def _add_vmt_methods(bv: BinaryView, vmt: DelphiVMT, out_struct: types.Structure) -> bool:
offset_ptr_size = vmt.offset_ptr_size
if not vmt.seek_to_vmt_offset(vmt.vmt_offsets.cVmtParent + offset_ptr_size):
return False
for _ in range(len(vmt.virtual_methods)):
value = vmt.read_ptr()
if value == 0:
continue
if value not in vmt.virtual_methods:
prev_offset = vmt.br_offset - offset_ptr_size
raise RuntimeError(
f'Invalid method address detected at 0x{prev_offset:08x} ({vmt.class_name})')
# Create function if not exists
if bv.get_function_at(value) is None:
bv.create_user_function(value)
function = bv.get_function_at(value)
# Set method name if not already set
function_name = function.name
method_name = vmt.virtual_methods[value]
if function_name.startswith('sub_'):
bv.define_user_symbol(Symbol(
SymbolType.FunctionSymbol,
value,
method_name
))
# Add field to structure
field_type = Type.pointer(
bv.arch,
Type.function(
function.return_type,
[(Type.void() if x.type is None else x.type) for x in function.parameter_vars],
function.calling_convention
)
)
field_name = method_name.split('.')[-1]
out_struct.append(field_type, field_name)
return True
)
if sign_bit:
full_width_value |= full_width_mask ^ ((1 << ((size + offset) * 8)) - 1)
self._state.regs[full_width_reg] = full_width_value
if __name__ == '__main__':
bv = BinaryView()
# bv.write(0, b'\x89\xd8\x90\x90\x90')
# bv.write(0, b'\xb8\x01\x00\x00\x00')
bv.write(0, b'\x01 \xa0\xe3')
# bv.platform = Architecture['x86'].standalone_platform
bv.platform = Architecture['armv7'].standalone_platform
bv.create_user_function(0)
bv.update_analysis_and_wait()
function = bv.get_function_at(0)
emu = InstructionEmulator(bv, {'r2': 1337})
print(emu._state.regs)
emu.execute(function.llil[0])
print(emu._state.regs)
