├── .gitignore ├── LICENSE ├── README.md ├── client ├── client.cfg ├── client.py ├── gen_keys.py ├── install.sh ├── known_hosts ├── lib │ ├── cmd_help.py │ ├── color.py │ ├── connection.py │ ├── keyring.py │ └── shell_cli.py └── tests │ └── keyring_tests.py ├── img └── ratas_example.png └── server ├── gen_keys.py ├── install.sh ├── lib ├── connection.py ├── keyring.py └── shell_srv.py ├── server.cfg └── server.py /.gitignore: -------------------------------------------------------------------------------- 1 | .gitignore 2 | .idea 3 | *.pyc 4 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ![[Version 2.0](https://github.com/R3nt0n)](http://img.shields.io/badge/version-v2.0-orange.svg) 2 | ![[Python 2.7](https://github.com/R3nt0n)](http://img.shields.io/badge/python-2.7-blue.svg) 3 | ![[GPL-3.0 License](https://github.com/R3nt0n)](https://img.shields.io/badge/license-GPL%203.0-brightgreen.svg) 4 | ![[Date](https://github.com/R3nt0n)](http://img.shields.io/badge/date-2016-yellow.svg) 5 | 6 | 7 | 8 | # RATAS 9 | RATAS (**R**everse **A**ccess **T**ool **A**wesome and **S**ecure) is a remote shell with reverse connection and asymmetric encryption. 10 | It was **written in 2016** for **academic purposes**, presented as a final degree project of the Higher Degree in Information Systems Administration and Network. The idea was to create something that replicate, but in a way much more basic, the ssh functions. 11 | 12 | 13 |

14 | 15 | 16 | + **Asymmetric encryption** 17 | + **Reverse connection** 18 | + **Compatible with ssh** 19 | 20 | The app is divided in two parts: client and server. From the **client** you can **administer** the computer that has installed the **server**. 21 | 22 | You can use **any normal command** that you be able to introduce in the server shell, and **also special built-in commands** like READ, START, GETFILE, SENDFILE... 23 | 24 | The communication between two processes will be encrypted using **asymetric criptography** (using RSA-2048 public and private keys to establish the communication and AES-256 onwards). Also have the option to configure **known hosts** (compatible with the known hosts ssh protocol). 25 | 26 | It also include a built-in tool to **generate random private and public keys** (`gen_keys.py`). 27 | 28 | If you want, you can configure it to use **reverse connection** in the configuration files. 29 | 30 | 31 | ## Requirements 32 | + Python 2.7 33 | + requests 34 | + pycrypto 35 | 36 | 37 | ## Legal disclaimer 38 | This tool is created for the sole purpose of security awareness and education, it should not be used against systems that you do not have permission to test/attack. The author is not responsible for misuse or for any damage that you may cause. You agree that you use this software at your own risk. 39 | -------------------------------------------------------------------------------- /client/client.cfg: -------------------------------------------------------------------------------- 1 | # RATAS [ClientConfig] (https://www.github.com/R3nt0n/ratas) 2 | # R3nt0n (https://www.github.com/R3nt0n) 3 | ################################################################################ 4 | ## RATAS client - General configuration file ## 5 | ################################################################################ 6 | 7 | [GENERAL] 8 | # Dirección y puerto 9 | host= 10 | port=5555 11 | # Activación o no de conexión inversa 12 | reverse_conn=1 13 | 14 | 15 | [PKI] 16 | # Ficheros de claves del cliente 17 | prv_key=./prv.key 18 | pub_key=./pub.key 19 | # Fichero que almacenará la clave pública del servidor 20 | known_hosts=./known_hosts 21 | -------------------------------------------------------------------------------- /client/client.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [Client] (https://www.github.com/R3nt0n/ratas) 4 | # R3nt0n (https://www.github.com/R3nt0n) 5 | 6 | import os 7 | import sys 8 | import ConfigParser 9 | import argparse 10 | 11 | from lib.connection import Connection 12 | from lib.keyring import Keyring 13 | from lib.shell_cli import Shell 14 | from lib.color import color 15 | 16 | CFG_FILE = "./client.cfg" 17 | 18 | def read_conf(): 19 | cfg = ConfigParser.ConfigParser() 20 | cfg.read([CFG_FILE]) 21 | host = cfg.get('GENERAL', 'host') 22 | port = cfg.get('GENERAL', 'port') 23 | reverse = cfg.get('GENERAL', 'reverse_conn') 24 | pub_key = cfg.get('PKI', 'pub_key') 25 | prv_key = cfg.get('PKI', 'prv_key') 26 | known_hosts = cfg.get('PKI', 'known_hosts') 27 | return host, int(port), reverse, pub_key, prv_key, known_hosts 28 | 29 | def read_args(): 30 | parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter, 31 | description='Remote Shell Client.') 32 | parser.add_argument('-a', '--address', action='store', metavar='port', type=str, 33 | dest='addr', default=False, 34 | help='La dirección a utilizar en la conexión.') 35 | parser.add_argument('-p', '--port', action='store', metavar='port', type=int, 36 | dest='port', default=False, 37 | help='El puerto a utilizar en la conexión.') 38 | 39 | args = parser.parse_args() 40 | addr = args.addr 41 | port = args.port 42 | return addr, port 43 | 44 | 45 | def main(): 46 | HOST, PORT, REVERSE, PUB_KEY_FILE, PRV_KEY_FILE, KN_HOSTS_FILE = read_conf() 47 | 48 | # Si se pasa dirección y/o puerto como argumento, sobreescribirlo 49 | addr, port = read_args() 50 | if addr: HOST = addr 51 | if port: PORT = port 52 | 53 | # Si existe el known_hosts, leerlo y convertirlo en una lista 54 | if os.path.isfile(KN_HOSTS_FILE): 55 | with open(KN_HOSTS_FILE, "rb") as f: 56 | known_hosts = f.read() 57 | known_hosts = known_hosts.split("\n") 58 | else: 59 | known_hosts = False 60 | 61 | # Creación del socket 62 | conn = Connection(HOST, PORT) 63 | 64 | try: 65 | if REVERSE == '1': 66 | conn.listen(timeout=10) 67 | else: 68 | conn.connect() 69 | 70 | keyring = Keyring() 71 | 72 | # Lee los ficheros de claves pub/priv 73 | with open(PRV_KEY_FILE, 'rb') as f: 74 | prv_key = f.read() 75 | with open(PUB_KEY_FILE, 'rb') as f: 76 | pub_key = f.read() 77 | 78 | # Envía su clave pública al servidor 79 | conn.send(pub_key) 80 | 81 | # Recibe la clave pública del servidor 82 | srv_pub_key = conn.receive() 83 | if srv_pub_key == ':ERR:': 84 | print '{}[!]{} ERROR: El servidor no reconoce tu clave pública.'.format(color.RED,color.END) 85 | sys.exit(1) 86 | 87 | # Comparación de clave pública recibida con las contenidas en el known_hosts 88 | if (not known_hosts) or (srv_pub_key not in known_hosts): 89 | add_srv_to_known_hosts = raw_input("{}[!]{} WARNING: La clave pública de este servidor no se encuentra almacenada:\n{} \nSi lo desea, puede añadirla [y/n] >>> ".format(color.YELLOW, color.END, srv_pub_key)) 90 | if add_srv_to_known_hosts.lower() == "y": 91 | with open(KN_HOSTS_FILE, "ab") as f: 92 | f.write(srv_pub_key + "\n") 93 | 94 | # Envía firma de autenticación 95 | signature = keyring.sign(prv_key) 96 | conn.send(signature) 97 | 98 | srv_signature = conn.receive() 99 | # Si recibe error de autenticación, informa y cierra el programa 100 | if srv_signature == ':ERR:': 101 | print '{}[!]