diff options
| -rw-r--r-- | tools/sploit/sploit/payload.py | 64 |
1 files changed, 32 insertions, 32 deletions
diff --git a/tools/sploit/sploit/payload.py b/tools/sploit/sploit/payload.py index a7721e0..c916514 100644 --- a/tools/sploit/sploit/payload.py +++ b/tools/sploit/sploit/payload.py @@ -1,75 +1,75 @@ from sploit.arch import arch, itob from sploit.mem import Symtbl -class Payload(Symtbl): +class Payload: MAGIC = b'\xef' def __init__(self, **kwargs): - super().__init__(**kwargs) - self = self._namesp self.payload = b'' + self.sym = Symtbl(**kwargs) self.ctrs = {} def __len__(self): - return len(self._namesp.payload) + return len(self.payload) def __call__(self, badbytes=b''): - self = self._namesp found = [ hex(x) for x in set(self.payload).intersection(badbytes) ] if len(found) > 0: raise Exception(f'Payload: bad bytes in content: {found}') return self.payload - def __name(self, kind): - self = self._namesp + def _name(self, kind, sym): + if sym is not None: return sym try: ctr = self.ctrs[kind] except: ctr = 0 self.ctrs[kind] = ctr + 1 return f'{kind}_{ctr}' - def __append(self, value, sym): - setattr(self, sym, self.base + len(self)) - self._namesp.payload += value + def _append(self, value, sym): + setattr(self.sym.map(0), sym, len(self)) + self.payload += value return self - def __prepend(self, value, sym): - self.adjust(len(value)) - setattr(self, sym, self.base) - self._namesp.payload = value + self._namesp.payload + def _prepend(self, value, sym): + self.sym.adjust(len(value)) + setattr(self.sym.map(0), sym, 0) + self.payload = value + self.payload return self - def bin(self, value, sym=None): - return self.__append(value, sym or self.__name('bin')) + def bin(self, *values, sym=None): + return self._append(b''.join(values), sym=self._name('bin', sym)) - def str(self, value, sym=None): - return self.bin(value.encode()+b'\x00', sym or self.__name('str')) + def str(self, *values, sym=None): + values = [ v.encode() + b'\x00' for v in values ] + return self.bin(*values, sym=self._name('str', sym)) - def int(self, value, sym=None, signed=False): - return self.bin(itob(value, signed=signed), sym or self.__name('int')) + def int(self, *values, sym=None, signed=False): + values = [ itob(v, signed=signed) for v in values ] + return self.bin(*values, sym=self._name('int', sym)) - def ret(self, value, sym=None): - return self.int(value, sym or self.__name('ret')) + def ret(self, *values, sym=None): + return self.int(*values, sym=self._name('ret', sym)) - def sbp(self, value=None, sym=None): - if value is None: - return self.rep(self.MAGIC, arch.wordsize, sym or self.__name('sbp')) - return self.int(value, sym or self.__name('sbp')) + def sbp(self, *values, sym=None): + if len(values) == 0: + return self.rep(self.MAGIC, arch.wordsize, sym=self._name('sbp', sym)) + return self.int(*values, sym=self._name('sbp', sym)) def rep(self, value, size, sym=None): - return self.bin(self.__rep_helper(value, size), sym or self.__name('rep')) + return self.bin(self._rep_helper(value, size), sym=self._name('rep', sym)) def pad(self, size, value=None, sym=None): - return self.bin(self.__pad_helper(size, value), sym or self.__name('pad')) + return self.bin(self._pad_helper(size, value), sym=self._name('pad', sym)) def pad_front(self, size, value=None, sym=None): - return self.__prepend(self.__pad_helper(size, value), sym or self.__name('pad')) + return self._prepend(self._pad_helper(size, value), sym=self._name('pad', sym)) - def __rep_helper(self, value, size, *, explain=''): + def _rep_helper(self, value, size, *, explain=''): if size < 0: raise Exception(f'Payload: {explain}rep: available space is negative') if (size := size / len(value)) != int(size): raise Exception(f'Payload: {explain}rep: element does not divide the space evenly') return value * int(size) - def __pad_helper(self, size, value): - return self.__rep_helper(value or arch.nopcode, size - len(self), explain='pad: ') + def _pad_helper(self, size, value): + return self._rep_helper(value or arch.nopcode, size - len(self), explain='pad: ') |