Chinese People's Public Security University
Chinese people’ public security university
Network Warfare Technology
experimental report
| Third experiment |
| Password cracking techniques |
| student name |
Wu Meng Zhe |
| grade |
2017 |
| District Team |
six |
| mentor |
Your opinion |
Information and Network Security Technology College
201 9 Nian 12 Yue 9 Ri
Experimental Task Master
20 1 9 -20 20 grade Dai Ichi semester
First, the purpose of the experiment
1 . Deepen and digest this course lectures, review what they have learned through the Internet search techniques , methods and techniques ;
2 . Become familiar with commonly used encryption algorithm, encryption and decryption tools, tools and other resources to crack the Internet , for a given ciphertext, encrypted file system password to crack ;
3 . The purpose of the consolidation of curriculum knowledge and practical application.
Second, the experimental requirements
1 . Carefully read the contents of each experiment, we need to capture the title, to be clear screenshots and annotate screenshots and descriptions.
2 . Documentation requirements clearly structured , graphic expression accurate labeling specifications. Reasoning was objective, reasonable and logical.
3 . Software tools can be used john the ripper or Hydra , dictionary generator , pwdump7 the like .
4 . After the experiment, to retain electronic documents.
Three , experimental procedures
1 . ready
Experimental preparation well in advance, before the experiment should be detailed understanding of the purpose of the experiment, test requirements and test content , familiar and ready software tools with a good experiment , in accordance with the requirements and test content in advance to do the experiment content ready .
2 . lab environment
Describes the hardware and software environment used in the experiment (including a variety of software tools) ;
Office2003 boot and start the software or 2007 , browser, encryption and decryption software .
3 . experiment procedure
1 ) Start the system and start the tool software environment.
2 ) software tools to achieve experimental content.
4 . experimental report
Write lab reports in accordance with the standard requirements of the test report format. According to the template format to write the document embedded in the test report document, the document written in accordance with the provisions of the written format, the form must be said that the graphics have a table Illustrated.
Tool here (the school site visits)
http://121.194.212.168/eol/homepage/course/layout/page/index.jsp?courseId=14280
The left teaching materials, tools and sample in
Tasks ( a )
1. The following decryption string 35556C826BF3ADDFA2BB0F86E0819A6C . (Screenshot attached)
Plaintext is ppsuc
2.
This seems to be a lyric, please tell me the song decrypted.
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
Plain text:
When I am down and, oh my soul, so weary;
When troubles come and my heart burdened be;
Then, I am still and wait here in the silence,
Until you come and sit awhile with me.
You raise me up, so I can stand on mountains;
You raise me up, to walk on stormy seas;
I am strong, when I am on your shoulders;
You raise me up⦠To more than I can be.
You raise me up, so I can stand on mountains;
The song is you raise me up
Task (b)
windows system password cracking
1. Use the net user gao gao123 in windows xp system / add to add users gao, password gao123 account (user name and password can set their own); and use the net user command to add a user to determine success.
2. Use the software exports native pwdump
Encrypted string to add new accounts and password sam file
Administrator:500:NO PASSWORD*********************:31D6CFE0D16AE931B73C59D7E0C089C0:::
Guest:501:NO PASSWORD*********************:NO PASSWORD*********************:::
gao:1003:NO PASSWORD*********************:50852335CF958334E77FCDF5DFAC2229:::
3.使用saminside软件将sam.txt导入，并进行破解，注意配置字典破解和暴力破解
如果遇到复杂密码的LM值破解时间长，可以使用在线破解的方式。
http://www.objectif-securite.ch/ophcrack.php
任务（三）
内存密码提取
在系统中为Administrator用户设置一个高强度密码。
使用minikatz工具对系统的密码进行提取，涉及两条命令
需要注意的是，该命令生效的前提是用户已成功登陆。内存中有相应的密码。
任务（四）
远程服务密码破解
两个同学配合完成，A同学搭建FTP服务器，并新建用户，并设置登陆密码
使用实验室已经搭建好的ftp服务器
地址为:ftp://192.168.31.129/
2.使用hydra 对ftp用户的密码进行字典破解。hydra 中有关于该软件的使用命令语法。字典文件需要自己去生成。\
任务（五）
应用程序密码破解
使用Rar crack软件破解，给出的RAR target文件的密码，并查看压缩包中的内容
破解软件和RAR target均在前面给出的链接里。
任务（六）
完成对给定靶机的密码破解，并获取root权限。过程如下：
1.通过对网页的邮箱提取，形成用户表和密码表
2.通过nmap扫描发现其开放端口
3. 通过ssh协议破解获取登陆密码
4. 登陆后查看用户的权限和用户组
5. 提权获取shadow文件内容
6.通过对shadow文件破解获取root密码
相关工具：
john the ripper-windows版
https://pan.baidu.com/s/1mgp7SgvVYY2M_WWjCg-qqg
hydra - windows版
https://pan.baidu.com/s/1LQ1ituR5yGPhaTnT1FTTNg
参考：https://blog.csdn.net/pyphrb/article/details/52051321