{} ERROR: La autenticación ha fallado'.format(color.RED,color.END) 102 | sys.exit(1) 103 | 104 | 105 | # Si logra autenticarse, comprueba la firma del servidor 106 | print '{}[+]{} Cliente autenticado correctamente'.format(color.GREEN, color.END) 107 | sign_valid = keyring.verify(srv_pub_key, srv_signature) 108 | if sign_valid: 109 | conn.send(':OK:') 110 | print '{}[+]{} Servidor autenticado correctamente'.format(color.GREEN, color.END) 111 | else: 112 | conn.send(':ERR:') 113 | print '{}[!]{} ERROR: La autenticación ha fallado'.format(color.RED, color.END) 114 | sys.exit(1) 115 | 116 | # Marca de sincronización 117 | sync = conn.receive() 118 | 119 | # Intercambio de clave de sesión mediante PKI 120 | session_key = keyring.genSessionKey() 121 | session_key_crypted = keyring.cipherRSA(session_key, srv_pub_key) 122 | conn.send(session_key_crypted) 123 | print '{}[+]{} Intercambiando clave de sesión...'.format(color.BLUE, color.END) 124 | # Una vez establecida e intercambiada la clave de sesión, asociamos el keyring a la conexión 125 | keyring.session_key = session_key 126 | conn.keyring = keyring 127 | 128 | shell = Shell(conn) 129 | shell.start() 130 | 131 | except conn.timeout: 132 | print '\n{}[!]{} El servidor está desconectado.\n'.format(color.RED,color.END) 133 | 134 | 135 | if __name__ == '__main__': 136 | main() 137 | -------------------------------------------------------------------------------- /client/gen_keys.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [GenKeys] (https://www.github.com/R3nt0n/ratas) 4 | # R3nt0n (https://www.github.com/R3nt0n) 5 | 6 | import argparse 7 | 8 | from lib.keyring import Keyring 9 | 10 | 11 | ############################################################################### 12 | # PROCESSING ARGS PASSED TO THE SCRIPT 13 | ############################################################################### 14 | parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter, 15 | description='Genera un par de claves RSA.') 16 | 17 | parser.add_argument('-p', '--prv', action='store', metavar='file', type=str, 18 | dest='prv', default='./prv.key', 19 | help='Ruta dónde exportar la clave privada.') 20 | 21 | parser.add_argument('-f', '--pub', action='store', metavar='file', type=str, 22 | dest='pub', default='./pub.key', 23 | help='Ruta dónde exportar la clave pública.') 24 | 25 | args = parser.parse_args() 26 | 27 | prvFile = args.prv 28 | pubFile = args.pub 29 | ############################################################################### 30 | 31 | k = Keyring() 32 | 33 | keys = k.genRSAKeys() 34 | prvKey = k.exportRSAKeys(keys, keyToExport='priv') 35 | pubKey = k.exportRSAKeys(keys, keyToExport='pub', formatKey='OpenSSH') 36 | 37 | with open(prvFile, 'wb') as f: 38 | f.write(prvKey) 39 | with open(pubFile, 'wb') as f: 40 | f.write(pubKey) 41 | -------------------------------------------------------------------------------- /client/install.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | apt update -y 4 | apt install -y python-pip 5 | 6 | pip install requests 7 | pip install pycryptodome -------------------------------------------------------------------------------- /client/known_hosts: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /client/lib/cmd_help.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [commandHelp] (https://www.github.com/R3nt0n/ratas) 4 | # R3nt0n (https://www.github.com/R3nt0n) 5 | 6 | 7 | ########################################################################## 8 | # MANUAL DE COMANDOS 9 | # Entra comando y devuelve la entrada del manual relacionada 10 | ########################################################################## 11 | def manual(command): 12 | 13 | if command == 'help': 14 | output = ''' 15 | *** COMANDOS ESPECIALES *** 16 | ------------------------------------------------------------------------- 17 | HELP: Muestra la lista de comandos especiales 18 | CLEAR: Limpiar pantalla 19 | PWD: Muestra el directorio en el que te encuentras 20 | FTP: Conectar a un servidor FTP 21 | GETFILE: Descargar un fichero del servidor en esta máquina 22 | SENDFILE: Enviar un fichero de esta máquina al servidor 23 | START: Ejecutar un archivo en el equipo servidor 24 | READ: Muestra el contenido de un fichero en la consola 25 | SHUTDOWN: Apagar el servidor 26 | REBOOT: Reiniciar el servidor 27 | EXIT: Salir de la consola de comandos 28 | -------------------------------------------------------------------------\n 29 | *Para más info sobre un comando especial (descripción, modificadores...): 30 | help [comando]\n''' 31 | 32 | ########################################################################## 33 | 34 | elif command.startswith('help ftp'): # AYUDA DE FTP 35 | output = ''' 36 | Este comando sirve para realizar una conexion a un servidor FTP.\n 37 | Tras ejecutar el comando, se pedira la IP del host, el usuario y la contraseña.\n 38 | La sintaxis es [ftp] ENTER [ip-host] ENTER [user] ENTER [password]\n''' 39 | 40 | ########################################################################## 41 | 42 | elif command.startswith('help start'): # AYUDA DE START 43 | output = ''' 44 | Este comando sirve para ejecutar un archivo en el equipo del servidor.\n 45 | La sintaxis es: [start] [nombre-del-archivo]\n 46 | Ejemplo: start client.py\n''' 47 | 48 | ########################################################################## 49 | 50 | elif command.startswith('help:&:read'): # AYUDA DE READ 51 | output = ''' 52 | Este comando sirve para mostrar por la consola el contenido de un fichero alojado en el equipo servidor.\n 53 | La sintaxis es: [read] [nombre-del-archivo]\n 54 | Ejemplo: read texto.txt\n''' 55 | 56 | ########################################################################## 57 | 58 | elif command.startswith('help:&:clear'): # AYUDA DE CLEAR 59 | output = ''' 60 | Este comando sirve para limpiar la pantalla.\n''' 61 | 62 | ########################################################################## 63 | 64 | elif command.startswith('help:&:getfile'): 65 | output = ''' 66 | Este comando sirve para descargar ficheros que estén alojados en el servidor. 67 | \nLa sintaxis es: getfile [rutaOrigen] [rutaDestino]\n 68 | - La ruta de origen hace referencia a la ruta donde se encuentra alojado el fichero en el servidor. 69 | - La ruta de destino hace referencia a la ruta donde se almacenará el fichero en 70 | la máquina cliente. 71 | - Las rutas pueden ser absolutas o relativas. 72 | \nEjemplo: getfile D:/Documents/fichero.exe D:/Downloads/ficheroDescargado.exe''' 73 | 74 | ########################################################################## 75 | 76 | elif command.startswith('help:&:sendfile'): 77 | output = ''' 78 | Este comando sirve para enviar ficheros que estén alojados en el cliente hacia 79 | la máquina del servidor.\n 80 | La sintaxis es: sendfile [rutaOrigen] [rutaDestino]\n 81 | - La ruta de origen hace referencia a la ruta donde se encuentra alojado el 82 | fichero en esta máquina. 83 | - La ruta de destino hace referencia a la ruta donde se almacenará el fichero en 84 | la máquina servidor. 85 | - Las rutas pueden ser absolutas o relativas.\n 86 | Ejemplo: getfile D:/Documents/fichero.exe D:/Downloads/ficheroDescargado.exe''' 87 | 88 | ########################################################################## 89 | 90 | elif command.startswith('help:&:shutdown'): # AYUDA DE SHUTDOWN 91 | output = ''' 92 | Este comando sirve para apagar el servidor de forma inmediata, forzando el cierre de aplicaciones. 