dump_memory(filename,start,size)
filename='E:\\2016LearnReverse\\runChangeDalvik\\dexdump'
start=0x74F35000
size=0x78000
def dump_memory(filename,start_add,size):
fd=open(filename,"wb")
for i in range(0,size,4):
ea=start_add+i
buf=idaapi.dbg_read_memory(ea,4)
fd.write(buf)
fd.close()