mirror of
https://github.com/dobin/SuperMega
synced 2026-06-03 01:27:11 +00:00
Dobin
111 lines
3.0 KiB
Python
111 lines
3.0 KiB
Python
from typing import Dict
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import logging
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import pefile
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import pehelper
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logger = logging.getLogger("Model")
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class Capability():
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def __init__(self, name):
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self.name = name
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self.id: bytes = b""
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self.addr: int = 0
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def __str__(self):
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return "0x{:X}: {} ({})".format(
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self.addr,
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self.name,
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self.id
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)
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class ExeCapabilities():
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def __init__(self, capabilities):
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self.capabilities: Dict[str, Capability] = {}
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self.image_base = 0
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self.text_virtaddr = 0
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self.dynamic_base = False
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self.iat = {}
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self.base_relocs = []
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self.rwx_section = None
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for cap in capabilities:
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self.capabilities[cap] = Capability(cap)
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def parse_from_exe(self, filepath):
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pe = pefile.PE(filepath)
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if pe.FILE_HEADER.Machine != 0x8664:
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raise Exception("Binary is not 64bit: {}".format(filepath))
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# image base
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self.image_base = pe.OPTIONAL_HEADER.ImageBase
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# dynamic base / ASLR
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if pe.OPTIONAL_HEADER.DllCharacteristics & pefile.DLL_CHARACTERISTICS['IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE']:
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self.dynamic_base = True
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else:
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self.dynamic_base = False
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# .text virtual address
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for section in pe.sections:
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if section.Name.decode().rstrip('\x00') == '.text':
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self.text_virtaddr = section.VirtualAddress
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# iat
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iat = pehelper.extract_iat(pe)
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for _, cap in self.capabilities.items():
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cap.addr = pehelper.get_addr_for(iat, cap.name)
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self.iat = iat
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# relocs
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if hasattr(pe, 'DIRECTORY_ENTRY_BASERELOC'):
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for base_reloc in pe.DIRECTORY_ENTRY_BASERELOC:
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for entry in base_reloc.entries:
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entry_rva = entry.rva
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reloc_type = pefile.RELOCATION_TYPE[entry.type][0]
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self.base_relocs.append({
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'rva': entry_rva,
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'type': reloc_type,
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})
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# rwx
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self.rwx_section = pehelper.get_rwx_section(pe)
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def get(self, func_name):
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if not func_name in self.capabilities:
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return None
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if self.capabilities[func_name].addr == 0:
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return None
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return self.capabilities[func_name]
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def get_all(self) -> Dict[str, Capability]:
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return self.capabilities
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def has_all(self):
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needs = [ 'GetEnvironmentVariableW', 'VirtualAlloc']
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for need in needs:
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if not need in self.capabilities:
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return False
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if self.capabilities[need].addr == 0:
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return False
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return True
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def print(self):
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logger.info("--( Capabilities: ")
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for _, cap in self.capabilities.items():
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if cap.addr == 0:
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logger.info(" {:28} {}".format(cap.name, "N/A"))
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else:
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logger.info(" {:28} 0x{:x}".format(cap.name, cap.addr))
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