93 | \nLa sintaxis es: [shutdown]\n''' 94 | 95 | ########################################################################## 96 | 97 | elif command.startswith('help:&:reboot'): # AYUDA DE REBOOT 98 | output = ''' 99 | Este comando sirve para reiniciar el servidor de forma inmediata, forzando el cierre de aplicaciones. 100 | \nLa sintaxis es: [reboot]\n''' 101 | 102 | ########################################################################## 103 | 104 | elif command.startswith('help:&:exit'): # AYUDA DE EXIT 105 | output = 'Este comando sirve para cerrar la consola.\n' 106 | 107 | else: 108 | output = 'No existe una entrada en el manual para ese comando.\n' 109 | 110 | ########################################################################## 111 | 112 | return output 113 | ########################################################################## 114 | 115 | 116 | ########################################################################## 117 | # MANUAL DE COMANDOS FTP 118 | # Entra command, devuelve output 119 | ########################################################################## 120 | def manualFTP(comftp): 121 | 122 | if comftp == 'help': 123 | output = ''' 124 | *** COMANDOS FTP *** 125 | --------------------------------------------------------------------- 126 | HELP: Muestra la lista de comandos que se pueden utilizar 127 | CLEAR: Limpiar pantalla 128 | PWD: Muestra la ruta del directorio actual 129 | CD: Cambia de directorio 130 | LS: Muestra el contenido del directorio actual 131 | MKDIR: Crear un directorio o árbol de directorios 132 | RMDIR: Eliminar un directorio 133 | UP: Subir un fichero al servidor FTP 134 | DOWN: Descargar un fichero del servidor FTP 135 | BYE: Cerrar la conexión FTP y regresar a la consola remota 136 | ---------------------------------------------------------------------\n 137 | **Para obtener ayuda sobre algún comando: help comando**\n 138 | **NOTA: Para ejecutar comandos locales, anteponer ! al comando. 139 | Ejemplo: !pwd\n\n''' 140 | 141 | elif comftp.startswith('shortHelp'): 142 | output = ''' 143 | Para conocer los comandos FTP disponibles escribe help. 144 | Para ejecutar comandos locales, anteponer ! al comando.''' 145 | 146 | elif comftp.startswith('help:&:clear'): # AYUDA DE CLEAR 147 | output = ''' 148 | Este comando sirve para limpiar la pantalla.\n''' 149 | 150 | ########################################################################## 151 | 152 | elif comftp.startswith('help pwd'): # AYUDA DE PWD 153 | output = ''' 154 | Este comando sirve para mostrar la ruta del directorio en el que te encuentras.\n''' 155 | 156 | ########################################################################## 157 | 158 | elif comftp.startswith('help !pwd'): # AYUDA DE LPWD 159 | output = ''' 160 | Este comando sirve para mostrar la ruta del directorio local en el que te encuentras.\n''' 161 | 162 | ########################################################################## 163 | 164 | elif comftp.startswith('help cd'): # AYUDA DE CD 165 | output = ''' 166 | Este comando sirve para cambiar de directorio.\n 167 | La sintaxis es: [cd] [ruta]\n 168 | Ejemplo: cd pages\n''' 169 | 170 | ########################################################################## 171 | 172 | elif comftp.startswith('help !cd'): # AYUDA DE LCD 173 | output = ''' 174 | Este comando sirve para cambiar el directorio local.\n 175 | La sintaxis es: [lcd] [ruta]\n 176 | Ejemplo: lcd pages\n''' 177 | 178 | ########################################################################## 179 | 180 | elif comftp.startswith('help ls'): # AYUDA DE LS 181 | output = ''' 182 | Este comando sirve para listar el contenido del directorio actual.''' 183 | 184 | ########################################################################## 185 | 186 | elif comftp.startswith('help !ls'): # AYUDA DE LLS 187 | output = ''' 188 | Este comando sirve para listar el contenido del directorio actual en el equipo local.''' 189 | 190 | ########################################################################## 191 | 192 | elif comftp.startswith('help:&:mkdir'): # AYUDA DE MKDIR 193 | output = ''' 194 | Este comando sirve para crear directorios.\n 195 | La sintaxis es: [mkdir] [ruta]\n 196 | Ejemplo: mkdir carpeta''' 197 | 198 | ########################################################################## 199 | 200 | elif comftp.startswith('help rmdir'): # AYUDA DE RMDIR 201 | output = ''' 202 | Este comando sirve para eliminar directorios.\n 203 | La sintaxis es: [rmdir] [ruta]\n 204 | Ejemplo: rmdir carpeta\n''' 205 | 206 | ########################################################################## 207 | 208 | elif comftp.startswith('help up'): # AYUDA DE UP 209 | output = ''' 210 | Este comando sirve para subir un fichero al host FTP desde el equipo servidor.\n 211 | La sintaxis es: [up] [ruta]\n 212 | Ejemplo: up imagen.png''' 213 | 214 | ########################################################################## 215 | 216 | elif comftp.startswith('help down'): # AYUDA DE DOWN 217 | output = ''' 218 | Este comando sirve para descargar un fichero desde el host FTP al equipo servidor.\n 219 | La sintaxis es: [down] [ruta]\n 220 | Ejemplo: down imagen.png''' 221 | 222 | ########################################################################## 223 | 224 | else: 225 | output = 'No existe una entrada en el manual para ese comando.\n' 226 | 227 | return output 228 | ########################################################################## 229 | -------------------------------------------------------------------------------- /client/lib/color.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [color_module] (https://www.github.com/R3nt0n/ratas) 4 | # R3nt0n (https://www.github.com/R3nt0n) 5 | 6 | class color: 7 | PURPLE = '\033[95m' 8 | CYAN = '\033[96m' 9 | DARKCYAN = '\033[36m' 10 | BLUE = '\033[94m' 11 | GREEN = '\033[92m' 12 | YELLOW = '\033[93m' 13 | RED = '\033[91m' 14 | BOLD = '\033[1m' 15 | UNDERLINE = '\033[4m' 16 | ORANGE = '\033[33m' 17 | END = '\033[0m' 18 | -------------------------------------------------------------------------------- /client/lib/connection.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [connection_module] (https://www.github.com/R3nt0n/ratas) 4 | # R3nt0n (https://www.github.com/R3nt0n) 5 | 6 | import socket 7 | from requests import get 8 | 9 | 10 | class Connection: 11 | def __init__(self, host, port): 12 | self.host = host 13 | self.port = port 14 | self.timeout = socket.timeout # Default timeout exception 15 | self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 16 | self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) 17 | self.conn = None 18 | self.keyring = None 19 | 20 | def getPrivateIP(self): 21 | tempSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) 22 | try: 23 | tempSocket.connect(('10.255.255.255', 0)) 24 | ip = tempSocket.getsockname()[0] 25 | except: 26 | ip = '127.0.0.1' 27 | finally: 28 | tempSocket.close() 29 | return ip 30 | 31 | def getPublicIP(self): 32 | try: 33 | ip = get('https://api.ipify.org', timeout=2).text 34 | except: 35 | ip = self.getPrivateIP() 36 | return ip 37 | 38 | def listen(self, timeout=None): 39 | self.sock.settimeout(timeout) 40 | self.sock.bind((self.host, self.port)) 41 | self.sock.listen(1) 42 | conn, addr = self.sock.accept() 43 | self.sock.settimeout(None) 44 | self.conn = conn 45 | 46 | def