以上代码只提供了一个简单的示例,具体实现可能需要根据您的需求进行适当调整和完善。另外,请确保已正确配置Ghidra环境,并安装相应的Python依赖库。对于将三元组存入Neo4j数据库中的操作,请根据实际情况编写相应的代码逻辑。
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