91 lines
3.2 KiB
Python
91 lines
3.2 KiB
Python
import angr
|
||
import os
|
||
import shutil
|
||
from tqdm import tqdm
|
||
import pefile
|
||
def is_ELF_file(file_path):
|
||
"""
|
||
判断样本是否是ELF文件
|
||
:param file_path:样本文件路径
|
||
:return:是ELF文件返回True，否则返回False
|
||
"""
|
||
# 定义ELF文件的魔数
|
||
ELF_MAGIC_NUMBER = b'\x7fELF'
|
||
|
||
# 读取文件前几个字节
|
||
with open(file_path, 'rb') as f:
|
||
header = f.read(4)
|
||
|
||
# 判断文件是否为ELF文件
|
||
if header == ELF_MAGIC_NUMBER:
|
||
return True
|
||
else:
|
||
return False
|
||
|
||
|
||
def is_pe_file(file_path):
|
||
"""
|
||
判断样本是否是PE文件
|
||
:param file_path:样本文件路径
|
||
:return:是PE文件返回True，否则返回False
|
||
"""
|
||
try:
|
||
with open(file_path, 'rb') as f:
|
||
header = f.read(4)
|
||
pe = pefile.PE(file_path)
|
||
return True
|
||
except pefile.PEFormatError:
|
||
return False
|
||
|
||
def is_cfg(file_path):
|
||
try:
|
||
p = angr.Project(file_path, load_options={'auto_load_libs': False})
|
||
cfg = p.analyses.CFGFast(show_progressbar=True, normalize=False, resolve_indirect_jumps=False,
|
||
force_smart_scan=False, symbols=False, data_references=False)
|
||
G = cfg.graph
|
||
print(type(G))
|
||
if G is None:
|
||
return False
|
||
else:
|
||
return True
|
||
except Exception as e:
|
||
return False
|
||
|
||
|
||
class de_notcfg(object):
|
||
def __init__(self, sampleFile_dir, save_dir):
|
||
self.sampleFile_dir=sampleFile_dir
|
||
self.save_dir=save_dir
|
||
|
||
def notcfgfile_Filter(self):
|
||
|
||
for root, dirs, files in os.walk(self.sampleFile_dir):
|
||
# root:表示正在遍历的文件夹的名字（根 / 子）
|
||
# dirs:记录正在遍历的文件夹下的子文件夹集合
|
||
# files:记录正在遍历的文件夹中的文件集合
|
||
notexe_filelist = []
|
||
for file in tqdm(files):
|
||
try:
|
||
Samplefile_path = os.path.join(self.sampleFile_dir, file)
|
||
save_file = os.path.join(root, file)
|
||
pe_flag = is_pe_file(file_path=Samplefile_path)
|
||
elf_flag = is_ELF_file(file_path=Samplefile_path)
|
||
if (pe_flag is True) or (elf_flag is True):
|
||
cfg_flag = is_cfg(Samplefile_path)
|
||
if cfg_flag is True:
|
||
print(file + '该文件可以表征成cfg')
|
||
else:
|
||
shutil.copy(save_file, self.save_dir)
|
||
os.remove(Samplefile_path)
|
||
print(file + '不可表征成cfg，清洗文件保存在' + self.save_dir + '文件中，请查看')
|
||
else:
|
||
shutil.copy(save_file, self.save_dir)
|
||
os.remove(Samplefile_path)
|
||
print(file + "不是elf或PE文件，不可表征为cfg")
|
||
except PermissionError as e:
|
||
print(f"Argument Error: {e}")
|
||
|
||
if not os.listdir(root):
|
||
print("文件夹" + root + "为空，删除")
|
||
shutil.copy(root, self.save_dir)
|
||
os.rmdir(root) |