connect(self): 47 | self.sock.connect((self.host, self.port)) 48 | self.conn = self.sock 49 | 50 | def send(self, msg): 51 | if self.keyring and self.keyring.session_key: 52 | msg = self.keyring.cipherAES(msg) 53 | self.conn.send(msg + ':END:') 54 | 55 | def receive(self): 56 | output = '' 57 | while True: 58 | output += self.conn.recv(1024) 59 | if output.endswith(':END:'): 60 | break 61 | output = output[:-5] 62 | if self.keyring and self.keyring.session_key: 63 | output = self.keyring.decipherAES(output) 64 | return output 65 | 66 | def close(self): 67 | if self.conn: 68 | self.conn.close() 69 | 70 | 71 | if __name__ == '__main__': 72 | 73 | # ESPERAR UNA CONEXIÓN ETERNAMENTE 74 | server = Connection('', 5555) 75 | server.listen() 76 | 77 | # ESPERAR UNA CONEXIÓN DURANTE 4 SEGUNDOS 78 | server = Connection('', 5555) 79 | try: 80 | server.listen(4) 81 | except socket.timeout: 82 | print 'Nadie ha intentado conectarse' 83 | 84 | # CREAR UNA CONEXIÓN 85 | client = Connection('localhost', 5555) 86 | try: 87 | client.connect() 88 | except socket.error: 89 | print 'El servidor está desconectado' 90 | -------------------------------------------------------------------------------- /client/lib/keyring.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [keyring_module] (https://www.github.com/R3nt0n/ratas) 4 | # R3nt0n (https://www.github.com/R3nt0n) 5 | 6 | from base64 import b64encode, b64decode 7 | 8 | from Crypto.Cipher import AES 9 | from Crypto.PublicKey import RSA 10 | from Crypto.Cipher import PKCS1_OAEP 11 | from Crypto.Random import get_random_bytes # Para generar claves aleatorias 12 | from Crypto.Signature import pkcs1_15 13 | from Crypto.Hash import SHA256 14 | 15 | 16 | class Keyring: 17 | def __init__(self): 18 | self.sep = ':%:%:&:%:%:' 19 | self.session_key = False 20 | 21 | def genSessionKey(self): 22 | self.session_key = get_random_bytes(32) 23 | return self.session_key 24 | 25 | def cipherAES(self, data): 26 | cipherAES = AES.new(self.session_key, AES.MODE_EAX) 27 | cryptedData, tag = cipherAES.encrypt_and_digest(data) 28 | cryptedMsg = cipherAES.nonce + self.sep + tag + self.sep + cryptedData 29 | cryptedMsg = b64encode(cryptedMsg) 30 | return cryptedMsg 31 | 32 | def decipherAES(self, cryptedMsg): 33 | cryptedMsg = b64decode(cryptedMsg) 34 | cryptedMsg = cryptedMsg.split(self.sep) 35 | nonce = cryptedMsg[0] 36 | tag = cryptedMsg[1] 37 | cryptedData = cryptedMsg[2] 38 | decipherAES = AES.new(self.session_key, AES.MODE_EAX, nonce) 39 | decryptedData = decipherAES.decrypt_and_verify(cryptedData, tag) 40 | return decryptedData 41 | 42 | def genRSAKeys(self): 43 | keys = RSA.generate(2048) 44 | return keys 45 | 46 | def exportRSAKeys(self, keys, keyToExport='priv', formatKey='OpenSSH'): 47 | if keyToExport == 'priv': 48 | keyRSA = keys.exportKey() 49 | if keyToExport == 'pub': 50 | keyRSA = keys.publickey().exportKey(format=formatKey) 51 | return keyRSA 52 | 53 | def cipherRSA(self, data, pubKey): 54 | key = RSA.importKey(pubKey) 55 | cipherRSA = PKCS1_OAEP.new(key) 56 | cryptedData = cipherRSA.encrypt(data) 57 | cryptedData = b64encode(cryptedData) 58 | return cryptedData 59 | 60 | def decipherRSA(self, cryptedData, privKey): 61 | cryptedData = b64decode(cryptedData) 62 | key = RSA.importKey(privKey) 63 | decipherRSA = PKCS1_OAEP.new(key) 64 | decryptedData = decipherRSA.decrypt(cryptedData) 65 | return decryptedData 66 | 67 | def sign(self, privKey): 68 | msg = 'Hello world' 69 | privKey = RSA.import_key(privKey) 70 | msg_hash = SHA256.new(msg) 71 | signature = pkcs1_15.new(privKey).sign(msg_hash) 72 | return signature 73 | 74 | def verify(self, pubKey, signature): 75 | msg = 'Hello world' 76 | pubKey = RSA.import_key(pubKey) 77 | msg_hash = SHA256.new(msg) 78 | is_valid = True 79 | try: 80 | pkcs1_15.new(pubKey).verify(msg_hash, signature) 81 | except (ValueError, TypeError): 82 | is_valid = False 83 | return is_valid 84 | -------------------------------------------------------------------------------- /client/lib/shell_cli.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [shell_client_module] (https://www.github.com/R3nt0n/ratas) 4 | # R3nt0n (https://www.github.com/R3nt0n) 5 | 6 | import os 7 | from getpass import getpass 8 | 9 | from color import color 10 | from base64 import urlsafe_b64encode, urlsafe_b64decode 11 | from cmd_help import manual, manualFTP # Manual de los comandos 12 | 13 | 14 | class Shell: 15 | def __init__(self, conn): 16 | self.conn = conn 17 | self.shellFTP = False 18 | self.ipServer = None 19 | self.pwd = None 20 | 21 | # ACTUALIZAR EL PROMPT 22 | ############################################################################ 23 | def updatePrompt(self, output): 24 | if output.startswith(':FTP:'): 25 | self.shellFTP = True 26 | prompt = 'ftp > ' 27 | else: 28 | self.shellFTP = False 29 | prompt = '{}root@{}{}:{}{}{}# '.format(color.RED + color.BOLD, self.ipServer, color.END, color.BLUE + color.BOLD, self.pwd, color.END) 30 | return prompt 31 | 32 | # FORMATEO DE LA ENTRADA 33 | ############################################################################ 34 | def formatInput(self, command): 35 | command = command.strip(' ') 36 | command = command.replace('\ ', ':SP:') # Sustituir espacios escapados 37 | command = command.replace(' ', ':&:') # Separador de argumentos 38 | command = command.replace(':SP:', '\ ') # Sustituir espacios escapados 39 | return command 40 | 41 | # FORMATEO DE LA SALIDA 42 | ############################################################################ 43 | def formatOutput(self, output): 44 | if ':CWD:' in output: 45 | self.pwd = output.split(':CWD:')[-1:][0] 46 | output = output.split(':CWD:')[:-1][0] 47 | if output.startswith(':FTP:'): 48 | output = output[5:] 49 | if output.startswith(':ERR:'): 50 | output = '{}[!]{} ERROR: {}'.format(color.RED,color.END, output[5:]) 51 | return output 52 | 53 | # LIMPIAR LA PANTALLA 54 | ############################################################################ 55 | def clear(self): 56 | os.system(['clear', 'cls'][os.name == 'nt']) 57 | 58 | # COMPROBAR SI UNA VARIABLE ESTA VACIA 59 | ############################################################################ 60 | def isEmpty(self, variable): 61 | empty = False 62 | if len(str(variable)) == 0: 63 | empty = True 64 | return empty 65 | 66 | # RECEPCIÓN DE FICHEROS POR EL SOCKET 67 | ############################################################################ 68 | def getFile(self, destin): 69 | exists = self.conn.receive() 70 | if exists == ':NOEXISTS:': 71 | output = ':ERR:El fichero no existe' 72 | else: 73 | while True: 74 | self.conn.send(':SYNC:') 75 | bytesEncoded = self.conn.receive() 76 | 77 | if bytesEncoded == ':ENDFILE:': 78 | output = '{}[+]{} La descarga se ha completado'.format(color.GREEN, color.END) 79 | self.conn.receive() # Sincronización 80 | break 81 | else: 82 | try: 83 | bytesDecoded = urlsafe_b64decode(bytesEncoded) 84 | with open(destin, 'ab') as fileToSave: 85 | fileToSave.write(bytesDecoded) 86 | 87 | except: 88 | output = ':ERR:Ha habido un error en la transferencia' 89 | break 90 | return output 91 | 92 | # ENVÍO DE FICHEROS POR EL SOCKET 93 | ############################################################################ 94 | def sendFile(self, fileToSend): 95 | output = '' 96 | if os.path.exists(fileToSend): 97 | self.conn.send(':EXISTS:') 98 | with open(fileToSend, 'rb') as f: 99 | data = f.readlines() 100 | for line in data: 101 | lineEncoded = urlsafe_b64encode(line) # codifica el fichero 102 | imReady = self.conn.receive() 103 | if imReady == ':SYNC:': 104 | self.conn.send(lineEncoded) 105 | else: # recibe ERROR 106 | output = ':ERR:Ha habido un error en la transferencia' 107 | 108 | self.conn.send(':ENDFILE:') 109 | imReady = self.conn.receive() # Sincronización 110 | 111 | if imReady == ':SYNC:': 112 | output = '{}[+]{} La descarga se ha completado'.format(color.GREEN, color.END) 113 | 114 | else: 115 | self.conn.send(':NOEXISTS:') 116 | output = ':ERR:El fichero no existe' 117 | 118 | return output 119 | 120 | # EJECUCIÓN DE COMANDOS 121 | ############################################################################ 122 | def exeRemote(self, command): 123 | command = self.formatInput(command) 124 | output = '' 125 | 126 | ######################################################################## 127 | if command == 'exit': # Cierra la conexión 128 | self.conn.send(command) 129 | self.conn.close() 130 | output = ':CLOSE:' 131 | ######################################################################## 132 | elif command.startswith('help'): # Muestra la ayuda de un comando 133 | output = manual(command) 134 | ######################################################################## 135 | elif command.startswith('clear'): # Limpia la pantalla 136 | self.clear() 137 | ######################################################################## 138 | elif command.startswith('ftp'): # Conexion con servidor FTP 139 | 140 | if len(command.split(':&:')) != 2: 141 | output = ':ERR:No puedes dejar el campo del host en blanco' 142 | else: 143 | user = raw_input('\nIntroduce el nombre de usuario >>> ') 144 | password = getpass('\nIntroduce la contraseña >>> ') 145 | if not self.isEmpty(user): 146 | command += ':&:' + user + ':&:' + password 147 | self.conn.send(command) 148 | output = self.conn.receive() 149 | if output.startswith(':FTP:'): 150 | self.clear() 151 | output = output + '\n' + manualFTP('shortHelp') 152 | ######################################################################## 153 | elif command.startswith('getfile'): 154 | inputData = command.split(':&:') 155 | if len(inputData) != 3: 156 | output = ':ERR:Número de argumentos incorrecto.\n' + \ 157 | 'Escribe help getfile para conocer la sintaxis.\n' 158 | else: 159 | command = inputData[0] 160 | fileToGet = inputData[1] 161 | destin = inputData[2] 162 | self.conn.send(command + ':&:' + fileToGet) 163 | output = self.getFile(destin) 164 | ######################################################################## 165 | elif command.startswith('sendfile'): 166 | inputData = command.split(':&:') 167 | if len(inputData) != 3: 168 | output = ':ERR:Número de argumentos incorrecto.\n' + \ 169 | 'Escribe help sendfile para conocer la sintaxis.\n' 170 | else: 171 | command = inputData[0] 172 | fileToSend = inputData[1] 173 | destin = inputData[2] 174 | self.conn.send(command + ':&:' + destin) 175 | output = self.sendFile(fileToSend) 176 | ######################################################################## 177 | elif self.isEmpty(command): 178 | output = ':ERR: No has introducido ningun comando' 179 | ######################################################################## 180 | else: 181 | self.conn.send(command) 182 | output = self.conn.receive() 183 | ######################################################################## 184 | return output 185 | 186 | # EJECUCIÓN DE COMANDOS FTP 187 | ############################################################################ 188 | def exeRemoteFTP(self, comftp): 189 | outputFTP = ":FTP:" 190 | if comftp.startswith('help'): 191 | outputFTP += manualFTP(comftp) 192 | elif comftp.startswith('clear'): # Limpiar la pantalla 193 | self.clear() 194 | elif self.isEmpty(comftp): 195 | outputFTP += ':ERR:No has introducido ningun comando' 196 | else: # Enviar comando FTP 197 | self.conn.send(':FTP:' + comftp) 198 | outputFTP = self.conn.receive() 199 | return outputFTP 200 | 201 | # ARRANCAR LA SHELL 202 | ############################################################################ 203 | def start(self): 204 | initial_info = (self.conn.receive()).split(':CWD:') 205 | self.ipServer = initial_info[0] 206 | self.pwd = initial_info[1] 207 | self.clear() 208 | print manual('help') 209 | output = '' 210 | 211 | while True: 212 | try: 213 | prompt = self.updatePrompt(output) 214 | command = raw_input(prompt) 215 | 216 | if self.shellFTP: 217 | output = self.exeRemoteFTP(command) 218 | else: 219 | output = self.exeRemote(command) 220 | 221 | if output == ':CLOSE:': 222 | break 223 | else: 224 | print self.formatOutput(output) 225 | 226 | except: 227 | self.conn.send('exit') 228 | self.conn.close() 229 | break 230 | 231 | 232 | # Ejemplo de uso: 233 | if __name__ == '__main__': 234 | from connection import Connection 235 | conn = Connection('localhost', 5555) 236 | conn.listen() 237 | shell = Shell(conn) 238 | shell.start() 239 | -------------------------------------------------------------------------------- /client/tests/keyring_tests.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [KeyringTests] (https://www.github.com/R3nt0n/ratas) 4 | # R3nt0n (https://www.github.com/R3nt0n) 5 | 6 | 7 | import unittest 8 | 9 | import sys 10 | from os import path 11 | sys.path.append(path.dirname(path.dirname(path.abspath(__file__)))) 12 | from lib.keyring import Keyring 13 | 14 | 15 | class TestAES(unittest.TestCase): 16 | def setUp(self): 17 | self.keyring = Keyring() 18 | self.sessionKey = self.keyring.genSessionKey() 19 | 20 | def tearDown(self): 21 | del self.keyring, self.sessionKey 22 | 23 | def testEncryptDecrypt(self): 24 | data = 'Hello world!' 25 | cryptedData = self.keyring.cipherAES(data, self.sessionKey) 26 | decryptedData = self.keyring.decipherAES(cryptedData, self.sessionKey) 27 | self.assertEqual(data, decryptedData) 28 | 29 | 30 | class TestRSA(unittest.TestCase): 31 | def setUp(self): 32 | self.keyring = Keyring() 33 | self.keys = self.keyring.genRSAKeys() 34 | self.prvKey = self.keyring.exportRSAKeys(self.keys) 35 | self.pubKey = self.keyring.exportRSAKeys(self.keys, keyToExport='pub') 36 | 37 | def tearDown(self): 38 | del self.keyring, self.keys, self.prvKey, self.pubKey 39 | 40 | def testEncryptDecrypt(self): 41 | data = 'Hello world!' 42 | cryptedData = self.keyring.cipherRSA(data, self.pubKey) 43 | decryptedData = self.keyring.decipherRSA(cryptedData, self.prvKey) 44 | self.assertEqual(data, decryptedData) 45 | 46 | 47 | if __name__ == '__main__': 48 | unittest.main() 49 | -------------------------------------------------------------------------------- /img/ratas_example.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/r3nt0n/RATAS/998c4faa03c30a71677549276e72ba0bfbd86d29/img/ratas_example.png -------------------------------------------------------------------------------- /server/gen_keys.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [gen_keys] 4 | 5 | import argparse 6 | 7 | from lib.keyring import Keyring 8 | 9 | 10 | ############################################################################### 11 | # PROCESSING ARGS PASSED TO THE SCRIPT 12 | ############################################################################### 13 | parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter, 14 | description='Genera un par de claves RSA.') 15 | 16 | parser.add_argument('-p', '--prv', action='store', metavar='file', type=str, 17 | dest='prv', default='./prv.key', 18 | help='Ruta dónde exportar la clave privada.') 19 | 20 | parser.add_argument('-f', '--pub', action='store', metavar='file', type=str, 21 | dest='pub', default='./pub.key', 22 | help='Ruta dónde exportar la clave pública.') 23 | 24 | args = parser.parse_args() 25 | 26 | prvFile = args.prv 27 | pubFile = args.pub 28 | ############################################################################### 29 | 30 | k = Keyring() 31 | 32 | keys = k.genRSAKeys() 33 | prvKey = k.exportRSAKeys(keys, keyToExport='priv') 34 | pubKey = k.exportRSAKeys(keys, keyToExport='pub', formatKey='OpenSSH') 35 | 36 | with open(prvFile, 'wb') as f: 37 | f.write(prvKey) 38 | with open(pubFile, 'wb') as f: 39 | f.write(pubKey) -------------------------------------------------------------------------------- /server/install.sh: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | apt update -y 4 | apt install -y python-pip 5 | 6 | pip install requests 7 | pip install pycryptodome -------------------------------------------------------------------------------- /server/lib/connection.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [connection_module] 4 | 5 | import socket 6 | from requests import get 7 | 8 | 9 | class Connection: 10 | def __init__(self, host, port): 11 | self.host = host 12 | self.port = port 13 | self.timeout = socket.timeout # Default timeout exception 14 | self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 15 | self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) 16 | self.conn = None 17 | self.keyring = None 18 | 19 | def getPrivateIP(self): 20 | tempSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) 21 | try: 22 | tempSocket.connect(('10.255.255.255', 0)) 23 | ip = tempSocket.getsockname()[0] 24 | except: 25 | ip = '127.0.0.1' 26 | finally: 27 | tempSocket.close() 28 | return ip 29 | 30 | def getPublicIP(self): 31 | try: 32 | ip = get('https://api.ipify.org', timeout=2).text 33 | except: 34 | ip = self.getPrivateIP() 35 | return ip 36 | 37 | def listen(self, timeout=None): 38 | self.sock.settimeout(timeout) 39 | self.sock.bind((self.host, self.port)) 40 | self.sock.listen(1) 41 | conn, addr = self.sock.accept() 42 | self.sock.settimeout(None) 43 | self.conn = conn 44 | 45 | def connect(self): 46 | self.sock.connect((self.host, self.port)) 47 | self.conn = self.sock 48 | 49 | def send(self, msg): 50 | if self.keyring and self.keyring.session_key: 51 | msg = self.keyring.cipherAES(msg) 52 | self.conn.send(msg + ':END:') 53 | 54 | def receive(self): 55 | output = '' 56 | while True: 57 | output += self.conn.recv(1024) 58 | if output.endswith(':END:'): 59 | break 60 | output = output[:-5] 61 | if self.keyring and self.keyring.session_key: 62 | output = self.keyring.decipherAES(output) 63 | return output 64 | 65 | def close(self): 66 | if self.conn: 67 | self.conn.close() 68 | 69 | 70 | if __name__ == '__main__': 71 | 72 | # ESPERAR UNA CONEXIÓN ETERNAMENTE 73 | server = Connection('', 5555) 74 | server.listen() 75 | 76 | # ESPERAR UNA CONEXIÓN DURANTE 4 SEGUNDOS 77 | server = Connection('', 5555) 78 | try: 79 | server.listen(4) 80 | except socket.timeout: 81 | print 'Nadie ha intentado conectarse' 82 | 83 | # CREAR UNA CONEXIÓN 84 | client = Connection('localhost', 5555) 85 | try: 86 | client.connect() 87 | except socket.error: 88 | print 'El servidor está desconectado' 89 | -------------------------------------------------------------------------------- /server/lib/keyring.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [keyring_module] 4 | 5 | from base64 import b64encode, b64decode 6 | 7 | from Crypto.Cipher import AES 8 | from Crypto.PublicKey import RSA 9 | from Crypto.Cipher import PKCS1_OAEP 10 | from Crypto.Random import get_random_bytes # Para generar claves aleatorias 11 | from Crypto.Signature import pkcs1_15 12 | from Crypto.Hash import SHA256 13 | 14 | 15 | class Keyring: 16 | def __init__(self): 17 | self.sep = ':%:%:&:%:%:' 18 | self.session_key = False 19 | 20 | def genSessionKey(self): 21 | self.session_key = get_random_bytes(32) 22 | return self.session_key 23 | 24 | def cipherAES(self, data): 25 | cipherAES = AES.new(self.session_key, AES.MODE_EAX) 26 | cryptedData, tag = cipherAES.encrypt_and_digest(data) 27 | cryptedMsg = cipherAES.nonce + self.sep + tag + self.sep + cryptedData 28 | cryptedMsg = b64encode(cryptedMsg) 29 | return cryptedMsg 30 | 31 | def decipherAES(self, cryptedMsg): 32 | cryptedMsg = b64decode(cryptedMsg) 33 | cryptedMsg = cryptedMsg.split(self.sep) 34 | nonce = cryptedMsg[0] 35 | tag = cryptedMsg[1] 36 | cryptedData = cryptedMsg[2] 37 | decipherAES = AES.new(self.session_key, AES.MODE_EAX, nonce) 38 | decryptedData = decipherAES.decrypt_and_verify(cryptedData, tag) 39 | return decryptedData 40 | 41 | def genRSAKeys(self): 42 | keys = RSA.generate(2048) 43 | return keys 44 | 45 | def exportRSAKeys(self, keys, keyToExport='priv', formatKey='OpenSSH'): 46 | if keyToExport == 'priv': 47 | keyRSA = keys.exportKey() 48 | if keyToExport == 'pub': 49 | keyRSA = keys.publickey().exportKey(format=formatKey) 50 | return keyRSA 51 | 52 | def cipherRSA(self, data, pubKey): 53 | key = RSA.importKey(pubKey) 54 | cipherRSA = PKCS1_OAEP.new(key) 55 | cryptedData = cipherRSA.encrypt(data) 56 | cryptedData = b64encode(cryptedData) 57 | return cryptedData 58 | 59 | def decipherRSA(self, cryptedData, privKey): 60 | cryptedData = b64decode(cryptedData) 61 | key = RSA.importKey(privKey) 62 | decipherRSA = PKCS1_OAEP.new(key) 63 | decryptedData = decipherRSA.decrypt(cryptedData) 64 | return decryptedData 65 | 66 | def sign(self, privKey): 67 | msg = 'Hello world' 68 | privKey = RSA.import_key(privKey) 69 | msg_hash = SHA256.new(msg) 70 | signature = pkcs1_15.new(privKey).sign(msg_hash) 71 | return signature 72 | 73 | def verify(self, pubKey, signature): 74 | msg = 'Hello world' 75 | pubKey = RSA.import_key(pubKey) 76 | msg_hash = SHA256.new(msg) 77 | is_valid = True 78 | try: 79 | pkcs1_15.new(pubKey).verify(msg_hash, signature) 80 | except (ValueError, TypeError): 81 | is_valid = False 82 | return is_valid 83 | -------------------------------------------------------------------------------- /server/lib/shell_srv.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [shell_server_module] 4 | 5 | import os 6 | import subprocess 7 | import ftplib 8 | import time 9 | import socket 10 | from urllib import urlretrieve 11 | from datetime import datetime 12 | from base64 import urlsafe_b64encode, urlsafe_b64decode 13 | 14 | class Shell: 15 | def __init__(self, conn): 16 | self.conn = conn 17 | 18 | # COMPROBAR SI UNA VARIABLE ESTA VACIA 19 | ############################################################################ 20 | def isEmpty(self, variable): 21 | empty = False 22 | if len(str(variable)) == 0: 23 | empty = True 24 | return empty 25 | 26 | # CAMBIO DE DIRECTORIO LOCAL 27 | ############################################################################ 28 | def cd(self, newPath): 29 | try: 30 | newPath = os.path.expanduser(newPath) 31 | os.chdir(newPath) 32 | output = os.getcwd() 33 | except: 34 | output = ':ERR:La ruta no existe o no es posible acceder a ella' 35 | return output 36 | 37 | # RECEPCIÓN DE FICHEROS POR EL SOCKET 38 | ############################################################################ 39 | def getFile(self, destin): 40 | exists = self.conn.receive() 41 | if exists != ':NOEXISTS:': 42 | while True: 43 | self.conn.send(':SYNC:') 44 | bytesEncoded = self.conn.receive() 45 | if bytesEncoded == ':ENDFILE:': 46 | self.conn.receive() # Sincronización 47 | break 48 | 49 | else: 50 | try: 51 | bytesDecoded = urlsafe_b64decode(bytesEncoded) 52 | with open(destin, 'ab') as fileToSave: 53 | fileToSave.write(bytesDecoded) 54 | 55 | except: 56 | self.conn.send(':ERR:Ha habido un error en la transferencia') 57 | break 58 | 59 | # ENVIO DE FICHEROS POR EL SOCKET 60 | ############################################################################ 61 | def sendFile(self, fileToSend): 62 | if os.path.exists(fileToSend): 63 | self.conn.send(':EXISTS:') 64 | with open(fileToSend, 'rb') as f: 65 | data = f.readlines() 66 | for line in data: 67 | lineEncoded = urlsafe_b64encode(line) 68 | imReady = self.conn.receive() 69 | if imReady == ':SYNC:': 70 | self.conn.send(lineEncoded) 71 | 72 | self.conn.receive() # Sincronización 73 | self.conn.send(':ENDFILE:') 74 | 75 | else: 76 | self.conn.send(':NOEXISTS:') 77 | 78 | # EJECUCIÓN DE COMANDOS 79 | ############################################################################ 80 | def executeLocal(self, command): 81 | 82 | output = '' 83 | if command.startswith('pwd'): # Enviar directorio actual 84 | output = os.getcwd() 85 | ######################################################################## 86 | elif command.startswith('cd'): # Cambiar de directorio 87 | command = command.split(':&:') 88 | newPath = command[1] 89 | if self.isEmpty(newPath): 90 | output = os.getcwd() 91 | else: 92 | output = self.cd(newPath) 93 | ######################################################################## 94 | elif command.startswith('start'): # Ejecutar un archivo 95 | targetFile = command[1] 96 | try: 97 | if os.name == 'nt': 98 | os.startfile(targetFile) 99 | elif os.name == 'posix': 100 | subprocess.call(('xdg-open', targetFile)) 101 | output = 'El fichero ha sido ejecutado.' 102 | except: 103 | output = (':ERR:Ha ocurrido un problema al intentar ejecutar el fichero...') 104 | ######################################################################## 105 | elif command.startswith('getfile'): # Envío de ficheros por socket 106 | inputData = command.split(':&:') 107 | fileToSend = inputData[1] 108 | self.sendFile(fileToSend) 109 | output = '' 110 | ######################################################################## 111 | elif command.startswith('sendfile'): # Recepción de ficheros por socket 112 | inputData = command.split(':&:') 113 | destin = inputData[1] 114 | self.getFile(destin) 115 | output = '' 116 | ######################################################################## 117 | elif command.startswith('ftp'): # Conectar a un FTP 118 | ftpLogin = command.split(':&:') 119 | host = ftpLogin[1] 120 | if len(ftpLogin) > 2: 121 | user = ftpLogin[2] 122 | password = ftpLogin[3] 123 | else: 124 | user = 'anonymous' 125 | password = 'anonymous@' 126 | try: 127 | global ftp 128 | ftp = ftplib.FTP(host, user, password) 129 | ftp.voidcmd('PWD') # Comando de prueba para comprobar permisos 130 | output = ":FTP:" + ftp.getwelcome() 131 | except socket.gaierror: 132 | output = ":ERR:Host incorrecto" 133 | except ftplib.error_perm: 134 | output = ":ERR:Autenticación fallida" 135 | ######################################################################## 136 | elif command.startswith('read'): # Leer un fichero de texto plano 137 | targetFile = command[5:] 138 | if os.path.isfile(targetFile): 139 | output = '' 140 | with open(targetFile) as f: 141 | for line in f: 142 | output += line 143 | else: 144 | output = '\nEl fichero ' + targetFile + ' no existe.' 145 | ######################################################################## 146 | elif command == 'shutdown': # Apagar el servidor 147 | try: 148 | if os.name == 'nt': 149 | self.conn.send('El servidor se esta apagando...') 150 | os.system('shutdown -s -f -t 0') 151 | elif os.name == 'posix': 152 | self.conn.send('El servidor se esta apagando...') 153 | os.system('shutdown -h now') 154 | except: 155 | output = ':ERR:Ha ocurrido un error.' 156 | ######################################################################## 157 | elif command == 'reboot': # Reiniciar el servidor 158 | try: 159 | if os.name == 'nt': 160 | self.conn.send('El servidor se está reiniciando...') 161 | os.system('shutdown -r -f -t 0') 162 | elif os.name == 'posix': 163 | self.conn.send('El servidor se está reiniciando...') 164 | os.system('shutdown -r now') 165 | except: 166 | output = ':ERR:Ha ocurrido un error.' 167 | ######################################################################## 168 | elif command == 'exit': # Salir de la consola 169 | self.conn.close() 170 | output = ":CLOSE:" 171 | ######################################################################## 172 | elif command == '': 173 | output = ':ERR:No has introducido ningun comando' 174 | ######################################################################## 175 | else: # Comandos propios de la shell del sistema 176 | command = command.replace(':&:', ' ') 177 | try: 178 | process = subprocess.Popen(command, 179 | shell=True, 180 | stdout=subprocess.PIPE, 181 | stderr=subprocess.PIPE, 182 | stdin=subprocess.PIPE) 183 | error = process.stderr.read() 184 | process.stderr.close() 185 | if error: 186 | output = error 187 | else: 188 | output = '' 189 | for line in process.stdout: 190 | output += line 191 | process.stdout.close() 192 | if self.isEmpty(output): 193 | output = ' ' 194 | except OSError: 195 | output = ':ERR:Command not found' 196 | ######################################################################## 197 | return output 198 | 199 | # CONSOLA FTP 200 | ############################################################################ 201 | def executeFTP(self, comftp, ftp): 202 | 203 | commandFtp = comftp.replace(":FTP:", '') 204 | output = ':FTP:' 205 | ######################################################################## 206 | if commandFtp.startswith('pwd'): # Mostrar directorio actual del FTP 207 | try: 208 | output += ftp.pwd() 209 | except: 210 | output += ':ERR:Ha ocurrido un error' 211 | ######################################################################## 212 | elif commandFtp.startswith('cd'): # Cambiar de directorio 213 | ruta = commandFtp[3:] 214 | try: 215 | ftp.cwd(ruta) 216 | output += ftp.pwd() 217 | except: 218 | output += ':ERR:Ha ocurrido un error' 219 | ######################################################################## 220 | elif commandFtp.startswith('ls'): # Mostrar contenido del directorio 221 | try: 222 | fileList = [] 223 | ftp.dir(fileList.append) 224 | for i in fileList: 225 | output += ('\n' + i) 226 | except: 227 | output += ':ERR:Ha ocurrido un error' 228 | ######################################################################## 229 | elif commandFtp.startswith('mkdir'): # Crear directorio 230 | folder = commandFtp[6:] 231 | try: 232 | ftp.mkd(folder) 233 | output += '[*] El directorio ha sido creado con exito' 234 | except: 235 | output += ':ERR:No ha sido posible crear el directorio' 236 | ######################################################################## 237 | elif commandFtp.startswith('rmdir'): # Borrar directorio 238 | folder = commandFtp[6:] 239 | try: 240 | ftp.rmd(folder) 241 | output += '[*] El directorio ha sido eliminado con exito' 242 | except: 243 | output += ':ERR:No ha sido posible eliminar el directorio' 244 | ######################################################################## 245 | elif commandFtp.startswith('up'): # Subir a un FTP 246 | targetFile = commandFtp[3:] 247 | try: 248 | f = open(targetFile, 'rb') 249 | ftp.storbinary('STOR ' + targetFile, f) 250 | f.close() 251 | output += '[*] El fichero se ha subido con exito' 252 | except ftplib.error_perm: 253 | output += ':ERR:no tienes permiso para subir ficheros' 254 | except: 255 | output += ':ERR:No ha sido posible subir el fichero' 256 | ######################################################################## 257 | elif commandFtp.startswith('down'): # Descargar de un servidor FTP 258 | targetFile = commandFtp[5:] 259 | try: 260 | f = open(targetFile, 'wb') 261 | ftp.retrbinary('RETR ' + targetFile, f.write) 262 | f.close() 263 | output += '[*] El archivo se ha descargado con exito' 264 | except: 265 | output += ':ERR:No ha sido posible descargar el archivo' 266 | ######################################################################## 267 | elif commandFtp.startswith('!cd'): # Cambio de directorio local 268 | newPath = commandFtp[4:] 269 | if self.isEmpty(newPath): 270 | output += os.getcwd() 271 | else: 272 | output += self.cd(newPath) 273 | ######################################################################## 274 | elif commandFtp in ['exit', 'bye', 'quit']: 275 | output = 'Se ha cerrado la conexion FTP' 276 | ftp.quit() 277 | ######################################################################## 278 | elif commandFtp == '': 279 | output += ':ERR:No has introducido ningun comando' 280 | ######################################################################## 281 | elif commandFtp.startswith('!'): 282 | commandFtp = commandFtp.replace('!', '') 283 | commandFtp = commandFtp.replace(' ', ':&:') 284 | output += self.executeLocal(commandFtp) 285 | ######################################################################## 286 | else: 287 | try: 288 | output += ftp.sendcmd(commandFtp) 289 | except ftplib.error_perm: 290 | output += ':ERR:El comando no existe o no tienes permiso.' 291 | ######################################################################## 292 | return output 293 | 294 | # ARRANCAR LA SHELL 295 | ############################################################################ 296 | def start(self): 297 | cwd = ':CWD:' + os.getcwd() 298 | try: 299 | self.conn.send(self.conn.getPublicIP() + cwd) 300 | except: 301 | self.conn.send(self.conn.getPrivateIP() + cwd) 302 | 303 | while True: 304 | output = '' 305 | command = self.conn.receive() # Recibe el comando a ejecutar 306 | if command.startswith(":FTP:"): 307 | output = self.executeFTP(command, ftp) 308 | else: 309 | output = self.executeLocal(command) 310 | 311 | if output == ":CLOSE:": 312 | break 313 | 314 | output += ':CWD:' + os.getcwd() # Añade siempre al final el directorio actual 315 | self.conn.send(output) # Envía la salida 316 | -------------------------------------------------------------------------------- /server/server.cfg: -------------------------------------------------------------------------------- 1 | ################################################################################ 2 | ## RATAS server - General configuration file ## 3 | ################################################################################ 4 | 5 | [GENERAL] 6 | # Dirección y puerto en el que está escuchando el servidor 7 | host=localhost 8 | port=5555 9 | # Activación o no de conexión inversa 10 | reverse_conn=1 11 | 12 | 13 | [PKI] 14 | # Ficheros de claves del servidor 15 | prv_key=./prv.key 16 | pub_key=./pub.key 17 | # Fichero que almacenará la clave pública del cliente autorizado a conectarse 18 | known_hosts=./known_hosts 19 | -------------------------------------------------------------------------------- /server/server.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | # RATAS [Server] 4 | 5 | import os 6 | import sys 7 | import time 8 | import ConfigParser 9 | 10 | from lib.connection import Connection 11 | from lib.shell_srv import Shell 12 | from lib.keyring import Keyring 13 | 14 | CFG_FILE = "./server.cfg" 15 | 16 | def read_conf(): 17 | cfg = ConfigParser.ConfigParser() 18 | cfg.read([CFG_FILE]) 19 | host = cfg.get('GENERAL', 'host') 20 | port = cfg.get('GENERAL', 'port') 21 | reverse = cfg.get('GENERAL', 'reverse_conn') 22 | pub_key = cfg.get('PKI', 'pub_key') 23 | prv_key = cfg.get('PKI', 'prv_key') 24 | known_hosts = cfg.get('PKI', 'known_hosts') 25 | 26 | return host, int(port), reverse, pub_key, prv_key, known_hosts 27 | 28 | 29 | def main(): 30 | initial_path = os.path.dirname(os.path.abspath(__file__)) 31 | 32 | HOST, PORT, REVERSE, PUB_KEY_FILE, PRV_KEY_FILE, KN_HOSTS_FILE = read_conf() 33 | 34 | # Comprobar que exista un fichero con la clave pública del cliente 35 | if os.path.isfile(KN_HOSTS_FILE): 36 | with open(KN_HOSTS_FILE, "rb") as f: 37 | known_hosts = f.read() 38 | known_hosts = known_hosts.split("\n") 39 | else: 40 | print '[!] ERROR: El fichero {} debe existir.'.format(KN_HOSTS_FILE) 41 | sys.exit(1) 42 | 43 | while True: 44 | time.sleep(1) 45 | 46 | # Creación del socket 47 | conn = Connection(HOST, PORT) 48 | 49 | try: 50 | if REVERSE == '1': 51 | conn.connect() 52 | else: 53 | conn.listen(timeout=5) 54 | 55 | keyring = Keyring() 56 | 57 | # Lee los ficheros de claves pub/priv 58 | with open(PRV_KEY_FILE, 'rb') as f: 59 | prv_key = f.read() 60 | with open(PUB_KEY_FILE, 'rb') as f: 61 | pub_key = f.read() 62 | 63 | # Recibe la clave pública del cliente 64 | cli_pub_key = conn.receive() 65 | 66 | # Si no reconoce la clave pub del cliente, informa de que se cierra la conexión 67 | if cli_pub_key not in known_hosts: 68 | conn.send(':ERR:') 69 | sys.exit(1) 70 | # Si reconoce la clave pub del cliente, le envía su clave pública 71 | conn.send(pub_key) 72 | 73 | # Recibe firma de autenticación del cliente y la comprueba 74 | cli_signature = conn.receive() 75 | sign_valid = keyring.verify(cli_pub_key, cli_signature) 76 | # Si es válida, envía su firma de autenticación 77 | if sign_valid: 78 | signature = keyring.sign(prv_key) 79 | conn.send(signature) 80 | else: 81 | conn.send(':ERR:') 82 | sys.exit(1) 83 | 84 | # Si el cliente no acepta la firma, cierra el programa 85 | auth = conn.receive() 86 | if auth == ':ERR:': 87 | sys.exit(1) 88 | 89 | # Marca de sincronización 90 | conn.send(':SYNC:') 91 | # Intercambio de clave de sesión mediante PKI 92 | session_key_crypted = conn.receive() 93 | session_key = keyring.decipherRSA(session_key_crypted, prv_key) 94 | 95 | # Una vez establecida e intercambiada la clave de sesión, asociamos el keyring a la conexión 96 | keyring.session_key = session_key 97 | conn.keyring = keyring 98 | 99 | shell = Shell(conn) 100 | shell.start() 101 | os.chdir(initial_path) # Por si el cliente se cambió de directorio 102 | 103 | except: 104 | pass 105 | 106 | 107 | if __name__ == '__main__': 108 | main() --------------------------------------------------------------------------------